Synthesis and Characterization of UV-curable Hyperbranched Urethane Acrylate

Lin, Juan; Zeng, Xianlin; Youjun, Hou; Shi, Hongju

doi:10.1080/03602550701866568

Cited by 20 publications

(9 citation statements)

References 17 publications

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“…10,11 In our previous studies, a type of UV-curable solventborne hyperbranched polyurethane acrylate coatings system was prepared, and the UV-curing behavior, the mechanical properties and the heat resistance of the UV-cured films had been discussed. 12,13 This article describes the preparation and properties of the UV-curable waterborne hyperbranched polyurethane acrylate dispersions (WHBPUADs). For this purpose, NCO terminal prepolymer (prepolymer I) and COOH terminal prepolymer (prepolymer II) were first produced by addition and monoesterification reaction, respectively.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, photopolymerization kinetics, and thermal properties of UV-curable waterborne hyperbranched polyurethane acrylate dispersions

Yin

Zeng

et al. 2011

J Coat Technol Res

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A series of UV-curable waterborne hyperbranched polyurethane acrylate dispersions (WHBPUADs) were prepared via a three-step procedure based on isophorone diisocyanate (IPDI), hyperbranched polyester (HBP), maleic anhydride (MA), and hydroxy-ethyl acrylate (HEA). The structure of WHBPUADs was characterized by Fourier transform infrared spectroscopy (FTIR) and 1 H nuclear magnetic resonance spectroscopy ( 1 H NMR). FTIR was also applied to research the effect of double bond concentration on the kinetics of photopolymerization. The heat resistance of the cured films was characterized by thermogravimetric analysis (TGA), and their mechanical properties were also measured. The results showed that the double bond conversion (s) and photopolymerization rate (R p ) were affected by the concentration of double bond and viscosity of WHBPUADs. The UV-curable systems with higher double bond concentration and lower viscosity led to higher s and R p . The maximum s and R p reached 93% and 71 mmol g À1 s À1 , respectively. The WHBPUADs films possessed better heat resistance and mechanical properties, and with the increase of crosslink density, the heat resistance and hardnesses were further improved.

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Section: Introductionmentioning

confidence: 99%

Synthesis, photopolymerization kinetics, and thermal properties of UV-curable waterborne hyperbranched polyurethane acrylate dispersions

Yin

Zeng

et al. 2011

J Coat Technol Res

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“…HBPET preparation is much simpler and more convenient for industrial production than that for DDPs or SSPs. Hence HBPETs have been widely used in coatings, polymer‐blending modifications, biological materials and drug carriers . When compared to linear polymers with the same molecular weight, HBPETs have short branch chains, a larger molecular volume and a higher end‐group density.…”

Section: Introductionmentioning

confidence: 99%

Poly(citrate glyceride): a hyperbranched polyester for starch plasticization

Zhang

Cheng

et al. 2018

Polymer International

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Hyperbranched polyesters (HBPETs), terminated with either hydroxyl or carboxyl groups, were prepared from citric acid and glycerol in simple one-step syntheses. The HBPET structure and degree of branching were investigated using Fourier transform infrared and 1 H NMR spectroscopies and gel permeation chromatography. The HBPET plasticizers were combined with a maize starch via cooking and film formation. The mechanical, thermal, paste and structural properties of the plasticized starch composites were studied in detail using differential scanning calorimetry, thermogravimetric analysis, rapid viscosity analysis and X-ray diffraction. The HBPETs reduced the pasting viscosity but slightly increased the pasting temperature of the starch. The smaller breakdown and setback values of the plasticized starch pastes relative to those of native starch suggested weaker retrogradation. Compared with glycerol/starch plasticized films, HBPET/starch composite films had lower crystallinity, lower glass transition temperature and better mechanical and thermal properties. The properties of the plasticized starch samples strongly depended on the terminal groups and the molecular weight of the HBPET plasticizers.

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“…They found that when the ratio of epoxy groups to hydroxyl groups in polyethylene glycol is 2:1, the synthetic resin achieved the lowest viscosity, only 568 MPa s −1 at 25 °C, with fine chemical resistance, soldering resistance, and good adhesion on flexible PCB. In addition, several hyperbranched polymers, exhibiting low viscosity, good toughness, high solubility, and abundant terminal functional groups for UV or thermal curing, have wide application prospects in PCB industry. Besides, Yang et al .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of UV and thermal dual curing oligomer for solder resist ink using ink‐jet printing

Liang

Wang

Feng

et al. 2018

J of Applied Polymer Sci

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A novel solder resist ink for inkjet printing containing the ultraviolet (UV) and thermal dual curing oligomer is introduced in this work. Three kinds of acrylic monomers for the synthesis of the oligomer are successful prepared and their structures are determined by Fourier transfer infrared. Both UV curing process and thermostability are monitored under UV differential scanning calorimetry and thermogravimetric analysis. For the photoreaction process, the oligomer using Lauryl methacrylate as the material of copolymerization possesses the highest reactivity and conversion of carbon-carbon double bond. Besides, this kind of oligomer also owns excellent thermostability, just losing 5.9% of its weight at 288 C. The solder resist inks containing the oligomers and jetting by the inkjet printer are tested with the adhesion, soldering resistance, and other performances, presenting the outstanding heat resistance and wide application prospects.

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Synthesis and Characterization of UV-curable Hyperbranched Urethane Acrylate

Cited by 20 publications

References 17 publications

Synthesis, photopolymerization kinetics, and thermal properties of UV-curable waterborne hyperbranched polyurethane acrylate dispersions

Synthesis, photopolymerization kinetics, and thermal properties of UV-curable waterborne hyperbranched polyurethane acrylate dispersions

Poly(citrate glyceride): a hyperbranched polyester for starch plasticization

Synthesis of UV and thermal dual curing oligomer for solder resist ink using ink‐jet printing

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