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Problem & Solution

Practical answers to common plastic material challenges

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11636 questions
Q
Large EAA dimensional change with temperature
A
Dimensional temperature sensitivity is caused by large thermal expansion coefficient; adding filler and annealing is key
Extrusion & Post EAAdimensional temperature sensitivitythermal expansion coefficientrigid fillerannealing treatment
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Q
EAA hardness too high
A
High hardness is caused by crystallization and filler; adjusting cooling and filler is key
Material Analysis EAAhigh hardnesscrystallinityfiller amountplasticizer
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Q
EAA surface tiger stripe pattern
A
Tiger stripe pattern is caused by unstable injection front; multi-stage injection and high mold temperature are key
Injection Molding EAAtiger stripe patterninjection speedmulti-stage injectionmold temperature control
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Q
Low EAA elongation at break
A
Low elongation at break is caused by low molecular weight and orientation; selecting high MW and reducing orientation is key
Material Analysis EAAelongation at breakmolecular weightorientation controlcrosslinking degree
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Q
Large EAA compression set
A
Large compression set is caused by insufficient crosslinking; increasing crosslinking degree is key
Molding Process EAAcompression setcrosslinking degreeelastic recoveryreinforcing filler
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Q
EAA surface blooming
A
Blooming is caused by low molecular migration and precipitation; selecting a high molecular weight grade is fundamental
Production & Quality EAAbloominglow molecular migrationhigh molecular weightlubricant precipitation
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Q
EAA surface stress whitening
A
Stress whitening is caused by orientation and internal stress; reducing orientation and annealing are the key
Molding Process EAAstress whiteningorientation stressannealing treatmentstress concentration
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Q
Fast EAA thermal aging
A
Thermal aging is caused by thermal oxidation; improving the antioxidant system is key
Material Analysis EAAthermal agingthermal oxidationantioxidanthigh molecular weight
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Q
Insufficient EAA mixing
A
Insufficient mixing is caused by improper screw design; increasing the mixing section is key
Processing Machinery EAAinsufficient mixingscrew mixing sectionkneading blocksside feeding
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Q
Poor EAA fatigue resistance
A
Poor fatigue resistance is caused by insufficient recovery and fast crack propagation; increasing crosslinking is key
Production & Quality EAAfatigue resistancecrosslinking degreemolecular weightstress concentration
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All Topics 11636 Material Drying 1439 Injection Molding 1506 Molding Process 740 Molds & Tooling 1506 Processing Machinery 2025 Extrusion & Post 2239 Blow Molding 315 Thermoforming 141 Material Analysis 1343 Production & Quality 382
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