Shoe cellulose powder modified polyurethane adhesive and preparation method thereof

A polyurethane adhesive, powder modification technology, applied in polyurea/polyurethane adhesive, adhesive, adhesive type, etc. Resistance to plasticizer penetration and other problems, to achieve the effect of improving fastness and hydrolysis resistance, good hydrolysis resistance, and improving initial tack

Inactive Publication Date: 2016-09-07
LI NING CHINA SPORTS GOODS +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, about 95% of shoe glues on the market use chloroprene adhesives, and the amount of polyurethane is less. Neoprene adhesives have the advantages of good initial adhesion, cold bonding, and low price, but they are not resistant to plasticizer penetration. , thermoplastic rubber, PU leather and other new shoe materials have poor adhesion. In addition, benzene solvents must be used, which will cause great harm to the environment and human body. It is no longer suitable for the development of the shoe industry. Polyurethane shoe glue has excellent elasticity, Softness and flex resistance are recognized by the footwear industry. For example, the Desmocoll series products of German Bayer Company and the Pearlstick series products of Spanish Merquinsa Company are widely used in the market, but its high temperature aging resistance and hydrolysis resistance are difficult to achieve. Requirements, but also the development bottleneck of the shoe industry

Method used

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  • Shoe cellulose powder modified polyurethane adhesive and preparation method thereof
  • Shoe cellulose powder modified polyurethane adhesive and preparation method thereof
  • Shoe cellulose powder modified polyurethane adhesive and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Embodiment 1, preparation of cellulose powder modified polyurethane adhesive for shoes

[0039] (1) 120 mass parts of diphenylmethane diisocyanate, 5 mass parts of hemp stalk core powder (particle size is 20 microns), 60 mass parts of 1,4-butanediol-adipic acid copolymerized binary Add alcohol (molecular weight: 1500) and 330 parts by mass of 1,4-butanediol-1,6-hexanediol-adipic acid copolymerized glycol (molecular weight: 2000) into the reactor, and heat up to 85°C for polymerization 1 hour; then, 30 parts by mass of isophorone diisocyanate was added to the reaction system, and a prepolymerization reaction was carried out at 90° C. for 3 hours to obtain a prepolymer.

[0040] (2) Add 10.5 parts by mass of neopentyl glycol and 20 parts by mass of 1,4 butanediol as a chain extender to the prepolymer obtained in the upper step, and carry out a chain extension reaction at 50°C. After 4 hours of reaction, the reaction The viscosity and temperature of the system are no long...

Embodiment 2

[0042] Embodiment 2, performance test of cellulose powder modified polyurethane adhesive for shoes

[0043] One, the performance test of the cellulose powder modified polyurethane adhesive for shoes prepared in Example 1

[0044] Prepare the composite shoe sole with the modified polyurethane adhesive prepared in Example 1: use the modified polyurethane adhesive to bond the rubber outsole and the midsole. Among them, the composite shoe sole is made of short fiber (addition amount not less than 3%) modified rubber (natural rubber, butadiene rubber content is not less than 55%) outsole, hemp stalk core ultrafine powder (addition amount is not less than 3%) Modified EVA foaming injection molded midsole and thermoplastic polyurethane injection molded foot arch support frame are made by bonding hemp stalk core superfine powder modified polyurethane glue.

[0045] The performance test results of the composite shoe sole prepared above are shown in Table 1.

[0046] Table 1 Performan...

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PUM

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Abstract

The invention discloses a shoe cellulose powder modified polyurethane adhesive and a preparation method thereof. The shoe cellulose powder modified polyurethane adhesive is prepared from the following components in parts by mass: 150 to 200 parts of diphenylmethane diisocyanate, 20 to 50 parts of isophorone diisocyanate, 200 to 400 parts of polyester glycol, 30 to 60 parts of chain extender, 1 to 10 parts of cellulose powder, and 2000 to 4000 parts of solvent. The preparation method has the advantages that under the synergistic action of two types of active isocyanate, by adopting different types of hydroxyl raw materials, the initial viscosity, hydrolysis resistance, wet and heat aging resistance and the like of products are improved; the technology implementing is good, and the environment-friendly and non-pollution effects are realized.

Description

technical field [0001] The invention relates to an adhesive for shoes and a preparation method thereof, in particular to a cellulose powder modified polyurethane adhesive for shoes and a preparation method thereof. Background technique [0002] At present, about 95% of shoe glues on the market use chloroprene adhesives, and the amount of polyurethane is less. Neoprene adhesives have the advantages of good initial adhesion, cold bonding, and low price, but they are not resistant to plasticizer penetration. , thermoplastic rubber, PU leather and other new shoe materials have poor adhesion. In addition, benzene solvents must be used, which will cause great harm to the environment and human body. It is no longer suitable for the development of the shoe industry. Polyurethane shoe glue has excellent elasticity, Softness and flex resistance are recognized by the footwear industry. For example, the Desmocoll series products of German Bayer Company and the Pearlstick series products...

Claims

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Application Information

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IPC IPC(8): C09J175/04C08G18/76C08G18/75C08G18/66C08G18/64C08G18/42C08G18/12C08G18/32
CPCC09J175/04C08G18/12C08G18/4081C08G18/4202C08G18/4238C08G18/6484C08G18/755C08G18/7671C08G2170/90C08G18/3206
Inventor 郝新敏赵鹏程黄杰甘舸鞠景堂唐丽陈晓何灿玉
Owner LI NING CHINA SPORTS GOODS
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