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What roles that different raw materials play in the formulation of uPVC Profile ?

uPVC Profile

       PE wax—external lubrication when extrusion.

       Stearic acid-- internal lubrication when extrusion.

       Calcium Carbonate--- helps decrease surface energy and improves surface finish. In addition, when the particle size is carefully controlled, CaCO3 helps increase both impact strength and flexural modulus (stiffness).

       Stabilizer--- enhances stability of profile and helps to postpone plasticizing. Also this is one important process of making sure 100 percent lead free on uPVC profiles.

       Anti-oxidants--- stabilize PVC against degradation.

       UV-stabilizers---additional protection against sunlight. This is an absolutely necessary material for profiles.


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