Rubber sealing strip and preparation method thereof

Through the use of modified montmorillonite and modified carbon black, the problems of aging and degradation of sealing properties of traditional rubber seal strips are solved, higher performance and lower filler usage are achieved, and production efficiency and product quality are improved.

CN119684720AInactive Publication Date: 2025-03-25青州市博奥炭黑有限责任公司
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Patent Information

Application Number
CN202510222782.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-27
Publication Date
2025-03-25
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Traditional rubber seal strips are prone to aging and deforming during use, resulting in a decrease in sealing performance. The excessive addition of filler will increase production cost and processing difficulty, and reduce sealing performance and service life.

Method used

Modified montmorillonite and modified carbon black are used to improve its compatibility and dispersion through hydrolysis and condensation reactions of oleic acid intercalation and ethyl orthosilicate, reduce the use of fillers, and improve the uniformity and binding force of fillers through ball milling and ultrasonic dispersion.

Benefits of technology

The performance of rubber seal strips is significantly improved, including enhanced tensile strength, heat resistance and aging resistance, improved processing performance and production efficiency, and reduced defective rate and cost.

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Abstract

The present invention discloses a rubber sealing strip and a preparation method thereof, and relates to the technical field of sealing strip production, the rubber sealing strip comprises the following raw materials: base rubber, modified montmorillonite, modified carbon black, a plasticizer, a vulcanizing agent, an anti-aging agent and other assistants, the modified montmorillonite is subjected to oleic acid modification, and tetraethoxysilane is subjected to hydrolysis and condensation reaction to obtain the rubber sealing strip. A silicon dioxide coating layer can be formed on the surface of the carbon black, and the lamellar structure of the oleic acid modified montmorillonite and the silicon dioxide modified carbon black can be interwoven to form a more complex and compact physical barrier network, so that the processability of the rubber sealing strip is greatly improved.
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