Characteristics and applications of various UV curable resins

UV curing (UV) resin is a kind of photosensitive resin with relatively low molecular weight. It has groups that can carry out UV curing reaction, such as various unsaturated double bonds or epoxy groups. It is the main component of UV curing products (UV coating, UV ink, UV adhesive, etc.), and its performance basically determines the main performance of the cured material.

At present, the domestic UV curable resins mainly include epoxy acrylate, polyurethane acrylic resin, polyester acrylic resin, amino acrylic resin and photo imaging alkali soluble resin.

Characteristics and applications of various UV curable resins

1. Epoxy acrylic resin is the most widely used and the largest amount of UV curing resin at present. Due to its simple synthesis process, convenient source of raw materials, low price, fast light curing speed, high hardness, high gloss, excellent chemical resistance, good heat resistance and electrical properties, epoxy acrylic resin is widely used as the main resin of light cured paper, wood, plastic and metal coatings, light cured ink and light cured adhesive. The main varieties are bisphenol A epoxy acrylic resin, phenolic epoxy acrylic resin, epoxy oil acrylate and various modified epoxy acrylic resin.

2. Polyurethane acrylic resin is also a widely used, large amount of light curing resin. Polyurethane acrylic resin is widely used in UV curable paper, wood, plastic and metal coatings, UV curable inks and UV curable adhesives because of its excellent comprehensive properties, such as excellent wear resistance and flexibility, good chemical resistance, impact resistance and electrical properties of the cured film, and good adhesion to plastics and other substrates. The main varieties are aromatic and aliphatic polyurethane acrylic resin.

3. Polyester acrylic resin is also a commonly used light curing resin. Because the resin has low odor, low irritation, good flexibility and pigment wettability, it is often used in light curing color paint and light curing ink together with epoxy acrylic resin and polyurethane acrylic resin.

4. Amino acrylic resin is often used in UV curable coatings and UV curable inks together with epoxy acrylic resin and polyurethane acrylic resin due to its good heat resistance and weather resistance, good chemical resistance and high hardness.

5. Photo imaging alkali soluble resin is a resin specially used for photo imaging liquid solder resist ink. It contains carboxyl groups and can be developed and imaged with alkaline water. The cured film has excellent electrical properties, chemical resistance and heat resistance. The main varieties are maleic anhydride copolymer and epoxy acrylic resin modified by maleic anhydride.