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Two-component polysiloxane stripping adhesive

A polysiloxane, two-component technology, applied in the field of release adhesives, can solve problems such as fire, film-type release adhesives do not have flow, adhesion performance, poisoning, etc.

Active Publication Date: 2011-04-20
SYST EQUIP CO LTD OF THE 28TH RES INST LI YANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Among the many types of silicone release adhesives, although silicone oil release adhesives have excellent release performance, part of the silicone oil will migrate to the surface of the product after demoulding, affecting the progress of the next process; among other release adhesives, the mixed solution type release adhesive Molding rubber has the risk of fire and poisoning. Film-type release adhesives do not have flow and adhesion properties, while ointment-type release adhesives have problems such as poor flow, high dosage, low reuse rate, and stained products.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Component A: Take 100 parts by weight of 107# silicone rubber and 100 parts by weight of silicon dioxide, mix them well and fill them into tanks;

[0021] Component B: Take 40 parts by weight of ethyl orthosilicate and 10 parts by weight of dibutyltin dilaurate, mix them well and fill them into a tank;

[0022] Use: Take 30 parts by weight of component A and 1 part by weight of component B, mix thoroughly and evenly, and use immediately.

Embodiment 2

[0024] Component A: Take 80 parts by weight of 106# silicone rubber and 100 parts by weight of silicon dioxide, mix them well and fill them into tanks;

[0025] Component B: Take 50 parts by weight of ethyl orthosilicate and 8 parts by weight of dibutyltin dilaurate, mix them well and fill them into a tank;

[0026] Usage: Take 25 parts by weight of component A and 1 part by weight of component B, mix thoroughly and evenly, and then use immediately.

Embodiment 3

[0028] Component A: Take 120 parts by weight of 107# silicone rubber and 80 parts by weight of silicon dioxide, mix them well and fill them into tanks;

[0029] Component B: Take 30 parts by weight of ethyl orthosilicate and 12 parts by weight of dibutyltin dilaurate, mix them well and fill them into a tank;

[0030] Use: Take 30 parts by weight of component A and 1 part by weight of component B, mix thoroughly and evenly, and use immediately.

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PUM

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Abstract

The invention discloses a two-component polysiloxane stripping adhesive for the protection of non-adhesion positions of sandwich composite panels of van vehicles, which comprises an A component and a B component, wherein the A component is formed by mixing a basic adhesive and a filler, the basic adhesive is 80 to 120 weight portions of hydroxyl-terminated dimethyl silicone polymer, and the filler is 80 to 120 weight portions of silicon dioxide; the B component is formed by mixing a cross-linking agent and a curing accelerator, the cross-linking agent is 30 to 50 weight portions of ethyl orthosilicate, and the curing accelerator is 8 to 12 weight portions of dibutyl tin laurate; and the ratio of the A component to the B component (weight portion) is equal to 30:1. The product has the advantages of small surface tension, good stripping property for most of organic polymer materials, good heat resistance and chemical stability, and no chemical reactions with contacted materials.

Description

technical field [0001] The invention relates to a release adhesive, in particular to a polysiloxane release adhesive used for the protection of non-adhesive parts of sandwich composite panels of van vehicles. Background technique [0002] There are many kinds of release adhesives, currently mainly include: silicone release adhesives, including dimethyl silicone oil, methyl phenyl silicone oil, diethyl silicone oil, emulsified silicone oil, methyl vinyl silicone rubber, methyl block greenhouse vulcanized silicon Rubber, methyl silicone resin; other release adhesives mainly include mixed solution type, film type and ointment type. The mixed solution type is mainly polyvinyl alcohol solution, polyacrylamide solution, cellulose acetate solution, polystyrene and other organic solvent solutions; the film type is mainly polyester film, polyvinyl alcohol film, polyethylene film, fluoroplastic film, cellophane , cellulose acetate film, tin foil, gold paper, etc.; the ointment type i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C33/64
Inventor 石小富周玲
Owner SYST EQUIP CO LTD OF THE 28TH RES INST LI YANG