Analysis of material classification of salt spray test chamber
Why use PVC plate for salt spray test box? Can PVC plate replace PP plate, glass fiber reinforced plastic, and rigid plastic plate? The following will analyze the benefits and advantages of using PVC plate salt spray test box for everyone:
1. Chemical and physical properties PVC (polyvinyl chloride)
2. Rigid PVC is one of the most widely used plastic materials. PVC is a non-crystalline material.
3. In the actual use of PVC materials, stabilizers, lubricants, auxiliary processing agents, colorants, impact resistance agents and other additives are often added.
4. PVC material has non-flammability, high strength, weather resistance and excellent geometric stability.
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. PVC has strong resistance 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.
8. The shrinkage rate of PVC is quite low, generally 0.2 ~ 0.6%.
According to the progress in the salt spray test box market, FRP and hard plastic plates are gradually replaced by PVC plates, and PP plates are not widely used due to the higher cost and the smaller applicable fields, but if customers need to do copper to accelerate salt spray Tests, or special requirements, etc., our company makes its best efforts to meet the needs of customers.
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