CN105064043A - Vegetable fiber sand preventing and solidifying net surface anti-aging treating agent and preparation method thereof - Google Patents

Abstract

The invention belongs to an anti-aging treatment agent for the surface of a plant fiber sand-blocking sand-fixing net and a preparation method thereof. Treatment agents are divided into solvent-based treatment agents and water-based treatment agents. The treatment agent is one or more of the film-forming materials nitrile rubber, nitrile latex or neoprene latex, and ethylene-propylene latex, mixed solvent or water, anti-aging agent, waterproof agent, cold-resistant toughening agent The liquid composed of other additives is prepared by dissolving nitrile rubber in a mixed solvent, and then adding an appropriate amount of other additives. While retaining the technical advantages of the plant fiber sand-resistance and sand-fixing net, such as degradability and small wind resistance, the invention endows it with properties such as anti-aging, high and low temperature resistance, water resistance, and tear resistance. It effectively solves the shortcomings of plant fiber sand-blocking and sand-fixing nets such as aging resistance, poor mechanical properties, and short service life, effectively reduces the overall cost of the product, and provides technical support for large-scale promotion.

Description

Surface anti-aging treatment agent for plant fiber sand-resistance and sand-fixation net and preparation method thereof

technical field

The invention belongs to a surface anti-aging treatment agent for plant fiber sand-blocking and sand-fixing nets and a preparation method thereof.

Background technique

Land desertification is one of the most serious ecological problems facing China and the world today. With the development of economy, resource development and the needs of military industry, various production and living facilities such as railways, highways and mines built in desert areas are becoming more and more The more wind and sand activities are threatening people's production and life, the more serious they are. It is understood that at present, my country's desertified land and soil erosion control technologies mainly include aerial seeding sand control technology, sandy land enclosure technology, plant sand control technology, engineering sand control technology and chemical sand fixation technology, etc. The materials used for engineering sand control mainly include: "Grass Grid", "Stone Grid", "Plastic Net", "Plant Fiber Net", etc. Among them, the plant fiber sand-blocking and sand-fixing net has the advantages of degradable grass-collecting grid and easy construction of plastic nets. play a role. However, due to the harsh climate environment in the desert area, the annual sunshine time is long, the corresponding ultraviolet time is also long, the temperature difference between cold and hot changes greatly, and there are many windy and sandy weather. The defects of poor tear resistance and aging resistance of plant fiber net restrict its large-scale promotion.

Contents of the invention

Based on the above, the object of the present invention is to provide a surface anti-aging treatment agent for the plant fiber sand-resistance and sand-fixation net. By spraying the surface treatment agent on the plant fiber sand-resistance and sand-fixation net, the plant fiber sand-resistance and sand-fixation net has anti-aging and stiffening properties. Moderate performance. The plant fiber sand-blocking and sand-fixing net can play a greater role in the prevention and control of wind and sand disasters.

Another object of the present invention is to provide a method for preparing the anti-aging treatment agent for the surface of the plant fiber sand-resistance and sand-fixation net,

The purpose of the present invention is to realize through the following technical solutions:

1. A surface anti-aging treatment agent for plant fiber sand-resistance and sand-fixing net, the treatment agent is a solvent-based treatment agent and a water-based treatment agent, characterized in that:

a Solvent-based treatment agent formula (by weight): 5 parts of nitrile rubber (2707), 50-200 parts of mixed solvent composed of ethyl acetate:cyclohexanone=9:0.5~1, anti-aging agent RD0.~1 ~0.25 parts, waterproofing agent polymethoxytriethoxysiloxane 0.05~0.2 parts, nano-zinc oxide/nano-silicon dioxide/nano-titanium dioxide 0.1-0.25 parts, cold-resistant plasticizer dioctyl adipate 0.5 ~0.75 parts;

b water-based treatment agent formula (by weight): 45% water-based film-forming material nitrile rubber emulsion/neoprene rubber emulsion/ethylene-propylene rubber emulsion 100 parts, 30% water-based L-R518 active toughening agent 4.5~ 9 parts, anti-aging agent (light stabilizer) zinc oxide/silicon dioxide/titanium dioxide 0.9~2.25 parts, water-based silicone waterproofing agent 15~30 parts, water 200~400 parts.

