Double screw extrusion method being suitable for extruding modified polyphenylene oxide alloy products
A technology of twin-screw extrusion and polyphenylene ether, which is applied in the field of twin-screw extruders, can solve problems such as failure to meet customer needs, affect material product performance, and low product performance, and achieve reasonable structure, flow performance and processing performance. Consistent, high-performance results
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[0016] A twin-screw extrusion method suitable for the extrusion of modified polyphenylene ether alloy products. The screw is divided into three sections A, B, and C along the material conveying direction in the form of 1, 2, and 3 shearing and kneading block combinations. The interior of the twin-screw extruder is divided into A zone, B zone and C zone; A zone is the zone where various materials are initially melted; B zone is the zone where various materials are melted again to reach a semi-molten state, and preliminary kneading is carried out at the same time area; area C is the area where the flame retardant and various materials are kneaded and mixed, and the various materials are evenly distributed; the front of area A is the feeding area, and the rear of area C is the vacuum area. Between areas B and between areas B and C are pressure relief, delivery, and pressurization areas.
[0017] The shearing and kneading block combinations of the screw A section are 45° kneading ...
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