Compared with normal magnesium oxide, the active magnesium oxide is different from the active. Therefore, what exactly does this mean? When we use it, what’s the profit can it bring?
The active of magnesium oxide means magnesium oxide’s ability of participating physical process or chemical process. This is actually the unsaturation. However, the difference of magnesium oxide’s active is caused by some factors, such as the incomplete, the size of matted crystal and so on. The active magnesium oxide is different from normal magnesium oxide. It mainly reflected in these aspects:
It should have a certain active, and can indicate the activity with citric acid（CAA）. The smaller numerical value stands for the higher activity. At the same time, it can be showed by iodine absorption value.
‚ Active magnesium oxide will absorb moisture and carbon dioxide when it exposed to air, result the activity is reduced. Sometimes it need be protected through chemical treatment. The other property is similar with light magnesium oxide.
ƒ The appropriate grain fineness distribution. Generally speaking, average grain diameter is less than 2μm. The micro-morphology is irregular particles: sphaeroid grain, or tabular crystal.
- Product Usage
The active magnesium oxide is mainly used for the activating agent and accelerator in the chloroprene rubber, fluororubber, butyl rubber and styrene-butadiene rubber. The activity of magnesium oxide can increase the crosslinking density of butyl rubber. Therefore, it can improve the physical performance of rubber stopper. It can be used in the padding of oil paint, plastics, paper and adhesion agent.
From above two points, we can see the advantages of active magnesium oxide.