Bridge Decks & High-Speed Rail
Continuous spray-applied membrane conforms to deck geometry without seams or laps. Crack-bridging ≥600% elongation absorbs traffic-induced deflection and thermal expansion. Bonds directly to prepared concrete.
Factory Direct Supply
Spray Polyurea Coating
TY-SHIELD™ spray polyurea waterproofing coating — a two-component, plural-component spray-applied elastomeric system available in pure and hybrid chemistry types. The selected formulation determines solids content, gel time, hardness, tensile strength, elongation, operating range, and equipment settings. Applied via heated plural-component spray equipment for infrastructure, secondary containment, bridge decks, tunnels, and industrial waterproofing. Request the product-specific TDS before specification.
Pure & HybridPlural-Component SprayFast-Cure SystemProject-Specific TDSInstant Cure-45°C to 120°C≥1000 m²/dayOEM Available
Typical Applications
≥ 1000 m² per day per spray unit
For project-specific pricing, send your technical requirements and destination port.
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Product Overview
Why Polyurea Belongs on Infrastructure Specifications, Not Just Product Lists
Polyurea occupies a distinct position in the waterproofing product family. It is not a coating you open with a screwdriver and apply with a roller. It is a two-component reactive system delivered through heated plural-component spray equipment — a production line deployed on site. The A and B components travel through separate heated hoses at 55–65°C and meet for the first time at the impingement tip of the spray gun. The reaction produces urea linkages — chemically distinct from the urethane linkages in polyurethane coatings — that form in seconds without catalyst and without sensitivity to ambient moisture.
This chemistry translates directly into operational economics. A two-operator spray crew covers ≥1000 m² per day. Pure polyurea is walkable within minutes. On a bridge deck where lane closures cost thousands per hour, or a wastewater treatment basin where bypass pumping is an operational crisis, the cure speed is not a convenience — it is the business case.
The pure vs hybrid distinction matters for specification. Pure polyurea’s amino-terminal chemistry delivers the fastest cure, the highest humidity tolerance, and ≥600% elongation. Hybrid polyurea’s hydroxyl/amino blend extends gel time to ≤40 seconds and allows hardness to be tuned across a Shore A80–A92 range — useful when the coating must balance flexibility against compressive loading or when the substrate geometry requires slightly more working time before gelation. Both formulations share the same operating envelope: -45°C to 120°C continuous, flame-retardant with self-extinguishing behavior, and zero VOC.
TY-SHIELD™ spray polyurea is manufactured by Weifang Tianyuan. Specify pure or hybrid, thickness, square meterage, and destination port. Our technical team can review equipment, application parameters, container configuration, and production schedule after receiving the project requirements.
Applications
Secondary Containment & Chemical Plants
Resists H₂S, industrial acids, and hydrocarbon exposure. Seamless monolithic liner eliminates joint leakage risk. Fire-retardant and self-extinguishing for petrochemical safety requirements.
Tunnels, Subways, Underground Infrastructure
Applied directly to shotcrete or rock. Moisture-insensitive cure allows application in high-humidity underground environments. No dew-point restrictions during spray.
Wastewater Treatment & Water Infrastructure
100% solids, zero-VOC formulation resists constant immersion and chemical attack. Potable-water-grade formulations available — tested to NSF/ANSI 61 requirements. ≥1000 m²/day throughput keeps plant downtime to a single shift.
Key Benefits
Pure vs Hybrid — Two Chemistries, One Platform
Pure polyurea uses amino-terminal resin — no hydroxyls, no catalyst, maximum humidity tolerance. Hybrid uses a hydroxyl/amino blend with catalyst — extended gel time for detailed geometries, tunable hardness from Shore A80 to A92. Both deliver ≥20 MPa tensile and operate across the same -45°C to 120°C range. Choose pure for speed and chemical resistance. Choose hybrid for tailored hardness and longer working time.
