应用化学 ›› 1997, Vol. 0 ›› Issue (6): 1-4.

• 研究论文 •    下一篇

LLDPE/EAA共混体系结晶行为及相容性

徐胜清1, 刘卫东1, 黄葆同1, 王新华2, 覃光明2   

  1. 1. 中国科学院长春应用化学研究所, 长春 130022;
    2. 中国兵器工业部西安近代化学研究所, 西安
  • 收稿日期:1997-03-25 修回日期:1997-08-26 出版日期:1997-12-10 发布日期:1997-12-10
  • 基金资助:
    国家自然科学基金;中国科学院长春应用化学研究所高分子物理开放实验室科研基金

Crystallization Behavior and Compatibility of LLDPE/EAA Blends

Xu Shengqing1, Liu Weidong1, Huang Baotong1, Wang Xinhua2, Qin Guangming2   

  1. 1. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022;
    2. Xi'an Modern Chemistry Institute China Weaponry Industry Ministry, Xi'an
  • Received:1997-03-25 Revised:1997-08-26 Published:1997-12-10 Online:1997-12-10

摘要: 通过DMA、DSC、偏光显微镜(PLM)、WAXD及力学性能测试等方法,对线性低密度聚乙烯(LLDPE)/乙烯-丙烯酸共聚物(EAA)共混体系的研究表明,LLDPE与EAA的非晶相可部分相容,结晶相不能形成共晶;共混物结晶时,两组分相互影响,LLDPE的结晶速度高于EAA,两者结晶没有进入对方晶胞中。还发现LLDPE与EAA力学性能上相容。低含量EAA共混体系显示出较佳的力学性能。

关键词: 线性低密度聚乙烯, 乙烯-丙烯酸共聚物, 共混物, 结晶, 相容性

Abstract: The crystallization behavior and compatibility of linear low density polyethylene/ethylene acrylic acid copolymer(139mol% AA content), LLDPE/EAA, blends have been studied by means of DMA, DSC, PLM, WAXD and mechanical property measurements. The results show that the noncrystalline phases of LLDPE and EAA are partially compatible, but they can not cocrystallize. Both two components have effects on the crystallization behavior of the blends. LLDPE crystallizes faster than EAA in the blends. However, they do not enter into others crystal cell. LLDPE and EAA are mechanically compatible. The blends with low EAA content(lower than 40%)show good tensile properties.

Key words: linear low density polyethylene, ethylene-acrylic acid copolymer, blend, crystallization, compatibility