The salt spray test chamber is a test for artificially simulating the salt spray environment. The artificial simulation environment test is a scientific summary of the actual environmental impact. The diversification of environmental conditions and the importance of environmental testing also put forward stricter requirements for environmental testing equipment. Therefore, the early stainless steel material has been replaced by a new generation of PVC board, because the PVC board material has more advantages. The following is the superiority of PVC sheet that Yashilin summarized for you: (1) Rigid PVC is one of the most widely used plastic materials. PVC material is an amorphous material. (2) In the actual use of PVC materials, stabilizers, lubricants, auxiliary processing agents, colorants, anti-impact agents and other additives are often added. (3) PVC materials are non-flammable, high-strength, resistant to climate change and excellent geometric stability. (4) The PVC of the salt spray test chamber is very resistant to oxidants, reducing agents and strong acids. However, it can be corroded by concentrated oxidizing acids such as concentrated sulfuric acid and concentrated nitric acid and is also not suitable for the occasions in contact with aromatic hydrocarbons and chlorinated hydrocarbons. (5) The melting temperature of PVC during processing is a very important process parameter. If this parameter is improper, it will cause the problem of material decomposition. (6) The flow characteristics of PVC are quite poor, and its process range is very narrow. In particular, PVC materials with large molecular weight are more difficult to process (this kind of material usually needs to add lubricant to improve the flow characteristics), so PVC materials with small molecular weight are usually used. (7) The shrinkage rate of PVC is quite low, generally 0.2 ~ 0.6%. Uv Nail Lamp,Uv Light For Nails,Nail Dryer,Led Track Lighting Foshan Liqia Hardware Products Co., Ltd. , https://www.liqiamei.com