Dymax 4‑20418 is a clear UV/Visible light-curable gel adhesive designed for precision bonding of small components, plastic frames, and glass in applications requiring high accuracy and aesthetic quality.
Features
- Dymax 4‑20418 cures rapidly under UV/Visible light, achieving a tack-free surface within seconds. Its high-viscosity gel (approximately 25,000–45,000 cP) prevents sagging and allows precise placement in narrow gaps and complex geometries.
- The adhesive bonds well to engineering plastics, glass, metals, and electronic components. After curing, it exhibits low shrinkage and high flexibility, reducing mechanical stress on assemblies. The solvent-free, RoHS-compliant formulation is environmentally friendly and user-safe. Optically clear, it maintains transparency without discoloration.
Technical Highlights
- Viscosity: approx. 25,000–45,000 cP
- Hardness (Shore D): 60–70
- Tensile Strength: 10–15 MPa
- Elongation at Break: 150–200%
- Elastic Modulus: 150–250 MPa
- Glass Transition Temperature (Tg): 80–90 °C
- Cure Shrinkage: <1%
- Water Absorption (2 h boil): <2%
- Coefficient of Thermal Expansion (CTE): 100–150 µm/m·°C
Typical Applications: The adhesive is ideal for precision bonding in medical devices, camera modules, sensors, plastic frame assembly, glass screen protection, and bezel sealing in handheld electronics. It suits automated production lines requiring accurate, non-sag dispensing.
Manufacturing Benefits: Rapid cure improves production throughput and is easily integrated into automated UV curing systems. Clear, stable bonds protect product aesthetics, while the gel formulation minimizes waste. The clean, solvent-free formula supports sustainable manufacturing and worker safety.
Contact infomation:
LECI Co., Ltd
R-1901, Saigon Trade Center Bld, 37 Ton Duc Thang Str., Ben Nghe W., Dist. 1, HCM City 70000, VN.
Long Bien, Ha Noi, VN.
Phone: (+84) 901442689 (WhatsApp)
Hotline: 02822202988
Website: lecilaser.com
