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Ultraviolet-resistant organic silicon adhesive and preparation method thereof

An organic silica gel, UV-resistant technology, used in adhesives, adhesive additives, polymer adhesive additives, etc., can solve the problems of complex production process, harsh production conditions, and can not be used normally, saving production time and simplifying production conditions, the effect of good UV resistance

Inactive Publication Date: 2019-12-03
丁爱顺
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In these production processes, there are generally some technical defects, such as: harsh production conditions, complicated production process, long production time, low production efficiency, etc.
[0003] Adhesives currently on the market generally have bubbles and degumming under long-term ultraviolet light irradiation, which can lead to abnormal use

Method used

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  • Ultraviolet-resistant organic silicon adhesive and preparation method thereof
  • Ultraviolet-resistant organic silicon adhesive and preparation method thereof

Examples

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Effect test

preparation example Construction

[0024] In the embodiment of the present invention, the preparation method of the UV-resistant silicone adhesive comprises the following steps:

[0025] Step 1, adding epoxy-based ethylenically unsaturated compounds and 400cps to 2000cps terminal vinyl polysiloxane into an open container for stirring, then adding polyvinyl polysiloxane and platinum catalyst, and continuing to stir to obtain The mixture was filtered to remove impurities to obtain component A.

[0026] The specific operation is: weigh in parts by weight: 20 to 50 parts of ethylenically unsaturated epoxy-based compounds, 10 to 18 parts of vinyl-terminated polysiloxanes of 400 cps to 2000 cps, and 0.5 to 18 parts of polyvinyl polysiloxanes. 1 part and 0.009 to 0.1 parts of platinum catalyst; add the ethylenic unsaturated compound of epoxy group and vinyl-terminated polysiloxane into the stirring tank of the mixer in turn, and stir mechanically at the speed of 40rpm / min~60rpm / min 4h~5h, then add polyvinyl polysilox...

Embodiment 1

[0042] Step 1, prepare component A, weigh in parts by weight: 20 parts of allyl ethylene glycol monoglycidyl ether, 10 parts of 400 cps vinyl-terminated vinyl methylpolysiloxane, 0.5 parts of polydimethylsiloxane part and 0.009 part of tetramethyltetravinyl cyclotetrasiloxane complex of chloroplatinic acid; add allyl glycol monoglycidyl ether and terminal vinyl methyl polysiloxane into an open stirring tank Stir, and mechanically stir for 5 hours at a speed of 40 rpm / min to 60 rpm / min, then add polydimethylsiloxane and chloroplatinic acid tetramethyltetravinylcyclotetrasiloxane complex, and continue stirring for 2 hours; Filter the obtained mixture from the stirred tank through a 300-mesh filter under normal pressure to remove impurities, and put it into a finished product barrel to obtain component A.

[0043] Step 2, prepare component B, weighed in parts by weight: 25 parts of 400 cps terminal vinyl methyl polysiloxane, 16 parts of terminal hydrogen polysiloxane with a hydro...

Embodiment 2

[0046] Step 1, prepare component A, weigh in parts by weight: 30 parts of allyl propylene glycol monoglycidyl ether, 17 parts of 800 cps vinyl-terminated polymethylpolysiloxane, 0.7 part of polydimethylsiloxane and 0.009 part of tetramethyl tetravinyl cyclotetrasiloxane complex of chloroplatinic acid; allyl propylene glycol monoglycidyl ether and terminal vinyl methyl polysiloxane are added in an open stirring tank and stirred, Stir mechanically at a speed of 40rpm / min to 60rpm / min for 5h, then add polydimethylsiloxane and chloroplatinic acid tetramethyltetravinylcyclotetrasiloxane complex, and continue stirring for 2h; the resulting mixture Remove impurities from the stirred tank by filtering through a 300-mesh filter under normal pressure, and put it into a finished product barrel to obtain component A.

[0047] Step 2, prepare component B, weigh in parts by weight: 35 parts of 400 cps terminal vinyl methyl polysiloxane, 12 parts of terminal hydrogen polysiloxane with a hydr...

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Abstract

The invention belongs to the technical field of macromolecule materials and provides an ultraviolet-resistant organic silicon adhesive and a preparation method thereof. The ultraviolet-resistant organic silicon adhesive comprises a component A and a component B, wherein the component A comprises the following components in parts by weight: 20-50 parts of an epoxy group containing alkene type unsaturated compound, 10-18 parts of vinyl terminated polysiloxane of 400-2000cps, 0.5-1 part of polyvinyl polysiloxane and 0.009-0.1 part of a platinum catalyst; the component B comprises the following components in parts by weight: 25-40 parts of f vinyl terminated polysiloxane of 400-2000cps, 10-16 parts of terminated hydrogen-containing polysiloxane, 5-10 parts of o-hydroxydibenzophenone and 0.5-5parts of a polyallyl compound; and the weight percentage of platinum in the platinum catalyst is 0.1-0.15%. The component A is prepared in an opening system, the component B is prepared in a sealed system, and the two components are mixed to prepare the adhesive. By adopting the preparation method of the ultraviolet-resistant organic silicon adhesive, production conditions can be simplified, the production time can be shortened, and the prepared ultraviolet-resistant organic silicon adhesive has a very high refractive index, light transmittance and ultraviolet aging resistance.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to an ultraviolet-resistant organic silica gel adhesive and a preparation method thereof. Background technique [0002] So far, most of the traditional production processes of adhesives are completed in several stages such as high-speed dispersion, high-pressure extrusion, vacuum defoaming and extrusion filling in a vacuum mixer. In these production processes, there are generally some technical defects, such as: harsh production conditions, complicated production process, long production time, low production efficiency and so on. [0003] Adhesives currently on the market generally have bubbles and degumming under long-term exposure to ultraviolet light, resulting in failure to use normally. With the wide application of silicone adhesives in various industrial and technical fields, its preparation process has also received attention and research. How to devel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/07C09J183/04C09J183/05C09J11/06C09J11/08
CPCC08L2201/08C08L2201/10C08L2205/025C08L2205/035C09J11/06C09J11/08C09J183/04C08L83/04
Inventor 丁爱顺
Owner 丁爱顺
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