三聚氰胺聚磷酸盐/季戊四醇配比、协效剂组及表面改性对聚丙烯基木塑复合材料的膨胀阻燃影响  

Effect of the Melamine Polyphosphate/Pentaerythritol Ratio,Synergist Group and Surface Modification on Intumescent Flame Retardants of Polypropylene-Based Wood-Plastic Composites

作　　者：朱德钦[1] 生瑜[1] 郑守扬 童庆松[1] ZHU Deqin;SHENG Yu;ZHENG Shouyang;TONG Qingsong(Fujian Key Laboratory of Polymer Materials,College of Chemistry and Materials Science of Fujian Normal University,Fuzhou 350007,China)

机构地区：[1]福建省高分子材料重点实验室福建师范大学化学与材料学院

出　　处：《应用化学》2019年第6期649-657,共9页Chinese Journal of Applied Chemistry

基　　金：福建省科技厅高校产学合作项目(2018Y4001);福建省科技厅高校产学合作科技重大项目(2015Y4003)资助~~

摘　　要：通过极限氧指数(LOI)、线性燃烧速率(LBR)、热重分析和锥形量热分析等技术手段研究膨胀型阻燃剂(IFRs)中三聚氰胺聚磷酸盐(MPP)和季戊四醇(PER)的质量比、组成为m(MgO)∶m(可膨胀石墨,EG)∶m(SiO2)=1∶5∶5的协效剂组(MgO/EG/SiO2)和硅烷偶联剂(KH550)对聚丙烯基木塑复合材料(WPC)阻燃性能的影响。结果表明,当IFRs中m(MPP)∶m(PER)=23∶2(IFRs-M1)、质量分数为25%时的阻燃性能最佳,膨胀阻燃复合材料WPC/IFRs-M1的LOI和LBR分别为27.1%和3.89mm/min,较未添加的WPC分别提高48.1%和下降89.79%,燃烧时的热释放速率、总热释放量、总烟释放量和CO2释放量分别降低了76.2%、50.1%、6.9%和65.4%,600℃时的残炭率提高了498.3%。协效剂组和KH550表面处理均可进一步改善WPC/IFRs-M1的阻燃性能,均对IFRs-M1具有良好的阻燃增效作用。相比于WPC/IFRs-M1,同时用这两种阻燃增效手段的WPC/IFRs-M1/MgO/EG/SiO2/KH550,其LOI提高了3.7%,LBR降低了20.3%;材料的热稳定性明显提高,热失重降低;燃烧时的热释放速率、总热释放量、总烟释放量和CO2释放量分别降低了36.5%、37.6%、57.5%和33.33%,600℃时的残炭率提高了84.02%,显示出二者更好的协同效应。The effect of the mass ratio and composition of melamine polyphosphate(MPP)/pentaerythritol(PER)in intumescent flame retardants(IFRs),synergist group MgO/EG/SiO 2 of which composition with m(MgO)∶m(expandable graphite,EG)∶m(SiO 2)=1∶5∶5,and the silane coupling agent KH550 on the flame retardancy of polypropylene-based wood-plastic composites(WPC)were studied by means of limiting oxygen index(LOI),linear burning rate(LBR),thermogravimetric analysis and cone calorimetry.The results show that when m(MPP)∶m(PER)=23∶2 in IFRs(code IFRs-M1)and its mass fraction is 25%,the flame retardant performance is the best,and LOI and LBR of the intumescent flame retardant composite WPC/IFRs-M1 are 27.1%and 3.89 mm/min,respectively,which are 48.1%higher and 89.79%lower than those of the unadded WPC.Compared with the unadded WPC,the heat release rate and total heat release during combustion decrease by 76.2%and 50.1%,the carbon residue rate at 600℃increases by 498.3%,the total smoke emission reduces by 6.9%,and the release of CO 2 drops by 65.4%.It also indicates that both the synergist group and KH550 surface treatment can further improve the flame retardant properties of WPC/IFRs-M1,and both have good flame retardant synergistic effect on IFRs-M1.Compared with WPC/IFRs-M1,LOI of WPC/IFRs-M1/MgO/EG/SiO 2/KH550 with both flame retardant means mentioned above is enhanced by 3.7%,and its LBR declines by 20.3%.At the same time,its thermal stability significantly improves,the thermal weight loss goes down,and its heat release rate and total heat release during combustion reduce by 36.5%and 37.6%,respectively.Its carbon residue rate at 600℃increases by 84.02%,the total smoke release reduces by 57.5%,and the amount of CO 2 release reduces by 33.33%,indicating a better synergistic effect.

关 键 词：三聚氰胺聚磷酸盐 季戊四醇 协效剂组 木塑复合材料 阻燃 

分 类 号：O663[理学—分析化学]