成核剂对PTT结晶行为的影响.pdfVIP

{ eVieW 研究论文(Articles) 囡墨蟹盈髓 豳 粒鳓越嘲邈幽潮豳趣嗡盛衄嘲囱 “ 成核剂对PTT结晶行为的影响 徐 勇’，贾红兵’，祝根平。，俞成良’，杜延博’，叶胜荣。 1．南京理工大学化工学院，南京210094 2。杭州师范大学材料与化工学院，杭州310036 3．浙江大学高分子科学与工程学系．杭州310027 【摘要】 采用差示扫描量热(DSC)、解偏振光强度(DLI)和偏光显微镜(POM)等方法研究了含不同成核剂聚对苯二甲酸丙二醇酯 (P1_r)的结晶行为。结果显示。成核剂的加入对 P1_r的熔融结晶温度、等温结晶速率和结晶形貌等均有影响。成核剂可在一定程度上促 进P1_r的结晶。其中滑石粉的效果最明显。苯甲酸钠的效果最差。 【关■词】聚对苯二甲酸丙二醇酯；成核剂；结晶 【中圈分类号】O631 【文献标识码】A 【文章组号】1000—7857(2007)24—0040—04 Effect of Nucleation Agent on Crystallization Behavior of Poly(trimethylene terephthalate) XU Yong’，JIA Hongbing’，ZHU Genping ，YU Chengliang’，DU Yanbo’，YE Shengrong。 1．School of Chemical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China 2．College of Materials，Chemistry and Chemical Engineering,Hangzhou Normal University,Hangzhou 31003~China 3。Department of Polymer Science and Engineering,Zhejiang University,Hangzhou 310027,China Abstract：The crystallization behavior of polyftrimethylene terephthalate)(Prr)containing various nucleation agents was studied by means of Differential Scanning Calorimetry(DSC)，Depolarized Light Intensity(DLI)technique and Polarized Light Microscopy fPLM)．The results show that the onset temperature of melting crystallization，isothermal crystallization rate and crystallization morphology are affected by the incorporation of nucleation agent．The nucleation agents can promote the crystallization of m and the talcum powder iS the most efficient while the sodium benzoate the least efficient among the nucleation agents investigated． Key Words：poly(trimethylene terephthalate)；nucleation agent；crystallization CLC Number：063 1 Doeument C4xteA Article ID：1000—7857(2007)24—0040—04 0引言