摘要
采用复分解法制备了二聚酸镧,并通过红外光谱检测证明了其结构;采用刚果红试纸法研究了二聚酸镧的热稳定作用及变色情况;并与其他热稳定剂二聚酸钙、二聚酸锌、硬脂酸镧、硬脂酸钙、硬脂酸锌进行了比较.结果表明二聚酸镧属于长期型热稳定剂,具有良好的热稳定作用,且无毒环保.二聚酸镧与其他热稳定剂具有广泛的协同作用,二聚酸镧与硬脂酸锌并用可有效改善其抑制PVC初期着色的效能.
Lanthanum dimer acid thermal stabilizer was prepared by double decomposition reaction,and its structures were identified by IR.Its effects on thermal stability of PVC were tested by way of Congo Red Method.The stability of lanthanum dimer acid was compared with calcium dimmer acid,zinc dimmer acid,lanthanum stearate,calcium stearate and zinc stearate.Testing results showed that lanthanum dimer acid was the long-term-type thermal stabilizer and had excellent stability.The extensive synergetic effect existed between lanthanum dimer acid and the other thermal stabilizer.Its efficiencies in inhibiting the initial coloration of PVC can be improved effectively by combining lanthanum dimer acid with zinc stearate.And it is expected to be widely used in PVC processing.
出处
《平顶山学院学报》
2010年第2期86-88,106,共4页
Journal of Pingdingshan University
关键词
二聚酸镧
聚氯乙烯
热稳定剂
热稳定性
lanthanum dimer acid
PVC
thermal stabilizer
thermal stability
