E-108 Hydrophilic Polyurethane: The Professional Choice for Crack Repair and Waterproofing

Crack leakage is a common issue in buildings and infrastructure, especially in underground structures, high-humidity environments, or areas with heavy water influx. Leakage not only threatens structural stability but also increases maintenance costs. Saking's E-108 Hydrophilic Polyurethane, with its rapid expansion, efficient sealing, and excellent waterproofing properties, provides a comprehensive solution for crack repair and is widely used in various waterproofing projects.

What is Hydrophilic Polyurethane?

Hydrophilic Polyurethane is a high-performance material specially designed for repairing water-leaking cracks. It reacts with water, rapidly expands, and solidifies. When the material comes in contact with moisture, its chemical structure reacts to produce foam, which fills the cracks, forming a tight waterproof barrier. This material is especially suitable for crack repairs in high-humidity or water-prone environments, such as basements, subways, tunnels, and dams, where water leakage is a serious issue.

Differences Between Hydrophobic and Hydrophilic Polyurethane

Here is a detailed comparison between the E-107 Hydrophobic Polyurethane and the E-108 Hydrophilic Polyurethane to help you choose the most suitable product based on your needs:

1. Reaction Conditions

• Hydrophilic polyurethane: Requires moisture to trigger the reaction and is suitable for leaking cracks or high-humidity environments.
• Hydrophobic polyurethane reacts without the need for moisture and is suitable for dry cracks or low-moisture environments.

2. Expansion Performance

• Hydrophilic Polyurethane: Expands significantly when absorbing water, filling cracks and small gaps completely, and quickly repairing structures under heavy water flow, offering highly flexible sealing effects.
• Hydrophobic Polyurethane: Expands less, but after curing, it has a higher density, forming a hard seal, suitable for structural reinforcement needs.

3. Post-Curing Characteristics

• Hydrophilic Polyurethane: After curing, it remains somewhat elastic, allowing it to adapt to changes in cracks caused by external forces or temperature fluctuations.
• Hydrophobic Polyurethane: After curing, the material is harder and provides additional structural stability, suitable for repair scenarios that require load-bearing.

4. Application Scenarios

• Hydrophilic Polyurethane: Leaking cracks, high-humidity, or water pressure environments (such as subways, tunnels, basements, and dams).
• Hydrophobic Polyurethane: Dry cracks, low-moisture environments, or scenarios requiring a high-hardness seal (such as foundation crack repair, wall crack filling).

5. Material Characteristics and Applications

• Hydrophilic Polyurethane: Excellent water absorption and expansion performance, suitable for long-term repairs in water-prone environments.
• Hydrophobic Polyurethane: High-density curing layer providing stronger structural stability, especially suitable for crack reinforcement and waterproofing in dry conditions.

Why Use Polyurethane Foam?

The application of foam in crack repairs is indispensable. Its functions and advantages are reflected in the following aspects:

1. Rapid Reaction, Responding to Leaking Environments
   Polyurethane foam reacts quickly when exposed to moisture, expanding even in high-pressure water environments, quickly filling cracks and forming a stable waterproof barrier.
2. Efficient Filling of Fine Crack Details
   When the foam expands, it penetrates every minute gap in the crack, ensuring a complete repair without any missed spots.
3. Creating a Durable, Stable Seal
   After curing, the foam can withstand external pressure and water flow erosion, providing long-lasting sealing effects.
4. Adapting to Crack Deformation
   After curing, the foam possesses a certain degree of elasticity, adjusting to changes in cracks, avoiding secondary leakage caused by structural stress changes.
5. Efficient Construction, Reducing Costs
   Using foam to repair cracks is simple and fast, significantly reducing construction time, labor requirements, and long-term maintenance costs.

Core Features and Advantages of E-108 Hydrophilic Polyurethane

E-108 Hydrophilic Polyurethane performs excellently in crack repair and waterproofing projects. Below are its five core features and advantages:

1. Efficient Water Absorption and Expansion
   The material rapidly expands upon encountering water, generating high-density foam that completely fills cracks, creating a stable waterproof barrier.
2. Elastic Repair, Adapting to Crack Changes
   After curing, the material possesses outstanding elasticity, allowing it to adjust to crack changes caused by external forces or temperature fluctuations, ensuring long-term sealing performance.
3. Exceptional Durability
   The material maintains stable performance over long periods in high-humidity or high-water-pressure environments, providing continuous waterproof protection.
4. Simple and Efficient Construction
   The material reacts quickly, and the construction process is efficient, significantly shortening construction time and reducing labor costs.

Choose E-108 Hydrophilic Polyurethane for a Leak-Free Structural Future

Both hydrophilic and hydrophobic polyurethane foams have their distinct characteristics. However, when it comes to repairing leaking cracks, E-108 Hydrophilic Polyurethane, with its superior water absorption expansion performance and stable sealing effects, is the market's first choice. Whether it's subway tunnels, underground diaphragm walls, or window frame leakage problems, it provides stable and reliable solutions.

With over 30 years of professional experience, Saking is committed to becoming a leading manufacturer of waterproof sealing products. We focus on the research, development, and manufacturing of high-pressure grouting machines, hardware tools, and leak-sealing materials, offering one-stop services from design and R&D to quality inspection and shipping, fully meeting the needs of our customers. For any product inquiries, please feel free to contact us.