高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (10): 1975-1977.

• 研究简报 • 上一篇    下一篇

紫外辐照官能化LLDPE及改性尼龙66的研究

吴石山1, 冉千平1, 罗艳玲1, 沈健1,2   

  1. 1. 南京大学化学化工学院,南京210093;
    2. 南京师范大学化学和环境科学学院,南京210097
  • 收稿日期:2004-10-20 出版日期:2005-10-10 发布日期:2005-10-10
  • 基金资助:

    国家重点基础研究专项经费(批准号:G1999064809);南京大学大型仪器开放测试基金(批准号:0205001324)资助.

A Study of Ultraviolet Irradiation Functionalization of LLDPE and Its Modification of PA66

WU Shi-Shan1, RAN Qian-Ping1, LUO Yan-Ling1, SHEN Jian1,2   

  1. 1. College of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210093,China;
    2. College of Chemistry and Environment Science,Nanjing Normal University,Nanjing 210097,China
  • Received:2004-10-20 Online:2005-10-10 Published:2005-10-10

关键词: 线性低密度聚乙烯(LLDPE), 含氧基团, PA66/辐照LLDPE共混物

Abstract: The oxygen-contained groups such as C—O,C—OH,CO,C(O)O and C(O)OH are introduced onto the molecular chains of linear low density polyethylene(LLDPE) through ultraviolet irradiation at environmental temperature of 70 ℃ in air without adding any additives.The concentration of these groups increases with the iucrease of irradiation time.The gel appears in irradiated LLDPE,the gel content increases with the iucrease of irradiation time.The melt flow index decreases and reach minimum when the irradiation time is 24 h,and then increase.The interfacial adhesion between irradiated LLDPE and polyamide 66(PA66) and the mechanical properties of the PA66/irradiated LLDPE(80/20) blends are improved owing to the oxygen-contained polar groups introduced.Compared with those of PA66/LLDPE(80/20) blends,the tensile strength,Young's modulus,bending strength and notch impact strength of PA66/irradiated LLDPE(80/20) blends for 24 h are increased from 48.3,908,64.8 MPa and 31 J/m[PA66/LLDPE(80/20)blend] to 62.0,984,83.1 MPa and 85 J/m,respectively.

Key words: Linear low density polyethylene(LLDPE), Oxygen-contained groups, PA66/irradiated LLDPE blends

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