Development of ADP Based Halogen-Free Flame Retardant PC/ABS Alloy System

WANG Bai-nian, WANG Peng-hui, ZHANG Ru, GE Ren-jie, ZHANG Shao-qi, YANG Bao-jun

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Plastics Science and Technology ›› 2024, Vol. 52 ›› Issue (02) : 31-35. DOI: 10.15925/j.cnki.issn1005-3360.2024.02.006
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Development of ADP Based Halogen-Free Flame Retardant PC/ABS Alloy System

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Abstract

In order to improve the flame retardancy of polycarbonate/acrylonitrile-butadiene-styrene (PC/ABS) alloy, the flame retardant formula system was explored by the method of compound synergy. Taking the limiting oxygen index (LOI) and vertical combustion grade (UL-94) of PC/ABS composites as the main indexes, a binary flame retardant formula system with aluminum diethylphosphinate (ADP) as the main flame retardant and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) as the synergistic flame retardant was constructed. PC/ABS/binary flame retardant composites were prepared by mixing PC/ABS and binary flame retardant systems. The flame retardancy, mechanical properties, combustion characteristics and thermal stability of PC/ABS composites were studied by UL-94 vertical combustion test, oxygen index (LOI) test, mechanical property test, cone calorimetry test and thermogravimetric analysis test. The results show that when the mass ratio of ADP to DOPO is 3∶1 and the total addition amount of binary flame retardant formula system is 15.0%, PC/ABS composites have excellent flame retardancy, mechanical properties, combustion characteristics and thermal stability.

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PC/ABS alloy / ADP / DOPO / Flame retardancy

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WANG Bai-nian , WANG Peng-hui , ZHANG Ru , et al . Development of ADP Based Halogen-Free Flame Retardant PC/ABS Alloy System. Plastics Science and Technology. 2024, 52(02): 31-35 https://doi.org/10.15925/j.cnki.issn1005-3360.2024.02.006

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