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A flame-retardant high-tear-resistant liquid silicone resin

A technology of liquid silicon and MQ silicone resin, which is applied in the field of silicone resin, can solve the problems of insufficient storage stability, flame retardancy and tear resistance, etc., and achieve improved flame retardancy, excellent tear resistance, and good physical properties. performance effect

Active Publication Date: 2015-09-30
ZHUHAI HENGWANG ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a flame-retardant high-tear-resistant liquid silicone resin, which solves the problems of existing liquid silicone resins used for surface coating of glass fiber sleeves, silicone tubes, glass fiber cloth, etc. The tear performance is not good enough, and the storage is not stable enough

Method used

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  • A flame-retardant high-tear-resistant liquid silicone resin
  • A flame-retardant high-tear-resistant liquid silicone resin

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Experimental program
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Effect test

Embodiment 1

[0023] Embodiment 1. Preparation of a flame-retardant and high-tear-resistant liquid silicone resin

[0024] A flame-retardant and high-tear-resistant liquid silicone resin, in parts by weight, comprising 100 parts of MQ silicone resin, 50 parts of linear phenyl vinyl siloxane as reactive diluent, and linear phenyl modified phenyl vinyl siloxane as crosslinking agent. 5 parts of hydrogen siloxane, 5 parts of fumed silicon dioxide as the reinforcing agent, and 0.01 part of dimethyl fumarate as the temperature-sensitive inhibitor.

[0025] The ratio of the M link to the Q link in the above-mentioned MQ silicone resin is 0.6.

[0026] The specific surface area of ​​the above-mentioned fumed silica is 160m 2 / g.

[0027] The linear phenyl vinyl siloxane comprises the following steps: 50 parts of bis(methylphenyl vinyl) disiloxane and 150 parts of diphenyl dimethoxysilane are put into the reactor, Raise the temperature to 85°C, add an appropriate amount of 30 parts of water and ...

Embodiment 2

[0033] 3) After passing the physical performance test of the banburying material, grind to remove its blocky material, then add the inhibitor dimethyl fumarate, and the crosslinking agent linear phenyl-modified hydrogen-containing siloxane, stir for 2 hours, and press filter to obtain Liquid silicone. Embodiment 2, preparation of a flame-retardant high-tear-resistant liquid silicone resin

[0034] A flame-retardant and high-tear-resistant liquid silicone resin, in parts by weight, comprising 150 parts of MQ silicone resin, 100 parts of linear phenyl vinyl siloxane as reactive diluent, and linear phenyl modified phenyl vinyl siloxane as crosslinking agent. 10 parts of hydrogen siloxane, 20 parts of fumed silica as a reinforcing agent, and 0.15 parts of dimethyl fumarate as a thermosensitive inhibitor.

[0035] The ratio of the M link to the Q link in the above-mentioned MQ silicone resin is 0.8.

[0036] The specific surface area of ​​the above-mentioned fumed silica is 300m ...

Embodiment 3

[0043] 3) After passing the physical performance test of the banburying material, grind to remove its blocky material, then add the inhibitor dimethyl fumarate, and the crosslinking agent linear phenyl-modified hydrogen-containing siloxane, stir for 2 hours, and press filter to obtain Liquid silicone. Embodiment 3. Preparation of a flame-retardant and high-tear-resistant liquid silicone resin

[0044] A flame-retardant and high-tear-resistant liquid silicone resin, in parts by weight, including 120 parts of MQ silicone resin, 80 parts of linear phenyl vinyl siloxane as reactive diluent, and linear phenyl modified phenyl vinyl siloxane as crosslinking agent. 6 parts of hydrogen siloxane, 10 parts of fumed silica as a reinforcing agent, and 0.08 parts of dimethyl fumarate as a thermosensitive inhibitor.

[0045] The ratio of the M link to the Q link in the above-mentioned MQ silicone resin is 0.7.

[0046] The specific surface area of ​​the above-mentioned fumed silica is 240m...

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Abstract

The invention discloses a flame-retardant liquid silicone rubber of high tear resistance. The silicone rubber comprises in parts by weight the following components: 100-150 parts of MQ silicone resin, 50-100 parts of reactive diluent, which uses linear phenyl vinyl siloxane, 5-10 parts of cross-linking agent, which uses linear phenyl hydrosiloxane, 5-20 parts of reinforcing agent, which uses fumed silica, and 0.01-0.15 part of thermosensitive inhibitor, which uses dimethyl fumarate. Phenyl group is applied to pre-modifying the reactive diluent and the cross-linking agent in the preparation process of the reactive diluent and the cross-linking agent to greatly improve the flame retardant performance, the high temperature resistance and the volume resistance of the product. By combining the MQ-based silicone resin and the fumed silica in the preparation process of the silicone rubber, the prepared silicone rubber has a better physical performance and excellent tear strength.

Description

technical field [0001] The invention relates to silicone resin, in particular to a flame-retardant and high-tear-resistant liquid silicone resin used for surface coating of glass fiber sleeves, silicone tubes, glass fiber cloth and the like. Background technique [0002] Silicone resins are thermosetting polysiloxane polymers with a highly cross-linked structure. Early products were made from organochlorosilanes (such as MeSiCl 3 、Me 2 SiCl 2 , MePhSiCl 2 , PhSiCl 3 、Ph 2 SiCl 2 ) through hydrolytic condensation and rearrangement to prepare an active siloxane prepolymer stable at room temperature. When applied, it is further heated to shrink and cross-link into a harder or less elastic solid silicone. Silicone resin has good electrical insulation properties, temperature resistance and waterproof effect. And the weather resistance is better than general organic resin. Therefore, it is an ideal material for the coating of heat-resistant, heat-resistant and moisture-p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/04C08L83/07C08L51/08C08K3/36C08K5/11C08G77/20C08F283/12C09D183/04C09D183/07C09D151/08C09D7/12D06M15/643D06M11/79D06M13/224
Inventor 李讨饭赵强程琳根王晶李萍
Owner ZHUHAI HENGWANG ELECTRONICS
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