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Application Scope of UV 3C Coatings

Release time:

2026-06-24 23:49

UV 3C coatings are UV‑curable formulations specifically designed for computers, communications equipment, and consumer electronics. By curing rapidly, they form protective and decorative surface layers on electronic device housings, making them the mainstream surface‑treatment solution in the 3C industry. As consumer electronics continue to innovate and market demands evolve, the application scope of UV 3C coatings has expanded from its initial focus on computer peripherals to encompass a range of niche markets, including smartphones, wearable devices, and smart home products. Gaining insight into these application areas helps to better understand the industry value and future development trends of UV 3C coatings.

I. Smartphones and Tablets

Smartphones and tablets represent a major market for UV 3C coatings. These coatings are primarily used to treat the surfaces of various components in smartphones and tablets, including back covers, midframes, buttons, fingerprint‑recognition modules, SIM card trays, camera bezels, and more.

These devices are used frequently and exposed to a wide range of environments, placing extremely stringent demands on the overall performance of their coatings. UV 3C coatings must deliver strong adhesion, excellent wear resistance, and superior scratch resistance on plastic substrates, while also meeting requirements for sweat resistance and aesthetic appeal. NCVM (non-conductive vacuum metallization) technology is widely employed in the metallic finish treatment of smartphones, enabling metal-like effects on plastic substrates and imparting a high-gloss metallic appearance without compromising wireless signal transmission.

II. Laptops and Computer Accessories

Laptops and related accessories represent the second-largest application segment for UV‑curable 3C coatings. These coatings are extensively used for surface finishing of components such as keyboards, housings, hinge covers, tablet backplates, and mice. Given the long service life of laptop products, the coatings must maintain both their appearance and performance over many years, placing stringent demands on weather resistance and abrasion resistance. After character printing on keyboard keys, a wear‑resistant coating is applied to ensure that the markings remain intact even under prolonged use.

III. Wearable Devices

Wearable devices represent a rapidly growing, emerging application segment for UV‑cured 3C coatings. Products such as smartwatches, fitness trackers, in‑ear headphones, charging cases, and VR headsets come into prolonged contact with the skin, placing stringent demands on coating adhesion and resistance to sweat. At the same time, as fashion accessories, wearables also require high‑quality aesthetic finishes and tactile experiences. Silicone‑based coatings and PU‑feel coatings are widely used on flexible components like watch straps and headphone cables, delivering a smooth, supple, and resilient touch.

IV. Smart Home Appliances and Consumer Electronics

The smart home appliance sector encompasses a wide array of products, including drones, intelligent robots, electric toothbrushes, smart speakers, educational learning devices, and digital cameras. These products operate in diverse environments, with some exposed to water, cleaning agents, and other substances, thereby demanding coatings that are both water‑resistant and chemically resistant. At the same time, as decorative elements within the home, smart appliances also place high expectations on the color performance and aesthetic quality of their surface coatings.

V. Electronic Circuit Boards and Internal Protection

UV-curable coatings are also used for internal protection in electronic products. UV conformal coatings are specially formulated, UV‑curable protective films designed for printed circuit boards. They undergo rapid crosslinking upon exposure to UV light, achieving full cure in a matter of seconds, and effectively resist moisture, dust, salt spray, mold, and chemical corrosion. These coatings are widely employed in consumer electronics, automotive electronics, industrial control equipment, and other fields, significantly extending the service life of devices.

VI. Automotive Electronics and Interior Trim

UV 3C coating technology has also expanded into the automotive sector, finding applications in interior components such as ambient lighting trim strips, decorative rings, door handles, steering wheels, and vehicle emblems, as well as exterior parts like grilles, fog‑lamp bezels, and exterior door trim. UV‑curable coatings can deliver metallic finishes, translucency, and a wide range of colors on diverse substrates—including PC, ABS, and PP—while meeting the automotive industry’s stringent requirements for adhesion, water resistance, and resistance to atmospheric and damp‑heat aging.

VII. Conclusion

The application scope of UV 3C coatings has expanded from their initial use in coating computer casings to encompass smartphones, tablets, wearable devices, smart home appliances, electronic circuit boards, and automotive electronics, among other sectors. Smartphones and tablets remain key market segments, while emerging categories such as wearables and smart home appliances continue to push the boundaries of UV 3C coating applications. With the steady introduction of new products like foldable smartphones and flexible display devices, the range of applications for UV 3C coatings will broaden further, delivering superior surface protection and decorative solutions for consumer electronics.

Disclaimer: The above content has been compiled from publicly available sources and is provided for reference only. If any infringement occurs, please contact us, and we will address it promptly.

