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.

White single component polyurethane water-swelling sealant.

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.

Single component polyurethane water-swelling sealant.

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

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%

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.