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UV-cured liquid silicone rubber for online gasket curing

A liquid silicone rubber and gasket technology, applied in the field of UV curing liquid silicone rubber, can solve the problems of weak weather resistance, high temperature resistance, oil resistance, etc., and achieve the effect of fast curing speed, easy availability of raw materials and lower production costs.

Inactive Publication Date: 2021-04-27
浙江中特化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the UV curing materials used in the online curing sealing gaskets currently used are light curing acrylate polymers, and their weather resistance, high temperature resistance, oil resistance and other properties are weaker than the silicone rubber materials used in traditional FIPG

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1: A kind of UV curable liquid silicone rubber for on-line curing gasket is composed of the following components:

[0036] 40 parts of vinyl-terminated polydimethylsiloxane, the viscosity of which is 500mPa·s;

[0037] 5 parts of polyvinyl polydimethylsiloxane;

[0038] 20 parts of polymethyl hydrogen siloxane, its hydrogen content is 1.5%;

[0039] Vinyl silicone resin 15 parts, its viscosity is 10000mPa·s;

[0040] 15 parts of filler;

[0041] 0.1 parts of tackifier;

[0042] Catalyst 0.02 part;

[0043] Inhibitor 0.2 parts;

[0044] A kind of UV curing liquid silicone rubber for on-line curing gasket, its preparation method comprises the following steps:

[0045] S1. Take 40 parts of vinyl-terminated polydimethylsiloxane with a viscosity of 500mPa·s, 5 parts of polyvinyl polydimethylsiloxane, and polymethylhydrogensiloxane with a hydrogen content of 1.5%. Add 20 parts and 5 parts of vinyl silicone resin with a viscosity of 10000mPa·s into the double...

Embodiment 2

[0050] Embodiment 2: A kind of UV curable liquid silicone rubber for on-line curing gasket is composed of the following components:

[0051] 80 parts of vinyl-terminated polydimethylsiloxane, the viscosity of which is 150000mPa·s;

[0052] 20 parts of polyvinyl polydimethylsiloxane;

[0053] 5 parts of polymethyl hydrogen siloxane, its hydrogen content is 0.2%;

[0054] 5 parts of vinyl silicone resin, the viscosity of which is 1500mPa·s;

[0055] 5 parts of filler;

[0056] 1 part of tackifier;

[0057] 0.2 parts of catalyst;

[0058] Inhibitor 0.02 part;

[0059] A kind of UV curing liquid silicone rubber for on-line curing gasket, its preparation method comprises the following steps:

[0060] S1. Take 80 parts of vinyl-terminated polydimethylsiloxane with a viscosity of 150000mPa·s, 20 parts of polyvinyl polydimethylsiloxane, and polymethylhydrogensiloxane with a hydrogen content of 0.2%. Add 5 parts and 5 parts of vinyl silicone resin with a viscosity of 1500mPa·s i...

Embodiment 3

[0065] Embodiment three: a kind of UV curable liquid silicone rubber for on-line curing gasket is composed of the following components:

[0066] 55 parts of vinyl-terminated polydimethylsiloxane, the viscosity of which is 5000mPa·s;

[0067] 12 parts of polyvinyl polydimethylsiloxane;

[0068] 14 parts of polymethyl hydrogen siloxane, its hydrogen content is 0.8%;

[0069] 12 parts of vinyl silicone resin, the viscosity is 6500mPa·s;

[0070] 10 parts of filler;

[0071] 0.5 parts of tackifier;

[0072] Catalyst 0.1 part;

[0073] Inhibitor 0.15 parts;

[0074] A kind of UV curing liquid silicone rubber for on-line curing gasket, its preparation method comprises the following steps:

[0075] S1. Take 55 parts of vinyl-terminated polydimethylsiloxane with a viscosity of 5000mPa·s, 12 parts of polyvinyl polydimethylsiloxane, and 14 parts of polymethylhydrogensiloxane with a hydrogen content of 0.8%. 12 parts and 12 parts of vinyl silicone resin with a viscosity of 6500mPa...

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Abstract

The invention relates to the technical field of UV-cured liquid silicone rubber, and discloses UV-cured liquid silicone rubber for online gasket curing. The UV-cured liquid silicone rubber is prepared from the following components in parts by weight: 40-80 parts of vinyl-terminated polydimethylsiloxane, 5-20 parts of polyvinyl polydimethylsiloxane, 5-20 parts of polymethylhydrosiloxane, 5-15 parts of vinyl silicone resin, 5-15 parts of filler, 0.1-1 part of a tackifier, 0.02-0.2 parts of a catalyst and 0.02-0.2 parts of an inhibitor. The UV-cured liquid silicone rubber material is applied to an online gasket curing process and can be rapidly cured to form elastomer silicone rubber, and compared with condensed silicone rubber or high-temperature cured silicone rubber, the curing speed is high, the production efficiency is high, large-scale continuous production is convenient to achieve, and the practicability of the UV curing liquid silicone rubber for online gasket curing is enhanced.

Description

technical field [0001] The invention relates to the technical field of UV curing liquid silicone rubber, in particular to a UV curing liquid silicone rubber used for online curing gaskets. Background technique [0002] Silicone rubber is an elastic polymer material whose main chain is composed of silicon-oxygen atoms (Si-O-Si), which has excellent compression resilience, high temperature and low temperature resistance, and chemical resistance. Therefore, solid gaskets made of silicone rubber materials are widely used in compression seals in mechanical assembly, automobile manufacturing, and electrical and electronic fields, and can effectively seal various media such as water, oil, and gas. However, when the solid silicone rubber gasket is used, it needs to be preformed, which cannot quickly adapt to sealing surfaces of different shapes and sizes, and the assembly efficiency is low. With the development of mechanized rapid dispensing equipment, Formed-in-place gasket techno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/04C08K9/06C08K7/26
CPCC08L83/04C08L2205/025C08L2205/035C08K9/06C08K7/26
Inventor 杨玉龙
Owner 浙江中特化工有限公司