不饱和聚酯酰胺树脂/聚磷酸钙纤维复合材料及性能研究

通过熔融缩聚法合成出一种低成本的不饱和聚酯酰胺树脂并表征了其性能,以此为基体,以聚磷酸钙纤维(CPPF)为增强体,引入20 %的交联剂乙酸乙烯酯、0.1%~0.3%的引发剂过氧化苯甲酰和0.1%~0.3%的促进剂N，N-二甲基苯胺室温交联后在195℃下深度交联成可完全降解不饱和聚酯酰胺树脂/CPPF复合材料,并研究了其力学和降解性能。结果表明, 随着CPPF含量的增加, 不饱和聚酯酰胺树脂/CPPF复合材料的力学性能尤其是冲击强度有大幅度的提高,但当CPPF含量超过60 %（质量分数，下同）时,复合材料的力学性能出现下降的趋势;复合材料在模拟体液环境中降解7周后,降解介质的pH和Ca2+浓度保持一个恒定值,降解3个月后含30 %和50 %CPPF的复合材料的弯曲强度分别能保持143、148 MPa。

Research on Unsaturated Poly(ester-amide) Resin/Calcium Phosphate Fibers Composites and Its Properties

A unsaturated poly(ester-amide) resin was synthesized via melt polycondensation. Into the poly(ester-amide) calcium polyphosphate fiber (CPPF), a crosslinking agent and an initiator-accelerant agent was introduced, cured at room temperature, the system was transformed to a cross-linked composite. Thus obtained composite could be completely degraded. With increasing CPPF content, strength, especially impact strength was greatly improved, however, when the CPPF content exceeded 60 %, the mechanical strength of the composite showed some decrease. Soaked the composite in a simulated body fluid environment, the pH and Ca2+ concentration could maintain constant values for 7 weeks. After degradation in above body fluid for 3 months, the composites containing 30 % and 50 % CPPF still maintained 143 and 148 MPa, respectively, of bending strength.