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《Journal of Materials Science and Engineering》 2010-05
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Synergistic Modification of Polypropylene with Attapulgite/Elastomer

LOU Di,ZHONG Ming-qiang,CHEN Feng,YANG Jin-tao,SHENG Wei-ming(College of Chemical Engineering and Materials Science,Zhejiang University of Technology,Hangzhou 310014,China)  
Polypropylene(PP)/attapulgite modified with silane coupling agent(OATT)/polyolefin elastomer(POE) ternary composites and PP/OATT binary composites were prepared by melt blending method,and were investigated systemically for its mechanical properties,rheological and crystallizing behaviors.It was found that the addition of OATT and ATT to PP matrix enhanced significantly the tensile strength (σ_s),and the σ_s of PP/OATT was higher than that of PP/ATT.Moreover,the impact strength of PP/OATT was higher than PP and increased with addition of OATT content from 0 to 1 wt%.In comparison,the impact strength of PP/ATT was inferior to PP.The results of ternary PP /POE/ OATT composites analysis showed that when fixing the weight ratio of OATT/PP to 5/100,when the content of POE was up to 5%,the impact strength of composite reached to 8.91 kJ/m~2,increasing 21.10%;when POE was 15%,the impact strength increased(44.8%),and its tensile strength of composites almost did not change.From the rheological analysis curves,the addition of OATT decreased the melt fluidity of composites obviously in the low shear rate.In addition,differential scanning calorimetry(DSC) analysis confirmed that POE and OATT were effective in promoting the crystallization of PP.
【Fund】: 浙江省重大科技专项资助项目(2006C11172)
【CateGory Index】: TQ325.14
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