As rubber has been widely used for hundreds of years, it can both speed up the vulcanization speed and increase the degree of vulcanization cross-linking. Organic zinc can also be used as a reinforcing agent and thermal conductive agent for heat-resistant rubber. Zinc oxide has a strong affinity for electrons and a strong adsorption capacity for accelerators. It is the most active activator among metal oxides. Its mechanism of action in the rubber vulcanization process is roughly as follows:
First, zinc oxide reacts chemically with the accelerator to generate the accelerator zinc salt;
Secondly, the accelerator zinc salt interacts with polysulfur molecules to generate polysulfide zinc salt;
Finally, the polysulfide zinc salt reacts with the rubber macromolecules to ultimately complete chemical cross-linking.
Compared with ordinary zinc oxide, activated zinc oxide has stronger surface activity and better dispersion. Because its cost performance is better than ordinary zinc oxide, it It is increasingly used in the rubber industry.
Summary:
1. It is known from experiments that organic zinc can not only improve its processing performance, but also overcome shortcomings such as flying and sticking to rollers during the mixing process. Moreover, due to its increased surface activity and improved dispersion in the rubber compound, it can replace The effect of ordinary zinc oxide and activated zinc oxide;
2. Organic zinc can improve the thermal oxygen aging performance of rubber without changing the rubber formula system;
3. Since the formula and process conditions do not need to be adjusted when using organic zinc, the experiment is highly practical.
4. The price of ordinary zinc oxide is about 26,000 yuan/ton, while the price of active zinc oxide is 18,000 yuan/ton, and the price of organic zinc is 15,000 yuan/ton. The use of organic zinc can reduce the cost of rubber materials and improve economic benefits.
5. To sum up, Organic zinc is an ideal alternative to ordinary zinc oxide and active zinc oxide. Renewal products.
