Coating standard: JC / T 674-1997 PVC elastic waterproof coating

Core tip: 1 Scope This standard specifies the classification, technical requirements, test methods, inspection rules, marks, packaging, transportation and storage of PVC elastic waterproof coating (hereinafter referred to as PVC waterproof coating) This standard is applicable to thermoplastic and hot-melt PVC elastic waterproof coating prepared with PVC as base material, modified materials and other additives 2 reference standards The following standards contain provisions which are incorporated by reference into this standard At the time of publication, the editions indicated are all valid All standards will be revised All parties using this standard shall discuss the latest version of the following standards Which is the price of Dajin diatom mud Recommended brief introduction: which is the price of Dajin diatom mud? How to buy genuine diatom mud? Guangdong diatom mud agent suggests placing a basin of cold water in the air conditioning room, so that the diatom mud wall can breathe effectively The feature of the breathing wall is obvious When the indoor air is dry, the diatom mud wall will release the absorbed water quickly Put it out to help regulate the indoor dry humidity It is suggested to place a basin of cold water in the air conditioning room, so that the wall of diatom mud can breathe effectively The feature of the wall that can breathe is obvious When the indoor air is relatively dry, the wall of diatom mud will absorb the water Home of coatings: 1 scope this standard specifies the classification, technical requirements, test methods, inspection rules, marks, packaging, transportation and storage of PVC elastic waterproof coating (hereinafter referred to as PVC waterproof coating) This standard is applicable to thermoplastic and hot-melt PVC elastic waterproof coating prepared with PVC as base material, modified materials and other additives 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, the editions indicated are all valid All standards will be revised, and parties using this standard shall explore the possibility of using the latest version of the following standards GB 3186-82 sampling of coating products GB / T 13477-92 test methods for building sealing materials JC / T 408-91 waterborne asphalt based waterproof coating JC / T 500-92 polyurethane waterproof coating 3 Classification 3.1 PVC waterproof coating can be divided into two types according to the construction method: thermoplastic (J type) and hot-melt (G type) 3.2 PVC waterproof coating is divided into 801 and 802 models according to the heat-resistant and low-temperature performance "80" stands for heat resistance temperature of 80 ℃, "1" and "2" stands for low temperature flexibility temperature of "- 10 ℃" and "- 20 ℃" respectively 3.3 product marking 3.3.1 marking method products shall be marked in the following order: name, type, model and standard number 3.3.2 marking example standard number model type PVC elastic waterproof coating 4 technical requirements 4.1 appearance 4.1.1 J type waterproof coating shall be black uniform viscous substance, free of caking and impurities 4.1.2 G-type waterproof coating shall be black block, free of coke slag and other sundries, and free of flowing phenomenon 4.2 physical and mechanical properties the physical and mechanical properties of PVC waterproof coating shall meet the requirements of Table 1 In Table 1, e fracture elongation,%; distance between markings before l0 stretching, mm; distance between markings when l fracture, mm The arithmetic mean value of 5 valid data shall be taken from the test results to the nearest 1% 5.8 the recovery rate shall be tested in accordance with the provisions of 5.7.1 of this standard When the test piece is stretched to the elongation of 100% (L1), it shall be kept for 5min, then the test piece shall be taken down, translated to the glazed brick with talcum powder, parked for 1H under the standard test conditions, and the distance between the two lines (L2) shall be measured with a vernier caliper with an accuracy of 0.02mm Calculate the recovery rate according to formula (2) Where: s recovery rate, distance between markings at 100% elongation of L1, mm; distance between markings after 100% elongation of L2, mm; distance between markings before l0 stretching, mm The arithmetic mean value of 5 test pieces shall be taken as the test result, with the accuracy of 0.1% 5.9 the water impermeability shall be in accordance with JC / T 408 The diameter of copper wire mesh is 0.2mm 5.10 the bond strength shall be carried out according to the provisions of JC / T 408, and the adjustable speed tensile testing machine shall be used for the test, with the tensile speed of 50 mm / min The arithmetic mean value of 5 test pieces shall be taken as the test result, with the accuracy of 0.01 MPa 6 Inspection rule 6.1 the factory inspection items are appearance, heat resistance, low temperature flexibility and fracture elongation without treatment 6.2 type inspection items are all items specified in Chapter 4 of this standard Type inspection shall be carried out in case of one of the following situations: a) trial production of new products or trial production and finalization identification of old products; b) once a year in normal production; c) great changes in raw materials, formula and process of products, which may affect product quality; d) when the technical supervision department puts forward requirements 6.3 20t products of the same type and model shall be taken as a batch for batch and sampling, and if less than 20t, a batch shall be made for delivery inspection According to the quantity specified in GB 3186, the whole barrel (bag) of products shall be randomly selected from the batch for type inspection, and then 2kg of mixed samples shall be taken for physical and mechanical properties inspection according to the provisions of GB 3186 6.4 judgment rule 6.4.1 if the appearance quality does not meet the requirements of Article 4.1, it is deemed as unqualified product 6.4.2 if each test piece of heat resistance, low temperature flexibility and water impermeability meets the requirements according to the single result, the project is qualified If the arithmetic mean value of the remaining test pieces of each group meets the requirements, the item is qualified 6.4.3 in the delivery inspection and type inspection, if there are two or more indicators that do not meet the requirements, the batch of products is unqualified; if there is one that does not meet the requirements, it is allowed to double the sampling in the same batch of samples for retest If it still fails to meet the requirements, the batch of products shall be judged as unqualified 7 Mark, package, transportation and storage 7.1 each product shall be marked with enterprise name, address, product name, mark, production date, net quality, and attached with product certificate 7.2 packing PVC waterproof coating J can be packed in sealed iron barrel, and G can be packed in double-layer plastic bags or other containers 7.3 the product shall be transported as general goods During transportation, it shall be prevented from direct sunlight or rain, from approaching heat source and fire source, from extrusion and collision, and keep the package intact 7.4 the stored products shall be stored in a dry, ventilated and cool warehouse The storage period is one year, which can still be used after passing the inspection 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,