Magnesium oxide used as curing activator in the rubber industry, used as catalysis and additives in petroleum chemical industry. It is the preferred material in automobile tires, aircraft tires, industrial cable industry. Used in zinc oxide ceramics, coating paint, transparent rubber, latex and plastic industry, it plays the role of increasing strength, density, adhesion and roughness.
Magnesium oxide is an important activator in rubber industry, also used as crosslinking agents, colorants in CR, XIIR. At present, as long as mention the magnesium oxide quality problems, people are confused, even doubt the national standard test methods. Why should to detect the purity of magnesium oxide? What is the effect of the purity on rubber? When magnesium oxide contains a certain amount of impurities, such as: iron, lead and copper, it will make the rubber products discolor. Cadmium can prevent activation of certain magnesium oxide accelerator, copper and manganese can damage the aging properties of rubber products. If the purity of magnesium oxide is not enough, it also have an affect on rubber vulcanization degree. So it is meaningful to test the pure of magnesium oxide. On the whole, magnesium oxide also can be divided into light magnesium oxide and active magnesium oxide.