应用化学 ›› 1995, Vol. 0 ›› Issue (2): 76-79.

• 研究论文 • 上一篇    下一篇

浇铸尼龙-6的结晶与熔融

曲桂杰, 唐功本, 杨玉华, 刘景江   

  1. 中国科学院长春应用化学研究所, 长春 130022
  • 收稿日期:1994-07-19 修回日期:1994-10-18 出版日期:1995-04-10 发布日期:1995-04-10
  • 基金资助:
    国家自然科学基金资助课题

Melting and Crystallization of MC Nylon-6

Qu Guijie, Tang Gongben, Yang Yuhua, Liu Jingjiang   

  1. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022
  • Received:1994-07-19 Revised:1994-10-18 Published:1995-04-10 Online:1995-04-10

摘要: 用DSC法研究了La2O3和Y2O3对浇铸尼龙-6(MC尼龙-6)结晶与熔融的影响.二者都使MC尼龙-6熔体等速降温的结晶温度Tc升高、等速升温的溶点Tm降低、结晶度Xc降低,拉伸过程的断裂能密度及断裂伸长率提高.La2O3使MC尼龙-6平衡熔点Tm0降低,结晶速率增加,结晶完善程度变差.Y2O3使MC尼龙-6的Tm0升高,它可显著改善MC尼龙-6的耐热性.

关键词: MC尼龙, 结晶, 熔融, 尼龙改性剂, 平衡熔点

Abstract: The influences of addition of La2O3 and Y2O3 on the crystallization and melting be-havior of MC nvlon-6 have been studied by DSC technique at a rate of 10℃/min.Both rareearth oxides increased the crvstallization temperattire Tc and decreascd the melting tempera-ture Tm of MC nylon-6,decreased the crystallinity Xc. Addition of La2O3 decreased the equilibrlum melting temperature Tm0,leading to the increased crystallization rate and imperfectness of the crvstallization. Adtlition of Y2O3 increased the Tm0,remarkedly improving thethermal stability of MC nylon-6.

Key words: MC nylon, crystallization, melting, La2O3, Y2O3