Sikaflex®-505 UV
Sikaflex®-505 UV is a 1-component silane terminated polymer (STP) adhesive sealant that cures on exposure to atmospheric moisture. It exhibits very good adhesion to a wide range of substrates and is weather resistant making it suitable for open joints.
- Contains no solvents or isocyanates
- Low VOC content
- Very good adhesion to a wide variety of substrates
- Very good weathering resistance
- Meets the requirements of AAMA 802.3 Type I and II
- Conforms to ASTM C920, Type S, Grade NS, Class 50, Use T, NT, G and A
PRODUCT BENEFITS
- Contains no solvents or isocyanates
- Low VOC content
- Very good adhesion to a wide variety of substrates
- Very good weathering resistance
- Meets the requirements of AAMA 802.3 Type I and II
- Conforms to ASTM C920, Type S, Grade NS, Class 50, Use T, NT, G and A
Usage
Sikaflex®-505 UV is suitable for interior and exterior sealing as well as simple bonding for a variety of markets including transportation (trailers, recreational vehicles), Industry (metal buildings, HVAC units), and fenestration (window and door manufacturing, window back-bedding). It exhibits very good adhesion to many substrates including aluminum, steel, glass, marble, wood and many different types of plastic. Seek manufacturer’s advice and perform tests on original substrates before using Sikaflex®-505 UV on materials prone to stress cracking. This product is suitable for experienced professional users only. Tests with actual substrates and conditions have to be performed ensuring adhesion and material compatibility.Packaging
| Cartridge | 300 ml |
| Unipack | 600 ml |
| Drum | 50 gal (US) |
Product Details
| Chemical base | Silane Terminated Polymer | |
| Color (CQP001-1) | White, gray | |
| Cure mechanism | Moisture-curing | |
| Density (uncured) | 1.50 kg/l (12.5 lb/gal) | |
| Non-sag properties | Good | |
| Application temperature | ambient, product | 5 – 40 °C (41 – 104 °F) |
| Skin time (CQP019-1) | 30 minutes A | |
| Curing speed (CQP049-1) | (see diagram 1) | |
| Shore A hardness (CQP023-1 / ISO 48-4) | 45 | |
| Tensile strength (ASTM D412) | 1.5 MPa (220 psi) | |
| Elongation at break (ASTM D412) | 200 % | |
| Service temperature (CQP513-1) | -40 – 90 °C (-40 – 194 °F) | |
| Shelf life (CQP016-1) | 12 months B |
| CQP = Corporate Quality Procedure | A) 23 °C (73 °F) / 50 % r.h. | B) storage below 25 °C (77 °F) |
CURE MECHANISM
Sikaflex®-505 UV cures by reaction with atmospheric moisture. At low temperatures the water content of the air is generally lower and the curing reaction proceeds somewhat slower (see diagram 1).
Diagram 1: Curing speed Sikaflex®-505 UV
CHEMICAL RESISTANCE
Sikaflex®-505 UV is generally resistant to fresh water, seawater, diluted acids and diluted caustic solutions; temporarily resistant to fuels, mineral oils, vegetable and animal fats and oils; not resistant to organic acids, glycolic alcohol, concentrated mineral acids and caustic solutions or solvents.
Application
Surface Preparation
Surfaces must be clean, dry and free from grease, oil and dust.
Surface treatment depends on the specific nature of the substrates and is crucial for a long lasting bond. Adhesion and compatibility have to be verified by tests on original substrates.
Application
Sikaflex®-505 UV can be processed at temperatures (climate and product) between 5 °C and 40 °C (41 °F and 104 °F) but changes in reactivity and application properties have to be considered. The optimum temperature for substrate and process material is between 15 °C and 25 °C (59 °F and 77 °F). Sikaflex®-505 UV can be processed with manual, pneumatic or electric driven piston guns as well as pump equipment.
For advice on selecting and setting up a suitable pump system, contact the System Engineering Department of Sika Industry.
Tooling and finishing
Tooling and finishing must be carried out within the skin time of the product. It is recommended using Sika® Slick. Other finishing agents must be tested for suitability and compatibility prior the use.
Removal
Uncured Sikaflex®-505 UV may be removed from tools and equipment with Sika® Remover-208 or another suitable solvent. Once cured, the material can only be removed mechanically.
Hands and exposed skin have to be washed immediately using a suitable industrial hand cleaner and water.
Do not use solvents on skin.
Overpainting
Sikaflex®-505 UV can be best painted within the skin formation time. If painting process takes place after the sealant has built a skin, adhesion could be improved by treating the joint surface with Sika® Aktivator-100 or Sika® Aktivator-205 prior to paint process. If the paint requires a baking process (> 80 °C / 176 °F), best performance is achieved by allowing the sealant to fully cure first. All paints have to be tested by carrying preliminary trials under manufacturing conditions.
The elasticity of paints is usually lower than that of sealants. This could lead to cracking of the paint in the joint area.