Polyurethane Waterproof Coating

Polyurethane waterproof coating

DETAILS:

BRAND

CNBM

Main Raw Materials

Polyurethane  isocyanate

CERTIFICATE

Green Building / ISO9001/14001

KEY WORD:

Polyurethane /Waterproof

SIZE:

Single package size

30X3X65 cm

Single gross weight

20.3 kg

Package Type

The base course shall be flat, solid, clean, dry, free from dust, particles, boulders and irregularities.

TECHNICAL DATA:

Type :

polyurethane waterproof coating is also called wet curing polyurethane waterproof coating, which is made of isocyanate and polyether polyol as the main raw material, and is made from addition polymerization with various additives and fillers. Chemical reactions after contact with moisture from the-NCO end base in the polyurethane pre-polyurethane body and the moisture in the air, forming a tough, soft and non-joint rubber waterproof membrane on the base surface.

Table dry time/ h ≤

12

Tensile strength/ MPa ≥

12

Elongation at break/% ≥

250

Tear strength/ (N/ mm) ≥

40

Low temperature bending ≤

free of cracks (below 35 ° ）

non-water permeability

0. 3MPa, 120min, impervious

Heating expansion rate/%

（-4.0 1.0）

Bond strength/ MPa ≥

1

Water absorption/% ≤

5

Construtiong Method

1.The base course shall be flat, solid, clean, dry, free from dust, particles, boulders and irregularities.

2. Detail treatment: tube root is sealed and treated;Extra waterproof layer shall be applied to the details such as yin and yang angle and tube root. The internal and external corners are made of circular arc.

3.The waterproof layer should be painted evenly, each time interval is 10-16h (the surface is not sticky, the coating has a certain hardness), the scraping direction is perpendicular to the upper pass, and before 0. 5-1. 0kg/ m2 before the dosage of the coating is not cured.

4.Finish layer construction: the facade part, in order to increase the surface layer between the finish layer and the coating room of the face brick, the general practice is to apply the last coat of coating on the coating surface, and the coating surface shall be thin and clean. After the waterproof layer is completed for 48 hours, the finish layer shall be constructed according to the design requirements.