A kind of preparation method of water-based eva surface treatment agent

A surface treatment agent, water-based technology, applied in the field of preparation of water-based surface treatment agents, can solve the problems of high cost of hydroxyl-terminated polyolefins, health effects of operators, and environmental pollution, etc., to achieve good affinity and significant adhesion promotion Function, environment-friendly effect

Inactive Publication Date: 2016-02-10
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Zhang Yongqing developed an EVA surface treatment agent formulated with a graft copolymer solution of methyl methacrylate and acrylic acid and styrene-butadiene rubber to promote the adhesion of EVA soles [Journal of Huaqiao University (Natural Science Edition) 2000, 21 (4 ) 432-434], the toluene and other solvents in it will pollute the environment due to their volatility during use, and have a certain impact on the health of operators, and even cause fires
[CN102863607A] such as Zhang Anhong adopts hydroxyl-terminated polyolefin, dimethylol carboxylic acid, aliphatic diisocyanate, etc. to prepare water-based EVA material surface treatment agent, but the cost of hydroxyl-terminated polyolefin is high, and the toxicity of aliphatic diisocyanate is stronger

Method used

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  • A kind of preparation method of water-based eva surface treatment agent

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Experimental program
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Effect test

Embodiment 1

[0021] Add 400 grams of toluene and 200 grams of ethyl acetate into a reaction flask equipped with a thermometer, a nitrogen device, a mechanical stirring device, a vacuum device and a reflux device, then drop into 100 grams of chlorinated polypropylene, stir, and control the temperature at 60 ℃. After the chlorinated polypropylene is completely dissolved, fill the reaction flask with nitrogen, add 10 grams of methyl methacrylate and 10 grams of acrylic acid, and add 1.8 grams of benzoyl peroxide and 10 grams of acetic acid dropwise after heating up to 75°C A mixed solution of vinyl esters was polymerized; after 3 hours of polymerization, the nitrogen gas was turned off, the temperature was lowered to 50°C, and 50% of the solvent in the system was removed by distillation under reduced pressure, and then 10wt% triethylamine aqueous solution was added until the pH value of the system was 6.5, and the reaction 0.5 hours; gradually add 800 grams of deionized water at 50°C under hi...

Embodiment 2

[0023] 420 gram toluene, 220 gram ethyl acetate are added in the reaction flask that has thermometer, nitrogen device, mechanical stirring device, vacuumizing device and reflux device, then drop into 100 gram chlorinated polypropylene, stir, control temperature is 62 ℃. After the chlorinated polypropylene is completely dissolved, fill the reaction flask with nitrogen, add 15 grams of methyl methacrylate and 15 grams of methacrylic acid, and add 1.9 grams of benzoyl peroxide and 15 grams of methacrylic acid dropwise after heating up to 76 ° C. The mixed solution of gram vinyl acetate carries out polymerization reaction; After 3.5 hours of polymerization reaction, turn off the nitrogen gas, cool to 51 ℃, then remove 55% of the solvent in the system by distillation under reduced pressure, then add 10wt% dimethylaminoethanol aqueous solution to the pH value of the system 7. React for 40 minutes; gradually add 850 grams of deionized water at 51°C under high-speed stirring, and fina...

Embodiment 3

[0025] Add 450 grams of toluene and 250 grams of ethyl acetate into a reaction flask equipped with a thermometer, a nitrogen device, a mechanical stirring device, a vacuum device and a reflux device, then drop into 100 grams of chlorinated polypropylene, stir, and control the temperature at 65 ℃. After the chlorinated polypropylene is completely dissolved, fill the reaction flask with nitrogen, add 20 grams of methyl methacrylate and 20 grams of acrylic acid, and add 2.0 grams of benzoyl peroxide and 20 grams of acetic acid dropwise after heating up to 78°C A mixed solution of vinyl esters was polymerized; after 4 hours of polymerization, the nitrogen gas was turned off, the temperature was lowered to 52°C, and 60% of the solvent in the system was removed by distillation under reduced pressure, and then 10wt% triethylamine aqueous solution was added until the pH value of the system was 7.5, and the reaction 50 minutes; under high-speed stirring, gradually add 900 grams of deio...

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Abstract

The invention relates to a method for preparing a water-based EVA (ethylene vinyl-acetate copolymer) surface treating agent. The method comprises steps of adding methylbenzene, ethyl acetate and chlorinated polypropylene into a reaction kettle and stirring, wherein the temperature is controlled to be at 60-80 DEG C; then adding methyl methacrylate and crylic acid monomer, raising temperature up to 75-85 DEG C, dropwise adding a vinyl acetate solution of benzoyl peroxide, polymerizing for 3-5 hours so as to obtain a chlorinated polypropylene grafted liquid; distilling at reduced pressure at 50-60 DEG C to remove 50-80% of solvent, adding a neutralizer till the pH value of the system is 6.5-8.5, reacting for 0.5-1 hour; and gradually adding deionized water while stirring at a high speed, finally, adding polyvinylpyrrolidone, stirring uniformly so as to obtain the water-based EVA material surface treating agent. The EVA material surface treating agent prepared by the method not only can obviously promote bonding of the EVA material, but also is environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a preparation method of a surface treatment agent, in particular to a preparation method of a water-based surface treatment agent for improving the bonding strength of EVA materials. Background technique [0002] EVA (ethylene-vinyl acetate copolymer) foam material is widely used in sole materials, especially the soles of travel shoes, due to its good elasticity, light weight, strong air permeability, easy processing, easy coloring, non-slip, and low cost. However, the polarity of EVA is weak, and the affinity between neoprene adhesives and polyurethane adhesives with strong polarity is poor, so surface treatment is required. The surface treatment agent can be regarded as a bridging agent between the adhered material and the adhesive. Its function is to remove the dirt, oil, and processing aids on the surface of the adherend; Layer a new surface layer to change the surfa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L51/06C08L39/06C08F255/02C08F220/14C08F220/06C08F218/08C08J7/00
Inventor 聂秋林
Owner HANGZHOU DIANZI UNIV
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