White single component polyurethane water-swelling sealant.
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.
|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.|
|≥ 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.