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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 room The technical disclosure is applicable to the construction of waterproof and cold work with polyurethane coating on toilets,toilets and other floors.1.material re
2、quirements (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 polyurethane Ester prepolymer,
3、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 component A is
4、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 use Materials should be tightly sealed to preve
5、nt material failure.Main technical performance:Solid content:93%The tensile strength is not less than 0.7Mpa Elongation at break ranged from 300%to 400%Heat resistance of 80 degrees,not flowing Low temperature flexibility:20 degrees around the 20mm diameter round bar,no crack Water impermeable:0.3Nm
6、m2.(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 on hand Xylene:use dilutio
7、n and cleaning tools Polyester nonwoven fabric or glass cloth:Specifications for 60g 2.main machines and tools Should be equipped with an electric mixer(power 0.3 0.5KW,200500 to min),mixing barrel(volume 10L),paint bucket(3L),plastic Material or rubber scraper,rolling brush,paint brush,spring scale
8、,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 shovel Flat,clean,light pressure,yin and Yang Kok should put into arc or obtuse angle.(2)the surface c
9、oating 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 slope meets the design requirements.The components mu
10、st 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 adhesive After inspection and completion of the hidden works acceptance.(5)all kinds of materi
11、als used for waterproof layer,the base treatment agent,xylene and other flammable substances,storage and storage should be far away from the source,construction exercises Fireworks should be strictly prohibited during the process.(6)the construction of waterproof layer shall not be carried out on ra
12、iny days or windy days,and the environmental temperature during winter construction shall be no less than 5 degrees centigrade.4.operation process Technological process：Clean the surface of the base layer,detail treatment,preparation of base rubber,brushing the bottom rubber,brushing the bottom glue
13、(equivalent to cold base oil),adding the additional layer of detail The first coating second times coating third times coating waterproof layer construction waterproof layer test water protection layer finishing layer construction waterproof layer Two water test to waterproof layer acceptance (1)bef
14、ore 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,cracking and other defects.Water content is generally not greater than 9%,The surf
15、ace 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),and stir evenly.The amount of preparation should be specific Circumstances should not
16、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 temperature season 4h,when the handle is not sticky,you can do the next process.(4)coating water
17、proof 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 construction,coating waterproof material The mixture ratio should be measured accurately,and the electric mi
18、xer 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 before large-area besmear brushs A cloth,two oil waterproof additional layer,after the drying of the rubbe
19、r 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 cover In the pipe,root and other details,and besmear coating waterproof material,after the normal temperature 4H table dry,and then brush second coating waterproof
20、material,24h work,you can carry on the big surface Construction of laminated coating waterproof layer.3)coating waterproof layer:The first coating waterproof layer:the already good polyurethane coating waterproof material,with plastic or rubber scraper evenly coated on the base has been coated with
21、glue Layer 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 cured coating,use the direction perpendicular to the first coating and evenly brush on the surface of coating,the coating amou
22、nt is slightly less than that of the coating First,the dosage is 1kgm2,thickness of 0.7 1mm,no leakage,brush and bubble and other defects,24h curing,the first test water,in case of seepage Should be carried out to repair,leakage,leakage does not occur so far;In addition to the above brushing method,
23、you can use a long roll brush layered,vertical direction of each other four times brushing,each coating amount of 0.6kgm2;such as bar Parts may also be sprayed,but 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 const
24、ruction of waterproof coating layer,should be in accordance with the standard procedure,organize relevant personnel carry out technology and materials used in construction,complete the construction of waterproof layer,after the water test above 24h,found no water seepage Water Leakage for qualified,
25、then inspection and acceptance of concealed work,pay under construction.(5)the problems encountered in the construction process should be dealt with as follows: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 a
26、mount 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 amount 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
27、 nail 0.5%.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 accelerator,and the amount of addition shall be no more than that of a nail 0.3%.4)coating waterproof layer besmear 24h not cured,still have sticky phenomenon
28、,besmear besmear second paint have difficulty,can first besmear a layer of talcum powder,and then fuck When the utility model is used,the feet 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 t
29、hen with the preparation of a material,otherwise it will affect the quality of coating.5.quality standard (1)guarantee project:1)coating waterproof material and non-woven fabric technical performance must comply with the design requirements and the relevant standards,the product should be accompanie
30、d by factory certification Water quality certification,on-site sampling test,unauthorized or re tested unqualified waterproof material shall not be used 2)polyurethane coating waterproof layer and its details and other practices must comply with the design requirements and construction specification
31、s,and shall not have leakage phenomenon.(2)basic items:1)waterproof polyurethane coating base should be firm,clean,smooth surface,yin and yang angle is in a circular arc shape or obtuse,polyurethane adhesive coating should have Uniform,no leakage coating.2)polyurethane base rubber and polyurethane c
32、oating additional layer,its brushing method,lap,and head should comply with the provisions,and should be bonded firmly,tight,joint sealing Strict,no damage,bulging.3)polyurethane coating waterproof layer should be painted evenly,the protection layer and waterproof layer bonding firm,no damage,uneven
33、 thickness and other defects.(3)allowable deviation items:The lap width of polyurethane coating waterproof layer 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 sh
34、ould be taken promptly,before doing a protective layer,not wear spikes in and out In order to avoid damage to 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
35、 drain,drain and so on should be kept unblocked.During construction,debris should be prevented from 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,ca
36、using leakage of hidden dangers.(5)polyurethane coating waterproof layer construction process,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 hol
37、lowing generally occurs in between the leveling layer and the waterproof coating layer and the joint because the moisture content is too large,make the film Hollowing,bubble formation,moisture content should be controlled in the construction and operation seriously.(2)leakage:waterproof layer leakin
38、g water,mostly in the floor through the floor of the pipe root,floor drain,sanitary ware and Yin and Yang corner and other parts,because the root canal,floor drain Other 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.