Morphology, crystallization and dynamic mechanical properties of PA66/nano-SiO2 composites

Bulletin of materials science

Huimin Lu¹  Xiaohong Li¹  Xiangmin Xu¹  Zhijun Zhang¹ 

[1] Key Lab for Special Function Material, Henan University, Kaifeng 475001, China$$Key Lab for Special Function Material, Henan University, Kaifeng 475001, ChinaKey Lab for Special Function Material, Henan University, Kaifeng 475001, China$$

关键词: Polyamide 66;    nano-SiO2;    morphology;    crystallization;    dynamic mechanical properties.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

This article addresses the effect of nano-SiO₂ on the morphology, crystallization and dynamic mechanical properties of polyamide 66. The influence of nano-SiO₂ on the tensile fracture morphology of the nanocomposites was studied by scanning electron microscopy (SEM), which suggested that the nanocomposites revealed an extensive plastic stretch of the matrix polymer. The crystallization behaviour of polyamide 66 and its nanocomposites were studied by differential scanning calorimetry (DSC). DSC nonisothermal curves showed an increase in the crystallization temperature along with increasing degree of crystallinity. Dynamic mechanical properties (DMA) indicated significant improvement in the storage modulus and loss modulus compared with neat polyamide 66. The tan ä peak signifying the glass-transition temperature of nanocomposites shifted to higher temperature.

【 授权许可】

Unknown