摘要
以丙烯腈基短切碳纤维(C(f))为增强相、纳米羟基磷灰石( HA)为改性体,并以聚甲基丙烯酸甲酯(PMMA)为基体,采用原位合成与溶液共混相结合的方法制备了C(f)/ HA-PM-MA生物复合材料.用红外吸收光谱(FT-IR)、扫描电子显微镜(SEM)和能谱仪(EDS)等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与表征,使用万能材料试验机测试了其力学性能.结果表明:该合成工艺可以保证短切碳纤维和HA在基体PMMA中均匀分布;与纯PMMA相比,所制备的复合材料具有较好的弯曲强度和弯曲模量,当碳纤维含量为4 %,HA含量为2 %时复合材料的弯曲强度达到极大值97 .41 MPa .
An in-situ polymerizing and solution co-mixing approach was used in the formation of poly （methyl methacrylate） （PMMA） matrix composites using hydroxyapatite （HA） nano-particles and short carbon fibers （C（f）） as reinforcing materials. The microstructures and fracture surface morphologies of the composite were characterized using XRD, FT-IR, SEM and EDS analyses. The flexural properties were tested by a universal testing machine. Results show that the uniform dispersion of short carbon fibers and HA nano-particles in PMMA matrix is achieved. The stress-strain curves of as-prepared C（f）/HA-PMMA composites indicate that excellent flexural strength and modulus are achieved. The flexural strength will reach the maximum value of 97. 41 MPa when fiber and HA mass content arrive to 4 % and 2%.
出处
《陕西科技大学学报（自然科学版）》
2008年第3期20-24,共5页
Journal of Shaanxi University of Science & Technology
基金
教育部新世纪优秀人才支持计划基金(NECT-06 -0893)
陕西省自然科学基金资助课题
