聚酰胺环氧氯丙烷增强聚丙烯腈纤维纸的研究

Strengthening of Polyacrylonitrile Sheets Using Polyamide Epichlorohydrin Resin

关键词:  腈纶纸  PAE树脂  自交联  增强机理

Key Words:polyacrylonitrile fiber sheets  polyamide epichlorohydrin resin  self-crosslinking  strengthening mechanism

摘要:将聚酰胺环氧氯丙烷（PAE）树脂用于聚丙烯腈（PAN）纤维湿法纸张成形过程，以提高纸张强度性能。PAE树脂通过在PAN纤维上附着沉积形成自交联网络，增强纤维间结合。当PAE树脂的用量为0.6%（相对纤维绝干量）时，纸张抗张指数提高21.0%，撕裂指数提高25.8%，伸长率提高34.4%，紧度提高8.2%。通过衰减全反射-傅里叶红外光谱仪（ATR-FTIR）、X射线光电子能谱仪（XPS）及扫描电子显微镜（SEM）分析，证实了PAE树脂分子间通过自交联网络结构，形成叔胺基团，使纤维间结合更为紧密，因而提高纸张的紧度和强度。本研究提出了一种制备具有优异强度性能的PAN纤维纸的方法。

Abstract:Taking advantage of the strengthening mechanism of polyamide epichlorohydrin （PAE）， PAE resin reinforced polyacrylonitrile （PAN） fiber sheets were successfully prepared， PAE resin was deposited on PAN fibers to form a “self-crosslinking” networks to enhance the binding of PAN fibers. By adding low amount （0.6 %） of PAE as cross-linkers， the tensile index， tear index， and elongation of the sheet were increased by 21.0%， 25.8%， 34.4%， respectively. Analyses of attenuated totalinternal reflectance fourier transform infrared （ATR-FTIR）， X-ray photoelectron spectroscopy （XPS） and scanning electron microscope （SEM） confirmed the formation of tertiary amine group in PAE-PAN sheets by the self-crosslinking of PAE polymer. This work suggested a promising PAN fiber sheet enhancement strategy by adding PAE resin as self-crosslinking material．