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无机材料学报

无机材料学报 >

2009 , Vol. 24 >Issue 3: 475 - 479

DOI: https://doi.org/10.3724/SP.J.1077.2009.00475

研究论文

HA改性短切碳纤维/PMMA生物复合材料力学性能的研究

  • 曾丽平 ,
  • 曹丽云 ,
  • 黄剑锋 ,
  • 郭 申
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  • 1. 陕西科技大学 教育部轻化工助剂化学与技术重点实验室， 西安 710021； 2. 富维薄膜（山东）有限公司， 潍坊 261061

收稿日期: 2008-08-11

  修回日期: 2008-09-25

  网络出版日期: 2009-05-20

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Influence of Nano-hydroxyapatite on the Mechanical Properties of Short-carbon-fiber/Poly(methyl methacrylate) Bio-composites

  • ZENG Li-Ping ,
  • CAO Li-Yun ,
  • HUANG Jian-Feng ,
  • GUO Shen
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  • 1. Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, Shaanxi University of Science and Technology, Xi’an 710021, China; 2. Polyester Films Research & Development Center, Fuwei Films Co. Ltd, Weifang 261061, China

Received date: 2008-08-11

  Revised date: 2008-09-25

  Online published: 2009-05-20

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摘要

采用原位合成与溶液共混的方法，制备了纳米羟基磷灰石(HA)-短切碳纤维（Cf）/聚甲基丙烯酸甲酯(PMMA)生物复合材料, 研究了HA对HA-Cf/PMMA复合材料的力学性能和微观结构的影响. 采用万能材料试验机测试了HA-Cf/PMMA复合材料的力学性能，用X射线衍射仪（XRD）、透射电镜（TEM）、场发射扫描电子显微镜（FESEM）和红外吸收光谱仪(FT-IR)分析测试手段对材料的组成结构及断面的微观形貌等进行了测试和表征. 结果表明，采用卵磷脂改性后的HA纳米片与PMMA基体的界面结合性能得到了有效改善，显著提高了复合材料的力学性能；随着HA含量的增加，HA-Cf/PMMA复合材料的弯曲强度、拉伸强度、压缩强度、弯曲模量和拉伸模量均呈先增大后减小的趋势. 当HA含量在8wt%时，复合材料的力学性能最佳.

关键词： 纳米羟基磷灰石(HA); 生物复合材料; 力学性能

本文引用格式

曾丽平 , 曹丽云 , 黄剑锋 , 郭 申 . HA改性短切碳纤维/PMMA生物复合材料力学性能的研究[J]. 无机材料学报, 2009 , 24(3) : 475 -479 . DOI: 10.3724/SP.J.1077.2009.00475

Abstract

An in-situ processing combined with solution co-mixing approach was developed in the preparation of poly(methyl methacrylate)(PMMA) matrix bio-composites using hydroxyapatite (HA) nano-particles and short carbon fiber (Cf) as reinforced materials. The influences of HA particles on the mechanical properties and microstructures of the HA-Cf/PMMA composites were investigated. The mechanical properties were tested by universal testing machine. The phase compositions and fracture surface morphologies of the asprepared HA-Cf/PMMA composites were characterized using X-ray diffraction (XRD), transmission electron microscope (TEM), field emission scanning electron microscope (FESEM) and Fourier transform infrared spectroscope (FT-IR). The results show that the interface bonding between HA and PMMA matrix and the mechanical properties of HA-Cf/PMMA composites are obviously improved by surface modification of HA with lecithin as coupling agent. With the increase of lecithin-modified HA mass fraction, the flexural strength, tensile strength, compressive strength, flexural modulus and tensile modulus of the as-prepared HA-Cf/PMMA composites firstly increase and then decrease. When the surface modified HA particles mass fraction is 8%, the dispersion of HA nano-particles in PMMA matrix is uniform and the flexural strength, tensile strength, flexural modulus and tensile modulus of the HA-Cf/PMMA composites reach the maximum value.

Key words： nano-hydroxyapatite (HA); bio-composites; mechanical properties

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