Water-Based PU waterproof coating , Made of water-based Polyurethane dispersion as main film -forming material , Adding pigments and fillers and other additives . Curing film through water volatilization .
Product classification and specification :
PU coating
|
Product classification |
color |
Specification |
Construction method |
|
UV / No-UV |
white |
25kg/barrel |
Roller,brush,spary
|
Primer
|
Product classification |
color |
specification |
Construction method |
|
Water based Reaction type primer |
A: white B:yellow |
A:10kg/barrel B:1kg/barrel |
Roller /brush |
Product application and features:
Water-based materials , Green and environmental friendly .
Single component , instant use and easy to apply .
Coating film has good water resistance, good corrsion resistance and Well imporosity .
Long-term UV resistance .
The PU coating film has high tensile strength , good elongation and excellent high and low temperature resistance
The coating film is compact and fee from needle holes and bubbles .
Technical date :
|
No |
Item |
Technical date |
|
|
1 |
Soild content /% |
≥60 |
|
|
2 |
Density/(g/ml) |
报告实测值 |
|
|
3 |
Surface dry time /h |
≤4 |
|
|
4 |
Hard dry time/h |
≤12 |
|
|
5 |
Tensile strength/MPA |
≥2.0 |
|
|
6 |
Elongation at break/% |
≥500 |
|
|
7 |
Tear strength /（N/mm） |
≥15 |
|
|
8 |
Bending at low temperature /℃ |
-35℃,No cracking
|
|
|
9 |
Water impermeability |
0.3MPa，120min，imporosity |
|
|
10 |
Elastic recovery/% |
≥70 |
|
|
11 |
Bonding strength /MPA
|
Standard test conditions |
≥1.0 |
|
Wet substrate |
≥0.5 |
||
Applicable scope:
Application to waterproof of roofing、 undergroud and Metal roof .washing and totile etc waterproof project .
Working poins:
Base layer treatment -Brush primer-Detail enhancement treatment-Coating film of large area–closing treatment-inspection
Base layer treatment: the base layer should be soild and dry and does not contain mud and sand ,litters;The internal corner should be treated into smooth arc; Handle the substrate when new the roof and metal roof ;
Brush primer: Mix primer A and B as the percent 10:1 , stir thoroughly,then Mix with water as the percent 30%–50%, stir thoroughly and brush on the substrate, dosage 0.05~0.1kg/m2, dry time 10~20min, If have rest , can use in future .
Detail enhancement treatment: The deformation seam , water fall opening , protruding pipe , eaves gutter , and gutter etc part , Set up enhanced waterproof layer or perform corresponding procedures according to requirements of treatment of key and difficult points .
Coating film of large area : Can brush or spray . must be brush 2 to 3 times , During each pass of coating , should be wait 2~4 hours ,Brush the next time , Vertical construction.
Closing treament: after waterproof layer area is finished , the waterproof layer should be closed , the closing treatment should be in compliance with the requirements of treatment of key and difficult points .
Inspection: Do as the requirement of different area’rule .
Transport and storage:
1.Products of different types or specifications should be stored separately during storage and transportation.
2.Against insolation and rain , the storage temperature should be 5℃-35℃.
3.The storage period is one year .
Precautions:
1. No work is allowed to be carried out in snowy and rainy days or days with wind being 5℃ to 35℃。
2.Applicable to wet base surface: work can be carried out on the wet base surface as long as there is no visible water on the base surface , Therefore , it can be applied in rainy season . Notice : cannot work under blazing sun .
3.The ambient temperature of work shall be 5℃-35℃。
4. Before construction PU coating , Need Primer to handle the substrate .
1.0mm Dosage 2.0kg/m2-2.2kg/㎡
