摘要
采用十八烷基三甲基氯化铵(OTAC)和十二烷基二甲基卞基氯化铵(DDBAC)改性蒙脱土,以聚丙烯接枝马来酸酐(PP-g-MAH)作相容剂,通过熔融插层法制备了聚丙烯/蒙脱土纳米复合材料(PP/OMMT)。结果表明,PP-g-MAH能有效地改善PP与OMMT的相容性,当OTAC改性的蒙脱土(OMMT-O)用量为5wt%、PP-g-MAH用量为10wt%时,PP/PP-g-MAH/OMMT-O纳米复合材料的冲击强度为5.4 KJ/m2,比纯PP提高了80%,极限氧指数(LOI)由PP的18提高到23。X射线衍射(XRD)测试表明,PP已经插层进入到蒙脱土片层中,部分蒙脱土产生了剥离。
Montmorillonite （MMT） was modified with octadecyl trimethyl ammonium chloride （OTAC） and dodecyl dimethyl benzyl ammonium chloride （DDBAC） , respectively. Polypropylene/montmorillonite nanocomposites （PP/OMMT） were prepared by melt intercalation using maleic anhydride grafted PP （PP-g-MAH） as compatibilizing additives. It was found that the compatibility between PP and OMMT is improved effectively when PP-g-MAH is added. The izod notch V impact strength of PP/PP-g-MAH/OMMT is 5.4 KJ/m^2, which is increased by 80% higher than that of PP, and its limiting oxygen index （LOI） increases to 23 from 18 for PP when the contents of OMMT-O modified with OTAC is 5wt% and PP-g-MAH is 10wt%. The X-ray diffraction （XRD） results show that PP has been intercalated into the interlayer of OMMT by melt intercalation and the OMMT is exfoliated partially.
出处
《合成材料老化与应用》
2005年第4期10-13,17,共5页
Synthetic Materials Aging and Application
基金
广东省自然科学基金(011544)
广东省"十五"科技攻关重大专项(2003A1070202)资助项目
关键词
聚丙烯
蒙脱土
纳米复合材料
熔融插层
阻燃
polypropylene, montmorillonite, nanocomposites, melt intercalation, flame-retardant
