废弃PET对β-PP的β-成核作用影响的研究  

Effect of recycled PET on β-nucleation of β-PP

作　　者：王春广[1] 潘永兴[1] 章自寿[1] 张均萍[1] 麦堪成[1] 

机构地区：[1]中山大学化学学院材料科学研究所教育部聚合物基复合材料及功能材料重点实验室,广东广州510275

出　　处：《材料研究与应用》2010年第4期626-630,共5页Materials Research and Application

基　　金：国家基金(50873115);广东省科技计划重点项目(2008A010500003);高等学校博士生学科点专项科研基金资助

摘　　要：为研究废弃PET(rPET)对β-PP中β-成核作用的影响,采用不同方法制备了rPET/β-PP共混物,用DSC方法研究了不同制备方法、不同rPET与负载β-成核剂用量、熔融温度及时间,降温速率等对PP中β-成核作用的影响.结果表明,在rPET结晶后加入β-成核剂,可得到高β-晶含量的rPET/β-PP共混物;rPET含量高共混物中PP主要形成α-晶,β-成核剂用量高有利于得到β-晶;熔融温度高,熔融时间长,降温速率快,有利于β-PP-成核作用.In order to investigate the effect of recycled PET on β-nucleation in β-PP blends,recycled PET/β-PP blends were prepared by different methods. The effect of the preparation methods,the content of recycled PET and β-nucleating agent,melting temperature and time,as well as cooling rate on β-nucleation in β-PP blends were investigated by DSC. The results indicated that the blends with high content of β-PP were obtained by adding of β-nucleating agent into PP melt in which the PET has crystallized. The increased β-nucleating agent content,melting temperature and time,as well as decreased cooling rate increased the β-nucleation and the content of β-PP.

关 键 词：β-PP β-成核作用 废弃PET 

分 类 号：O631.3[理学—高分子化学]