Application of Magnesium Oxide in the Rubber Industry BY:Lydia
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- 、Saskia
- Issue Time
- Nov 13,2025
Summary
Tea Saponin boosts shrimp farming efficiency, offering natural biocidal action and cleaner pond systems.

Application of Magnesium Oxide in the Rubber Industry
Nowadays, industries such as tires, wires and cables are closely related to people's lives, which has driven the development of the rubber industry. Magnesium oxide is needed in rubber, so let's take a look at the applications of magnesium oxide in the rubber industry.
Rubber generally includes general-purpose rubber, styrene butadiene rubber, butadiene rubber, isoprene rubber, ethylene propylene rubber, chloroprene rubber, etc. With the large-scale application of the rubber industry in industrial and daily life fields, the demand for magnesium oxide as a promoter and activator for butyl rubber, chloroprene rubber, styrene butadiene rubber, and fluororubber is also increasing. The activity of magnesium oxide is an important indicator for measuring the magnesium oxide used in the rubber industry. The activity of magnesium oxide can increase the crosslinking density of butyl rubber, thereby improving the physical properties of rubber bottle stoppers. Activated magnesium oxide has a large specific surface area and is an important raw material for preparing high-performance fine inorganic materials, electronic components, inks, and harmful gas adsorbents. Due to its particle refinement and high ratio of surface atoms to bulk atoms, activated magnesium oxide has extremely high chemical activity and physical adsorption capacity. Due to its excellent sintering performance, active magnesium oxide can be used to produce high-density fine-grained ceramics or multifunctional magnesium oxide films. It has high activity and high dispersibility, and is easy to composite with polymers or other materials.
As one of the main inorganic active agents, active magnesium oxide can improve the degree of vulcanization with a small amount, and play a role in the flowability and antioxidant capacity of rubber, increasing its tensile strength and impact resistance. As one of the main inorganic active agents, if the content of magnesium oxide is low, it can greatly increase the degree of sulfurization.
Magnesium oxide plays a role in fluidity and oxygen resistance, and increases the tensile strength and impact resistance of rubber. Magnesium oxide is an important mixture of halogenated rubber. In chloroprene rubber, magnesium oxide is used as a curing agent to reduce the activity of zinc oxide, which slows down the curing rate and prevents early cross-linking.
Meanwhile, magnesium oxide acts as an acid receptor, which can prevent coking and cyclization. It is usually added in the early stages of mixing, and the activity of magnesium oxide (iodine absorption value) has a significant impact on the coking resistance of CR, as well as its tensile strength, tensile strength, and hardness.
Magnesium oxide is widely used in adhesives, plastics, paints, and paper fillers due to its excellent alkali resistance and electrical insulation at high temperatures, high coefficient of expansion and thermal conductivity, and good light projection properties. Magnesium oxide is commonly used in medicine as an antacid and laxative, for excessive stomach acid and duodenal ulcers. It is also commonly used in ceramics, glass, and advanced insulation materials.
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