UV-curing behavior and physical properties of waterborne UV-curable polycarbonate-based polyurethane dispersion

Hwang, Hyeon-Deuk; Park, Cho-Hee; Moon, Je-Ik; Kim, Hyun‐Joong; Masubuchi, Tetsuo

doi:10.1016/j.porgcoat.2011.07.009

Cited by 84 publications

(25 citation statements)

References 18 publications

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“…This is related to an increasing functionality of the polyol with increasing OH number, and increasing hard segment content to provide more crosslinking sites for the formation of hydrogen bonding in the hard segment chain. Increasing crosslinking density in the polyurethane reduces the mobility of chain segments, hence provides better resistance to externally applied extension forces which leads to higher tensile strength and lower elongation at break (Hwang et al, 2011). The increase in hard segment content also suppresses the soft segmenthard segment phase separation, and results in decreased elongation (Lee and Kim, 1995).…”

Section: Pendulum Hardness Of Jpu Filmsmentioning

confidence: 99%

Waterborne polyurethane dispersions synthesized from jatropha oil

Saalah

Abdullah

Aung

et al. 2015

Industrial Crops and Products

127

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Section: Pendulum Hardness Of Jpu Filmsmentioning

confidence: 99%

Waterborne polyurethane dispersions synthesized from jatropha oil

Saalah

Abdullah

Aung

et al. 2015

Industrial Crops and Products

127

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“…It is well known that the properties of coatings are affected by many factors, such as the environment, degree of wetting between the coating and the substrate, chemical or physical effects, surface properties of the substrate, and so on [17,18,19,20,21,22]. Yang et al [23] found that different environments could cause differences in the chemical composition on the surface of the PUA painting film and the surface morphology was thus different.…”

Section: Introductionmentioning

confidence: 99%

Preparation of a Fast Water-Based UV Cured Polyurethane-Acrylate Wood Coating and the Effect of Coating Amount on the Surface Properties of Oak (Quercus alba L.)

Wang

Liu

et al. 2019

Polymers

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A fast water-based ultraviolet light (UV) curing polyurethane-acrylate (PUA) wood coating was prepared in the laboratory, and applied on oak (Quercus alba L.) at different coating amounts. The PUA wood coating can be fast cured within 22 min, which highly improved the drying speed compared to normal water-based wood coatings (often higher than 35 min). The coating amounts affected the coating properties after curing on oak. With the increase of coating amount, the adhesion, hardness and gloss value of surface increased to different extents. Meanwhile, the surface of sample became smooth gradually because the voids of the oak were filled. Thus, higher coating amount resulted in better coating properties. However, no significant increase of penetration depth was found. During curing, the hydroxyl groups of the wood reacted with the coating. The optimal parameter in this study was the coating amount of 120 g/m2, where the adhesion reached 1 (with 0–5% cross-cut area of flaking along the edges), with the hardness of 2H and the gloss of 92.56°, which met the requirement of Chinese standard GB/T 18103–2013, and could be used for engineered wood flooring.

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“…Numerous articles have described the chemistry and processes used to manufacture PU [5][6][7]. The effects of various factors such as the structure and content of diisocyanates, polyols, hydrophilic groups and chain extenders on the preparation and properties of PU dispersions have been studied extensively [8][9][10][11][12]. Additionally, thermal phase separation and the physical properties of PU prepared from different polyols have also been investigated [13,14].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of UV-curable polycarbonate diols (PCDL)-based polyurethane acrylate for negative photoresist

Liu

Zheng

et al. 2015

Polym. Bull.

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Two kinds of UV-curable polyurethane acrylates (PCDL-H-PUA and PCDL-P-PUA) were synthesized starting with polycarbonate diols (PCDL), isophorone diisocyanate and dimethylolpropionic acid and terminated with hydroxyethyl methacrylate or pentaerythritol triacrylate to impart mono-methacrylate or tri-acrylate end-group functionality, respectively. The structures and properties of the products were characterized by Fourier transform infrared spectroscopy, proton nuclear magnetic resonance spectroscopy, gel permeation chromatography and thermogravimetric analysis. The average molecular weights were between 7500 and 9300 g/mol, and the thermal properties of the products were excellent. The influence of the functionality of the end-capping functional group on the UV-curing behavior was investigated using real-time spectroscopy. Results showed that curing rate and conversion of PCDL-P-PUA were higher than those of PCDL-H-PUA, and the final double bond conversion of the polymers reached 95 %. PCDL-H-PUA and PCDL-P-PUA were applied to negative photoresists as the main film resin. The resolution of the optimal photoresist reached 40 lm.

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UV-curing behavior and physical properties of waterborne UV-curable polycarbonate-based polyurethane dispersion

Cited by 84 publications

References 18 publications

Waterborne polyurethane dispersions synthesized from jatropha oil

Waterborne polyurethane dispersions synthesized from jatropha oil

Preparation of a Fast Water-Based UV Cured Polyurethane-Acrylate Wood Coating and the Effect of Coating Amount on the Surface Properties of Oak (Quercus alba L.)

Synthesis of UV-curable polycarbonate diols (PCDL)-based polyurethane acrylate for negative photoresist

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