导电炭黑/聚酯复合材料的等温结晶行为  

Isothermal crystallization behavior of conductive carbon black/polyester composites

作　　者：孙福[1] 钱建华[1] 凌荣根[1] 张国庆[1] 孙艳秋[2] 王铁军 

机构地区：[1]浙江理工大学材料与纺织学院,浙江杭州310018 [2]中国石油吉林石化公司研究院,吉林吉林132021 [3]荣盛石化股份有限公司,浙江杭州311247

出　　处：《纺织学报》2009年第11期24-28,共5页Journal of Textile Research

基　　金：先进纺织材料与制备技术教育部重点实验室(浙江理工大学)优秀青年人才培养基金资助项目(2007QN21);荣盛石化股份有限公司科技合作资助项目(0601210)

摘　　要：通过广角X射线衍射仪、差示扫描量热仪测试导电炭黑/聚酯(CB/PET)复合材料的结晶行为,应用Avrami方程分析其等温结晶动力学。结果表明:CB/PET比纯PET具有更完善的结晶和更高的结晶度;随着结晶温度的升高以及CB质量分数的增加,CB/PET的结晶速率明显提高;与纯PET相比,CB/PET的结晶速率、晶粒尺寸和结晶度增加;Avrami参数(n,K,t1/2)对结晶温度非常敏感,n、K随着温度的升高而增加,而t1/2随温度的升高而减小,在相同的结晶温度下,n、t1/2都随着CB质量分数的增加而减小。The crystallization property of the conductive carbon black/polyester （CB/PET） composites was tested by wide angle X-ray diffractometer and differential scanning calorimetry, and the kinetics of isothermal crystallization was analyzed with Avrami equation. The results showed that CB/PET has more perfect crystals and higher crystallinity degree than pure PET. The crystallization rate of CB/PET increases obviously with increasing of crystallization temperature and mass fraction of CB in composites. Compared with pure PET, the crystallization rate, the crystallite size and the crystallinity degree of CB/PET have been increased. The Avrami parameters （n, K, and t1/2） are very sensitive to the crystallization temperature, and the values of n and K for PET and CB/PET are found to increase with increasing of the temperature while t1/2 decreases. At the same crystallization temperature for all the samples, both n and t 1/2 go down with increasing of the mass fraction of CB in composites.

关 键 词：导电炭黑 聚酯 导电母粒 广角X射线衍射 结晶动力学 

分 类 号：TQ342.83[化学工程—化纤工业]