Method of preparing high-purity high-dispersion magnesium hydroxide fire retardant

A magnesium hydroxide, high-dispersion technology, applied in the direction of fire-resistant coatings, etc., can solve the problems of low product purity, large product particle size, and low added value, and achieve the effects of improving production efficiency, improving purity, and narrowing the distribution
CN101012382AInactive Publication Date: 2007-08-08ZHONGBEI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHONGBEI UNIV
Publication Date
2007-08-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a making method of high-purity high-dispersing magnesium hydroxide flameproof agent, which comprises the following steps: allocating mother liquid with density at 0.5-3.0mol / L through bittern and acetone; adding ammonia to prepare slurry; filtering; washing; drying to obtain the product.
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Description

technical field

[0001] The invention relates to a preparation method of an inorganic flame retardant, in particular to a preparation method of a high-purity and high-dispersion magnesium hydroxide flame retardant. Background technique

[0002] Flame retardants can be divided into two categories: organic flame retardants and inorganic flame retardants according to their chemical composition. Inorganic flame retardants, especially magnesium hydroxide, can not only play a flame retardant role, but also can play a filling role. It has the characteristics of good thermal stability, high efficiency, smoke suppression, drip resistance, safe filling, and basically no pollution to the environment. It is widely used in flame-retardant materials, and can be used in plastic and rubber industries such as polyethylene, polypropylene, polyvinyl chloride, high-impact polystyrene and ABS. Although aluminum hydroxide entered the market earlier, its consumption is much larger than that of mag...

Claims

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