We all know that ordinary plastics often have their own […]
We all know that ordinary plastics often have their own characteristics and defects, and modified plastics change the properties of plastics. The modified plastic parts can not only achieve the strength properties of some steels, but also have a series of advantages such as light weight, rich color and easy forming. So, what is the performance of PP modified plastics?
In recent decades, the consumption level of Chinese people has been greatly improved with the rapid growth of the economy. The consumption upgrade has enabled China's automobile, construction and other industries to enter a period of rapid expansion and growth, as people's requirements for plastic performance continue to increase. China is becoming the largest potential market for global modified plastics and the driving force for major demand growth.
PP materials are widely used due to their outstanding sources, low density, good mechanical balance, chemical resistance, easy processing and low price. But the general PP material. Can not meet the special requirements of automotive bumpers, instrument panels, windshields, engine fans and other components, so the general PP material must be modified to pp modified plastic performance to meet the requirements.
Physicochemical properties of pp modified plastics
Poor impact resistance at low temperatures
Difficult to be painted or glued
The molding surface reinforced with glass fiber is not smooth
Polypropylene provides a balance of properties and price points that most thermoplastics cannot achieve.
Polypropylene is easy to form and has good chemical and mechanical properties.
Pp modified plastic properties Glass fiber reinforced polypropylene improves dimensional stability, warpage resistance, rigidity and strength. The heat distortion temperature of 40% glass fiber reinforced polypropylene at 264 psi can be increased to 149 °C. The thermal expansion coefficient of polypropylene reinforced with 40% glass fiber is reduced to half.
When a chemical coupling agent is added, the pp-modified plastic properties of the glass fiber reinforced polypropylene can significantly improve its tensile strength and flexural strength beyond the general glass fiber reinforced polypropylene.