论文部分内容阅读
以氰尿酸、硝酸镧、氢氧化钠为原料合成了氰尿酸镧,通过刚果红试纸法研究了氰尿酸镧与硬脂酸钙、硬脂酸锌、季戊四醇、β-二酮对PVC热稳定性的协同作用;以协同作用为依据,合成了3组复合稳定剂,并且研究了这3组稳定剂的热稳定性、变色性。结果表明:氰尿酸镧与硬脂酸钙、硬脂酸锌、季戊四醇之间有明显的协同作用,但与β-二酮协同作用不明显;复合稳定剂a在热稳定性试验中比另外两组效果好,而复合稳定剂c在变色性方面比另外两组效果都好。
Cyanuric acid, lanthanum nitrate and sodium hydroxide were used as raw materials to synthesize lanthanum cyanurate. Congo red paper was used to study the thermal stability of PVC with lanthanum cyanurate, calcium stearate, zinc stearate, pentaerythritol and β-diketone Synergy; based on the synergy, synthesized three groups of composite stabilizers, and studied the thermal stability of the three groups of stabilizers, discoloration. The results showed that: lanthanum cyanurate and calcium stearate, zinc stearate, pentaerythritol have a significant synergy between, but with the synergistic effect of β-diketone is not obvious; composite stabilizer a in the thermal stability test than the other two Group effect is good, and the composite stabilizer c in the discoloration better than the other two groups are good.