What are the main properties of PVC, the difference between soft and hard PVC, etc.?
attention:103 answer:1 offer a reward:0
Away from the problem with
- Unsolveddestoon
- 2021-08-01 19:32
Best answer
No best answer
All the answers
- 1Flooranonymity
- 2021-08-05 08:57
Properties:
1. Rigid PVC is one of the most widely used plastic materials. PVC material is a non-crystalline material.
2.Stabilizers, lubricants, auxiliary processing agents, pigments, anti-impact agents and other additives are often added to PVC materials in actual use.
3. PVC material has non-flammability, high strength, weather resistance and excellent geometric stability.
4.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 not suitable for 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. Especially the high molecular weight PVC material is more difficult to process (this kind of material usually needs to add lubricant to improve the flow characteristics), so the PVC material with small molecular weight is usually used.
7. The shrinkage rate of PVC is quite low, generally 0.2~0.6%.
Difference:
1.Soft PVC contains softener (this is also the difference between soft PVC and hard PVC), which is easy to become brittle and difficult to store, so its application range is limited.
2.Hard PVC does not contain softener, so it is flexible, easy to form, not easy to be brittle, and has a long storage time, so it has great development and application value.
1. Rigid PVC is one of the most widely used plastic materials. PVC material is a non-crystalline material.
2.Stabilizers, lubricants, auxiliary processing agents, pigments, anti-impact agents and other additives are often added to PVC materials in actual use.
3. PVC material has non-flammability, high strength, weather resistance and excellent geometric stability.
4.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 not suitable for 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. Especially the high molecular weight PVC material is more difficult to process (this kind of material usually needs to add lubricant to improve the flow characteristics), so the PVC material with small molecular weight is usually used.
7. The shrinkage rate of PVC is quite low, generally 0.2~0.6%.
Difference:
1.Soft PVC contains softener (this is also the difference between soft PVC and hard PVC), which is easy to become brittle and difficult to store, so its application range is limited.
2.Hard PVC does not contain softener, so it is flexible, easy to form, not easy to be brittle, and has a long storage time, so it has great development and application value.