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The functions of each raw material when extrude uPVC profiles

uPVC Profile


The functions of each raw material when extrude uPVC profiles 

 

Filler Raw Materials


TypeEffect
Calcium Carbonategloss, stiffness
Aluminum hydroxidefire rating
Dolomite, Talcumgloss, stiffness
Carbon blackweathering
Additional Additives
Type

Effect

Antioxidantsstabilize PVC against degradation
UV-stabilizersadditional protection against sunlight
Optical brightenerscompensates absorption of blue light by the polymer
Flame retardantsrarely used, as PVC is flame retardant itself



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