以轻烧氧化镁制备六角片状氢氧化镁的研究

doi:10.19964/j.issn.1006-4990.2021-0154

Abstract

Abstract:

Hexagonal plates of magnesium hydroxide was prepared from salt lake light-burned magnesia with different grain size by hydration-hydrothermal method.The influence of reaction temperature,reaction time,stirring rate and solid-liquid ratio on the conversion rate of magnesia,the morphology and particle size of magnesium hydroxide was investigated systematically. The phase,morphology and particle size of magnesium hydroxide were investigated by X-ray diffraction（XRD）,scanning electronic microscope（SEM）,and laser particle size analyzer（LPSA） respectively.Meanwhile,magnesium hydroxide from di-fferent raw materials was added in PE to test its flame retardancy.The results showed that by controlling the reaction tempera-ture,reaction time,stirring speed and solid-liquid ratio,the hydration rate of magnesium oxide raw powder could reach 95%,the hydration rate of magnesium oxide fine grinding powder could reach 100%,and the obtained magnesium hydroxide was both hexagonal,but the particle size was different.When it was used in PE,fine-grained magnesium hydroxide had better dispersion and more obvious flame retardant performance.

Key words: light-burned magnesia, hexagonal plates, magnesium hydroxide, flame retardant, hydrothermal

CLC Number:

TQ132.2

KONG Huimin,ZOU Laixi,LIU Yuan,CAO Yuwei,LIN Yanjun,LUO Xianping. Study on preparation of hexagonal plates of magnesium hydroxide by light-burned magnesium oxide[J]. Inorganic Chemicals Industry, 2022, 54(1): 39-44.

Figures/Tables 10

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References 30

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Inorganic Acid-Base-Salt Committee of CIESC

Study on preparation of hexagonal plates of magnesium hydroxide by light-burned magnesium oxide

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