Polyurethane materials for water blockage in coal mines
Product Description:
The polyurethane material for water blockade in coal mine is composed of component A and component B, and component A is mainly a low-viscosity, high-permeability organic polymer mixture composed of polyether polyol, flame retardant and catalyst; Part B is mainly a polymer mixture composed of isocyanates and flame retardants. The high adhesion and good mechanical and physical properties of the product ensure that it has a high degree of adhesion with the coal and rock mass, and can play a fast and effective plugging effect on the water inrush cracks; Good flexibility allows it to withstand the stress action of formation movement; And it has strong impermeability, anti-wear, impact resistance and anti-aging performance. During construction, it is necessary to use coal mine polymer materials and grouting devices to mix A and B components according to the volume ratio of 1:1. After grouting, it can achieve the purpose of stabilizing the formation for a long time and blocking the water inrush channel.
Specifications and models:
Model: DS PU
Meaning: DS stands for use, blocking water for coal and rock mass;
PU stands for material property and is a polyurethane material.
Technical Indicators:
|
Serial number |
Project |
Index |
|
1 |
Curing time，s |
45±15 |
|
2 |
Maximum reaction temperature，℃ |
≤140 |
|
3 |
Expansion multiple, multiple |
≥1.0 |
|
4 |
Oxygen index，% |
≥28 |
|
5 |
Anti-aging properties |
There is no change in the surface, and the compressive strength is lost≤5% |
|
6 |
compressive strength，MPa |
≥50 |
|
7 |
tensile strength |
≥20 |
|
8 |
Shear strength |
≥20 |
|
When the pressure is 40MPa, the shape of the test block becomes (45±10)%。 |
||
Performance characteristics:
Polyurethane materials for water blockage in coal mines have the following characteristics:
(1) Low viscosity and strong permeability;
(2) High strength, good toughness and deformability;
(3) Swelling in water, strong and durable adhesion, fast, simple and convenient construction; (4) It has strong impermeability, anti-wear, impact resistance and anti-aging performance.
Main uses:
The A and B components of polyurethane materials for water shut-off in coal mines are mainly used for water shut-off in coal mine roadway projects, and the materials can quickly and effectively plug water inrush cracks. It is mainly used in the following aspects:
◎ Water blocking in coal mine roadway engineering;
◎ Waterproof coal pillar water blockage;
◎ Dam leakage water treatment and structural reinforcement;
◎ Tunnel karst, fissure water plugging, tunnel seepage and leakage treatment.
packaging:
Packing: Sealed packaging in plastic drums
Packing: 50kg/set, 24 kg for A component, 26 kg for B component.
After-sales service:
The company has an after-sales service department, which is responsible for collecting user feedback on the use of information, guiding users to use correctly, and solving problems in the process of use.
