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Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

2025 perguntas
Q
Pressure resistance test failure of low density polyethylene pipes
A
Pressure test failure is caused by insufficient wall thickness, material degradation, or internal defects; it needs to be systematically solved from process and material quality.
Processing Machinery pressure resistance testpipe wall thicknessmaterial degradationcrystallinityplasticizing quality
Q
Large current fluctuation of low density polyethylene extruder
A
Current fluctuation is caused by large plasticizing resistance or equipment problems; it needs to be solved from temperature control, raw material purity, and equipment maintenance.
Processing Machinery current fluctuationscrew torqueplasticizing temperatureraw material impuritiesfilter screen clogging
Q
Poor plasticization caused by screw wear of low density polyethylene extruder
A
Screw wear causes decreased plasticizing efficiency; it needs to be solved by selecting wear-resistant materials and regular maintenance.
Processing Machinery screw wearpoor plasticizationwear-resistant materialscrew clearancescrew rotation speed
Q
Large barrel temperature fluctuation during low density polyethylene low density polyethylene processing
Q
Wide temperature window of low density polyethylene PE raw material causing process parameter optimization difficulty
A
PE temperature window optimization needs to be advanced from two aspects: systematic experiments and experience accumulation.
Processing Machinery temperature optimizationPE gradeDOEprocess parameterstemperature database
Q
Frequent screen change/short filter screen life of low density polyethylene extruder
Q
Low density polyethylene extruder screw design mismatch
A
Screw design needs to match material characteristics and product requirements; custom dedicated screws when necessary.
Processing Machinery screw designcompression ratioL/D ratiomixing elementsscrew matching
Q
Rough inner wall of low density polyethylene extruded products
A
Rough inner wall is caused by low mandrel temperature or poor surface condition; it needs to be solved from temperature control and mold maintenance.
Processing Machinery rough inner wallmandrel temperaturemandrel polishingmelt temperatureplasticizing quality
Q
Degradation discoloration of low density polyethylene extruded products
Q
Impurities mixed into low density polyethylene raw material causing product defects
A
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