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إجابات عملية على التحديات الشائعة في مواد البلاستيك
تصفح المقالات →
بحث
2025
سؤال
Q
PVC degradation (HCl release)
A
The essence of degradation yellowing is chain scission and chemical changes of polymer molecular chains under high temperature and high shear conditions. The core of the solution is "three controls": control processing temperature within the material recommended range, control residence time to a...
Processing Machinery
degradation yellowing
processing temperature
residence time
heat stabilizer
PVC dehydrochlorination
Q
Degradation yellowing
A
The essence of degradation yellowing is chain scission and chemical changes of polymer molecular chains under high temperature and high shear conditions. The core of the solution is "three controls": control processing temperature within the material recommended range, control residence time to a...
Processing Machinery
degradation yellowing
processing temperature
residence time
heat stabilizer
PVC dehydrochlorination
Q
Hydraulic oil temperature too high
A
This problem is a typical manifestation of hydraulic oil temperature too high in compression molding; the core of the solution lies in proper preheating of the material and assurance of flowability, as well as precise matching of mold temperature and molding pressure. It is recommended to adjust ...
Processing Machinery
cooling water channels
mold temperature
cooling time
water channel blockage
beryllium copper insert
Q
High product water absorption
A
This problem is a typical manifestation of high product water absorption in compression molding; the core of the solution lies in proper preheating of the material and assurance of flowability, as well as precise matching of mold temperature and molding pressure. It is recommended to adjust coord...
Processing Machinery
curing degree
catalyst dosage
mold temperature
curing time
post-curing
Q
Prepreg resin content deviation
A
This problem is a typical manifestation of prepreg resin content deviation in compression molding; the core of the solution lies in proper preheating of the material and assurance of flowability, as well as precise matching of mold temperature and molding pressure. It is recommended to adjust coo...
Processing Machinery
fiber orientation
glass fiber floating
gate size
melt temperature
glass fiber content
Q
Uneven product density
A
This problem is a typical manifestation of uneven product density in compression molding; the core of the solution lies in proper preheating of the material and assurance of flowability, as well as precise matching of mold temperature and molding pressure. It is recommended to adjust coordinately...
Processing Machinery
curing degree
catalyst dosage
mold temperature
curing time
post-curing
Q
Inaccurate feeding amount
A
This problem is a typical manifestation of inaccurate feeding amount in compression molding; the core of the solution lies in proper preheating of the material and assurance of flowability, as well as precise matching of mold temperature and molding pressure. It is recommended to adjust coordinat...
Processing Machinery
feeding amount
material flowability
weighing accuracy
hopper bridging
material distribution
Q
Insufficient press pressure
A
This problem is a typical manifestation of insufficient press pressure in compression molding; the core of the solution lies in proper preheating of the material and assurance of flowability, as well as precise matching of mold temperature and molding pressure. It is recommended to adjust coordin...
Processing Machinery
insufficient press pressure
pressure
Q
Catalyst ratio error
A
This problem is a typical manifestation of catalyst ratio error in compression molding; the core of the solution lies in proper preheating of the material and assurance of flowability, as well as precise matching of mold temperature and molding pressure. It is recommended to adjust coordinately f...
Processing Machinery
catalyst ratio error
temperature
Q
Pipeline Temperature Fluctuation
A
This problem is a typical manifestation of pipeline temperature fluctuation in the RIM process; the core of the solution lies in ensuring the precise ratio and full mixing of the two components, while controlling the reaction temperature and curing conditions within the optimal window. It is reco...
Processing Machinery
pipeline temperature fluctuation
temperature
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2239
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315
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141
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1343
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382
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