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Sealing ring rubber material non-sticking to die during application

A technology of rubber materials and sealing rings, applied in the field of rubber materials for sealing rings, can solve problems such as low tear resistance, poor wet skid resistance, and poor adhesion, and achieve good fluidity, superior performance, and cost savings Effect

Inactive Publication Date: 2013-12-18
CGP WUHU SEALING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its tear resistance is low, its wet skid resistance is not good, and its adhesion is not as good as natural rubber and styrene-butadiene rubber, so it needs to be studied and improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] A rubber material for a sealing ring that does not stick to a mold when used, is characterized in that:

[0015] It is made from the following raw materials in parts by weight:

[0016] Nitrile rubber raw rubber 3465 100, antioxidant RD 1.5, antioxidant MB 1, stearic acid 1, sulfur powder 1, microcrystalline wax 2, zinc oxide 5, chlorinated paraffin wax 1, processing aid WB212 1.2, white carbon black 40, butadiene rubber 32, titanium dioxide 18, carbon black N330 0.2, nano-montmorillonite 8, silane coupling agent SI-69 8, epoxy soybean oil 30, accelerator D 1, accelerator TETD 1, accelerator DM 2, Alkyl phenolic resin 6, cashew nut shell liquid 4.

[0017] The rubber material used for the sealing ring of a non-stick mold when used, the preparation process is:

[0018] First by weight parts of nitrile rubber raw rubber 3465, anti-aging agent RD, anti-aging agent MB, stearic acid, sulfur powder, microcrystalline wax, zinc oxide, chlorinated paraffin, processing aid WB21...

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PUM

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Abstract

The invention discloses a sealing ring rubber material non-sticking to a die during application. The sealing ring rubber material is prepared from the raw materials of raw nitrile rubber 3465, antioxidant RD, antioxidant MB, stearic acid, sulfur powder, microcrystalline wax, zinc oxide, chlorinated paraffin, processing aid WB212, alkyl phenolic resin, cashew shell oil, etc. The sealing ring rubber material provided in the invention has good fluidity and does not stick to dies; the material is used for fabricating sealing rings, having the advantages of conservation of cost and excellent performance.

Description

technical field [0001] The invention relates to the field of sealing ring materials, in particular to a rubber material for sealing rings which does not stick to a mold when used. Background technique [0002] Nitrile rubber is also called butadiene-acrylonitrile rubber, referred to as NBR, with an average molecular weight of about 700,000. Off-white to light yellow massive or powdery solid, relative density 0.95-1.0. The glass transition temperature of nitrile rubber with 26% acrylonitrile content is Tg=-52°C, and the embrittlement temperature Tb=-47°C, while the glass transition temperature of nitrile rubber with 40% acrylonitrile content is Tg=-22°C. Solubility parameter δ=8.9~9.9, soluble in ethyl acetate, butyl acetate, chlorobenzene, methyl ethyl ketone, etc. Nitrile rubber has excellent oil resistance, its oil resistance is second only to polysulfide rubber and fluorine rubber, and it has excellent wear resistance and air tightness. The disadvantage of NBR is that ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/02C08L9/00C08L61/06C08K13/02C08K5/09C08K3/06C08K3/22C08K3/36C08K3/04C08K3/34C08K5/54C08K5/1515B29B7/28B29B7/72
Inventor 邵仁杰王建平
Owner CGP WUHU SEALING