CN107738461B - A kind of method that regenerated membrane plastics prepare agricultural mulching - Google Patents
A kind of method that regenerated membrane plastics prepare agricultural mulching Download PDFInfo
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- CN107738461B CN107738461B CN201710998778.XA CN201710998778A CN107738461B CN 107738461 B CN107738461 B CN 107738461B CN 201710998778 A CN201710998778 A CN 201710998778A CN 107738461 B CN107738461 B CN 107738461B
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- 239000004033 plastic Substances 0.000 title claims abstract description 58
- 229920003023 plastic Polymers 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000012528 membrane Substances 0.000 title claims abstract description 20
- 239000000835 fiber Substances 0.000 claims abstract description 44
- 238000007731 hot pressing Methods 0.000 claims abstract description 34
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000002985 plastic film Substances 0.000 claims abstract description 25
- 229920006255 plastic film Polymers 0.000 claims abstract description 25
- 239000002699 waste material Substances 0.000 claims abstract description 25
- 239000010902 straw Substances 0.000 claims abstract description 22
- 238000002360 preparation method Methods 0.000 claims abstract description 17
- 230000008929 regeneration Effects 0.000 claims description 23
- 238000011069 regeneration method Methods 0.000 claims description 23
- 239000011812 mixed powder Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 13
- 238000003801 milling Methods 0.000 claims description 13
- 238000004806 packaging method and process Methods 0.000 claims description 9
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- 235000019353 potassium silicate Nutrition 0.000 claims description 8
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 11
- 239000002689 soil Substances 0.000 abstract description 11
- 239000000843 powder Substances 0.000 abstract description 9
- 238000004140 cleaning Methods 0.000 abstract description 7
- 239000012535 impurity Substances 0.000 abstract description 7
- 239000000203 mixture Substances 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000012943 hotmelt Substances 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 3
- 238000011065 in-situ storage Methods 0.000 abstract description 3
- 238000012856 packing Methods 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 42
- 238000004064 recycling Methods 0.000 description 17
- 239000002362 mulch Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 238000002834 transmittance Methods 0.000 description 8
- 230000004048 modification Effects 0.000 description 7
- 238000012986 modification Methods 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000002708 enhancing effect Effects 0.000 description 5
- 239000010409 thin film Substances 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000010410 dusting Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910002114 biscuit porcelain Inorganic materials 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- -1 cleaning Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000001192 hot extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000013502 plastic waste Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/0026—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B17/0404—Disintegrating plastics, e.g. by milling to powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B2017/042—Mixing disintegrated particles or powders with other materials, e.g. with virgin materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B2017/0424—Specific disintegrating techniques; devices therefor
- B29B2017/0428—Jets of high pressure fluid
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Protection Of Plants (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention belongs to the preparation technical fields of agricultural mulching, provide a kind of method that regenerated membrane plastics prepare agricultural mulching.It is characterized in directly collecting agricultural mulching, the films such as all kinds of packing plastics bags, without removal of impurities, except soil and oil removing, without cleaning, without hot melt, direct in-situ is mixed with talcum powder, high pressure compressed is closely knit, then jaw crusher is continued through, airslide disintegrating mill is crushed, it is isolated by talcum powder, the plastic film powder and talcum powder mixture dispersed, modified straw fiber is further added as connecting framework, it makes the bed, hot pressing obtains agricultural mulching, its significant advantage is that film impurities is overcome to be difficult to remove more, the high defect of cost recovery, significantly reduce film cost recovery, improve waste plastic film reuse ratio.
Description
Technical field
The invention belongs to the preparation technical field of agricultural mulching, provides a kind of regenerated membrane plastics and prepare agricultural mulching
Method.
Background technique
In general, plastics have excellent chemical stability, corrosion resistance, electrical insulating property, thermal insulation, excellent shock-absorbing and disappear
Sound sound insulation effect, and there is elasticity well, it can easy processing molding Nian Jie with the other materials such as metal, glass, timber well.
