Effect of UV Top Coating Microcapsules on the Coating Properties of Fiberboard Surfaces

Polymers, Год журнала: 2024, Номер 16(15), С. 2098 - 2098

Опубликована: Июль 23, 2024

The commonly used ultraviolet ray (UV) curing coatings have the characteristics of fast speed, high hardness, strong abrasion resistance, etc. However, self-healing properties UV after being damaged still need to be improved. Self-healing microcapsules can alleviate this problem. top coating itself has good properties, so it directly chosen as core material microcapsules. added increase achieve purpose better protection and fiberboards. were prepared in different contents characterize effect on physical, chemical, a fiberboard surface. 1#, 2#, 3# that with emulsifier HLB values 10.04, 10.88, 11.72, respectively, at 2.0%, 4.0%, 6.0%, 8.0%, 10.0%. applied using method two primers coatings, which no microcapsule was primer, tested analyzed. results showed when content greater than close excessive density produced stacking extrusion between As result, could not flow out smoothly part ruptured. outflow efficiently utilized, thus leading decrease rate. 2# 4.0% made reach rate 26.41%. 6.0% up 26.58%. 1# had highest among three groups, 27.32%. group best comprehensive chromatic aberration ΔE 4.08, gloss 1.10 GU, reflectance 17.13%, an adhesion grade 3, hardness 3H, 3 impact roughness 1.677 μm. An investigation surfaces provide support for optimization also innovative ideas preparation surfaces.

Язык: Английский

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Effect of Melamine Formaldehyde Resin Encapsulated UV Acrylic Resin Primer Microcapsules on the Properties of UV Primer Coating

Polymers, Год журнала: 2024, Номер 16(16), С. 2308 - 2308

Опубликована: Авг. 15, 2024

Ultra-Violet (UV) coatings are widely adaptable of substrates and produce low emissions volatile organic compounds. UV can extend service life by adding self-healing microcapsules that restore integrity after sustaining damage. In this study, coating was used as a core material; were produced added to the enhance its property, providing good protection for both substrate. primer prepared with material melamine formaldehyde resin wall material. The containing more than 98.0% solids content mainly composed epoxy acrylic resin, polyester trihydroxy methacrylate, trimethyl photo initiator. preparation process optimized. Further, better microcapsules, effects alongside comprehensive properties studied. best follows: wall-core mass ratio 1:0.50, Triton X-100 Span-20 emulsifiers an HLB value 10.04, microcapsule reaction temperature 70 °C, time 3.0 h. When quantity increased in coating, color difference ΔE increased, gloss decreased, transmittance elongation at break then roughness rate first decreased. addition reached 2.0%, 1.71, 106.63 GU, 78.80%, 3.62%, 0.204 μm, 28.56%, which primer. To improve coatings, modified technology, gave property. application range broadened. Based on previous research results further refined study using itself

Язык: Английский

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Evaluation of 3D-Printed Connectors in Chair Construction: A Comparative Study with Traditional Mortise-and-Tenon Joints

Materials, Год журнала: 2025, Номер 18(1), С. 201 - 201

Опубликована: Янв. 5, 2025

The present paper investigates the possibility of replacing traditional L-type corner joint used in chair construction with a 3D printed connector, manufactured using Fused Filament Fabrication (FFF) method and black PLA as filament. connector was designed to assemble legs seat rails stretchers, it tested under diagonal tensile compression loads. Its performance compared that mortise-and-tenon joint. Stresses displacements jointed members were analyzed non-linear Finite Element Method (FEM) analysis. Both employed build prototypes made from beech wood (Fagus sylvatica L.). Digital Image Correlation (DIC) analyze vicinity chairs. Seat backrest static load tests carried out order verify if chairs withstand standard loading requirements. Results indicated exhibited equivalent mechanical recorded displacement values 3D-printed connectors higher than those reaching 0.6 mm on X-axis 1.1 Y-axis, without any failures maximum vertical approximately 15 kN applied seat. However, successfully withstood loads for seating tests, accordance EN 1728:2012, structural failure. This presents new approach manufacturing sector, potential applicability other types furniture.

