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Two-component polyurethane waterproof coating
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Two-component polyurethane waterproof coating

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产品描述

 


 

product description

 

The two-component polyurethane waterproof coating is a two-component chemical reaction-curable waterproof material, wherein the component A is an isocyanate-terminated prepolymer obtained from a polyether and an isocyanate, and the component B is a plasticizer, a curing agent, and a thickening agent. A color liquid composed of a pre-gelling agent and a filler. When used, the two components of A and B are uniformly mixed in proportion, coated on the surface of the waterproof base layer, and often cured by temperature crosslinking to form a rubbery elastic coating film.

 


 

Features

 

The two-component polyurethane waterproof coating forms a seamless, complete elastic waterproof layer after curing, which improves the waterproof and impermeability of the construction project, which is unachievable by the waterproofing of the coil, especially the coating film has high strength and elongation. It has strong adaptability to cracking or stretching of the base layer. It is firmly bonded to the base layer, and has strong adhesion to the waterproof material and concrete, wood, cermet, asbestos tile, etc. It can also be used as a binder.

 

Cold construction, simple construction process, can be sprayed, rolled, brushed, flexible construction, and has good adaptability to all kinds of surface layers.

 

Maintenance is easy, only partial repair of damaged parts can still achieve the original waterproof effect, saving time, effort and low cost.

 

Environmentally friendly products, the product smell is small, reducing the impact on people and the environment, is an ideal tar polyurethane replacement product.

 

 


 

Specification model

 

 

According to physical and mechanical properties, it is divided into type I, type II and type III.

 


 

Scope of application

 

The product can be applied to the waterproof construction of various civil and industrial buildings such as roofing, basement, toilet, swimming pool, etc. It is more suitable for waterproof construction with complicated shape and vertical and horizontal parts of the pipeline.

 

Click on the link to the project case

 


 

Construction process

 

Base treatment: The base layer is required to be firm, flat and free of debris. The yin and yang angles should be rounded, the diameter of the female corner is greater than 50mm, and the diameter of the male corner is greater than 10mm.

 

Ingredients and dosage: According to the application dosage, the components of A and B are mixed in proportion, and the mixture is evenly applied. The reference dosage is: 1mm thick coating film dosage is about 1.5-1.7kg/m2.

 

Large-area waterproof construction: the paint is evenly coated with a squeegee, and the subsequent brushing should be applied in the vertical direction after the previous curing and film formation, and the carcass reinforcement material should be added to the corner of the floor of the underground engineering, and Waterproof coating should be added.

 

Coating film thickness: underground engineering coating thickness can be 1.2-2.0mm, recommended not less than 1.5mm, toilet bath room is not less than 1.5mm, non-exposed roofing project multi-channel fortification, each road should not be less than 1.5mm (according to the defense road The number of superimposed), when the waterproof level is a fortification of the second-grade roof, the thickness should not be less than 2mm. When the carcass reinforcement material is sandwiched between the coatings, the thickness of the coating under the carcass is not less than 1.0mm, and the thickness of the upper coating is not less than 0.5. Mm.

 

Finishing layer construction: The last time the coating is uncured, the fine sand is scattered on the surface.

 

Protective layer: The surface of the coating waterproof layer should be isolated and protected according to the design requirements.

 

 

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Engineering case

 

Click on the link to the project case

 


 

Performance

 

GB/T19250-2013 "Polyurethane Waterproof Coating"

Serial number

                               project

                                 Technical indicators

           Ⅰ

          II

         III

1

   Solid content (%) ≥

Two-component

                                  92.0

2

Dry time (h) ≤

                                  12

3

Dry time (h) ≤

                                  24

4

Tensile strength (Mpa) ≥

         2.00

      6.00

     12.0

5

Elongation at break (%) ≥

         500

      450

     250

6

Tear strength (N/mm) ≥

         15

      30

     40

7

Low temperature bending

                             -35℃,No crack

8

Impervious

                   0.3MPa,120min,impermeable

9

Bond strength (Mpa) ≥

                                 1.0

 

 

 

 


 

 

 

 

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