A kind of high-strength low-pressure variable fluorine rubber material and its preparation method

Abstract

The invention provides a high-strength ow-pressure-change fluoro-rubber material and a preparation method thereof, and belongs to the technical field of high-performance rubber materials. The technical scheme is that the high-strength ow-pressure-change fluoro-rubber material comprises the following components in parts by mass: 100 parts of fluoro-rubber, 2-5 parts of active MgO, 3-7 parts of Ca(OH)2, 0.5-1.5 parts of palm wax, 0.4-0.7 part of an accelerant, 1.0-2.0 parts of a vulcanizing agent, 15-25 parts of carbon black, 5-9 parts of potassium titanate whisker (PTW) and 0.5-1.2 parts of a coupling agent. A preparation method is also disclosed. The fluoro-rubber material provided by the invention has the beneficial effects that the fluoro-rubber material prepared by the method provided by the invention has high strength, high modulus and low compression permanent deformation, and has excellent high temperature resistance and aging resistance.

Description

technical field [0001] The invention relates to the technical field of high-performance rubber materials, in particular to a high-strength low-pressure variable fluorine rubber material and a preparation method thereof. Background technique [0002] With the development of science and technology, higher requirements are put forward for the comprehensive performance of fluorine rubber (FKM). The high viscosity of FKM itself determines that it is difficult to achieve uniform mixing with carbon black with small particle size. It has excellent performance in high temperature resistance, oil resistance, chemical medium resistance, etc., but its low strength restricts its application in more fields. Therefore, in recent years, there have been researches on the use of one-dimensional nanomaterials --- carbon nanotubes to reinforce fluororubber. Although the strength of this rubber has been improved to a certain extent, a negative effect brought by it at the same time is compressio...

AI Technical Summary

Problems solved by technology

The high viscosity of FKM itself determines that it is difficult to achieve uniform mixing with carbon black with small particle size. It has excellent performance in high temperature resistance, oil resistance, chemical medium resistance, etc., but its low strength restricts its application in more fields

Therefore, in recent years, there have been researches on the use of one-dimensional nanomaterials --- carbon nanotubes to reinforce fluororubber. Although the strength of this rubber has been improved to a certain extent, a negative effect brought by it at the same time is compression permanent deformation. Too large, for sealing materials used in extreme environments, compression set is a key factor, therefore, this compound can not meet the requirements

Images