CN111217980B - Shock-absorbing material and preparation method thereof - Google Patents
Shock-absorbing material and preparation method thereof Download PDFInfo
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- CN111217980B CN111217980B CN202010155121.9A CN202010155121A CN111217980B CN 111217980 B CN111217980 B CN 111217980B CN 202010155121 A CN202010155121 A CN 202010155121A CN 111217980 B CN111217980 B CN 111217980B
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- 239000011359 shock absorbing material Substances 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 91
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 30
- 229920000570 polyether Polymers 0.000 claims abstract description 30
- 239000012948 isocyanate Substances 0.000 claims abstract description 28
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 28
- 229920005906 polyester polyol Polymers 0.000 claims abstract description 16
- 229920005862 polyol Polymers 0.000 claims abstract description 14
- 150000003077 polyols Chemical class 0.000 claims abstract description 14
- 230000006835 compression Effects 0.000 claims abstract description 12
- 238000007906 compression Methods 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 239000004848 polyfunctional curative Substances 0.000 claims abstract description 10
- 239000012075 bio-oil Substances 0.000 claims abstract description 8
- 239000003054 catalyst Substances 0.000 claims description 33
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical group OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 15
- 239000000126 substance Substances 0.000 claims description 13
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 claims description 8
- 150000002009 diols Chemical class 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 150000001412 amines Chemical class 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 5
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 5
- 238000005187 foaming Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 239000003921 oil Substances 0.000 claims description 4
- 239000011358 absorbing material Substances 0.000 claims 2
- 230000035939 shock Effects 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 229920002635 polyurethane Polymers 0.000 description 14
- 239000004814 polyurethane Substances 0.000 description 14
- 239000000203 mixture Substances 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 4
- 229940043237 diethanolamine Drugs 0.000 description 4
- 229960004418 trolamine Drugs 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 239000004636 vulcanized rubber Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/6696—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/36 or hydroxylated esters of higher fatty acids of C08G18/38
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
- A43B13/04—Plastics, rubber or vulcanised fibre
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/18—Catalysts containing secondary or tertiary amines or salts thereof
- C08G18/1825—Catalysts containing secondary or tertiary amines or salts thereof having hydroxy or primary amino groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/36—Hydroxylated esters of higher fatty acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
- C08G18/4812—Mixtures of polyetherdiols with polyetherpolyols having at least three hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4825—Polyethers containing two hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4829—Polyethers containing at least three hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2410/00—Soles
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
A shock absorption material and a preparation method thereof, relating to the technical field of sports shoe soles. A method of making a shock absorbing material comprising: reacting the first main material with the second main material at the temperature of 45-50 ℃; wherein the weight ratio of the first main material to the second main material is 100: 68-72. The first main material comprises 55-65:20-35:3-20:2-3 weight ratio of bio-oil, polyester polyol, polyether polyol and hardener; the second main material is modified isocyanate. The preparation method can prepare the shock-absorbing material with the rebound rate of less than 10 percent and the compression deformation rate of less than 20 percent.
Description
Technical Field
The application relates to the technical field of sports shoe soles, in particular to a shock-absorbing material and a preparation method thereof.
Background
The sole material of sports shoes is required to have certain elasticity (the elasticity is less than 14 percent) and good shock absorption and buffering performance, so that the sole material can effectively protect the nerves of feet of people from being impacted violently, can provide buffering comfort and can meet the requirements of sports functions.
Disclosure of Invention
The present embodiment is directed to a shock absorbing material and a method for manufacturing the same, which can manufacture a shock absorbing material having a rebound resilience of less than 10% and a compression deformation rate of less than 20%.
The embodiment of the application is realized as follows:
in a first aspect, an embodiment of the present application provides a method for preparing a shock absorbing material, including: reacting the first main material with the second main material at the temperature of 45-50 ℃; wherein the weight ratio of the first main material to the second main material is 100: 68-72;
the first main material comprises 55-65:20-35:3-20:2-3 weight ratio of bio-oil, polyester polyol, polyether polyol and hardener; the second main material is modified isocyanate.
In a second aspect, embodiments of the present application provide a shock absorbing material made by the method of making a shock absorbing material according to the embodiments of the first aspect, the shock absorbing material having a compression set of less than 20% and a rebound set of less than 10%.