Moisture-Insensitive Cure — No Dew-Point Shutdowns
Polyurea's amine-isocyanate reaction is faster than moisture interference. Unlike polyurethane, which generates CO₂ bubbles and adhesion failures above 75–80% relative humidity, polyurea sprays through high-humidity conditions without pinholes or debonding. Tunnel linings, coastal infrastructure, and underground applications where dew point shifts within a single workday remain operational when polyurethane crews are standing down.
Flame Retardant & Self-Extinguishing
Low flame spread rate with self-extinguishing behavior — a functional safety requirement for tunnels, petrochemical secondary containment, and occupied infrastructure. Combined with zero VOC and 100% solids, this meets the environmental and safety criteria that increasingly govern infrastructure coating specifications worldwide.
≥1000 m² per Day — Throughput That Changes the Economics
Single spray unit with two operators covers ≥1000 m² per shift at specified thickness. Tunnel lining, bridge deck, containment floor — one day, one pass, done. Compare to roller-applied systems requiring multiple coats with drying intervals between each. The labor savings on large-area infrastructure projects are not incremental — they redefine the waterproofing line item in the construction budget.
Technical Specifications
Pure Polyurea (JNC) & Hybrid Polyurea (JNJ) / Type I & II / Spray-Applied Plural-Component System
| Test Item | Unit | Test Method | Requirement | Result / Notes |
|---|---|---|---|---|
| Solid Content | % | — | 100 | 100 |
| Tensile Strength | MPa | — | ≥ 20 | ≥ 20 |
| Elongation at Break | % | — | ≥ 600 | 600+ |
| Tear Strength | N/mm | — | ≥ 45 | ≥ 45 |
| Hardness | Shore A | — | 92 ± 5 | 92 ± 5 |
| Abrasion Resistance | mg (750g/500r) | — | ≤ 50 | ≤ 50 |
| Low Temp Flexibility | °C | — | -35°C — No crack | No crack |
| Operating Temperature | °C | — | -45 to 120 (continuous) | -45 to 120 |
| VOC Content | g/L | — | 0 | 0 |
Swipe to view the full table →
Values shown represent the stated product configuration. Pure and Hybrid formulations have different performance profiles — refer to the Technical Data table below for type-specific values. Gel time, hardness, and elongation can be tuned within formulation limits. Request the corresponding TDS and batch test report before specification.
Technical Specifications — Hybrid Polyurea
| Test Item | Unit | Test Method | Requirement | Result / Notes |
|---|---|---|---|---|
| Solid Content | % | — | ≥ 98 | ≥ 98 |
| Tensile Strength | MPa | — | ≥ 22 | ≥ 22 |
| Elongation at Break | % | — | ≥ 500 | 500+ |
| Tear Strength | kN/m | — | 80 | 80 |
| Hardness | Shore A | — | 80 | 80 |
| Bonding Strength | MPa | — | ≥ 3.34 | 3.34 |
| Water Absorption | % | — | ≤ 0.40 | 0.40 |
| Abrasion Resistance | mg (750g/500r) | — | 25 | 25 |
| Low Temp Flexibility | °C | — | -35°C — No crack | No crack |
| Operating Temperature | °C | — | -45 to 120 (continuous) | -45 to 120 |
| VOC Content | g/L | — | 0 | 0 |
| —— HYBRID POLYUREA —— | — | — | — | — |
| Solid Content | % | — | ≥ 98 | ≥ 98 |
| Tensile Strength | MPa | — | ≥ 22 | ≥ 22 |
| Elongation at Break | % | — | ≥ 500 | 500+ |
| Tear Strength | kN/m | — | 80 | 80 |
| Hardness | Shore A | — | 80 | 80 |
| Bonding Strength | MPa | — | ≥ 3.34 | 3.34 |
| Water Absorption | % | — | ≤ 0.40 | 0.40 |
| Abrasion Resistance | mg (750g/500r) | — | 25 | 25 |
| Low Temp Flexibility | °C | — | -35°C — No crack | No crack |
| Operating Temperature | °C | — | -45 to 120 (continuous) | -45 to 120 |
| VOC Content | g/L | — | 0 | 0 |
Installation Guide
Equipment Is Not Optional — Plural-Component Proportioner Required
Polyurea is not a bucket-and-brush product. It requires a heated, high-pressure plural-component spray system delivering a constant 1:1 volume ratio. A and B components travel through separate heated hoses (55–65°C) and mix only at the impingement tip. The equipment is a capital commitment — factor it into project budgeting. Contractors without plural-component spray capability typically sub-contract the application or lease equipment with manufacturer technical support.
