Mining chemical reinforcement materials

1.double-component special polyurethane foam material. 2.easy to operate. Duration is short.

Mining chemical reinforcement materials are our self-developed materials and they have a completely intellectual property. This product is a double-component special polyurethane foam material. According to the requirements of coal production environments it has been added flame-retardant and antistatic materials. The product is mainly used in coal and rock reinforcement, the close of filling, plugging and pumping gas hole. Its construction process is simple, and easy to operate. Duration is short. Before foaming, the material viscosity is small. It can be penetrated into a small gap well. Its state turns from liquid into solid after mixing and foaming, and the volume increases. It has a high compressive strength and good flexibility, and able to withstand a range of ground movement.

Technical Index

item	Part A	Part B
Appearance	Transparent liquid	Puce liquid
density(g/cm3 ,25°C)	1.02±0.005	1.22±0.005
viscosity(mPa.S,25°C)	190±20	220±20
Mixing Ratio(volume ratio)	1	1
Storage period uncer2°C(month)	6	6
Storage Temperature(°C)	5~25	5~25
Packed weight(kg)	25	30

When Part A and Part B are mixed, it happens polymerization reaction. The index is as follows.

Application temperature	15°C	25°C
Foam starting time(s)	50~70	30~60
Foam ending time(s)	70~90	50~80
Expansion ratio	1~6
Compressive strength(MPa)	>35	>35
Adhesion	>5	>5
Surface resistance(Ω)	<3.0×108
Fire resistance	Alcohol flaming torch burning time less than 3 seconds

Main application range:

reinforce the top parts between working face and slot.Prevent thick coal wall from serious spalling.Prevent and control roof fall caused by geological structure on working face extracting.Maintain the top board directly.Applicable for difficult roadways extracting caused by coal spalling.Applicable for obsolete roadways on working face extracting.Block rock fractures and the leakage of concrete wellbore.Applicable for the seal of gas drainage holes

Usage and operation:

Special double-component grouting pump operation is needed on underground grouting. Inject part A and Part B by 1:1 of the volume.

Storage and transportation

A, B component are installed in 25L plastic drum respectively. Weight are 25 kg and 35 kg.The product should be stored in a dry warehouse. Storage temperature is 5~25°C. Storage period is 6 months.In the process of transportation, move and put lightly. No insolating in the sunlight and rain.

Mining chemical reinforcement materials