摘要
采用微波晶化低饱和态共沉淀法快速制备了层板上含有稀土铈元素的水滑石(LDHs),并将其应用于聚丙烯(PP)中通过熔融插层法制备了LDHs/PP复合材料。利用红外光谱、X射线衍射和透射电镜对LDHs进行了表征,并研究了LDHs/PP复合材料的阻燃性能和热降解性能。结果表明:当n(Zn2+)/n(Al3+)=3,n(Ce3+)/n(Al3+)=1/2时,所形成的Zn-Al-Ce-LDHs形貌最好,晶体结构最为规整;复合材料的阻燃性能随着Zn-Al-Ce-LDHs用量的增加而提高;当用量同为50%时,Zn-Al-Ce-LDHs/PP复合材料的氧指数达到28%,790℃下的残炭量为33.6%远,高于Mg-Al-LDHs/PP复合材料。
Hydrotalcite（LDHs） contained Ce element was prepared by microwave crystallization and low saturated state coprecipitation.The synthesized sample was applied to polypropylene（PP） to prepare LDHs/PP composite by melt intercalation.LDHs was characterized by FTIR,XRD and TEM.The flame retardancy and thermal stability of LDHs/PP composite were also investigated.The results show that when n（Zn2＋）/n（Al3＋）=3,n（Ce3＋）/n（Al3＋）=1/2,the morphology of Zn-Al-CeLDHs is the best,the crystal structure is most complete;with the increase of Zn-Al-Ce-LDHs content,the flame retardancy of the composite is improved;when LDHs content is 50%,the OI of Zn-Al-Ce-LDHs/PP composite is up to 28%,and the char residue at 790 ℃ is 33.6%,which is much higher than that of Mg-Al-LDHs/PP composite.
出处
《塑料科技》
CAS
北大核心
2011年第1期74-77,共4页
Plastics Science and Technology
基金
中央高校基本科研业务费专项资金项目(No.DL09BB34)
关键词
水滑石
聚丙烯
稀土元素
阻燃性能
微波晶化
Hydrotalcite
Polypropylene
Lanthanon
Flame retardancy
Microwave crystallization
