Effect of Coating Process of Photochromic and Thermochromic Composite Microcapsules on Coating Properties for Basswood

Pan, Pan; Yan, Xiaoxing; Zhao, Wenting

doi:10.3390/coatings12091246

Cited by 7 publications

(10 citation statements)

References 48 publications

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“…The photochromic performance of the alkyd resin coating mixed with thermochromic microcapsules and photochromic microcapsules was relatively the worst, with a chromatic difference of 62.5. Because the topcoat was a layer of coating with thermochromic microcapsules instead of a layer of coating with photochromic microcapsules, which affected the film's light response chromaticity to a certain extent, the chromatic difference of the film sample with the photochromic primer is lower than the film sample with the photochromic microcapsules in the topcoat [48].…”

Section: Influence Of Visible Light On Chromatic Difference Of the Filmmentioning

confidence: 99%

Effect of Thermochromic and Photochromic Microcapsules on the Surface Coating Properties for Metal Substrates

Yan

Zhao

2022

Coatings

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A coating with thermochromic and photochromic microcapsules can enhance a product’s attractiveness. Different coating processes may affect the performance of coatings. Therefore, the micromorphology, chemical composition, chromatic difference, gloss, hardness, adhesion, impact resistance, roughness, cold liquid resistance, and ultraviolet photooxidation resistance of the surface coating on the metal substrate were assessed by choosing three coating processes. The thermochromic color difference of the coating with photochromic microcapsules in the primer and thermochromic microcapsules in the topcoat changes greatly. When the temperature reached 80 °C, the maximum color difference of the coating was found to be 23.0. The color difference of the coating with the thermochromic microcapsules in the primer and photochromic microcapsules in the topcoat was the most obvious, with a color difference of 71.7. The gloss of the coating mixed with thermochromic microcapsules and photochromic microcapsules was the highest, which was found to be 81.7 GU. The coating gloss of thermochromic microcapsules in the primer and photochromic microcapsules in the topcoat was found to be 15.6. The mechanical property of the coating mixed with thermochromic microcapsules and photochromic microcapsules was the best—the hardness was found to be 2H, the adhesion was found to be level 1, and the impact resistance was found to be 12.5 kg·cm. The mechanical property of the coating prepared by the other two coating sequences was poor. The coating prepared by the three finishing processes on the metal substrate had sufficient cold liquid resistance, and the gloss of the coating before and after the cold liquid resistance changed slightly. By studying the coating process of thermochromic coating and photochromic coating, a technical reference is provided for creating dual-function intelligent coatings.

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Section: Influence Of Visible Light On Chromatic Difference Of the Filmmentioning

confidence: 99%

Effect of Thermochromic and Photochromic Microcapsules on the Surface Coating Properties for Metal Substrates

Yan

Zhao

2022

Coatings

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“…It has the following characteristics: wear resistance, corrosion resistance, not easy to crack, fine wood grain, and easy to process . Also, basswood has good coloring performance and is easy to dye, making it a suitable substrate . This article uses basswood as original wood (OW) for the experiment.…”

Section: Introductionmentioning

confidence: 99%

Study on Transparent Basswood Dyed with Reactive Dyes and Its Properties

Zhao,

Rong,

et al. 2024

ACS Omega

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In this work, sodium chlorite method was used to remove lignin in basswood and then the wood was dyed with reactive red X-3B dye. Finally, ultraviolet curing resins with a refractive index similar to cellulose were vacuum-impregnated into the wood to obtain red transparent wood (RTW). Nowadays, transparent wood can be given color by various means and has a wide range of application prospects in the field of transparent wood decoration, but the color embodiment is relatively single. The aim was to develop a low-priced, easy-to-use process for the preparation of colored transparent wood with a sound color system. Transparent wood with colors will have more decorative and commercial value. The chemical composition, microscopic morphology, mechanical properties, and optical properties of dyed transparent wood were examined and analyzed. The results of the chemical composition analysis showed that after delignified treatment, the wood lost a large amount of lignin. After the dyeing treatment, the content of cellulose, hemicellulose, and lignin was slightly lost, and reactive dye groups appeared in the wood. Infrared spectra of transparent samples showed that the resin was successfully impregnated into the wood. The microscopic morphology analysis results showed that a small amount of dye molecules aggregated on the cell walls after dyeing treatment, and the resin was impregnated into the porous cellulose skeleton of the wood, filling the wood pores. The analysis of mechanical properties showed that the maximum tensile strength of dyed transparent wood reached 122.31 MPa, which was a higher resistance to tensile force compared to raw wood (with a maximum tensile strength of 97.56 MPa); the elongation at break reached 6.26%, which had better toughness compared to log (4.04%). Optical performance analysis showed that the transmittance of dyed transparent wood reached 81%, and dyeing did not change the transmittance of transparent wood. In addition, after undergoing yellowing resistance experiments, the color difference change of dyed transparent wood was much smaller than that of transparent wood.

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“…To mitigate the impact of external factors such as UV radiation on pyrrole, encapsulation serves as a practical and feasible solution. [12][13][14] high chemical stability, excellent light transmittance, good weather resistance, and biocompatibility. [15,16] It can serve as a stabilized encapsulation material for photochromic microcapsules.…”

Section: Introductionmentioning

confidence: 99%

“…To mitigate the impact of external factors such as UV radiation on pyrrole, encapsulation serves as a practical and feasible solution. [ 12–14 ]…”

Section: Introductionmentioning

confidence: 99%

Preparation of Photochromic Microcapsules of Poly(methyl methacrylate)/Inorganic Metal Oxide Composite Shells with UV‐Resistant Properties and Application to Printing on Cotton Fabrics

Gao,

Dong,

Wang

et al. 2023

Macro Chemistry & Physics

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To further enhance the fatigue resistance of spiropyran‐based photochromic materials and to explore the functionality of organic–inorganic metal oxide microcapsule shell materials, cross‐linked (P(MMA‐PETA)) and homopolymer (PMMA) shells have been developed by cross‐linking TiO2 and hybridizing ZnO on a PMMA matrix. PMMA/TiO2 photochromic microcapsules and PMMA/ZnO photochromic microcapsules with ultraviolet (UV)‐absorbing function are prepared by successfully encapsulating spiropyran photochromic compounds using these two composite shells. The results show that both microcapsules exhibit a complete spherical core–shell structure with good UV resistance and thermal stability. The TG test underlines a 50% coating rate of PMMA/ZnO microcapsules on spiropyran photochromic material, with an optimal ZnO addition of 10% and particle size range from 2 to 8 µm, effectively blocking UV‐A and part UV‐B radiation. Further, a 75% maximal coating rate is observed for PMMA/TiO2 microcapsules on spiropyran with optimal TiO2 addition at 2–4%, a particle size of around 5 µm, diffusely reflecting 48% of UV rays. The photochromic fabrics prepared with PMMA/TiO2 microcapsules have better UV resistance, with a UV protection factor value of 59.48, and excellent fatigue resistance after at least 30 cycles of UV–visible light irradiation.

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Effect of Coating Process of Photochromic and Thermochromic Composite Microcapsules on Coating Properties for Basswood

Cited by 7 publications

References 48 publications

Effect of Thermochromic and Photochromic Microcapsules on the Surface Coating Properties for Metal Substrates

Effect of Thermochromic and Photochromic Microcapsules on the Surface Coating Properties for Metal Substrates

Study on Transparent Basswood Dyed with Reactive Dyes and Its Properties

Preparation of Photochromic Microcapsules of Poly(methyl methacrylate)/Inorganic Metal Oxide Composite Shells with UV‐Resistant Properties and Application to Printing on Cotton Fabrics

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