It is understood that UV-curable coatings do not contain any organic solvents or inert diluents compared to conventional coatings. They do not require heating when cured. They have less environmental pollution, low energy consumption, high efficiency, good chemical stability and good applicability. It is a high-efficiency, energy-saving and environmentally-friendly modern coating that has been widely used in various fields. With the development and application of various photosensitive coatings, one of the keys to the design of UV-curable coatings is how to improve their adhesion to various substrates, because good adhesion is the film's good processing properties, medium resistance and The premise of outdoor weather resistance. Therefore, how to improve the properties of the coating film by improving the adhesion of the coating is a matter of concern to us all. In general, adhesion is improved by adding various powder coating adhesion promoters. Appropriate adhesion promoter is used to enhance the effective contact between the coating film and the substrate, and the adhesion promoter with reactive functional groups can form a strong chemical bond with the surface of the substrate to obtain good adhesion and comprehensive performance. Since the accelerator obtained in the present study is a composite product having a CC monofunctional group and a bifunctional group, it is possible to better cope with problems such as volume shrinkage and shrinkage internal stress at the time of photocuring.
In order to solve the problem of poor adhesion of UV-curable coatings, hydroxyethyl acrylate or hydroxyethyl methacrylate and phosphorus pentoxide are used as raw materials to carry out electrophilic addition reaction under certain conditions to obtain UV-curable phosphoric acid. A powder coating adhesion promoter for the group. The total reaction time was determined to be 3.5 h using an acid value tracking test. Infrared spectroscopy analysis of the product indicated that the hydroxyl groups in the reaction had completely reacted and the formation of the phosphoric acid group and the CC double bond in the product. Comparing the performance of homemade products and commercially available products on different plates, the results show that these two products have a good adhesion promoting effect on UV-curable coatings and polar substrates such as metal, glass and wood, and have established self-made The advantages of the product.
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Rolling tool bag is a type of tool bag that features wheels and a retractable handle, allowing it to be easily transported over longer distances. They are typically made from durable materials such as heavy-duty nylon, canvas, or leather and feature reinforced handles for easy lifting.
Rolling tool bags come in a variety of sizes and styles, ranging from small totes to larger bags with multiple compartments. They may also have additional pockets and compartments for organizing smaller items such as screws, nails, and drill bits.
The benefits of a rolling tool bag include:
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Portability: The wheels and retractable handle make it easy to transport tools and equipment over longer distances without the need for heavy lifting.
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Versatility: Rolling tool bags can accommodate a variety of tools and equipment, making them a versatile option for different trades and applications.
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Easy to organize: Some models feature additional pockets and compartments for organizing smaller items, making it easy to keep tools and equipment organized and easily accessible.
When choosing a rolling tool bag, it is important to consider the size and weight of your tools, as well as the overall durability and quality of the bag. Additionally, consider the size and quality of the wheels for smooth rolling over various surfaces.
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