Bossin Recommended Products – 3C Coatings
General-purpose
Product Model/English Abbreviation	Product Name/Product Type	Product Features
B-102	Bisphenol A epoxy acrylate	High hardness, high gloss, chemical resistance, contains 15% TMPTA.
B-151	Modified epoxy acrylate	Low halogen, yellowing-resistant, excellent plating performance, and strong adhesion.
B-165	Modified epoxy acrylate	Good flexibility and strong adhesion
B-216	Aliphatic polyurethane acrylate	Fast curing, high fullness, and excellent toughness.
B-368	Aliphatic polyurethane acrylate	Good toughness, excellent leveling, excellent bend resistance, and excellent heat resistance.
B-574C	Polyester acrylate	Low viscosity, low odor, excellent wettability, suitable for LED UV.
B-601	Aromatic polyurethane acrylate	High hardness, scratch resistance, chemical resistance, and excellent cost-effectiveness.
B-6019	Special functional group acrylate	Good leveling, excellent wettability, resistant to boiling water, and superior color dispersion.
B-609	Aliphatic polyurethane acrylate	Fast curing, high hardness, scratch resistance, and chemical resistance.
B-615A	Aliphatic polyurethane acrylate	Fast curing, excellent toughness, wear resistance, and chemical resistance.
B-619W	Aliphatic polyurethane acrylate	Fast curing, high hardness, excellent toughness, wear resistance, and chemical resistance.
B-6380N	Special functional group acrylate	Excellent adhesion to plastics, strong hiding power, and improved paint film appearance.
B-919B	Aliphatic polyurethane acrylate	Fast curing, high hardness, excellent toughness, and excellent chemical and wear resistance.
Matte
Product Model/English Abbreviation	Product Name/Product Type	Product Features
B-572	Polyester acrylate	Low viscosity, low odor, excellent wettability, suitable for LED UV.
B-650A	Aliphatic polyurethane acrylate	Low viscosity, excellent matting effect, fast curing, and good wettability.
Wearable devices
Product Model/English Abbreviation	Product Name/Product Type	Product Features
B-6211	Aliphatic polyurethane acrylate	Fast curing, high hardness, scratch-resistant, and free of organotin.
Hand feel
Product Model/English Abbreviation	Product Name/Product Type	Product Features
B-328M	Aliphatic polyurethane acrylate	Low gloss, low viscosity, excellent wettability, and a pleasant hand feel.
B-868	Organosilicon photocurable resin	Excellent leveling, smooth finish, fast curing, and stain resistance.
B-868H	Organosilicon photocurable resin	Excellent leveling, smooth finish, fast curing, and stain resistance.
Large-area spraying
Product Model/English Abbreviation	Product Name/Product Type	Product Features
B-374	Aliphatic polyurethane acrylate	Good flexibility, excellent leveling, resistant to abrasion and chemicals, and resistant to yellowing.
Car interior
Product Model/English Abbreviation	Product Name/Product Type	Product Features
B-6063	Special functional group acrylate	High molecular weight, low curing shrinkage
B-6210	Aliphatic polyurethane acrylate	Low viscosity, chemical resistance, environmental resistance, and dual photothermal curing.
B-6263	Special functional group acrylate	Fast curing, high build, boil‑water resistant, and excellent toughness.
B-916	Aliphatic polyurethane acrylate	Low viscosity, solvent resistance, chemical resistance, and steel-wool resistance.
B-919B	Aliphatic polyurethane acrylate	Fast curing, high hardness, excellent toughness, and excellent chemical and wear resistance.
Resistant to steel wool
Product Model/English Abbreviation	Product Name/Product Type	Product Features
B-910A2	Aliphatic polyurethane acrylate	Low viscosity, yellowing resistance, chemical resistance, and steel-wool resistance.
B-916	Aliphatic polyurethane acrylate	Low viscosity, solvent resistance, chemical resistance, and steel-wool resistance.
B-919B	Aliphatic polyurethane acrylate	Fast curing, high hardness, excellent toughness, and excellent chemical and wear resistance.
Oil-resistant pen
Product Model/English Abbreviation	Product Name/Product Type	Product Features
B-868	Organosilicon photocurable resin	Excellent leveling, smooth finish, fast curing, and stain resistance.
B-868H	Organosilicon photocurable resin	Excellent leveling, smooth finish, fast curing, and stain resistance.
Battery casing
Product Model/English Abbreviation	Product Name/Product Type	Product Features
B-431	Cycloaliphatic Specialty Acrylate	Yellowing-resistant, excellent wettability, low viscosity, fast curing
B-548	Polyester acrylate	Withstands high temperatures of 250–280°C.
Solid color paint
Product Model/English Abbreviation	Product Name/Product Type	Product Features
B-519	Self-curing polyester acrylate	Self-initiated photopolymerization performance
B-560	Polyester acrylate	Fast curing and excellent pigment wetting.
Yellowing resistance
Product Model/English Abbreviation	Product Name/Product Type	Product Features
B-151	Modified epoxy acrylate	Low halogen, yellowing-resistant, excellent plating performance, and strong adhesion.
B-160D	Modified epoxy acrylate	Good flexibility, yellowing resistance, and excellent adhesion.
B-216	Aliphatic polyurethane acrylate	Fast curing, high fullness, and excellent toughness.
B-296	Aliphatic polyurethane acrylate	Fast curing, chemical resistance, yellowing resistance, impact resistance
B-431	Cycloaliphatic Specialty Acrylate	Yellowing-resistant, excellent wettability, low viscosity, fast curing
Monomer Recommendation
Product Model/English Abbreviation	Product Name/Product Type	Product Features
BM3231 (TMPTA)	Trimethylolpropane triacrylate	High crosslink density, high hardness, high gloss, and excellent wear resistance.
BM3235 (PET3A)	Pentaerythritol triacrylate	Fast curing, high crosslink density, high hardness, and chemical resistance.
BM3380 (3EO-TMPTA)	Pentaerythritol triacrylate	More flexible and less irritating than TMPTA.
BM4241 (DiTMPTA-80)	Bis(2,3-dihydroxypropyl) tetraacrylate	High crosslink density, high hardness, chemical and wear resistance, and water resistance.
BM4242 (Di-TMPTA)	Bis-trimethylolpropane tetraacrylate	High crosslink density, high hardness, chemical and wear resistance, and water resistance.
BM6261 (DPHA-80)	Dipentaerythritol hexaacrylate	High crosslink density, high hardness, chemical and wear resistance, and water resistance.
BM6263 (DPHA-90)	Dipentaerythritol hexaacrylate	High crosslink density, high hardness, chemical and wear resistance, and water resistance.

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Typical Defects of UV 3C Coatings (Part 1)

How to Choose UV 3C Coatings (Part 2)