High length-diameter ratio antifungin whisker synthesis method

A magnesium borate whisker and synthesis method technology, applied in the field of magnesium borate whisker synthesis, can solve the problems of large-scale industrial implementation difficulty, expensive equipment, environmental pollution, etc., to reduce spray drying process, reduce service life, and avoid gas pollution effect
CN1807242AActive Publication Date: 2006-07-26青海中信国安科技发展有限公司 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
青海中信国安科技发展有限公司
Publication Date
2006-07-26

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Abstract

The invention relates to a process for synthesizing magnesium borate crystal whisker with high length-diameter ratio, which consists of reacting boric acid, magnesium chloride and caustic soda in water solution by right proportion to obtain boracic magnesium compound precipitate, filtering to obtain precursor for magnesium borate crystal whisker production, then mixing fluxing agent comprising NaCl or NaCl and KCl with the precursor, charging menthol, ethanol, water or their mixed solution, immersing, agitating and mixing, subjecting the mixture to high temperature reaction at 500-900 deg C for 5-10 hours, cooling down, washing with water, and finally drying.
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Description

technical field

[0001] The invention relates to a synthesis method of magnesium borate whiskers Background technique

[0002] Magnesium borate whiskers are highly oriented low-dimensional crystals grown in the form of single crystals. They have high strength, high modulus, high wear resistance and excellent corrosion resistance similar to carbon whiskers and silicon carbide whiskers, but Its price is only 1 / 20-1 / 30 of theirs, and it can be widely used as a reinforcing material for magnesium-aluminum-based metals, rubber, plastics, ceramics and other composite materials.

[0003] At present, the synthesis process of magnesium borate whiskers mainly adopts the melting method, that is, the raw material boron source boric acid, magnesium source magnesium chloride and fluxing agent sodium chloride, potassium chloride, etc. are mixed with water in a certain proportion, and the powder is obtained by spray drying, and then heated at high temperature. After the melting reaction, was...

Claims

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