PVC /改性埃洛石纳米管纳米复合材料的制备与性能

刘聪 罗远芳 贾德民 贾志欣 郭宝春 李双全 钟邦超

doi:10.3969/j.issn.1000-565X.2011.06.013

华南理工大学学报(自然科学版) >

2011 , Vol. 39 >Issue 6: 71 - 76

DOI: https://doi.org/10.3969/j.issn.1000-565X.2011.06.013

材料科学与技术

PVC /改性埃洛石纳米管纳米复合材料的制备与性能

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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

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．

收稿日期: 2010-10-29

修回日期: 2010-12-14

网络出版日期: 2011-05-06

基金资助

国家自然科学基金资助项目( 50603005)

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Preparation and Properties of Polyvinyl Chloride / Modified Halloysite Nanotubes Nanocomposites

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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

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．

Received date: 2010-10-29

Revised date: 2010-12-14

Online published: 2011-05-06

Supported by

国家自然科学基金资助项目( 50603005)

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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

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刘聪罗远芳贾德民贾志欣郭宝春李双全钟邦超 . PVC /改性埃洛石纳米管纳米复合材料的制备与性能[J]. 华南理工大学学报(自然科学版), 2011 , 39(6) : 71 -76 . DOI: 10.3969/j.issn.1000-565X.2011.06.013

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

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