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Chloroprene rubber adhesive agent and preparation method thereof

A technology of adhesives and neoprene, applied in the direction of adhesives, adhesive types, grafted polymer adhesives, etc., can solve the problems of affecting the appearance of shoes, aging and yellowing quickly, etc., and achieve easy control and simple production process , the effect of high bonding strength

Inactive Publication Date: 2013-04-17
CHENGDU SHENGERJIA SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a neoprene adhesive and Its preparation method, the neoprene adhesive of the present invention has dual functions of coating and bonding, and is resistant to aging and yellowing, and has low toxicity. At the same time, the production process is simple and the operation is convenient

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: 20g neoprene rubber A-90 (Nichiden Kawasaki, polymerization grade), 3g titanium dioxide, 1.5g light calcium carbonate, 1.0g zinc oxide, 1.4g magnesium oxide, 0.05g aluminate coupling agent After mixing evenly, put it into a 250ml three-necked bottle equipped with an electric stirrer, a reflux condenser, and a thermometer, then add 104g of solvent (ethyl acetate:toluene:120# gasoline=25:30:45), and stir at 70°C. Sol until the chloroprene rubber is completely dissolved, add 4.0g methyl methacrylate and 0.20g benzoyl peroxide at 85°C, react for 4 hours, add 0.11g hydroquinone, 0.12g antioxidant 2·6-di tert-butyl-p-cresol, 4.0g tert-butylphenol-formaldehyde resin, after dissolving completely, stop stirring and discharge. The bonding strength of the obtained adhesive to materials: PVC leather to adhesion: 3.21 N / mm, PU leather to adhesion: 3.40 N / mm, PVC leather to PU leather: 3.09 N / mm.

Embodiment 2

[0019] Embodiment 2: 20g chloroprene rubber A-90, 3g titanium dioxide, 1.5g light calcium carbonate, 1.0g zinc oxide, 1.5g magnesium oxide, 0.05g aluminate coupling agent are mixed evenly and then dropped into with stirring, In the three-necked bottle with condensation and temperature control, add 130g solvent (ethyl acetate:cyclohexane:120# gasoline=50:20:30), stir the sol at 80°C, add 4.2g methacrylic acid at 80°C Methyl ester and 0.14g benzoyl peroxide, react for 4 hours, add 0.12g hydroquinone, 0.10g2·6-di-tert-butyl p-cresol, 3.0g tert-butylphenol-formaldehyde resin, after the dissolution is complete, stop Stir and discharge. The bonding strength of the obtained adhesive to materials: PVC leather to adhesion: 3.10 N / mm, PU leather to adhesion: 3.30 N / mm, PVC leather to PU leather: 3.05 N / mm.

Embodiment 3～5

[0020] Embodiment 3~5: preparation method, condition are the same as embodiment 1, change the addition amount of methyl methacrylate, coupling agent and filler, the result is as shown in table 1.

[0021] Group (g) parts Methyl methacrylate Titanium dioxide light calcium carbonate Zinc oxide magnesium oxide Aluminate coupling agent Adhesion to PVC leather (N / mm) PU leather to stick (N / mm) PVC leather ~ PU leather (N / mm) Example 3 5 4 1 1 1.6 0.06 3.01 3.20 3.07 Example 4 4.6 3.5 1.6 0.6 1.8 0.04 3.30 3.08 3.03 Example 5 4.9 2 2 1.2 2 0.03 3.02 3.04 3.22

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PUM

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Abstract

The invention discloses a chloroprene rubber adhesive agent and a preparation method thereof, aiming at solving the problem that the attractive appearance of the shoes is affected because the existing synthetic material always becomes aged and yellow rapidly. The chloroprene rubber adhesive agent provided by the invention comprises chloroprene rubber, a solvent and an additive, wherein the additive consists of the following components based on the weight percentage of the chloroprene rubber: 10-20% of titanium dioxide, 5-10% of light calcium carbonate, 3-6% of zinc oxide, 7-10% of magnesium oxide, 0.15-0.3% of aluminate coupling agent, 20-25% of methyl methacrylate, 0.7-1.0% of benzoyl peroxide, 0.4-0.6% of hydroquinone, 0.4-0.7% of 2,6-di-tert butyl p-cresol and 15-20% of tert butyl phenolic resin; and the weight ratio of the chloroprene rubber to the solvent is 1: (5.2-6.5). The chloroprene rubber adhesive agent disclosed by the invention has double functions of coating and binding, and is resistant to become aged and yellow.

Description

technical field [0001] The invention relates, in particular, to a neoprene adhesive and a preparation method thereof. Background technique [0002] Adhesives used for bonding polyvinyl chloride (PVC) artificial leather, polyurethane (PU) synthetic leather, genuine leather, TPR substrates and EVA foam materials are mainly bonded by neoprene rubber and methyl methacrylate (MMA). branches obtained by copolymerization. [0003] People such as Li Kenong, Shao Guangda (Journal of Chengdu University of Science and Technology, 1982, 4: 13~22) disclose a kind of CAF type leather finishing agent, it is a kind of latex that is carried out copolymerization by chloroprene monomer and acrylate, not With covering and bonding functions. [0004] Wenzi Yitian et al. (polymerization reaction of acrylic acid in the presence of chloroprene rubber, Chemical Industry (Osaka), 1966, 40 (2): 574~582) disclosed mainly azobisisobutyronitrile, lauroyl peroxide and Study on the influence of the addi...

Claims

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Application Information

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IPC IPC(8): C09J151/04C09J161/06C08F279/02
Inventor 张荣斌
Owner CHENGDU SHENGERJIA SCI & TECH
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