But plastics provided for us facilitate while, certain negative effects also are caused to environment.Since plastics have corrosion resistant
It loses, be not easily decomposed characteristic, accumulate over a long period simultaneously, seriously affected the ecological environment of the earth, while also resulting in the waste of resource.
Recycling as energy saving, protection environment a measure for waste plastic, is generally taken seriously, related to return
Utilization ways are received to be continuously developed out.Since the price advantage of regenerated plastics is prominent, benefit is evident, domestic technics of reclaim of plastic waste
Market has also made good, and not only recycling space is big but also good in economic efficiency, and especially bottle class, big part plastic products can be fast
Speed recycling and utilization.However, plastic film since light, contact sundries is mostly silt, grease etc., recycle compared with
It is few, huge environmental pollution is caused thus.
Plastic film multidigit agricultural mulching and the white pack of life, are floated everywhere by arbitrarily abandoning, and become notorious " white
Color pollution ".The clearing and retrieving of especially agripast residual film is very difficult, and the residual quantity of plastics agricultural mulching increases year by year in soil
Add, brings serious negative effect to agroecological environment and human health, constitute a threat to agricultural sustainable development.It is agricultural
Film mainly has a mulch and canopy film, and mulch is mainly PE film, and canopy mould has a PE, PE/EVA, PVC film, in recovery and reusing and recycling, one
As PE and PVC film are distinguished, agricultural film is generally dirtier, and is often entrained with soil, sandstone, grass roots, iron nail, iron wire etc.,
It removes iron impurities and cleans, the method for recycling is mainly granulated, and needs manual sorting to clean, after cleaned drying
Useless film directly can produce plastic products, such as basin, bucket, plastics flange etc. with hot-extrusion method.Researchers at home and abroad are in plastics
Film recycling aspect has multinomial achievement, and Zou et al. has invented a kind of recovery method of plastic film to reach economic and environment-friendly
The purpose of plastic film is handled, this technical solution mainly includes precipitating, washing, filters pressing and pulverising step.Pass through above step, modeling
Material film, which completes, removes impurity, greasy dirt, by crushing, has been made plastic grain, due in its composition containing a large amount of
High molecular material, can degrade use, can be as other rubber or the filler of plastic products, recycling and reusing.In addition,
The recovery method and device of a kind of soft plastic film from domestic garbage of Xie et al., can mainly mix in view of in house refuse
The flexible films such as miscellaneous a large amount of preservative film, polybag, these flexible films are different from other plastic products materials, if recycling together
Many puzzlements will be will cause；Therefore, be using the pliability of soft plastic film and its isolation in water, tiling property and
The speciality such as the adhesion of water, design it is a kind of can effectively, automatically from numerous house refuses, categorised collection goes out soft plastic
The method and device of film.In conclusion plastic film impurity is more, recovery difficult is big, recycling quality is low, after recycling using by
Limit, meanwhile, by higher cost when the recycled plastics films such as cleaning, and sewage is caused to pollute environment.
Summary of the invention
The defect of recycling and reusing is difficult to for existing plastic film, the present invention proposes a kind of regenerated membrane plastics preparation agriculture
With the method for mulch.It is characterized in directly collecting the films such as agricultural mulching, all kinds of packing plastics bags, without cleaning, except soil and removes
Oil, without cleaning, without hot melt, direct in-situ is mixed with talcum powder, and high pressure compressed is closely knit, then continues through jaw crushing
Machine, airslide disintegrating mill are crushed, and are isolated by talcum powder, the plastic film powder dispersed and talcum powder mixture, into
Modified straw fiber is added as connecting framework in one step, makes the bed, hot pressing obtains agricultural mulching, and significant advantage is to overcome film
Impurity is difficult to the defect removed, cost recovery is high more, significantly reduces film cost recovery, it is sharp again to improve waste plastic film
With rate.
