Polypropylene (Polypropylene, PP) is a semi crystalline thermoplastic. It has high impact resistance, strong mechanical properties, resistance to various organic solvents and acid and alkali corrosion. It is widely used in industry and is one of the most common polymer materials.
Mainly used in the production of all kinds of long and short polypropylene fibers, polypropylene woven bags, packaging bags, injection molding products, etc. for the production of electrical appliances, telecommunications, lighting, lighting equipment and television flame retardant parts, the East Standard testing center prompted: PP does not exist environmental stress cracking problem
Low density, floating on the water surface, temperature -20 - 120 degrees, is one of the most common plastics used for microwave oven. PP is a safe plastic in daily necessities plastics, which is commonly used in food packaging bags.
1 mechanical property
Advantages of polypropylene
1.lower density,just 0.89-091,It is one of the lightest varieties in plastics.
2.Except impact resistance, good mechanical properties are better than those of polyethylene, and good processing properties are obtained.
3.It has high heat resistance and the continuous use temperature can reach 110-120 degrees Celsius.
4.Good chemical properties, almost no water absorption, and no reaction to most chemicals.
5.pure and non-toxic
6.Good electrical insulation
7.The transparency of PP products is better than that of HDPE products.
Disadvantage of polypropylene
1.Products with low cold resistance and low impact strength.
2.Products are easy to be affected by light, heat and oxygen during their use.
3.Tinting is not good.
5.Poor toughness, high static electricity, poor dyeing, printing and adhesion.