In recent years, fire accidents caused by polymers have attracted great attention from all walks of life, and the research and development of flame-retardant polymers has become a hot topic. At present, organic flame retardants used in the market have hazards such as large smoke production and toxic smoke, which are subject to legal restrictions in Europe, the United States, Japan and my country. Therefore, inorganic flame retardants have received great attention.

Magnesium hydroxide (Mg(OH)₂) is a white crystal or powder with weak alkalinity and hygroscopicity. The part soluble in water is completely ionized, and the saturated solution concentration is 1.9 mg/L (18°C). Its preparation methods include brucite grinding method and chemical synthesis method (such as calcium hydroxide method, ammonia method, sodium hydroxide method).

In plastic filling modification, the performance parameters of calcium carbonate have an important impact on the quality and processing technology of the final product.

Calcium carbonate (CaCO₃), as an indispensable filler in the plastics industry, has become a key component in plastic products with its excellent performance and economy. It not only improves the performance of plastics, but also effectively reduces production costs, so it plays a vital role in the field of plastic processing.

Particle size, or grain size, refers to the size of the particles, and is often referred to as particle size or diameter.

When choosing talc, at least the "four degrees" of talc itself should be considered, namely: purity, whiteness, flakeness and fineness. Generally speaking, in order to evaluate the quality of talc products, at least the above four factors should be considered. Judging the quality by a single indicator may be incomplete. If someone judges the quality of talc only based on the average particle size, it is very controversial.

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The application of Mag hydroxide for Compound Fertilizer, especially in the agricultural field, does play an important role.Mag hydroxide for Compound Fertilizer provide essential magnesium to plants.Mag hydroxide for Compound Fertilizerpromotes crop growth and increases yields by improving the physical and chemical properties of the soil. Here is a further summary of its role: