Advantages and Disadvantages of UV Print, Five Main Components of UV Print
UV Varnish refers to ultraviolet light curing paint, also known as photoinitiated paint, light curing paint, uv paint is named after the curing method of paint, and is a new type of paint product widely used in modern industrial industries. It is automatically rolled and flow-coated on the furniture board/paper by machinery and equipment, and the initiator is decomposed under the irradiation of ultraviolet light (wavelength: 320-390nm), which generates free radicals, triggers resin reaction, and instantly solidifies into membrane.
First, the advantages of uv varnish
1. The biggest feature of uv varnish is that the color is more stable than other paints, it will not turn yellow due to the increase of time, and the solid content is extremely high, and the paint film can be fixed in the shortest time. The film itself is relatively hard, and also has the characteristics of acid and alkali resistance, scratch resistance, etc., and is not easy to be damaged, so it is one of the best materials for baking varnish door panels.
2. The second advantage of uv varnish is environmental protection. Low-carbon life is popular now. In the production process of uv paint, no substances harmful to human health are added, so uv varnish will not cause harm to construction workers. During use, UV varnish will not emit harmful gas, so any consumer can use it with confidence, and its construction is relatively simple, which reduces a lot of construction difficulty for construction workers.
Second, the disadvantages of uv varnish
The uv varnish needs a lot of production equipment in the production process. Many manufacturers are unwilling to invest more money in this area, because once these equipment are in operation, the daily consumption is relatively large. If no large orders are received, the production Manufacturers are generally unwilling to produce.
Although uv varnish has good performance, its topcoat effect is worse than that of PU topcoat, so it is a product in the middle segment. There is an extreme mode in the current consumption level and technical content. Best, it doesn't matter if the price is expensive, or the quality is poor but the price is cheap, and uv varnish does not meet either of the two.
3. Several components of uv paint
The most important components of uv paint are five components: photosensitive resin, crosslinking monomer, photosensitizer, solvent and additive.
1. The photosensitive resin determines the performance of the coating film
2. The role of the cross-linking monomer is to have a polymerization reaction with the photosensitive resin, cross-link and solidify to form a film together and dissolve the resin, and also have the function of a solvent.
3. The photosensitizer is mainly used as an initiator substance in the composition of uv paint.
4. The solvent plays a great role in the uv paint. The addition of the solvent can solve the problems that the cross-linking monomer cannot overcome, such as increasing the wetting effect and hardening effect of the coating. Auxiliaries mainly include stabilizers, accelerators, anti-sagging agents, etc.
5. Commonly used additives for UV paint include leveling agents (such as ethyl cellulose, cellulose acetate butyrate), anti-sagging agents, stabilizers, defoamers, accelerators, etc.
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