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用挤出法制备石英纤维(quanz fibre,QF)/纳米羟基磷灰石(nano-hydroxyapatite,n-HA)/聚酰胺66(polyamide 66,PA66)复合材料(OF/n-HA/PA66),表征了其结构、形貌、力学性能和细胞毒性。结果表明:QF均匀地分散在n-HA/PA66中,且与PA66基体存在氢键结合;复合材料的力学性能随着石英纤维含量的增加而增大,当石英纤维含量为38%时复合材料的抗拉强度为81 MPa,抗压强度为190 MPa,抗弯强度为195 MPa(比人体皮质骨的高);n-HA/PA66基体所承受的载荷传递给QF纤维,纤维轴向传递使应力迅速扩散,这种传递作用在一定程度上起到了力的分散作用,从而增强了材料承受外力作用的能力,导致材料的弯曲强度、拉伸强度等力学性能的显著提高。QF/n-HA/PA66复合材料无细胞毒性,满足承重骨修复材料的要求。
The quanz fiber (QF) / nano-hydroxyapatite (n-HA) / polyamide 66 (PA66) composite (OF / n-HA / PA66) Characterization of its structure, morphology, mechanical properties and cytotoxicity. The results show that QF is uniformly dispersed in n-HA / PA66 and has hydrogen bond with PA66 matrix. The mechanical properties of the composites increase with the increase of quartz fiber content. When the content of quartz fiber is 38% The tensile strength was 81 MPa, the compressive strength was 190 MPa and the flexural strength was 195 MPa (higher than that of human cortical bone). The load of n-HA / PA66 matrix was transferred to QF fibers. The rapid spread of stress, the transfer effect to a certain extent, played a force of dispersion, thereby enhancing the ability of materials to withstand external forces, resulting in the material flexural strength, tensile strength and other mechanical properties significantly improved. QF / n-HA / PA66 composite material without cytotoxicity, to meet the requirements of the load-bearing bone repair materials.