Shandong Jiancheng Environmental Protection Technology Co., Ltd.
Shandong Jiancheng Environmental Protection Technology Co., Ltd.
Hand brushed polyurea HBPUA types
1. Single-component hand-brushed polyurea "JCHBPUA-001", is a single-component polyurea waterproof material ready to use. Its purpose is mainly waterproof and expansion joint filling.
2. Two-component hand-brushed polyurea "JCHBPUA-002" is a two-component polyurea material. Its main purpose is waterproof and corrosion-resistant. It can be used on outdoor concrete or tile foundation floors. Its performance is second only to sprayed polyurea "JCSPUA-001", with 300% elongation, excellent weather resistance and waterproof performance.
3. Polyurea self-leveling "JCHBPUA-SL001" is a load-bearing polyurea floor material, suitable for indoor workshops and garage floors, or corrosive workshop floors. It has excellent physical and mechanical properties, the surface hardness can reach 7H, and it is waterproof and corrosion-resistant.
Application scenarios of hand-brushed polyurea HBPUA
Pools, outdoor concrete or tiled floors, reservoirs, workshops, terraces and other floors that require waterproofing.
How to use polyurea HBPUA by hand brushing
1. Base grinding, crack cutting treatment, and vacuum clean;
2. How to use the "JCEPDT-006" primer, apply the polyurea primer brush once, and there is whitening on the ground, and re-coat locally. "JCEPDT-006" is stirred evenly according to the label ratio, apply it evenly once with the medium-hair roller, and use it within 30 minutes.
3. How to use the sealing layer of the "JCEPZT-007" intermediate paint, and use a full batch of "JCEPZT-007" intermediate paint + quartz sand, stir evenly according to the label ratio, use a push knife to scrape it evenly, and use it within 30 minutes.
4. HBPUA is mixed evenly according to the label ratio and used within 20 minutes. The minimum unit consumption of all polyurea materials is 1.8 kg per square meter.
Precautions for hand-brushing polyurea HBPUA
1. The ground must be completely closed and no air holes are allowed.
2. Mix HBPUA evenly, control the discharge speed, ensure that the two components are discharged at the same time, and there is no deviation in the material.
3. The two-pass construction interval should not exceed 48 hours. After it exceeds, it must be polished.
4. The ground moisture content should not exceed 8%.
Elastic Handmade Polyurea Anti-Cracking Coating: Comprehensive Guide
Elastic handmade polyurea anti-cracking coating is a high-performance, hand-applied protective material designed to prevent surface cracks and structural damage across industrial and commercial applications. Combining exceptional elasticity, seamless adhesion, and chemical resistance, it provides a durable protective layer that accommodates substrate movement, bridges micro-cracks, and extends service life. This guide explores components, installation steps, maintenance schedules, and design philosophy, offering a complete reference for engineers, contractors, and facility managers.
High Elasticity: Effectively bridges hairline cracks and accommodates substrate expansion and contraction.
Seamless Coverage: Hand-applied coating ensures uniform protection with no weak points.
Durability: Resistant to abrasion, chemical exposure, UV radiation, and mechanical impact.
Chemical Resistance: Protects against acids, alkalis, and solvents in industrial environments.
Environmental Compliance: Low VOC content, environmentally friendly, safe for indoor and outdoor use.
Versatile Application: Suitable for roofs, industrial floors, pipelines, storage tanks, and concrete or metal surfaces.
| Parameter | Specification | Test Standard |
|---|---|---|
| Curing Time | 10–20 seconds | ASTM D5895 |
| Tensile Strength | 25–45 MPa | ASTM D412 |
| Elongation at Break | 350–700% | ASTM D412 |
| Shore Hardness (A) | 85–95 | ASTM D2240 |
| Adhesion to Substrate | ≥3.0 MPa | ASTM D4541 |
| Chemical Resistance | Excellent against H2SO4, NaOH | ASTM D543 |
| Water Absorption | <0.5% | ASTM D570 |
| Service Temperature Range | -40°C to 120°C | ISO 817 |
| VOC Content | <50 g/L | EPA Method 24 |
Polyurea Resin Base: Provides elasticity and chemical resistance.
Curing Agent / Hardener: Ensures rapid cross-linking and durability.
Primer (Optional): Enhances adhesion on porous or oxidized substrates.
Application Tools: Brushes, rollers, trowels, or hand-held sprayers for uniform coating.
Protective Equipment: Gloves, goggles, and respirators for safe handling.
Clean the surface to remove dust, oils, grease, or loose particles.
Repair any cracks, holes, or uneven surfaces before application.
Apply a primer layer on porous surfaces to enhance adhesion.
Store resin and curing agent at room temperature (20–25°C).
Mix components thoroughly according to manufacturer instructions.
Apply coating evenly by brush, roller, or trowel to achieve uniform thickness.
Recommended thickness: 1.5–3 mm depending on substrate and exposure.
Allow coating to cure for 24 hours before exposure to chemicals, water, or heavy use.
Inspect for voids, bubbles, or thin spots.
Apply touch-ups if necessary to maintain continuous protection.
Daily Maintenance:
Clean surfaces using mild detergent and water to remove dirt, debris, and chemical residues.
Avoid dragging heavy or sharp objects over the coating.
Periodic Maintenance:
Inspect coating for abrasions, cracking, or delamination.
Touch up or reapply coating in damaged areas to maintain structural and chemical protection.
| Interval | Maintenance Task |
|---|---|
| Daily | Surface cleaning and spill removal |
| Weekly | Visual inspection for micro-cracks |
| Monthly | Touch-up of minor wear areas |
| Annually | Full inspection and recoating if necessary |
Elasticity First: Coating is formulated to bridge substrate micro-cracks and adapt to thermal expansion or structural movement.
Seamless Protection: Hand-applied method ensures uniform coverage without weak points or joints.
Durability: Designed to resist chemical attack, abrasion, UV exposure, and mechanical wear, extending service life.
Environmental Safety: Low VOC, solvent-free, and compliant with eco-friendly coating standards.
Versatility: Adaptable to various surfaces including concrete, metal, and composite materials.
Roofs: Prevents cracking caused by thermal expansion and UV exposure.
Industrial Floors: Protects against heavy traffic, spills, and chemical exposure.
Pipelines & Storage Tanks: Resists corrosion and chemical degradation.
Bridges & Infrastructure: Maintains structural integrity by preventing micro-cracks.
Machinery & Equipment: Provides a flexible protective layer against wear and chemicals.
| Feature | Handmade Polyurea Coating | Conventional Coatings |
|---|---|---|
| Curing Time | Seconds to minutes | Hours to days |
| Elasticity | High, bridges micro-cracks | Low |
| Seamless Coverage | Yes | Often requires multiple layers |
| Chemical Resistance | Excellent | Moderate |
| Durability | Long-lasting | Moderate |
| Maintenance Frequency | Low | High |
Wear protective gloves, goggles, and clothing during application.
Ensure adequate ventilation in enclosed areas.
Avoid skin and eye contact; wash immediately if exposed.
Follow Safety Data Sheet (SDS) instructions for storage, handling, and disposal.
Elastic handmade polyurea anti-cracking coating delivers superior elasticity, chemical resistance, and seamless protection for industrial and commercial applications. Its durable, eco-friendly, and hand-applied formulation ensures long-lasting performance with minimal maintenance. With proper installation, regular maintenance, and adherence to safety guidelines, this coating provides reliable crack prevention and structural protection, making it an ideal choice for roofs, floors, pipelines, and other demanding surfaces.
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