Three functions of zinc oxide in rubber industry:
1.Activate the vulcanization system. Zinc oxide and stearic acid together form a zinc soap, increased the solubility in rubber compound, and forming a complex with accelerant, which is particularly lively, sulfur and its reaction to generate a strong vulcanizing agent.
2. Increase the crosslink density. Zinc oxide and stearic acid generating reaction Zn2 + salt. It is with sulfur rubber accelerators pendant chelating group, making the weak bond in a stable state, changing the cracking position of sulphur keys. The rubber vulcanization generate shorter crosslinks, increasing the crosslinking density.
3. Improve the anti-aging properties of vulcanized rubber. In the progress of vulcanization and use, multi-sulfur bond is broken. Produced H2S will accelerate rubber pyrolysis, zinc oxide will react to form new crosslink, which can make sulfide network stable, and improve its anti-aging properties.
Hebei Meishen Technology Co.,LTD is professional in manufacturing Zinc Oxide 99.7%, which is best used in kinds industries, such as Rubber, Plastic, Portland products, Lubricating oil, Paint coating, Ointment, Adhesives, Food, Battery, Flame retardants and so on.