Ultraviolet absorber KC531

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Ultraviolet absorber KC531
Posting date : Nov 21, 2013
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29-
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Ultraviolet absorber KC531 Basic performance and application KC531 ultraviolet absorber can obviously prevent the coating film from chalking,cracking,foaming and discoloring early or other aging phenomena due to ultraviolet light.It can obviously prolong the coat is,the better the effect will be.It has no any influence on mechanical property of coating film.Used together with yellow stain resesting agent,the effect will be perfect. Technical indexes Appearance:white to light yellow crystalline powder Melting range:120~130℃ Volatile content:≥99% Basic ingredients of powder coating(outdoor white high light powder)(dose:0.3-0.5% inner extruding) Name: Weight Polyester resin(pure) 600 Titanium pigment(rutile) 200 Precipitated barium sulfate 150 TGIC 45 T531 ultraviolet absorber 5 T317 yellow stain resisting agent 10 T88 pure leveling agent 10 T701 luster-enhancing agent 10 T307 yellow stain resistant benzoin 5 Coating manufacturing technology: Extruder:double screw extruder Extruder prezone temperature 115° Extruder postzone tempurature 125° Extruder speed: 30HZ Baking tempurature:180/℃15min or 200℃/10min Basic performance of coating film:film thickness of 60~80 µm Impact strength(positive and negative):50kg/cm passed Pencil hardness: ≥ 2H Glossiness (60°。 angle):≥ 90° Bending( Φ2µm): passed

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