从India供应商批量进口Pu Z/C Anti Corrosive Primer

Description Two-component air-drying polyurethane based primer containing zinc phosphate as anti corrosive pigment. Recommended Use :- It is recommended as a primer for MS surface in OEM applications as well as in Process industries like fertilizer plants, Refineries, Petrochemical industries for protection of steel pipelines and structural from corrosion. Physical Data :- COLOUR :- Yellow FINISH :- Matt SOLIDS BY VOLUME :- 40 �± 3% THEORETICAL SPREADING RATE :- 13.33 sq.mt / lit at recommended DFT of 30 �µ FLASH POINT :- Base : Above 23�° C Hardener : Above 30�° C DRYING CHARACTERISTICS (At 30�° C and 65% Relative humidity) :- SURFACE DRY : 30 minutes HARD DRY : Overnight FULL CURE : 7 Days SHELF LIFE :- BASE : 6months HARDENER : 6 months Surface Preparation Abrasive blasting to Sa 21/2 Swedish Standards is the best method of surface preparation. In case blasting is not possible, then the surface of steel should be manually cleaned with brass wire brush, coarse emery paper, scraper, etc to remove rust, dust, loose old coating, oil, grease, and other foreign contaminants. It is preferable to give a solvent wipe after surface preparation. The surface should be absolutely dry, moisture and oil free before primer application or Phosphated components by 7-tank pretreatment process of surface preparation. Application Data MIXING RATIO :- Base : Hardener (As per our recommendation) APPLICATION :- By Brush / By Conventional Spray THINNER :- Type 290 POT LIFE :- 3 hours min at 30�° C RECOMMENDED DFT :- 30-40 �µ. OVERCOATING INTERVAL :- MIN : 8 hours MAX :24 hours (if it exceeds, the surface should be roughened by emery scuffing grade 320) COMPATIBILITY :- Can be top coated with Epoxy, Polyurethane, Chlorinated rubber and Alkyd finish coatings. Application Method Stir the Base part thoroughly. Mix the base and hardener as per our recommended ratio, by volume. Stir the mix gently to attain homogeneity. Add Thinner Type 290 into the mix, if required, depending on application method, and stir gently for few minutes. Allow the mixture to stand still (maturation) for about 10-15 minutes to initiate the reaction. Strain the paint through Nylon filter cloth of 200 mesh size and apply uniformly over the surface. All equipments used for above should be properly clean. Application :- By Brush / By Conventional Spray / By Airless Spray Generally no thinner is required for Brush application, however under adverse environmental conditions about 5% of thinner, by volume, can be added. Apply evenly in crossed manner and ensuring the uniform application. Use quality brushes for paint application. For Conventional Spray application :- Thinner : Type 290 Addition : 10-15% Nozzle Orifice : 1.2 -1.4 mm Nozzle Pressure : 40-70 p.s.i. For Airless Spray application :- Thinner : Type 290 Addition : Max 5% Nozzle Orifice : 0.28- 0.37 mm Nozzle Pressure : 1400-1800 p.s.i.