INTRODUTION
T-6141 resin is a two-functional fluorine-modified acrylate UV resin with low refractive index, partial hydroxyl and carboxyl functional groups, wide adhesion adaptability, rapid curing, good surface drying, and suitable for LED low-energy curing. Applications: optical coatings to reduce reflections and improve imaging clarity, optical fiber applications to reduce signal transmission losses, and solar anti-reflection layers to improve light efficiency.
Performance advantages:
Low refractive index: forms a gradient refraction interface with optical glass (n≈1.5) to reduce Fresnel reflection;
Low viscosity processability: reduces the amount of diluent monomers (such as HDDA, TPGDA) to avoid excessive gloss
Fast surface drying: achieves surface curing within 10 seconds under LED light source, suitable for roll-to-roll continuous coating process
|
Tg(℃) |
32 |
|
MW(GPC) |
1700 |
|
Elongation at Break% |
45 |
|
Colour, Gardner |
2 |
|
Acid value,mg KOH/g |
max. 2 |
|
Viscosity at 25℃,mPa.s |
150-350 |
|
Refractive Index |
1.41 |
|
Specific Gravity |
1.20 |
|
Effective content |
90% |
Core application areas and technical solutions
1. Optical anti-reflection coating
Mechanism of action: Through the wetting matching of fluorinated segments and substrates, a nano-level flat coating (thickness 1-3 μm) is formed, and the reflectivity in the visible light band (400-700 nm) is reduced to less than 0.5%;
Typical case: used for military telescope lens coating, combined with SiO<sub>2</sub>/TiO<sub>2</sub> multilayer film to achieve broadband anti-reflection.
2. Optimization of optical fiber signal transmission
Secondary coating: curing shrinkage <2%, reducing microbending loss (<0.1 dB/km);
Radiation-resistant coating: After adding MOCA crosslinker, UV aging resistance is improved by 300%, suitable for submarine optical cables.
3. Solar cell efficiency enhancement
Anti-reflection layer: After coating on the surface of crystalline silicon, the photoelectric conversion efficiency is increased by 1.2-1.5% (compared with uncoated);
Encapsulation adhesive: used in combination with EVA film, the moisture and heat resistance (85°C/85%RH) meets IEC 61215 standards
.
LED low energy curing adaptability
1. Process requirements
Light source wavelength: 385/395 nm LED, irradiation intensity ≥50 mW/cm²;
Oxygen inhibition: Add 0.5-1% tripropylene glycol diacrylate (TPGDA) as an active diluent.
2. Initiator system
Recommended combination: TPO-L (0.5%) + ITX (0.3%), with a molar extinction coefficient of 200 L/(mol·cm) at 395 nm;
Deep curing: penetration depth >200 μm (50% higher than traditional initiators).
Safety and Storage
Storage conditions: Protect from light, store in a sealed container below 25°C, shelf life 12 months;
Toxicity data: LD<sub>50</sub> (rat oral)>2000 mg/kg, in compliance with REACH regulations
.
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