Traffic tunnel special fire retardant polyurea coating

Product Item : PS500B
Category： Spray Polyurea Coatings
PS500B is a 100% solid aromatic polyurea elastomer designed for tunnel fire protection. It offers exceptional physical properties and is self-extinguishing upon flame removal. Its inherent non-flammability, enhanced with flame retardants, provides a high fire resistance rating suitable for tunnels and other demanding environments.
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1.Description:
PS500B tunnel special fire retardant polyurea is a 100% solid content aromatic polyurea elastomer. It not only exhibits excellent physical properties characteristic of polyurea materials, but also possesses self-extinguishing behaviour upon removal from the flame. While polyurea itself is inherently non-flammable, the incorporation of flame retardants further enhances its fire resistance rating, making it particularly suitable for applications with stringent fire safety requirements such as tunnels. Additionally, it complies with environmental and safety standards.
2.Features:
● Fire retardant and flame resistant;
● Free from any thinner, environmentally friendly;
● Exhibits elongation and high flexibility, capable of adapting to minor cracking and slight deformation;
● Good aging resistance;
● Fast curing, suitable for spraying on any surface, slope, or vertical surface;
● Convenient application with spray coating.

3.Performance:

Item	Part A	Part B
Appearance	Pale yellow liquid	Adjustable color
Specific gravity	1.15	1.2
Viscosity (cps) @25℃	700	680
Solid content (%)	100	100
Mix ratio (by volume)	1	1
Gel time (second) @25℃	4-6
Tack-Free Time (second)	15-40
Theoretical Coverage (dft)	1.08kg/㎡ Film thickness 1mm

Physical properties

Item	Test standard	Result
Hardness (Shore A)	ASTM D-2240	92
Elongation at Break（%）	ASTM D-412	450
Tensile strength（Mpa）	ASTM D-412	16
Tear strength (kN/m)	ASTM D-624	62
Impermeability(0.3Mpa/30min)	HG/T 3831-2006	impermeable
Wearable（750g/500r）/mg	HG/T 3831-2006	4.6
Adhesive strength（Mpa）concrete base	HG/T 3831-2006	3
Adhesive strength（Mpa) steel base	HG/T 3831-2006	11
Density（g/cm³）	GB/T 6750-2007	1.1
Cathodic disbondment [1.5v,(65±5)℃，48h]	HG/T 3831-2006	≤15mm

Chemical resistance

Acid resistance 10%H₂SO₄ or 10%HCI,30d	No rust, no bubbles, no peel off
Alkali resistance 10% NaOH, 30d	No rust, no bubbles, no peel off
Salt resistance 30g/L,30d	No rust, no bubbles, no peel off
Salt spray resistance, 2000h	No rust, no bubbles, no peel off
Oil resistance 0# diesel, crude,30d	No rust, no bubbles, no peel off

(For reference: the above data is acquired based on GB / T9274-1988 test standard. Pay attention to the

influence of ventilation, splash and spillage. Independent immersion testing is recommended

if requires other specific data)

4.Applications:

Fire retardant anticorrosion waterproof protection of railways, road, urban subway and other transportation facilities.
5.Package:
Two-component, A component 220KG / 200L barrel, B component 210KG / 200L barrel.
6.Storage/Shelf Life:
Ideal storage condition is 5-35 ℃ in cool and dry place, avoid direct sunlight. / Nine months