INFLUENCE OF HOT-CALENDARING PROCESS ON THE STRUCTURE AND PROPERTIES OF PPTA PAPER-BASED MATERIALS
In this work,the employment of hot-calendaring process on the structure and the properties of poly(para-phenylene terephthalamide)(PPTA)paper was investigated.The microstructure of fracture surface,different bonding behaviors between PPTA fibers and PPTA pulp,and the total amount of oxygen-containing groups of the fibers surface before and after hot-calendaring process were researched.Then,we studied the synergistic effects of temperature and pressure on the mechanical properties of PPTA paper-based materials.The results show that the mechanical properties remain the same only in the condition of high temperature.Higher pressure can improve the strength to a limited extent due to an unimproved paper structure.Only in the synergistic effects of temperature and pressure,the tensile strength and the dielectric strength can reach the optimal values,56.6 N·m/g and 27.6 kV/mm,respectively.The hot-calendaring process significantly contributes to increasing the total amount of oxygen-containing groups,raising form 7.17%to 31.87%after hot-calendaring.This research suggested a significant reinforcement and interfacial bonding-improving potential of hot-calendaring process for the production of functional PPTA paper-based composite materials,which is helpful to give rise to avoiding and solving some unexpected phenomena during the hot-calendaring process.
Bin Yang Meiyun Zhang Zhaoqing Lu Runan Wang Qiuyu Zhang
College of Bioresources Chemical and Materials Engineering,Shaanxi University of Science & Technolog College of Bioresources Chemical and Materials Engineering,Shaanxi University of Science & Technolog School of Natural and Applied Sciences,Northwestern Polytechnical University,Xian 710072,China
国际会议
第五届制浆造纸新技术国际研讨会(ISETPP)暨第三届国际造纸与环境学术大会(IPEC)
广州
英文
1-6
2016-11-07（万方平台首次上网日期，不代表论文的发表时间）