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Research on the impact modification of PVC/wood flour composites

Fang Zhen

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Abstract

Wood flour was pretreated with terpolymer of methacrylic acid,butyl acrylate and methyl methacrylate[P(MAA-BA-MMA)],and then the PVC/wood flour composite materials were toughness modified by CPE,ACR and nano-CaCO_3.The results showed that the effects were the best when wood flour was pretreated by P(MAA-BA-MMA) and then the composites were toughened by ACR,and the tensile strength,flexural strength,impact strength and elongation at break of PVC/wood flour composites were increased by 7.97%,5.26%,68.85%and 571.26%, resp.The SEM results showed that the interface of composites was blurry and the fracture surfaces exhibited toughness characteristics when the wood flour was pretreated by P(MAA-BA-MMA) and then the composites were toughened by impact modifier.

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What this paper is about

Wood flour was pretreated with terpolymer of methacrylic acid,butyl acrylate and methyl methacrylate[P(MAA-BA-MMA)],and then the PVC/wood flour composite materials were toughness modified by CPE,ACR and nano-CaCO_3.The results showed that the effects were the best when wood flour was pretreated by P(MAA-BA-MMA) and then the composites were toughened by ACR,and the tensile strength,flexural strength,impact strength and elongation at break of PVC/wood flour composites were increased by 7.97%,5.26%,68.85%and 571.26%, resp.The SEM results showed that the interface of composites was blurry and the fracture surfaces exhibited toughness characteristics when the wood flour was pretreated by P(MAA-BA-MMA) and then the composites were toughened by impact modifier.

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Available abstract

Wood flour was pretreated with terpolymer of methacrylic acid,butyl acrylate and methyl methacrylate[P(MAA-BA-MMA)],and then the PVC/wood flour composite materials were toughness modified by CPE,ACR and nano-CaCO_3.The results showed that the effects were the best when wood flour was pretreated by P(MAA-BA-MMA) and then the composites were toughened by ACR,and the tensile strength,flexural strength,impact strength and elongation at break of PVC/wood flour composites were increased by 7.97%,5.26%,68.85%and 571.26%, resp.The SEM results showed that the interface of composites was blurry and the fracture surfaces exhibited toughness characteristics when the wood flour was pretreated by P(MAA-BA-MMA) and then the composites were toughened by impact modifier.

Key concepts: Wood flour, Materials science, Composite material, Izod impact strength test, Ultimate tensile strength, Flexural strength, Methyl methacrylate, Toughness

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