基于含磷阻燃剂的聚酰胺6纤维的制备与表征

Preparation and characterization of polyamide 6 fibre based on a phosphorus-containing flame retardant.

作者信息

Liu Ke, Li Yuanyuan, Tao Lei, Xiao Ru

机构信息

State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University Shanghai 201620 P. R. China

出版信息

RSC Adv. 2018 Mar 5;8(17):9261-9271. doi: 10.1039/c7ra13228j. eCollection 2018 Feb 28.

DOI:10.1039/c7ra13228j

PMID:35541864

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9078688/

Abstract

Intrinsically flame retardant polyamide 6 (FRPA6) was synthesized by melt polycondensation of caprolactam and 9,10-dihydro-10-[2,3-di(hydroxycarbonyl)propyl]-10-phosphaphenanthrene-10-oxide (DDP). Following this, FRPA6 fibres were prepared by melt spinning. The chemical structure, thermal stability, mechanical and combustion properties of FRPA6 were characterized by Fourier transform infrared spectroscopy, nuclear magnetic resonance spectroscopy, differential scanning calorimetry, thermogravimetric analysis, tensile measurements, vertical burning measurements, limiting oxygen index (LOI) measurements, cone calorimetry and scanning electron microscopy. The thermal stability of FRPA6 decreased to a certain extent, but the amount of residual char was improved. FRPA6 containing 5 wt% DDP could achieve a V-0 rating with an LOI value of 33.7%. The spinnability of FRPA6 fibres was good and the tenacity at break reached 3.0 cN dtex which met the requirements of textiles. The flame retardancy of FRPA6 fibres was definitely improved and the LOI value of FRPA6-5 fabric could reach 28.4%, thereby showing good prospect in applications.

摘要

通过己内酰胺与9,10-二氢-10-[2,3-二(羟羰基)丙基]-10-氧化磷杂菲-10-氧化物（DDP）的熔融缩聚反应合成了本质阻燃聚酰胺6（FRPA6）。随后，通过熔融纺丝制备了FRPA6纤维。采用傅里叶变换红外光谱、核磁共振光谱、差示扫描量热法、热重分析、拉伸测量、垂直燃烧测量、极限氧指数（LOI）测量、锥形量热法和扫描电子显微镜对FRPA6的化学结构、热稳定性、力学性能和燃烧性能进行了表征。FRPA6的热稳定性有一定程度降低，但残炭量有所提高。含5 wt% DDP的FRPA6可达到V-0等级，极限氧指数值为33.7%。FRPA6纤维的可纺性良好，断裂强度达到3.0 cN/dtex，满足纺织要求。FRPA6纤维的阻燃性得到明显改善，FRPA6-5织物的极限氧指数值可达28.4%，在应用中显示出良好的前景。