Nowadays, the salt spray corrosion test box is very common with PP plate and PVC plate material. The two are different according to materials, use and function, so the price, advantages and disadvantages are also different. In fact, the salt spray corrosion test box was originally made of glass fiber reinforced plastic. This material was quickly eliminated. Then there was PVC reinforced hard plastic board. Now some manufacturers are using PP board material. Next, Yashilin Instruments will introduce you to the differences between the three materials.
FRP material: reinforced plastics made of glass fiber or its products as reinforcing materials, called glass fiber reinforced plastic, or glass fiber reinforced plastic. It takes a long time to fade the surface of the fiber. Therefore, it was quickly replaced by a PVC board.
PVC reinforced hard plastic sheet: It has the advantage of corrosion resistance and can be used for neutral salt spray test, which can meet the general salt spray test. However, as the test requirements become more stringent. Many customers need to do acid salt spray test and copper accelerated vinegar instinct test (ie CASS test) require manufacturers to rectify, this way the cost is too high. Therefore, some manufacturers have replaced the salt spray corrosion test box of PVC sheet with PP board.
PP board: The salt spray corrosion test chamber of the PP board relative to the PVC board can withstand higher temperatures. PVC board salt spray: box temperature 35 ° C, air saturated barrel 47 ° C; PP board salt spray: box temperature 50 ° C, air saturated barrel 63 ° C. If the former material is tested by acid salt spray, the time will be the deformation of the test box. The latter material does not, and has the advantage of a wider range of tests, of course, the price is slightly different.
Oil Based Makeup Remover,Natural Makeup Remover,Waterproof Makeup Remover,Oil Makeup Remover
Zchoise Cosmetic Factory , https://www.zchoise.com