Do you know the difference between asbestos gaskets and non asbestos gaskets?
- Date：2022-11-10
- Read：4562
1. Asbestos gaskets are better than non asbestos gaskets. The main components of asbestos gaskets are asbestos, filler, and rubber, among which asbestos and filler are resistant to high temperatures; The main components of most asbestos free gaskets are mineral fibers, organic fibers, fillers, and rubber. The temperature resistance of organic fibers is generally around 200 ℃. Through scientific and technological breakthroughs, the high temperature resistance of Ningbo Pengnuo asbestos free gasket has reached around 300 ℃.
2. Asbestos gaskets have higher mechanical strength than non asbestos gaskets. (1) The surface of asbestos fiber is attached with multivalent metal cations, which is easy to form a strong interfacial bond with negatively charged rubber on the surface, thereby improving the bonding strength of the rubber fiber, that is, improving the mechanical strength of the asbestos gasket. Currently, the direct affinity between various asbestos free mineral fibers and rubber substrates is not as good as asbestos, so the adhesive strength of rubber fibers is not as good as asbestos. (2) Asbestos fibers can be almost infinitely subdivided, with a greater specific surface area than asbestos free mineral fibers, and significant reinforcement effects. (3) The tensile strength of asbestos fibers is higher than that of non asbestos fibers, so the reinforcement effect of asbestos fibers is significant.
3. Asbestos free gaskets have better compactness than asbestos gaskets. Due to the high content of asbestos free gasket filler and varying particle sizes, it can fill the micro gaps of rubber fibers. For example, Ningbo Pengnuo sealing material adopts a material selection screen, and a variety of raw materials are carefully screened to make the material more uniform. In addition, asbestos-free fibers have a solid structure rather than a tubular structure like asbestos fibers, and therefore have better compactness.
4. Asbestos free gaskets are environmentally friendly, while asbestos gaskets are not environmentally friendly. The asbestos fibers contained in asbestos gaskets are prone to silicosis, while non asbestos gaskets do not contain asbestos fibers. It is worth noting that there are currently few manufacturers in China that can produce asbestos free gaskets and asbestos free components such as Ningbo Pengnuo Sealing Materials, so careful selection should be made when purchasing.
2. Asbestos gaskets have higher mechanical strength than non asbestos gaskets. (1) The surface of asbestos fiber is attached with multivalent metal cations, which is easy to form a strong interfacial bond with negatively charged rubber on the surface, thereby improving the bonding strength of the rubber fiber, that is, improving the mechanical strength of the asbestos gasket. Currently, the direct affinity between various asbestos free mineral fibers and rubber substrates is not as good as asbestos, so the adhesive strength of rubber fibers is not as good as asbestos. (2) Asbestos fibers can be almost infinitely subdivided, with a greater specific surface area than asbestos free mineral fibers, and significant reinforcement effects. (3) The tensile strength of asbestos fibers is higher than that of non asbestos fibers, so the reinforcement effect of asbestos fibers is significant.
3. Asbestos free gaskets have better compactness than asbestos gaskets. Due to the high content of asbestos free gasket filler and varying particle sizes, it can fill the micro gaps of rubber fibers. For example, Ningbo Pengnuo sealing material adopts a material selection screen, and a variety of raw materials are carefully screened to make the material more uniform. In addition, asbestos-free fibers have a solid structure rather than a tubular structure like asbestos fibers, and therefore have better compactness.
4. Asbestos free gaskets are environmentally friendly, while asbestos gaskets are not environmentally friendly. The asbestos fibers contained in asbestos gaskets are prone to silicosis, while non asbestos gaskets do not contain asbestos fibers. It is worth noting that there are currently few manufacturers in China that can produce asbestos free gaskets and asbestos free components such as Ningbo Pengnuo Sealing Materials, so careful selection should be made when purchasing.