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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AI-Extracted 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 c...

Method used

Can find out by above-mentioned performance comparison test example: in comparative example 1-5, when heat-resistant filler consumption is insufficient, the adhesive after solidification can't keep stable under the condition of high-low temperature cycle; If heat-resistant If there are too many fill...

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.

Application Domain

Non-macromolecular adhesive additivesMacromolecular adhesive additives

Technology Topic

OrganosiliconAdhesive system +11

Image

Examples

Experimental program(5)
Comparison scheme(5)
Effect test(1)

Example Embodiment

[0022] Example 1

[0023] 1) Weigh 40 parts of 200 cps vinyl-terminated polysiloxane compound and 1 part of 1000 cps vinyl-terminated polysiloxane compound in parts by weight. Under the protection of inert gas, heat to 100°C and stir for 3 hours. 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 inert gas. Among them, the vinyl-terminated polysiloxane compound is a single-ended vinyl content of 1%. Vinyl polysiloxane, vinyl-terminated ethyl phenyl polysiloxane is a single-end vinyl-containing ethyl phenyl polysiloxane with a vinyl content of 4%;

[0024] 2) Weigh 15 parts of methylphenyl polysiloxane with 5% hydrogen content and 0.01 part of Castel catalyst with 0.2% platinum content in parts by weight, and add them to the reactor under the protection of nitrogen 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 inert gas;

[0025] 3) Mixing component A and component B, and degassing under reduced pressure, to obtain the instantaneous high temperature resistant flexible adhesive. The organic silicone adhesive is uniformly coated on the surface of the substrate and cured in an environment of 80° C. for 35 minutes to obtain the finished product.

Example Embodiment

[0026] Example 2

[0027] 1) Weigh 45 parts of 200 cps vinyl-terminated polysiloxane compound and 8 parts of 400 cps vinyl-terminated phenyl polysiloxane in parts by weight. Under the protection of inert gas, heat to 100°C and stir for 3 hours. 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 an inert gas; among them, the vinyl-terminated polysiloxane compound is a single-end containing 2% vinyl content Vinyl-terminated polysiloxane, vinyl-terminated ethyl phenyl polysiloxane is a single-ended vinyl-containing ethyl phenyl polysiloxane with a vinyl content of 5%;

[0028] 2) Weigh 15 parts of methylphenyl polysiloxane with 5% hydrogen content and 0.01 part of Castel catalyst with 0.2% platinum content in parts by weight, and add them to the reactor under the protection of nitrogen 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 inert gas;

[0029] 3) Mixing component A and component B, and degassing under reduced pressure, to obtain the instantaneous high temperature resistant flexible adhesive. The organic silicone adhesive is evenly coated on the surface of the substrate and cured in an environment of 90°C for 45 minutes to obtain the finished product.

Example Embodiment

[0030] Example 3

[0031] 1) Weigh 45 parts of 300 cps vinyl-terminated polysiloxane compound and 6 parts of 600 cps vinyl-terminated phenyl polysiloxane in parts by weight. Under the protection of inert gas, heat to 100°C and stir for 3 hours. 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 inert gas; among them, the vinyl-terminated polysiloxane compound is a single-ended vinyl content of 1.5%. Vinyl polysiloxane, vinyl-terminated ethyl phenyl polysiloxane is a single-end vinyl-containing ethyl phenyl polysiloxane with a vinyl content of 4.5%;

[0032] 2) Weigh 15 parts of methylphenyl polysiloxane with 5% hydrogen content and 0.09 parts of Castel catalyst with 0.2% platinum content in parts by weight, and add them to the reactor under the protection of nitrogen 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 inert gas;

[0033] 3) Mixing component A and component B, and degassing under reduced pressure, to obtain the instantaneous high temperature resistant flexible adhesive. The organic silicone adhesive is evenly coated on the surface of the substrate and cured in an environment of 90°C for 45 minutes to obtain the finished product.

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Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Strong impact resistance
High bond strength

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

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Image

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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