华南理工大学学报(自然科学版) ›› 2011, Vol. 39 ›› Issue (6): 71-76.doi: 10.3969/j.issn.1000-565X.2011.06.013

• 材料科学与技术 • 上一篇    下一篇

PVC /改性埃洛石纳米管纳米复合材料的制备与性能

刘聪1 罗远芳1 贾志欣1† 钟邦超1 郭宝春1 李双全2 贾德民1   

  1. 1.华南理工大学 材料科学与工程学院,广东 广州 510640; 2.新疆天业集团有限公司,新疆 石河子 832014
  • 收稿日期:2010-10-29 修回日期:2010-12-14 出版日期:2011-06-25 发布日期:2011-05-06
  • 通信作者: 贾志欣( 1980-) ,男,博士,副研究员,主要从事高分子材料制备、结构与性能研究. E-mail: jzhixin@163. com E-mail:liucong_011@163.com
  • 作者简介:刘聪(1983-) ,女,博士生,主要从事高分子材料合成、制备与改性研究.
  • 基金资助:

    国家自然科学基金资助项目( 50603005)

Preparation and Properties of Polyvinyl Chloride / Modified Halloysite Nanotubes Nanocomposites

Liu CongLuo Yuan-fangJia Zhi-xinZhong Bang-chaoGuo Bao-chunLi Shuang-quanJia De-min1   

  1. 1. School of Materials Science and Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China; 2. Xinjiang Tianye Group Corporation,Ltd.,Shihezi 832014,Xinjiang,China
  • Received:2010-10-29 Revised:2010-12-14 Online:2011-06-25 Published:2011-05-06
  • Contact: 贾志欣( 1980-) ,男,博士,副研究员,主要从事高分子材料制备、结构与性能研究. E-mail: jzhixin@163. com E-mail:liucong_011@163.com
  • About author:刘聪(1983-) ,女,博士生,主要从事高分子材料合成、制备与改性研究.
  • Supported by:

    国家自然科学基金资助项目( 50603005)

摘要: 采用硅烷偶联剂γ-甲基丙烯酰氧丙基三甲氧基硅烷( MPS) 对埃洛石纳米管( HNTs) 进行表面改性,并以改性埃洛石纳米管( m-HNTs) 填充硬质聚氯乙烯( PVC) 制备聚氯乙烯/改性埃洛石纳米管( PVC /m-HNTs) 纳米复合材料.傅里叶变换红外光谱分析、热重分析以及X 射线光电子能谱分析证明埃洛石纳米管表面负载了硅烷偶联剂; 扫描电镜结果表明,m-HNTs 在PVC 中分散均匀,PVC /m-HNTs 纳米复合材料的断面呈现较大的塑性变形,表现出韧性断裂的特征; 实验表明,m-HNTs 对PVC 同时起到了增韧和增强的作用,特别是使冲击强度大幅度提高,与添加未改性HNTs 的材料相比,PVC /m-HNTs 纳米复合材料具有更高的力学性能和模量; m-HNTs 对复合材料热性能的提高和加工性能的改善也有一定的效果.

关键词: 纳米复合材料, 埃洛石纳米管, 聚氯乙烯, 表征, 力学性能

Abstract:

Modified halloysite nanotubes ( m-HNTs) were obtained by taking methacryloxypropyltrimethoxysilane ( MPS) as the silane coupling agent,and were compounded with polyvinyl chloride ( PVC) to prepare PVC / m-HNTs nanocomposites. Then,the properties of m-HNTs were characterized by means of FT-IR,TGA and XPS. It is found that the HNTs are successfully modified by MPS. SEM photographs show that m-HNTs uniformly disperse in PVC matrix,and that the fracture surfaces of the nanocomposites exhibit severe plastic shear deformation and ductile fracture. Moreover,experimental results indicate that ( 1) m-HNTs are effective in toughening and reinforcing PVC nanocomposites,especially in improving the impact strength; ( 2) PVC /m-HNTs nanocomposites are of better mechanical properties and higher modulus,as compared with PVC /HNTs nanocomposites; and ( 3) m-
HNTs can also improve the thermal stability and rheological property of the nanocomposites.

Key words: nanocomposite, halloysite nanotube, polyvinyl chloride, characterization, mechanical properties