Ammonia-free gel

Abstract

The invention discloses an ammonia-free gel. The ammonia-free gel is rapidly prepared by adding, by weight, 10 to 20 parts of water and 2 parts of sodium silicate into 1 part of a powder agent, and is used for fire prevention. The powder agent is composed of following ingredients, by weight, 30% of sodium bicarbonate, 20% of magnesium sulfate, 40% of copper sulphate, 5% of cellulose, 3% of bentonite, and 2% of a thickening agent. The thickening agent is a cellulose thickening agent; and reaction is carried out at normal temperature. It is confirmed by experiment research and cost analysis that, compared with conventional gel in the market, a preparation method of the ammonia-free gel is simple; gelation time is shorter; raw materials are easily available; water retaining rate is high; the ammonia-free gel is friendly to the environment, is nontoxic, is harmless, is odorless, possesses no corrosivity, and improved fire resistance and heat stability, and can be commonly used for coal mine fire extinguishing.

Description

technical field [0001] The invention relates to a gel, in particular to an ammonia-free gel used for fire prevention in coal mines. Background technique [0002] Generally speaking, the three elements of combustion are combustibles, oxygen and ignition point, all of which are indispensable. To extinguish a flame, at least one of the three elements must be removed, that is, removal of combustibles, isolation of air, or cooling. As we all know, fire brings great harm to people's lives and property safety, so it is very important to improve fire extinguishing technology. An important item in fire extinguishing technology is the performance of fire extinguishing materials. At present, there are many fire extinguishing agents used in daily life and production process, with different properties. According to different fire extinguishing mechanisms, fire extinguishing agents can be roughly divided into two categories: physical fire extinguishing agents and chemical fire extingui...

AI Technical Summary

Problems solved by technology

Ammonia gels on the market have the disadvantages of ammonia gas release, strong corrosion, and high price. A large amount of ammonia gas is released during the gelation process, which pollutes the working environment during use and affects the health of workers. It is also expensive and troublesome to purchase.

Moreover, although ordinary gel has a high water solidification rate and has good fire prevention and extinguishing effect, it is easy to lose water and shrink at high temperature, which affects its filling effect on coal seams.