It is mainly used in brominated butyl rubber plugs and halogenated butyl rubber plugs, and its main functions are vulcanization accelerators and acid absorption.
Requirements for magnesium oxide: Generally, both light and activated magnesium oxide are used.
Light magnesia requires MgO ≥ 93-95%, CaO ≤ 1.5%, apparent specific volume ≥ 5ml/g, fineness 325 mesh, sieve residue ≤ 0.01, hydrochloric acid content to meet the national standard excellent grade.
Requirements for activated magnesium oxide: the iodine absorption value is above 120, and other indicators are the same as above.
Clarity and whiteness In general, the better the whiteness of domestically produced magnesium oxide, the higher the purity, and relatively speaking, the fewer impurities.
In terms of indicators, Xingtai Meishen Co., Ltd. is one of the drafting units of the national standard for magnesium oxide. It is a professional manufacturer of magnesium oxide. The quality is trustworthy and can meet the needs of various users for magnesium oxide.
Note: The requirements for fineness, mechanical impurities, and black and white dots are very strict. Generally, there are no more than 5 black and white dots per 10 grams. Clarity: mainly related to hydrochloric acid insolubles and purity, but also related to iron, chloride, sulfate and other impurities.
