均苯三甲酸三酯增塑剂的合成及在PVC中的应用

Synthesis of trimesic acid triester and its application in PVC

用均苯三甲酸分别与异辛醇(OA)、异壬醇(INA)、2–丙基庚醇(2-PH)等不同醇进行酯化反应,得到不同均苯三甲酸三酯。以此类均苯三甲酸三酯作增塑剂,与聚氯乙烯(PVC)树脂粉及助剂进行配方测试,结果显示,只有OA类均苯三甲酸三酯与PVC树脂粉的相容性较好,可作为主增塑剂使用。同时,对OA类均苯三甲酸三酯在PVC制品中的耐老化、耐油抽出性(ASTM2~#油)、耐寒性能进行了测试,并与偏苯三甲酸三辛酯(TOTM)、偏苯三甲酸三异壬脂(TINTM)进行了比较。结果显示,OA类均苯三甲酸三酯耐老化性能略差于TOTM、TINTM,但其具有较优的耐寒及耐油性能。

The different trimesic acid triesters were obtained through the esterification reactions of trimesic acid with isooctanol (OA),isononanol (INA),2-propyl heptanol (2-PH) separately.Using such trimesic acid triesters as plasticizers,the formulation tests were carried out by combining with polyvinyl chloride (PVC) resin powder and auxiliaries.The results show that only the trimesic acid triester prepared from OA has good compatibility with PVC resin powder,which can be used as the main plasticizer.Meanwhile,the aging resistance performance,oil extracting resistance performance (ASTM 2~# oil) and cold resistance performance of the trimesic acid triester prepared from OA in the PVC products were tested,and compared with trioctyl trimellitate (TOTM) and triisononyl trimellitate (TINTM).The results show that the aging resistance performance of the trimesic acid triester prepared from OA is slightly lower than TOTM and TINTM,but its cold resistance performance and oil resistance performance are better.