
Preparation and Properties of AHP/MPP Flame Retardant HDPE/BF Composites
WANG Zhao-li, ZHAO Sheng-yun, JIANG Hui-hua, GONG Xin-huai
Preparation and Properties of AHP/MPP Flame Retardant HDPE/BF Composites
In order to improve the flame retardancy of bamboo fiber reinforced high density polyethylene (HDPE/BF) composites, melamine phosphate (MPP) and aluminum hypophosphite (AHP) were used as compound flame retardants to prepare the composites through internal mixing. The composites were characterized by limiting oxygen index (LOI) and cone calorimetry, and the effects of the ratio of MPP and AHP on the mechanical properties and flame retardancy of the composites were discussed. The results show that the tensile strength and impact strength of the composites decrease obviously with the addition of flame retardant. MPP and AHP have better flame retardant effect than single addition. When the dosage of MPP and AHP is 1:5, the flame retardancy of the composite is the best, and its LOI reaches 27.9%, which is a 50.8% increase compared with the composite without flame retardant, and an 8.6% and 3.0% increase compared with the composite with MPP and AHP alone, respectively.
Bamboo fiber / High density polyethylene / Flame retardancy / Melamine phosphate / Aluminum hypophosphite
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