Dymax OP-4-20641 Optical Adhesive, Clear Transparent Gel, UV Cure - 30ml Syringe

The Dymax OP-4-20641 UV-Cure Optical Adhesive is a clear, UV- and visible-light-curable material with high transmission across the optical spectrum. Designed for laminating larger optical areas, it offers a very soft, low-modulus profile ideal for managing thermal cycling in fragile optical assemblies. Dymax Ultra Light-Weld^® adhesives contain no nonreactive solvents and cure rapidly upon light exposure, enabling faster processing, higher throughput, and reduced manufacturing costs. This fiber optic UV adhesive is RoHS compliant, meeting Directive 2015/863/EU. Packaged in a 30 ml syringe.

Features & Benefits:

• Fast, full cure in seconds with UV or visible light
• Thick, flowing viscosity suitable for gap filling
• Bonds to plastics
• Strong adhesion to PC (polycarbonate), PEI (polyetherimide), PVC, and TPU (thermoplastic polyurethane)

Applications:

• Bonding and laminating fiber optic couplings, gratings, lenses, and prisms.

Uncured Properties:

• Chemical Class: Acrylated Urethane
• Appearance: Clear, Transparent Gel
• Soluble in: Organic Solvents
• Viscosity (20 rpm): 23,000 cP (nominal)
• Density: 1.06 g/ml

Cured Properties:

• Shore D Hardness: D55
• Glass Transition Temperature Tg: 73°C (163.4°F)
• Refractive Index (20°C): 1.50
• Linear Shrinkage: 0.9%
• Tensile at Break: 13.7 MPa [2,000 psi]
• Elongation at Break: 90%
• Modulus of Elasticity: 55.8 MPa [8,100 psi]
• Boiling Water Absorption (2 h): 5.3%
• Water Absorption (25˚C, 24 h): 2.6%

See datasheet for curing instructions and additional specifications