Substrate Preparation — Blast to Profile
Concrete: achieve ICRI CSP 3–5 surface profile by mechanical scarification or abrasive blasting. Remove laitance, oil, and dust. Steel: SSPC-SP 6 commercial blast or SSPC-SP 10 near-white blast. Surface must be dry and free of contaminants. Unlike PU, polyurea is moisture-insensitive during cure — but the substrate-to-coating bond still requires a clean, profiled surface.
Spray Application — Single Pass to Specified Thickness
Set proportioner to 1:1 ratio. Heat both component lines to 55–65°C. Spray in overlapping passes with 50% fan-width overlap. Pure polyurea builds full thickness in one pass — no multiple-coat scheduling. Hybrid can be built in single or multiple passes depending on total DFT. Vertical surfaces: polyurea holds position without sagging, even at 2–3 mm thickness. Verify wet-film thickness with a comb gauge during application.
Cure and Return to Service
Pure: non-flow in 15±2 seconds, surface-dry ≤120 seconds, walkable within minutes. Hybrid: gel ≤40 seconds, surface-dry ≤120 seconds, full cure 24 hours. For both types, foot traffic is acceptable within minutes of application. Vehicular traffic and water immersion: allow full cure before exposure. Rain will not affect uncured polyurea — another operational difference from moisture-sensitive coating systems.
Packaging & OEM
A/B Drum System — 220 kg Each
Component A and B supplied in separate 220 kg metal drums. Each drum labeled with component identity, batch number, and production date. Nitrogen-seal partially used drums after opening — isocyanate in Component A reacts with atmospheric moisture.
Storage — 16°C to 45°C, 6 Months
Store in dry, shaded conditions at 16–45°C. Shelf life: 6 months at 25°C. After expiry, check material before use. Residues in opened drums must be sealed under nitrogen — air exposure degrades the isocyanate component.
OEM / Private Label
Custom drum labeling with your brand and product designation. Formulation tuning available: adjust gel time, hardness, elongation, and tensile strength within chemistry limits. Pure vs Hybrid base selection per your target application. MOQ by formulation.
Export Loading Reference
20FT Container
Approx. 80–100 drums (220 kg each) — varies by pallet configuration
Packaging
Component A and B in separate 220 kg metal drums
Documentation
TDS, MSDS, Packing List, Certificate of Origin
Technical Downloads
Pure Polyurea Technical Data Sheet (TDS)
Ready for PDF Request
Hybrid Polyurea Technical Data Sheet (TDS)
Ready for PDF Request
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Frequently Asked Questions
What's the difference between pure polyurea and hybrid polyurea?
Pure polyurea: Component A is an isocyanate semi-prepolymer. Component B is amino-terminal resin with chain extender — no hydroxyl groups and no catalyst. The amine-isocyanate reaction produces urea linkages that are inherently moisture-insensitive, enabling spray application in high-humidity conditions without pinholes or debonding. Pure achieves ≥600% elongation, ≥20 MPa tensile, and ≥45 N/mm tear strength. Non-flow time at spray temperature (55–65°C): 15±2 seconds. Hybrid polyurea (semi-polyurea): Component B contains a hydroxyl/amino-terminal resin blend and may include a catalyst. This extends gel time (≤40 seconds) and allows hardness tuning from Shore A80 to A92. Hybrid achieves ≥500% elongation and ≥22 MPa tensile. Choose pure for maximum speed and humidity tolerance. Choose hybrid when you need tailored hardness or extended working time for complex geometries.
Do I need special equipment to apply polyurea?
