Item Name: Dymax OP-4-20632
Manufacturer: Dymax Corporation
Technologies: UV/Visible light-curable, optically clear adhesive with excellent adhesion to glass and plastics
Color: Clear
Cure Type: UV/Visible light cure
Package Size: Contact to Techniq VN for details.
Shelf Life: Contact to Techniq VN for details.
Dymax Ultra Light-Weld® OP-4-20632 is a high glass transition temperature (Tg) optical adhesive engineered for fiber optic and optical component assemblies. It is a one-component, solvent-free material that cures rapidly under UV/Visible light, ensuring minimal shrinkage and strong adhesion to both glass and metals. Its optically clear formulation and low viscosity make it particularly suitable for high-precision optical bonding applications. The adhesive complies fully with RoHS Directives 2002/95/EC and 2003/11/EC.
The adhesive is developed for use in advanced optical assemblies, specifically where transparency and dimensional stability are critical. Applications include:
Fiber optic coupling assembly
Prism bonding
Optical component assembly
| Category | Property | Value | Test Method |
|---|---|---|---|
| Uncured | Solvent Content | No Nonreactive Solvents | N/A |
| Chemical Class | Acrylated Urethane | N/A | |
| Appearance | Clear Liquid | N/A | |
| Soluble in Organic Solvents | Yes | N/A | |
| Density (g/ml) | 1.14 | ASTM D1875 | |
| Viscosity (cP, 20 rpm) | 480 (nominal) | ASTM D1084 | |
| Cured Mechanical | Durometer Hardness | D80 | ASTM D2240 |
| Tensile Strength (MPa [psi]) | 43 [6,200] | ASTM D638 | |
| Elongation at Break (%) | 3 | ASTM D638 | |
| Modulus of Elasticity (MPa [psi]) | 923 [134,000] | ASTM D638 | |
| Glass Transition Temperature (Tg, °C) | 78 | DSTM 256‡ | |
| Other Cured Properties | Refractive Index (20 °C) | 1.55 | ASTM D542 |
| Boiling Water Absorption (2 h, %) | 4.9 | ASTM D570 | |
| Water Absorption (25 °C, 24 h, %) | 1.1 | ASTM D570 | |
| Linear Shrinkage (%) | 0.39 | ASTM D2566 |
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