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    Home > Coatings News > Paints and Coatings Market > Coating standard: coating standard of waterborne PVC tar waterproof coating

    Coating standard: coating standard of waterborne PVC tar waterproof coating

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
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    Core tip: Standard Name: waterborne PVC tar waterproof coating Standard type: standard of the people's Republic of China for building materials waiting for employment Standard No jc634-1996 Issued by National Building Materials Industry Bureau Standard issue date: March 26, 1996 Standard implementation date: September 1, 1996 Standard text 1 Scope This standard specifies the technical requirements, test methods and inspection rules of waterborne PVC tar waterproof coating (hereinafter referred to as waterborne PVC coating) Paint knowledge how about Akzo Nobel Powder Coating Recommended introduction: powder coating is a kind of coating with different form from general coating, which is in powder form It is a new type of coating, because of its own advantages and more and more known by people Let's introduce Akzo Nobel Powder coating Akzo Nobel Powder coating is a cost-effective coating solution, which can be applied to different kinds of products After the treatment of static electricity and fire baking, a tough and durable coating surface will be formed, with the least impact on the environment Since the introduction of this technology, powder coating has been able to continue to maintain the Home of coatings: Standard Name: water borne PVC tar waterproof coating standard type: Standard No jc634-1996 of the people's Republic of China Standard for building materials to be employed standard issuing unit: Standard issuing date: March 26, 1996 standard implementing date: September 1, 1996 standard body 1 Scope This standard specifies the technical requirements, test methods and inspection rules of waterborne PVC tar waterproof coating (hereinafter referred to as waterborne PVC coating) This standard is applicable to water emulsion polyvinyl chloride modified tar waterproof coating 2 The provisions contained in the following standards of the cited standards are the provisions of this standard by reference in this standard At the time of publication of the standard, all versions indicated are valid All standards will be revised All parties using this standard shall explore the possibility of using the latest version of the following standards Gb328-89 test methods for asphalt waterproof roll gb3186-82 sampling of coating products jc498-91 technical requirements for waterborne asphalt based waterproof coating 3.1 appearance quality: the coating shall be uniform in color, be able to mix evenly, be free of caking, fine particles, and be smooth without coarse particles after conjunctive 3.2 the performance of waterborne PVC coating shall meet the requirements of Table 1 Table 14 test method 4.1 the film thickness of test piece is 4.0mm ± 0.2mm 4.2 test conditions the standard test temperature of test room is 20 ± 2 ℃ 4.3 test equipment 4.3.1 thermometer: - 20 ~ 50 ℃, 0 ~ 150 ℃, accuracy 0.5 ℃ 4.3.2 vernier caliper: accuracy 0.05mm 4.3.3 tensile testing machine: tensile speed 0 ~ 100mm / min, 0 ~ 1000N 4.3.4 electric blast drying oven: temperature range 0 ~ 300 ℃, accuracy ± 2 ℃ 4.3.5 refrigerator: the temperature can be adjusted between 0 ℃ and 20 ℃, and the clarity is ± 2 ℃ 4.3.6 asbestos cement board: 80mm × 35mm × 4mm, 24 pieces 4.3.7 impermeable tester: in accordance with gb328.3 4.3.8 analytical balance: sensitivity is 0.001g 4.3.9 electric bending tester: the output ratio of the horizontal bar is 1:10, and the maximum range is 1000N 4.3.10 "8" shaped metal mold, as shown in Figure 1 4.3.11 stainless steel trough plate: 12 pieces, as shown in Figure 2 4.4 the appearance quality shall be in accordance with 6.3.1 of jc408 4.5 extensibility 4.5.1 prepare the test piece according to 6.5.1.2 in jc408 First, weigh 2.0g of the evenly mixed sample, add 2G of water, mix and put it into the middle section of the asbestos board in the trough board, level it, dry it in an oven at 40 ± 2 ℃ for 4h, and then weigh and take 30g of the sample for 2-3 times to level it The last coating shall be dried in an oven for 24 hours, with a film thickness of 4.0mm ± 0.2mm A total of 12 specimens were prepared The extension test without treatment shall be conducted according to 6.5.2.1 of jc408 The range of the tensile machine is 1000N, the tensile speed is 50mm / min, and the extension value is accurate to 0.5mm The elongation of heat treatment shall be in accordance with 6.5.2.2 and 6.5.4.2 of jc408 The elongation of alkali treatment shall be in accordance with 6.5.2.3 and 6.5.4.3 in jc408 The extensibility