A low temperature resistant inner tube formula

Abstract

The invention belongs to the field of the rubber industry and relates to a formula of an inner tube of a tire and in particular relates to a formula of a low temperature resistant inner tube. The inner tube is prepared from the following raw materials in parts by weight: 80-100 parts of natural rubber, 20-40 parts of butadiene rubber, 30-40 parts of carbon black, 10-20 parts of filling material, 10-15 parts of low temperature resistant softening agent, 1-6 parts of zinc oxide, 1-3 parts of stearic acid, 2-4 parts of anti-aging agent, 1-3 parts of microcrystalline wax, 2.1-4.3 parts of accelerator and 0.5-2.0 parts of vulcanizing agent. The formula has the advantages that the prepared inner tube compound can resist the low temperature of 40-60 DEG C below zero by adjusting the components and quantity ratio of the formula; good physical properties and usability of the inner tube at a super-low temperature can be effectively maintained by using the host materials including the natural rubber, the butadiene rubber and the low temperature resistant softening agent; the service life of the inner tube at a low temperature is further prolonged through reasonable coordination of various additives.

Description

technical field [0001] The invention belongs to the field of rubber industry and relates to a tire inner tube formula, in particular to a low temperature resistant inner tube formula. Background technique [0002] Tires are circular elastic rubber products that are rolled on the ground and rolled on various vehicles or machinery. Usually installed on metal rims, it can support the body, buffer external impact, realize contact with the road surface and ensure the driving performance of the vehicle. Tires are often used under complex and harsh conditions, and they are subjected to various deformations, loads, forces, and high and low temperature effects during driving, so they must have high load-bearing performance, traction performance, and cushioning performance. At the same time, it is also required to have high wear resistance and flex resistance, as well as low rolling resistance and heat generation. [0003] At present, the pneumatic inner tubes of various tires on th...

AI Technical Summary

Problems solved by technology

Natural rubber and its mixed rubber series are famous for their high strength and repairability, but their poor airtightness, poor thermal deformation and aging resistance, and high price limit their wide use

Butyl rubber and its mixed rubber series are famous for their good airtightness, but their irreparability, domestic mass production is impossible, and the price is expensive, which limits its application

[0004] For the mixed rubber inner tube mainly made of natural rubber, there has always been the disadvantage of poor low temperature resistance, especially in the northern region, the cold winter puts forward higher requirements for the inner tube of the tire, and it is used under low temperature for a long time , the joint strength, elongation at break and thermal tensile deformation of the inner tube will change significantly, which will affect the quality of the inner tube, and more seriously will endanger driving safety.

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