The shock absorption material and the preparation method thereof provided by the embodiment of the application at least have the following beneficial effects:
the polyester polyol and the polyether polyol in the first main material react with the modified isocyanate substances at the temperature of 45-50 ℃ according to a certain proportion to generate the polyurethane material, wherein the biological oil plays a foaming role so that the polyurethane material has abundant holes, the hardening agent plays a hardening role for the polyurethane material, the dosage proportion of the biological oil, the polyester polyol, the polyether polyol and the hardening agent is proper, and the finally prepared polyurethane material has the compression deformation rate of less than 20% and the rebound resilience of less than 10%, and can be suitable for sports soles.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
It should be noted that "and/or" in the present application, such as "scheme a and/or scheme B" means that the three modes of scheme a alone, scheme B alone, scheme a plus scheme B may be used.
The shock-absorbing material and the method for producing the same according to the embodiments of the present application will be specifically described below.
A method of making a shock absorbing material comprising: the first main material and the second main material react at the temperature of 45-50 ℃.
Wherein the weight ratio of the first main material to the second main material is 100: 68-72. Illustratively, the weight ratio of the first major material to the second major material is 100:68, 100:70, or 100: 72.
The first main material comprises 55-65:20-35:3-20:2-3 weight ratio of bio-oil, polyester polyol, polyether polyol and hardener; the second main material is modified isocyanate.
The polyester polyol and the polyether polyol contain hydroxyl, the modified isocyanate substance contains NCO groups, the polyester polyol and the polyether polyol react with the modified isocyanate substance at the temperature of 45-50 ℃ according to the proportion to generate the polyurethane material, wherein the bio-oil plays a foaming role to enable the polyurethane material to have rich holes, the polyurethane material has certain elasticity, the hardening agent can adjust the elasticity of the polyurethane material, the proportion of the hardening agent in the first main material is controlled to be in accordance with the range, the resilience of the polyurethane material is enabled to be less than 10%, and the compression deformation rate is enabled to be less than 20%.
Illustratively, the weight ratio of bio-oil, polyester polyol, polyether polyol and hardener is 60-65:20-25:3-10:2-3, 55-60:25-35:3-10:2-3, 55-60:25-30:3-8:2-3, 55-60:25-35:10-20:2-3, 55-60:30-35:3-10:2-3, 60-65:25-35:5-10:2-3, or 60-65:30-35:10-20: 2-3. Illustratively, the hardener is selected from diethylene glycol.
Illustratively, the polyether polyol is NJ4431 polyether polyol, which can function as open cells, such that the polyurethane material has both open and closed cells, with a closed cell content of up to 70%.
Illustratively, the hydroxyl value of the polyester polyol is 110-115mgKOH/g, and the polyester polyol has a higher hydroxyl value, so that the polyester polyol can better and more completely react with NCO groups of the modified isocyanate substances.
Further, in one possible embodiment, the modified isocyanate-based material contains 22.8 to 23.2 weight percent NCO groups. The NCO group modified isocyanate substance with the proportion participates in the reaction, so that the shock absorbing material has better shock absorbing effect.
Illustratively, the preparation method of the second main material comprises the following steps: polyether diol, polyether triol and isocyanate are reacted at 75-80 deg.c.
The polyether diol and polyether triol can make isocyanate completely react at 75-80 deg.C to produce modified isocyanate material whose NCO is 22.8-23.2 wt%. Illustratively, the weight ratio of polyether diol, polyether triol, and isocyanate is 38-42:8-12:48-52, alternatively 40:10:50, 38:12:50, 39:11:50, 38:10:52, or 38:11: 51. The above-mentioned weight ratios of polyether diol, polyether triol and isocyanate enable the reaction to be more complete.
Further, in a possible embodiment, the step of reacting the first main material with the second main material at a temperature of 45-50 ℃ comprises: mixing the first main material with a catalyst to obtain a mixture, and mixing the mixture with the second main material to react at the temperature of 45-50 ℃; the catalyst comprises a front-stage catalyst and a rear-stage catalyst, and the front-stage catalyst is solid amine; the back-end catalyst comprises at least one of diethanolamine and triethanolamine.
