Synthesis and Properties of Waterborne Polyurethane-acrylate Hybrid Emulsion Modified by Organic Silicane

被引：2
|
作者：
Lai, Xiaojuan [1 ]
Shen, Yiding [1 ]
Wang, Lei [1 ]
机构：
[1] Shaanxi Univ Sci & Technol, Key Lab Auxiliary Chem & Technol Chem Ind, Minist Educ, Xian 710021, Shaanxi, Peoples R China
来源：
APPLICATIONS OF ENGINEERING MATERIALS, PTS 1-4 | 2011年 / 287-290卷
关键词：
waterborne polyurethane; acrylates; 3-aminopropyltriethoxylsilane; hybrid emulsion; POLYDIMETHYLSILOXANE; DISPERSIONS;
D O I：
10.4028/www.scientific.net/AMR.287-290.1532
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Waterborne polyurethane emulsions were synthesized with isophorone diisocyanate(IPDI), dihydromethyl propionic acid(DMPA) and poly-c-caprolactone glycol(PCL), and then reacted with hydroxy-ethyl acrylate(HEA) and 3-aminopropyltriethoxylsilane(APTES) to cap the terminal -NCO groups. The polyurethane emulsions were used to copolymerize with acrylates to synthesize the modified waterborne polyurethane-acrylate hybrid emulsions. The structure, thermal stability and crystallinity of modified polyurethane were studied by FTIR, TG, XRD and the mechanical properties of modified polyurethane films was also investigated. The results show that crystallization of the modified waterborne polyurethane decreases and thermal stability is improved. When the mass fraction of acrylate is 20% and APTES content is 15%, tensile strength of the modified polyurethane films can reach 23.9MPa and elongation at break is 247%.
引用
收藏
页码：1532 / 1537
页数：6
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