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The Functions of UV 3C Coatings (Part 1)

Release time:

2026-06-12 23:09

The Functions of UV 3C Coatings (Part 1)

In today’s world, where consumer electronics are ubiquitous in everyday life, the surfaces of devices such as smartphones, laptops, and tablets must not only look aesthetically pleasing but also withstand the rigors of daily use. UV 3C coatings are the key materials that meet this challenge. Leveraging ultraviolet curing technology, they form a dense, protective, and decorative layer on the exterior of electronic products, delivering multifunctional performance and durability. Understanding the role of UV 3C coatings helps illuminate the technological foundations that underpin the surface quality of modern electronics.

I. Protective Effects

Protection is a fundamental and critical function of UV‑3C coatings. During everyday use, electronic devices are frequently exposed to various external factors; without adequate protection, plastic housings can quickly develop scratches, abrasion, and discoloration.

Scratch resistance is a key indicator of protective performance. After curing, UV‑3C coatings form a highly crosslinked polymer network, resulting in a coating surface with high hardness that effectively resists scratches caused by hard objects such as keys, coins, and tabletops. When the coating reaches a sufficient level of hardness, minor everyday abrasions leave no noticeable marks, ensuring the product’s appearance remains pristine for an extended period.

Wear resistance is another critical aspect of protective performance. During use, electronic devices are continually in contact with hands, bag linings, desktops, and other surfaces, subjecting their surfaces to repeated friction. UV 3C coatings exhibit excellent wear resistance, ensuring that the coating remains intact over prolonged use and preventing underlying plastic from being exposed due to abrasion.

Resistance to chemical attack is also a critical component of protective performance. The surfaces of electronic devices are exposed to a wide range of chemicals, including hand sweat, skincare products, alcohol, and cleaning agents. UV 3C coatings exhibit excellent resistance to these substances, preventing softening, discoloration, loss of gloss, or corrosion upon contact. Particularly for handheld devices like smartphones, the coating must withstand the corrosive effects of sweat from users with varying skin types.

In terms of impact protection, although the UV coating is relatively thin, its inherent toughness helps absorb some of the energy upon minor impacts, thereby reducing damage to the housing’s plastic material.

II. Decorative and Aesthetic Functions

Decoration and beautification constitute another core function of UV 3C coatings. The inherent texture and appearance of plastic substrates are relatively plain, making it difficult to meet consumers’ aesthetic expectations. UV 3C coatings enhance the visual quality of products in a variety of ways.

Gloss control is a fundamental technique in decorative coating applications. By fine-tuning the formulation and application process, UV 3C coatings can achieve a range of gloss levels, from high-gloss mirror finishes to deep matte effects. High-gloss coatings deliver a mirror‑like, lustrous surface that appears sleek and refined, making them ideal for products that demand a sophisticated aesthetic; matte coatings, by contrast, offer a soft, understated finish with a smooth, silky touch, exuding an elegant, low‑key appeal while resisting fingerprints.

Color expression is a key aspect of decorative design. UV 3C coatings, through pigment blending, offer an extensive palette—ranging from classic black, white, and gray to vibrant reds, blues, and greens, and from understated metallic hues to dazzling gradient effects—all achievable via the coating process. The advent of colored UV coatings has further expanded design possibilities, freeing electronic product aesthetics from the constraints of the plastic substrate’s inherent color.

Texture simulation is an advanced form of decorative finishing. Through specialized formulations and manufacturing processes, UV 3C coatings can replicate the tactile qualities of various materials: a skin-like texture delivers a warm, soft touch; a velvety finish offers a distinctive hand feel; and a stone‑like texture evokes a natural, organic aesthetic. This capability to simulate textures enables plastic‑cased products to convey a sense of quality that transcends their inherent material.

III. Conclusion

The protective and decorative functions of UV 3C coatings are the two cornerstones of surface treatment for consumer electronics. The protective function enables products to resist scratches, abrasion, and chemical degradation during everyday use, thereby extending their service life; the decorative function imparts plastic housings with rich luster, vibrant colors, and tactile textures, meeting consumers’ aesthetic expectations. Together, these dual roles underpin the fundamental value of UV 3C coatings in the consumer electronics industry.

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 Related Product Recommendations – 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 wetting, 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 outstanding 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 device
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	Excellent flexibility, good 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-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 outstanding 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 outstanding 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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The Functions of UV 3C Coatings (Part II)

The Development of UV 3C Coatings