羧基改性羟基磷灰石晶须复合纸张的物理性能研究

以水热法制备表面接枝羧基的改性羟基磷灰石晶须（HAPNW），在无添加剂条件下抄造羧基改性HAPNW修饰的复合纸张，并考察复合纸张的介电性能和物理性能。结果表明，羧基改性HAPNW加填量为10 wt%时，复合纸张的抗张指数高达122 N·m/g，耐压值达630.4 V。向改性HAPNW制备体系中添加5.0 wt%聚乙二醇（PEG2000），复合纸张击穿强度最大，为11.4 MV/m。此外，本研究初步探讨了羧基改性HAPNW复合纸张强度性能提升的机理，可为无机填料纸张的复合改性和绝缘纸设计提供参考。

Study on Physical Properties of Composite Papers Modified by Carboxyl-modified Hydroxyapatite Nanowire

Hydroxyapatite nanowire(HAPNW)grafted with carboxyl groups were prepared by hydrothermal method,which was then used to prepare HAPNW modified composite paper and its dielectric and mechanical properties were investigated as well.The results showed that when the additive amount of HAPNW was 10 wt%,the tensile index and the maximum breakdown voltage of the modified composite paper was 122 N?m/g and 630.4 V,respectively.The breakdown strength of modified composite paper was up to 11.4 MV/m with addition of 5.0 wt%PEG2000.Furthermore,the strength improving mechanism of the modified HAPNW composite paper was generally discussed,so as to provide references for the modification of paper with inorganic fillers and design of insulation paper.