A kind of method that in-situ regeneration plastic film prepares agricultural mulching of the present invention, can solve plastic film recovery difficult
Greatly, recycling quality is low, after recycling using the disadvantages of limited, cost recovery is high, meanwhile, without removal of impurities, remove soil and oil removing, be not necessarily to
Cleaning, without hot melt, preparation process is relatively simple, and low energy consumption, at low cost, is suitable for large-scale promotion.
To achieve the above object, specific technical solution of the present invention is as follows:
A kind of method that regenerated membrane plastics prepare agricultural mulching is characterized in mixing waste plastic film with talcum powder,
High pressure compressed is closely knit, is broken for particle using jaw crusher, then airslide disintegrating mill is used to crush to be powdered；Further it is added
Modified straw fiber is made the bed as connecting framework, and hot pressing obtains agricultural mulching；Specific step is as follows for preparation:
(1) the waste plastics films such as agricultural mulching, plastic packaging bag are collected, with talcum powder example 100:10-15 in mass ratio
It is uniformly mixed, and compresses it into closely knit bulk in compressor；Then being crushed using jaw crusher is bulky grain, further
Use airslide disintegrating mill that bulky grain is made to crush the powder-mixed material for partial size less than 100 μm；
(2) stalk fibre is immersed into the waterglass that mass concentration is 25% and impregnates 1-2h, drained, obtain wet modification straw
Stalk fiber；
(3) the resulting powder-mixed powder of step (1) is mixed with modified straw fiber with mass ratio 100:3-8
It is even, it is then continuously made the bed, rationally controls its tile thickness and uniformity, precompressed is carried out using roller, it is further continuous logical
It crosses hot-pressing roller and carries out hot pressing, the melting of powder-mixed powder connects to form regeneration agricultural mulching as skeleton using stalk fibre.
Preferably, the power of step (1) described jaw crusher is 10 ~ 30kW, and intake port is 200 ~ 400mm, out
Material mouth diameter can be adjusted in 10 ~ 30mm.
Preferably, step (1) airslide disintegrating mill is to spray formula airflow milling or circulating tube type airflow milling.
Preferably, the air pressure of step (1) described air-flow crushing is 0.7 ~ 0.85MPa.
Preferably, step (2) is described makes the bed with a thickness of 0.5 ~ 1.0mm；
Preferably, the hot pressing temperature of step (2) described hot-pressing roller is 110 ~ 140 DEG C.
In the present invention, talcum powder plays the role of three: on the one hand playing auxiliary granulation, twines waste film package
There is certain hardness and intensity after talcum powder, compression compact, be granulated and be crushed into powder convenient for broken；On the other hand play every
From effect, plastic film powder is made to be uniformly dispersed, when hot pressing heats, and is connected with each other again when cooling；The third aspect plays
Film performance improvement effect, in molding film article, talcum powder is scattered between plastic molecules, plays humidification.Cause
This, the additional amount of talcum powder should be controlled rationally, and should ensure that being uniformly mixed for talcum powder and waste plastic film before compression compact.
When being crushed in jaw crusher, Ying Jinliang keeps broken grain diameter smaller, to be advisable less than 5mm, to guarantee air-flow powder
The charging of broken machine is unobstructed and crushing effect.The air-flow crushing principles of action select spray formula airflow milling or circulating tube type airflow milling, pass through control
Gas pressure, gas consumption, pulverizer power and grinding time processed realize the partial size of smashed mixed-powder lower than 100 μm.
Since waste plastic loss of strength is serious, in order to more preferably make waste plastic form a film again in making the bed, use
Modified straw fiber is connecting framework, not only has cementability, and have certain bright effect, so that precompressed after making the bed
When be bonded the blank to form film, the farm-oriented mulch of preferable intensity is formed in hot pressing.First precompressed is answered before powdering hot pressing, to improve
The surface smoothness of bisque, film thickness made of compacting is more uniform, prevents the appearance in cavity.
