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High-temperature-resistant rubber sealing gasket and preparation method thereof

A technology of rubber gasket and high temperature resistance, applied in the field of sealing materials, can solve problems such as poor oil resistance of gaskets, achieve good flame retardant effect, promote uniform dispersion, excellent high temperature resistance and oil resistance.

Active Publication Date: 2020-02-11
XICHUAN COUNTY POWER BUREAU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the sealing gasket obtained by this patent has poor oil resistance

Method used

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  • High-temperature-resistant rubber sealing gasket and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A high-temperature-resistant rubber sealing gasket is prepared from the following raw materials in parts by weight:

[0024] 40 parts of acrylate rubber, 25 parts of natural rubber, 15 parts of tetrafluoroethylene-hexafluoropropylene copolymer, 10 parts of boron fiber, 8 parts of nano sepiolite, 5 parts of flame retardant, 15 parts of methyl silicone oil, plasticizer 12 parts, 1 part of antioxidant, 1 part of bis-pentasulfurizing agent, 2 parts of coupling agent and 0.5 part of accelerator.

[0025] The flame retardant is flame retardant PDSPB.

[0026] Described plasticizer is di-isooctyl phthalate.

[0027] Described antioxidant is antioxidant 1010.

[0028] The coupling agent is silane coupling agent KH550.

[0029] The accelerator is triallyl isocyanurate.

[0030] The preparation method of above-mentioned high-temperature-resistant rubber gasket, comprises the following steps:

[0031] (1) Put acrylate rubber, natural rubber, and tetrafluoroethylene-hexafluoro...

Embodiment 2

[0035] A high-temperature-resistant rubber sealing gasket is prepared from the following raw materials in parts by weight:

[0036] 42 parts of acrylate rubber, 26 parts of natural rubber, 17 parts of tetrafluoroethylene-hexafluoropropylene copolymer, 12 parts of boron fiber, 10 parts of nano sepiolite, 5 parts of flame retardant, 17 parts of methyl silicone oil, plasticizer 14 parts, 1.1 parts of antioxidant, 1 part of double pentasulfurizing agent, 3 parts of coupling agent and 1 part of accelerator.

[0037] The flame retardant is flame retardant PDSPB.

[0038] Described plasticizer is dioctyl phthalate.

[0039] Described antioxidant is antioxidant CA.

[0040] The coupling agent is silane coupling agent KH560.

[0041] The accelerator is triallyl isocyanurate.

[0042] The preparation method of above-mentioned high-temperature-resistant rubber gasket, comprises the following steps:

[0043] (1) Put acrylate rubber, natural rubber, and tetrafluoroethylene-hexafluorop...

Embodiment 3

[0047] A high-temperature-resistant rubber sealing gasket is prepared from the following raw materials in parts by weight:

[0048] 43 parts of acrylate rubber, 28 parts of natural rubber, 19 parts of tetrafluoroethylene-hexafluoropropylene copolymer, 14 parts of boron fiber, 10 parts of nano sepiolite, 6 parts of flame retardant, 18 parts of methyl silicone oil, plasticizer 16 parts, 1.2 parts of antioxidant, 2 parts of double pentasulfurizing agent, 5 parts of coupling agent and 1 part of accelerator.

[0049] The flame retardant is flame retardant PDSPB.

[0050] Described plasticizer is dibutyl phthalate.

[0051] Described antioxidant is antioxidant 168.

[0052] The coupling agent is silane coupling agent KH570.

[0053] The accelerator is triallyl isocyanurate.

[0054] The preparation method of above-mentioned high-temperature-resistant rubber gasket, comprises the following steps:

[0055] (1) Put acrylate rubber, natural rubber, and tetrafluoroethylene-hexafluor...

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Abstract

The invention discloses a high-temperature-resistant rubber sealing gasket and a preparation method thereof. The sealing gasket is prepared from, by weight, 40-50 parts of acrylate rubber, 25-40 partsof natural rubber, 15-25 parts of a tetrafluoroethylene-hexafluoropropylene copolymer, 10-20 parts of a boron fiber, 8-15 parts of nano-sepiolite, 5-10 parts of a flame retardant, 15-30 parts of methyl silicone oil, 12-25 parts of a plasticizer, 1-1.5 parts of an antioxidant and 1-5 parts of a vulcanizing agent 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane, 2-8 parts of a coupling agent and 0.5-3 parts of an accelerant. The obtained high-temperature-resistant rubber sealing gasket has the advantages of proper hardness, high strength, excellent oil and high-temperature resistance, non-compression and good resilience.

Description

technical field [0001] The invention belongs to the technical field of sealing materials, and in particular relates to a high-temperature-resistant rubber sealing gasket and a preparation method thereof. Background technique [0002] In recent years, more and more high-temperature pressure pipelines are used for oil pipelines. Rubber gaskets are often used to seal between high-temperature flanges on pipelines. Rubber gaskets are required to have excellent heat-aging resistance, oil resistance, and high-temperature resistance. Under the conditions of use, the sealing effect is poor, and a gap is easily formed between the rubber pad and the flange, resulting in loosening and leakage problems at the pipe connection. Therefore, it is of great significance to develop a high-performance high-temperature-resistant rubber gasket. [0003] The Chinese invention patent with the notification number CN102993682B discloses a high-performance epichlorohydrin rubber gasket. The parts by w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/04C08L7/00C08L27/18C08L83/04C08L85/02C08K13/04C08K7/06C08K7/26
CPCC08K2201/011C08L33/04C08L2201/02C08L2201/08C08L2205/035C08L7/00C08L27/18C08L83/04C08L85/02C08K13/04C08K7/06C08K7/26
Inventor 王晓张清沙淼李晨贺张丰林杨志全胡晓波王媛媛
Owner XICHUAN COUNTY POWER BUREAU
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