of UV treatment shall be in accordance with 6.5.2.4 of jc408 4.5.2 calculation of results the extension value of each test piece is calculated according to formula (1): l = l1-l0 (1) Where: L - extension value, mm; l0 - extension ruler pointer reading before the test piece is stretched, mm; L1 - extension ruler pointer reading after the test piece is stretched, mm Take the arithmetic mean value of three test pieces as the test result, accurate to 0.5mm 4.6 nonvolatile content 4.6.1 test step in an oven of 105 ± 2 ℃, dry the glass culture dish with a diameter of about 75mm, cool it to room temperature in the dryer and weigh it, accurate to 0.001g Weigh 2G ± 0.2g of the sample, and evenly disperse the sample in the dish Put the culture dish containing the sample into an oven at 105 ± 2 ℃ for 3 hours, cool it in a desiccator to room temperature and weigh it again, accurate to 0.001g, and conduct parallel test for at least two times 4.6.2 the content of nonvolatile matter calculated according to the result is calculated according to formula (2): m2-m0 NV = --× 100 (2) In the formula m1-m0: NV -- content of nonvolatile matter,%; M0 -- mass of culture dish, G; M1 -- mass of culture and sample before heating, G; M2 -- mass of culture dish and sample after heating, G 4.7 the tenderness shall be in accordance with 6.6.1 and 6.6.3 of jc408 The sample quantity shall be 100g, the test temperature shall be 10 ± 2 ℃, and the diameter of flexible rod shall be 20mm 4.8 the heat resistance shall be carried out according to 6.7 in jc408, the sample quantity is 50g, the test temperature is 80 ± 2 ℃, and the constant temperature is 2H 4.9 the water impermeability shall be in accordance with 6.9.1 of jc408, the sample quantity is 225g, and the metal mesh aperture is 2mm During the test, add a layer of filter paper under the test piece, maintain the pressure of 0.1MPa, 30min, and observe whether it is water permeable 4.10 bond strength 4.10.1 test procedure mortar block shall be prepared in accordance with 6.8.1 of jc408, test piece shall be prepared in accordance with 6.8.2.2 of jc408, coating thickness of test piece shall not be greater than 0.5mm, and five test pieces shall be prepared Place the test piece at 20 ± 2 ℃ for 2h according to 6.8.3 of jc408, place the test piece on the electric bending tester, use the horizontal bar type, adjust the zero point, the no-load automatic stretching speed is 50mm / min, then start the testing machine until the test piece is pulled off, and record the value (P) when the test piece is pulled off, accurate to 1n 4.10.2 the bond strength calculated from the results is calculated according to formula (3): P θ = - × 10 (3) In formula A: θ - bond strength, MPa; P - bond force, N; a - cross section area of "8" shaped test piece, with the value of 5.0 × 104m2 The test results shall be expressed as the arithmetic mean of three test pieces close to the median value to the nearest 0.01 MPa 5 Inspection rule 5.1 sampling shall be carried out in a batch of 5t, if less than 5T, it shall also be carried out in a batch Product sampling shall be carried out in accordance with gb3186, and a total of 2kg samples shall be taken for inspection The storage temperature of the sample is 5 ~ 35 ℃ 5.2 inspection classification product inspection includes delivery inspection and type inspection 5.3 factory inspection items include no treatment extensibility, non-volatile content, low temperature flexibility and heat resistance If all the inspection results meet the specified technical requirements, the batch of products shall be judged as qualified If one of them fails to meet the requirements, it shall be retested It is allowed to take double samples from the same batch of products according to the provisions of 5.1 for re inspection of the unqualified items If it is still unqualified, the batch of products will be judged as unqualified 5.4 type inspection type inspection items are all items in the technical requirements, which shall be carried out every half a year under normal production conditions If the inspection results meet all the technical requirements, it is qualified; otherwise, it is unqualified 6 packaging, marking, transportation and storage 6.2 the facade of the sign packaging barrel shall be painted with obvious signs, including the name of the manufacturer, address, product name, standard number, weight, trademark, production date or production batch number, and validity period 6.3 the storage and transportation storage temperature is 0 ~ 35 ℃, and the effective storage period of the product shall not be less than half a year from the date of production Storage and transportation shall be protected from sun, impact and heat source Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,
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