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Highly oil-resistant chloroprene rubber sealing gasket and preparation method thereof

A neoprene rubber and gasket technology, applied in the field of gaskets, can solve the problems that the gasket can not meet the requirements, the material is not easy to remove, the adhesion is small, etc., and achieves excellent effects, good weathering and ozone aging resistance, and compression. Good effect of sex and resilience

Inactive Publication Date: 2013-03-27
ANHUI RONGDA VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the adhesion between the two is too small, the oil cannot be sealed; if it is too large, the material will not be easily removed (polysulfide is an example), which will affect the next disassembly
However, with the development of the automobile industry, the existing gaskets are far from meeting the requirements

Method used

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  • Highly oil-resistant chloroprene rubber sealing gasket and preparation method thereof

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Embodiment

[0015] A kind of high oil-resistant neoprene sealing gasket, the parts by weight of its raw materials are: 138 parts of neoprene rubber CR121, 22 parts of chlorohydrin rubber H45, 15 parts of SG-2 type PVC resin, acetyl citrate tris(2-ethyl 3 parts of hexyl) ester, 4 parts of dioctyl epoxy tetrahydrophthalate, 4 parts of dibutyl maleate, 2 parts of fatty alcohol polyoxyethylene ether sodium sulfate, 36 parts of nano clay, carbon black 32 parts of N220, 35 parts of nano calcium carbonate powder, 1.5 parts of isopropyl dioleic acid acyloxy (dioctyl phosphate acyloxy) titanate, 2.5 parts of antioxidant 1035, 1.6 parts of antioxidant RD, 2- 1.8 parts of mercaptobenzimidazole, 2 parts of accelerator Na-22, 3 parts of accelerator DM, 4 parts of sulfur, 4 parts of zinc oxide, 5 parts of rhine wax, 2 parts of lubricant TR121, and 2 parts of modified tree ash.

[0016] Wherein, the modified tree ashes are prepared by the following method: first soak the tree ashes with 12% hydrogen per...

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Abstract

The invention discloses a highly oil-resistant chloroprene rubber sealing gasket comprising the following raw materials in parts by weight: 35-145 parts of chloroprene rubber CR1211, 20-25 parts of epichlorohydrin rubber, 10-20 parts of SG-2 type PVC (Polyvinyl Chloride) resin, 2-5 parts of tri(2-ethylhexyl)acetocitrate, 3-5 parts of dioctyl epoxy tetrahydrophthalate, 3-5 parts of dibutyl maleate, 1-2 parts of sodium alcohol ether sulphate, 30-40 parts of nano argil, 30-35 parts of carbon black N220, 30-35 parts of nano calcium carbonate powder and the like. The chloroprene rubber sealing gasket has excellent oil resistance and solvent resistance, is capable of satisfying the sealing requirement on an engine sump, and is easy to peel after being solidified, and cleanable and repairable without affecting dismounting and repairing.

Description

technical field [0001] The invention relates to a gasket, in particular to a highly oil-resistant neoprene gasket and a preparation method thereof. Background technique [0002] There are many places where oil seals are required on automobiles, and the conditions are relatively harsh. Oil-resistant gaskets must meet at least two conditions: one is oil resistance. If the oil resistance is not good, it will inevitably leak oil after long-term use. The second is to seal the oil without leaking. It is required to have proper adhesion between the sealing material and the sealed part, and it is required that the sealing material itself has a certain strength. If the adhesion between the two is too small, the oil cannot be sealed, and if it is too large, the material will not be easily removed (polysulfide glue is an example), which will affect the next disassembly. However, with the development of the automobile industry, the existing gaskets are far from meeting the requiremen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L11/00C08L71/00C08L27/06C08K13/06C08K3/34C08K3/04C08K3/22C08K3/26
Inventor 胡光荣
Owner ANHUI RONGDA VALVE
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