The role of zinc oxide in reclaimed rubber inner tube
Huajun Tire Factory
The inner tube is a circular elastic tube for maintaining the internal pressure of the tire, and has good air tightness, heat resistance, elasticity and aging resistance. Zinc oxide is a commonly used compounding agent in the production of inner tube formula, which can improve the processing technology and improve the performance of the inner tube in the reclaimed rubber inner tube. Zinc oxide has different functions in different formulations, so how to use zinc oxide correctly to make it play the greatest role in the inner tube of reclaimed rubber?
1. The role of zinc oxide in reclaimed rubber products
Zinc oxide is an oxide of zinc, also known as zinc white, is a commonly used compounding agent in rubber, which can be used as an active agent to improve the vulcanization speed of reclaimed rubber compound. As a reinforcing agent to improve the wear resistance, aging resistance, tear resistance, etc. of reclaimed rubber products; As a colorant and filler in white latex reclaimed rubber; Zinc oxide can also be used as an oxidant, thermal conductivity agent and hot melt agent in rubber. Zinc oxide HY9S9J2L in different formulations, different rubber in the role of different, in the actual production according to the rubber, the formula reasonable arrangement of the amount of use, so that it plays the greatest role.
2. Application of zinc oxide in reclaimed rubber inner tube
Zinc oxide is used as an active agent in the reclaimed rubber inner tube. Zinc oxide is often used in combination with stearic acid when designing the formula. Both of them can produce zinc soap and zinc salt, activate accelerator and vulcanizing agent, accelerate the vulcanization speed and improve the vulcanization efficiency. Can make the weak bond in a stable state, make the vulcanization produce short cross-linking bond, increase the cross-linking density. Zinc oxide as a reinforcing agent in the inner tube can improve the wear resistance, tear resistance, tensile strength, aging resistance and so on.
In the actual production of zinc oxide in reclaimed rubber products, generally add 2-5 parts, in the butyl reclaimed rubber inner tube can be appropriately added about 5 parts, with about 1.5 parts of stearic acid, to improve the performance of the inner tube.
When designing the formula of reclaimed rubber inner tube, the amount of zinc oxide should be reasonably arranged according to the performance of the inner tube. Zinc oxide has multiple functions and appropriately reduces the amount of other compounding agents.
Keywords: recycled rubber automobile cushion belt