中国塑料

中国塑料 ›› 2008, Vol. 22 ›› Issue (09): 28-33.DOI: 10.19491/j.issn.1001-9278.2008.09.006

• 材料与性能 • 上一篇    

硅烷交联POE的非等温结晶动力学研究

焦传梅   

  1. 青岛科技大学环境与安全工程学院
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-09-26 发布日期:2008-09-26

Non-isothermal Crystallization Kinetics of Silane Crosslinked Ethylene-octene Copolymer

JIAO Chuan-mei   

  1. College of Environment and Safety Engineering, Qingdao University of Science and Technology
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-09-26 Published:2008-09-26
  • Contact: JIAO Chuan-mei

摘要： 通过差示扫描量热法（DSC）研究了乙烯-1-辛烯共聚物（POE），过氧化二异丙苯改性POE和硅烷交联POE的非等温结晶动力学。应用Avrami法和莫志深法分别对POE，DCP改性POE和硅烷交联POE进行了非等温结晶动力学的计算。Avrami方法计算得到的结晶速率常数Zc和半结晶时间t1/2表明在同一降温速率下，随着POE的交联程度增加，Zc值减小，而t1/2则增大，结晶速率随POE交联程度的增加而降低，随降温速率增加而增加。莫志深方法计算结果表明，达到相同的结晶度，交联POE所需的降温速率要大于纯POE所需的降温速率，说明交联POE的结晶速率要低于纯POE的结晶速率。

关键词: 乙烯-辛烯共聚物, 非等温结晶, 结晶动力学, 硅烷交联

Abstract: The non-isothermal crystallization kinetics of virgin ethylene-octene copolymer (POE), dicumyl peroxide (DCP) crosslinked POE, and silane crosslinked POE and were studied using differential scanning calorimetry at different cooling rates. Avrami and the Mo methods were applied to describe the crystallization data. The values of half-time of crystallization t1/2, and the parameter Zc estimated by Avrami method showed that the crystallization rates of virgin POE and DCP crosslinkeded POE were higher than that of silane crosslinked POE at the same cooling rate. For all the samples, the crystallization rate increased with increasing cooling rate. With Mo method, it found that the F(T) values of virgin POE and DCP crosslinked POE were lower than that of silane crosslinked POE, indicating the latter possessed the lowest crystallization rate.

Key words: ethylene-octene copolymer, non-isothermal crystallization, crystallization kinetics, silane crosslinked

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