The role of magnesium oxide in chlorinated butyl rubber products
Magnesium oxide is an oxide of magnesium, an ionic compound that is white solid at normal temperature and can be used as an accelerator, an activator, a scorch relieving agent, an acid-absorbing agent, a viscous adjusting agent in the production of rubber products, and its main function It is to improve the fluidity of the rubber compound and the oxygen resistance of rubber products and improve the overall performance of rubber products. Chlorinated butyl reclaimed rubber instead of chlorinated butyl rubber can be used in the production of various butyl products by adding an appropriate amount of magnesium oxide to improve the performance of chlorinated butyl rubber products. So, what is the specific role of magnesium oxide in chlorinated butyl reclaimed rubber products?
Chlorinated butyl reclaimed rubber has excellent airtightness, watertightness, heat resistance, corrosion resistance, ozone resistance, aging resistance, high damping, is used in the production of many rubber products significantly reduce the cost of raw materials; to butyl bottle For example, the activity of magnesia can increase the crosslink density of chlorinated butyl reclaimed rubber, thereby improving the physical properties such as the tensile strength and impact resistance of the butyl stopper.
The heat resistance of chlorinated butyl reclaimed rubber products is related to the setting of the vulcanization system. Magnesium oxide can activate the curing process of chlorinated butyl regenerated rubber. The higher the bond energy, the better the heat resistance of the chlorinated butyl regenerated rubber vulcanizate. Magnesium oxide can improve the antioxidant performance of chlorinated butyl reclaimed rubber, reduce the oxygen absorption rate of chlorinated butyl reclaimed rubber, and improve the heat-resistant oxygen aging properties of rubber products; when using chlorinated butyl regenerated rubber to produce medical cork stoppers, Magnesium oxide can also relieve or eliminate the stickiness and cracking phenomenon of chlorinated butyl vulcanizate, improve the sealing effect of medical rubber stoppers, and prolong the service life of butyl stoppers. If the cost permits, it can also use a small amount of titanium dioxide in the formula. Further inhibit the aging of chlorinated butyl regenerated medical stoppers.
Magnesium oxide has many functions in the production of chlorinated butyl reclaimed rubber products. The alkali resistance, electrical insulation, thermal conductivity and coefficient of thermal expansion of chlorinated butyl reclaimed rubber products after adding magnesium oxide can be significantly improved; In production, the role of magnesium oxide in chlorinated butyl reclaimed rubber products has a direct relationship with the activity of magnesium oxide. Its activity size is an important indicator to measure the role of magnesium oxide in the rubber industry: generally, the greater the activity of oxidation Magnesium can improve the physical properties of rubber products. Among them, the active magnesium oxide particles are micronized, and the ratio of surface atoms to bulk atoms is large. It has high activity and physical adsorption capacity. It is an important inorganic activator in rubber products, and a small amount of magnesium oxide can be significant. Improve the vulcanization efficiency of chlorinated butyl reclaimed rubber, improve the fluidity and oxidation resistance of the rubber, and improve the physical properties of chlorinated butyl reclaimed rubber products.