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Adhesive of polyurethane of ability in swimming is common sort and industry appl

From;  Author:Stand originally

1, the environment is friendly model adhesive and adhesive of polyurethane of ability in swimming

As the progress of science and technology, and the requirement hasten of legal laws and regulations is severe related environmental protection, the environment is friendly model the research and development of adhesive suffers increasingly take seriously. The environment is friendly model basically have the depth adhesive and without solvent adhesive two kinds. Call heat frit adhesive commonly without solvent adhesive, for 100% by thermoplastic colophony composition, do not contain any moisture or dissolvent, can flow below melt condition, have felt property after refrigeration, can go to the lavatory use at automation to produce a course, offer tall productivity, and do not produce any environmental pollution, incorrect mankind causes harm. Still have in addition lacteal / dispersive adhesive, reaction adhesive and natural polymeric adhesive.

The environment is friendly model stick rubber overshoes kind adhesive is opposite besides the requirement of shoe material stick receive have firm sex, endurance and plasticity besides, still must want to have environmental protection sex, provide compatibility character to different capable person, the quality that with ensuring the shoe tastes.

The environment is friendly model polyurethane sticks rubber overshoes kind adhesive basically has without solvent reaction polyurethane heats up frit glue and polyurethane of ability in swimming glue two kinds.

A, without solvent reaction polyurethane heats up frit glue

To be being stuck as a result of glue of common contact hot frit material pledges exterior wellability is differred, already was confirmed the agglutinate that cannot apply to outsole generally, accordingly, people develops glue of reaction hot frit, the course is the nearest 10 old effort, already developed low viscosity and the product that can use below appropriate temperature condition now. Portion of water of have the aid of of glue of reaction hot frit or hot action undertake cross-linking, achieve better adhesive strength finally. Use without solvent reaction polyurethane hot frit glue wants form a complete set special gelatinize equipment, operation craft requirement is stricter, accordingly, promotion application has certain difficulty. Abroad already had shoe factory to heat up sole of frit glue agglutinate in batch application polyurethane, there also is research unit to develop this kind of adhesive in our country, see adhesive strength from the report not quite tall, still be in lab phase.

Polyurethane of B, ability in swimming glue

Glue does not contain polyurethane of ability in swimming NCO radical is round, and contain carboxyl, hydroxyl to wait base round, below appropriate condition, it is for example when existence of ester of cyanic acid of different of ability in swimming, can make the element of adhesive produces cross-linking reaction. Polyurethane of most ability in swimming glue is to rely on the polar group inside the element to produce cohesive force and conglutinate force to undertake solidify. Polyurethane of ability in swimming has polar group, the ester that be like ammonia be good at, niao key, electrovalent bond, accordingly, become material to a lot of adding up to, especially polarity material, porous material all is had stick goodly receive a gender.