摘要
采用聚丙烯接枝马来酸酐(PP-g-MAH)作为相容剂,通过熔融插层法制备了具有阻燃性能的聚丙烯/有机蒙脱土(PP/OMMT)纳米复合材料。考察了相容剂、蒙脱土的用量等对纳米复合材料的阻燃性能的影响,并用X射线衍射(XRD)、透射电镜(TEM)和热重分析(TG)等对材料进行了表征。TEM照片和XRD结果,表明PP-g-MAH能够很好地改善OMMT与PP的相容性,OMMT能在基体中达到剥离。当OMMT和PP-g-MAH质量分数分别为5%和10%时,热释放速率峰值(PHRR)和平均热释放速率(MHRR)分别为491 kW/m2和286 kW/m2,比纯PP降低了42%和30%,TG分析表明PP/PP-g-MAH/OMMT纳米复合材料具有了更高的热稳定性。
Polypropylene/organophilic montmorillonite （PP/OMMT） nanocomposite by melt intercalation using maleic anhydride grafted PP （PP-g-MAH） as compatilizer. The effects of PP- g-MAH and OMMT content on flame retardancy of PP were studied. The materials were characterized by X-ray diffraction （XRD）, TEM and thermogravimetry （TG）. The XRD results and TEM photographs show （-）MMT can be exfoliated in matrix, suggesting the compatibility of OMMT and PP can be remarkably improved by PP-g-MAH. When the content OMMT and PP- g-MAH content is 5%and 10% respectively, flame retardant PP with peak heat release rate （PI-tRR） of 491 kW/m^2and mean heat release rate （M[IRR） of 286 kW/m^2was obtained, which is 42%and 30% lower than that of PP respectively. The TG result shows PP/PP-g-MAH/ OMMT nanocomposite has belter thermal stability than PP.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2007年第5期152-155,159,共5页
Polymer Materials Science & Engineering
基金
广东省"十五"科技攻关重大科技专项资助项目(2003A1070202)
关键词
聚丙烯
蒙脱土
纳米复合材料
阻燃
polypropylene
montmorillonite
nanocomposite
flame retardant
