4237 Epoxy anticorrosive coatingunder insulation layer

Product introduction

4237 is a two-component alkylamine-cured high-build epoxy coating, which forms a coating with excellent mechanical strength aftercuring. it is recommended to be used as anti-corrosion coating under insulation layer.

Recommended applications

This product is generally used for new structures, maintenance and repair of carbon steel surface:corrosion under insulation (CUl), because itcan form a thick film at one time to provide long-term corosion protection, The needle-like functional filer contained in the coating cangreatly enhance the anti-crackingperformance.This product can serve a wide temperature rangeand withstand temperature uo to 275°C

Product information

Appearance：Aluminum gray

Volume solids：67±2%

Proportion：3：1 (volume ratio)

Mixture's pot life：2h (20℃)

Full cure：7d 

Recommended DFT：150 μm (corresponding WFT=162 μm)

Theoretical quantity required (150 μm)：4.5 m² /L

SG：1.4 kg/L

Flash point：Above 35℃

VOCs：306 g/L

Construction conditions

New steel: Sand blasting to Sa2.5 and Medium(G) surfaceroughness(ls0 8503-2).

Steel coated with shop primer: Cleaning for sand blasting orgrinding with an elastic grinding wheel to polish the corrodedparts to St3.

The substrate must have a temperature >3°C above the dewpoint. The environment should be <85%RH.

Use this product only when the painting and curing can becarried out normally at above -10'c. The painting surface mustbe clean and dry.

Painting method

Painting methods：airless spraying/air spraying/brush coating/roller coating

Diluent：103 epoxy diluent

Dilution：0-5% of the coating weight, The actual addition may be adjusted according to the field painting method

Nozzle size：0.43-0.64 mm

Spraying pressure：20-25 Mpa

Film thickness：Non-recommended film thickness may be adopted according to the purpose and area, But this will change the coating rateand affect the drying time and repainting interval, The normal dry film thickness of a single coat is: 75-200μm.

Packing specifications：Component A: 13.5L,Component B: 4.5L

Shelf life：Base material: 36 months;Curing agent: 12 months

Safety measures：Refer to our Material Safety Data Sheet(MSDs)

Disclaimer: The above produtiformatin and data are accumulated acordina to ou experience in experiments and pracicaluse, and can be used as a constuction quideFor painting works that we are not informed, we ony guarantee the qualty ofthe coating itsel,butwe are not responsilble for other problems. We have the righto modify thimanualdue to the continuous improvement of our product.