United Adhesives OP4035
- Chemical Family
- Silicones
United Adhesives OP4035 is an optically clear silicone potting firm gel.
Product families
- Encapsulants
Other characteristics
- Cure Method
- Heat Cure
- Product Type
- 1K (1 component) Adhesive, Potting Compound
- 1K (1 component) Adhesive
- Potting Compound
- Application Area
Connectors, Electronic Components, Housing, LEDs, Optical Applications; Connectors; Electronic Components; Housing; LEDs; Optical Applications
- Application Method
- Injection
- Color
- Transparent
- Safety
OP4035 silicone contains neither toxic nor corrosive substances that might require special handling precautions. General hygiene regulations should be observed.
- Markets
- Electrical & Electronics
- Storage
OP4035 has a shelf life of at least 6 months when stored at < 5°C freezer in the originally sealed container. Storage beyond the date specified does not necessarily mean that the product is no longer usable. In this case however, the properties required for the intended use must be checked for quality assurance reasons.
- Shelf LIfe
- 6 months at 5°C (Viscosity double)
- Cure
- Heat Cure
- Technology
- Ready-to-Use Products
- Packaging Type
- Pails
- Characteristic
OP4035 is a one-part water clear potting gel. It is a flowable, addition-curing, silicone that cures at elevated temperature to a very firm optically clear rubbery gel for casting or injection molding of high performance optical components. It has noncorrosive and self-priming adhesion to various substrates. It stays thermo-optically stable with heat and UV exposure and will not yellowing over time. OP4035 can be automated to dispense from pails or hand extruded from syringe.
- Labeling Claims
- Non-Corrosive
- Application Methods
- Injection
- Typical Applications
- Pot / encapsulate optical parts
- Coat various opt-electronic components
- LED, solar or other optical applications
- Seal lids, covers, housings, connectors
- Vibration dampening
- Thermal stress coupling
- Processing Instruction
Important! OP4035 is platinum cure system. Please keep applied surface / housing clean and avoid using this material on any place that contains sulfur, amine, phosphorous, organo-metals, acid, etc. because these contaminants could inhibit the cure the material. Please let the compound thoroughly thaw after taking it out from freezer. This typically needs half to one hour depending on the size of container.. We recommend running preliminary tests to optimize conditions for the particular application. Comprehensive processing instructions can be obtained by contacting directly to United Adhesives Inc.
- Special Features and Benefits
- Optically clear firm gel
- Non-yellowing and thermo-optically stable
- One component and ready to apply
- Very soft for stress compliance
- Excellent dielectric properties
- Mechanical shock and vibration damping
- Low outgassing and minimal volatile
- Broad range of temperature stability
Technical data
Table 1 of 2
2 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Density | 0.98 | Gram /cc | ASTM D792 |
| Viscosity (25°C) | 4600.0 | cP.s | ASTM D2196 |
Table 2 of 2
16 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Coefficient Of Thermal Expansion | 280.0 | ppm/°C | IPC-TM-650 |
| Cure Time (125°C) | 20.0 | Minutes | DSC |
| Cure Time (65°C) | 2 - 3 | Hours | Durometer |
| Cure Time (80°C) | 15.0 | Hours | Durometer |
| Dielectric Constant (100 Hz) | 2.5 | — | ASTM D150 |
| Dielectric Strength | min. 480 | Volt/mil AC | ASTM D149 |
| Dissipation Factor (100 Hz) | max. 0.003 | — | ASTM D150 |
| Elongation | 160.0 | % | ASTM D638 |
| Hardness | 35.0 | Shore A | ASTM D2240 |
| Pot / Work Life (In Closed Container, 25°C) | min. 1 | Week | Viscosity double |
| Refractive Index (589 Nm, 25°C) | 1.41 | — | ASTM D542 |
| Tensile Strength | 4.2 | Mpa | ASTM D638 |
