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FEVE

The fluorocarbon coating developed by our company is a new type of pre-coated sheet material thermosetting coating with polytetrafluoroethylene from Daikin of Japan as the main film-forming substance.lt far exceeds other film-forming substances in terms of weather resistance, hardness, stain resistance and acid and alkali resistance in the coating, and is the king of modern outdoor building decoration materials. The outstanding performance of FEVE fluorocarbon coatings is attributed to the special chemical structure of this product, Due to the strong bond energy of the carbon-fluorine bond (485kJ/mol), only a very smal proportion of photons (ultraviolet wavelengths ≤220nm) in sunlight can break the C-F bond. sunlight has almost no effect on fluoropolymers,so fluoropolymers have extremely high weather resistance.

COATING PERFORMANCE TESTING INDICATORS

ITEMSPECIFIC OF INSPECTIONREMARK

Film Appearance

smooth, no bubbles, no crater on surfaceby visual
Finenessglossy: ≤10μm; matt: 20~25μmfineness gauge
Viscosity110-130‘’/25°CFD4#viscometer
Wet Filmwhite: 1.2-1.4 other: 0.9-1.3100ml weight cup
Solid Contentwhite: 60±5%; silver: 50±3%; other: 53±3%105°C×3Hr 
GlossMax glossy:80°:matt:depend on customer requirement)60°gloss meter
Adhesion1mm×1mm×100/100cross-hatch test
Hardness>HMitsubishi pen
Impact1/2×1000g×50cm, no crack impact tester
T-bendtopcoat≤2TT-bending machine
Solvent Resistance≥100 (kilogram force)MEK
Acid And Alkali Resistance

48hours, no color change, no bubbles, no peels

5%HCL, 5%NAOH
Boiling Resistance99±1°C 2hour, no bubbles, no peelsthermostatic water bath
Salt Spray Resistance35°C 5%NACL×4000Hr, no bubbles, no peelssalt fog test cabinet
Weather Resistance4000Hr, no bubbles, no peels, no cracksQUV tester
Anti-graffitioil pen leaves no marks/

FEVE COATING PROCESS


· Substrate:Pre-treated Substrate
· Thinner:Matching Thinner
· Film thickness:28±2μm


PROCESS FLOW DIAGRAM


1.TWO-COAT AND TWO-STOVE

  • Pre-treatment

    1

  • Drying

    2

  • FEVE primer paint special for roller coil(10μm)

    3

  • Drying(209-216℃x60-70)

    4

  • Roller FEVE finish coat paint(film thickness18-20μm)

    5

  • Drying(224-241℃x70-90)

    6

  • Inspection

    7

  • Winding

    8