摘要
采用原位合成和溶液共混相结合的方法,制备了短切碳纤维(C_f)增强纳米羟基磷灰石(hydroxyapatite,HA)/聚甲基丙烯酸甲酯[poly(methyl methacrylate),PMMA]生物复合材料(C_f-HA/PMMA)。重点研究了短切碳纤维对C_f-HA/PMMA复合材料的微观结构和力学性能的影响。采用万能材料试验机测试了C_f-HA/PMMA复合材料的力学性能,使用扫描电子显微镜对材料微观形貌进行了测试和表征。结果表明:采用浓硝酸和二甲基亚砜处理后的碳纤维与PMMA基体的界面结合性得到有效改善,显著提高了C_f-HA/PMMA复合材料的力学性能;碳纤维和HA的质量分数分别为4%和8%,复合材料的弯曲强度、弯曲模量、拉伸强度和压缩强度均达到最佳值。
Short carbon fiber （Cf） reinforced nano-hydroxyapatite （HA）/poly（methyl methacrylate） （PMMA） matrix composites （Cf-HA/PMMA） were prepared by an in-situ processing and solution mixture process. The influences of short carbon fiber on the mechanical properties and microstructure of the Cf-HA/PMMA composites were particularly investigated. The mechanical properties were tested using a universal testing machine. The fracture surface morphologies were characterized using a scanning electron microscope. The results show that the interface bonding between the carbon fiber and PMMA matrix and the mechanical properties of Cf-HA/PMMA composites are obviously improved by surface modification of carbon fiber with nitric acid and dimethyl sulfoxide （DMSO）. When the surface modified carbon fiber and HA mass fraction reaches 4% and 8%, respectively, the flexural strength, flexural modulus, tensile strength, and compressive strength of the as-prepared Cf-HA/PMMA composites reaches the maximum value.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2009年第6期960-963,共4页
Journal of The Chinese Ceramic Society
基金
陕西省教育厅自然科学专项基金(08JK220)
陕西省自然科学基金(ST08-ZT05)
陕西科技大学博士科研基金(BS08-09)
教育部新世纪优秀人才支持计划基金(ENCT-06-0893)资助项目。
关键词
复合材料
聚甲基丙烯酸甲酯
力学性能
短切碳纤维
composites
poly （methyl methacrylate）
mechanical property
short carbon fiber
