Natural rubber is the most traditional rubber variety in the rubber products industry, and natural rubber products are very common in production and life. However, as the demand for living production continues to grow, a single natural rubber can no longer meet the demand for most rubber products, and natural rubber modification is imperative. In actual production, natural rubber products are often blended with other types of rubber or rubber powder for modification; the waste tire rubber powder processed by waste tires can not only improve the performance of natural rubber products, but also reduce the cost of raw materials.
1. Tire rubber powder can improve the performance of natural rubber
Research shows that adding proper amount of waste tire rubber powder to natural rubber products can improve the fluidity of rubber compound, reduce the shrinkage rate of natural rubber, improve the dimensional stability of semi-finished products of natural rubber products, and significantly improve the processing performance of natural rubber.
2. Tire rubber powder can improve the comprehensive index of natural rubber products
The tire rubber powder retains the characteristics of rubber elastomer, which itself contains a large amount of vulcanizing agent, reinforcing agent and anti-aging agent; when the natural rubber product is modified with a certain proportion of tire rubber powder, the tensile strength and elongation of the product The rate will decrease with the increase of the amount of luntai rubber powder, but the tear resistance, wear resistance, aging resistance and fatigue resistance of the rubber will be significantly improved, and the heat generation and compression set of natural rubber products will be reduced; The medium amount of tire rubber powder modification can significantly improve the comprehensive index of natural rubber products.
In the formulation of natural rubber / styrene-butadiene rubber or natural rubber / butadiene rubber / styrene-butadiene rubber and the production of tread rubber 1JLYY1022, the use of 5-10 parts of tire rubber powder can significantly improve the wear resistance and resistance of tire tread rubber. Puncture, etc., to extend the mileage of car tires and improve the adaptability of tire road conditions.
3. Tire rubber powder can reduce the cost of natural rubber products
Compared with ordinary rubber fillers, the interface between tire rubber powder and natural rubber is better, and it can replace some rubber filler or natural rubber. The price of waste tire rubber powder is lower than that of reinforcing filler such as carbon black. For example, the current price of carbon black is about 7,000 yuan / ton, the price of rubber grade white carbon black is about 6,000 yuan / or so, the price of natural rubber is several times the price of tire rubber powder; therefore, the amount of tire rubber powder is mixed with the natural rubber product formula. Modification can reduce the amount of high-priced reinforcing filler or natural rubber and reduce the production cost.
4. Natural rubber selection tire rubber powder modification needs attention
Tire rubber powder is of great significance for improving the performance of natural rubber and improving the comprehensive index of natural rubber products, but this does not mean that the more the rubber powder in natural rubber products, the better. In actual production, excessive use of tire rubber powder will lead to a significant decrease in the strength of natural rubber. When using rubber powder modified with natural rubber powder, it is necessary to control the amount of rubber powder reasonably and activate if necessary. Rubber powder, further improve the comprehensive performance of natural rubber products and extend the service life.