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1、厕浴间聚氨酯涂膜防水层（Polyurethane coating waterproof layer for toilet and bath room）Polyurethane coating waterproof layer for toilet and bath roomThe technical disclosure is applicable to the construction of waterproof and cold work with polyurethane coating on toilets, toilets and other floors.1. material r
2、equirements(1) polyurethane coating waterproof material (double component). The factory certificate should be issued.The component A is made of polyurethane and diisocyanate as raw materials, through polymerization and the reaction products containing isocyanate terminated polyurethaneEster prepolym
3、er, the appearance of light yellow thick, barreled 20kg per barrel.The second component is made of accelerator, curing agent, toughening agent, anti mildew agent, bulking agent and diluent mixing process; the appearance of red, black and white,Yellow and coffee paste, bottled, 40kg per barrel.The co
4、mponent A is stored in a room ventilated dry place, storage period not exceeding 6 months.The B component is stored in the chamber and the storage period is not more than 12 months. Two sets of materials should be kept separately, no mixing in one room; remaining after useMaterials should be tightly
5、 sealed to prevent material failure.Main technical performance:Solid content: 93%The tensile strength is not less than 0.7MpaElongation at break ranged from 300% to 400%Heat resistance of 80 degrees, not flowingLow temperature flexibility: 20 degrees around the 20mm diameter round bar, no crackWater
6、 impermeable: 0.3Nmm2.(2) No. 325 ordinary portland cement is used to prepare cement mortar protective layer.Medium sand: mud content is not greater than 3%.(3) phosphoric acid or benzene sulfonyl chloride: used as retarder.Two lauric acid two butyl tin: used as a coagulant.Ethyl acetate: Rinse gel
7、on handXylene: use dilution and cleaning toolsPolyester nonwoven fabric or glass cloth: Specifications for 60g2. main machines and toolsShould be equipped with an electric mixer (power 0.3 0.5KW, 200500 to min), mixing barrel (volume 10L), paint bucket (3L), plasticMaterial or rubber scraper, rollin
8、g brush, paint brush, spring scale, dry powder fire extinguisher, etc.3. operating conditions(1) the basic surface coating waterproof layer, dust and other debris must be cleaned, the surface residual mortar lumps and protrusions should shovelFlat, clean, light pressure, yin and Yang Kok should put
9、into arc or obtuse angle.(2) the surface coating of the waterproof layer should be kept dry, and to smooth, firm, no hollowing, cracks and other defects from the sand.(3) the floor drain at the leveling layer, the Guan Gen, the outlet and the root (edge) of the sanitary ware should be rounded. The s
10、lope meets the design requirements. The components must be firmly installed and tightly sealed.(4) to highlight the ground pipe root, floor drain, drainage, yin and Yang corner, etc., should first do additional layer wall repair treatment, brush polyurethane bottom adhesiveAfter inspection and compl
11、etion of the hidden works acceptance.(5) all kinds of materials used for waterproof layer, the base treatment agent, xylene and other flammable substances, storage and storage should be far away from the source, construction exercisesFireworks should be strictly prohibited during the process. (6) th
12、e construction of waterproof layer shall not be carried out on rainy days or windy days, and the environmental temperature during winter construction shall be no less than 5 degrees centigrade.4. operation processTechnological process：Clean the surface of the base layer, detail treatment, preparatio
13、n of base rubber, brushing the bottom rubber, brushing the bottom glue (equivalent to cold base oil), adding the additional layer of detailThe first coating second times coating third times coating waterproof layer construction waterproof layer test water protection layer finishing layer constructio
14、n waterproof layerTwo water test to waterproof layer acceptance(1) before the construction of waterproof layer, the dust, debris and so on on the base surface should be removed and cleaned with a clean damp cloth.(2) the basic surface coating waterproof layer, no uneven, loose sand, hollowing, crack
15、ing and other defects. Water content is generally not greater than 9%,The surface of the base uniform white, no watermark.(3) brushing the base rubber is equivalent to cold base oil:1) prepare the base rubber. First, add a polyurethane and B material to toluene, the ratio is 1:1.5:2 (weight ratio),
16、and stir evenly. The amount of preparation should be specificCircumstances should not be too much.2) brushing the base adhesive,Will be prepared by the top of the rubber mixture, with a long roll brush evenly coated at the base surface, brushing amount of 0.15:0.2kgm,Painted after the normal tempera
17、ture season 4h, when the handle is not sticky, you can do the next process.(4) coating waterproof layer construction:1. material preparation:Polyurethane waterproof material is polyurethane nail material, polyurethane, ethyl material and xylene, the ratio is 1:1.5:3 (weight ratio); in the constructi
18、on, coating waterproof materialThe mixture ratio should be measured accurately, and the electric mixer must be used for stirring.2) make additional layers in detail:Prominent floor drain, Guan Gen, water outlet, sanitary ware and so on root (edge), yin and yang angle and so on weak parts, should do
19、before large-area besmear brushsA cloth, two oil waterproof additional layer, after the drying of the rubber table, the fabric will be cut into the same size as the floor drain, pipe root and the same shape, and will be widened around 20cm cloth coverIn the pipe, root and other details, and besmear
