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A kind of liquid silicone rubber with low compression set and preparation method

A liquid silicone rubber and permanent deformation technology, applied in the field of addition type liquid silicone rubber, can solve the problems of low compression set, low hardness and dimensional stability at the same time, achieve low hardness, improve compression set, and compress permanent small deformation effect

Active Publication Date: 2017-01-04
ZHEJIANG XINAN CHEM INDAL GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

None of these compositions can simultaneously satisfy low compression set, low hardness and dimensional stability

Method used

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  • A kind of liquid silicone rubber with low compression set and preparation method
  • A kind of liquid silicone rubber with low compression set and preparation method
  • A kind of liquid silicone rubber with low compression set and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Basic rubber formula (1):

[0038] formula Vinyl polysiloxane filler Auxiliary Types of Viscosity 50,000 centipoise Vinyl content 0.8% Precipitated silica Hexamethyldisilazane Fraction 100 30 6

[0039] Liquid silicone rubber formula:

[0040] formula base compound platinum catalyst crosslinking agent Inhibitor Types of Recipe (1) Custer Catalyst Hydrogen content 0.05% Ethynyl cyclohexanol Fraction 100 0.2 11 0.1

Embodiment 2

[0042] Basic rubber formula:

[0043] formula Vinyl polysiloxane filler Auxiliary Types of Viscosity 50,000 centipoise Vinyl content 0.8% Precipitated silica Hexamethyldisilazane Fraction 100 40 8

[0044] Liquid silicone rubber formula:

[0045] formula base compound platinum catalyst crosslinking agent Inhibitor Types of Custer Catalyst Hydrogen content 0.05% Ethynyl cyclohexanol Fraction 100 0.2 10 0.1

Embodiment 3

[0047] Basic rubber formula:

[0048] formula Vinyl polysiloxane filler Auxiliary Types of Viscosity 50,000 centipoise Vinyl content 0.8% Aluminum oxide KH-560 Fraction 100 40 1

[0049] Liquid silicone rubber formula:

[0050] formula base compound platinum catalyst crosslinking agent Inhibitor Types of Custer Catalyst Hydrogen content 0.05 Ethynyl cyclohexanol Fraction 100 0.2 10 0.1

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Abstract

The invention relates to a low compression set liquid silastic and a preparation method thereof. The low compression set liquid silastic is prepared from components A and B according to a certain mass ratio, wherein the component A is prepared from the following components in parts by weight: 100 parts of liquid silastic base rubber and 0.2-0.5 part of a catalyst; the component B is prepared from following components in parts by weight: 100 parts of liquid silastic base rubber, 6-25 parts of a crosslinking agent and 0.1-0.3 part of an inhibitor.

Description

technical field [0001] The invention relates to a liquid silicone rubber with low compression set and a preparation method thereof, mainly referring to a liquid silicone rubber product with low compression set, high rebound and low hardness after molding, and belongs to the technical field of addition-type liquid silicone rubber. Background technique [0002] Because liquid silicone rubber has excellent properties such as high and low temperature resistance, ultraviolet resistance, radiation resistance, weather resistance, electrical insulation, high air permeability, and physiological inertia, it is widely used in aviation, aerospace, electronic appliances, chemicals, machinery, medicine, daily necessities, etc. has been widely applied. Silicone rubber for rubber rollers used in laser printers, copiers, fax machines, and ATMs requires properties such as low hardness, low compression set, and dimensional stability. [0003] Compositions having low compression set upon cross...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/07C08L83/05C08K5/05C08K3/36C08K3/34C08K5/5445C08K5/5435C08L83/06
Inventor 王伟陈丽云谢亚军邓圣志宋新锋周海峰
Owner ZHEJIANG XINAN CHEM INDAL GROUP