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    Standard for chlorosulfonated polyethylene anticorrosive coatings

    发布时间:2019-04-15 浏览:116068次 字号:  

    Standard for chlorosulfonated polyethylene anticorrosive coatings


    HG/T2661-95


    1. Main contents and scope of application


    This standard specifies the technical requirements, test methods, inspection rules, marks, packaging, storage and transportation of Yunnan iron, iron red chlorosulfonated polyethylene primer (two-component) and chlorosulfonated polyethylene finish (two-component).


    This standard is applicable to chlorosulfonated polyethylene micaceous iron, iron red primer (two-component) and finish (two-component) anti-corrosion coatings for steel structures, concrete and other substrates.


    2. Reference standards


    GB / T 1720 determination of adhesion of paint films


    GB / T 1723 determination of viscosity of paints


    GB / T 1724 determination of fineness of paints


    GB / T 1725 determination of solid content of coatings


    GB / T 1726 determination of hiding power of paints


    GB / T 1727 general preparation method of paint film


    GB / T 1728 determination of drying time of paint film and putty film


    GB / T 1731 determination of flexibility of paint films


    GB / T 1732 determination of impact resistance of paint films


    GB / T 1740 determination of damp heat resistance of paint films


    GB / T 1763 test method for chemical reagent resistance of paint films


    GB / T 1764 determination of film thickness


    GB / T 1766 rating method for weather resistance of paint films


    GB / T 1767 determination of weather resistance of paint films


    GB / T 3186 selection of coating products


    GB / T 5208 coatings -- Determination of flash point -- rapid equilibrium method


    GB / T 6753.3 test method for storage stability of coatings


    GB / T 9271 standard test panel for paints and varnishes


    GB 9278 temperature and humidity for conditioning and testing of paint samples


    GB / T 9286 paints and varnishes cross cut test of paint films


    GB / T 9750 packaging marks of coating products


    GB / T 13491 general rules for packaging of coating products


    3. Technical requirements


    The product shall meet the requirements in Table 1, table 2 and table 3.


    Table 1 Primer


    project


    Indicators


    Status in container


    No hard block, uniform after mixing


    Outflow time, s



    eighty


    Fineness, μ m



    eighty-five


    Solid content,%



    thirty


    Color and appearance of paint film


    Paint film leveling


    Drying time, H


    Surface dry ≤


    zero point five


    Drying time, H


    Practical work ≤


    twenty-four


    Adhesion, grade


    Circle drawing method ≤


    two


    Flexibility, mm


    one


    Impact resistance, CM


    fifty


    Salt water resistance, 4D


    No blistering, falling off, rust and slight discoloration are allowed


    Applicable period, H



    eight


    Table 2 finish


    project


    Indicators


    Status in container


    No hard block, uniform after mixing


    Outflow time, s



    sixty


    Fineness, μ m



    fifty-five


    Solid content,%



    twenty-three


    Color and appearance of paint film


    Paint film leveling


    Drying time, H


    Surface dry ≤


    zero point five


    Drying time, H


    Practical work ≤


    twenty-four


    Adhesion, grade


    Circle drawing method ≤


    0


    Flexibility, mm


    one


    Impact resistance, CM


    fifty


    Salt water resistance, 4D


    No blistering, falling off, rust and slight discoloration are allowed


    Damp heat resistance, 7d


    No blistering, falling off, rust and slight discoloration are allowed


    Applicable period, H



    eight


    Table 3 chemical medium resistance of primer and finish composite coating


    project


    index


    30% sulfuric acid aqueous solution, 30d


    No blistering, falling off and rusting


    30% sodium hydroxide aqueous solution, 30d


    3% sodium chloride aqueous solution, 30d


    Note: the total thickness of paint film is (100 ± 10) μ m


    4 test method


    4.1 General conditions of test


    4.1.1 sampling shall be carried out according to GB / T 3186.


    4.1.2 the standard test plate shall comply with the provisions of GB / T 9271.


    4.1.3 paint film shall be prepared according to GB / T 1727.


    4.1.4 the thickness of paint film shall be determined according to GB / T 1764.


    4.1.5 the temperature and humidity of sample condition adjustment and test shall be in accordance with GB 9278.


    4.2 state of coating in container


    Open the container and stir the sample with a mixing knife. If it can be easily stirred evenly, it is "no hard block and uniform after stirring".


    4.3 outflow time


    According to GB / T 1723 method B.


    4.4 fineness


    According to GB / T 1724.


    4.5 solid content


    According to GB / T 1725 method a, the heating time is 2H and the potential temperature is (110 ± 2) ℃.


    4.6 color and appearance of paint film


    Visually inspect and compare with the self prepared color plate for evaluation.


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