氧化硼对聚磷酸钙纤维力学和降解性能的影响

采用熔融拉丝法制备聚磷酸钙纤维(Calcium Polyphosphate Fibers, CPPF)。探究不同质量分数的B₂O₃对CPPF的降解性能和力学性能的影响。利用傅立叶红外光谱仪、扫描电子显微镜(SEM)等对材料的结构及其性能进行表征。研究表明：随着B₂O₃质量分数的增加, CPPF的拉伸强度和模量有了明显的提高, 但纤维表面变得粗糙; 同时CPPF的阻降性能随着B₂O₃含量的升高而提高, 且降解后的纤维表面的裂纹减少。B₂O₃具有较优的阻降效果, 当B₂O₃的添加量为9%时, 其拉伸强度和模量比未添加的CPPF提高了146%和153%; 在降解16 d后, 其质量损失率相对于未添加的CPPF减少了31%。

Boron Oxide on Mechanical and Degradation Property of Calcium Polyphosphate Fibers

Calcium polyphosphate fibers (CPPF) were prepared by melt-drawing method. Effect of B₂O₃ with different mass fraction on degradation and mechanical properties of CPPF was studied. The obtained CPPF were characterized by Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). Results showed that tensile strength and modulus of CPPF were improved obviously with increase of mass fraction of B₂O₃. Moreover, the surface morphology of CPPF was influenced by the introducing of B₂O₃. In addition, the degradation ratio and cracks on the surface of CPPF decreased with increase of B₂O₃ content. Tensile strength and modulus of CPPF with B₂O₃ loading of 9% increased sharply by 146% and 153% compared to neat CPPF, respectively. After 16 d, the mass loss ratio of CPPF with B₂O₃ loading of 9% in the degradation process is reduced by 31% compared to the neat CPPF.