摘要
以蓖麻油酸与丁二酸酐、马来酸酐等酸酐合成了五种蓖麻油基二元酸。通过电导率法、热老化烘箱法和刚果红法等方法研究了蓖麻油基二元酸对聚氯乙烯(PVC)热稳定性能的影响。研究结果表明,蓖麻油基二元酸单独使用时可改善PVC初期着色,且热稳定效果随其取代基的不同而不同。以β-二酮为对比,考察了蓖麻油基二元酸对异辛酸钙/马来酸蓖麻醇酯锌(IA-Ca/RAM-Zn)和硬脂酸钙/硬脂酸锌(CaSt2/ZnSt2)体系的热稳定效果的影响,发现其与钙锌盐之间具有协同效应。且当添加0.3份的马来酸蓖麻醇酯和β-二酮于CaSt2/ZnSt2体系时,静态热稳定时间分别为26.9 min和26.3 min。
Five kinds of novel ricinoleic diacids were synthesis from ricinoleic acid with different an- hydrides. The influence of rieinoleic diaeid on the processing thermal stability of poly （ vinyl chloride） was in- vestigated by measuring dehydrochlorination rate of PVC , static heat stability test and Congo red test . The re- sults showed that ricinoleic diacid can improve the initial color stability of PVC and thermal stability varies with the substituent group. Moreover, in comparison withβ- diketone, synergistic effect was found between ricin- oleie diacid and metallic soaps. Ricinoleic diacid improved the stabilization effect of calcium isooctanate / zinc soap of ricinoleic acid maleate and the traditional metallic stearates stabilizer（ CaSt2/ZnSt2 ）. The static thermal stability time is 26. 9 rain, 26.3 rain, respectively, when added O. 3 phr ricinoleic acid maleate andβ- dike- tone to CaSt2/ZnSt2 system.
出处
《塑料助剂》
2013年第5期32-36,共5页
Plastics Additives
基金
国家科技部十二.五科技支撑项目(2012BAD32B03)
关键词
聚氯乙烯
蓖麻油酸
钙
锌热稳定剂
热稳定性能
poly（vinyl chloride）
ricinoleic acid
calcium/zinc thermal stabilizer
thermal stability
