Single Unit Polyurethane Waterproofing Membrane

Single Unit Polyurethane Waterproofing Membrane

DYC-731 SPU one component polyurethane waterproof coating uses isocyanate, polyether polyol as main materials, coupled with accelerator, plasticizer,additive through careful synthesis. Its film solidifying mechanism is thre is a chemical reaction of the NCO hydroxyl of polyurethane prepolymer...

Product Details

Single Unit Polyurethane Waterproofing Membrane

DYC-731  SPU one component polyurethane waterproof coating uses isocyanate, polyether  polyol as main materials, coupled with accelerator, plasticizer,additive  through careful synthesis. Its film solidifying mechanism is thre is a chemical  reaction of the NCO hydroxyl of polyurethane prepolymer with air or moisture  vapor of base surface, it's a kindof new generation and environmental friendly  waterproof coating. It can form a harmless,tasteless,high elasticity rubber  waterproof film and also can be used on wet substrate.
 

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 Features:
 1) Single unit,  free of mixing, instant available, convenient installation, saving construction  time.
 2) High tensile  strength, high elongation rate, good elasticity, good endurance to high &  low temperature,good adaptability to substrate shrinkage, cracking and  deforming.
 3) Strong  adhesion, excellent fluidity, can firmly bond to various substrate materials,  good for complicated surface.
 4) For a thick  coating, good density, free of pinhole & bubble.
 5) Coating formed  by chemical reaction, durable in water logging, corrosion, mildew and fatigue.
 6) Good  environment performance, using high boiling point solvent, free of benzene and  coal tar, no need adding solvent during installation.
 7) Different  colors available, wide range of application.

 Executive standard:

SPU    Executive standard:GB/T19250-2013

ITEM

Index

Solid content  %  ≥

85

Surface dry  h  ≤

12

Hard dry  h  ≤

24

Tensile strength  Mpa  ≥

2

6

Elongation at break  %  ≥

500

450

Tearing strength  (N/mm)≥

15

30

Low temp bending

-35℃, no cracking

Oil permeability, Piece  ≤

1

Water tightness

0.3Mpa, 120min, no leakage

Heat expansion rate  %

-4.0~+1.0

Adhesion strength  Mpa  ≥

1

Moisture absorption  %  ≤

5


How to use SPU waterproofing coating?
 1)  Application surface be dry (water content<9%), smooth, solid, no oil or  dust, ambient temp 5℃~35℃.
 2)  Stir 3~5min to mix thoroughly before brash (The mixture shall be used up within  30min, avoiding solidifying before application), use plastic/rubber scraper to  coat it onto surface. Better do it in 2~3 separate passes, with a thickness of  0.7~0.8mm per pass. Only do the next pass when the previous pass is hard dry, normally  a 24h interval is needed (longer in unventilated or cold environment).
 3)  Coat the next pass vertically to the previous pass, corners and pipe roots need  fabrics as reinforcement.
 4)  Before the last pass gets dry, sand can be sparsely placed on top of the  coating to strengthen its bonding ability with the following protective layer.
 5)Do  not walk on top of the coating before it is hard dry, avoiding any damage.
 6)Protective  layer can be built after the waterproofing layer is hard dry.


     Component (s)

Approx
     Unit N.W

Barrel
     Weight

Barrel size

Approx
     Unit CBM

Ref.
     USAGE

Remarks

kg/Set

kg/barrel

Dia*Height  (cm)

cbm/set

kg/

One

20kg

20

26*32

0.083

2.1-2.3

Thickness based on 1.5mm

2.8-3.1

Thickness based on 2.0mm


Where to use single conponent polyurethane  waterproofing coatings?

  • Home used in basement,roof,kitchen and  toilet.

  • Municiple engineering project railway,road,highway,subway  and tunnel project. Dam and other water conservancy facilities.

  • Water channel,swimming pool,sewage pool  and municipal comprehensive pipeway engineering.

  • Factory plant and equipment room.

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Cautions:

  • Use up at one time after open,  the rest shall be sealed to avoid being solidified.

  • Keep ventilated, the  application temperature can’t be lower than 5℃

  • The coating surface will  forming a thin layer when the coating is stored for a long time, eliminating it  when use.

  • Take protection measures  before the coating is solidified completely, strictly forbidden to walk on the  waterproof layer, stacking materials or equipment;


Storage:

  • Coating shall be stored in  dry, ventilated indoors, keep away from sunlight, moisture and fire.

  • The shelf life is 9 months under sealed condition.

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