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Chloroprene rubber/butyl rubber sealing gasket and its preparation method

A technology of butyl rubber and neoprene rubber, applied in the field of gaskets, can solve the problems of unsatisfactory sealing effect, poor wear resistance, low strength, etc., and achieve the effects of excellent effect, good wear resistance and good corrosion resistance.

Inactive Publication Date: 2013-03-20
ANHUI RONGDA VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing rubber gaskets have defects such as unsatisfactory sealing effect, poor wear resistance, and low strength, which are far from meeting the actual requirements.

Method used

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  • Chloroprene rubber/butyl rubber sealing gasket and its preparation method

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Embodiment

[0015] A neoprene / butyl rubber sealing gasket, the parts by weight of its raw materials are: 138 parts of neoprene CR121, 15 parts of butyl rubber CBK139, 12 parts of bromobutyl rubber 1066, 4 parts of propylene glycol sebacate 5 parts, 5 parts of n-butyl methacrylate, 2 parts of di-n-octyl tin bis-thioglycolate, 2 parts of zinc stearate, 3 parts of zinc oxide, 3 parts of magnesium oxide, 8 parts of light calcium carbonate, nano recrystallization 42 parts of stone powder, 22 parts of nano-bentonite, 1.5 parts of isopropyl dioleate (dioctyl phosphate acyloxy) titanate, 1.8 parts of antioxidant 1035, 3-aminopropyl trimethoxysilane 1.2 parts, accelerator TETD 1.2 parts, accelerator CBS 0.8 parts, antioxidant NBC 1.5 parts, antioxidant MB 1.5 parts, antioxidant 4010NA 2 parts, modified tree ash 2 parts.

[0016] Wherein, the modified tree ashes are prepared by the following method: first soak the tree ashes with 15% hydrogen peroxide for 3 hours, then wash with deionized water unt...

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Abstract

The invention discloses a chloroprene rubber / butyl rubber sealing gasket. The sealing gasket comprises the following raw materials, by weight, 135-145 parts of chloroprene rubber CR121, 10-15 parts of butyl rubber CBK139, 10-15 parts of brominated butyl rubber 1066, 3-5 parts of propanediol sebacate polyester, 2-5 parts of n-butyl methacrylate, 1-2 parts of imarcaptoacetate dioctyltin and 1-2 parts of zinc stearate. The sealing gasket has the advantages of good high-temperature resistance, good sealing performance, good flame retardation, good corrosion resistance, realization of long-term working in mediums comprising acids, alkalis, oils and the like, small volume and hardness changes, no adhesion on metal surfaces, small friction coefficient, good abrasion resistance, good bonding flexibility with the sealing surface, good weather ageing resistance, good ozone ageing resistance, durability and the like.

Description

technical field [0001] The invention relates to a gasket, in particular to a neoprene / butyl rubber gasket and a preparation method thereof. Background technique [0002] Gasket is a material used for sealing inside machinery, equipment, pipelines, etc. The gaskets currently used are mostly rubber gaskets, which are characterized by high temperature resistance, ozone resistance, natural aging resistance, vacuum resistance, fuel oil resistance, lubricating oil resistance, strong oxidant resistance, chemical resistance and good electrical insulation performance. Widely used in defense industry and civilian industry. However, the existing rubber gaskets have defects such as unsatisfactory sealing effect, poor wear resistance and low strength, which are far from meeting the actual requirements. Therefore researching and developing a kind of high-performance rubber gasket has become the task of top priority. Contents of the invention [0003] The object of the present inventi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L11/00C08L23/22C08L23/28C08L67/02C08K13/06C08K9/02C08K3/26C08K3/04C08K3/22B29C35/02
Inventor 胡光荣
Owner ANHUI RONGDA VALVE
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