Performance Characteristics:
•One-component, ready-to-use
•Excellent workability
•Excellent flame retardant performance, UL94-V0 rating
•Complies with the requirements of GB/T 23864, with a fire resistance duration up to 3 hours
•Anti-sagging
•Outstanding adhesion to various substrates
•Paintable and stainable surface
•Eco-friendly & low odor
Model SMT-306F is a one-component eco-friendly waterborne acrylic caulking adhesive with fire retardant performance. It boasts excellent fire resistance and storage stability. This solvent-free sealant causes no solvent pollution; it cures by film formation as water evaporates and polymers bond together, delivering easy application.
Application Areas
- Wall gap sealing
- Cable penetration sealing
Package
- This product is supplied in standard 300ml sealant cartridges, 24 cartridges per carton. Custom filling is available per customer requirements.
| Test Items | Technical requirements | Typical Data | Test Method | |
|---|---|---|---|---|
| Appearance | Fine and uniform paste | Fine and uniform paste | Visual inspection | |
| Density, g/cm³ | 1.44±0.03 | 1.45 | GB/T 13477.2-2018 | |
| Extrudability, g/5s | ≥150 (Nozzle tip diameter: φ3.2 mm, operating pressure: 0.4 MPa) | 190 | GB/T 13477.4 | |
| Sag Resistance | vertical, mm | ≤3 | 0 | GB/T 14683-2017 |
| Tack-free time, min | 40-60 | 40 | GB/T 13477.5 | |
| Cure rate, mm/24h | ≥3.0 | 3.5 | GB/T 13477.22 | |
| Tensile Strength, MPa | ≥0.5 | 0.6 | GB/T 528-2009 | |
| Elongation at Break, % | ≥40 | 57 | ||
| Hardness, Shore A | 60-80 | 70 | GB/T 39693.4-2025 | |
Before application:
- Prior to application, compatibility tests between the sealant and contacting materials as well as adhesion tests on the substrates to be bonded shall be carried out.
Construction Method:
- All application surfaces must be clean, dry and free of contaminants.
- Fit the cartridge into a suitable caulking gun. Cut the nozzle according to joint width, then extrude sealant into the joint to ensure full contact between sealant and joint edges.
- Compact the sealant with a proper tool and scrape off excess material.
- Do not use in areas exposed to permanent water immersion.
- Not to be used for structural joints.
- Application is not recommended when the substrate surface temperature is below 5°C or above 40°C.
- Do not apply when relative air humidity exceeds 80% or substrate moisture content exceeds 12%.
- Application surfaces must be kept clean, dry and free of contaminants.
- Use within the product shelf life; expired product shall not be used.
- Application shall be performed strictly in accordance with the adhesion test procedure.
- Avoid direct contact with skin and eyes. Do not ingest.
- Keep out of reach of children.
- The product releases trace amounts of chemicals during curing. Ensure adequate ventilation at the work area. It is non-toxic to human body after complete curing.
