Single Component Polyurethane Water-Swelling Sealant Has Good Durability

Single component polyurethane water-swelling sealant is a kind of polyurethane type amorphous paste with one-component, solvent-free, water swelling. The amorphous paste ensure that it can be used to prevent infiltration in irregular base. It has double sealed water stop function. Single component polyurethane water-swelling sealant not only has elasticity water stop of rubber but also has volume expansion stop water after soaking. And it can be cured in humid environments. Curing time depends on the temperature and humidity of environments. Compared with waterstop, it can be used in various irregular seams, especially between different materials, wet, pile head and other parts. And it also can be used in vertical surface without sag. Water-swelling sealant can be divided into two kinds according to the swelling ratio: PJ220 and PJ400. It is the economic choice for customers.

This is the white single component polyurethane water-swelling sealant.

SCPS-1: White single component polyurethane water-swelling sealant.

A people is extruding the black single component polyurethane water-swelling sealant with glue gun.

SCPS-2: Black single component polyurethane water-swelling sealant.

Specification

  • Hardness: 65.
  • Temperature range: -40–80°C.
  • Expansion rate: 220%.
  • Package specification: 600 ml per unit.
  • Package:
    • Single component polyurethane water-swelling sealant is packed in foil papers.
    • Each box has 20 single component polyurethane water-swelling sealants.
This is a single component water-swelling sealant.

SCPS-3: Single component polyurethane water-swelling sealant.

There are three single component water-swelling sealants on the box.

SCPS-4: Single component polyurethane water-swelling sealant packed in box.

Table 1: Single Component Polyurethane Water-Swelling Sealant Technical Data
No. Item Index
PJ220 PJ400
1 Solid content ≥ 85%
2 Density (g/cm3) 1.3 ± 0.1
3 Sagging height (50 ± 2) °C ≤ 2 mm
4 Surface cures time ≤ 24 h
5 Tensile strength after 7 days (MPa) ≥ 0.4 ≥ 0.2
6 Softness in low temperature (-20 ± 2) °C, 2h No crack.
7 Tensile performance Tensile
strength
≥ 0.5 MPa
8 Elongation at break ≥ 400%
9 Volume swelling ratio ≥ 220% ≥ 400%
10 Volume swelling retention ratio immersed in water for long time (28d) ≥ 90%
11 Resistant to water pressure (MPa) 1.5 water impermeable 2.5 water impermeable
12 Actual cure thickness (48 h) ≥ 2 mm
13 Harmful substance content Volatile organic compounds ≤ 200 g/L
Benzene ≤ 0.1 g/kg
Toluene and xylene ≤ 50 g/kg
Toluene-2, 4-diisocyanate (TDI) ≤ 5 g/kg
14 Volume swelling retention ratio after immersed in solution (3d) (This item is carried out by supply and requisitioning parties according to the underground water quality.) 5% calcium hydroxide solution ≥ 90%
5% sodium chloride solution ≥ 90%
This is the process of installing the single component polyurethane water-swelling sealant into glue gun.

SCPS-11: Process of installing single component polyurethane water-swelling sealant.

Glue gun installation tips

Single component polyurethane water-swelling sealant should used with glue gun. The right picture will show you how to install the single component polyurethane water-swelling sealant in glue gun. It is easy to learn and use.

Feature

  • Good seal and water stop effect.
  • Good durability, excellent chemical stability.
  • Flexibility, applied to various irregular base.
  • Good adhesion, moist ground also can be bonded firmly.
  • The rate of mass change is low.
  • Construction is simple, easy to operate.
  • Environmentally friendly products, safe and non-toxic.
  • Economic price.

Application

  • Underground constructions.
  • Tunnel.
  • Protective engineering.
  • Subway.
  • Sewage treatment tank.
  • Construction joints.
  • Deformation seam.
  • Wall seam.
  • Pipe trench.
  • Filling and sealing joint of door.
  • Sealing joints of window.
  • Expressway.
  • Bridge.
  • Airport runway.
The single component polyurethane water-swelling is used with glue gun.

SCPS-5: Single component polyurethane water-swelling used with glue gun.

A people is fixing sealing joints of window with white single component polyurethane water-swelling sealant.

SCPS-6: White single component polyurethane water-swelling sealant used in window.

The construction joints are filled with black single component polyurethane water-swelling sealant.

SCPS-7: Black single component polyurethane water-swelling sealant in construction joints.

A people is fixing the wall seam with white single component polyurethane water-swelling sealant.

SCPS-8: White single component polyurethane water-swelling sealant in wall seam.

A people is fixing the seam of ground with white single component polyurethane water-swelling sealant.

SCPS-9: White single component polyurethane water-swelling sealant in ground seam.

A people is fixing the pipe trench with black single component polyurethane water-swelling sealant.

SCPS-10: Black single component polyurethane water-swelling sealant used in pipe trench.