2. prepare the method for solvent type treatment agent described in claim 1, it is characterized in that:

a After cutting the solid nitrile rubber 2707 into pieces, dissolve it in a mixed solvent of ethyl acetate and cyclohexanone to form a uniform and transparent solution;

b. Add anti-ultraviolet agent nano-silica, nano-titanium dioxide, or nano-zinc oxide to the solution obtained in step a;

c. Add anti-aging agent RD to the solution obtained in step a, and 0.05-0.2 parts of polymethoxytriethoxysiloxane, a cold-resistant toughening agent, dioctyl adipate waterproofing agent;

d Stir and disperse the solution obtained in steps a and b at 1000-1200 rpm for 5 minutes to obtain a solvent-based anti-aging treatment agent for the surface of the plant fiber sand-blocking sand-fixing net.

3. prepare the method for the described water-based treatment agent of claim 1, it is characterized in that:

a Add 30% water-based L-R518 active toughening agent to 45% water-based film-forming material nitrile rubber emulsion/neoprene rubber emulsion/ethylene-propylene rubber emulsion, stir and disperse evenly

b Add anti-aging agent (light stabilizer) zinc oxide/silicon dioxide/titanium dioxide to the emulsion in step a, stir and disperse evenly;

c. Stir and disperse the emulsion obtained in steps a and b at 1000-1200 rpm for 5 minutes to obtain a water-based surface treatment agent for plant fiber sand-blocking and sand-fixing net.

Wherein the consumption of said cold-resistant plasticizer is preferably 12% of the film-forming material nitrile rubber 2707.

The dosage of the above active toughening agent L-R518 is preferably 5% of the film-forming material nitrile latex/chloroprene latex/ethylene propylene latex.

Advantage of the present invention and the beneficial effect that produce are:

1. When the plant fiber sand-resistance and sand-fixation net anti-aging treatment agent of the present invention is used, the surface treatment agent is sprayed horizontally and reciprocatingly evenly on the plant fiber sand-resistance and sand-fixation net through the spray nozzle, so that the plant fiber sand-resistance and sand-fixation net per square meter The spray amount reaches 500~700g, and then it can be dried at room temperature.

2. The plant fiber sand-blocking and sand-fixing net treated by the present invention has increased stiffness, good elasticity and flexibility, and will not be damaged by the wind because the net is too hard; the plant fiber sand-blocking and sand-fixing net has anti-aging performance It is greatly enhanced, but has very little impact on the environment. It will not cause "white pollution" like plastic nets after use, and it will not have a short service life like untreated plant fiber nets. In addition, it also retains the original technical advantages of degradable and small wind resistance of the plant fiber sand-resistance and sand-fixing net.

3. The preparation method of the present invention is simple, and the selected materials are all commercially available products. The plant fiber sand-blocking and sand-fixing net sprayed with the treatment agent can be popularized and applied in a large area, and play a role in the control of desertification land and water and soil loss in my country.

Detailed ways

The present invention is again and detailed description to technical scheme of the present invention in conjunction with embodiment:

Example 1

A method for preparing a solvent-based plant fiber sand-repelling sand-fixing net surface treatment agent, the steps are:

(1) Cut 5 parts of nitrile rubber 2707 into pieces and dissolve in 100 parts of ethyl acetate:cyclohexanone=9:0.5~2 mixed solvent to form a uniform and transparent solution;

(2) add 0.15 part of nano silicon dioxide and 0.20 nanometer titanium dioxide in the above-mentioned solution;

(3) Add 0..2 parts of anti-aging agent RD, 0.6 parts of dioctyl adipate of cold-resistant toughening agent, and 0.1 part of waterproofing agent polymethyltriethoxysilane into the above solution;

(4) Stir and disperse the obtained solution at 1000-1200 rpm for 5 minutes to obtain a solvent-based anti-aging treatment agent for the surface of the plant fiber sand-blocking and sand-fixing net.

