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Low odor passenger car rubber seal

A technology for rubber sealing strips and passenger cars, applied in the field of rubber modification, can solve the problems of unpleasant smell, breakage, ozone aging resistance, etc., and achieve the effects of reducing the dosage, improving the odor level and increasing the vulcanization speed.

Active Publication Date: 2022-03-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a low-odor passenger car rubber seal, which can meet the conventional properties of the seal, such as hardness, tensile strength, elongation at break, compression set, ozone aging resistance, and atmospheric resistance. Aging and low temperature performance, and can solve the problems of low tear strength, bad smell and strong smell of EPDM rubber alone

Method used

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  • Low odor passenger car rubber seal
  • Low odor passenger car rubber seal
  • Low odor passenger car rubber seal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh 60 parts of HVPBR glue solution and mix with 40 parts of BIR glue solution, then add 25 parts of cashew nut shell oil, stir, and dry by steam condensation. After the compound rubber was masticated in the mixer for 1 minute, small materials such as zinc oxide and stearic acid were added for 1 minute, and 50 parts of carbon black were weighed for 3 minutes, discharged, and sulfur and accelerator were added to the mixer for 5 minutes. The back piece is left, and after 16 hours of parking, the rubber composite material is obtained by vulcanization.

Embodiment 2

[0030] Weigh 70 parts of HVPBR rubber and mix with 30 parts of BIR glue, then add 5 parts of cashew nut shell oil, stir, and dry by steam condensation. After the compound rubber was masticated in the mixer for 1 minute, small materials such as zinc oxide and stearic acid were added for 1 minute, and 50 parts of carbon black were weighed for 3 minutes, discharged, and sulfur and accelerator were added to the mixer for 5 minutes. After 24 hours of parking, the rubber composite material was obtained by vulcanization.

Embodiment 3

[0032] Weigh 80 parts of HVPBR rubber and mix with 20 parts of BIR glue, then add 30 parts of cashew nut shell oil, stir, and dry by steam condensation. After the compound rubber was masticated in the mixer for 1 minute, small materials such as zinc oxide and stearic acid were added for 1 minute, and 50 parts of carbon black were weighed for 3 minutes, discharged, and sulfur and accelerator were added to the mixer for 5 minutes. The back piece is put down, parked for 20 hours, and then vulcanized to obtain a rubber composite material.

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Abstract

The invention relates to a low-odor passenger car rubber sealing strip, which belongs to the technical field of rubber modification. The low-odor passenger car rubber sealing strip of the present invention uses high-vinyl polybutadiene rubber and butadiene rubber as raw materials, and uses cashew nut shell oil as a plasticizer to prepare oil-extended rubber, and then the oil-extended rubber is prepared. The rubber is kneaded and vulcanized to obtain a low-odor passenger car rubber seal. In the invention, the high vinyl polybutadiene rubber and the butadiene rubber are compounded, and then filled with cashew nut shell oil, so that the vulcanization speed is improved, the consumption of sulfur and vulcanization accelerator is reduced, and the prepared sealing strip not only meets the conventional performance requirements, but also has high vulcanization speed. The odor level is significantly improved compared to EPDM rubber seals.

Description

technical field [0001] The invention relates to a low-odor passenger car rubber sealing strip, which belongs to the technical field of rubber modification. Background technique [0002] Rubber seals are products with high technical content in auto parts, and are also important products in rubber sealing strip products. In recent years, with the rapid development of my country's automobile industry, especially the variety and production of cars are increasing. As a necessary part of the automotive industry, automotive weather strips must not only meet the requirements of sealing and appearance, but also the impact of the odor it emits on the air quality in the car cannot be ignored. The material of sealing strip products generally includes dense EPDM rubber, foamed EPDM rubber, etc. EPDM rubber is a kind of saturated rubber, the main chain is composed of chemically stable saturated hydrocarbons, only contains unsaturated double bonds in the side chain, no polar substituents...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/00C08L91/00C08K13/02C08K3/04C08K3/22C08K5/09C08K3/06C08K5/3437
CPCC08L9/00C08L2205/025C08L2205/03C08K2003/2296C08L91/00C08K13/02C08K3/04C08K3/22C08K5/09C08K3/06C08K5/3437
Inventor 王晓敏王晶张新华裴晓静王秀丽刘浩刘容德李静高磊
Owner CHINA PETROLEUM & CHEM CORP
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