碳纤维增强聚砜颅骨修补材料的物理力学性能研究

Study on the Physical and Mechanical Properties of Carbon Fibers Reinforced Polysulfones for Skull Prosthesis

对碳纤维增强聚砜（ＣＦ／ＰＳＵ）颅骨修补材料的物理力学性能进行了研究。结果表明，随着ＣＦ含量的增加，ＣＦ／ＰＳＵ复合材料的密度ρｃ增大，线膨胀系数α、熔体指数ＭＩ、体积电阻率ρｖ均减小，且ρｃ及ρｖ的变化分别符合公式：ρｃ＝１．２４３＋０．４０５ＷＣＦ，及ｌｇρｖ＝１６．７１７－２０．１８８ＷＣＦ（ＷＣＦ为ＣＦ的重量百分数）。当ＣＦ含量在０～２５（Ｗｔ．％）范围内，ＣＦ／ＰＳＵ复合材料的力学性能均随ＣＦ含量的增加而增加。对于ＣＦ含量为３０（ｗｔ％）的ＣＦ／ＰＳＵ材料，其拉伸强度、弹性模量、弯曲强度、缺口冲击强度分别为２０４．７８ＭＰａ、１．９８８ＧＰａ、１６２．０ＭＰａ、２８．８８ｋＪ／ｍ２．

n this poper, the physical and mechanical properties of carbon fibers reinforced polysulfones for skull prosthesis were investigated. The results of study proclaimed that the demity ρc of CF/PSU composites increased, the linear expansion co6fficient α, melt index (MI) and the volume electrical resistance ρv decreased with the increase of carbon fiber content, ρc=1.243+0.405WCF and lg ρv=16.717-20.188 WCF respectively, where WCF was the weight percent of carbon fibers. The mechanical properties of CF/PSU composites increased with the content of carbon fibers from 0～25 weight percent. The tensile strength、 elastic modulus、 flexural strength and notched impact strength of CF/PSU composite,which the content of carbon fibers was 30 weight percent, were 204.78MPa, 1.988 GPa, 162.0 MPa and 28.88 kJ/m2 respectively.