(5) The resulting treating agent is evenly sprayed on the plant fiber sand-blocking and sand-fixing net, and dried;

(6) The treated plant fiber sand-resistance and sand-fixation net should be used at room temperature, and the construction time should be <6 minutes; (2) After use, the weight of the plant fiber sand-resistance and sand-fixation net will increase by 25~50g per square meter; (3) After accelerated aging for 1440 hours , the strength retention rate is 61.2%, which is 21.4% higher than that of untreated, and the seven-day water absorption is reduced to below 2.4%, which is far lower than 362% when untreated.

Example 2

A method for preparing a water-based plant fiber sand-blocking sand-fixing net surface treatment agent, the steps are:

(1) Add 30% water-based L-R518 active toughening agent to 100 parts of the water-based film-forming material nitrile rubber emulsion/neoprene rubber emulsion/ethylene-propylene rubber emulsion, which is at least one of them, stir and disperse evenly

(2) Add 7.5 parts of 30% water-based L-R518 active toughening agent to the above emulsion, stir and disperse evenly;

(3) Add 1.35 parts of anti-aging agent (light stabilizer) zinc oxide/silicon dioxide/titanium dioxide and 20 parts of silicone water repellent to the above emulsion, stir and disperse evenly;

(3) Add 0.2 part of antioxidant RD to the above solution, 0.6 part of active toughening agent and zinc oxide/silicon dioxide/titanium dioxide, and 0.1 part of water repellent polymethyltriethoxysilane;

(4) Disperse the obtained emulsion at 1000-1200 rpm for 5 minutes to obtain a water-based surface treatment agent for plant fiber sand-resistance and sand-fixation net.

(5) The resulting treating agent is evenly sprayed on the plant fiber sand-blocking and sand-fixing net, and dried;

(6) The water-based plant fiber sand-blocking and sand-fixing net after treatment, the use temperature is 120 degrees, and the construction time is <6 minutes; after 1440 hours of accelerated aging test, the strength retention rate is 63.6%, which is 26.2% higher than that without treatment. Seven-day water absorption was reduced to 4.1%, far below the untreated 362%.

The treatment agent sprayed plant fiber sand-blocking sand-fixing net made according to the above formula has the following characteristics: (1) The use temperature of the solvent type is normal temperature, and the use temperature of the water-based type is 120 degrees, and the construction time is less than 6 minutes; (2) After use The weight of the plant fiber sand-resistance and sand-fixation net increases by 25~50g per square meter; (3) After accelerated aging for 1440 hours, the tear resistance of the plant fiber sand-resistance and sand-fixation net can be increased by more than 20%; (4) The water absorption rate of the sample soaked in water for half a month Not more than 5% of its own weight,

In order to verify the anti-aging, high and low temperature resistance, and water resistance of the plant fiber sand-resistance and sand-fixing net, the following experiments are explained:

Explanation of experimental equipment and experimental methods:

Experimental content: Comparison of anti-aging performance of plant fiber sand-blocking and sand-fixing net before and after spraying treatment agent.

Experimental equipment: UV aging box GDWZ-250C.

Experimental conditions: According to JB/T16422.3 "Plastic Laboratory Light Source Exposure Test Method Part 3: Fluorescent UV Lamp" standard, in the UV accelerated aging test box, use UVB tube (313nm) fluorescent UV lamp, 60 ℃ / 8h light , 50°C/4h condensation, cycle test for 2400 hours, test the tensile strength every 240 hours, the width of the tensile strength sample is 50mm, the test fixture is 50mm, and the tensile speed is 100mm/min.

