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A kind of instantaneous high temperature resistant flexible adhesive and its preparation method

A high-temperature flexible and adhesive technology, applied in the direction of adhesives, adhesive additives, polymer adhesive additives, etc., can solve the problems of organic silicone adhesive bubbles, macula, and inability to meet more stringent use requirements, and achieve anti-aging Strong impact and high bond strength

Active Publication Date: 2020-10-23
上海金力泰化工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of long-term and high-intensity ultraviolet radiation, ordinary silicone adhesives are prone to air bubbles and macula
[0004] Patent CN107652943A discloses a UV resistant, high and low temperature resistant silicone adhesive and its preparation method. The silicone adhesive contains the following components in parts by weight: 10-20 parts of epoxy resin compounds, 400-2000 cps terminal 20-60 parts of vinyl ethyl phenyl polysiloxane, 15-40 parts of terminal hydrogen-containing polysiloxane, 1-5 parts of heat-resistant filler, 15-30 parts of aliphatic diisocyanate, 0.009-40 parts of platinum-containing catalyst 0.1 part, but the instant high temperature resistance of this invention can only reach 140°C, which cannot meet the more stringent use requirements

Method used

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  • A kind of instantaneous high temperature resistant flexible adhesive and its preparation method
  • A kind of instantaneous high temperature resistant flexible adhesive and its preparation method
  • A kind of instantaneous high temperature resistant flexible adhesive and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0023] 1) Weigh 40 parts of 200cps-terminated vinylpolysiloxane compound and 1 part of 1000cps-terminated vinylethylphenylpolysiloxane in parts by weight, heat to 100°C and stir for 3 hours under the protection of inert gas, Cool to room temperature, add 3 parts of silicon carbide, and stir for 3.5 hours to obtain a colorless and transparent liquid of component A, which is sealed under the protection of an inert gas. Vinyl polysiloxane, vinyl-terminated ethylphenyl polysiloxane is a single-end vinyl-containing ethylphenyl polysiloxane with a vinyl content of 4%;

[0024] 2) Weigh 15 parts of methylphenylpolysiloxane with a hydrogen content of 5% and 0.01 part of Castel catalyst with a mass fraction of platinum of 0.2% in parts by weight, and add them to the reaction device under nitrogen protection After stirring, heat to 70°C, stir for 4 hours, and cool to room temperature to obtain a colorless and transparent liquid of component B, which is sealed under the protection of an ...

Embodiment 2

[0027] 1) Weigh 45 parts of 200cps-terminated vinylpolysiloxane compound and 8 parts of 400cps-terminated vinylethylphenylpolysiloxane in parts by weight, heat to 100°C and stir for 3 hours under the protection of inert gas, Cool to room temperature, add 3 parts of silicon carbide, and stir for 3.5 hours to obtain component A colorless transparent liquid, which is sealed under the protection of an inert gas; wherein, the vinyl-terminated polysiloxane compound is a single-terminal polysiloxane compound with a vinyl content of 2%. Vinyl polysiloxane, vinyl-terminated ethylphenyl polysiloxane is vinyl-terminated ethylphenyl polysiloxane with a vinyl content of 5%;

[0028] 2) Weigh 15 parts of methylphenylpolysiloxane with a hydrogen content of 5% and 0.01 part of Castel catalyst with a mass fraction of platinum of 0.2% in parts by weight, and add them to the reaction device under nitrogen protection After stirring, heat to 70°C, stir for 4 hours, and cool to room temperature to ...

Embodiment 3

[0031] 1) Weigh 45 parts of 300cps-terminated vinylpolysiloxane compound and 6 parts of 600cps-terminated vinylethylphenylpolysiloxane in parts by weight, heat to 100°C and stir for 3 hours under the protection of inert gas, Cool to room temperature, add 4 parts of silicon carbide, and stir for 3.5 hours to obtain a colorless and transparent liquid of component A, which is sealed under the protection of an inert gas; wherein, the vinyl-terminated polysiloxane compound is a single-terminal polysiloxane compound with a vinyl content of 1.5%. Vinyl polysiloxane, vinyl-terminated ethylphenyl polysiloxane is a single-end vinyl-containing ethylphenyl polysiloxane with a vinyl content of 4.5%;

[0032] 2) Weigh 15 parts of methylphenyl polysiloxane with a hydrogen content of 5% and 0.09 parts of a Castel catalyst with a mass fraction of 0.2% of platinum in parts by weight, and add them to the reaction device under nitrogen protection After stirring, heat to 70°C, stir for 4 hours, an...

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Abstract

The invention relates to an instant high temperature -resistant flexible adhesive and a preparation method thereof. The adhesive comprises the following components in parts by weight: 40-50 parts of 200-300 CPS vinyl-terminated polysiloxane compound, 1-8 parts of 400-2000 CPS vinyl-terminated ethylphenyl polysiloxane, 15-40 parts of terminal hydrogen-containing polysiloxane, 1-5 parts of a heat-resistant filler and 0.009-0.1 part of a platinum-containing catalyst. The organic silica gel adhesive prepared by the invention has the characteristics of high transparency, good thermal stability at instantaneous high temperature, high light stability, high flexibility and the like, and can be used in an adhesive system in display equipment with high temperature or strong ultraviolet radiation.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a flexible adhesive resistant to instantaneous high temperature and a preparation method thereof. Background technique [0002] Silicone adhesives have been widely used in mobile phones, notebook computers, conference systems and other electronic products. Although one-component silicone adhesives are widely used in daily environments, they cannot meet the needs of long-distance transportation and storage. Therefore, the development of two-component silicone adhesives is imperative. [0003] Currently commercially available silicone adhesives generally have the defect that they cannot be used normally under extreme high temperature environment or ultraviolet radiation environment. Generally, silicone adhesives can be used normally at room temperature. Once high temperature occurs instantaneously, the viscosity will decrease or even the colloid will fall off...

Claims

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Application Information

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IPC IPC(8): C09J183/07C09J183/05C09J11/04C09J11/08
CPCC08L2201/08C08L2205/025C08L2205/03C09J11/04C09J11/08C09J183/04C08L83/04C08K3/34
Inventor 郭浩
Owner 上海金力泰化工股份有限公司
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