1. What sets asbestos sealing materials apart from asbestos-free ones? Primarily, asbestos sealing materials boast superior heat resistance compared to most asbestos-free options. This is because asbestos sealing materials typically include asbestos, fillers, and rubber, where the asbestos and fillers possess excellent heat resistance properties. On the other hand, many asbestos-free sealing materials rely on mineral fibers, organic fibers, fillers, and rubber, with organic fibers generally having a temperature limit of around 200°C. Through extensive research, Bode asbestos gaskets have achieved an impressive maximum heat resistance of approximately 1000°C.
2. Mechanical strength is another key difference. Asbestos sealing materials tend to offer greater mechanical strength than asbestos-free ones. This is due to several factors: asbestos fibers carry polyvalent metal cations on their surface, which strongly bond with negatively charged rubber surfaces, enhancing the overall strength of the material. Conversely, the affinity between non-asbestos mineral fibers and the rubber matrix isn't as strong, reducing bonding strength. Additionally, asbestos fibers can be divided into much finer strands, giving them a larger specific surface area compared to non-asbestos fibers, which enhances their reinforcing effect. Lastly, the tensile strength of asbestos fibers surpasses that of non-asbestos fibers, further contributing to their superior reinforcement capabilities.
3. Asbestos-free sealing materials exhibit better density than asbestos sealing materials. This is largely because Bode's asbestos-free materials incorporate a high proportion of fillers with varying particle sizes, allowing them to effectively fill the tiny gaps within the material. Bode Sealing employs precise material selection techniques and advanced screening methods to ensure uniformity in their products. Furthermore, unlike asbestos fibers, which have a tubular structure, asbestos-free fibers are solid, leading to improved density and overall performance.
4. Environmental friendliness is a significant distinction. Asbestos sealing materials contain fibers that can pose serious health risks, including causing silicosis in humans. In contrast, asbestos-free sealing materials are free from these harmful fibers. It’s important to note that only a few manufacturers, like Shangcai Bode, can produce 100% asbestos-free materials. Thus, consumers should exercise caution when selecting products.
5. Given the well-documented dangers of asbestos materials, many developed nations, including Europe, the U.S., and Japan, have long since banned their use. While China is progressively phasing out asbestos sealing materials, the shift toward asbestos-free alternatives is ongoing. This transition underscores the growing global awareness of health and environmental safety in industrial applications.
Aluminum external opening door refers to a door that opens outward with aluminum alloy as the main material, and has the following characteristics:
Advantages:
Light weight: The density of aluminum alloy material is relatively low, which makes the overall weight of aluminum external opening door lighter, which is more convenient and labor-saving for both installation and daily use. During the handling and installation process, the physical requirements for construction workers are relatively low, and the load-bearing pressure on the building structure is also reduced.
High strength: After reasonable processing and treatment, aluminum alloy has high strength and can withstand large external forces. Therefore, aluminum external opening doors are sturdy and durable, not easy to deform, can maintain good use status for a long time, and are suitable for various different use environments.
Corrosion resistance: Aluminum alloy has good corrosion resistance. In outdoor environments, it can resist the erosion of natural factors such as rain, sunlight, wind and sand, is not easy to rust or fade, and has a long service life. Even in harsh environments such as humidity, acid and alkali, it can maintain good performance.
Good sealing: High-quality aluminum external opening doors are usually equipped with sealing devices such as sealing strips, which can effectively prevent outdoor dust, rain, noise, etc. from entering the room, improving the comfort and quietness of the room.
Beautiful appearance: Aluminum alloy can be subjected to a variety of surface treatments, such as anodizing, electrophoretic coating, powder coating, etc., which can present different colors and textures to meet the aesthetic needs of different consumers. At the same time, the design styles of aluminum exterior doors are diverse, which can match various architectural styles and enhance the overall aesthetics of the building.
Good energy saving: Some high-end aluminum exterior doors use broken bridge insulation technology, which can effectively prevent the transfer of heat, improve the thermal insulation performance of doors and windows, reduce energy consumption, and save energy costs for users.
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