Fluorine rubber-fluorosilicone rubber blend and preparation method thereof

A fluorosilicone rubber and fluororubber technology, which is applied in the fields of fluorine/fluorosilicone rubber compatibilization and rubber blending modification, can solve problems such as the decline of medium resistance, improve compatibility, good high and low temperature resistance, and improve blending. The effect of uniformity

Inactive Publication Date: 2015-04-22
NO 53 RES INST OF CHINA NORTH IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The blending of fluororubber and silicone rubber can significantly improve the low temperature resi

Method used

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Examples

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Comparison scheme
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Embodiment Construction

[0021] A blend of fluororubber and fluorosilicone rubber involved in the present invention and its preparation method will be further described below in conjunction with the examples. The following examples are only used to illustrate the technical solution and are not intended to limit the content of the invention.

[0022] What is not specifically stated in the examples are all parts by mass.

[0023] Embodiment one

[0024] The mass ratio of fluororubber to fluorosilicone rubber blend is: 50 parts of fluororubber (FE2602), 50 parts of fluorosilicone rubber, 2 parts of fluororubber grafted vinyl-terminated polymethyltrifluoropropylsiloxane, 15 parts of acetone, 5 parts of hydroxyfluorosilicone oil, 12 parts of fumed silica, 10 parts of precipitated silica, 1 part of dicumyl peroxide, 3 parts of triallyl isocyanurate;

[0025] The preparation method of fluororubber and fluorosilicone rubber blend is as follows:

[0026] (1) Mix 100 parts by weight of fluorine rubber FE2602,...

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Abstract

The invention belongs to the technical field of materials and relates to a rubber blending modification technology. Due to the introduction of vinyl-terminated poly(trifluoropropyl) siloxane to the main chain of fluorine rubber, the compatibility of fluorine rubber and fluorosilicone rubber can be improved, and due to the reduction of the viscosity difference between fluorine rubber and fluorosilicone rubber, the blending uniformity of fluorine rubber and fluorosilicone rubber can be improved. A fluorine rubber and fluorosilicone rubber blend provided by the invention at least comprises main rubber consisting of fluorine rubber and fluorosilicone rubber, a compatibilizer and a fluorine rubber viscosity modifier, wherein the fluorine rubber accounts for 10-50% in the main rubber, the compatibilizer is fluorine rubber grafted vinyl-terminated poly(trifluoropropyl)siloxane, the use amount of the compatibilizer is 2-20% of that of the main rubber, and the use amount of the fluorine rubber viscosity modifier is 30-45% of that of fluorine rubber. The fluorine rubber and fluorosilicone rubber blend is prepared by adopting a high-temperature vacuum blending process, has good high-temperature resistance and good medium resistance and low compression set, can be applied to the technical field of processing of sealing products and damping parts and can be particularly applied to the fields with oil resistance.

Description

technical field [0001] The invention belongs to the technical field of materials, and relates to rubber blending modification technology, in particular to fluorine / fluorosilicone rubber compatibilization technology. Background technique [0002] Fluorine rubber has excellent heat resistance, ozone resistance, oil resistance, chemical corrosion resistance and air permeability resistance. It can be widely used in aerospace, army equipment, civilian automobile manufacturing and other industries. However, the low temperature resistance of fluororubber materials can generally only reach -20°C. [0003] The blending of fluororubber and silicone rubber can significantly improve the low temperature resistance of fluororubber, but the medium resistance is greatly reduced due to the presence of silicone rubber. For example, the JSRJENIX F developed by Japan Synthetic Rubber Company and the X-36-100U series fluororubber / silicone rubber blend (50 / 50, mass ratio) of Japan Shin-Etsu Com...

Claims

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Application Information

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IPC IPC(8): C08L27/12C08L83/08C08L87/00C08K13/02C08K3/36C08K5/3492C08K5/14C08K3/04C08K3/16C08K3/34C08K5/5419C08K5/549C08G81/02B29C35/02
CPCC08L27/12B29C35/0233C08G81/02C08L2201/08C08L2205/025C08L2205/03C08L2205/035
Inventor 杜明欣杜华太张志刚张春梅崔俞宫志欣邹德广庞明磊张斌
Owner NO 53 RES INST OF CHINA NORTH IND GRP
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