High purity sulfur hexafluoride high-temperature decomposition products will lead to the problem of impure gas purity. When we purchase, we should first avoid it. We should find a regular manufacturer to purchase and attach a product test report. Each bottle of gas of Philips has a factory inspection report, which eliminates the problem of impure sf6 gas from the source. In addition, sulfur hexafluoride gas in the equipment shall also be detected and replaced frequently to avoid damage to the equipment.

1. Some toxic products produced when high purity sulfur hexafluoride in electrical equipment acts on high-temperature arc. For example, the decomposition of gas in the arc and the reaction with oxygen will generate toxic substances such as sulfuryl fluoride, sulfuryl tetrafluoride and sulfuryl fluoride.

2. The decomposition products of high purity sulfur hexafluoride in electrical equipment react with the water in them to produce some toxic products. For example, the secondary reaction between SF6 gas decomposition products and water generates hydrofluoric acid, sulfur dioxide, sulfuric acid, etc.

3. High purity sulfur hexafluoride and decomposition products in electrical equipment react with electrodes (Cu-W alloy) and metal materials (AL, Cu) to generate some toxic products. For example, SF6 gas and decomposition products react with electrodes or other materials: ALF3 (solid powder), ALF3 (solid powder), CuF2 (solid powder) and other solid powders.

4. Liming sulfur hexafluoride and decomposition products in electrical equipment react with insulating materials to generate some toxic products. For example, insulating parts such as epoxy phenolic glass fiber cloth board (rod, tube) containing silicon; Or epoxy resin casting parts, molded parts, porcelain bottles, silicone rubber, silicone grease, etc. filled with quartz sand and glass play a chemical role to generate SiF4, Si (CH3) 2F2 and other products.

The content of the article comes from high-purity sulfur hexafluoride: http://www.feiliergas.com