Experimental results: After 1440 hours of accelerated aging test of the untreated plant fiber sand-resistance and sand-fixation net, the strength of the plant fiber sand-resistance and sand-fixation net has a retention rate of 50.4%; The maintenance rate is 61.2%, which is 21.4% higher than that without treatment, and the water absorption rate in seven days is reduced to 2.4%, which is far lower than the untreated 362%. The retention rate is 63.6%, which is 26.2% higher than that of untreated, and the water absorption rate is reduced to 4.1%, which is far lower than the untreated 362%.

Experimental conclusion: the anti-aging and water resistance of the plant fiber sand-resistance and sand-fixation net treated with the anti-aging agent of the present invention are obviously better than the untreated plant fiber sand-resistance and sand-fixation net, and the plant fiber sand resistance and sand-fixation net can be removed after use. The anti-aging performance is improved by more than 20%.

Claims (5)

1. string hinders the anti-aging finishing agent in husky Sand-fixation net surface, and finishing agent comprises solvent-borne type finishing agent and aqua type finishing agent, it is characterized in that:

A solvent-borne type treatment agent formula (by weight) is: acrylonitrile-butadiene rubber (2707) 5 parts, ethyl acetate: the mixed solvent 50-200 parts that cyclohexanone=9:0.5 ~ 1 forms, anti-aging agent RD 0. ~ 1 ~ 0.25 part, 0.05 ~ 0.2 part, waterproofing agent polymethoxy triethoxy silica alkane, nano zine oxide/nano silicon/nano titanium oxide 0.1 ~ 0.25 part, cold-resistant plasticizer dioctyl adipate 0.5 ~ 0.75 part;

B aqua type formula is: in 45% waterborne film-forming material acrylonitrile-butadiene rubber latex/neoprene latex/EP rubbers emulsion 100 parts, 30% water base L-R518 endurable active toughener 4.5 ~ 9 parts, age resistor (light stabilizer) zinc oxide/earth silicon/titanic oxide 0.9 ~ 2.25 part, water-based organic silicon waterproof agent 15 ~ 30 parts, 200 ~ 400 parts, water.

2. prepare the method for solvent-borne type finishing agent described in claim 1, it is characterized in that:

After solid nitrile rubber 2707 is cut into fragment by a, be dissolved in the mixed solvent of ethyl acetate and cyclohexanone, form the solution of transparent and homogeneous;

B adds ultraviolet (UV) resistant agent nano silicon, nano titanium oxide in a step gained solution, or nano zine oxide;

C adds anti-aging agent RD again in a step gained solution, cold resistance flexibilizer dioctyl adipate, waterproofing agent polymethoxy triethoxy silica alkane;

A, b step gained solution with 1000-1200 rev/min of dispersed with stirring 5min, are namely obtained solvent-borne type string and hinder the anti-aging finishing agent in husky Sand-fixation net surface by d.

3. the preparation method of a kind of aqua type finishing agent according to claim 2, is characterized in that the consumption of above-mentioned cold resistant plasticizer is preferably 12% of filmogen acrylonitrile-butadiene rubber 2707.

4. prepare the method for aqua type finishing agent described in claim 1, it is characterized in that:

A is in waterborne film-forming material acrylonitrile-butadiene rubber latex/neoprene latex/EP rubbers emulsion, and add 30% water base L-R518 endurable active toughener, dispersed with stirring is even

B adds age resistor zinc oxide/earth silicon/titanic oxide in a step emulsion, and dispersed with stirring is even;

C just a, b step gained emulsion, with 1000-1200 rev/min of dispersed with stirring 5min, can obtain aqua type string and hinder husky Sand-fixation net surface conditioning agent.

5. the preparation method of a kind of aqua type finishing agent according to claim 4, is characterized in that water base L-R518 endurable active toughener L-R518 consumption is preferably 5% of waterborne film-forming material acrylonitrile-butadiene rubber latex/neoprene latex/EP rubbers emulsion.