插层剂对PA66／蒙脱土纳米复合材料性能影响  

Effect of Intercalating Agents on Properties of Nylon66/ Montmoriilonite Nanocomposites

作　　者：李跃文[1] 陈如意[2] 邱德跃[2] 苏海全[3] 苏胜培[2] 

机构地区：[1]湖南科技职业学院,湖南长沙410118 [2]湖南师范大学化学化工学院,湖南长沙410081 [3]内蒙古大学化学化工学院,内蒙古呼和浩特010021

出　　处：《现代塑料加工应用》2007年第2期48-51,共4页Modern Plastics Processing and Applications

基　　金：国家自然科学基金资助项目(50362002)。

摘　　要：将不同插层剂改性的蒙脱土与尼龙66(PA66)通过熔融共混制得了纳米复合材料,对复合材料的热变形温度和力学性能进行了研究。结果表明,与纯PA66相比,3种插层剂改性的蒙脱土／PA66纳米复合材料的热变形温度、弯曲模量、弯曲强度均有明显提高,拉伸模量和屈服强度也有所提高,但断裂伸长率和缺口冲击强度则明显下降;含极性羟基的插层剂对复合材料的综合改性效果较好,含2个长链非极性烃基的插层剂改性效果较差;加入环氧树脂后,复合材料的热变形温度、拉伸模量和弯曲模量有所降低,屈服强度、弯曲强度、断裂伸长率和缺口冲击强度则有所增加。Nylon66/montmorillonite nanocomposites were prepared by meh blending different organically modified montmorillonites with nylon66 correspondingly. The heat distortion temperature and mechanical properties of the composites were studied. The resuhs reveal that the properties of these nanocomposhes such as heat distortion temperature, fIexuraI modulus, fIexuraI strength increase significantly, and tensile modulus, yield strength increase slightly, while notch impact strength and elongation decrease unfortunately . The experiementaI data show an improvement of properties of composites for the modifiers containing hydroxy group and a decrease of properties for the modifier containing two long-chain aIkyI groups. The addition of epoxy resin decreases the properties of corresponding compos- ites such as heat distortion temperature, tensile modulus and fIexuraI modulus of nanocomposites while yield strength, fIexuraI strength, elongation and notch impact strength are enhanced.

关 键 词：尼龙66 蒙脱土 纳米复合材料 插层剂 

分 类 号：TB383.1[一般工业技术—材料科学与工程]