Time：2023.03.13Browse：1
The expansion graphite is a loose and porous worm -like substance prepared by the procedure of graphite scales through the intervening, washing, drying, and high temperature. When the expansion graphite encounters high temperature, it can instantly swell 150 ~ 300 times in volume, which changes from sheet to worm -shaped, thereby loose structure, porous and bending, expanded surface area, improved surface can be enhanced. In this way, it increases its softness, return elasticity and plasticity.
The expansion graphite is widely used, and the main development directions are as follows:
1. Granules expand graphite: Small particles expand graphite mainly refer to 300 purposes that can expand graphite, and its expansion volume is 100ml/g. This product is mainly used for flame retardant coatings, and its demand is very large.
2. Expansion of the swelling temperature at height: The starting expansion temperature is 290-300 ° C, and the expansion volume is ≥230ml/g. This type of expansion graphite is mainly used for the flame retardant of engineering plastics and rubber.
3. Starting lower-beginning expansion temperature, low temperature expansion graphite: The temperature of such expansion graphite began to expand is 80-150 ° C, and the expansion volume at 600 ° C is 250ml/g.
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