1. What sets asbestos sealing materials apart from asbestos-free sealing materials, and why? Asbestos sealing materials exhibit superior heat resistance compared to asbestos-free alternatives. Traditional asbestos sealing materials primarily consist of asbestos, fillers, and rubber. The asbestos and fillers within these materials are known for their ability to withstand extreme temperatures. On the other hand, most asbestos-free sealing materials rely on mineral fibers, organic fibers, fillers, and rubber. While the organic fibers in asbestos-free materials can typically handle temperatures up to around 200°C, advancements in technology have allowed some brands like Bode to develop asbestos gaskets capable of withstanding temperatures of up to approximately 1000°C.
2. Mechanical strength is another key difference. Asbestos sealing materials tend to have greater mechanical strength than their asbestos-free counterparts. This is partly due to the unique properties of asbestos fibers. The surface of asbestos fibers contains polyvalent metal cations that bond strongly with negatively charged rubber surfaces, enhancing the adhesion between rubber and fibers. In contrast, the affinity between non-asbestos fibers and rubber is not as strong. Additionally, asbestos fibers can be divided into extremely fine strands, providing a larger surface area that enhances reinforcement. Furthermore, the tensile strength of asbestos fibers surpasses that of non-asbestos fibers, further contributing to their superior mechanical performance.
3. Density also varies between the two types. Asbestos-free sealing materials often display better density than asbestos sealing materials. This is because Bode’s asbestos-free materials incorporate a high concentration of fillers with varying particle sizes, allowing them to fill microscopic gaps in the material more effectively. Precision screening processes during production ensure uniformity in the final product. Moreover, unlike asbestos fibers, which have a tubular structure, asbestos-free fibers are solid, contributing to their enhanced density.
4. Environmental considerations play a significant role as well. Asbestos-free sealing materials are eco-friendly, whereas asbestos sealing materials are not. The asbestos fibers present in traditional sealing materials pose serious health risks, including the potential to cause silicosis in humans. Asbestos-free materials, however, do not contain asbestos fibers, making them a safer option. It's important to note that only a handful of manufacturers, such as Shangcai Bode, produce entirely asbestos-free products. Therefore, consumers should exercise caution when selecting these materials.
5. Globally, the dangers of asbestos materials have led to bans in many advanced economies like Europe, the U.S., and Japan. Over time, China is expected to follow suit, phasing out asbestos sealing materials in favor of asbestos-free options. This shift reflects a growing awareness of the environmental and health impacts associated with asbestos use.
Aluminum doors are doors with aluminum alloy as the frame and inlaid glass. The following is its relevant introduction:
1. Structural composition
Aluminum alloy frame
The aluminum alloy frame provides a stable support structure for aluminum doors. Aluminum alloy has the advantages of high strength, light weight, and corrosion resistance. Its profiles can be made into various shapes and sizes according to different design requirements, such as common squares, rectangles, etc., and can be anodized, powder sprayed and other surface treatments to achieve beautiful and durable effects.
Glass part
Glass is an important part of aluminum doors, with functions such as lighting and transparent vision. According to different needs, ordinary transparent glass, frosted glass, tempered glass, hollow glass, etc. can be selected.
Ordinary transparent glass has good light transmittance, but its safety and heat insulation and sound insulation performance are relatively poor. Frosted glass can protect privacy to a certain extent and is suitable for places with certain privacy requirements, such as bathrooms. Tempered glass has high strength, blunt-angle particles after breaking, good safety, and is often used in public places or places with high safety requirements. Hollow glass has better heat insulation and sound insulation performance, and is suitable for places where the indoor environment needs to be kept comfortable.
2. Types
Sliding aluminum door
This type of door uses tracks and pulleys to push and pull the door leaf left and right. Its advantages are space saving and easy operation. It is suitable for places with small space or not suitable for swing door opening, such as partitions between balconies and indoor areas, entrances and exits of small shops, etc. However, the sealing performance of sliding aluminum doors is relatively weak, and it may not be as good as swing doors in terms of sound insulation, heat insulation and preventing dust from entering.
Swing aluminum door
Swing aluminum doors are connected by hinges and can be opened inward or outward. It has good sealing performance and can effectively block dust, rain, noise, etc. from the outside. The safety of swing doors is also high, and they are suitable as entrance doors for residential buildings or partition doors between indoor rooms. However, swing aluminum doors need to occupy a certain space when opened, and have certain requirements for the surrounding space.
3.Advantages
Aesthetics: The transparency of the glass of the aluminum glass door can make the space appear more open and bright, and has a high decorative value.
Strong and durable: The aluminum alloy material has high strength and is not easy to deform, which can ensure the long-term use of the door.
Good sealing: The aluminum glass door can effectively block the dust, noise and temperature changes from the outside.
Corrosion resistance: The aluminum glass door can adapt to different environmental conditions and is not easy to rust.
In commercial places such as shopping malls and office buildings, aluminum glass doors are often used in storefronts, office partitions, etc.; in homes, they are also commonly seen in areas such as balcony doors and kitchen doors.
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