Effect of Hydrophilic Bentonite as a Filler on Curing Performance of Pigmented UV Curable Polyurethane Acrylate Coating

Kalav, Berdan; Göcek, İkilem; Kayaoğlu, Burçak Karagüzel

doi:10.1007/s12221-021-0315-4

Cited by 4 publications

(3 citation statements)

References 53 publications

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“…The C=O bonds are mainly derived from the ester bond generated in PUA, thus further proving the successful preparation of PUA. The strong peak at 3410 cm −1 is attributed to the stretching vibration of the N–H bond, which occurs due to the formation of –RCOONH 2 during polymerization curing 24 . The peak at 1134 cm −1 represents the stretching vibration of the C–O–C bond, which occurs due to the production of an ether bond during the curing reaction.…”

Section: Resultsmentioning

confidence: 99%

Preparation of a self-matting, anti-fingerprint and skin-tactile wood coating via biomimetic self-wrinkling patterns

Sun,

Liu,

Long

et al. 2024

Sci Rep

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Inspired by natural wrinkled surfaces, artificial surfaces with biomimetic wrinkled structures have been widely used to improve optical properties, wettability, and antibacterial properties. However, the preparation of wrinkled structures has the disadvantages of long-time consumption and complex processes. Herein, we prepared a self-wrinkling polyurethane-acrylate (PUA) wood coating via biomimetic self-wrinkling patterns by using a light-emitting diode (LED)/excimer/mercury lamp curing system, which was capable of self-matting, anti-fingerprint and skin-tactile performance. By adjusting the irradiation intensity in the curing system, the wavelength (λ) and amplitude (A) of wrinkles on the coating surface were controlled to enhance the coating performance. After curing by the LED, excimer, and mercury lamps at energy intensities of 500, 30, and 300 mW/cm2 respectively, the self-wrinkling coating showed excellent surface performance. The self-wrinkling coating represented low gloss of 4.1 GU at 85°, high hardness of 4H. Interestingly, the coating surface had a high hydrophobicity (104.5°) and low surface energy (29–30 mN/m) and low coefficient (COF) of friction (0.1–0.2), which were consistent with those of the human skin surface. Besides, the wrinkled structure also improved the thermal stability of the coating samples. This study provided a promising technique for the mass production of self-wrinkling coatings that could be used in wood-based panels, furniture, and leather.

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Section: Resultsmentioning

confidence: 99%

Preparation of a self-matting, anti-fingerprint and skin-tactile wood coating via biomimetic self-wrinkling patterns

Sun,

Liu,

Long

et al. 2024

Sci Rep

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“…[10][11][12] The possible reason is that anticorrosive coatings normally contain a large number of inorganic fillers to maintain its anticorrosive performance, 13,14 but inorganic fillers usually have certain absorption or reflection characteristics of UV light, which impedes the curing speed of the UV-curable coating, resulting in the decrease of the double bond conversion rate and insufficient photocuring. [15][16][17] Owing to its unique platelet structure and high aspect ratio, two-dimensional inorganic fillers, such as graphene, 18 mica, 19 glass flake, 20 and boron nitride, 21 have attracted great interests as anticorrosion fillers, which could form a multilayered labyrinth structure to extend the diffusion pathway to aggressive medium and enhance the barrier property of the coating. 22,23 The excellent anticorrosion properties of graphene coatings have been proved by many researchers.…”

Section: Introductionmentioning

confidence: 99%

“…UV‐curable coatings are mainly applied in the fields of wood, plastic, and paper 8,9 but are rarely used in metal protection field 10–12 . The possible reason is that anticorrosive coatings normally contain a large number of inorganic fillers to maintain its anticorrosive performance, 13,14 but inorganic fillers usually have certain absorption or reflection characteristics of UV light, which impedes the curing speed of the UV‐curable coating, resulting in the decrease of the double bond conversion rate and insufficient photocuring 15–17 …”

Section: Introductionmentioning

confidence: 99%

Investigation of the size effect of mica sheets on the anticorrosion behavior of UV‐cured coatings

Xing,

Song,

Liu

et al. 2023

J of Applied Polymer Sci

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In this article, four different grades of mica sheets were used to investigate the influence of the size of mica sheet on the UV‐curing process and the anticorrosion performance of UV‐cured coatings. The dispersion of mica sheets in coating matrix was explored by viscosity and morphology measurements. The curing behavior of the composite coatings was studied by gel content and double bond conversion rate. The dispersing behavior of the mica sheets with different grades was investigated by SEM image and rheology measurement. And the anticorrosive performance of the UV‐cured composite coatings was studied by electrochemical measurements and neutral salt spray tests. It was found that the curing degree of the UV‐cured coating was not affected with incorporation of mica sheet as well as its size. Mica sheets with medium size (10 μm) could be more efficiently dispersed in UV‐cured coating than other grades, which helps to form a denser filler pathway and suppresses the diffusion of corrosive agents into the coating matrix, leading to the lowest water adsorption and best anticorrosion performance. After 45 days of immersion in NaCl solution, the impedance modulus of the UV‐cured composite coating with 10 μm mica sheets did not decrease and still maintained at the initial impedance value. After 1500 h's salt spray test, the corresponding coating remained intact without bubbling, peeling, corrosion, and other defects, whereas the coating with other grades of mica sheets all exhibited corrosion pits and blisters, demonstrating that the size of mica sheet played an important role in enhancing the anticorrosion performance of UV‐cured coatings.

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Obtaining and characterization of bentonite organophilic incorporated with geranyl acetate and its application as mycotoxins’ binder in simulated gastrointestinal fluids

Capelezzo

Celuppi

Macuvele

et al. 2023

Applied Clay Science

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Effect of Hydrophilic Bentonite as a Filler on Curing Performance of Pigmented UV Curable Polyurethane Acrylate Coating

Cited by 4 publications

References 53 publications

Preparation of a self-matting, anti-fingerprint and skin-tactile wood coating via biomimetic self-wrinkling patterns

Preparation of a self-matting, anti-fingerprint and skin-tactile wood coating via biomimetic self-wrinkling patterns

Investigation of the size effect of mica sheets on the anticorrosion behavior of UV‐cured coatings

Obtaining and characterization of bentonite organophilic incorporated with geranyl acetate and its application as mycotoxins’ binder in simulated gastrointestinal fluids

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