Processing Machinery
6 visualizações
Black Speck Impurities in PC Products
Fenómeno do problema
Black specks or carbonized matter appear in transparent PC products.
Análise das causas
The material stays at high temperature in the barrel for too long and carbonizes, or carbon deposits on the barrel wall fall off; impurities in the raw material.
Solução
Reduce the processing temperature and shorten the residence time; purge regularly; use clean raw materials and filtration.
Conclusão principal
PC black specks are an indicator light of degradation or contamination.
Isto foi útil?
0 pessoas acharam isto útil
Obrigado pelo seu comentário!