摘要
引言
目前,市场上基本上采用添加型阻燃剂与水性聚氨酯复配的方式对织物进行阻燃整理,这种方式具有涂层不透明、阻燃剂添加量大、耐水洗性差等缺点。而反应型阻燃水性聚氨酯可以克服这些缺点，在显著提高织物阻燃性的同时并不影响织物手感。
A flame retardant waterborne polyurethane（PU）was prepared by using N,N-bis（2-hydroxymethyl）aminoethyl phosphonic acid dimethyl ester and toluene diisocynate.The performance of the PU was studied with oxygen index（LOI）,thermo-gravimetric analysis（TG）,scanning electron microscopy（SEM）and differential scanning calorimetry（DSC）.The results showed that with 15% flame retardant in the PU,the LOI of the PU reached 30.2%,making the polyurethane from flammable level reduced to flame retardant level.Compared with unmodified waterborne polyurethane,the thermo-decomposition temperature of the PU was reduced,but the maximum decomposition rate dropped by 38.9% and the amount of carbon residue increased by 1075%.The surface of carbon residue was compact and smooth without holes,which would be good for separating oxygen and heat.Phase separation with increasing flame retardant content showed regular changes.With increasing content of flame retardant,tensile strength increased and elongation at break decreased.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2012年第2期653-657,共5页
CIESC Journal
关键词
水性聚氨酯
阻燃
磷-氮协效
waterborne polyurethane
flame retardancy
phosphorus-nitrogen synergy effects
