| Advantages of Polypropylene
Impact (some grades) and wear resistant. Flexible, can have very high elongation before breaking. Resistant to acids and bases.
- Homopolymer
- Processability, Good
- Stiffness, Good
- Food Contact Acceptable
- Impact Resistance, Good
- Copolymer
- Impact Resistance, High
- Flow, High
- Chemically Coupled
Disadvantages of Polyproplyene
It is sensitive to thick sections in your part which may cause voids, bubbles or sink. Poor dimensional accuracy. Low mechanical and thermal properties. Poor resistance to organic solvents. Price is low to very low.
- Degraded by UV
- Flammable, but retarded grades available
- Attacked by chlorinated solvents and aromatics
- Difficult to bond
- Several metals accelerate oxidative degrading
- Low temperature impact strength is poor
Background of Polypropylene
Polyproplyene was discovered in 1954 and grew a strong popularity very quickly. Because of extensive research, five main variations of Polypropylene have emerged as: homopolymers, impact (block) copolymers, random copolymers, rubber modified blends, and specialty copolymers.
Additional descriptive content about Polypropylene can be found on the Huntsman Corporation website.
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