PSL-90 2K Polyurea Joint Sealant
Discover PSL-90, a fast-curing, 100% solids 2K polyurea joint sealant. Ideal for industrial concrete floors, it offers extreme durability, flexibility, and rapid return to service. Solvent-free and designed for heavy-duty traffic.
Product Info
Meet PSL-90, the ultimate solution for demanding industrial concrete joints. This two-component, 100% solids, and VOC-free polyurea sealant is engineered for rapid curing and exceptional durability. Designed to be self-leveling, PSL-90 creates a hard yet flexible seal that withstands heavy-duty traffic, including steel-wheeled trucks and forklifts.
Its unique, catalyst-free formula reduces sensitivity to moisture and allows for application in a wide temperature range (-10°C to 40°C), making it perfect for both interior and exterior projects. PSL-90 ensures a smooth, seamless finish, protecting joint edges from spalling and deterioration while providing excellent resistance to aging and industrial chemicals.
Key Features
- Rapid Return to Service: With a gel time of just 5 minutes and walkable in 1 hour, PSL-90 significantly reduces facility downtime.
- Extreme Durability & Flexibility: Forms a tough, Shore A 90 elastomer with over 350% elongation, absorbing impacts and movement without cracking.
- Wide Application Window: Can be applied in temperatures ranging from -10°C to 40°C with minimal impact from humidity.
- Superior Adhesion: Bonds tenaciously to concrete, ensuring long-lasting protection for control and construction joints.
- 100% Solids, VOC-Free: An environmentally friendly, solvent-free formula safe for use in indoor environments like food processing plants.
- Excellent Chemical & Thermal Stability: Withstands a wide range of chemicals and maintains performance in temperatures from -45°C to 100°C.
- Topcoat Compatible: Creates a smooth transition for the subsequent application of polyurea, polyurethane, and epoxy topcoats.
Primary Applications
PSL-90 is the ideal choice for filling and protecting joints in new or existing industrial concrete floors. Its robust performance makes it suitable for:
Concrete Joint Repair: Filling random cracks and repairing spalled joint edges.
Industrial & Workshop Floors: Withstanding heavy machinery and forklift traffic.
Food & Beverage Facilities: Including processing, canning, and bottling plants.
Warehouses & Distribution Centers: Protecting joints from heavy, continuous traffic.
Refrigeration Plants & Cold Storage: Maintaining flexibility and adhesion in low temperatures.
Wastewater Treatment & Chemical Plants: Offering excellent chemical resistance.
Control Joints in Concrete Slabs: Providing durable, long-term protection.
Technical Parameters
| Property | Condition | Value |
| Solids Content | – | 100% |
| Gel Time | 25°C, 50% RH | 5 Minutes |
| Tack-Free Time | 25°C, 50% RH | 30 Minutes |
| Walkable Cure | 25°C, 50% RH | 1 Hour |
| Full Service Cure | 25°C, 50% RH | 24 Hours |
| Tensile Strength | 25°C | >8 MPa |
| Elongation at Break | 25°C | >350% |
| Hardness | 25°C | Shore A 90 |
| Water Absorption | 7 days of soaking | <1% |
| Wear Resistance | CS 17, 1000g, 1000 cycles | 0.50 gram loss |
| Dry Service Temperature | – | -45°C to 100°C |
| Application Temperature | – | -10°C to 40°C |
| Available Colors | – | Concrete Gray (Custom colors available) |
Application
Application Equipment:
PSL-90 is a professional-grade product that requires specific application equipment for optimal results. It must be applied using a low-pressure, two-component pump with a 3/8″ x 40 static mixing rod. Polyurea cartridges are also a suitable application method. Due to its extremely fast gel time, this product cannot be mixed or poured by hand.
Application Instructions:
Surface Preparation: Ensure the joint is clean, dry, and free of all grease, oil, and loose debris.
Repair & Grinding: Grind the joint edges to create a solid, sound surface. Repair any spalls or major defects.
Priming: Apply a suitable epoxy primer to the joint walls to ensure maximum adhesion.
Application: Use the specified two-component equipment to fill the joint, slightly overfilling to allow for shaving.
Shaving: Depending on the ambient temperature, use a sharp blade or scraper to shave the excess sealant flush with the concrete surface 10-30 minutes after application.
Inspection & Repair: Check for any defects or voids and perform touch-ups as needed.
Packaging & Storage:
Components: Two components, A & B.
Packaging: Supplied in 40 kg kits (20 kg Component A and 20 kg Component B).
Shelf Life: 12 months when stored in a closed, sealed container in a cool, dry, and ventilated environment.
Handling: After opening, barrels should be purged with nitrogen or dry air and resealed to protect from moisture contamination.
