(4) Fisheye◇ There is static on the mold surface, the release agent is not dry, and the release agent is not selected properly.◇ The gel coat is too thin and the temperature is too low.◇ The gel coat is contaminated by water, oil or grease.◇ Dirty…

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(5) Sagging◇ The thixotropic index of the gel coat is low, and the gel time is too long.◇ Excessive spraying of gel coat, too thick facade, wrong nozzle direction or small diameter, and excessive pressure.◇ The mold release agent applied on the sur…

(6) Trachoma/microporeSand holes and micropores are mainly the air brought in during the production and construction of the gel coat and the remaining volatile substances and small molecules that did not participate in the curing reaction. They were n…

(7) The product gel coat gloss is not good ◇ Poor finish of the mold, dust on the surface.◇ Low curing agent content, incomplete curing, low curing degree, no post-curing.◇ The ambient temperature is low and the ambient humidity is high.◇ The ge…

(8) Cracks and cracks ◇ Excessive demoulding, the impact of external force on the surface of the gel coat.◇ The gel coat is too thick and the exothermic temperature is high.◇ The impact force inside the structural layer causes spider web-like cr…

Disadvantages: whitishcause① The air has high relative humidity and high temperature, and the solvent evaporates quickly.②Water in the solvent or diluent.③The coating surface is contaminated by moisture.④ The air compressor is malfunctioning, and …

Disadvantages: orange peelcause①The viscosity of the paint is too high, or too much spray at one time.② The solvent evaporates too fast, causing the paint to level out poorly.③ Improper spraying distance, insufficient air compressor pressure, and p…

Disadvantages: saggingcause①The paint has low viscosity, too much spraying at one time, and the coating is too thick.②When spraying, the operating angle and distance are not appropriate, or the moving speed of the spray gun is too slow, resulting in…

Disadvantages: loss of lightcause① The site environment has high humidity, greater than 90%, and water vapor condenses on the surface of the paint film.②The site temperature is too low, the drying is too slow, and the water accumulates on the surfac…

Disadvantages: pinholescause①The viscosity of the paint is too high and the stirring time is too long.②The coating is too thick and the solvent is difficult to volatilize.③The matching curing agent is not used or the curing dosage is too much, and …

Disadvantages: roughcause①The spraying distance is long, the air pressure is large, the spray gun caliber is small, the solvent has volatilized when the coating reaches the surface, and the coating can not level.②The coated surface is not cleaned up…