Studying the effect of hyperbranched polymer modification on the kinetics of curing reactions and physical/mechanical properties of UV-curable coatings

Mirshahi, Farbod; Bastani, Saeed; Sari, Morteza Ganjaee

doi:10.1016/j.porgcoat.2015.10.015

Cited by 25 publications

(14 citation statements)

References 24 publications

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“…It can be seen that the pencil hardness of the coatings was in the range of 4B-HB, which was obviously effected by the molar ratio of 3-mercaptopropyl to allyl. When the molar ratio of 3-mercaptopropyl to allyl is 1.4, the pencil hardness and surface water contact angle of the coating is the highest (Figure S6), which may be ascribed to the highest cross-linking density [16]. The water absorption is in the range of 0.60-1.03 wt%, which still remains quite low.…”

Section: The Influence Of Molar Ratio Of 3-mercaptopropyl To Allylmentioning

confidence: 99%

“…Hyperbranched polymers have attracted much attention in the field of UV-curable coatings because of their low viscosity, highly branched structure, and rich functional moieties and many experiments have confirmed that the application of hyperbranched polymers in a UV-curable coating can reduce the content of reactive diluent and solvent, which can reduce the emission of V • C [13,[16][17][18].…”

Section: Introductionmentioning

confidence: 99%

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UV-Cured Coatings Prepared with Sulfhydryl-Terminated Branched Polyurethane and Allyl-Terminated Hyperbranched Polycarbosilane

Jiao

Zhang²,

Cheng

et al. 2020

Coatings

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The conventional polyurethane (PU) coatings have poor heat resistance, which will undergo severe pyrolysis when the temperature exceeds 200 °C. To overcome the shortcoming of conventional PU coatings, an ultraviolet (UV)-cured solvent-free hyperbranched polycarbosilane modified PU coatings was prepared by sulfhydryl-terminated polyurethane and allyl-terminated hyperbranched polycarbosilane. The initial decomposition temperature (Td5%) of the UV-cured coating ranges from 258 to 268 °C, which is obviously higher than those of the conventional PU coatings reported. The coating shows fairly low water absorption in the range of 0.6–1.36 wt% and exhibits grade 1, grade 2 and grade 3 adhesion to glass, tin plate and aluminum sheet, respectively.

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Section: The Influence Of Molar Ratio Of 3-mercaptopropyl To Allylmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

UV-Cured Coatings Prepared with Sulfhydryl-Terminated Branched Polyurethane and Allyl-Terminated Hyperbranched Polycarbosilane

Jiao

Zhang²,

Cheng

et al. 2020

Coatings

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“…However, further increase of SiO 2 content from 3.0% to 5.0%, adhesion has been down to level 2. SiO 2 particles will be gathered when the SiO 2 content increased, and SiO 2 particles cannot be evenly dispersed, which leads to the decreased adhesion [12]. In addition, the coating of elasticity will be reduced with the increase of SiO 2 content, which reduces the consumption of energy [13].…”

Section: Fig 1 Effect Of Sio 2 Content On the Hardness Of Waterbornementioning

confidence: 99%

Mechanical and Optical Properties of Waterborne UV Curing Coating Modified by Silica

Yan¹,

Cai²,

Xu³

et al. 2016

Proceedings of the 4th 2016 International Conference on Material Science and Engineering (ICMSE 2016)

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Silica (SiO 2) was used to modify the waterborne ultraviolet (UV) curing wood coatings, and the waterborne UV curing wood coating was prepared by optimizing the process parameters. The mechanical properties of the waterborne UV curing wood coating (hardness, adhesion and impact strength) and gloss were tested. When the SiO 2 content in the waterborne UV curing wood coating was 3%, the waterborne UV curing wood coatings was drying at 40°C for 30 min in the oven firstly, then irradiated with UV lamp for 1 min, the obtained waterborne UV curing wood coating had good hardness, adhesion and impact strength. However, when SiO 2 content of waterborne UV curing wood coating was more than 3%, the mechanical properties decreased. The gloss test showed that the gloss of waterborne UV curing wood coating was elevated with the decreased content of SiO 2. When the SiO 2 content was higher than 3%, the gloss of waterborne UV curing wood coating exhibited matt.

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“…Polymerization by UV rays is an environmentally sensitive method. This method reduces or eliminates solvent emission compared with solvent‐based systems and preserves energy (since the polymerization is carried out at room temperature) . UV‐curing technology has been applied commercially to industrial coatings such as paints, printing inks, varnishes, packaging overcoat films, and adhesives.…”

Section: Introductionmentioning

confidence: 99%

Effects of perfluoro modified sol‐gel additive on UV‐curable phosphorus containing urethane acrylate coatings

Topçu

Baştürk

Karataş

2018

Vinyl Additive Technology

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A series of UV‐curable urethane acrylate (UA) hybrid oligomers containing bis[4‐(ß‐hydroxy propoxy) phenyl] phenyl phosphine oxide (BHPPPO) monomer were successfully synthesized via sol‐gel method. Triethoxysilane modified perfluoropentane diol (Si‐PFN) which is a novel organo alkoxysilane compound was successfully synthesized for the sol‐gel reaction. When the contents of BHPPPO and the sol‐gel precursor increased in the urethane coating formulations, it was determined that the gloss increased from 93° to 146°, the water absorption decreased from 27.2 to 7.9 wt% and the tensile strength increased 95.1MPa from 222.4 MPa. The results of the thermal gravimetric analysis showed that with the addition of BHPPPO and the sol‐gel solution into the UAs the weight losses were shifted to higher temperatures and resulted in increasing the char ruins of them. The limiting oxygen index values of them slightly changed compared to the neat UA. For deionized water/ethylene glycol the contact angle values of the hybrids ranged from 63°/61° to 87°/75°. These results indicate that the hybrid coating films have a hydrophobic surface. Scanning electron microscope studies indicated that between the inorganic and organic phases chemical interaction was reasonable. The scanning electron microscopy‐energy dispersive spectrometry results confirmed the P, Si, and F intensification on the surface of the hybrid coating. These results suggest that the hybrids containing phosphorus have provided a potential application as the coating materials in industry. J. VINYL ADDIT. TECHNOL., 24:E133–E145, 2018. © 2018 Society of Plastics Engineers

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Studying the effect of hyperbranched polymer modification on the kinetics of curing reactions and physical/mechanical properties of UV-curable coatings

Cited by 25 publications

References 24 publications

UV-Cured Coatings Prepared with Sulfhydryl-Terminated Branched Polyurethane and Allyl-Terminated Hyperbranched Polycarbosilane

UV-Cured Coatings Prepared with Sulfhydryl-Terminated Branched Polyurethane and Allyl-Terminated Hyperbranched Polycarbosilane

Mechanical and Optical Properties of Waterborne UV Curing Coating Modified by Silica

Effects of perfluoro modified sol‐gel additive on UV‐curable phosphorus containing urethane acrylate coatings

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