20、coating waterproof material, after the normal temperature 4H table dry, and then brush second coating waterproof material, 24h work, you can carry on the big surfaceConstruction of laminated coating waterproof layer.3) coating waterproof layer:The first coating waterproof layer: the already good pol
21、yurethane coating waterproof material, with plastic or rubber scraper evenly coated on the base has been coated with glueLayer surface, dosage of 1.5kgm2, thickness of 1.3 1.5mm, no leakage, brush and bubble and other defects, 24h curing, second coatings can be carried out;Second coating: on the cur
22、ed coating, use the direction perpendicular to the first coating and evenly brush on the surface of coating, the coating amount is slightly less than that of the coatingFirst, the dosage is 1kgm2, thickness of 0.7 1mm, no leakage, brush and bubble and other defects, 24h curing, the first test water,
23、 in case of seepageShould be carried out to repair, leakage, leakage does not occur so far;In addition to the above brushing method, you can use a long roll brush layered, vertical direction of each other four times brushing, each coating amount of 0.6kgm2; such as barParts may also be sprayed, but
24、the thickness and evenness must be well controlled. Details are not easy to spray parts, should be done after the dry brush;4) in the construction of waterproof coating layer, should be in accordance with the standard procedure, organize relevant personnel carry out technology and materials used in
25、construction, complete the construction of waterproof layer, after the water test above 24h, found no water seepage Water Leakage for qualified, then inspection and acceptance of concealed work, pay under construction.(5) the problems encountered in the construction process should be dealt with as f
26、ollows:1) when it is found that the coating viscosity is too large to be brushed easily, a small amount of xylene can be added to dilute it, and the amount added shall be no more than 10% of the total amount of the material.2) when it is found that the coating is cured too fast, it may add a small a
27、mount of phosphoric acid or benzene sulfonyl chloride and other retarders to the construction, and the amount of addition should be no more than that of a nail0.5%.3) when the coating is found to be too slow to cure, a small amount of two lauric acid and two butyl tin can be added as the setting acc
28、elerator, and the amount of addition shall be no more than that of a nail0.3%.4) coating waterproof layer besmear 24h not cured, still have sticky phenomenon, besmear besmear second paint have difficulty, can first besmear a layer of talcum powder, and then fuckWhen the utility model is used, the fe
29、et can not be adhered, and the quality of the coating can not be affected.If it is found that the precipitation of the material, it should be stirred evenly and then with the preparation of a material, otherwise it will affect the quality of coating.5. quality standard(1) guarantee project:1) coatin
30、g waterproof material and non-woven fabric technical performance must comply with the design requirements and the relevant standards, the product should be accompanied by factory certificationWater quality certification, on-site sampling test, unauthorized or re tested unqualified waterproof materia
31、l shall not be used2) polyurethane coating waterproof layer and its details and other practices must comply with the design requirements and construction specifications, and shall not have leakage phenomenon.(2) basic items:1) waterproof polyurethane coating base should be firm, clean, smooth surfac
32、e, yin and yang angle is in a circular arc shape or obtuse, polyurethane adhesive coating should haveUniform, no leakage coating.2) polyurethane base rubber and polyurethane coating additional layer, its brushing method, lap, and head should comply with the provisions, and should be bonded firmly, t
33、ight, joint sealingStrict, no damage, bulging.3) polyurethane coating waterproof layer should be painted evenly, the protection layer and waterproof layer bonding firm, no damage, uneven thickness and other defects.(3) allowable deviation items:The lap width of polyurethane coating waterproof layer
34、is 10cm, and the upper and lower two layers shall be staggered with each other, 30cm.6. finished product protection(1) waterproof polyurethane coating has good coating, protective measures should be taken promptly, before doing a protective layer, not wear spikes in and outIn order to avoid damage t
35、o waterproof layer.(2) highlight the ground pipe, root, floor drain, drain, sanitary ware and so on, the surrounding waterproof layer shall not be damaged, and parts shall not be changed.(3) the floor drain, drain and so on should be kept unblocked. During construction, debris should be prevented fr
36、om falling and the water should be carefully cleaned.(4) polyurethane coating waterproof layer in the construction process, not before curing, not to move around, so as not to destroy the waterproof layer, causing leakage of hidden dangers.(5) polyurethane coating waterproof layer construction proce
37、ss, should pay attention to the protection of the relevant doors, walls and other parts, to prevent pollution of finished products.7., should pay attention to quality problems(1) the hollowing: waterproof layer hollowing generally occurs in between the leveling layer and the waterproof coating layer
38、 and the joint because the moisture content is too large, make the filmHollowing, bubble formation, moisture content should be controlled in the construction and operation seriously.(2) leakage: waterproof layer leaking water, mostly in the floor through the floor of the pipe root, floor drain, sani
39、tary ware and Yin and Yang corner and other parts, because the root canal, floor drainOther parts loose, bond fragile, brushing waterproof layer is not tight or local damage, voids, parts joint seal lap length not caused.Before the construction of the waterproof coating, it should be carefully checked and repaired.