Tire R-rubber Encyclopedia

Recycling of used tires in tire sidewall rubber

Create Date:2019-01-24 08:28:09Click volume:428

With the popularization of automobiles, the number of waste tires generated every year is increasing. How to solve these waste tires has become a subject of constant research; tire sidewall rubber needs to frequently undergo flexural deformation during the running of the vehicle, and during use, It will be affected by many factors such as heat, light, oxygen, ozone, etc., and the requirements for flexing resistance, puncture resistance and aging resistance of the rubber compound are particularly high; then whether the used tire can be used again after reasonable treatment What about the side rubber?

The main components of used car tires are natural rubber, synthetic rubber (styrene-butadiene rubber or butadiene rubber) and carbon black; while the tire sidewall is generally made of natural rubber, styrene-butadiene rubber or butadiene rubber, together with carbon black, White carbon black improves the sidewall rubber; it is basically the same in terms of composition. The tire rubber powder and tire reclaimed rubber processed from waste tires can be used in the production of sidewall rubber.

1. Circulating application of waste tire rubber powder in tire sidewall rubber

The waste tire rubber powder processed from used tires has a low price, and the effect of natural rubber, styrene-butadiene rubber or butadiene rubber is much better than that of traditional rubber fillers, and can be used in the production of tire sidewall rubber; Powder as a powder material, excessive amount or excessive particle size will reduce the mechanical strength of the tire side rubber compound, so it is necessary to carefully select the tire rubber powder and control the amount of waste tire rubber powder in the tire side rubber formula.

Studies have shown that the use of natural rubber styrene-butadiene rubber and butadiene rubber as the main raw material in the tire sidewall compound formulation with about 10 parts of high-fine (80-100 mesh) tread rubber powder can reduce a certain proportion of raw material costs. It can improve the tear resistance and fatigue resistance of the tire sidewall rubber, thereby improving the mileage of the automobile tire.

2. Cyclic application of tire reclaimed rubber in tire sidewall rubber

The tire rubber powder processed from waste tires can be directly used in the production of tire sidewall rubber, and can also be processed into recycled rubber (currently the main treatment method for used tires is to process tire reclaimed rubber), and recycled to tire tires again. In the production of side rubber; tire reclaimed rubber is recycled rubber which is processed by magnetic separation, desulfurization, filtration and refining. The high-quality tire reclaimed rubber has good fineness, small specific gravity and high strength. In the production of tire sidewall rubber, not only can the rubber processing technology be improved, but also the flexural flexibility and heat-resistant air aging of the tire sidewall can be improved.

Studies have shown that the use of 5-10 parts of fine tire reclaimed rubber in tire sidewall rubber can not only meet the tire sidewall performance requirements, improve the processing technology and performance, but also reduce the production cost of a certain proportion.

Seeing this, you may ask, the original tire rubber powder and tire reclaimed rubber can only be used in a low proportion of the side rubber, which can be used? Xiaobian wants to say that we do not care whether the rubber tire and tire reclaimed rubber improve the process performance and finished product quality of the rubber in the side rubber. In terms of production cost, if the tire is mixed with 5 tire reclaimed rubber tires The cost of glue production is reduced by 0.3 yuan, so 1 million tires can be reduced by 300,000.