Environmental Polyurethane Waterproof Grouting Injection Hydrophilic Material

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Environmental Polyurethane Waterproof Grouting Injection Hydrophilic Material

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Product Description

Basic Information

Material

Polyurethane

Usage Method

Spray

Main Usage

Water Stop, Outdoor

Appearance

Liquid

Density

1.0-1.2 g/cm3

Solid Content

75-90%

Foaming Capacity

500-10000%

Transport Package

18kg/Drum

Product Description

VPU-1 Single Component Waterborne Hydrophilic Polyurethane Grouting Material

VPU-1 is a one-component hydrophilic polyurethane grouting material. It reacts rapidly with water, solidifies and expands to close cracks, effectively stopping water leaks. After reaction, it forms a milky white elastic colloid with high strength, low shrinkage, and excellent impermeability.

Low Viscosity: Quick reaction in water forming an impervious elastic body.
High Strength: Excellent compressive strength and elasticity.
Deep Penetration: Effectively penetrates deep into fine cracks for thorough sealing.
Adjustable: Viscosity and curing speed can be customized to requirements.
Versatile: Ideal for dams, subways, tunnels, and underground structures.

Product Parameters

No.	Item	Test Data
1	Appearance	Light Yellow Transparent Liquid
2	Density (g/cm3)	1.0-1.2
3	Viscosity (mpa.s)	150-350
4	Gel Time (s)	10-100
5	Solid Content (%)	75-90
6	Foaming Capacity (%)	500-1000
7	Expansion Rate with Water (%)	20-30

PU Grouting Materials Comparison

Item	VPU-2 (Hydrophobic)	VPU-1 (Hydrophilic)
Characteristic	High Foaming Rate, Fast Speed	High Solid Content, Low Shrinkage
Reaction Time	15-20 Minutes	10-20 Seconds
Waterproof Features	Displacing Water	Reacts with water to form solid state
Advantage	No Shrinkage, Good Stability	Fast Response, Competitive Price

PU Grouting Steps & Methodology

Polyurethane foam injection enables liquid polymer to be injected into cracks under pressure. High-pressure injection is ideal for high water flow areas like basements and swimming pools. The process involves drilling holes and injecting grout until it fills all voids and expands to seal water damage.

Related Materials & Applications

Scope of Application:

Construction Joints, Structural Cracks and Deformation Joints.
Subway Tunnels, Platforms, and Railway Subgrade.
Bridge Piers, Dams, and Hydropower Station Curtain Grouting.
Geological Drilling and Mine Water Gushing Control.

Packaging, Storage & Profile

Frequently Asked Questions

What is the difference between hydrophilic and hydrophobic PU grout?

Hydrophilic grout (like VPU-1) reacts with water and incorporates it into the structure, making it ideal for wet environments. Hydrophobic grout repels water and is known for high stability and minimal shrinkage.

How fast does VPU-1 react with water?

VPU-1 features a very fast response time, typically achieving a gel state within 10 to 20 seconds upon contact with water.

In which scenarios should I use high-pressure injection?

High-pressure injection is recommended for areas with significant water flow or deep structural cracks, such as subway tunnels, basements, and dam reinforcements.

What is the expansion capacity of this material?

The foaming capacity of our PU grouting materials ranges from 500% to 10000%, allowing it to fill large voids and cracks effectively.

How should the product be stored?

The material should be stored in its original 18kg or 200kg drums in a cool, dry place, away from direct sunlight and moisture to prevent premature reaction.

Can the curing speed be adjusted?

Yes, the viscosity and curing speed of the grout can be adjusted according to specific customer requirements and site conditions.