Язык: Английский

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Preparation and Optimization of Thermochromic Microcapsules as a Ternary System of Crystal Violet Lactone: Bisphenol A: Decanol Encapsulated with Urea Formaldehyde Resin in a UV-Curable Primer

Polymers, Год журнала: 2025, Номер 17(7), С. 851 - 851

Опубликована: Март 22, 2025

Coatings can achieve the property of changing color with temperature variations by adding thermochromic microcapsules, which bring a variable surface to substrate. Ultraviolet ray (UV)-cured primers have advantages fast curing rate, low-temperature curing, and low pollution. Thermochromic microcapsules expand application range UV primers. were synthesized through an orthogonal test, using crystal violet lactone, bisphenol A, decanol as core materials in 1:4:50 mass ratio, urea formaldehyde resin wall material. The effects addition batches urea, ratio solution hydrophilic-lipophilic balance (HLB) value emulsifier, core-to-wall on yields, encapsulation rates, differences (ΔE), releases during synthesis investigated. results normalized, ΔE primary reference for analysis. indicate that HLB emulsifier was key factor affected microcapsule performance. In single-factor adjusted within 6.00 10.00. It found when 10.00, exhibited best comprehensive performance, yield 43.29%, rate 45%, 4.60, concentration released 1.310 mg/L. 11# optimal morphology better performance compared 14# microcapsules. Different amounts these added primer investigate mechanical optical properties primer. main component polyurethane acrylic resin, propylene glycol diacrylate, hexanediol diacrylate. When at 10%, fracture elongation 17.44%, roughness 0.15 μm, visible light transmittance 83%. Microcapsule technology used modify primers, endowing them expanding

Язык: Английский

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A Review on the Effect of Wood Surface Modification on Paint Film Adhesion Properties

Coatings, Год журнала: 2024, Номер 14(10), С. 1313 - 1313

Опубликована: Окт. 14, 2024

Wood surface treatment aims to improve or reduce the activity of wood by physical treatment, chemical biological activation other methods achieve purpose modification. After modification, paint film adhesion performance, gluing wettability, free energy and visual properties would be affected. This article explore effects different modification on coating films. Modification significantly improves film, thereby extending service life coating. Research showed that external force improved hydrophilicity wettability changing its structure texture, thus enhancing Additionally, high-temperature heat reduced risk cracking peeling eliminating stress moisture within wood. Chemical impregnation utilized organic inorganic substances stability durability Organic effectively filled cell wall increased density, while enhanced forming stable bonds. Composite combined advantages above technologies comprehensive through multiple treatments, showing superior durability. Comprehensive analysis indicated selecting appropriate method was key for types application environments.

Язык: Английский

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Effect of Two Pomelo Peel Flavonoid Microcapsules on the Performance of Waterborne Coatings on the Surface of Poplar Boards

Coatings, Год журнала: 2024, Номер 14(8), С. 937 - 937

Опубликована: Июль 26, 2024

Two types of microcapsules were added to the coating separately. The specifications poplar board 50 mm × 8 mm. antibacterial rate surface gradually increased with increase in microcapsule content, and activity for Staphylococcus aureus was slightly higher than that against Escherichia coli. Influenced by change wood grain’s color on itself, both had no significant effect chromaticity value difference surface, as well reflectance visible light band. glossiness decreased gloss loss content. With hardness groups slightly, roughness gradually. adhesion melamine-resin-coated pomelo peel flavonoid reduced, impact resistance not significantly affected. Chitosan-coated coating, when content higher. Comprehensively, 9.0% chitosan-coated a better overall performance, activities coli 70.6% 77.6%, respectively. 6.70, 53.9%, reflectivity 50.60%, H, grade 1, 2, 2.10 μm. results provide technical references application flavonoids materials.

