Polypropylene
It is a flexible thermoplastic with quite good strength-to-weight ratio and melting point with high degrees. It does not absorb heat and light and resist the effects of electricity, fatique, acid, and water.
After polyethylene, this plastic is widely manufactured one in the World and used in different industries such as construction, automotive, packaging and labeling.
Features & Applications
Features
- a material with reasonable cost compared to others
- its semi-crystalline nature resulting to have flexural strength with high values
- Friction coefficiency is low.
- Moisture resistance is high.
- Resists strongly to chemical acids and bases.
- shows good resistance for fatigue
- posseses good impact strength
- provides good electrical insulation as a result of its electricity resistance
- easy to fix after being damaged
Applications
- Hinges
- Reusable plastic containers
- as insulation for electrical cables
- Piping systems
- Housewares
- Packaging and labels
- Prosthetic devices
- Plating barrels
- Railroad crossing mechanisms
Machining Options
Other Information
Limitations of Polypropylene
- gets expanded under high temperature degrees, so this limits its applications at high temperatures.
- not strong enough for UV degradation.
- When chlorinated solvents and aromatics used, should not expect good resistance.
- not easy to paint due to its not-strong bonding properties
- Flammable easily
- not strong enough for oxidation