More preferably, the regeneration farm-oriented mulch that the present invention obtains can dusting be automatically fine powder after completing water conservation, soil moisture conservation, no
Soil can be damaged.
The present invention provides a kind of methods that regenerated membrane plastics prepare agricultural mulching, compared with prior art, protrude
The characteristics of and excellent effect be:
1. preparation method of the invention, without cleaning to the plastic film of recycling, removing soil and oil removing, without cleaning, nothing
It needs to heat, is directly used in preparation regeneration farm-oriented mulch, technical process is simplified, and greatly reduces production energy consumption, is waste and old modeling
The recycling of material film provides efficient utilization ways.
It, can be automatic after use 2. the farm-oriented mulch that preparation method of the invention obtains meets the needs of soil water-retaining, soil moisture conservation
Dusting is fine powder, will not be damaged to soil.
3. preparation method of the invention improves the recovery utilization rate of plastic film, high production efficiency, the degree of automation
Height can be used for scale processing waste film.
Specific embodiment
In the following, the present invention will be further described in detail by way of specific embodiments, but this should not be interpreted as to the present invention
Range be only limitted to example below.Without departing from the idea of the above method of the present invention, according to ordinary skill
The various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
A kind of method that regenerated membrane plastics prepare agricultural mulching, specific step is as follows for preparation:
(1) the waste plastics films such as agricultural mulching, plastic packaging bag are collected, are mixed with talcum powder example 100:10 in mass ratio
Uniformly, and in compressor closely knit bulk is compressed it into；Then being crushed using jaw crusher is bulky grain, is further used
Crushing bulky grain spray formula airflow milling is powder-mixed material of the partial size less than 100 μm；
(2) stalk fibre is immersed into the waterglass that mass concentration is 25% and impregnates 1-2h, drained, obtain wet modification straw
Stalk fiber；
(3) the resulting powder-mixed powder of step (1) is uniformly mixed with modified straw fiber with mass ratio 100:3,
Then it is continuously made the bed, is made the bed with a thickness of 0.5mm, precompressed is carried out using roller, further continues through hot-pressing roller, hot pressing temperature
Degree is 140 DEG C of progress hot pressing, and the melting of powder-mixed powder connects to form regeneration agricultural mulching as skeleton using stalk fibre.
To the regeneration agricultural mulching that embodiment 1 obtains, its thickness, tensile strength and light transmittance are tested, obtained data are such as
Shown in table 1.It can be seen that: regeneration agricultural mulching produced by the present invention, internal talcum powder, stalk fibre play good enhancing
Effect, thin film strength and the requirement for substantially meeting agricultural film.
Embodiment 2
A kind of method that regenerated membrane plastics prepare agricultural mulching, specific step is as follows for preparation:
(1) the waste plastics films such as agricultural mulching, plastic packaging bag are collected, are mixed with talcum powder example 100:12 in mass ratio
Uniformly, and in compressor closely knit bulk is compressed it into；Then being crushed using jaw crusher is bulky grain, is further used
Crushing bulky grain spray formula airflow milling is powder-mixed material of the partial size less than 100 μm；
(2) stalk fibre is immersed into the waterglass that mass concentration is 25% and impregnates 1-2h, drained, obtain wet modification straw
Stalk fiber；
(3) the resulting powder-mixed powder of step (1) is uniformly mixed with modified straw fiber with mass ratio 100:5,
Then it is continuously made the bed, is made the bed with a thickness of 0.8mm, precompressed is carried out using roller, further continues through hot-pressing roller, hot pressing temperature
Degree is 120 DEG C of progress hot pressing, and the melting of powder-mixed powder connects to form regeneration agricultural mulching as skeleton using stalk fibre.
To the regeneration agricultural mulching that embodiment 2 obtains, its thickness, tensile strength and light transmittance are tested, obtained data are such as
Shown in table 1.It can be seen that: regeneration agricultural mulching produced by the present invention, internal talcum powder, stalk fibre play good enhancing
Effect, thin film strength and the requirement for substantially meeting agricultural film.
