Home / News

PP Plastic Performance Introduction

Jul. 28, 2020


Brief introduction of raw materials

PP raw material, chemical name: polypropylene, features: low density, rigid strength, hardness and heat resistance are better than low-pressure polyethylene, can be used at about 100 degrees.


Raw material performance

Physical properties: Melt flow rate 16g/10min

Shrinkage rate 2%-2.5%

Heat distortion temperature 85℃

Mechanical properties: hardness 85

Tensile strength 33MPa

Flexural modulus 1350MPa

Notched impact strength 15kg.cm/cm

Physical and mechanical properties:

A. Strength and rigidity are better than low-pressure polyethylene.

Compared with other plastics, polypropylene has a greater bending fatigue life;

B. The product is sensitive to the gap

Therefore, sharp corners should be avoided during product design, otherwise, stress will be concentrated;

C. The tensile properties are very good, with excellent fiber-forming properties;

D. The wear resistance of polypropylene is worse than that of hard polyethylene but better than polystyrene.

Thermal performance:

A. It has good heat resistance, its melting point is 164~170℃

PP Plastic Hand Basket can withstand boiling disinfection at a temperature above 100℃;

B. Without external force, the temperature will not deform even at 150℃, and it can be used continuously at 110℃ under low load;

C. The resistance to stress relaxation is also good at 90℃, and the low-temperature use temperature can reach -15~20℃;

D. Its catalytic temperature is -35℃ (the catalytic temperature of polyethylene is -60℃).

Electrical performance:

A. Excellent electrical insulator, and because it does not absorb water, it is not affected by air humidity;

B. The breakdown voltage is also high.

But it is a slow-burning material. If the product is required to avoid burning,

Use polypropylene material with a flame retardant release agent. Polypropylene has a low dielectric constant and high dielectric strength.

Chemical performance: Polypropylene has good resistance to chemical erosion and contamination, especially resistance to environmental stress cracking. At room temperature, there is almost no solvent that can dissolve it.

Environment-resistant type: At room temperature, polypropylene plastic is practically completely protected from moisture. In addition to antioxidants for outdoor use of polypropylene, light stabilizers are also required.

PP Plastic Performance Introduction

Contact Winleader

Guangdong Winleader Metal Products Co., Ltd.

Copyright © Guangdong Winleader Metal Products Co., Ltd. All Rights Reserved | Sitemap