Hengshui Guangfeng Engineering Rubber and Plastic Co., Ltd.

Product list Specification of component polyurethane water-swellable sealant: m pieces/box
Expansion rate: times, times
Density: .ton
One-component polyurethane water-swellable sealant is a single-component polyurethane water-swellable sealant Components, solvent-free, water-swellable polyurethane amorphous paste. Guangfeng is an adhesive produced in strict accordance with the quality assurance system.
Advantages of one-component polyurethane water-swellable sealant adhesive
Single-component composition
Elastic
Good gap-filling performance
Withstand high-intensity dynamic loads
Non-corrosive
Shock absorbing
Non-conductive
Can bond a variety of materials
One-component polyurethane water-swellable sealant adhesive
One-pack The unique performance advantages of water-swellable polyurethane sealant make it have a very wide range of application in practical engineering applications.
Technical data of one-component polyurethane water-swellable water-stop glue
Density (uncured)../ depends on color
Stability (non-sag): very good
Color : black
Curing method: moisture curing
Surface dry time: about minutes
Curing rate: about mm/hour
Elongation at break
Working temperature (continuous) ℃ ~＋℃
Short term (up to hours) ℃
Shelf life (storage temperature lower than ℃) months
Note: * At ℃ and % relative humidity
One-component polyurethane case Application scope of water-swellable sealant adhesive
Single-component polyurethane water-swellable sealant is mainly suitable for industrial and civil construction underground projects, municipal tunnels, protection projects, mountain and underwater tunnels, subway railways, sewage treatment tanks and other projects Waterproofing of construction joints (including post-cast belts), deformation joints and embedded components, as well as water leakage control in existing projects. Water-swellable water-stop glue is also used to seal structural joints and prevent pipe leakage, such as rough or smooth structural joints in concrete castings to seal the joints between prefabricated parts (such as entrance holes, box-type underground trenches, cable trenches , pipe trenches, etc.) joint sealing bolts around H-shaped steel or sealing of orthogonal pile walls such as gaps around pre-cast holes, etc.
Has good chemical resistance: can resist hydrochloric acid, seawater, sodium carbonate, hydrogen Chemical media such as potassium oxide can be directly used in drinking water projects. It is safe, non-toxic and is an environmentally friendly product.
Water-swellable water-stop glue solidifies by reacting with moisture in the air. Generally, the lower the temperature, the lower the moisture content in the air, so the reaction process will also slow down.
Instructions for use
Surface preparation
In advance, use a wire brush to remove sand and concrete residue from the construction joints within the laying range, and then wipe it with a rag or rinse it with high-pressure water. The surface can be rough. , can also be flat, dry or wet. When constructing water-swelling water-stop glue, heavy rain or long-term contact with water should be avoided. Otherwise, the water-stop glue will expand prematurely, causing the bond with the concrete to fall off and lose the anti-seepage function.
Note: Do not construct in an environment below ℃ or above ℃. The most suitable temperature for the substrate is ℃~℃.
In order to ensure that the water-swelling water-stop glue has good adhesion with the concrete, sufficient curing time must be ensured. After construction, the time for the water-stop glue to harden on the surface should normally not exceed an hour. The next concrete pouring can be carried out only after the surface is completely dry to the touch.