Embodiment 3
A kind of method that regenerated membrane plastics prepare agricultural mulching, specific step is as follows for preparation:
(1) the waste plastics films such as agricultural mulching, plastic packaging bag are collected, are mixed with talcum powder example 100:15 in mass ratio
Uniformly, and in compressor closely knit bulk is compressed it into；Then being crushed using jaw crusher is bulky grain, is further used
It is powder-mixed material of the partial size less than 100 μm that circulating tube type airflow milling, which crushes bulky grain,；
(2) stalk fibre is immersed into the waterglass that mass concentration is 25% and impregnates 1-2h, drained, obtain wet modification straw
Stalk fiber；
(3) the resulting powder-mixed powder of step (1) is uniformly mixed with modified straw fiber with mass ratio 100:5,
Then it is continuously made the bed, is made the bed with a thickness of 1.0mm, precompressed is carried out using roller, further continues through hot-pressing roller, hot pressing temperature
Degree is 110 DEG C of progress hot pressing, and the melting of powder-mixed powder connects to form regeneration agricultural mulching as skeleton using stalk fibre.
To the regeneration agricultural mulching that embodiment 3 obtains, its thickness, tensile strength and light transmittance are tested, obtained data are such as
Shown in table 1.It can be seen that: regeneration agricultural mulching produced by the present invention, internal talcum powder, stalk fibre play good enhancing
Effect, thin film strength and the requirement for substantially meeting agricultural film.
Embodiment 4
A kind of method that regenerated membrane plastics prepare agricultural mulching, specific step is as follows for preparation:
(1) the waste plastics films such as agricultural mulching, plastic packaging bag are collected, are mixed with talcum powder example 100:15 in mass ratio
Uniformly, and in compressor closely knit bulk is compressed it into；Then being crushed using jaw crusher is bulky grain, is further used
Crushing bulky grain spray formula airflow milling is powder-mixed material of the partial size less than 100 μm；
(2) stalk fibre is immersed into the waterglass that mass concentration is 25% and impregnates 1-2h, drained, obtain wet modification straw
Stalk fiber；
(3) the resulting powder-mixed powder of step (1) is uniformly mixed with modified straw fiber with mass ratio 100:8,
Then it is continuously made the bed, is made the bed with a thickness of 0.5mm, precompressed is carried out using roller, further continues through hot-pressing roller, hot pressing temperature
Degree is 130 DEG C of progress hot pressing, and the melting of powder-mixed powder connects to form regeneration agricultural mulching as skeleton using stalk fibre.
To the regeneration agricultural mulching that embodiment 4 obtains, its thickness, tensile strength and light transmittance are tested, obtained data are such as
Shown in table 1.It can be seen that: regeneration agricultural mulching produced by the present invention, internal talcum powder, stalk fibre play good enhancing
Effect, thin film strength and the requirement for substantially meeting agricultural film.
Embodiment 5
A kind of method that regenerated membrane plastics prepare agricultural mulching, specific step is as follows for preparation:
(1) the waste plastics films such as agricultural mulching, plastic packaging bag are collected, are mixed with talcum powder example 100:10 in mass ratio
Uniformly, and in compressor closely knit bulk is compressed it into；Then being crushed using jaw crusher is bulky grain, is further used
It is powder-mixed material of the partial size less than 100 μm that circulating tube type airflow milling, which crushes bulky grain,；
(2) stalk fibre is immersed into the waterglass that mass concentration is 25% and impregnates 1-2h, drained, obtain wet modification straw
Stalk fiber；
(3) the resulting powder-mixed powder of step (1) is uniformly mixed with modified straw fiber with mass ratio 100:8,
Then it is continuously made the bed, is made the bed with a thickness of 1.0mm, precompressed is carried out using roller, further continues through hot-pressing roller, hot pressing temperature
Degree is 140 DEG C of progress hot pressing, and the melting of powder-mixed powder connects to form regeneration agricultural mulching as skeleton using stalk fibre.
