Explain the heat resistance grade of insulating materials

Due to the different raw materials of products, the performance of finished products can also be divided into high and low. Various grades of insulating materials are used in different industries! The insulation properties of insulating materials are closely related to temperature. The higher the temperature, the worse the insulation performance of the insulating material. In order to ensure the insulation strength, each insulating material has an appropriate maximum allowable working temperature. Below this temperature, it can be used safely for a long time. If it exceeds this temperature, it will age rapidly. According to the heat resistance, the insulating materials are divided into grades y, a, e, B, F, h and C. the temperatures corresponding to each heat resistance grade are as follows: Class Y insulation can withstand 90 ℃, class a insulation can withstand 105 ℃, class E insulation can withstand 120 ℃, class B insulation can withstand 130 ℃, class F insulation can withstand 155 ℃, class H insulation can withstand 180 ℃, and class C insulation can withstand more than 200 ℃. Insulating materials also have temperature resistance above 1000 ℃, such as mica board, ceramic fiber board, etc. These high temperature resistant insulating materials are mostly used in high temperature furnaces such as medium frequency furnaces. The main properties of insulating materials are: high temperature resistance and insulation strength!