Problem & Solution

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 yellowingprocessing temperatureresidence timeheat stabilizerPVC 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 yellowingprocessing temperatureresidence timeheat stabilizerPVC 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 channelsmold temperaturecooling timewater channel blockageberyllium 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 degreecatalyst dosagemold temperaturecuring timepost-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 orientationglass fiber floatinggate sizemelt temperatureglass 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 degreecatalyst dosagemold temperaturecuring timepost-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 amountmaterial flowabilityweighing accuracyhopper bridgingmaterial 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 pressurepressure

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 errortemperature

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 fluctuationtemperature

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