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Study on Toughening Effect of Halogen-free Intumescent Flame Retarded ABS Composites

Author: LiuSen
Tutor: XiaYing
School: Dalian University of Technology
Course: Materials Science
Keywords: Arcylonitrile-butadiene-styrene copolymer Intumescent flameretardant Melt grafting Multi-monomer
CLC: TB332
Type: Master's thesis
Year: 2009
Downloads: 1
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Abstract


Using Acrylonitrile-Butadiene-Styrene(ABS) as the carrier resin and DCP as an initiator, by using the method of melt grafting copolymerization, ABS-g-AA and ABS-g-MAA were prepared with acroleic acid(AA) and methacrylic acid(MAA) as grafting monomers; ABS-g-(AA-co-St) and ABS-g-(MAA-co-St) were prepared with AA and MAA as grafting monomers, styrene(St) as a co-monomer; ABS-g-(MAH/AA/St) and ABS-g-(MAH/MAA/St) were prepared with maleic anhydride(MAH), AA and MAA as grafting monomers, St as a co-monomer. The results of IR showed that graft co-polymers were target products. The grafting co-polymers were taken as compatibilizers. The influence of compatibilizers on mechanical properties, processability, flame retardant performance, thermal behavior of mass loss and microstructure was studied. The results showed that when the grafting ratio of MAS-1was7.0%and the amount of MAS-1was5phr, the impact strength of ABS/IFR/ABS-g-(MAH/AA/St) was improved, which can reach3.70KJ/m2,37%more than the impact strength of ABS/IFR. There was little change with tensile strength and LOI.The influence of the amount of compatibilizers on mechanical properties, processability, flame retardant performance, thermal behavior of mass loss and microstructure was studied. The results showed that when the grafting ratio of SA-5was2.74%and the amount of SA-5was2phr, the mechanical properties of ABS/IFR/SA-5improved greatly. The impact strength and the tensile strength can reach4.65KJ/m2and37.5MPa, respectively.72.2%and13.6%more than the impact strength and the tensile strength of ABS/IFR. Meanwhile, the lose of flame retardant performance of ABS/IFR/SA-5was slightly, LOI can reach27.0%and melting index was18.0g/10min. Flame retardance of ABS/IFR/SA-5composites can still reach FV-0rate.

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CLC: > Industrial Technology > General industrial technology > Materials science and engineering > Composite materials > Non-metallic composite materials
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