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Rubber seal for automobile rotation shaft oil seal

A technology of rubber seals and rotating shafts, applied in the field of rubber seals, can solve problems such as insufficient tensile strength and elongation at break, leakage, etc., to achieve excellent tensile properties, avoid damage, and good mutual solubility.

Inactive Publication Date: 2019-01-18
NINGGUO RUIPUSLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current rubber seals still have technical problems of insufficient tensile strength and elongation at break, which are likely to cause leakage, which needs to be solved urgently

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A rubber seal for an automobile rotary shaft oil seal, the raw materials of which include: 100kg of nitrile silicone rubber, 80kg of neoprene, 20kg of nano-silica composite, 20kg of talcum powder, 16kg of sepiolite powder, 5kg of plasticizer, tert-butyl 0.2 kg of hydrogen peroxide, 1 kg of tetramethylthiuram disulfide, 0.6 kg of N-cyclohexyl-2-benzothiazole sulfenamide, 0.2 kg of zinc oxide, and 1.5 kg of anti-aging agent.

[0018] The plasticizer consists of disproportionated rosin, dioctyl phthalate, trimethylphenyl phosphoric acid and stearic acid in a weight ratio of 1.2:0.6:2:0.1. The anti-aging agent consists of anti-aging agent ODA and anti-aging agent 8PPD in a weight ratio of 1.5:1.

[0019] The nano-silica composite was prepared by the following process: 25kg of humic acid, 60kg of sodium hydroxide solution with a concentration of 1.12mol / L was stirred for 1 hour, the stirring temperature was 85°C, the adjustment system was neutral, and 20kg of nano-titanium d...

Embodiment 2

[0021] A rubber seal for an automobile rotary shaft oil seal, its raw materials include: 150kg of nitrile silicone rubber, 40kg of neoprene, 40kg of nano-silica composite, 12kg of talcum powder, 25kg of sepiolite powder, 3kg of plasticizer, tert-butyl 0.8 kg of hydrogen peroxide, 0.2 kg of tetramethylthiuram disulfide, 1.2 kg of N-cyclohexyl-2-benzothiazole sulfenamide, 0.1 kg of zinc oxide, and 3.5 kg of anti-aging agent.

[0022] The plasticizer consists of disproportionated rosin, dioctyl phthalate, trimethylphenyl phosphoric acid, and stearic acid in a weight ratio of 0.5:1.2:1:0.8. The anti-aging agent consists of anti-aging agent ODA and anti-aging agent 8PPD in a weight ratio of 0.6:2.

[0023] The nano-silica composite was prepared by the following process: 14kg of humic acid, 100kg of sodium hydroxide solution with a concentration of 0.65mol / L was stirred for 2 hours, the stirring temperature was 66°C, the adjustment system was neutral, and 40kg of nano-titanium dioxi...

Embodiment 3

[0025] A rubber seal for an automobile rotary shaft oil seal, its raw materials include: 120kg of nitrile silicone rubber, 70kg of neoprene rubber, 25kg of nano-silica composite, 18kg of talc powder, 18kg of sepiolite powder, 4.5kg of plasticizer, tert-butyl Hydrogen peroxide 0.4kg, tetramethylthiuram disulfide 0.8kg, N-cyclohexyl-2-benzothiazole sulfenamide 0.8kg, zinc oxide 0.18kg, antioxidant 2kg.

[0026] The plasticizer consists of disproportionated rosin, dioctyl phthalate, trimethylphenyl phosphoric acid, and stearic acid in a weight ratio of 1:0.8:1.8:0.2. The anti-aging agent consists of anti-aging agent ODA and anti-aging agent 8PPD in a weight ratio of 1.2:1.2.

[0027] The nano-silica composite is prepared by the following process: 22kg humic acid, 70kg sodium hydroxide solution with a concentration of 1mol / L is stirred for 1.2h, the stirring temperature is 80°C, the adjustment system is neutral, and 25kg nano-titanium dioxide, 1.6kg Stir with polyethylene glycol ...

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Abstract

The invention discloses a rubber seal for an automobile rotation shaft oil seal. The rubber seal is prepared from the following raw materials in parts by weight: 100 to 150 parts of nitrile silicone rubber, 40 to 80 parts of chloroprene rubber, 20 to 40 parts of a nano silica compound, 12 to 20 parts of talcum powder, 16 to 25 parts of sepiolite powder, 3 to 5 parts of a plasticizer, 0.2 to 0.8 part of tert-butyl hydroperoxide, 0.2 to 1 part of tetramethyl thiuram disulfide, 0.6 to 1.2 parts of N-cyclohexyl-2-benzothiazole sulfonamide, 0.1 to 0.2 part of zinc oxide and 1.5 to 3.5 parts of an antiager. The nano silica compound is prepared by adopting the following processes: stirring humic acid and a sodium hydroxide solution, adjusting a system to be neutral, adding nano titanium dioxide and polyethylene glycol 400 for stirring, adding sodium carboxymethyl cellulose and epoxy chloropropane, raising the temperature, stirring, filtering, washing and drying to obtain the nano silica compound.

Description

technical field [0001] The invention relates to the technical field of rubber seals, in particular to a rubber seal for an automobile rotary shaft oil seal. Background technique [0002] With the rapid development of the automobile industry, users have higher and higher requirements for engine reliability and sealing, and as the engine speed continues to increase, the oil seals used, especially the rotating shaft oil seals, are subjected to increasingly harsh conditions. . Rubber seals for oil seals are a product with high technical content, and it is still in its infancy in my country, but it has been gradually applied to domestic mid-to-high-end cars. However, there are still technical problems of insufficient tensile strength and elongation at break in rubber seals at present, which are easy to cause leakage, which needs to be solved urgently. Contents of the invention [0003] Based on the technical problems in the background technology, the present invention propose...

Claims

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Application Information

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IPC IPC(8): C08L83/08C08L11/00C08L93/04C08L1/28C08K13/02C08K3/36C08K3/34C08K3/22C08K5/12
CPCC08K2003/2241C08K2003/2296C08K2201/011C08L83/08C08L2205/035C08L11/00C08L93/04C08L1/286C08K13/02C08K3/36C08K3/34C08K3/346C08K3/22C08K5/12
Inventor 李明燕
Owner NINGGUO RUIPUSLS
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