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Problem & Solution

Practical answers to common plastic material challenges

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11636 questions
Q
CEF creep deformation large
A
Large creep is caused by the elastomer nature; slight crosslinking and rigid fillers are the key
Material Analysis CEFcreepslight crosslinkinghigh molecular weightrigid filler
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Q
CEF antistatic effect poor
A
Poor antistatic effect is caused by insufficient addition; increasing the antistatic agent is the key
Molding Process CEFantistaticantistatic agentsurface resistancemigration rate
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Q
CEF processing temperature fluctuation
Q
CEF tensile strength insufficient
A
Insufficient tensile strength is caused by molecular weight and poor interface; selecting high MW grades is the key
Material Analysis CEFtensile strengthmolecular weightcoupling agentorientation control
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Q
CEF screw slipping
A
Screw slipping is caused by premature melting; reducing the feeding section temperature is the key
Extrusion & Post CEFscrew slippingfeeding section temperaturepremature meltingthread deepening
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Q
CEF size changes greatly with temperature
A
Dimensional temperature sensitivity is caused by the large thermal expansion coefficient; adding fillers and annealing are the key
Extrusion & Post CEFdimensional temperature sensitivitythermal expansion coefficientrigid fillerannealing treatment
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Q
CEF hardness too high
A
High hardness is caused by crystallization and fillers; adjusting cooling and fillers is the key
Material Analysis CEFhardness too highcrystallinityfiller amountplasticizer
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Q
CEF surface tiger stripes
A
Tiger stripes are caused by unstable injection front; multi-stage injection and high mold temperature are the key
Injection Molding CEFtiger stripeinjection speedmulti-stage injectionmold temperature control
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Q
CEF elongation at break low
A
Low elongation at break is caused by low molecular weight and orientation; selecting high MW and reducing orientation are the key
Material Analysis CEFelongation at breakmolecular weightorientation controlcrosslinking degree
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Q
CEF compression set large
A
Large compression set is caused by insufficient crosslinking; increasing the crosslinking degree is the key
Molding Process CEFcompression setcrosslinking degreeelastic recoveryreinforcing filler
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