Effect of nano calcium carbonate and attapulgite on isothermal crystallization time of polypropylene under static and dynamic conditions

2018 International Conference on Construction, Aviation and Environmental Engineering

生态环境科学;生物科学

Yuan, Song^1^2 ; Li, Yi^1^2 ; Zhang, Qiong^1^2 ; Wen, Jun^1^2

Jiangsu Xuzhou Construction Machinery Research Institute, 221004, China^1

State Key Laboratory of Intelligent Manufacturing of Advanced Construction Machinery, Xuzhou Construction Machinery Group, 221004, China^2

关键词: Crystallization process;    Crystallization time;    Differential scanning calorimeters;    Isothermal crystallization;    Nano calcium carbonate;    Rheological experiment;    Static and dynamic conditions;    Static conditions;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/233/3/032017/pdf
DOI  :  10.1088/1755-1315/233/3/032017

来源: IOP

【 摘 要 】

The isothermal crystallization time of polypropylene/nano calcium (PP/CaCO3) and polypropylene/attapulgite (PP/ATP) under static and dynamic conditions were investigated by using differential scanning calorimeter and Rheological experiments. Relatively, in static conditions, the calcium carbonate was easier to accelerate the crystallization process due to its shape. In the shear field the attapulgite is more advantageous to shorten crystallization time indicating that the attapulgite dispersed in the PP matrices confined the PP chains and hindered the movement of the PP chains.