Language
- Chinese

language

Tel

Tel

+8618142863185
Follow us

Official Accounts

Official Accounts
Top

News

Detailed Explanation of the Classification of UV 3C Coatings (Part II)

Release time:

2026-06-22 23:05

Detailed Explanation of the Classification of UV 3C Coatings (Part II)

UV 3C coatings come in a wide variety, and can be classified into numerous types depending on the criteria used. Whether based on functional characteristics, application processes, resin systems, or performance priorities, each classification highlights differences in formulation design, application methods, or end-use scenarios. Understanding these classification schemes and their respective features enables more informed product selection in practical applications.

I. Classification by Functional Characteristics

Based on their functional characteristics, UV 3C coatings can be further classified into several types, each tailored to specific application requirements.

1. Scratch-resistant coating

Scratch‑resistant coatings are a fundamental functional category; their high crosslink density and nano‑fillers confer excellent scratch resistance, meeting the stringent surface‑wear‑resistance requirements of 3C electronic products—key performance attributes that most 3C coatings must deliver.

2. Anti-fingerprint coating

Anti-fingerprint and hydrophobic–oleophobic coatings reduce the surface energy of the coating, making it difficult for fingerprints and oily smudges to adhere. They are widely used on high‑touch surfaces such as smartphone touchscreens and casings. By incorporating fluorine‑ or silicon‑based hydrophobic components, these coatings deliver excellent stain‑resistance, effectively minimizing fingerprint residue and enhancing ease of cleaning.

3. Antibacterial Coating

Antimicrobial coatings, by incorporating antimicrobial agents such as silver ions, can inhibit the proliferation and survival of surface‑borne bacteria, and their penetration rate continues to rise driven by public health needs. These coatings are of significant value in medical devices, electronic products used in public facilities, and personal wearable devices.

4. Other Functional Features

In addition, there are other functional coatings, including anti-glare coatings (applied to screen surfaces to reduce ambient light reflection and enhance outdoor readability), UV‑resistant coatings (designed to improve the weatherability of outdoor products and slow down yellowing of the coating), antistatic coatings (used to prevent static charge buildup and reduce dust adhesion), and flame‑retardant coatings (intended to enhance safety and meet specific fire‑safety requirements). Some formulations can also combine multiple tactile and protective features—such as a soft‑touch finish and fingerprint resistance—further expanding the application scope of UV‑curable 3C coatings.

II. Classification by Application Process

Depending on the application process, UV 3C coatings can be classified into types such as clear topcoats and vacuum‑deposited coatings.

1. UV clearcoat

UV clearcoat is applied over colored paint or the substrate to provide a protective, transparent finish and is a commonly used coating for 3C products. Clearcoats are characterized by their high transparency and increased hardness after curing, enabling enhanced surface performance—such as improved abrasion resistance, scratch resistance, and chemical resistance—without altering the underlying color.

2. UV vacuum coating paint

UV vacuum‑coating coatings are used in vacuum‑coating processes to achieve a metallic finish on plastic substrates through a three‑layer structure comprising a primer, a coating layer, and a topcoat. These coatings must meet stringent requirements for platability, adhesion, and weather resistance, and are widely employed in metallized surface treatments for products such as mobile phone housings, enabling plastic parts to exhibit a metallic luster.

III. Classification by Resin System

Based on the resin system, UV 3C coatings can be classified into epoxy, polyurethane, polyester, and pure acrylic types, each tailored to meet specific performance requirements.

1. Epoxy type

Epoxy resins exhibit high hardness and excellent chemical resistance, making them well suited for applications with stringent corrosion‑resistance requirements and offering distinct advantages in environments where resistance to chemical attack is critical.

2. Polyurethane-based

Polyurethane resins excel in flexibility and adhesion, making them one of the most widely used resin types in 3C coatings. By blending polyurethane acrylates with varying degrees of functionality, it is possible to achieve a balanced optimization of hardness and toughness, thereby meeting the stringent performance requirements of coatings for 3C electronic products.

3. Polyester-based

Polyester resins excel in leveling and body, making them ideal for high-gloss topcoats. They deliver exceptional surface smoothness and gloss, well-suited for products with stringent aesthetic requirements.

4. Pure acrylic type

Pure acrylic resins exhibit excellent weather resistance, making them well suited for products intended for long-term outdoor use, as they can maintain good color and gloss stability under UV exposure.

5. New System

Hyperbranched resins and other novel systems are continuously advancing to meet increasingly stringent performance requirements, opening up new possibilities for enhancing the performance and expanding the functionality of UV‑curable 3C coatings.

IV. Conclusion

UV 3C coatings can be classified along three dimensions: functional properties, application processes, and resin systems. Based on functional properties, they are categorized into scratch‑resistant, anti‑fingerprint, antibacterial, and other types, meeting diverse end‑use requirements. By application process, they include clear‑coat formulations and vacuum‑metallized coatings, each suited to specific installation scenarios. And according to the resin system, they comprise epoxy, polyurethane, polyester, pure acrylic, and other families, each with its own performance priorities. These classification schemes overlap and emphasize different aspects, collectively forming a product portfolio that addresses the varied surface‑finishing needs of 3C electronic devices. Understanding these categories enables users to make informed choices in practical applications, aligning coating selection with specific performance criteria, installation conditions, and operational contexts.

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	Good leveling, smooth finish, fast curing, and stain resistance.
B-868H	Organosilicon photocurable resin	Good 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	Good leveling, smooth finish, fast curing, and stain resistance.
B-868H	Organosilicon photocurable resin	Good 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 excellent 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.

Share to:

Analysis of the Curing Requirements for UV 3C Coatings

Detailed Explanation of the Classification of UV 3C Coatings (Part 1)