Effect of Relaxation Heat Setting at Various Temperatures on Molecular Orientation in Polypropylene Fiber

7th Annual International Conference on Materials Science and Engineering

Ai, Wei^1 ; Liu, Xin^1 ; You, Song^1 ; Liu, Fangyi^1 ; Yu, Ze^1 ; Tao, Lei^1 ; Liu, Hongtao^1

School of Material Science and Engineering, Wuhan Textile University, Wuhan, Hubei

430200, China^1

关键词: Heat setting;    Orientation angles;    Orientation degree;    Polypropylene fiber;    Polypropylene fiber(PPF);    Sonic velocity;    Working temperatures;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/562/1/012057/pdf
DOI  :  10.1088/1757-899X/562/1/012057

来源: IOP

【 摘 要 】

Commercially available polypropylene fiber (PPF) samples with relaxation heat setting for 30 minutes in a drying oven at various temperatures (room temperature, 90 °C, 100 °C, 110 °C, 120 °C, 130 °C, 140 °C, 150 °C, respectively.) were prepared for measurement of their sonic velocity, orientation degree, orientation angle and modulus. According to the obtained data for the PPF molecular orientation before and after the relaxation heat setting, it is found that, with the increasing of relaxation heat setting temperature, the sonic velocity in PPF, orientation degree and modulus decreased, while the orientation angle increased. The result may be helpful to choose proper working temperature for PP hernia patch fabrication.