Micava 476 High Crosslinked Polymer Flake Reinforced Composite

Micava 476 High Crosslinked Polymer Flake Reinforced Composite is solvent free Ultra 3.6 performance epoxy phenolic flake reinforced composites. Micava 476 can form a highly crosslinked three-dimensional network structure, that has strong chemical resistance, and high temperature resistance, which exceeding the performance of epoxy. Micava 476 can be used on ferrous, nonferrous metals, and concrete. Micava 476 has excellent corrosion resistance to hydrochloric acid, halogenated hydrocarbons, and ethanol. Micava 476 has the properties of high adhesion, anti-permeability, and effectively, which can apply to prevent the corrosive medium on the substrate. It is suitable for heavy anti-corrosion applications.


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Applications:

  • Protect and repair chemical tanks and pipeline that used for storage high temperature and strong corrosive chemicals
  • Forced to cure in the strong corrosive environment

Technical Data:
Operating temperature: 232℃ (Dry) 177℃ (Wet)
Hardness shore D (ASTM D-2240): 90
Tensile strength (ASTM D-638): 360 kg/ cm²
Compressive strength (ASTM D-695): 1100kg/ cm²
Adhesive Strength (ASTM D1002): 200 kg/ cm²

Chemical Resistance Data:
98% Sulfuric acid (55℃) : E
30% Nitric acid (Normal temperature) : G
Ethanol (Normal temperature) : E
40% Sodium hydroxide : E
30% Acetic acid (Normal temperature) : G (Forced to cure)
37% Hydrochloric acid (55℃) : G
75% Phosphoric acid (Normal temperature) : E (Forced to cure)
Seawater : E
Hydrofluoric acid : NR
Chloroform : E (Forced to cure)
*Notes: Samples cured 7 days before the test, the test time is 40 days at normal temperature and 55 ℃
E = Excellent (Can be long-term immersed)
G = Good (Can be occasionally sprinkled, but need to remove)
NR = Not Recommend (Cannot be adhered to, material will be damaged)

Application Instructions:

  • Surface Treatment:
    Sandblasting the steel surface with chlorine-free abrasive. For external application, the surface should reach SSPC SP-10 standard, close to the white metal treatment standard. After sandblasting the surface, repair surface as soon as possible to prevent surface oxidation, then repair the damaged area properly.
  • Mixed:
    Resin :hardener mixed rate is 3:1 by weight.
  • Dilution:
    Do not dilute.
  • Application tools:
    Use a plastic spatula, plaster knife, or brush. Scratch with a scraper along the same direction. During the scratch process, do the best to ensure the material’s density and flatness.
  • Application temperature:
    Material temperature: Keep at 55-95℉ (13-35℃)
    Substrate temperature: Keep at 45-105℉(7-40℃)
    The temperature difference between the substrate and the coating must not exceed 10℉(5℃)
  • Re-coating/curing time:
    Recoating in the time when material were still soft, within two hours, at 77ºF (25ºC). If the recoating time has been exceeded, polish the surface with sandpaper, grinding, or blasting. Before immersion application, fully cured in 36 hours at 25 ºC. When heating to force curing, the best performance requires 1 hour at 93 ºC, or 12 hours at 49 ºC.
  • Cleaning:
    Wash with methyl ethyl ketone or similar products.