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Why is it easy to orange peel and lose light after the construction of summer two-component paint?

Why is it easy to orange peel and lose light after the construction of summer two-component paint?

Classification:
Technical Services
Release time:
2019/05/30
[Abstract]:
In the summer, customers will find the two-component paint sprayed, especially the varnish is easy to orange peel, loses light, the surface is battered, and the definition is poor. Seriously there are bubbles and pinholes. Why is this? 1 Humidity is high, the solvent in the paint is not easily volatilized; the temperature is high, so that the surface of the sprayed coating is quickly dried. This allows the sprayed coating to have a large amount of solvent inside even though the surface is dry. When the internal solvent volatilizes to the surface, the orange peel is light, the light is lost, and there are serious bubbles and pinholes. 2 The reaction of water vapor and curing agent in the air: the humidity in the air is large, causing the sprayed paint to absorb moisture, and the curing agent reacts with the moisture in the air to produce carbon dioxide. When the carbon dioxide generated inside the coating passes through the surface of the surface, Causes orange peel, loss of light, bubbles, pinholes. 3 Humidity assembly causes an invisible water mist to adhere to the substrate. After spraying the paint, the water mist is covered by the paint and does not evaporate. They easily react with the curing agent. 4 The temperature is high, and the paint mist in the air dries quickly. If the spray booth is poorly ventilated or the air flow is improper, the dry paint mist will fall back to the already sprayed coating film, causing the surface to lose light. 5 Some customers use unsuitable curing agents and thinner materials, especially some customers use cheap, fast-dissolving banana water spray, which will intensify the moisture absorption of the coating, dry in the dry surface, causing orange peel and loss of light. Wait. In addition, the coating film is too thin or too thick or uneven, the surface to be coated is rough, the surface to be coated is contaminated before spraying, the paint is too thin, the spray pressure is too high, the viscosity of the paint is too low, and the air is insufficient during drying or Insufficient flash drying is also a common cause of orange peel, loss of light, bubbles, and pinholes. Prevention of these morbidities, mainly from the causes of these pathological conditions: such as strengthening the dehumidification of the spraying environment, ventilation, reducing the temperature of the spray substrate, drying the spray substrate, using the matching curing agent, thinner, fully flashing and so on.
In the summer, customers will find the two-component paint sprayed, especially the varnish is easy to orange peel, loses light, the surface is battered, and the definition is poor. Seriously there are bubbles and pinholes. Why is this?
1 Humidity is high, the solvent in the paint is not easily volatilized; the temperature is high, so that the surface of the sprayed coating is quickly dried. This allows the sprayed coating to have a large amount of solvent inside even though the surface is dry. When the internal solvent volatilizes to the surface, the orange peel is light, the light is lost, and there are serious bubbles and pinholes.
2 The reaction of water vapor and curing agent in the air: the humidity in the air is large, causing the sprayed paint to absorb moisture, and the curing agent reacts with the moisture in the air to produce carbon dioxide. When the carbon dioxide generated inside the coating passes through the surface of the surface, Causes orange peel, loss of light, bubbles, pinholes.
3 Humidity assembly causes an invisible water mist to adhere to the substrate. After spraying the paint, the water mist is covered by the paint and does not evaporate. They easily react with the curing agent.
4 The temperature is high, and the paint mist in the air dries quickly. If the spray booth is poorly ventilated or the air flow is improper, the dry paint mist will fall back to the already sprayed coating film, causing the surface to lose light.
5 Some customers use unsuitable curing agents and thinner materials, especially some customers use cheap, fast-dissolving banana water spray, which will intensify the moisture absorption of the coating, dry in the dry surface, causing orange peel and loss of light. Wait. In addition, the coating film is too thin or too thick or uneven, the surface to be coated is rough, the surface to be coated is contaminated before spraying, the paint is too thin, the spray pressure is too high, the viscosity of the paint is too low, and the air is insufficient during drying or Insufficient flash drying is also a common cause of orange peel, loss of light, bubbles, and pinholes.
Prevention of these morbidities, mainly from the causes of these pathological conditions: such as strengthening the dehumidification of the spraying environment, ventilation, reducing the temperature of the spray substrate, drying the spray substrate, using the matching curing agent, thinner, fully flashing and so on.