煤矸石/聚丙烯复合材料的非等温结晶动力学
Non-isothermal Crystallization Kinetics of PP/Coal Gangue Composites
摘 要
利用差示扫描量热仪(DSC)对不同含量的煤矸石填充聚丙烯(PP)复合材料的非等温结晶行为进行了表征, 并采用Jeziorny法进行动力学处理, 对其结晶过程的迁移活化能用Kissinger法进行了计算。结果表明: 相同的降温速率时, 复合材料的结晶温度高于纯PP的; 复合材料的结晶速率随煤矸石质量分数的增加先上升后降低, 在15 %处出现峰值; 复合材料的结晶迁移活化能也随煤矸石质量分数的增加先上升后降低, 在5%处出现最大值。
煤矸石
非等温结晶动力学
polypropylene
coal gangue
non-isothermal crystallization kinetics
Abstract
The non-isothermal crystallization behaviour of coal gangue filled polypropylene(PP) composites with different coal gangue contents was investigated using differential scanning calorimetry (DSC), and then was treated using Jeziorny equation. And the diffusion activation energy of composites during non-isothermal crystallization was calculated by Kissinger method. The results show the crystallization temperature of composites was higher than that of pure PP at the same cooling rate. Crystallization rate of composites had a decline trend after an initial ascent with the increase of coal gangue content and reached a peak while coal gangue content was 15wt.%. The diffusion activation energy of PP/coal gangue composites first increased and then decreased along with the increase of the coal gangue content and reached a peak while coal gangue content was 5wt.%.
中图分类号 TQ325.14
所属栏目 新材料新工艺
基金项目 河南省安全生产科技发展计划项目(H12-089); 河南理工大学博士基金资助项目(B2013-010); 国家级大学生创新创业训练计划项目(201210460017); 河南省高等学校矿业工程材料重点实验室开放基金资助项目(MEM11-10)
收稿日期 2012/9/14
修改稿日期 2013/8/19
网络出版日期
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备注曹新鑫(1979-), 男, 山西临汾人, 副教授, 博士。
引用该论文: CAO Xin-xin,ZHANG Yan-zhu,HE Chao-feng,HE Xiao-fang,WANG You. Non-isothermal Crystallization Kinetics of PP/Coal Gangue Composites[J]. Materials for mechancial engineering, 2013, 37(10): 50～54
曹新鑫,张艳珠,贺超峰,何小芳,王优. 煤矸石/聚丙烯复合材料的非等温结晶动力学[J]. 机械工程材料, 2013, 37(10): 50～54
被引情况:
【1】马壮,陶莹,杨杰,张莉,李智超, "以煤矸石为渗硅剂在工业纯铜表面制备渗硅层的冲蚀磨损性能",机械工程材料 38, 71-75(2014)
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参考文献
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【3】LIU Y, XIE B H, YANG W, et al. The composition, morphology, and mechanical properties of ethylene propylene diene monomer-encapsulated coal ganguepowder/polypropylene composites[J].Polymer Composites, 2010, 31(1): 10-17.
【4】龚关, 谢邦互, 李忠明, 等.煤矸石粉填充聚丙烯复合材料的性能[J].塑料工业, 2004, 32(1): 13-16.
【5】JEZIORNY A. Parameters characterizing the kinetics of the non-isothermal crystallization of poly (ethylene terephthalate) determined by DSC[J].Polymer, 1978, 19(10): 1142-1144.
【6】蒙日亮, 伍玉娇, 何辉, 等.PP/PA6/OMMT纳米复合材料的非等温结晶动力学[J].高分子材料科学与工程, 2011, 27(3): 92-100.
【7】SHARPLES A. Introduction to polymer crystallization[M].London: Edward Arnold, 1996: 122-127.
【8】李 浩, 胡建设, 钞春英, 等.液晶共聚物成核剂改性聚丙烯的非等温结晶动力学[J].高分子材料科学与工程, 2010, 26(4): 89-96.
【9】KISSINGER H E. Reaction kinetics in differential thermal analysis[J].Analytical Chemistry, 1957, 29(11): 1702-1706.
【10】杨森, 周正发, 任凤梅, 等.聚丙烯/硬石膏复合材料的非等温结晶动力学[J].高分子材料科学与工程, 2008, 24(2): 63-66.
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