Fire sleeve, a high-temperature resistant material, is valued for its fire resistance, molten metal splashes protection, thermal insulation and electrical insulation properties, making it ideal for protecting hoses, cables and tubes.
As a professional manufacturer, Hantai emphasizes not only the performance of fire sleeve but also the production process, particularly the adhesion between the fiberglass sleeve and silicone rubber coating. This adhesion is critical for three aspects.
Strong adhesion ensures that the firesleeve maintains its structural integrity and insulation performance in high-temperature environments, such as industrial furnaces, while minimizing the risk of deformation or damage.
Fire sleeve’s excellent adhesion prevents chemical penetration, enhancing resistance to corrosion, especially in chemical industry applications.
High adhesion improves tensile, compressive and impact resistance, ensuring durability under external forces.
Hantai prioritizes adhesion testing in its production process, using specialized equipment to ensure consistent quality and performance of its fire sleeves.
▼ At Hantai, we carry out daily Adhesion Testing on firesleeve.
● Testing Standard:
GB/T 2971-1995 (equivalent to ASTM D1876 ), Adhesives, T peel strength test method for a flexible-to-flexible test specimen assembly.
● Test Specimen:
Fire sleeve cut-sheet, 25mm*200mm, min. 5 pcs/batch, sampled from daily production lot.
Peel length of 50mm before installation on the testing equipment.
● Specimen Preparation:
Prior to the test, the test specimen shall be adjusted in an environment of 23±2℃ and humidity of 50±5% for at least 2h.
Same environment shall be applied to testing process.
● Testing equipment:
- Properly install the specimen in the testing equipment and ensure even pull is applied across its width.
- Set the test scheme in the system and monitor values throughout the testing process.
● Testing process:
- Under the tensile force, the fiberglass gradually separates from the silicone rubber.
- Observe the change of forces applied during the whole testing process.
At Hantai, we recognize the importance of this adhesion and have implemented rigorous daily testing to guarantee the quality of our fire sleeve. By adhering to the GB/T 2971-1995 testing standard and utilizing advanced testing equipment, we ensure that our fire sleeve meet the highest standards of thermal stability, chemical resistance and mechanical strength. With these measures in place, we are confident that our fire sleeve will provide reliable protection for hoses, cables and tubes in various high-temperature and harsh environments.