To the regeneration agricultural mulching that embodiment 5 obtains, its thickness, tensile strength and light transmittance are tested, obtained data are such as
Shown in table 1.It can be seen that: regeneration agricultural mulching produced by the present invention, internal talcum powder, stalk fibre play good enhancing
Effect, thin film strength and the requirement for substantially meeting agricultural film.
Comparative example 1
A kind of method that regenerated membrane plastics prepare agricultural mulching, specific step is as follows for preparation:
(1) the waste plastics films such as agricultural mulching, plastic packaging bag are collected, are same batch of waste plastic film with embodiment 5,
It is uniformly mixed with talcum powder example 100:10 in mass ratio, and compresses it into closely knit bulk in compressor；Then jaw is utilized
It is bulky grain that crusher, which crushes, further uses circulating tube type airflow milling that bulky grain is made to crush the powder for partial size less than 100 μm
Shape mixture；
(2) stalk fibre is immersed into the waterglass that mass concentration is 25% and impregnates 1-2h, drained, obtain wet modification straw
Stalk fiber；
(3) the resulting powder-mixed powder of step (1) is uniformly mixed with modified straw fiber with mass ratio 100:8,
Then it squeezes out melting calendering and farm-oriented mulch is prepared.
The regeneration agricultural mulching that comparative example 1 obtains, tests its thickness, tensile strength and light transmittance, obtained data such as table 1
It is shown.
Comparative example 2
A kind of method that regenerated membrane plastics prepare agricultural mulching, specific step is as follows for preparation:
(1) the waste plastics films such as agricultural mulching, plastic packaging bag are collected, are same batch of waste plastic film with embodiment 5,
It is uniformly mixed with talcum powder example 100:10 in mass ratio, and compresses it into closely knit bulk in compressor；Then jaw is utilized
It is bulky grain that crusher, which crushes, further uses circulating tube type airflow milling that bulky grain is made to crush the powder for partial size less than 100 μm
Shape mixture；
(2) the resulting powder-mixed powder of step (1) is continuously made the bed, is made the bed with a thickness of 1.0mm, using roller
Precompressed is carried out, hot-pressing roller is further continued through, hot pressing temperature is 140 DEG C of progress hot pressing, forms regeneration agricultural mulching.
The regeneration agricultural mulching that comparative example 1 obtains, tests its thickness, tensile strength and light transmittance, obtained data such as table 1
It is shown.
Table 1:
| Specific embodiment | Thickness (mm) | Tensile strength (MPa) | Light transmittance (%) |
| Embodiment 1 | 0.21 | 11.5 | 61 |
| Embodiment 2 | 0.33 | 10.5 | 58 |
| Embodiment 3 | 0.45 | 12.7 | 71 |
| Embodiment 4 | 0.20 | 11.9 | 66 |
| Embodiment 5 | 0.38 | 10.2 | 65 |
| Comparative example 1 | 0.38 | 6.3 | 67 |
| Comparative example 2 | 0.38 | 5.2 | 64 |
By carrying out test and comparison to obtained farm-oriented mulch, the present invention is by most directly crushing the plastic film of recycling
Afterwards, it is assisted by modified straw fiber, so that waste plastic is formed a film again by making the bed, use modified straw fiber to connect bone
Frame not only has cementability, and has certain bright effect, so that the blank to form film is bonded after making the bed when precompressed,
The farm-oriented mulch of preferable intensity is formed in hot pressing.And comparative example 1 is rolled using traditional hot-melt extruded, due to being difficult to ensure
The enhancement of stalk fibre, obtained film strength are difficult to meet the requirement of mulch；Comparative example 2 is not due to having using stalk fibre
Connecting framework, intensity are equally lower.Therefore, the present invention has significant advantage, provides for the recycling of waste plastic film
Efficient utilization ways.
