Partly crystalline (crystallinity between 60% and 70%)
Mechanical characteristics:
Increased stiffness, hardness and mechanical strength compared to EP
Minor resistance compared to EP
Electrical characteristics:
Similar to EP
Features dielectric support (independent of frequency)
It has a good electrostatic charge (attracts dust)
Thermal characteristics:
At high temperatures the pure PP tends to oxidize and it is therefore necessary stabilisation.
Temperature upper limit 110 ° C (higher reinforced by type)
Melting 158-168 ° C
Combustion behaviour as the EP
Temperature weakening 0 ° C (lowest for modified types).
Resistant to:
Aqueous solutions of inorganic salts, acids and inorganic weak alkaline solutions, alcohol, some oils.
Not resistant to:
Strong oxidizing agents, halogenated hydrocarbons, swelling in aliphatic and aromatic hydrocarbons (gasoline and benzene), particularly at high temperatures