The temperature resistance of non-metallic expansion joint skin depends on its specific material composition and design. Based on previous information, the temperature resistance of non-metallic expansion joint skins can range from as low as 300°C to as high as 1200°C as follows:
Silicone cloth skin: Temperature resistance is typically below 300°C, but in some cases, silicone skin with added insulation layer can reach 400°C or even higher. There is information mentioning that silicone skins can withstand temperatures up to 1000°C, but this may refer to specially treated or composite silicone skins.
Fluoroadhesive skin: Suitable for harsher temperature conditions, the temperature resistance range can exceed 300°C, up to 1000°C, and even in some cases, the temperature resistance of non-metallic expansion joints can reach 1200°C.
Regular temperature range: The conventional temperature resistance range of non-metallic expansion joint skin is about 500°C. unless otherwise specified. For applications requiring higher temperature resistance, the temperature resistance of the skin can be improved by adding an insulation layer or adopting a multilayer structure.
Other materials: In addition to silicone and fluorine glue, other materials can be used for non-metallic expansion joint skin, such as polytetrafluoroethylene (PTFE), glass fiber, ceramic fiber, etc. These materials also have different temperature resistance characteristics.
It should be noted that the skin material of non-metallic expansion joints is selected and designed to adapt to a specific working environment, including factors such as temperature, pressure, media type, etc. In high temperature environments, the skin may also need to consider factors such as aging resistance, chemical corrosion resistance, mechanical strength, and elasticity. Therefore, when selecting non-metallic expansion joint skin, the most suitable material and design should be determined according to the requirements of specific application.