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Addition type silk-screen silica gel and preparation method thereof

An addition-type, silica gel technology, applied in the direction of adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve problems such as large fiber gaps, difficult bonding, and poor adhesion on the surface of the substrate to increase bonding Strength, easy construction and operation, and the effect of increasing thixotropy

Pending Publication Date: 2021-09-24
惠州市永卓科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, it is well known that silicone rubber has a natural release property and poor adhesion to the surface of the substrate, especially for smooth surfaces
For cotton fabric, because the surface is rough, the fiber gap is large, and the silicone rubber has good permeability, so it has good adhesion to cotton fabric, but for polyester (polyester fiber) woven fabric, nylon (polyamide fiber) ) and other smooth and tight fabrics, it is very difficult to bond

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Component A: 123.5 parts of base rubber, 100 parts of second vinyl silicone oil, 137 parts of hydrogen-containing silicone oil, 21 parts of tackifier, 15 parts of acetylenic alcohol; Component B: 10 parts of castor catalyst, third vinyl silicone oil 100 parts of silicone oil.

[0037] Wherein, the mass ratio of component A and component B is 10:1.

[0038] Wherein, the viscosity of the tackifier is 2000 mPa·s, and the hydroxyl group content in the tackifier is 6%.

[0039] Among them, the tackifier includes γ-glycidyl etheroxypropyl trimethoxysilane (KH560), hydroxyl-terminated vinyl silicone oil and butyl titanate. The use of coupling agent as the adhesion promoter of the silica gel system can increase the bonding strength of the silica gel system, making the silica gel have good adhesion to nylon, polyester and other fabrics with smooth surfaces.

[0040] Further, in the tackifier, calculated in parts by weight, the content of the above-mentioned components is: 10 p...

Embodiment 2

[0058]Component A: 108.5 parts of base rubber, 90 parts of the second vinyl silicone oil, 130 parts of hydrogen-containing silicone oil, 20 parts of tackifier, 10 parts of acetylenic alcohol; Component B: 5 parts of castor catalyst, the third vinyl 90 parts of silicone oil.

[0059] Wherein, the mass ratio of component A and component B is 50:1.

[0060] Wherein, the viscosity of the tackifier is 2500 mPa·s, and the hydroxyl content of the tackifier is 8%.

[0061] Wherein, in the tackifier, calculated in parts by weight, the content of the above components is: 8 parts of γ-glycidyloxypropyltrimethoxysilane, 8 parts of vinyl silicone oil terminated by hydroxyl groups, and 4 parts of butyl titanate.

[0062] Wherein, in the base rubber material, calculated according to parts by weight, the content of the above components is: 90 parts of the first vinyl silicone oil, 10 parts of reinforcing filler, 0.5 parts of hexamethyldisilazane, and 8 parts of water.

[0063] Wherein, the ...

Embodiment 3

[0068] Component A: 140 parts of base rubber, 110 parts of second vinyl silicone oil, 140 parts of hydrogen-containing silicone oil, 25 parts of tackifier, 20 parts of acetylenic alcohol; Component B: 15 parts of castor catalyst, third vinyl silicone oil 110 parts of silicone oil.

[0069] Wherein, the mass ratio of component A and component B is 100:1.

[0070] Wherein, the viscosity of the tackifier is 3000 mPa·s, and the hydroxyl content of the tackifier is 10%.

[0071] Wherein, in the tackifier, calculated in parts by weight, the content of the above-mentioned components is: 10 parts of γ-glycidyloxypropyltrimethoxysilane, 10 parts of hydroxyl-terminated vinyl silicone oil, and 5 parts of butyl titanate.

[0072] Wherein, in the base rubber material, calculated according to parts by weight, the content of the above components is: 110 parts of the first vinyl silicone oil, 15 parts of reinforcing filler, 3 parts of hexamethyldisilazane, and 12 parts of water.

[0073] Wh...

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Abstract

The invention relates to a silicone rubber product, in particular to addition type silk-screen silica gel and a preparation method thereof. The silica gel comprises a component A and a component B. The component A comprises, by weight, first vinyl silicone oil, reinforcing filler, hexamethyldisilazane, water, second vinyl silicone oil, hydrogen-containing silicone oil, a tackifier and alkynol; and the component B comprises a Karst catalyst and third vinyl silicone oil. The tackifier greatly increases the cohesiveness of a silica gel system, so the silica gel has good cohesiveness to nylon, polyester and other fabrics with smooth and compact surfaces; the reinforcing filler enables the silica gel system to have good fluidity, so the situation that the thixotropy of the silica gel system is reduced due to the addition of the tackifier is avoided, and construction operation is facilitated.

Description

technical field [0001] The invention relates to silicone rubber products, in particular to an addition-type silk screen printing silica gel and a preparation method thereof. Background technique [0002] Addition-type liquid silicone rubber is widely used in clothing signs, printing, anti-slip coating, etc. Addition-type liquid silicone rubber has the characteristics of non-toxic, odorless, green and environmental protection, and can be mixed with various pigments to make bright colors. Patterns can also be used in color screen printing to produce beautiful landscapes and flowers, with an oil painting-like texture. These excellent qualities are more and more widely admired and sought after by people. [0003] However, it is well known that silicone rubber has natural release properties and poor adhesion to substrate surfaces, especially for smooth surfaces. For cotton fabric, because the surface is rough, the fiber gap is large, and the silicone rubber has good permeability...

Claims

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Application Information

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IPC IPC(8): C09J183/07C09J183/05C09J183/04C09J11/04C09J11/06
CPCC09J183/04C09J11/04C09J11/06C08L83/04C08K7/26C08K5/5435
Inventor 王细平
Owner 惠州市永卓科技有限公司
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