What are the Advantages of Polypropylene?
1.Polypropylene is readily available and relatively inexpensive.
2.Polypropylene has high flexural strength due to its semi-crystalline nature.
3.Polypropylene has a relatively slippery surface.
4.Polypropylene is very resistant to absorbing moisture.
5.Polypropylene has good chemical resistance over a wide range of bases and acids.
6.Polypropylene possesses good fatigue resistance.
7.Polypropylene has good impact strength.
8.Polypropylene is a good electrical insulator.
Injection Molding Polypropylene:
Polypropylene is a very useful plastic for injection molding and is typically available for this purpose in the form of pellets. Polypropylene is easy to mold despite its semi-crystalline nature, and it flows very well because of its low melt viscosity. This property significantly enhances the rate at which you can fill up a mold with the material. Shrinkage in polypropylene is about 1-2% but can vary based on a number of factors, including holding pressure, holding time, melt temperature, mold wall thickness, mold temperature, and the percentage and type of additives.