Язык: Английский

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The Effects of Urea–Formaldehyde Resin-Coated Toddalia asiatica (L.) Lam Extract Microcapsules on the Properties of Surface Coatings for Poplar Wood

Coatings, Год журнала: 2024, Номер 14(8), С. 1011 - 1011

Опубликована: Авг. 9, 2024

Urea–formaldehyde resin was used as a wall material and Toddalia asiatica (L.) Lam extract core to prepare urea–formaldehyde resin-coated microcapsules (UFRCTEMs). The effects of UFRCTEM content the mass ratio core-to-wall (Mcore:Mwall) on performance waterborne coatings poplar surfaces were investigated by adding topcoat. Under different Mcore:Mwall microcapsules, increased, glossiness adhesion gradually decreased, color difference value increased. cold liquid resistance, hardness, impact resistance all improved, roughness antibacterial rates against Escherichia coli Staphylococcus aureus both rise, rate slightly higher than that coli. When microcapsule 7.0% 0.8:1, surface coating wood excellent. 3.43 GU, light loss 75.55%, ΔE 3.23, hardness 2H, level 3, 1, 3.759 µm. excellent, grades citric acid, ethanol, cleaning agents 1. 68.59% 75.27%, respectively.

Язык: Английский

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Effect of Two Types of Pomelo Peel Flavonoid Microcapsules on the Performance of Water-Based Coatings on the Surface of Fiberboard

Coatings, Год журнала: 2024, Номер 14(8), С. 1032 - 1032

Опубликована: Авг. 14, 2024

In order to achieve antibacterial properties in water-based coatings, two types of pomelo peel flavonoid microcapsules were added coatings and decorated on the surface fiberboard. The substrates tested analyzed. rate groups fiberboards gradually increased with increase content microcapsules. color difference both slightly, glossiness decreased, gloss loss greatly, reflectivity slightly. adhesion did not change significantly, roughness increased, hardness melamine-resin-coated impact resistance slightly improved. Compared results coating without substrate at same content, effect fiberboard was decreased. Overall, 9.0% chitosan-coated demonstrated superior performance, morphology, enhanced properties. 73.7% against Escherichia coli, 77.4% Staphylococcus aureus. 3.85, 90.0%, 20.19%. HB, level 1, 3, 1.94 μm. This study explored providing a technical basis for application

Язык: Английский

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Effect of Two Types of Chitosan Thermochromic Microcapsules Prepared with Syringaldehyde and Sodium Tripolyphosphate Crosslinking Agents on the Surface Coating Performance of Basswood Board

Coatings, Год журнала: 2024, Номер 14(9), С. 1118 - 1118

Опубликована: Сен. 2, 2024

In order to investigate the effect of thermochromic microcapsules on surface coating performance basswood board, two types prepared with syringaldehyde and sodium tripolyphosphate crosslinking agents were added a UV primer coated board. The color-change board as agent was better than that agent, color difference varied more significantly temperature. glossiness relatively weak. containing showed an overall increasing trend increase in microcapsules, change gentle. increased first then decreased amount increased. addition had no significant reflectance visible light band Among groups samples, hardness significant. adhesion level did not change. Neither impact resistance comprehensive analysis, at content 4.0% performance, morphology, effect, moderate mechanical properties. found be 21.0 25 °C, reflectivity 57.06%, 3H, five, three.

Язык: Английский

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The Influences of Selected Factors on Bending Moment Capacity of Case Furniture Joints

Applied Sciences, Год журнала: 2024, Номер 14(21), С. 10044 - 10044

Опубликована: Ноя. 4, 2024

This study experimentally investigated the effects of selected factors on bending moment capacity (BMC) case furniture joints. The main aim was to explore mixed applications wood-based materials and fasteners in manufacturing reduce material costs. examined face member material—particle board (PB), plywood (PL), block (BB)—edge (PB, PL, BB), joint shape (T-shape L-shape) BMC. Additionally, evaluated type (two eccentrics (TE), two dowels (TD), one eccentric dowel (ED)), BB) BMC for L-shaped results showed that significantly affected joint. BMCs T-shaped joints were greater than those joints, regardless edge members, except when made PL. For with PL higher compared others. Joints constructed TE exhibited ED TD same type. PB, an increase approximately 3.0 Nm 2.0 ED, respectively. 9.1 4.1 TD, BB, increases 7.0 6.6 TD. followed by PB. However, assembled there no significant difference among three materials. ratios half-sum 0.73, 1.04, 0.79 These suggest predominantly influences indicating potential costs combining different types.

Язык: Английский

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