A kind of organic rectorite modified silicone fluororubber seal and preparation method thereof

A technology of organic rectorite and silicon fluorine rubber, applied in the direction of engine seals, mechanical equipment, engine components, etc., can solve the problems of poor aging resistance, loss of function, inability to meet and other problems, achieve high mechanical strength, improve mechanical performance, resistance to environmental erosion

Inactive Publication Date: 2015-10-14
HUBEI FEIHONG NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Traditional seals in complex environments use nitrile rubber and fluororubber seals, because the molecular chain of nitrile rubber contains a large number of unsaturated double bonds and has poor aging resistance [Synthetic Rubber Industry, 2002-01-15, 25( 1): 28-31], in the environment of the vehicle hydraulic system, it is easy to harden and crack after thermal aging and lose its function; fluororubber has a large permanent deformation due to the strong polarity of the fluorine atoms on the macromolecular chain [FLUIDMACHINERY Vol.131, No19, 2003]
Therefore, neither the traditional nitrile rubber nor fluororubber can meet the design requirement of being able to withstand the ultra-low temperature of -60 degrees, and in the environment of 30 MPa, the deformation amount is less than 15% after the number of times of compression is 10W.

Method used

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  • A kind of organic rectorite modified silicone fluororubber seal and preparation method thereof
  • A kind of organic rectorite modified silicone fluororubber seal and preparation method thereof
  • A kind of organic rectorite modified silicone fluororubber seal and preparation method thereof

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specific Embodiment approach 1

[0016] Specific embodiment 1: The organized rectorite-modified fluorosilicone rubber prepared in this embodiment consists of 80 to 90 parts of fluorosilicone rubber, 10 to 20 parts of silicone rubber, 40 parts of meteorological white carbon black, and hydroxyl 2 parts of silicone fluorine oil, 1.5 parts of vinyl silicone fluoride oil, 0.5 parts of 2,5-dimethyl-2,5-bis(tert-butyl peroxide)hexane (double 25), 3 parts of iron trioxide to make.

specific Embodiment approach 2

[0017] Specific embodiment 2: The rectorite-modified fluorosilicone rubber prepared in this embodiment consists of 80-90 parts of fluorosilicone rubber, 10-20 parts of silicone rubber, and 5-6 parts of organic rectorite according to the mass fraction ratio. 30-35 parts of French silica, 2-2.5 parts of hydroxyl silicone fluorine oil, 1-1.5 parts of vinyl silicone fluorine oil, 2,5-dimethyl-2,5-bis(tert-butyl peroxide)hexane Prepared from 0.5-0.8 parts (double 25), 3-5 parts of iron trioxide.

specific Embodiment approach 3

[0018] Specific embodiment 3: the silicone fluororubber modified by the organic rectorite prepared in this embodiment is composed of 80 parts of silicon fluororubber, 20 parts of silicone rubber, 3 parts of organic rectorite, and meteorological white carbon black according to the mass fraction ratio 30 parts, 2 parts of hydroxy silicone fluorine oil, 0.5 parts of vinyl silicone fluorine oil, 0.5 parts of 2,5-dimethyl-2,5-bis(t-butylperoxy)hexane (double 25), trioxide 5 servings of iron. Mix the weighed fluorosilicone rubber, silicone rubber and organic rectorite into the mixing chamber of the internal mixer for melting and intercalation to obtain a mixture (the intercalation temperature is 100 degrees, the rotating speed is 35r / Min, and the intercalation time is 10Min). Put the mixture on the roller with a temperature of 30-40 degrees and a roller distance of 2 mm, then add the weighed white carbon black after the rollers are wrapped, add hydroxyl silicone fluorine oil, vinyl...

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Abstract

The invention relates to a new use of organic rectorite modified fluorosilicone rubber, ie., a organic rectorite modified fluorosilicone rubber sealing and a preparation method thereof. The rubber sealing has the following special functions: 1, the rubber sealing has excellent low temperature mechanical property, wherein a brittleness temperature of the rubber sealing is -60 DEG C; 2, the rubber sealing has excellent compression set resistance, wherein the rubber sealing has a rubber sealing less than 15% after 100000 impacts under pressure of 30 MPa; 3, the rubber sealing has high mechanical strength, tensile strength of 8 MPa, elongation at break of 300%, and good sealability; 4, the rubber sealing has characteristics of oil resistance, ozone resistance, environmental erosion resistance, no peeling, no cracking, and has service life more than 10 years.

Description

Technical field: [0001] The invention relates to an organic rectorite-modified silicone fluororubber seal and a preparation method thereof, belonging to the field of polymer materials. Background technique: [0002] Since entering the 21st century, my country's automobile industry has developed rapidly. At present, China's automobile industry is in a period of rapid development of scale, grade, and level. More and more high-tech applications are used in the manufacture of automobiles, especially cars. The rubber industry is an important supporting industry for the automobile industry. More than 70% of the raw rubber consumed in the world is used for automobiles every year. Rubber materials play an irreplaceable role in automobiles with a series of excellent properties, especially the unique high elasticity. [0003] With the improvement of the technical parameters of mechanical seals for automobiles and the international market competition after joining the WTO and meeting ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/08C08L83/04C08K13/06C08K9/04C08K3/34C08K3/36C08K5/14C08K3/22F16J15/00B29C35/00
Inventor 邓飞李白露熊艳蔡芳昌
Owner HUBEI FEIHONG NEW MATERIAL TECH
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