A:The temperature of the plastic extruder significantly affects the plasticizer effect. The temperature is too low, the plasticizer is difficult to disperse evenly, the plasticization is not sufficient, and the flexibility of the product is poor. When the temperature is moderate, the plasticizer can fully play its role, reduce the melt viscosity and improve the processing performance of plastics. Different plasticizers are affected by temperature differently. For example, phthalates have a good effect at medium temperature, aliphatic dibasic acid esters are volatile at high temperature and require low temperature, and polyesters need high temperature to promote dispersion due to their large molecular weight.
A:The principle of co-extrusion technology is to combine two or more different plastics using multiple extruders through a multi-channel composite die head to produce a composite film with multi-layer structure, and cooled by a casting roll. In the co-extrusion process, different plastic materials are plasticized separately in the extruder and are compounded with each other through the composite die head in an extrusion process to form a composite film with a multi-layer structure. This multi-layer structure can make the product have the excellent characteristics of different materials, and can complement each other in characteristics, so that the product can get the performance and appearance of special requirements.
A:The methods to improve the output of the extruder through the process parameter setting are: moderately increase the screw speed, optimize the heating temperature of each section to enhance the plastic fluidity, adjust the appropriate screw compression ratio, control the head pressure, accelerate the cooling speed, improve the feeding method, and ensure uniform and continuous, while taking into account product quality and equipment performance.
The principle of oxygenation is to use Roots blower to press air into the gas pipeline, send it into nanotubes, and disperse it into the water in the form of microbubbles. The microbubbles float from the bottom to the top, so that oxygen is fully dissolved in the water. At the same time, it can also cause the rotation and up and down flow of the water flow, so that the oxygen-rich water in the upper layer of the pond is brought to the bottom layer, so as to achieve uniform oxygenation of the pool water.
A:Vacuum discharge of twin-screw extruder is an important link. By vacuuming, the gas and volatiles in the material can be removed. This helps to improve product quality and reduce bubbles and blemishes. The vacuum system can optimize the extrusion process, make the material more dense and uniform, and is widely used in the production of plastics, rubber and other industries.
A:Plastic central feeding system plays a prominent role. It centrally stores and manages plastic raw materials, automatically feeds them accurately, and ensures consistent product quality. It can dry raw materials, optimize treatment, save space, and handle dust. The system saves energy and reduces consumption, improves production efficiency, reduces manual operation, and makes plastic processing more intelligent and efficient.
