Material Analysis
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Unsatisfactory toughening effect of modified styrene-butadiene transparent resin (K resin)
Problem Phenomenon
The toughening effect of modified styrene-butadiene transparent resin (K resin) is unsatisfactory, and the impact strength improvement is lower than the expected target
Cause Analysis
Insufficient toughening agent addition or uneven dispersion
Poor compatibility between toughening agent and matrix, weak interfacial bonding
Improper processing temperature (deviating from 200-240°C), toughening agent degradation or poor dispersion
Insufficient mixing, toughening agent aggregation
Toughening agent particle size mismatch
Solution
Increase toughening agent addition to a reasonable proportion
Select toughening agents with good compatibility with styrene-butadiene transparent resin (K resin)
Reasonably set processing temperature according to the 200-240°C range
Strengthen mixing to ensure uniform dispersion
Select toughening agents with appropriate particle size
Key Takeaway
Toughening effect needs to start from addition amount, compatibility, and dispersion
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