Preparation and Performance of Thermochromic and Self-Repairing Dual Function Paint Film with Lac Resin Microcapsules and Fluorane Microcapsules

Yan, Xiaoxing; Zhao, Wenting; Wang, Lin

doi:10.3390/polym13183109

Cited by 15 publications

(14 citation statements)

References 29 publications

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“…The orthogonal design of three factors and two levels were designed with "fluorane microcapsule content", "aqueous acrylic resin microcapsule content" and "fluorane microcapsule addition method", as shown in Table 2. According to the relevant report of Yan et al [36], when the content of fluorane microcapsule in aqueous primer or finish is 15%, the thermochromic performance is better. Therefore, the horizontal range of "fluorane microcapsule content" is selected around 15.0%, so 10.0-20.0% is used to determine the best value.…”

Section: Preparation Methods Of Thermochromic Self-repairing Bifuncti...mentioning

confidence: 99%

“…The self-healing microcapsules were prepared by two-step in situ polymerization to inhibit the generation and expansion of microcracks in the coating, which is suitable for the repairing of waterborne coatings. The self-repairing rate of the paint film prepared by the independent addition method of "the fluorane and lac resin microcapsules" is only 12.3% [36]. In comparison, the two groups adopt the method of independent addition, which shows that the coating method can enable the paint film to self repair, but the repair effect of the waterborne acrylic resin is better than that of the lac resin, which has a better function for inhibiting cracks.…”

Section: Self-repairing Propertymentioning

confidence: 97%

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Effects of Thermochromic Fluorane Microcapsules and Self-Repairing Waterborne Acrylic Microcapsules on the Properties of Water-Based Coatings on Basswood Surface

2022

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The effect of the addition of fluorane microcapsules and urea formaldehyde resin (UF) waterborne acrylic resin microcapsules on the comprehensive properties of the water film on the surface of basswood was studied. Three-factor and two-level orthogonal experiments were carried out with “fluorane microcapsule content”, “aqueous acrylic resin microcapsule content” and the “fluorane microcapsule addition method” to prepare a self-repairing thermochromic coating. The optical, mechanical, microstructure and self-repairing properties of the film were optimized by independent experiments on the maximum influence factors of the fluorane microcapsule content. It was concluded that the topcoat with 15% fluorane microcapsules and primer added with 15% water acrylic resin microcapsules had better comprehensive properties. The temperature range was 30–32 °C, the color difference at 32 °C was 72.6 ± 2.0, the 60° gloss was 3.3%, the adhesion was 0 grade, the hardness was 4 H, the impact resistance was 15.0 ± 0.8 kg∙cm, the elongation at break was 17.2% and the gap width was reduced by 3.5 ± 0.1 μm after the film was repaired. The repair rate reached 62.5%. By using microcapsule embedding technology, the repair agent and discoloration agent are embedded in the matrix. The waterborne acrylic resin microcapsules can effectively inhibit crack formation in the coating, and the fluorane microcapsules can achieve the thermochromic property of the coating. This study provides a new research idea for the self-repairing thermochromic dual function of a water-based coating.

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Section: Preparation Methods Of Thermochromic Self-repairing Bifuncti...mentioning

confidence: 99%

Section: Self-repairing Propertymentioning

confidence: 97%

Effects of Thermochromic Fluorane Microcapsules and Self-Repairing Waterborne Acrylic Microcapsules on the Properties of Water-Based Coatings on Basswood Surface

2022

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“…The availability of metal, oxide, composite and non-metallic coatings allows for rationally combining the base and coating materials’ properties. The most frequently used coatings are paint coatings [ 1 , 2 , 3 , 4 , 5 ], polymers [ 6 , 7 , 8 ], and biopolymer films [ 9 , 10 ]. All these types of widespread coatings are used in various fields of technology and medicine.…”

Section: Introductionmentioning

confidence: 99%

Multiclass Level-Set Segmentation of Rust and Coating Damages in Images of Metal Structures

Bembenek

Mandziy

Ivasenko

et al. 2022

Sensors

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This paper describes the combined detection of coating and rust damages on painted metal structures through the multiclass image segmentation technique. Our prior works were focused solely on the localization of rust damages and rust segmentation under different ambient conditions (different lighting conditions, presence of shadows, low background/object color contrast). This paper method proposes three types of damages: coating crack, coating flaking, and rust damage. Background, paint flaking, and rust damage are objects that can be separated in RGB color-space alone. For their preliminary classification SVM is used. As for paint cracks, color features are insufficient for separating it from other defect types as they overlap with the other three classes in RGB color space. For preliminary paint crack segmentation we use the valley detection approach, which analyses the shape of defects. A multiclass level-set approach with a developed penalty term is used as a framework for the advanced final damage segmentation stage. Model training and accuracy assessment are fulfilled on the created dataset, which contains input images of corresponding defects with respective ground truth data provided by the expert. A quantitative analysis of the accuracy of the proposed approach is provided. The efficiency of the approach is demonstrated on authentic images of coated surfaces.

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“…In recent years, the application of thermochromic microcapsules based on fluorane dyes in functional textiles has attracted increasing attention. 19 Thermochromic microcapsules are usually a coreshell structure compound with a thermochromic core composed of a mixture of leuco dye, chromogenic agent and solvent. 15 The color change temperature is regulated by the solvent, and bisphenol A is used as chromogenic agent.…”

Section: Introductionmentioning

confidence: 99%

High sunlight resistant thermochromic smart textiles based on UV absorbing polymer

Zhong

et al. 2022

J of Applied Polymer Sci

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In this study, a new UV absorptive copolymer was prepared and further applied in thermochromic smart textiles in order to improve its application property. Firstly, UV absorptive copolymer was prepared by solution polymerization using a structural monomer (methyl methacrylate, MMA) and a UV absorptive functional monomer (2‐[3‐(2H‐benzotriazol‐2‐yl)‐4‐hydroxyphenyl] ethyl methacrylate, BHEM), which absorbs UV light effectively and has strong absorption at 230, 305, and 340 nm. And then, a light‐resistant thermochromic fabric with a three‐layer structure was prepared via coating technology. The influencing factors on light‐resistant thermochromic fabrics were systematically investigated by controlling polymerization components and copolymer dosage. The fading rate of the optimized light‐resistant thermochromic fabric after 10 h illumination is only 27.9%, which is 60.9% improvement than thermochromic fabric without a protective copolymer. Light‐resistant thermochromic fabrics with a 36 μm UV absorbing polymer coating shows excellent color fastness, including wash fastness (five grades), wet rubbing fastness (five grades), and light fastness (two grades). Moreover, light‐resistant thermochromic fabrics have good color reversibility and fatigue resistance (100 cycles) properties. And this approach provides a feasible optimization scheme for improving the light resistance of thermochromic textiles.

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Preparation and Performance of Thermochromic and Self-Repairing Dual Function Paint Film with Lac Resin Microcapsules and Fluorane Microcapsules

Cited by 15 publications

References 29 publications

Effects of Thermochromic Fluorane Microcapsules and Self-Repairing Waterborne Acrylic Microcapsules on the Properties of Water-Based Coatings on Basswood Surface

Effects of Thermochromic Fluorane Microcapsules and Self-Repairing Waterborne Acrylic Microcapsules on the Properties of Water-Based Coatings on Basswood Surface

Multiclass Level-Set Segmentation of Rust and Coating Damages in Images of Metal Structures

High sunlight resistant thermochromic smart textiles based on UV absorbing polymer

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