The front-stage catalyst is mainly used for catalyzing and foaming raw materials, and the rear-stage catalyst is mainly used for shortening the shaping time after catalysis. The solid amine can accelerate the reaction of hydroxyl and NCO groups, and the diethanol amine and the triethanol amine can accelerate the formed polyurethane material to form gel.
In addition, the amount of the catalyst also affects the shape of the pores of the polyurethane material, the time and the like, and for example, the weight ratio of the first main material to the front-stage catalyst and the rear-stage catalyst in the embodiment of the present application is 100:1.1-1.3:0.2-0.3, which enables the polyurethane material to form a closed-cell structure, and the degree of polyurethane crosslinking is better. Illustratively, the weight ratio of the first main material to the front-stage catalyst and the rear-stage catalyst is 100:1.2:0.2, 100:1.1:0.2, 100:1.3:0.3 or 100:1.2: 0.3.
In a second aspect, embodiments of the present application further provide a shock absorbing material, which is manufactured by the method for manufacturing a shock absorbing material according to the embodiment of the first aspect, and which has a rebound resilience of less than 10% and a compression deformation rate of less than 20%. The shock-absorbing material has proper rebound resilience and compression deformation rate, has good shock-absorbing effect, and is suitable for being used as a sports sole material.
The features and properties of the present application are described in further detail below with reference to examples.
Example 1
This embodiment provides a shock absorbing material, and the manufacturing method thereof includes the following steps:
polyether diol, polyether triol and isocyanate in the weight ratio of 40:10:50 are reacted at 75 deg.c to obtain modified isocyanate matter. Heating the modified isocyanate substance at 50 ℃ for 60min, adding the heated modified isocyanate substance into a material cylinder B of a filling machine, and heating the material cylinder B to 50 ℃.
Adding the front-stage catalyst of solid amine and the rear-stage catalyst of diethanolamine into the first main material, stirring for 15 minutes to obtain a mixture, and adding the mixture into a material cylinder A of a filling machine. Wherein the weight ratio of the first main material to the front-stage catalyst to the rear-stage catalyst is 100:1.2: 0.25; the first main material comprises bio-oil, polyester polyol, polyether polyol and hardener diethylene glycol in a weight ratio of 60:32.5:5: 2.5.
The steel mould is fixed on a u-shaped assembly line, the U-shaped assembly line is heated to 45 ℃ by an oven, the mould is opened, and the pouring is carried out by a pouring machine, wherein the weight ratio of the first main material to the second main material is 100: 70.
and opening the die to take materials after the die is closed for 6 minutes by an oven to obtain the shock-absorbing material.
Example 2
This embodiment provides a shock absorbing material, and the manufacturing method thereof includes the following steps:
Heating the modified isocyanate substance at 45 ℃ for 60min, adding the heated modified isocyanate substance into a material cylinder B of a filling machine, and heating the material cylinder B to 45 ℃.
Adding the front-stage catalyst, namely the solid amine, into the first main material, then adding the rear-stage catalyst, namely the triethanolamine, stirring for 15 minutes to obtain a mixture, and adding the mixture into a material cylinder A of the filling machine. Wherein the weight ratio of the first main material to the front-stage catalyst to the rear-stage catalyst is 100:1.2: 0.25; the first main material comprises biological oil, polyester polyol, polyether polyol and hardener diethylene glycol in a weight ratio of 60:20:18: 2.
The steel mould is fixed on a u-shaped assembly line, the U-shaped assembly line is heated to 45 ℃ by an oven, the mould is opened, and the pouring is carried out by a pouring machine, wherein the weight ratio of the first main material to the second main material is 100: 70.
and opening the die to take materials after the die is closed for 6 minutes by an oven to obtain the shock-absorbing material.
Example 3
This embodiment provides a shock absorbing material, and the manufacturing method thereof includes the following steps:
polyether diol, polyether triol and isocyanate in the weight ratio of 40:10:50 are reacted at 80 deg.c to obtain modified isocyanate matter. Heating the modified isocyanate substance at 50 ℃ for 60min, adding the heated modified isocyanate substance into a material cylinder B of a filling machine, and heating the material cylinder B to 50 ℃.
