There is an introduction to the development process of the salt spray test chamber in the previous chapter, which has been updated and developed to this day. The initial material of the salt spray test chamber was glass fiber reinforced plastic, which was quickly eliminated; then PVC-reinforced rigid plastic plates are now used by some manufacturers. So, what are the advantages and disadvantages of these three materials?
Glass fiber reinforced plastic material: glass fiber or its products are used as reinforced plastic reinforced materials, which is called glass fiber reinforced plastic, or glass fiber reinforced plastic. After a long time, the surface is easy to fade and fibrosis. Therefore, it was quickly replaced by PVC boards.
PVC reinforced rigid plastic board: It has the advantages of corrosion resistance, can be used for neutral salt spray test, and 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 (that is, CASS test) to require manufacturers to rectify, this method is too costly. Therefore, some manufacturers have replaced the salt spray test box of PVC sheet with PP board.
PP board: PP board can withstand higher temperature than the salt spray test box of PVC board. Salt spray of PVC plate: box temperature 35 ℃, air saturated barrel 47 ℃; PP plate salt spray: box temperature 50 ℃, air saturated barrel 63 ℃. If the former material is used for acid salt spray test, it will inevitably be deformed in a long time. The latter material does not, it has the advantage of a wider test range, of course, the price is slightly different.
Compare the advantages and disadvantages of the three materials of the salt spray test chamber
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