Effects of the reagent ratio on the properties of waterborne polyurethanes-acrylate for application in damping coating

被引：46
|
作者：
Deng, Y. J. [1 ,2 ]
Zhou, C. [1 ,2 ]
Zhang, M. Y. [1 ,2 ]
Zhang, H. X. [1 ,2 ,3 ]
机构：
[1] Changchun Univ Technol, Minist Educ, Engn Res Ctr Synthet Resin & Special Fiber, Changchun 130012, Jilin, Peoples R China
[2] Changchun Univ Technol, Sch Chem Engn, Changchun 130012, Jilin, Peoples R China
[3] Chinese Acad Sci, Grad Sch, Changchun Inst Appl Chem, Changchun 130022, Jilin, Peoples R China
来源：
PROGRESS IN ORGANIC COATINGS | 2018年 / 122卷
关键词：
Waterborne polyurethane; Hybrid emulsion; Damping properties; INTERPENETRATING POLYMER NETWORKS; HYBRID EMULSIONS; COMPOSITE LATEX; SOFT SEGMENTS; CROSS-LINKING; DISPERSIONS; NANOCOMPOSITES; MORPHOLOGY; MEMBRANES; ADHESIVE;
D O I：
10.1016/j.porgcoat.2018.05.025
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Hybrid emulsions of waterborne polyurethanes-acrylate (WPUA) were synthesized using isophoronediisocyanate (IPDI), polytetramethylene glycol (PTMG), and an acrylate monomer as the main materials. The influence of the NCO/OH ratio (R value) and PU/PA ratio on different properties of the WPUA hybrid emulsions and films was investigated using dynamic light scattering (DLS), transmission electron microscopy (TEM), Fourier-transform infrared spectroscopy (FTIR), contact angle measurements, mechanical tests and dynamic mechanical analysis (DMA). DLS and TEM results showed that all WPUA latex particles display regular spheres and excellent stability. DMA indicated that when the PU/PA ratio was 30/70 and the R value was 1.2, the loss factor (tan delta) was >= 0.3 spanning a temperature range of 75 degrees C with a maximum value of 1.2. The WPUA films could be used as materials for damping applications.
引用
收藏
页码：239 / 247
页数：9
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