Active magnesium oxide has a wide range of applications in the rubber industry, and its main role includes reinforcing, increasing the speed of vulcanization, improving physical and mechanical properties. The following is a detailed analysis of the application of active magnesium oxide in several common rubber and its role:
1, natural rubber (NR):
Active magnesium oxide as reinforcing filler can significantly improve the tensile strength, elongation and abrasion resistance of natural rubber.
By increasing the speed of vulcanization and shortening the vulcanization time, active magnesium oxide can improve the production efficiency of natural rubber.
Active magnesium oxide can also improve the processing properties of natural rubber, increase the stiffness of rubber, improve the dimensional stability of rubber products.
2, synthetic rubber (such as chloroprene rubber CR, styrene butadiene rubber SBR, etc.):
In chloroprene rubber, active magnesium oxide and zinc oxide and used as a vulcanizing agent, reduce zinc oxide activity, play a role in slowing down the rate of vulcanization, to prevent early cross-linking.
Active magnesium oxide as an acid acceptor, can prevent scorching and cyclization, usually added at the beginning of mixing.
The activity of active magnesium oxide (iodine adsorption value) is high or low on the anti-scorch performance of synthetic rubber, tensile strength, stretch and hardness has a great impact.
3, special rubber (such as halogenated rubber):
In halogen-containing rubber, active magnesium oxide is an important cooperating agent, playing the role of mobility and oxygen resistance, increasing the tensile strength and impact resistance of rubber.
In addition to the above main roles, active magnesium oxide can also effectively improve the UV, ozone and oil resistance of rubber products, thus extending the service life of rubber products. However, it should be noted that the amount of magnesium oxide added needs to be controlled, and excessive addition may lead to deterioration of rubber mechanical properties.
In conclusion, active magnesium oxide is widely used in the rubber industry, and its role is diverse and important. By reasonably controlling the addition amount and selecting suitable active magnesium oxide products, the performance and quality of rubber products can be significantly improved.