Epoxy floor paint on the surface of common defects

Epoxy floor paint coating defects often appear the following:

color: color uneven between batches, uneven thickness, coating and coating time difference is big, easy to form the color difference.

pattern: why are similar with tinea, but due to some difference on the flow property, construction method form different shapes.

floating color: color is by density difference big, solubility difference big pigment mixing the paint, easy to produce the lower level, different color pigment dispersion dose and poor flowing property tend to produce this kind of phenomenon.

bleeding: the underlying organic pigments containing solvent resistance is poor, quilt cover paint solvents dissolve and infiltration.

shrinkage cavity: coating and the substrate surface tension differ big surface tension, coating has poor liquidity, or flow flat, substrate surface with oil or water, paint removing too much foam agent causing shrinkage cavity.

spotted: paint pigment dispersion in uneven, color paste mix when insufficient, dose not scattered, poor solubility of thinners easily spotted phenomenon.

color: incorrect curing agent, pigment paste not uniform grinding, pigment is not correct.

show: choose the poor paint covering power, easy settlement of pigment is not stir before use or insufficient mixing, spray coating is too thin and too thin, bottom paint color contrast is too big, easy to cause the grinning defects. The bottom of the base:

to bite bite is upper spray coating, coating in the solvent to the underlying severe swelling of wrinkling and out of the phenomenon. Is mainly due to the bottom without dry besmear next, the underlying curing dose is insufficient, surface coating a coating is too thick, these factors will cause the phenomenon of bit bottom.

light: resin content is too low and the fineness degree of the coating is unqualified, solvent, the bottom is too rough, poor environmental conditions. Uneven:

sticky mixture of local not bad curing, curing agent or ingredients than disorders, low environmental temperature is completely cured.

white: work environment humidity is too high, solvent evaporation is too fast, the coated body surface temperature too low or the environment temperature is too low, moisture in the material or bottom paint factors such as easy to cause pale.

drawing: coating construction viscosity is too large, atomization is bad, poor thinners dissolved force, high solids, curing agent to incorrect too fast is easy to form wiredrawing phenomenon.

craze: low resin content, filler dispersion local stress concentration from uneven, construction method is wrong. :

particles coating fineness is unqualified, dust, the working environment there are inadequate packing before coating the rare mixing, the coating not deal with or not clean, these cause coating particle cloud

grain: mainly were part of water such as resin, curing agent, filler, pigment mixed with water, the impact of environmental water.

scales: same reason and orange peel, poor flowing property mainly spraying is easy to cause this kind of phenomenon. Mark:

process illiquid, viscosity of age construction easy to leave traces.

peeling: surface treatment, the substrate surface is too smooth, coating apart too long don't again to surface treatment of painting.

the oil: improper curing agent type selection, high boiling point solvents or a soft agent and joined the proportion is not correct.

blister, blister is in the process of the coating is dry, stranded in the coating reacts gas or gas or internal gas produced by the solvent evaporation forced one of the marks left by the film and breakthrough for the pinhole, no breakthrough for bubbles. Solvent evaporation slower, rapid surface drying, paint viscosity is too big, curing dose too much too fierce, mixing, besmear to brush tool movement too fast is one of the reasons for the blister.

orange peel, solvent coating solvents in volatile solvent, porous surface evenly absorbed by capillary action in pore, uneven thickness of coating, the huge difference between the reaction rate, coating material viscosity is too large, improper construction method, the uneven coating itself, high temperature or air velocity of fast construction site environment, are likely to cause the orange peel phenomenon.

so in epoxy floor paint when construction to the construction site observation, more attention to the change of environmental conditions, timely deployment of the appropriate viscosity, adopt effective construction methods according to different coating, try to avoid defects.