Coating technology: Test Method of waterproof coating index

Core tip: the detection methods of waterproof coating indicators used in the process of plant decoration are various The following is a brief introduction 1 Film forming thickness inspection: it is recommended to prick three points every 100 square meters with needle puncture method, measure its height with ruler, take its average value, and the film forming thickness should be greater than 2 mm When puncturing, color pen should be used to mark for repair 2 Inspection of fracture elongation rate: during the waterproof construction, the supervisor can go to the construction site to brush the mixed materials on the flat glass plate (the glass plate should be waxed first) for several times The film thickness is 1.21.5mm After 7 days, 1% of the alkali water is soaked Paint agent, top 10 Chinese wall paint brands Recommended introduction: interior wall paint and exterior wall paint can achieve beautiful, clean and pleasant effects, but the effects in different environments are different, so the color of the paint will be different There are ten brands of Chinese paint, ten brands of global paint, ten brands of Chinese wall paint, and ten brands of Chinese paint, Famous trademark of Chinese paint and coating In private rooms, most of us choose according to our own personality, personal hobbies and living habits The younger generation will choose the interior wall paint with rich colors and bright colors, while the older ones will have some working experience Paint Home News: in the process of plant decoration, the detection methods of using waterproof paint indicators are various The following is a brief introduction 1 Film forming thickness inspection: it is recommended to prick three points every 100 square meters with needle puncture method, measure its height with ruler, take its average value, and the film forming thickness should be greater than 2 mm When puncturing, color pen should be used to mark for repair 2 Inspection of fracture elongation rate: during waterproof construction, the supervisor can go to the construction site to brush the mixed materials on the flat glass several times On board (glass plate should be waxed first), the film thickness is 1.21.5 mm After placing it for 7 days, soak in 1% of alkaline water for 7 days, and then dry it for 24 hours at 50 C soil 2 degree oven Dumbbell type tensile test is required The elongation rate is 80% (no treatment is 200%) 3 Water resistance inspection: paint on the cement block in several times, with a film thickness of 1.21.5mm, placed for 7 days, immersed in 1% alkali water for 7 days, without layering or hollowing, it is qualified 4 Water impermeability inspection: if possible, instrument inspection shall be used The method is to prepare the coating in proportion, brush it on the glass plate several times (wax the glass plate first) with a thickness of 1.5mm, put it in the oven for 7 days, and then put it in the oven at 50 ℃? ℃ for 24 hours, take it out and put it for 3 hours for water impermeability test If the water impermeability is 0.3MPa and there is no leakage for 30 minutes, it is qualified If the conditions are not met, visual inspection can be used to check the waterproof effect The method is to brush the coating on the non-woven fabric 46 times After it dries completely (about 24 hours, the film thickness is 1.21.5 mm, which is made into a slow box shape and hoisted empty, but no dead angle is allowed Then add 1% alkali water into the box If there is no leakage in 24 hours, it is qualified 5 Adhesion inspection: G-type polymer waterproof mortar can be directly formed into "8-shaped mold, and the mold will be out 24 hours later It is suggested to soak in water for 6 days, dry curing at 25 ℃? ℃ for 21 days, and carry out bonding test G-type waterproof mortar, ash: water: glue = 10.110.14g-type waterproof mortar is 2.3mpa, R-type coating is made into sesame paste, the prepared coating is applied to two half "8-shaped mortar blocks, and placed for 7 days for bonding test, R-type ratio (high elastic) powder: glue = 11.4 medium elastic) powder: glue = 10.8-1r is 0.5MPa and greater than or equal to the bonding index 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,