High-temperature-resistant rubber sealing ring for automobiles

A technology of rubber sealing ring and high temperature resistance, applied in the field of rubber, can solve the problems of poor heat resistance and chemical corrosion resistance of the sealing ring, scrapped rubber sealing ring, slow vulcanization speed, etc., and achieve superior aging resistance and weather aging performance , Prevent foaming and improve oil resistance

Active Publication Date: 2014-10-08
TONGLING SANSHENG ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

EPDM rubber has the characteristics of aging resistance, corrosion resistance, water vapor resistance, hot water resistance and low density and high filling. It is already an important material for making sealing rings, but the fly in the ointment is that EPDM rubber is not oil resistant. , Poor adhesion with other materials, slow vulcanization speed, there are certain deficiencies in the seal rings made, the heat resistance and chemical corrosion resistance of the seal rings in the existing market are generally poor, which will easily lead to premature aging and loss of function , leading to the scrapping of the rubber sealing ring and increasing the cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Its preparation of high-temperature-resistant rubber sealing ring for automobiles described in the present invention comprises the following steps:

[0030] S1. Heat the mill to 30° C., set the roll distance to 0.3 mm, add EPDM rubber and chloroprene rubber into the mill at the same time according to the parts by weight of Example 1 in Table 1, and masticate for 14 minutes, and then After degumming, pressing, unloading, cooling to room temperature and parking for 4.3 hours to obtain a plasticized rubber;

[0031] S2. Heat the mill to 30°C, set the roller pitch to 0.6mm, add the primary plasticized rubber obtained in S1 to the mill and masticate for 11 minutes, and then perform rubber removal, tablet pressing, tableting, cooling to room temperature and Parked for 3.5h to obtain secondary plasticizing rubber;

[0032] S3, the temperature of the open mill is set to room temperature, and the roll distance is set to 0.8mm, the secondary plasticizing rubber obtained in S2 is...

Embodiment 2

[0037] Its preparation of high-temperature-resistant rubber sealing ring for automobiles described in the present invention comprises the following steps:

[0038] S1. Heat the mill to 35° C., set the roll distance to 0.7 mm, add EPDM rubber and chloroprene rubber into the mill at the same time according to the parts by weight of Example 2 in Table 1, and masticate for 12 minutes, and then After degumming, pressing, unloading, cooling to room temperature and parking for 4.7 hours to obtain a plasticized rubber;

[0039] S2. Heat the mill to 27°C, set the roller distance to 0.4 mm, add the primary plasticized rubber obtained in S1 to the mill for 19 minutes, and then perform rubber removal, tablet compression, tablet removal, cooling to room temperature and Parked for 4.2h to obtain secondary plasticizing rubber;

[0040] S3, the temperature of the mill is set to room temperature, and the roll distance is set to 0.5mm, the secondary plasticizing rubber obtained in S2 is added ...

Embodiment 3

[0045] Its preparation of high-temperature-resistant rubber sealing ring for automobiles described in the present invention comprises the following steps:

[0046] S1. Heat the mill to 33°C, set the roller distance to 0.5mm, add EPDM rubber and chloroprene rubber into the mill at the same time and masticate for 13 minutes, and then go through debinding, tableting, tableting, and cooling to room temperature and parked for 4.5h to obtain a masticated rubber;

[0047] S2. Heat the mill to 28°C, set the roller distance to 0.5 mm, add the primary plasticized rubber obtained in S1 to the mill for 18 minutes, and then perform rubber removal, tablet compression, tablet removal, cooling to room temperature and Park for 4h to obtain secondary plasticizing rubber;

[0048] S3, the temperature of the mill is set to room temperature, and the roll distance is set to 0.6mm, the secondary plasticizing rubber obtained in S2 is added to the mill for mastication for 16min, and then through debi...

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PUM

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Abstract

The invention discloses a high-temperature-resistant rubber sealing ring for automobiles. The high-temperature-resistant rubber sealing ring comprises the following raw materials in parts by weight: 70-90 parts of ethylene-propylene-diene-terpolymer rubber, 10-30 parts of chloroprene rubber, 1-4 parts of an anti-aging agent, 0.8-1.5 parts of active zinc oxide, 0.2-0.4 part of magnesium oxide, 0.5-1.0 part of calcium oxide, 0.6-1.5 parts of butyltin mercaptide, 30-40 parts of modified kaolin, 10-15 parts of magnesium methacrylate, 1-3 parts of a promoter, 6-10 parts of soybean oil, 1-2 parts of ethyl methacrylate, 40-80 parts of paraffin oil, 0.2-0.5 part of triallyl phosphate, 1.0-1.5 parts of a crosslinking agent BIBP, 0.5-1.2 parts of an assistant crosslinking agent TAIC, 0.3-0.5 part of microcrystalline wax, 2-3 parts of a vulcanizing agent and 0.5-1 part of phthalic anhydride. The sealing ring disclosed by the invention has strong weather resistance, corrosion resistance and ozone resistance, and can be suitable for being used as the high-temperature-resistant rubber sealing ring for the automobiles.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to a high-temperature-resistant rubber sealing ring for automobiles. Background technique [0002] Sealing ring is an important component of rubber products. It is currently used in the three major fields of automobiles, electrical appliances, electronics, and office equipment, and is also widely used in high-tech fields such as construction, medical, food industry, aviation, and aerospace. Rubber materials in different fields needs to be of a different nature. [0003] The sealing ring should have high resilience, moderate hardness, and small compression permanent deformation; it has good mechanical properties: such as tensile strength, constant tensile strength, and elongation at break reach certain standards; it has wear resistance and tear resistance Strong resistance; stable chemical properties, strong ability to adapt to working medium, not easy to swell, decompose and harden;...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L11/00C08K13/06C08K3/22C08K5/58C08K3/34C08K5/521
CPCC08L23/16C08L2201/08C08L2205/025C08L2205/035C08L11/00C08L91/06C08K13/06C08K9/04C08K9/08C08K3/346C08K2003/2296C08K2003/222C08K2003/2206C08K5/58C08K5/521
Inventor 杨存俊
Owner TONGLING SANSHENG ELECTRONICS
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