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    Home > Coatings News > Paints and Coatings Market > Spraying FAQ Treatment - "Bad Hardness"

    Spraying FAQ Treatment - "Bad Hardness"

    • Last Update: 2020-11-07
    • Source: Internet
    • Author: User
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    In the spraying operation, the paint film drying did not cure in the specified time, hand touch paint film has the feeling of wet re-moisture, resulting in the overall hardness of the paint film is low.
    not reach the required hardness or there is a dry phenomenon in the watch, polishing there are prints, wipe with a towel there are traces.
    hardness - cause:
    1, did not choose the appropriate curing agent and thinner by temperature

    .
    2, added a poor quality thinner.
    3, improper ratio of deployment, coating is too thick.
    4, rough grinding.
    5, did not do closed primer,
    cylinder
    substrate absorbs a large number of solvents.
    hardness - prevention:
    1, according to the temperature of the correct choice of the right curing agent and thinner.
    2, the substrate needs to be thoroughly dried and polished.
    3, color paint layer should not be sprayed too thick.
    4, the use of 2K primer for closed isolation treatment.
    5, all 2K series paint, after deployment, static storage for about 5 minutes before construction.
    hardness - solution:
    the coating is thoroughly polished and re-sprayed correctly.
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