JTF-II Purite Fire Prevention and Extinguishing Material

Product Introduction

Purite-type fire prevention and extinguishing new technology was developed to solve the problems of spontaneous combustion of coal in local areas such as roadways and top of supports, as well as air leakage in upper and lower corner seals. It consists of two components, Material A and Material B, mixed in a 1:1 volume ratio. After chemical foaming, it forms a chemical foam body with an expansion coefficient of more than 10 times. The formation process does not generate heat, fundamentally solving the problem of high heat generation during the reaction of traditional polyurethane filling materials.

After foaming, the product appears as foam with low initial viscosity. When injected into broken coal-rock voids or goaf areas, it has good diffusion and penetration properties. The final cured foam can form a dense consolidated body with the coal-rock mass. The cured foam contains a certain amount of moisture, providing good sealing and heat absorption cooling performance.

Product Features

(1) Room temperature foaming and curing: Uses innovative foaming technology; both foaming and curing processes do not release heat or emit heat to the surrounding environment;

(2) Excellent diffusion performance: Initially forms an emulsion-like foam with good fluidity and diffusion, achieving ideal filling effect within broken coal-rock mass. After curing, it can fully fill surrounding voids and coal-rock fissures;

(3) Flame retardant and good thermal stability: The cured foam does not collapse, burn, or support combustion under continuous exposure to high-temperature flames above 800°C, representing the highest level of flame retardancy;

(4) Excellent sealing performance: The cured foam has a high closed-cell rate and low air permeability. Additionally, the cured foam consolidates with the coal-rock mass, effectively filling voids and fissures, providing excellent air leakage sealing performance;

(5) Antistatic performance: The cured foam contains a certain amount of moisture, providing natural antistatic properties.

Fire Prevention and Extinguishing Performance

(1) Room temperature foaming and curing

The foaming and curing processes do not generate heat (tested during winter), and the temperature before and after reaction is comparable to the ambient temperature.

(2) Diffusion performance in goaf areas

Initially forms an emulsion-like foam with good diffusion, achieving ideal filling effect within broken coal-rock mass. After chemical reaction, it can fully fill surrounding voids and coal-rock fissures.

(3) Flame retardancy and thermal stability

The cured foam has good flame retardancy, does not collapse, burn, or support combustion under high-temperature flames exceeding 1000°C.

(4) Free space stacking performance

The free stacking angle can reach 45°, facilitating filling of large spaces, avoiding inability to stack at high positions in open spaces, and reducing material waste.

Application Locations

1. Filling and sealing of air leakage channels in old upper and lower corner goaf areas;
2. Filling and sealing of air leakage channels in shallow goaf areas between and behind working face supports;
3. Filling and sealing of abandoned old roadways and closed roadways;
4. Prevention and control of spontaneous combustion of coal in local areas such as roadways and top of supports;
5. Prevention and control of spontaneous combustion fires in goaf areas and behind supports;
6. Construction of temporary fireproof sealed walls or rapid sealed walls;
7. Sealing of toxic and harmful gases underground.

Application Process

Materials A and B are added into the Purite preparation system through special equipment according to a 1:1 volume ratio to produce Purite.

Technical Parameters