Why is PVC Replacing all Other Materialsin Door & Window Systems?
The benefits of PVC are:
Excellent aesthetic look.
Freedom from painting.
Air and noise insulation.
Ability of absolute water tightness maintenance.
Recyclable (Replace crossed Test With: (Environment Friendly).
Consumes less primary energy in its production than any other Polymer Material.
Relatively Smaller Carbon Footprint compared to Aluminium and Wood.
Superior Cost to Performance Ratio.
The exposure of uPVC window to sunlight at 250 — 300 nm causes photo oxidative degradation which results in the breakage of polymer chains in the PVC matrix, deterioration of mechanical properties, discoloration and an unpredictable loss of shine.
There Are Several Ways To Avoid Uv Degradation In Pvc By Using Stabilizers, Absorbers And Blockers Pigments Such As Titanium Dioxide Are Very Effective In Reflecting Sunlight Rays When Used In Sizeable Quantities.
Addition of UV light absorbers, excited state quenchers, hindered amine light stabilizers, radical scavengers and antioxidants are convenient solutions In practice.
Impact strength and dimensional stability are two most important characteristics required for a high quality window profile as it has to face severe climatic conditions in freezing to high temperature environments.
Addition of precise quantities of acrylic grade impact modifiers in PVC compound helps retaining the impact strength and dimensional stability of the profile for prolonged use and exposure to UV.