负载型β-成核剂——β-SiO_2对PP结晶熔融行为的影响  

Influence of Coated β-Nucleating Agent β-SiO_2 on Crystalization and Melting Behavior of PP

作　　者：吴剑龙[1] 王浩江[1] 王庆[1] 麦堪成[2] 

机构地区：[1]广州合成材料研究院有限公司,广东广州510665 [2]中山大学化学与化学工程学院,广东广州510275

出　　处：《合成材料老化与应用》2015年第5期15-20,共6页Synthetic Materials Aging and Application

摘　　要：采用纳米二氧化硅为载体,负载庚二酸钙制备具有β-成核作用的β-Si O2,利用DSC和XRD探究β-Si O2用量对PP结晶熔融行为的影响,并用TGA分析β-Si O2中庚二酸钙的含量。研究表明,制备的β-Si O2提高PP的结晶温度并具有高效的β-成核作用,提高添加量即可提高PP中β-晶的含量。质量分数3%的β-Si O2可使PP形成92%的β-晶体,其中庚二酸钙含量为0.0423%,因此负载型β-成核剂β-Si O2比传统的庚二酸钙具有更高的成核效率。In this research,calcium pimelate coated nano-silica（ β-Si O2） was prepared,which has the β-nucleation effect on PP. The influence of β-Si O2 on crystalization and melting behavior of PP was investigated by DSC and XRD. The content of calcium pimelate in β-Si O2 was analyzed by TGA. The results indicated that β-Si O2 raises the crystalization temperature and the content of β-crystal of PP. The content of β-crystal increases along with the increase of β-Si O2. There was 92% β-crystal in PP while the usage of β-Si O2 was 3wt%,wherein the content of calcium pimelate was 0. 0423%. Therefore,β-Si O2 shows higher efficiency on β-nucleation effect on PP than calcium pimelate.

关 键 词：聚丙烯 β-成核剂 二氧化硅 庚二酸钙 结晶 熔融 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业]