How to Choose the Proportion of Polypropylene for Hollow Plate Extrusion Machines
DATE：2023/11/4 10:24:59 / READ： / SOURCE：This station
In the PP plastic hollow plate extrusion machine, it is very important to choose the correct proportion of polypropylene. This article will introduce how to choose the correct proportion of polypropylene from the characteristics, production process, and application fields of polypropylene.
Polypropylene is a thermoplastic plastic with the following characteristics:
1. Good mechanical properties: Polypropylene has high hardness and strength, as well as good toughness and ductility.
2. Good heat resistance: Polypropylene has a high melting point and can withstand higher temperatures.
3. Good chemical resistance: Polypropylene has good corrosion resistance to chemical substances such as acids and alkalis.
4. Good electrical insulation: Polypropylene has good electrical insulation performance and can be used as an electrical insulation material.
2、 Production process of hollow plate extrusion machine
In the hollow plate extrusion machine, polypropylene is made into hollow plates by extrusion molding. The process of extrusion molding includes steps such as raw material melting, extrusion, and cooling solidification. In the melting stage of raw materials, polypropylene particles need to be melted to become a flowing melt. In the extrusion stage, the melted polypropylene melt is fed into the screw cavity of the extruder, and the polypropylene melt is extruded into the shape of a hollow plate through the screw and mold of the extruder. During the cooling and curing stage, the hollow board needs to be cooled and cured to ensure its stable shape.
3、 Correct selection of polypropylene ratio
It is very important to choose the correct proportion of polypropylene in the hollow plate extrusion machine. The proportion of polypropylene directly affects the performance and quality of hollow panels. Generally speaking, the higher the proportion of polypropylene, the higher the hardness and strength of the hollow board, but the toughness and ductility will decrease. Therefore, when selecting the proportion of polypropylene, it is necessary to consider the actual application needs of hollow boards.
The higher the proportion of polypropylene, the higher the hardness and strength of the hollow board. When the proportion of polypropylene reaches a certain level, the hardness and strength of the hollow board tend to stabilize. Therefore, when selecting the proportion of polypropylene, it is necessary to determine the proportion of polypropylene based on the actual application needs of hollow boards. If the hollow board needs to have high hardness and strength, the proportion of polypropylene can be appropriately increased.
2. The effect of polypropylene ratio on the toughness and ductility of hollow panels
The higher the proportion of polypropylene, the lower the toughness and ductility of the hollow board. If the hollow board needs to have good toughness and ductility, the proportion of polypropylene can be appropriately reduced. Meanwhile, during the extrusion molding process, the toughness and ductility of the hollow plate can be controlled by adjusting the parameters of the extruder and the design of the mold.
3. The effect of polypropylene ratio on the chemical resistance and heat resistance of hollow panels
The proportion of polypropylene also has a certain impact on the chemical resistance and heat resistance of hollow boards. The higher the proportion of polypropylene, the better the chemical and heat resistance of the hollow board. Therefore, when selecting the proportion of polypropylene, it is necessary to determine the proportion of polypropylene based on the application environment and requirements of the hollow board.
4、 Conclusion
It is very important to choose the correct proportion of polypropylene in the hollow plate extrusion machine. The proportion of polypropylene directly affects the performance and quality of hollow panels. When selecting the proportion of polypropylene, it is necessary to determine the proportion of polypropylene based on the actual application needs of hollow boards. Meanwhile, during the extrusion molding process, the performance and quality of the hollow plate can be controlled by adjusting the parameters of the extruder and the design of the mold.
Author：admin