摘要
采用间苯二酚双(二苯基)磷酸酯(RDP)、双酚A双(二苯基)磷酸酯(BDP)、磷酸三甲苯酯(TCP)和异丙苯基磷酸酯(IPP)作为阻燃协效剂与膨胀型阻燃剂(IFR)复配阻燃聚丙烯(PP)。研究了芳基磷酸酯的种类对PP/IFR复合材料阻燃性能、热稳定性能和力学性能的影响,并通过热重分析(TGA)、扫描电镜(SEM)等对材料进行了表征。结果表明:芳基磷酸酯对PP/IFR复合材料具有一定的协同阻燃作用。当芳基磷酸酯用量为5.0%时,PP/IFR/TCP、PP/IFR/IPP、PP/IFR/RDP和PP/IFR/BDP复合材料的氧指数(OI)由PP/IFR的28.5%分别提高到29.5%、30.0%、30.5%和29.5%,垂直燃烧级别由UL 94V-1级提升至UL 94V-0级;同时,RDP和BDP可提高PP/IFR复合材料的热稳定性能,500℃时的残余率分别高达15.4%和12.9%。此外,RDP和BDP的加入有利于IFR粒子的分散,从而改善了材料的力学性能。
Different kinds of aryl phosphate, such as resorcinol bis（diphenyl phosphate）（RDP）, bisphenol A bis（diphenyl phosphate）（BDP）, tri-methyl-phenyl phosphate （TCP） and tri-isopmpylated phenyl phosphate（IPP）, were compounded with intumescent flame retardant （IFR） to prepare the flame-retardant polypropylene （PP）. The synergistic effects of the aryl phosphates on the flame retardancy, thermostability and mechanical properties of PPIIFR composite were investigated by thermogravimetric analysis （TGA） and scanning electron microscope （SEM）. The results show that： the aryl phosphates has good synergistic effect with IFR on flame retardant PP. When the content of the aryl phosphate is 5%, the oxygen index （OI） values of PP/IFR/TCP, PP/IFR/IPP, PPIIFR/RDP and PP/IFR/BDP composites increase from 28.5% of PP/IFR to 29.5%, 30.0%, 30.5%, and 29.5% respectively, and the UL-94 rating improves from V-1 to V-0. Meanwhile, the thermostability of PP/IFR composite enhances with the addition of RDP and BDP, the char residues of composites at 500℃ is up to 15.4% and 12.9%, respectively. Futhermore, with the addition of RDP and BDP, the dispersion of IFR in PP improves and then the mechanical properties of the composites increase.
出处
《塑料科技》
CAS
北大核心
2012年第6期42-46,共5页
Plastics Science and Technology
关键词
聚丙烯
芳基磷酸酯
膨胀型阻燃剂
协同效应
热稳定性
Polypropylene
Aryl phosphate
Intumescent flame retardant
Synergisitic effect
Thermostability
