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通过溶胶-凝胶反应制备侧链含交联硅氧烷的聚氨酯及其表征

Preparation and Characterization of Polyurethanes with Cross-Linked Siloxane in the Side Chain by Sol-Gel Reactions.

作者信息

Zhao Hui, Hao Tong-Hui, Hu Guo-Hua, Shi Dean, Huang Da, Jiang Tao, Zhang Qun-Chao

机构信息

Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory of Green Preparation and Application for Functional Materials, School of Materials Science & Engineering, Hubei University, Wuhan 430062, China.

Laboratory of Reactions and Process Engineering, CNRS-University of Lorraine, 1 rue Grandville, BP 20451, Nancy Cedex 54001, France.

出版信息

Materials (Basel). 2017 Feb 28;10(3):247. doi: 10.3390/ma10030247.

DOI:10.3390/ma10030247
PMID:28772607
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5503350/
Abstract

A series of novel polyurethanes containing cross-linked siloxane in the side chain (SPU) were successfully synthesized through a sol-gel process. The SPU was composed of 0%-20% N-(n-butyl)-3-aminopropyltriethoxysilane (HDI-T) modified hexamethylene diisocynate homopolymer. The effects of HDI-T content on both the structure and properties of SPU were investigated by Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), mechanical properties tests, gel content test, water contact angle measurement and water absorption test. FT-IR, XPS and XRD results confirmed the successful incorporation of HDI-T onto polyurethanes and the formation of Si-O-Si. The surface roughness and the Si content of SPU enhanced with the increase of HDI-T content. Both crystallization and melting temperature shifted to a lower point after the incorporation of HDI-T. The hydrophobicity, tensile strength, Young's modulus and pencil hardness overall increased with the increasing of HDI-T content, whereas the thermal stability and the elongation at break of SPU slightly decreased.

摘要

通过溶胶 - 凝胶法成功合成了一系列侧链含有交联硅氧烷的新型聚氨酯（SPU）。SPU由0%-20%的N-（正丁基）-3-氨丙基三乙氧基硅烷（HDI-T）改性六亚甲基二异氰酸酯均聚物组成。通过傅里叶变换红外光谱（FT-IR）、X射线光电子能谱（XPS）、X射线衍射（XRD）、扫描电子显微镜（SEM）、能谱分析（EDS）、差示扫描量热法（DSC）、热重分析（TGA）、力学性能测试、凝胶含量测试、水接触角测量和吸水率测试，研究了HDI-T含量对SPU结构和性能的影响。FT-IR、XPS和XRD结果证实HDI-T成功引入到聚氨酯中并形成了Si-O-Si。随着HDI-T含量的增加，SPU的表面粗糙度和Si含量增加。引入HDI-T后，结晶温度和熔融温度均向低温移动。随着HDI-T含量的增加，疏水性、拉伸强度、杨氏模量和铅笔硬度总体上增加，而SPU的热稳定性和断裂伸长率略有下降。

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