High-flame-retardation chloroprene rubber sealing gasket and its preparation method

A technology of neoprene and gaskets, which is applied in the field of gaskets, can solve problems such as burning, and achieve the effects of improving flame retardancy and corrosion resistance, small friction coefficient, and high flame retardancy

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

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Problems solved by technology

However, with the development of the automobile industry, the existing gaskets are far from meeting the

Method used

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  • High-flame-retardation chloroprene rubber sealing gasket and its preparation method

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[0014] Example

[0015] A kind of high flame retardant neoprene gasket, the weight parts of its constituent materials are: neoprene CR121 140 parts, Butyl rubber CBK139 12 parts, 22 parts of chlorohydrin rubber H75, 16 parts of SG-5 PVC resin, 4 parts of acetyl tris(2-ethylhexyl) citrate, 4 parts of dioctyl epoxytetrahydrophthalate, decane 2 parts of diacid propylene glycol polyester, Fatty alcohol polyoxyethylene ether sodium sulfate 2 parts, 1.5 parts of sulfur, 4 parts of zinc oxide, 2 parts of calcium stearate, 1 part of zinc stearate, 8 parts of zinc borate, 36 parts of nano attapulgite, 42 parts of nano sepiolite, 30 parts of nano silica Parts, 15 parts of carbon black N339, 8 parts of precipitation white carbon black, 1.5 parts of aluminate coupling agent DL-411, 0.6 parts of anti-ultraviolet agent, 1.6 parts of crosslinking agent TAIC, 3-aminopropyltrimethoxysilane 1.5 parts, antioxidant OD 1.5 parts, antioxidant ODA 1 part, antioxidant TPPD 1.5 parts, accelerator Na-2...

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Abstract

The invention discloses a high-flame-retardation chloroprene 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, 20-25 parts of chlorhydrin rubber H75, 10-20 parts of an SG-5 PVC resin, 3-5 parts of tri(2-ethylhexyl)acetocitrate, 3-5 parts of di(2-ethylhexyl)-4,5-epoxy tetrahydrophthalate and 1-2 parts of propylene glycol sebacate. The sealing gasket has the advantages of good high temperature resistance, good sealing performance, flame retardation grade reaching UL94-V0 or higher, good corrosion resistance, realization of long-term working in mediums comprising acids, alkalis, oil and the like, small volume and hardness changes, no adhesion on the metal surface, small friction coefficient, good abrasion resistance, good combination flexibility with a sealing surface, good weather ageing and ozone ageing resistances, durability and the like.

Description

technical field [0001] The invention relates to a sealing gasket, in particular to a highly flame-retardant chloroprene rubber sealing gasket and a preparation method thereof. Background technique [0002] There are many places that need to be sealed on the car engine, and the conditions are relatively harsh. When the engine is working normally, the temperature is very high. The gasket must at least meet the requirements of high temperature resistance and flame retardancy, otherwise it will affect the normal operation of the engine. However, with the development of the automobile industry, the existing gaskets are far from meeting the requirements and are often burnt. Therefore, it is imperative to develop a highly flame-retardant gasket. Contents of the invention [0003] The object of the present invention is to provide a high flame-retardant chloroprene rubber gasket and a preparation method thereof for the deficiencies of the prior art. [0004] The technical scheme t...

Claims

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Application Information

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IPC IPC(8): C08L11/00C08L23/22C08L71/03C08L27/06C08K13/06C08K9/04C08K9/02C08K3/34C08K3/36C08K3/04C08K3/22C08K3/06C08K5/098C08K3/38
Inventor 胡光荣
Owner ANHUI RONGDA VALVE
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