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《Polymer Materials Science & Engineering》 2014-07
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Preparation of Acrylate Copolymer with Core-Shell Structure and Toughening of Polycarbonate

Bo Lu;Peng Li;Jiao Qi;Wei Zhang;School of Materials Science and Engineering,Shenyang University of Chemical Technology;  
Polybutyl acrylate( PBA) / polymethyl methacrylate( PMMA) core-shell emulsions were prepared by semi-continuous emulsion polymerization. After further treatment of latex,the acrylate copolymer( ACR) was produced.Then polycarbonate( PC) was toughened with ACR. The effect of emulsifier content on the particle size of latex and the effect of ACR content,the ratio of PBA /PMMA,emulsifier content,different cross linking monomer on the mechanical property of PC /ACR blends and the impact fracture morphology of the blends were studied by SEM. The result show that the particles size of PBA /PMMA copolymer latex decreases with increase of the emulsifier content,and increases with increase of OP-10 content of emulsifier. With the ACR content of 6%,3% emulsifier and m( PBA) /m( PMMA) of 75 /25,using 8% butanediol dimethacrylate( BDDMA) as cross linking monomer,the notched impact strength of PC /ACR blends is 2 times of PC /ACR blends with ethylene glycol dimethyl acrylate( EGDMA) as cross linking monomer. The notched impact strength of PC /ACR blends increases with increase of the ACR content,tensile strength and flexural strength of PC /ACR blends less decrease with increase of the ACR content. SEM indicates that the particle size of ACR in the blends is greater than that in the core-shell copolymer latex.
【CateGory Index】: TQ325.7
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【Citations】
Chinese Journal Full-text Database 5 Hits
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【Co-citations】
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