Highly efficientin situtoughening of epoxy thermosets with reactive hyperbranched polyurethane

2014 ◽  
Vol 131 (16) ◽  
pp. n/a-n/a ◽  
Author(s):  
Bing Tang ◽  
Xiaobing Liu ◽  
Xiuli Zhao ◽  
Junhua Zhang
Keyword(s):  
Hyperbranched Polyurethane

Synthesis, Characterization and Application of Multi-Generations Hyperbranched Polyurethane Based on Isophorone Diisocyanate

2012 ◽  
Vol 554-556 ◽  
pp. 126-129 ◽  
Author(s):  
Shun Yin ◽  
Ning Sun ◽  
Chun Yun Feng ◽  
Zhi Mou Wu ◽  
Zhao Hua Xu ◽  
...  
Keyword(s):  
Differential Scanning Calorimetry ◽  
Raw Materials ◽  
Degradation Mechanism ◽  
Resonance Spectroscopy ◽  
Gravimetric Analysis ◽  
Thermal Gravimetric ◽  
Isophorone Diisocyanate ◽  
Scanning Calorimetry ◽  
Degradation Temperature ◽  
Hyperbranched Polyurethane

A series of different generation hyperbranched polyurethane(HBPU) was synthesized based on the raw materials of isophorone diisocyanate(IPDI) and diethanolamine(DEOA). Their structure, thermal degradation mechanism and glass transition temperature(Tg) were characterized by fourier transform infrared spectroscopy(FTIR), nuclear magnetic resonance spectroscopy(NMR), thermal gravimetric analysis(TGA) and differential scanning calorimetry(DSC). The results showed that: the yield of each generation HBPU was up to 90%, different generation HBPU had almost the same initial degradation temperature(about at 200°C) and they all had two decomposition platforms; with the increase of generation, Tg increased from 107.2°C to 132.1°C. The gloss and hardness of the HBPU coatings were significantly improved.

Effect of generation number on properties of fluoroalkyl‐terminated hyperbranched polyurethane latexs and its films

2020 ◽  
Vol 137 (40) ◽  
pp. 49215
Author(s):  
Wei Xu ◽  
Wen Wang ◽  
Lifen Hao ◽  
Weijia Zhao ◽  
Hongna Liu ◽  
...  
Keyword(s):  
Generation Number ◽  
Hyperbranched Polyurethane
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