Yes — polyurea requires a heated, high-pressure plural-component spray system. A and B components travel through separate heated hoses (55–65°C) and mix only at the impingement tip of the spray gun. The equipment maintains a precise 1:1 volume ratio. Standard airless sprayers, rollers, and brushes cannot apply polyurea. This is not a product limitation — it's the delivery mechanism that produces second-scale cure speed, 100% solids application with zero shrinkage, and ≥1000 m²/day throughput. Contractors without plural-component equipment typically lease units with manufacturer technical support or sub-contract the application.
How long does polyurea take to cure?
Pure polyurea: non-flow time 15±2 seconds at spray temperature (55–65°C), surface-dry ≤120 seconds, walkable within minutes. Hybrid polyurea: gel time ≤40 seconds, surface-dry ≤120 seconds, full cure in 24 hours. Both types can accept foot traffic within minutes of application — the structure returns to operation within a single shift. For vehicular traffic or water immersion, allow full cure before exposure. Unlike polyurethane coatings that require 12–24 hours between coats with dew-point monitoring, polyurea's cure speed is limited only by the spray equipment throughput, not by ambient conditions.
Can polyurea be applied in wet or humid conditions?
Yes — this is one of polyurea's defining advantages over polyurethane. Polyurea's amine-isocyanate reaction pathway is faster than moisture interference. Polyurethane coatings react with ambient moisture to produce CO₂ gas, creating pinholes and adhesion failures above 75–80% relative humidity. Polyurea sprays through high-humidity environments — tunnels, coastal installations, underground structures — without these defects. There is no dew-point restriction during spray application. The substrate surface itself should be dry and properly prepared, but ambient humidity does not constrain the application window.
What thickness should I specify?
Polyurea builds full thickness in a single spray pass — no multiple coats with drying intervals. Typical specification ranges: 1.5–2.0 mm for bridge deck waterproofing, 2.0–3.0 mm for secondary containment and chemical-resistant liners, 1.0–1.5 mm for tunnel lining and underground waterproofing. Material consumption: approximately 1.1–1.2 kg/m² per millimeter of dry film thickness. Since polyurea is 100% solids, wet-film thickness equals dry-film thickness — what the gauge reads on the spray gun is what remains after cure. Confirm the required DFT against your project specification. Vertical surfaces: polyurea holds position without sagging even at 2–3 mm single-pass thickness.
Is polyurea UV-resistant?
Standard polyurea is aromatic — it has excellent mechanical properties but will gradually discolor and chalk under prolonged direct UV exposure, though mechanical performance is largely retained. For applications requiring color stability and gloss retention under full sun exposure — stadium bleachers, exposed bridge decks, architectural waterproofing — specify an aliphatic polyurea topcoat or an aliphatic-base formulation. The aliphatic variant maintains appearance and surface integrity under UV, referenced in industry standards for exposed infrastructure coatings. For buried, lined, or top-coated applications, standard aromatic polyurea performs without UV degradation concerns.
What are the fire safety properties?
Polyurea exhibits low flame spread rate and self-extinguishing behavior — when the external flame source is removed, the coating stops burning. Combined with zero VOC (no flammable solvent content) and 100% solids, this meets the fire safety criteria increasingly required for tunnel waterproofing, petrochemical secondary containment, and occupied infrastructure. Polyurea does not contribute fuel load in a fire scenario, unlike solvent-based coating systems. If your project requires a specific fire-resistance rating (e.g., ASTM E84 Class A), confirm with our technical team — formulation adjustments and testing can support compliance documentation.
What certifications and standards does polyurea comply with?
Applicable standards and test methods depend on the formulation, application, and destination market. Potable-water, infrastructure, and bridge-deck projects may require specific documentation or third-party testing. Contact our technical team with your jurisdiction and application so we can confirm the applicable requirements and available test documentation.
How do OEM and private label orders work?
Your brand and product designation on both Component A and B drums. Formulation parameters tunable within chemistry limits: gel time (faster for pure, extended for hybrid), hardness (Shore A80–A92), elongation (target 500–600%+), and tensile strength (target 20–22 MPa+). Base chemistry selection — pure or hybrid — determined by your target application profile. Nitrogen-sealed packaging per export requirements. MOQ by formulation. Send your target specification for a sample batch and firm quotation.
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