Reclaimed nitrile rubber sealing ring material

A technology of nitrile butadiene regenerated rubber and nitrile rubber, which is applied in the field of sealing ring materials, can solve the problems of nitrile rubber such as poor ozone resistance and electrical insulation performance, reduced elasticity and cold resistance, and achieve optimized formula raw materials and excellent performance , cost-saving effect

Inactive Publication Date: 2012-10-17
CGP WUHU SEALING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The performance of nitrile rubber is affected by the content of acrylonitrile. As the content of acrylonitrile increases, the tensile strength, heat resistance, oil resistance, air tightness and hardness increase, but the elasticity and cold resistance decrease.
Nitrile rubber has poor ozone resistance and electrical insulation properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of nitrile regenerated rubber sealing ring material,

[0022] It is made from the following raw materials in parts by weight:

[0023] Nitrile rubber 3345 50, nitrile regenerated rubber 20, antioxidant SP 2, antioxidant BLE 1, stearic acid 1, sulfur powder 0.8, palm wax 1.2, zinc oxide 6, processing aid WB16 1.2, carbon black N550 60, Carbon black N330 35, methyl pentachlorostearate 40, accelerator TMTD 1, accelerator TETD 1, accelerator DM 2, nano calcium carbonate 4, alkyl resorcinol formaldehyde resin 3, maleic anhydride 3 , Plasticizer 4.

[0024] The plasticizer is obtained by preparing and modifying the following raw materials in parts by weight:

[0025] Tributyl citrate 10

[0026] n-Butanol 3

[0027] Polyethylene glycol 5

[0028] Chlorinated paraffin 20

[0029] Nano silica 0.2

[0030] Nano barium oxide 0.2

[0031] Glycerol triglyceride 18; its preparation method is to heat and emulsify the above components, and pack them.

[0032] The prepa...

Embodiment 2

[0036] A kind of butyronitrile regenerated rubber seal ring material, it is made by the raw material of following weight part:

[0037] Nitrile rubber 3345 50, nitrile regenerated rubber 20, antioxidant SP 2, antioxidant BLE 1, stearic acid 1, sulfur powder 0.8, palm wax 1.2, zinc oxide 6, processing aid WB16 1.2, carbon black N550 60, Carbon black N330 35, methyl pentachlorostearate 40, accelerator TMTD 1, accelerator TETD 1, accelerator DM 2, nano calcium carbonate 4, alkyl resorcinol formaldehyde resin 3, maleic anhydride 3 , Plasticizer 4.

[0038] The plasticizer is tributyl citrate; its preparation method is to heat, emulsify and pack the above components.

[0039] The preparation process is as follows: after fully mixing nitrile rubber and nitrile regenerated rubber according to the weight part, then adding other raw materials according to the weight part and fully mixing to obtain the mixed rubber after vulcanization, and then processing and molding to obtain the prod...

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PUM

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Abstract

The invention discloses a reclaimed nitrile rubber sealing ring material which is prepared from nitrile rubber 3345, reclaimed nitrile rubber, antioxidant SP, antioxidant MB, stearic acid, sulfur powder, palm wax, zinc oxide, processing aid WB16, carbon black N550, carbon black N330, methylpentachlorostearate, promoter TMTD, promoter TETD, promoter DM, nanometer calcium carbonate, modified acrylate, alkyl resorcinol formaldehyde resin, maleic anhydride, a plasticizer, etc. According to the invention, reclaimed nitrile rubber is used as a raw material and formulated raw materials are optimized so as to prepare the reclaimed nitrile rubber sealing ring material with excellent performance, good high temperature resistance and high hardness, which enables cost to be saved.

Description

technical field [0001] The invention relates to the field of seal ring materials, in particular to a nitrile regenerated rubber seal ring material. 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 it is not resistant to ozone and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08K13/02C08K5/09C08K3/02C08K3/22C08K3/04C08K5/101C08K3/26C08K5/11C08K5/05C08K3/36
Inventor 邵仁杰王建平
Owner CGP WUHU SEALING
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