Abstract
Micron silver particles prepared by the chemical reduction method, urea formaldehyde resin-coated nano-silver solution microcapsules, and nano-silver solution were used as three kinds of antibacterial agents. These were added to a water-based primer on the surface of Tilia europaea in contents of 1.0%, 4.0%, 7.0%, 10.0%, 13.0%, and 16.0%. In order to achieve the best comprehensive performance of the water-based primer, the mechanical, optical, and antibacterial properties of the three antibacterial coatings with different contents of silver antibacterial agents were explored. It was concluded that when the antibacterial agent content was 4.0%, the color difference, impact resistance, adhesion, and gloss of water-based primer on the Tilia europaea surface were better. When the antibacterial agent content added was 16.0%, the antibacterial properties of the three groups of coatings improved to 94.89%, 81.75%, and 83.98%, respectively. The results provide a research idea for the preparation of antibacterial coatings on the surface of wood furniture.
Highlights
Wooden furniture is frequently used in daily life and is often eroded by microorganisms [1,2,3]
(3) Preparation of urea formaldehyde resin-coated nano-silver solution microcapsules: At the speed of 600 rpm, the wall material of urea-formaldehyde prepolymer was dripped into the core emulsion, and the amount of citric acid monohydrate was added to the above mixture to adjust the pH value to 2.5–3.0
The micron silver particles, commercial nano-silver solution with a content of 100 ppm, and urea formaldehyde resin-coated nano-silver solution microcapsules were used as three kinds of silver antibacterial agents, which were added into the Dulux transparent coating according to the mass fractions of 1.0%, 4.0%, 7.0%, 10.0%, 13.0%, and 16.0%, respectively (Table 2)
Summary
Wooden furniture is frequently used in daily life and is often eroded by microorganisms [1,2,3]. The nano-silver antibacterial agent has good antibacterial effects and high activity [9]. Bhullar et al [16] encapsulated silver nanoparticles as an antibacterial agent in the PCL microfiber structure, and the prepared coatings had inhibitory effects on Staphylococcus aureus and Escherichia coli and had high antibacterial activity. Le et al [17] prepared a SiO2 -Ag composite antibacterial agent and dispersed it into water-based acrylic paint, which significantly improved the adhesion, wear resistance, and thermal stability of the paint, and found that it had good antibacterial activity against Escherichia coli. According to different addition amounts, the water-based primer added with the silver antibacterial agents was coated on the Tilia europaea surface to prepare the bacteria-resistant coating. The purpose was to improve the antibacterial effect without losing the performance of the original coating, to provide a basis for the application of the antibacterial coating on wood surface
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