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pinhole |
① coating viscosity too high, stirring time is too long.
② thick coating, solvent evaporation difficult.
③ not supporting the use of curing agents or curing dose too much, at the lack of time.
④ thinner is not supporting, or thinner volatile too fast.
⑤ surface was coated with oil pollution, water.
⑥ of the ambient temperature too high, or too much humidity.
⑦ air compressor in the oil-water separation enough.
⑧ spraying air pressure, small-calibre, spraying distance.
⑨ Road before the coating is not completely dry, dry coating, after the fast. |
① coating viscosity of the deployment of appropriate and placed a period of time after use.
② a thick coating can not, can not exceed 30 um.
③ supporting the use of curing agent, strictly according to weight ratio. High-temperature drying, be sure to let the volatile solvents are full time.
④ supporting the use of thinner.
⑤ clean surface treatment after construction.
⑥ appropriate increase of moisture, the water slowly.
⑦ regularly ranked oil, overhaul separator.
⑧ adjust the air pressure, normally 0.6 Mpa, master spraying distance.
⑨ repeatedly spraying, coating between the drying time to fully. |
