A renewable and multifunctional eco-friendly coating from novel tung oil-based cationic waterborne polyurethane dispersions

2019 ◽  
Vol 241 ◽  
pp. 118341 ◽  
Author(s):  
Limin Man ◽  
Yechang Feng ◽  
Yang Hu ◽  
Teng Yuan ◽  
Zhuohong Yang
Keyword(s):  
Waterborne Polyurethane ◽  
Tung Oil ◽  
Polyurethane Dispersions ◽  
Cationic Waterborne Polyurethane

Synthesis of MDI-50 and Tung Oil-Based Non-Ionic Waterborne Polyurethanes

2016 ◽  
Vol 848 ◽  
pp. 160-166
Author(s):  
Bai Xia Ren ◽  
Hua Fen Wang ◽  
Zhi Yong Ren ◽  
Wen Tao Liu ◽  
Lei Jiang ◽  
...  
Keyword(s):  
Surface Tension ◽  
Soft Segment ◽  
Waterborne Polyurethane ◽  
Lower Surface ◽  
Molecular Structures ◽  
Proton Nuclear Magnetic Resonance ◽  
Feed Ratio ◽  
Tung Oil ◽  
Waterborne Polyurethanes ◽  
Polyurethane Dispersions

A series of MDI-50 based non-ionic waterborne polyurethane dispersions (MDI-NPUD) were prepared by the mixing of 2,4’-diphenylmethane diisocianate (2,4’-MDI) and 4,4’-MDI (MDI-50) which reacted with hydroxylated tung oil (HTO) and polyethylene glycol-800 (PEG-800), Fourier Transform Infrared Spectroscopy (FTIR) and Proton-Nuclear Magnetic Resonance (1H-NMR) were used to characterize and analyze their molecular structures. The results indicated that MDI-50 and HTO were introduced as hard segment while PEG acted as soft segment. The surface tension, Hydrophile-Lipophile Balance (HLB) and stability were investigated. All MDI-NPUDs had much lower surface tension than the dicyclohexyl methane diisocyanate (HMDI) based NPUD (HMDI-NPUD). By changing the feed ratio of MDI-NPUD, the properties of MDI-NPUD could be controlled

The Structure and Properties of UV-Curable Cationic Waterborne Polyurethane Acrylate

2015 ◽  
Vol 1090 ◽  
pp. 31-37
Author(s):  
Yi Ding Meng ◽  
Hong Wei Li
Keyword(s):  
Soft Segment ◽  
Waterborne Polyurethane ◽  
Decomposition Temperature ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Uv Curable ◽  
High Elongation ◽  
Polyurethane Dispersions ◽  
High Degree ◽  
Cationic Waterborne Polyurethane

A series of stable double-terminated UV reactive cationic waterborne polyurethane dispersions was synthesized, while the structure was confirmed by infrared spectroscopy,laser particle size analysis and free NCO root titration; modified by co-monomerhydroxyethyl acrylate with the UV radiation fast curing, the influence of hydroxyethyl acrylate proportion and the polyurethane’s nNCO/nOH(R value) to the thermal properties, mechanical properties and yellowing of the product was investigated. The investigation illustrated the UV-curable cationic waterborne polyurethaneacrylate film effectively forming a semi-interpenetrating network system to achieve rapid curing coating.The results showedthe product cured by WPU dispersion of R=1.5 mixed with equimolar HEA obtained lowyellowing, the maximum breaking strength, high elongation at break, high thermal decomposition temperature, high crystallization temperature of hard segment, low glass transition temperature of soft segment, high degree of phase separation, better overall performance.

Design of self-dispersible charged-polymer building blocks for waterborne polyurethane dispersions

2018 ◽  
Vol 101 ◽  
pp. 324-331 ◽  
Author(s):  
I. Jiménez-Pardo ◽  
P. Sun ◽  
R.A.T.M. van Benthem ◽  
A.C.C. Esteves
Keyword(s):  
Waterborne Polyurethane ◽  
Building Blocks ◽  
Charged Polymer ◽  
Polyurethane Dispersions

Excellent Mechanical and Transparency Properties of Cationic Waterborne Polyurethane Films Modified by Boehmite Sol

2020 ◽  
Vol 305 (5) ◽  
pp. 2000021
Author(s):  
Peiting Pan ◽  
Xiaosheng Du ◽  
Jinghong Qiu ◽  
Zongliang Du ◽  
Haibo Wang ◽  
...  
Keyword(s):  
Waterborne Polyurethane ◽  
Cationic Waterborne Polyurethane

Role of the interactions between carbonate groups on the phase separation and properties of waterborne polyurethane dispersions prepared with copolymers of polycarbonate diol

2015 ◽  
Vol 88 ◽  
pp. 199-211 ◽  
Author(s):  
José Antonio Jofre-Reche ◽  
Vanesa García-Pacios ◽  
Víctor Costa ◽  
Manuel Colera ◽  
José Miguel Martín-Martínez
Keyword(s):  
Phase Separation ◽  
Waterborne Polyurethane ◽  
Polycarbonate Diol ◽  
Polyurethane Dispersions
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