二-(4-羟基丁基)聚二甲基硅氧烷改性聚氨酯/脲的合成及性能研究  被引量:4

Synthesis and Characterization of diydroxybutyldimethylsilyl capped polydimethylsiloxane Modified Polyurethane/urea

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作  者:库斌[1] 鲁琴[1] 高风[1] 朱杰[1] 黄世强[1] 

机构地区:[1]湖北大学功能材料绿色制备与应用教育部重点实验室,武汉430062

出  处:《有机硅材料》2012年第2期75-78,共4页Silicone Material

摘  要:以二-(4-羟基丁基)聚二甲基硅氧烷(HB-PDMS)和聚乙二醇为(PEG)软段,2,4-甲苯二异氰酸酯(TDI)为硬段,合成了一系列不同硬段含量的聚氨酯/脲(PU)和有机硅改性聚氨酯/脲(SiPU)。通过FT-IR、DSC、TG及吸水率表征了PU和SiPU的结构及性能。结果表明,相对于PU,SiPU的耐水性随SiPU中HB-PDMS含量的增大而逐渐增强,聚硅氧烷的引入虽然降低了PU的初始热降解温度,但其在高温区的热稳定性增强。Based on dihydroxybutyldimethylsilyl capped polydimethylsiloxane (HB -PDMS) and polyethylene glycol (PEG) as the soft segment and 2,4 -toluenediisocyanate (TDI) as the hard segment, a series of polyurethane/urea (PU) and silicone - modified polyurethane/urea (SiPU) with various hard segment content were prepared. The structures and properties of these polymers were characterized by Fourier Transfer infrared spectroscopy ( FT - IR) , differential scanning calorimetry (DSC) , thermal gravimetric analysis (TG) and water absorption. The result showed that the water resistance of SiPU as well as the thermal stability was gradually increased with increasing the HB -PDMS content.

关 键 词:二-(4-羟基丁基)聚二甲基硅氧烷 聚氨酯/脲 改性 双组分 

分 类 号:O634.4[理学—高分子化学]

 

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