In actual production, when a proper amount of butyl reclaimed rubber is used in natural rubber products, the finished product has better aging resistance and air permeability resistance. In order to further expand the application range of natural rubber/butyl reclaimed rubber and meet the performance needs of more rubber products, rubber product manufacturers can adjust the type and amount of compounding agents in the compound rubber formula to increase the natural rubber/butyl reclaimed rubber. The comprehensive performance of glue and glue.
1. Raw rubber selection: When natural rubber and butyl reclaimed rubber are used together to produce rubber products, butyl reclaimed rubber with appropriate indicators is generally selected according to the specific performance requirements of the rubber products. Theoretically, the higher the mechanical properties of butyl reclaimed rubber, the natural rubber/ The better the physical and mechanical properties of the butyl reclaimed rubber 2YLYY521 compound; the higher the butyl content, the better the aging resistance, heat resistance, and air permeability resistance of the natural rubber/butyl reclaimed rubber compound.
2. Vulcanization system: natural rubber and butyl reclaimed rubber can be co-vulcanized, and the traditional sulfur vulcanization system is usually selected for the combined rubber. It is recommended to use the accelerator TMTD as the main accelerator and the accelerator M as the second accelerator, with an appropriate amount of Zinc oxide and stearic acid. Appropriately increasing the amount of compounding agent in the vulcanization system can increase the vulcanization crosslinking density of the combined rubber, and improve the mechanical strength of the combined natural rubber/butyl reclaimed rubber.
3. Reinforcing system: natural rubber/butyl reclaimed rubber is generally used for reinforcement with carbon black and filled with clay. The higher the amount of carbon black, the greater the rigidity and hardness of the rubber, the lower the elongation at break, and the The change in tensile strength is not obvious; when the amount of clay is increased, the physical and mechanical properties do not change much. Therefore, when using natural rubber/butyl reclaimed rubber to prepare high-hardness rubber products, it is recommended to increase the amount of carbon black; when preparing ordinary rubber products, use a large amount of clay and appropriately reduce the amount of carbon black to reduce costs.
4. Tackifying system: Appropriate use of tackifying resin in the natural rubber/butyl reclaimed rubber compound can significantly improve the self-adhesiveness of the compound vulcanizate, especially when the amount of butyl reclaimed rubber is large.
Butyl reclaimed rubber has excellent air tightness and good heat resistance, chemical stability, etc., blending in natural rubber products can not only improve the overall performance of natural rubber products, but also reduce the cost of raw materials. In actual production, selecting the appropriate butyl reclaimed rubber and reasonably adjusting the rubber product formula can further improve the comprehensive index of natural rubber/butyl reclaimed rubber combined with rubber while reducing the cost, and extend the service life of the product.
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