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Properties of PP material

Carrie Jan 14,2020 Share this post:

The PP material  is short for polypropylene, so i known as polypropene, is a thermoplastic polymer used in a wide variety of applications. Polypropylene belongs to the group of polyolefins.Polypropylene properties are similar to polyethylene, but it is slightly harder and more heat resistant. It is a white, mechanically rugged material and has a high chemical resistance.PP material is often used in packaging bottles.According to the methyl group align position,the PP material can be falled into three types:Isotactic polypropylene (iPP),Syndiotactic polypropylene (sPP),Atactic polypropylene (aPP).

Mechanical properties,the PP material is the commodity plastic with the lowest density,the polypropylene is normally tough and flexible,Polypropylene has good resistance to fatigue.The PP material is stable in water,its water absorption is only 0. 01%.The PP material has better moldability


vaccine bottles

Thermal properties,the PP material bottle has good heat resistance,the PP material bottle can be sterilized in over 100℃ temperature,it don't deform in 150℃ without outside force.The brittle temperature of PP material bottle is -35℃.The melting point of PP material is 164一170℃.

Chemical properties,Polypropylene at room temperature is resistant to fats and almost all organic solvents, apart from strong oxidants.Non-oxidizing acids and bases can be stored in containers made of PP too.


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