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碳纳米管聚合物复合材料的力学性质
  • 期刊名称：高分子材料科学与工程
  • 时间：0
  • 页码：134-136+140
  • 语言：中文
  • 分类：TB383[一般工业技术—材料科学与工程]
  • 作者机构：[1]大连理工大学工程力学系,工业装备与结构分析国家重点实验室,辽宁大连116024, [2]天津大学力学系,天津300072, [3]大连理工方学材料系,辽宁大连116024
  • 相关基金：国家自然科学基金资助项目（10502014,50704009和10732080）
  • 相关项目：微纳尺度实验力学中的传感、测量、识别新方法研究
作者： 雷振坤|潘学民|亢一澜|仇巍|李秋|
关键词： 多壁碳纳米管/环氧树脂纳米复合材料, 分散, 力学性质, MWNTs/epoxy nanocomposite, dispersion, mechanical properties
中文摘要：

用二甲基甲酰胺表面活性剂来超声分散多壁碳纳米管，制备成碳纳米管增强的环氧树脂基聚合物。常温下力学性能测试表明，随着碳纳米管含量的增加，其弹性模量先增后降。在50℃时，对于碳纳米管含量≤1％（质量分数）的复合材料，经历了可逆的粘弹性阶段后进入塑性变形，且温度对复合材料的弹性模量和拉伸强度影响较大；而对于碳纳米管含量〉1％的复合材料，其力学性能反而发生退化。

英文摘要：

N,N-dimethylformamide surfactant methanol solution was developed to functionalize the surface of multi-waled carbon nanotubes （MWNTs）. Carbon nanotubes reinforced epoxy composites with different concentrations were fabricated by sonicating funetionalized MWNTs solution to epoxy resin. Stress-strain behavior of the composites at room temperature shows its elastic modulus firstly increases and then decreases with the loading. At 50 ℃, the composites undergoes from the reversible visco-elasticity to plasticity and its elastic modulus, tensile strength affected clearly by temperature for the loading lower than 1%. For more than 1% loading, however, the mechanical properties degenerate clearly.

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