Claims (6)
1. a kind of method that regenerated membrane plastics prepare agricultural mulching is characterized in mixing waste plastic film with talcum powder, high
Compression compact is pressed, particle is broken for using jaw crusher, then airslide disintegrating mill is used to crush to be powdered；It is further added and changes
Property stalk fibre is made the bed, hot pressing obtains agricultural mulching as connecting framework；Specific step is as follows for preparation:
(1) agricultural mulching, plastic packaging bag waste plastic film are collected, is mixed with talcum powder example 100:10-15 in mass ratio
It is even, and closely knit bulk is compressed it into compressor；Then being crushed using jaw crusher is bulky grain, further uses gas
It is powder-mixed material of the partial size less than 100 μm that stream pulverizer, which crushes bulky grain,；
(2) stalk fibre is immersed into the waterglass that mass concentration is 25% and impregnates 1-2h, drained, it is fine to obtain wet modified straw
Dimension；
(3) the resulting powder-mixed powder of step (1) is uniformly mixed with modified straw fiber with mass ratio 100:3-8, so
After continuously made the bed, rationally control its tile thickness and uniformity, precompressed carried out using roller, further continues through hot pressing
Roller carries out hot pressing, and the melting of powder-mixed powder connects to form regeneration agricultural mulching as skeleton using stalk fibre.
2. a kind of method that regenerated membrane plastics prepare agricultural mulching according to claim 1, it is characterised in that: step (1)
The power of the jaw crusher is 10 ~ 30kW, and intake port is 200 ~ 400mm, and discharge port diameter can be adjusted in 10 ~ 30mm
Section.
3. a kind of method that regenerated membrane plastics prepare agricultural mulching according to claim 1, it is characterised in that: step (1)
The airslide disintegrating mill is to spray formula airflow milling or circulating tube type airflow milling.
4. a kind of method that regenerated membrane plastics prepare agricultural mulching according to claim 1, it is characterised in that: step (1)
The air pressure of the airslide disintegrating mill is 0.7 ~ 0.85MPa.
5. a kind of method that regenerated membrane plastics prepare agricultural mulching according to claim 1, it is characterised in that: step (3)
It is described to make the bed with a thickness of 0.5 ~ 1.0mm.
6. a kind of method that regenerated membrane plastics prepare agricultural mulching according to claim 1, it is characterised in that: step (3)
The hot pressing temperature of the hot-pressing roller is 110 ~ 140 DEG C.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106009394A (en) * | 2016-06-28 | 2016-10-12 | 江苏金材科技有限公司 | Environment-friendly pvc agricultural film and preparation method thereof |
| CN107043483A (en) * | 2017-01-20 | 2017-08-15 | 孙佳音 | mulching film recycling method |
| CN107151458A (en) * | 2016-03-02 | 2017-09-12 | 黑龙江鑫达企业集团有限公司 | A kind of inexpensive stalk polyethylene film and preparation method thereof |
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| JP2001032130A (en) * | 1999-07-19 | 2001-02-06 | Heisei Polymer Co Ltd | Biodegradable recycled yarn and biodegradable recycled film |
| US20060006564A1 (en) * | 2001-01-16 | 2006-01-12 | Debesh Maldas | Process for making modified cellulosic filler from recycled plastic waste and forming wood substitute articles |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107151458A (en) * | 2016-03-02 | 2017-09-12 | 黑龙江鑫达企业集团有限公司 | A kind of inexpensive stalk polyethylene film and preparation method thereof |
| CN106009394A (en) * | 2016-06-28 | 2016-10-12 | 江苏金材科技有限公司 | Environment-friendly pvc agricultural film and preparation method thereof |
| CN107043483A (en) * | 2017-01-20 | 2017-08-15 | 孙佳音 | mulching film recycling method |
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