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Dealcoholization type double-component silica gel and preparation method thereof

A two-component, silicone gel technology, applied in the direction of adhesives, polymer adhesive additives, non-polymer adhesive additives, etc., can solve the limitations of product applications, adhesion, durability, sealing, storage Insufficient stability, deep curing, etc., to achieve the effect of simple operation and mild conditions

Active Publication Date: 2019-03-15
HANGZHOU ZHIJIANG NEW MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the dealcoholized two-component silicone gel in the prior art still has certain properties such as adhesion, durability, sealing, storage stability, and deep curing, which limit the further application of the product

Method used

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  • Dealcoholization type double-component silica gel and preparation method thereof
  • Dealcoholization type double-component silica gel and preparation method thereof
  • Dealcoholization type double-component silica gel and preparation method thereof

Examples

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preparation example Construction

[0088] The present invention also provides a method for preparing the dealcoholized two-component silica gel described in the above technical solution, comprising the following steps:

[0089] a) Mix polydimethylsiloxane, hardness modifier, crosslinking agent and tackifier uniformly to obtain component A;

[0090] b) Mix component B with component A obtained in step a) to obtain dealcoholized two-component silica gel.

[0091] In the present invention, polydimethylsiloxane, hardness regulator, crosslinking agent and tackifier are firstly mixed uniformly to obtain component A. In the present invention, the polydimethylsiloxane, hardness regulator, crosslinking agent and tackifier are the same as those described in the above technical solution, and will not be repeated here.

[0092] The present invention has no special limitation on the mixing method, and the technical solution of manual stirring or mechanical stirring well known to those skilled in the art can be used. The p...

Embodiment 1

[0100] (1) A component: set the kinematic viscosity to 2000mm 2 / s of α, ω-dihydroxy polydimethylsiloxane 100 parts by weight, methyltrimethoxysilane 1.17 parts by weight and tackifier (by molar ratio of 1:2:1 aminopropyltrimethoxy Silane, γ-glycidyl ether oxypropyltrimethoxysilane and isocyanatopropyltrimethoxysilane were mixed and reacted at 50°C for 45h) 0.01 parts by weight and stirred until uniform to obtain dealcoholized two-component silicon A component of the gel.

[0101] (2) B component: use n-butyl titanate as the B component of the dealcoholized two-component silicone gel.

[0102] (3) Inject the above components A and B into a 100mL plastic cup at a mass ratio of 60:0.09 and mix evenly to obtain a dealcoholized two-component silicone gel.

Embodiment 2

[0104] (1) A component: set the kinematic viscosity to 2000mm 2 95 parts by weight of α,ω-dihydroxypolydimethylsiloxane / s and a kinematic viscosity of 300mm 2 / s of α, ω-dihydroxy polydimethylsiloxane 5 parts by weight, 1.0 parts by weight of 1,6-bis(trimethoxysilyl) hexane and tackifier (by molar ratio of 1:2: 1 aminopropyltrimethoxysilane, γ-glycidyl etheroxypropyltrimethoxysilane and isocyanatopropyltrimethoxysilane were mixed and then reacted at 50°C for 45h) 0.01 parts by weight were stirred until uniform, The A component of the dealcoholized two-component silicone gel was obtained.

[0105] (2) B component: use n-butyl titanate as the B component of the dealcoholized two-component silicone gel.

[0106] (3) Inject the above components A and B into a 100mL plastic cup at a mass ratio of 60:0.09 and mix evenly to obtain a dealcoholized two-component silicone gel.

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Abstract

The invention provides a dealcoholization type double-component silica gel. The dealcoholization type double-component silica gel comprises a component A and a component B at the mass ratio of 100:(0.01-2); the component A comprises 100 parts by weight of polydimethylsiloxane, 0-10 parts by weight of a hardness regulator, 0.3-12 parts by weight of a crosslinking agent, and 0.01-0.5 parts by weightof a tackifier; the component B comprises 0.01-2 parts by weight of a catalyst; the crosslinking agent is chosen from an organosilicon compound with a general formula as shown in a formula (I), a lowpolymer of the organosilicon compound with the general formula as shown in the formula (I), or an organosilicon compound as shown in a formula (II), R1, R2, R3, R4, R6 and R7 in the formula are independently chosen from monovalent hydrocarbon radical; R5 is bivalent hydrocarbon radical, the number of carbon atoms of the bivalent hydrocarbon radical is 2-20; a is equal to 0 or 1, b is equal to 0 or 1, and c is equal to 0 or 1. The dealcoholization type double-component silica gel uses the components at the specific contents, the relatively good interaction is achieved; the adhesive property, the durability, the airtightness and the long-term storage stability of a product are excellent at the same time; and the deep solidifying performance is excellent.

Description

technical field [0001] The invention relates to the technical field of organosilicon room temperature vulcanizing silicone gel, and more specifically relates to a dealcoholized two-component silicone gel and a preparation method thereof. Background technique [0002] The gel used in coating materials, potting materials and sealing materials is a very soft special material formed by curing. It is required that the material not only has good adhesion to the substrate material but also other materials that make up the components. Water resistance, impact resistance and absorbency. Gel is generally widely used on sensitive electronic circuit components in electronic appliances, for moisture-proof, shock absorption, insulation coating, etc. of electronic components; such as precision electronic components, backlight, solar energy, connectors, electrical modules, Waterproof, moisture-proof, gas pollution-proof coating, pouring and potting protection of discrete devices and integr...

Claims

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Application Information

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IPC IPC(8): C09J183/04C09J11/06C09J11/08
CPCC08L2205/025C09J11/06C09J11/08C09J183/04C08L83/04C08K5/544C08K5/5435
Inventor 张原志成陈丹陶小乐何永富俞云赵超超
Owner HANGZHOU ZHIJIANG NEW MATERIAL CO LTD
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