摘要
采用熔融共混法制备了聚酰胺66/铷铁硼(PA66/Nd Fe B)复合材料,并对其熔体流变行为进行了系统研究。结果表明:PA66/Nd Fe B复合材料的表观黏度(ηa)随着剪切速率的增加而降低,为假塑性流体;ηa随着温度的升高而降低,随着Nd Fe B用量的增加而提高;非牛顿指数(n)随着温度的升高而增大,随着Nd Fe B用量的增加而降低;熔体的黏流活化能(ΔEη)随着剪切速率的提高而增大,并逐渐趋于平缓;另外,ΔEη随着Nd Fe B用量的增加而减小,即复合材料的温敏性随着Nd Fe B用量的增加而下降。
The Polyamide 66（PA66）/Nd Fe B composite was prepared by melting blending, and the melting rheological properties were systematically investigated. The results show that： the apparent viscosity（ηa） decreases with the increasing of shear rate, it belongs to pseudo plastic fluid; ηa decreases with the increase of temperature and increases with the increase of Nd Fe B addition. The non-Newtonian index（n） of PA66/Nd Fe B composites goes up with the increase of temperature, and the n value decreases as the increase of Nd Fe B content. The viscous flow activation energy（ΔEη） of PA66/Nd Fe B composites decreases with the increase of shear rate; with the increase of Nd Fe B content, the value of ΔEη decreases and the thermosensitivity gradually transforms to shear sensitivity.
出处
《塑料科技》
CAS
北大核心
2015年第8期23-27,共5页
Plastics Science and Technology
基金
河南工程学院功能纺织高分子材料科技创新团队(CXTD2013004)
河南工程学院博士基金项目(D2012029)
河南省教育厅科技攻关项目(14B150004)
郑州市重点科技攻关项目(郑州市科技局121PPTGG357-1)
关键词
聚酰胺66
铷铁硼磁粉
流变性能
非牛顿指数
黏流活化能
Polyamide 66
Nd Fe B magnets
Rheological property
Non-Newtonian index
Viscous flow activation energy
