SIKAFLEX 252
Harmonization Code : 3506.91.90.99 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other
Main features
- Dynamic-Stress Assembly Bonding
- Non-Sag Gap-Filling Application
- Electrically Non-Conductive Bondline
Product Description
Sikaflex-252 is a one-component, moisture-curing polyurethane assembly adhesive for bonding large components exposed to dynamic stresses. The non-sag material provides good gap-filling behavior and a 35-minute open time at 23 deg C and 50% relative humidity. Its cured profile combines 3 MPa tensile strength, 400% elongation, and 2.5 MPa tensile lap-shear strength under ISO 527 and ISO 4587. The adhesive is electrically non-conductive and vibration-damping and is used on timber, coated metals, aluminum, steel, ceramics, GRP, and plastics in vehicle and industrial assemblies.
Key features
- Dynamic-stress bonding: The elastic adhesive is used for assemblies exposed to dynamic loads
- Gap-filling non-sag bead: Good gap-filling and non-sag behavior support controlled application
- Electrically non-conductive: The adhesive is electrically non-conductive
Applications
Bonding large vehicle and industrial components; assemblies subject to dynamic stresses; coated metals, GRP, ceramics, timber, and plastics.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Mechanical Properties
Thermal Properties
Additional Information
As-supplied / before-processing properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Chemical base | 1-component polyurethane | As supplied | |
| Color | Black, white | CQP001-1 | |
| Density | 1.20 | kg/l | Uncured; color dependent |
| Non-sag properties | Good | As supplied | |
| Application temperature | 10 to 35 | deg C | Product and ambient range |
| Skin time | 40 | minutes | CQP019-1; 23 deg C / 50% RH |
| Open time | 35 | minutes | CQP526-1; 23 deg C / 50% RH |
| Shelf life - cartridge / unipack | 9 | months | Storage below 25 deg C |
After-processing / final-state properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Hardness | 50 | Shore A | CQP023-1 / ISO 48-4 |
| Tensile strength | 3 | MPa | CQP036-1 / ISO 527 |
| Elongation at break | 400 | % | CQP036-1 / ISO 527 |
| Tear propagation resistance | 7 | N/mm | CQP045-1 / ISO 34 |
| Tensile lap-shear strength | 2.5 | MPa | CQP046-1 / ISO 4587 |
| Service temperature | -40 to 90 | deg C | CQP509-1 / CQP513-1 |
| Short-term temperature | 130 | deg C | 4-hour exposure |
| Short-term temperature | 150 | deg C | 1-hour exposure |
