A sliding cross-linked network acrylate rubber seal and its preparation method

A rubber seal, acrylic technology, used in the field of sealing

Active Publication Date: 2021-04-27
HUANGSHAN SHANGYI RUBBER & PLASTIC PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are no relevant reports on the application of polyrotaxanes in the preparation of acrylate rubber seals

Method used

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  • A sliding cross-linked network acrylate rubber seal and its preparation method
  • A sliding cross-linked network acrylate rubber seal and its preparation method
  • A sliding cross-linked network acrylate rubber seal and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0022] The raw material compositions of Examples 1-6 are shown in Table 1, and the amounts of each component in Table 1 refer to parts by mass.

[0023] The raw materials used in Table 1 are described as follows: Acrylate rubber is epoxy type. The linear molecule of the polyrotaxane is polymethyl methacrylate, the cyclic molecule is hydroxypropylated γ-cyclodextrin, and the end-capping group is a trityl group. The vulcanizing agent is trimethylbenzyl ammonium chloride. The anti-aging agent is 4020. The anti-scorch agent is N-cyclohexylthiotitanimide. Lubricants are fatty acids. The reinforcing agent is FEF carbon black.

[0024] Preparation steps: (1) Add the acrylate rubber, polyrotaxane, anti-aging agent, reinforcing agent, and lubricant in the formula in Table 1 to the internal mixer, and knead at 110°C for 10 minutes; (2) Add vulcanizing agent, anti-scorch (3) After the mixing is completed, put the rubber into a flat vulcanizing machine for two times of vulcanization....

Embodiment 7

[0036] The materials used, proportioning and preparation steps are the same as in Example 2, except that the linear molecule of the polyrotaxane is polyvinyl acetate, the cyclic molecule is hydroxypropylated γ-cyclodextrin, and the end-capping group is adamantine Alkyl groups.

Embodiment 8

[0038] The materials, proportions and preparation steps used are the same as in Example 2, except that the vulcanizing agent is polyethyleneimine, the lubricant is silicone oil, and the reinforcing agent is a composition of white carbon black and talcum powder (mass ratio 1:1).

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PUM

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Abstract

The invention relates to a high-performance acrylate rubber seal and a preparation method thereof, belonging to the technical field of sealing. The sliding cross-linked network acrylate rubber seal is composed of the following raw materials: acrylate rubber, polyrotaxane, vulcanizing agent, anti-aging agent, anti-scorch agent, lubricant, reinforcing agent. The present invention introduces supramolecular polyrotaxane into acrylate rubber, and forms a sliding cross-linked network structure through the co-vulcanization of the two, which not only retains the advantages of high temperature resistance, oil resistance, weather resistance and corrosion resistance of acrylate rubber, but also has excellent compression Resilience and stretch properties.

Description

technical field [0001] The invention relates to a high-performance acrylate rubber seal and a preparation method thereof, in particular to a sliding crosslinked network acrylate rubber seal and a preparation method thereof, belonging to the technical field of sealing. Background technique [0002] Acrylate rubber refers to a type of high-temperature oil-resistant special rubber obtained by free-radical copolymerization of acrylate as the main monomer and a small amount of vulcanization point monomer. It has heat resistance second only to fluororubber and silicone rubber, and fluororubber, Chlorine ether rubber has the same oil resistance as nitrile rubber, and is widely used in automotive sealing parts that require heat and oil resistance. However, due to the poor compression resilience and tensile properties of acrylate rubber, it is difficult to meet the application requirements of some high-end fields. [0003] Polyrotaxane is a host-guest supramolecular material formed ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/04C08L87/00C08K13/02C08K5/19C08K5/18C08K5/43C08K5/09C08K3/36C08K3/34
Inventor 陈尚彪张丽
Owner HUANGSHAN SHANGYI RUBBER & PLASTIC PRODS
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