新型热稳定剂马来海松酸镧的合成及应用研究  

Synthesis and Application of New Type Thermal Stabilizer Lanthanum Maleopimarate

作　　者：刘玉森[1] 黄奇良[1] 雷福厚 

机构地区：[1]广西民族大学化学化工学院广西林产化学与工程重点实验室,广西南宁530008

出　　处：《塑料科技》2014年第10期112-116,共5页Plastics Science and Technology

基　　金：广西自然科学基金资助项目(桂科自0542019);广西林产化学与工程协同创新中心资助项目(2013A05)

摘　　要：以马来海松酸和乙酸镧为原料,采用溶剂法合成了马来海松酸镧(MPALa)。研究了原料物质的量比、温度和时间对产物的影响,并利用傅里叶红外光谱仪、扫描电镜(带能谱仪)和X射线衍射仪对产物进行分析和表征。另外,通过刚果红试纸法和热烘箱老化法研究了MPALa作为热稳定剂对聚氯乙烯(PVC)热稳定性的影响。结果表明:马来海松酸中的—COO-与La3+发生了化学键合,生成了非晶态的MPALa。最佳反应条件为马来海松酸和乙酸镧的物质的量比n马来海松酸:n乙酸镧=1:1.8、反应温度60℃、反应时间6 h,产率可达95%以上。此外,MPALa具有较好的热稳定效果,是一种环保型PVC热稳定剂。The lanthanum maleopimarate（MPALa） has been synthesized by maleopimaric acid and lanthanum acetate with solvent method.The molar ratios of raw material,reaction temperature and reaction time were investigated to optimize the reaction condition.The structure of product was analysed and characterized by Fourier transform infrared spectrometer,scanning electron microscope（with energy disperse spectroscopy） and X-ray diffractometer.In addition,the effect of MPALa as heat stabilizer on thermostability of polyvinyl chloride（PVC） was investigated by Congo red method.The results show that the —COO- in maleopimaric acid and La3＋ has a chemical bond,and amorphous MPALa can be obtained.The optimum reaction conditions are as follows： the molar ratio of maleopimaric acid to lanthanum acetate is 1：1.8,the reaction temperature is 60℃ and reaction time is 6 hours.The yield of MPALa is more than 95%.Moreover,MPALa is a kind of environmentally friendly heat stabilizer for PVC,and has good thermal stability.

关 键 词：聚氯乙烯 马来海松酸镧 热稳定剂 

分 类 号：TQ320.4[化学工程—合成树脂塑料工业]