摘要
以TiO2为阻燃协效剂,采用多聚磷酸蜜胺(MPP)和笼状季戊四醇磷酸酯(PEPA)复配阻燃剂,制备了具有良好阻燃性能的无卤阻燃聚丙烯(PP)。研究了TiO2用量对PP阻燃性能和协效作用的影响。结果表明:添加少量的TiO2即可显著提高PP的阻燃性能;当MPP/PEPA/TiO2添加量分别为12%、8%和1%时,阻燃PP的氧指数高达31.5。TGA和FTIR分析及SEM和体式显微镜观测结果表明:添加TiO2可以催化MPP/PEPA间的酯化反应,促进体系成炭,形成更致密的炭层,从而提高材料的阻燃性能。
Intumescent flame retardant （IFR） polypropylene（PP） was prepared by using Melamine polyphosphate （MPP） and 1-oxo-4-hydroxymethy 1-2,6,7-trioxa-l-phospha- bicyclo[2. 2. 21 octane （PEPA） as flame retardants and TiO2 as synergistic agent. Effects of TiO2 contents on flame retardancy of PP and synergistic effect between IFR and TiO2 were studied. It was found that a little quantity of TiO2 could improve the flame retardance of PP remarkably; when the mass fraction of MPP, PEPA and TiO2 were 12%, 8% and 1% respectively, the LOI of flame retardant PP was 31.5. TGA and FTIR results and SEM and optical micrographs show that TiO2 can catalyze esterification reaction between MPP and PEPA, and increase the char residue and form much denser char to improve the flame retardant performance of materials.
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2009年第2期255-257,261,共4页
Journal of Materials Science and Engineering
基金
2007年度顺德区产学研合作资助项目(2007CXY038)
