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Problem & Solution

Practical answers to common plastic material challenges

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1343 questions
Q
DSTDP exudation to product surface
A
DSTDP exudation is caused by poor compatibility and excessive addition; reducing amount and improving compatibility are key
Material Analysis DSTDP exudationcompatibilityaddition amountthioester typesurface exudation
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Q
DSTDP poor weather resistance
A
Poor weather resistance is caused by photo-oxidation; UV+HALS+antioxidant triple protection is key
Material Analysis DSTDPweather resistanceUV absorberHALSphoto-oxidation
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Q
Insufficient DSTDP addition amount, poor antioxidant effect
A
As a secondary antioxidant, DSTDP needs to be added in sufficient amount and combined with primary antioxidants
Material Analysis DSTDPaddition amountsecondary antioxidant1010/168 combinationmasterbatch method
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Q
DSTDP product dimensional change during long-term storage
A
Dimensional change is caused by physical aging; annealing treatment and slight crosslinking are the measures to stabilize dimensions
Material Analysis DSTDP dimensional stabilityphysical agingannealingsecondary crystallizationslight crosslinking
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Q
Poor interfacial bonding between DSTDP and filler
A
The elastomer-filler interface requires the dual action of coupling agent and compatibilizer, otherwise the filler plays a negative effect
Material Analysis DSTDP fillerinterfacial bondingcoupling agentcompatibilizerfiller dispersion
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Q
Low Flexural Modulus of CMC
A
Low flexural modulus is caused by material softness and insufficient filler; adding rigid filler is the key
Material Analysis CMCflexural modulusrigid fillernucleating agentcrystallinity
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Q
Hydrolytic Aging of CMC
A
Hydrolytic aging is caused by polar groups being sensitive to water; selecting a low-polarity grade is the key
Material Analysis CMChydrolytic agingpolar groupsanti-hydrolysis stabilizerwaterproof coating
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Q
Unstable Viscosity of CMC Solution Preparation
A
CMC viscosity stability is determined by molecular weight distribution and solution preparation conditions
Material Analysis CMC solution preparationviscosity fluctuationmolecular weight distributionsolution preparation temperaturefull stirring
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Q
Large Smoke in CMC Processing
A
Large smoke is caused by volatilization of volatiles; temperature reduction and exhaust are the key
Material Analysis CMCprocessing smokevolatilesexhaust systemtemperature reduction
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Q
Insufficient Toughness and Brittle Fracture of CMC
A
Insufficient toughness is caused by low molecular weight and coarse crystallization; selecting high MW is the key
Material Analysis CMCinsufficient toughnessmolecular weightcrosslinking controlcrystallization refinement
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