有机硅改性聚丁二酸己二醇酯的增塑性能  

Plasticizing Efficiency of Poly(Hexanediol Succinic) Modified by Organosilicone

作　　者：季淑芳 卢晓彤 高传慧[1] 武玉民[1] JI Shufang;LU Xiaotong;GAO Chuanhui;WU Yumin(College of Chemical Engineering,Qingdao University of Science and Technology,Qingdao 266042,China;College of Chemistry Engineering,Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]青岛科技大学化工学院,山东青岛266042 [2]青岛科技大学化学院,山东青岛266042

出　　处：《青岛科技大学学报（自然科学版）》2019年第4期84-90,共7页Journal of Qingdao University of Science and Technology:Natural Science Edition

基　　金：国家自然科学基金项目(51872150);山东省自然科学基金项目(ZR2018MB034)

摘　　要：采用羟基硅油对聚丁二酸己二醇酯(PHS)进行改性,制备出有机硅改性聚酯增塑剂。利用傅里叶红外光谱(FT-IR)、X-射线光电子能谱(XPS)对PHS改性前后的结构进行分析,采用溶液浇铸法制备PVC(聚氯乙烯)/PHS和PVC/MPHS复合材料,研究PVC/PHS、PVC/MPHS复合材料的力学性能和耐迁移性能。通过傅里叶红外光谱(FT-IR)分析和光电子能谱(XPS)分析发现,在PVC/MPHS共混物中,因为增塑剂MPHS中的极性基团Si—O—Si和CO与PVC中的α—H形成了氢键,所以FT-IR光谱中的CO吸收峰和XPS分析中的Si—O键能向更低的位置偏移。力学测试表明:改性后的增塑性能高于改性前的增塑性能,且增塑效率最高提高了51.72%,添加羟基硅油物质的量为丁二酸物质的量的5%(MPHS-2)时,扯断伸长率达到了233.43%,高于DOP的扯断伸长率192.03%。耐迁移测试表明:MPHS的耐迁移性能优于PHS的耐迁移性能,并且远远高于DOP的耐迁移性能。A series of poly(hexanediol succinic) modified by organesilicone were synthesized by using the raw materials of hydroxy silicone oil, 1,6-hexanediol and succinic acid. The chemical structures of PHS before and after modification were characterized by Fourier transform infrared spectrophotometry(FT-IR) and X-ray photoelectron spectroscopy(XPS). PVC blends were prepared by solution casting, the influence of plasticizers(PHS, MPHS) on mechanical and migration resistance of PVC blends were investigated. It was founds that by FT-IR and XPS analysis, because the hydrogen bonding formed between Si-O-Si, CO of MPHS and the α-hydrogen of PVC, so the CO absorption peak in FT-IR spectrum and Si-O bond in XPS analysis can be shifted to lower positions. The results of mechanical properties testing showed that the plasticizing efficiency of after modification was higher than that of before modification, and the plasticizing efficiency increased by 51.72%. When the molecular weight of hydroxy silicone oil is 5%(MPHS-2) of the molecular weight of succinic acid, the elongation at break reached 233.43%, which was higher than that of DOP 192.03%. The migration test results showed that the migration resistance of MPHS was superior to that of PHS and much higher than that of DOP.

关 键 词：聚丁二酸己二醇酯 改性 聚氯乙烯 增塑性能 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]