The construction of epoxy coal asphalt coating pay attention to the main points.

Epoxy coal asphalt paint is divided into epoxy coal asphalt primer and finish paint. Epoxy resin and coal asphalt are used as the main film-forming materials, and added a variety of rust-proof pigments, insulation fillers, tougheners and leveling agents, thinners, anti-sink agents, etc. , component B is a modified amine curing agent or curing agent as the main material, and added pigments and fillers.
scope of application
mainly used for oil, natural gas, water supply and heating of underground or underwater steel pipes outside the wall anti-corrosion

. It is also suitable for all types of steel structures, docks, ships, sluices, gas tanks, refinery equipment and concrete. Waterproof and leak-proof concrete structures, such as pipes, sewage tanks, roof waterproofing, toilets, basements, etc.
features
. 1. The product is a high-performance anti-corrosion coating, the coating smooth, dense, hard, strong adhesion, salt and alkali resistance, sea water resistance, soil microbial corrosion and resistance to plant root penetration. The combined use of coatings and fiberglass cloths enhances the mechanical properties of the corrosion-resistant layer.
2. Temperature coating, natural curing, simple structure, manual or mechanical structure, especially suitable for field use.
coating construction
. 1. After the pipe surface treatment is qualified, the primer should be applied as soon as possible. When the air humidity is too high, primer must be applied immediately.
2. Primer should be evenly applied, no leakage, no bubbles, no clogging, dry film thickness should not be less than 25 m.
construction attention point
(1) steel surface welds must be angular, smooth, no welds, no burrs.
(2) when applying thick paint, it is best not to flow. In general, thinners do not have to be added during preparation. However, if the ambient temperature is too low and the viscosity is too high, a thinner of 1% to 5% can be added and a curing agent should be added appropriately.
(3) should pay attention to changes in weather and temperature during construction. Not suitable for construction in environments with rain, fog, snow or relative humidity greater than 80%;
(4) glass cloth thickness preferably 0.1mm or 0.12mm, latitude and longitude density of 12 x 10 pieces / cm2 or 12 x 12 pieces / cm2. Degreased alkali-free or medium-base glass cloth should be dry and can be used later;
(5) repair method: repair anti-corrosion layer and pipe body anti-corrosion layer of the hook is not less than 100mm, the surface treatment should reach St3, wipe clean, no dirt;
(6) gap repair method: first remove the damaged anti-corrosion layer, if the grass is not exposed, then only need the middle coating, and in the glass mesh paint can be filled;
(7) appearance inspection: the painted pipe must be checked one by one, the anti-corrosion coating must be smooth, wrinkle-free and air. Pinhole check: Can be detected with an electric spark leak detector. Intermediate for 2000V, enhanced for 3000V, special enhanced for 5000V. On average, 45 square meters does not exceed 1 spark, which is eligible. If this fails, the pinholes must be repainted.
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