Two Components Polyurethane Waterproof Coating

الوصف

Description

SPU***1 is a synthetic polymer waterproof coating by two components reaction. Component A is a polyurethane prepolymer through the reaction between polyether polyol and isocyanate. Component B is a colorful liquid consisting of plasticizers, curing agents, thickeners, coagulants and fillers.

Where to use

 Undergrounds, cold stores and grade;

 Bathroom, kitchen and pools;

  Hard to dry substrate of underground construction;

 Subways, channels, bridges, tunnels and unexposed roofs;

Advantages

       Can be applied on the wet underground substrate with strong bonding power;
Multipurpose to apply on horizontal planes, vertical planes and top planes;
Seamless, no pinholes and bubbles;
Liquid with cold applied;
Fast solidify and convenient to apply.

Standards

ASTM C **6

Typical properties

Packaging

Component A and B of SPU***1 are sealed in 8kg and *0kg pails, respectively,transported in wooden cases. Each wooden case can be contained *8 pails of component A or *6 pails of component B.

Storage

SPU***1 material should be stored by sealed pails at dry and well-ventilated places and protected from sun or rain.The temperature in stored places can not be higher than *0° C. It can not be closed to fire sources.The normal shelf life is *2 months.

Transportation

SPU***1 is needed to be avoided sunshine and rain.Fire sources are forbidden during transportation.

Application System

l Constructive System

The system is basically consisted of substrate, additional layer, waterproof coated membrane and protection layer.

l Coverage

1.7kg per m2 gives dft 1mm minimum. Coverage may vary with the substrate condition during application.

l Mixing

The ratio of component A to B is 1:2.5 according to the construction amount.

l Application Method

Surface preparation

Surfaces should be dry, stable, clean, smooth, without pockmarks or honeycombs and free from any dusts, oil or loose particles. Cracks and surface irregularities need to be filled by sealants and do additional waterproofing. For smooth and stable surfaces, this step can be skipped.

Additional layer

Paint SPU***1 as additional layer to enhance at internal and external corners, drain pipes, floor drains or embedded parts.

Application of waterproof coated membrane

It can use rubber scrapers or spray equipments to paint 2 or 3 times. After fully dry, it can be painted again. The normal time between each painting is *4 hour. The direction of second time painting needs to be perpendicular to the first time painting.

Application of protection layer

After waterproof coated membrane is fully dry and meets quality requirements, it can begin application of protection layer.

Notice
 

l  The temperature for application of SPU***1 should be above 5℃.

l  SPU***1 has to be used out as soon as possible and no more than *0 minutes once opened. It can not be exposed to the air for a long time.

l  The storage and application places should be well-ventilated and no fire.