Glass fiber reinforced PP injection molding products in the fiber length between 0.2~0.6mm belongs to the short glass fiber, the injection molding products in the received external force damage, the fiber will break;The fiber length greater than 0.6mm is a long glass fiber, which will be removed from the injection molding product when damaged by the outside world.The properties of long glass fiber reinforced PP and short glass fiber reinforced PP materials are described below:

High impact toughness (even at low temperatures), high strength and hardness, safe impact mode, better high temperature resistance, creep and fatigue resistance durability, low wear characteristics, good dimensional stability, good appearance.In the long glass fiber reinforced PP, the tensile strength can reach 120MPa when the glass fiber content is 40%.When the glass fiber content is 70%, its tensile strength is 30MPa, which is similar to that of PP without glass fiber reinforcement. Long glass fiber reinforced PP material is widely used in automotive, construction, aerospace and other fields.

High rigidity, high specific strength, low thermal expansion coefficient, good wear resistance, good creep resistance.Short glass fiber reinforced PP is widely used in engineering and auto parts.