环保型增塑剂1,6-己二醇油酸酯合成及应用

Synthesis and Application of Environmentally Friendly Plasticizer 1,6-Hexanediol Oleate

为解决现有化学增塑剂成本高、对环境不友好的问题,文章以油酸(OA)和1,6-己二醇(HDO)为原材料,通过酯化反应得到增塑剂1,6-己二醇油酸酯(HD),再对其进行环氧反应生成环氧化1,6-己二醇油酸酯(EHD)。通过探究不同温度下合成的增塑剂对PVC薄膜性能的影响,并对该温度下产物增塑后的PVC薄膜进行测试与表征,最终得到该酯化反应最佳的反应温度。通过测试表明在130℃下合成的增塑剂HD增塑后PVC薄膜断裂伸长率达712.6%,具有良好的机械性能,环氧后的EHD增塑后PVC薄膜断裂伸长率提升至743.6%,说明环氧化可以进一步提高增塑剂增塑后PVC薄膜的力学性能;130℃下合成的HD和环氧后的EHD增塑后PVC薄膜在水中的稳定性好,具有较好的耐迁移性。由此可知,130℃是HD合成的最佳反应温度,且环氧后的环氧1,6-己二醇油酸酯(EHD)增塑效果得到了进一步提高,具有更为优越的耐热性、力学性能和耐迁移性。该研究结论为生物质增塑剂的合成和应用提供了理论支持。

To address the high costs and environmental concerns of current chemical plasticizers,this study used oleic acid(OA)and 1,6-hexanediol(HDO)as raw materials.These were subjected to esterification to produce the plasticizer 1,6-hexanediol oleate(HD),followed by epoxidation to obtain epoxidized 1,6-hexanediol oleate(EHD).The impact of synthesizing these plasticizers at different temperatures on the properties of PVC films was investigated.Testing and characterization of the PVC films plasticized with the products at these temperatures revealed that the optimal reaction temperature for esterification was 130℃.Specifically,PVC films plasticized with HD synthesized at 130℃ showed a tensile elongation at break of 712.6%,indicating excellent mechanical properties.After epoxidation to EHD,the elongation at break increased to 743.6%,demonstrating that epoxidation further enhances the mechanical performance of PVC films plasticized with these compounds.Moreover,both HD and EHD plasticized PVC films synthesized at 130℃ exhibited good stability in water and resistance to migration.Therefore,130℃ was identified as the optimal reaction temperature for HD synthesis.Epoxidized EHD showed superior heat resistance,mechanical properties,and migration resistance.These findings provide theoretical support for the synthesis and application of biomass-based plasticizers.