Effect of Magnesium Hydroxide Morphology on Flame Retardancy of Epoxy Resin

GUO Fan, JIAO Wei-xian, HUANG Lun, MENG Xi, LIU Chen, YE Dan-yang, LI Li-juan

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Plastics Science and Technology ›› 2024, Vol. 52 ›› Issue (03) : 99-105. DOI: 10.15925/j.cnki.issn1005-3360.2024.03.020
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Effect of Magnesium Hydroxide Morphology on Flame Retardancy of Epoxy Resin

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Abstract

The morphology of the material has a great influence on its flame retardancy. In order to study the effects of magnesium hydroxide with different morphologies on the flame retardancy of epoxy resin, magnesium chloride and magnesium sulfate were used as raw materials to prepare magnesium hydroxide with rod, flake and flower, and were added to epoxy resin to prepare epoxy resin composite to explore the flame retardancy and the flame retardant mechanism. The results show that the diameter of rod magnesium hydroxide ranges from 250 nm to 500 nm and the length is about 5 μm. The flaky magnesium hydroxide has a hexagonal sheet structure with a size of 100 nm. The size of flower ball magnesium hydroxide is 1~2 μm. When the addition of magnesium hydroxide is 3%, the flame retardancy of epoxy resin is improved as: flake>flower>rod. Compared with pure epoxy resin, the addition of flaky magnesium hydroxide reduceds the TSP by 35.1%, the PHRR by 36.6%, and the PCOP by 39.4%. The research provides the direction for the application of magnesium hydroxide in polymers.

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Magnesium hydroxide morphology / Epoxy resin / Flame retardancy

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GUO Fan , JIAO Wei-xian , HUANG Lun , et al . Effect of Magnesium Hydroxide Morphology on Flame Retardancy of Epoxy Resin. Plastics Science and Technology. 2024, 52(03): 99-105 https://doi.org/10.15925/j.cnki.issn1005-3360.2024.03.020

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