Preparation and properties of UV-curable polyurethane acrylate / SiO2 composite hard coatings

Fu, Junchao; Yu, Haojie; Liang, Ruihong; Zhang, Chuyin; Jin, Meijin

doi:10.1016/j.porgcoat.2020.106121

Cited by 16 publications

(7 citation statements)

References 38 publications

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“…The introduction of waste natural fillers in PUA matrices needs to be optimized mainly in terms of interfacial adhesion, but it seems a viable and promising route for upcycling agricultural wastes as the mechanical properties achieved compare favorably with those reported in other studies where PUA matrices have been traditionally reinforced with inorganic nanoparticles, such as graphene oxide [32], silica [33,34], indium tin oxide [35] and barium titanate [36]. The introduction of waste natural fillers in PUA matrices needs to be optimized mainly in terms of interfacial adhesion, but it seems a viable and promising route for upcycling agricultural wastes as the mechanical properties achieved compare favorably with those reported in other studies where PUA matrices have been traditionally reinforced with inorganic nanoparticles, such as graphene oxide [32], silica [33,34], indium tin oxide [35] and barium titanate [36].…”

Section: Thermal and Mechanical Characterization Of Pua Compositesmentioning

confidence: 98%

Chemical and Mechanical Characterization of Licorice Root and Palm Leaf Waste Incorporated into Poly(urethane-acrylate) (PUA)

et al. 2021

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A poly(urethane-acrylate) polymer (PUA) was synthesized, and a sufficiently high molecular weight starting from urethane-acrylate oligomer (UAO) was obtained. PUA was then loaded with two types of powdered ligno-cellulosic waste, namely from licorice root and palm leaf, in amounts of 1, 5 and 10%, and the obtained composites were chemically and mechanically characterized. FTIR analysis of final PUA synthesized used for the composite production confirmed the new bonds formed during the polymerization process. The degradation temperatures of the two types of waste used were in line with what observed in most common natural fibers with an onset at 270 °C for licorice waste, and at 290 °C for palm leaf one. The former was more abundant in cellulose (44% vs. 12% lignin), whilst the latter was richer in lignin (30% vs. 26% cellulose). In the composites, only a limited reduction of degradation temperature was observed for palm leaf waste addition and some dispersion issues are observed for licorice root, leading to fluctuating results. Tensile performance of the composites indicates some reduction with respect to the pure polymer in terms of tensile strength, though stabilizing between data with 5 and 10% filler. In contrast, Shore A hardness of both composites slightly increases with higher filler content, while in stiffness-driven applications licorice-based composites showed potential due to an increase up to 50% compared to neat PUA. In general terms, the fracture surfaces tend to become rougher with filler introduction, which indicates the need for optimizing interfacial adhesion.

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Section: Thermal and Mechanical Characterization Of Pua Compositesmentioning

confidence: 98%

Chemical and Mechanical Characterization of Licorice Root and Palm Leaf Waste Incorporated into Poly(urethane-acrylate) (PUA)

et al. 2021

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“…With the development of science and technology, plastics have become an indispensable material in the production of flexible products; however, their application in the coatings field is limited, owing to their low surface hardness and poor wear resistance [6]. Therefore, to improve these properties, the hardening method of UV-curable coatings on the surface of plastics has been considered because of its low cost, convenience, and simplicity [7][8][9][10]. In some cases, pure organic coatings have good compatibility, adhesion, and flexibility with the substrate after curing, owing to their molecular structural characteristics [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Preparation, Characterization, and Properties of UV-Curable Coating Doped with Nano-SiO2

Chen,

Zhong,

Wang

2023

Materials

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In this study, a hydrophobic, wear-resistant ultraviolet (UV)-curable coating was investigated as an alternative to traditional coatings with low hardness and high susceptibility to scratching. The SiO2 nanoparticles were ground and modified using high-energy ball milling, during which the surface energy of nano-SiO2 particles rapidly increased as their particle size decreased. Different proportions of modified nano-SiO2 particles were added to the coating and cured into a film. The structure of the composite coating was analyzed via infrared spectroscopy, scanning electron microscopy, and X-ray diffraction, which confirmed the successful preparation of the composite coating. The mechanical and optical property tests of the coating were investigated. With a 5% nano-SiO2 content, the hardness of the coating reached 5H, whereas the adhesion was poor (2B), and the flexibility was 1. The overall comprehensive performance of the coating was best when the addition amount was 3%. The coating exhibited good hardness, flexibility, and adhesion. The hardness of the coating reached 4H, the adhesion was 4B, the flexibility was 5, the coating haze was 12.38 HZ, and the contact angle was 118°.

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“…Photopolymerization, which uses ultraviolet (UV) light as an energy source to cure photosensitive materials, has many advantages, such as energy efficiency 1 and eco friendliness, 2 high efficiency, 3 speed 4 and time-space controllability. 5 After decades, with the continuous development of the basic theory and application technology of photopolymerization, this kind of technology has been widely applied in the fields of coating, 6 ink, 7 and adhesive.…”

Section: Introductionmentioning

confidence: 99%

Research advances in UV-curable self-healing coatings

Guo

2022

RSC Adv.

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Preparation and properties of UV-curable polyurethane acrylate / SiO2 composite hard coatings

Cited by 16 publications

References 38 publications

Chemical and Mechanical Characterization of Licorice Root and Palm Leaf Waste Incorporated into Poly(urethane-acrylate) (PUA)

Chemical and Mechanical Characterization of Licorice Root and Palm Leaf Waste Incorporated into Poly(urethane-acrylate) (PUA)

Preparation, Characterization, and Properties of UV-Curable Coating Doped with Nano-SiO2

Research advances in UV-curable self-healing coatings

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