Adding the front-stage catalyst of solid amine, then the rear-stage catalyst of diethanolamine and triethanolamine into the first main material, stirring for 15 minutes to obtain a mixture, and adding the mixture into a material cylinder A of a filling machine. Wherein the weight ratio of the first main material to the front-stage catalyst to the rear-stage catalyst is 100:1.1: 0.3; the first main material comprises bio-oil, polyester polyol, polyether polyol and hardener diethylene glycol in a weight ratio of 60:32.5:5: 2.5.
The steel mould is fixed on a u-shaped assembly line, the U-shaped assembly line is heated to 45 ℃ by an oven, the mould is opened, and the pouring is carried out by a pouring machine, wherein the weight ratio of the first main material to the second main material is 100: 72.
and opening the die to take materials after the die is closed for 6 minutes by an oven to obtain the shock-absorbing material.
Test examples
(1) Hardness: the hardness of the shock absorbing material of example 1 was measured with reference to GB/T3903.4-2017 (shoe all-shoe test method hardness), and the results are recorded in table 1.
(2) Density: the density of the shock-absorbing material of the example was measured with reference to the first method in GB/T533-2008 (measurement of the density of vulcanized rubber or thermoplastic rubber), and the results thereof are reported in Table 1.
(3) Rebound resilience: the rebound resilience of the shock absorbing material of example 1 was measured with reference to GB/T1681-2009 (measurement of rebound resilience of vulcanized rubber), and the results are reported in table 1.
(4) Compression set property: the compression deformation rate of the shock-absorbing material of example 1 was measured at 23 ℃ for 72 hours with reference to HG/T2876-2009 (rubber shoe microcellular material compression deformation test method), and the results are reported in table 1.
TABLE 1 Performance test results of the shock-absorbing material of example 1
As can be seen from the results in table 1, the shock absorbing material prepared in the embodiment of the present application has a rebound rate of less than 10%, and a compression deformation rate of less than 20%, and has both good elasticity and shock absorbing effect.
The embodiments described above are some, but not all embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Claims (5)
1. A method of making a shock absorbing material, comprising:
reacting the first main material with the second main material at the temperature of 45-50 ℃; wherein the weight ratio of the first main material to the second main material is 100: 68-72; the step of reacting the first main material with the second main material at the temperature of 45-50 ℃ comprises the following steps: mixing the first main material with a catalyst to obtain a mixed material, and mixing the mixed material with the second main material to react at the temperature of 45-50 ℃; the catalyst comprises a front-stage catalyst and a rear-stage catalyst, and the front-stage catalyst is solid amine; the rear-stage catalyst comprises at least one of diethanolamine and triethanolamine; the weight ratio of the first main material to the front-stage catalyst to the rear-stage catalyst is 100:1.1-1.3: 0.2-0.3;
The first main material comprises 55-65:20-35:3-20:2-3 weight ratio of bio-oil, polyester polyol, polyether polyol and hardener, and the second main material is modified isocyanate substances; the hardener is selected from diethylene glycol; the biological oil plays a role in foaming;
the preparation method of the second main material comprises the following steps:
polyether diol, polyether triol and isocyanate are reacted at 75-80 deg.c.
2. The method for preparing an impact absorbing material according to claim 1, wherein the modified isocyanate-based substance contains 22.8 to 23.2 wt% of NCO groups.
3. The method for preparing an impact absorbing material according to claim 1, wherein the weight ratio of the polyether diol, the polyether triol and the isocyanate is 38-42:8-12: 48-52.
4. A method for preparing a shock absorbing material as defined in any one of claims 1 to 3, wherein the hydroxyl value of said polyester polyol is 110-115 mgKOH/g.
5. A shock absorbing material produced by the method of producing a shock absorbing material according to any one of claims 1 to 4, wherein the shock absorbing material has a rebound of less than 10% and a compression set of less than 20%.
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| CN103483530A (en) * | 2013-09-06 | 2014-01-01 | 旭川化学（昆山）有限公司 | Polyether urethane shoe sole raw liquorbasic solution |
| CN103897134A (en) * | 2014-01-20 | 2014-07-02 | 佛山林至高分子材料科技有限公司 | Exercise-protective buffering and damping material with high buffering performance |
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