Flame Retardant Underground Seam Repair Butyl Tape is a multifunctional and efficient adhesive tape that can be used in areas such as reinforcement, sealing, protection, and decoration. Widely used in fields such as architecture, electronics, and industry, it has excellent functions such as waterproofing, moisture-proof, insulation, UV resistance, and fire insulation.
Technical Parameters & Specifications (Table)
Below are industry-standard technical parameters and specifications for high-performance Flame Retardant Underground Seam Repair Butyl Tape, tailored to underground engineering requirements:
| Category | Technical Parameters | Specifications (Typical Range) |
|---|---|---|
| Adhesion Performance | Peel Adhesion to Steel (ASTM D3330) | ≥ 35 N/25mm (maintains adhesion after 5000 hours of soil immersion) |
| Shear Adhesion (ASTM D3654) | ≥ 10 N/cm² (resists shear forces from soil pressure or infrastructure movement) | |
| Flame Retardancy | Flame Class (UL 94) | V-0 (self-extinguishes within 10s; no flaming drips) |
| Limiting Oxygen Index (LOI, ASTM D2863) | ≥ 35% (higher oxygen requirement to ignite, critical for underground fire safety) | |
| Smoke Density (ASTM E662) | ≤ 100 (minimizes toxic smoke release in enclosed underground spaces) | |
| Environmental Resistance | Temperature Range (Continuous Use) | -30°C to 80°C (performs in frozen or warm underground soils) |
| Water Absorption (ASTM D570) | ≤ 2% (after 72 hours submersion; prevents swelling or adhesion loss) | |
| Chemical Resistance (ASTM D471) | Resistant to soil acids, alkalis, and petroleum hydrocarbons (common in underground soils) | |
| Physical Properties | Tensile Strength (ASTM D412) | ≥ 2.5 MPa (resists tearing from soil friction or infrastructure expansion) |
| Elongation at Break (ASTM D412) | ≥ 800% (high flexibility to accommodate ground settlement or pipe movement) | |
| Thickness (Butyl Rubber Layer) | 1.0mm – 3.0mm (thicker for high-pressure seams; thinner for precision repairs) | |
| Dimensions | Width | 50mm, 100mm, 150mm, 200mm (custom widths: 30mm – 500mm for large seams) |
| Length per Roll | 5m, 10m (industrial bulk rolls: 20m, 30m; packaged in moisture-proof film) | |
| Color | Black (standard, hides soil stains); gray (for visibility in inspection) |
Classification (Table)
This tape is categorized by target underground infrastructure and flame-retardant mechanism, each optimized for specific repair scenarios:
| Classification Basis | Type | Key Characteristics | Typical Underground Applications |
|---|---|---|---|
| Target Infrastructure | Pipe Seam Repair Type | Extra-thick butyl layer (2.0–3.0mm), high pressure resistance (up to 1.6MPa) | Sealing seams in underground water supply pipes, gas pipelines, or oil transmission lines |
| Cable Jacketing Repair Type | Thin, non-conductive butyl layer (1.0–1.5mm), low smoke emission | Repairing seams in underground electrical cable jackets (e.g., power distribution cables) | |
| Liner Seam Repair Type | High elongation (≥900%), conformable to irregular liner surfaces | Sealing seams in underground geomembrane liners (e.g., landfill liners, wastewater treatment ponds) | |
| Flame-Retardant Mechanism | Additive-Based Type | Flame-retardant fillers (aluminum hydroxide, magnesium hydroxide) mixed into butyl | General underground use (pipes, liners) where low smoke is a priority |
| Reactive-Based Type | Chemical flame retardants (brominated compounds) that react to inhibit combustion | High-risk areas (underground electrical cables) where fire spread must be stopped immediately |
feature & advantage
1. Strength reinforcement:
This tape is composed of aluminum foil and butyl rubber. Aluminum foil has excellent strength and toughness, which can enhance the structural strength and stability of objects, and extend their service life.
2. Waterproof and moisture-proof:
The back of the aluminum foil tape is coated with high-quality butyl rubber, which can effectively prevent water and moisture from penetrating, ensuring that the interior of the object is dry and not affected by moisture.
3. Thermal insulation:
The single aluminum foil surface of the aluminum foil tape can reflect thermal radiation, while the double aluminum foil surface can isolate the air layer, so it can play a very good insulation function. In winter, aluminum foil tape can effectively prevent indoor hot air from flowing out of windows and reduce energy loss.
4. UV resistance:
The outer layer of aluminum foil tape has strong UV resistance, which can be used for a long time in sunlight without aging or deterioration.
5. Fire blocking and thermal insulation:
The aluminum foil mask of aluminum foil tape has good flame retardant performance and is widely used in construction, electronics, aviation and other fields, which can play a good role in fire blocking and thermal insulation.
Hot Tags: flame retardant underground seam repair butyl tape, China flame retardant underground seam repair butyl tape manufacturers, factory
