环氧油酸新戊二醇酯的制备及应用性能研究

以油酸和新戊二醇为原料，通过酯化反应和环氧化反应制备了新型环保增塑剂环氧油酸新戊二醇酯（ENDO），采用红外光谱仪（FTIR）和核磁共振仪对ENDO的结构进行了表征，并通过转矩流变仪、超低温脆化试验仪、老化试验机和万能试验机测试对比了ENDO、邻苯二甲酸二辛酯（DOP）、已二酸二辛酯（DOA）或偏苯三酸三辛酯（TOTM）增塑的聚氯乙烯（PVC）样品的流变性能、低温脆化性能、耐溶剂抽出性能和耐老化性能。结果表明，本实验成功制备了预期增塑剂产品ENDO；增塑PVC混合物料扭矩由大到小对应的增塑剂为TOTM、ENDO、DOP、DOA，能耗由大到小对应的增塑剂为TOTM、ENDO、DOA、DOP；ENDO增塑PVC样品的低温脆化性能可通过-30 ℃测试；当溶剂为正己烷时，DOP、ENDO、DOA和TOTM增塑PVC样品的断裂伸长率残留率依次为88.24 %、87.99 %、1.69 %和0.71 %，当溶剂为无水乙醇时，为79.00 %、96.22 %、72.76 %和74.52 %；ENDO增塑PVC样品老化后的断裂伸长率残留率、拉伸强度变化率及热老化质量损失均小于TOTM增塑的PVC样品。

Preparation and Application Performance of Epoxidized Neopentylglycol Dioleate

Epoxidized neopentylglycol dioleate （ENDO） was prepared as a novel eco?friendly plasticizer through an esterification reaction and an epoxidation reaction between oleic acid and neopentylglycol， and its chemical structure was characterized through Fourier?transform infrared spectroscopy and nuclear magnetic resonance spectroscopy. The rheological properties， low temperature embrittlement properties， solvent extraction resistance， and aging resistance of the polyvinyl chloride （PVC） compounds plasticized with ENDO， dioctyl phthalate （DOP）， dioctyl adipate （DOA） or trioctyl trimellitate （TOTM） were investigated using a torque rheometer， ultra?low temperature embrittlement tester， aging tester and universal testing machine. The results indicated that ENDO was successfully synthesized with a desired chemical structure. The TOTM?plasticized PVC compound exhibited greater torque and energy consumption than the ENDO， DOP， and DOA?plasticized one. The low?temperature embrittlement property of the plasticized PVC by ENDO could pass?30 ℃ test. In the extraction resistance test of n?hexane，the residual rates of elongation at break of the plasticized PVC by DOP，ENDO，DOA and TOTM were 88.24 %，87.99 %，1.69 % and 0.71 %，respectively. And in the extraction resistance test of anhydrous ethanol，they were 79.00 %，96.22 %，72.76 % and 74.52 %，respectively. The change rate of elongation at break and tensile strength，the mass loss of thermal aging of the plasticized PVC by ENDO were all lower than those of the plasticized PVC by TOTM.