High-molecular self-sealing polymer for automobile tires and preparation method thereof

Abstract

The invention relates to a high-molecular self-sealing polymer for automobile tires and a preparation method thereof. The self-sealing polymer is composed of two ingredients, namely a solid state and a liquid state. Main ingredients of the self-sealing polymer contain, by weight, 30-38% of a styrenic thermoplastic elastomer, 40-45% of thermoplastic polymer resin with its relative molecular weight of 200-2000, 5-15% of a plasticized softening ingredient, 1-2% of an anti-aging antioxidation ingredient, 0-2% of a catalytic promotion ingredient and 0-8% of a filling temperature-resistant ingredient. The high-molecular self-sealing polymer provided by the invention undergoes hot-melt spraying on the inside wall surface of an automobile tire so as to form a uniform coating which is no less than 3.5 mm thick. The uniform coating can have leakage-proof, anti-pricking and cannonproof effects. The invention has advantages as follows: raw materials are convenient to purchase; cost is low; and the product has good elasticity, tensile strength, self-complement leakproofness and the like. The invention provides more effective technical support for improving usability of the product and reducing use cost of users.

Description

technical field [0001] The invention relates to a sealant and a preparation method thereof, in particular to a polymer self-sealing polymer used for automobile tires and a preparation method thereof. Background technique [0002] At present, there are two types of car wheels used in vehicles, one with inner tubes and the other without tubes. At present, almost all of the passenger vehicles use tubeless wheels. The country requires gradual promotion and use of heavy-duty vehicles. Tubeless car wheel. Tubeless car wheels have the advantages of good heat dissipation, softness, sealing and ride comfort, and long intervals between inflation and use. However, when tubeless car tires are punctured by sharp objects, the sharp objects remain in the car tire body, The high-pressure gas of the car tires will leak out or blow out at the punctured part; when the sharp object pierces the car tire and breaks away from the car tire, the high-pressure gas in the tubeless car wheel will leak...

AI Technical Summary

Problems solved by technology

Existing polymer self-sealing polymer adhesives are difficult to meet this requirement, mostly due to poor adhesion of polymer self-sealing polymer adhesives and unreliable bonding with the inner wall crown surface of automobile tires, resulting in the polymer self-sealing polymer adhesive layer falling off or falling off. Defects, and it is difficult to achieve the function and effect of the upgraded car tires

[0006] In order to solve the above-mentioned problems, relevant manufacturers and research institutes have worked hard to find a solution, but no suitable polymer self-sealing polymer has been found for a long time