CN103253890A - Improved spraying fire preventing and extinguishing material for coal mine and preparation method thereof - Google Patents
Improved spraying fire preventing and extinguishing material for coal mine and preparation method thereof Download PDFInfo
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- CN103253890A CN103253890A CN2013101525479A CN201310152547A CN103253890A CN 103253890 A CN103253890 A CN 103253890A CN 2013101525479 A CN2013101525479 A CN 2013101525479A CN 201310152547 A CN201310152547 A CN 201310152547A CN 103253890 A CN103253890 A CN 103253890A
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- fire resistant
- resistant fluid
- tap water
- mineral aggregate
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Abstract
The invention provides an improved spraying fire preventing and extinguishing material for coal mine and a preparation method of the material, and belongs to the technical field of fire preventing and extinguishing material. The material comprises 60 to 80% of flame retardant solution and 20 to 40% of inorganic aggregate, which are mixed with each other and stirred uniformly, wherein the flame retardant solution is obtained by carrying out a reaction on 4 to 8% of polyvinyl alcohol, 1 to 5% of phosphoric acid, 1 to 5% of urea, 10 to 30% of white emulsion and tap water; the inorganic aggregate is one or combinations of Kaolin, talcum powder and mica powder. The material provided by the invention has excellent adhesive quantity with coal body, the tensile strength of a film after film formation is great; and furthermore, the material has excellent insulation and low cost.
Description
Technical field
The present invention relates to a kind of improved colliery with spraying fireproof material and preparation method thereof, belong to the fireproof material technical field.
Background technology
Coal in China is occupied an leading position in the China energy general layout, probably account for 94%, if keep annual 8.9% speedup, the year two thousand twenty will account for 1/2 of world's consumption, and therefore, coal has very big strategic importance to China, bring huge interests to the country and people, yet the coal mining accident of China but is more than 4 times of national colliery total toll of mainly mining in the world, is one of country that coal mining accident is the most serious in the world, and these accidents have been brought huge body and mind injury and menticide to people.In coal mining accident, the most serious with gas accident especially, account for more than 30% of the total accident in colliery.Behind the seam mining, the air quantity exchange between ground and the intake and between intake and the return aircourse, between return aircourse and the ground becomes big gradually, leaks out seriously in the worked-out section.The increase of air quantity has brought the hidden danger of gas explosion and spontaneous combustion of coal seam.In case because air admission coal body inside, the spontaneous compound a large amount of heats of emitting of coal oxygen, this heat are gathered under certain accumulation of heat condition, when the heat that gathers can satisfy the needs of coal spontaneous combustion process development, the coal body temperature constantly rises, and finally causes spontaneous combustion of coal.Therefore, ribbing, isolation worked-out section and face up and down trough are lost in two ends up and down, worked-out section leak stopping wind is the key of fully mechanized coal face prevention of Spontaneous Ignition to handle the worked-out section.Spraying leak stopping preventing and extinguishing fire technology is very fast in development in recent years, now the no coal column fully mechanized coal face widespread usage of spontaneous fire is being arranged.At face up and down trough, stop adopting near the line and the place of leaking out serious and adopt spraying leakage stopping technology application property good, leak stopping wind energy power is strong, can obviously reduce the hidden danger of spontaneous combustion of coal seam and gas explosion.Advantages such as be added on phosphorus-nitrogen flame retardant in the polyvinyl alcohol and mix the spray material that obtains with white glue with vinyl and have environmental protection, unharmful substance is emitted, and film forming caudacoria compactness is good, and leak stopping is strong, resistanceization is fire-retardant.But also exist the spray material viscosity low, poor with the attached wall of coal body, problem such as tensile strength is low after the film forming.
Summary of the invention
Purpose of the present invention is intended to overcome above shortcoming, proposes that a kind of viscosity is suitable, big with good, the film forming caudacoria tensile strength of coal body tack, good insulating and cheap colliery be with the spraying fireproof material.
The present invention is achieved through the following technical solutions:
A kind of novel colliery is with the spraying fireproof material, is made up of mutual mixing and stir fire resistant fluid and mineral aggregate, and wherein, each compositions in weight percentage is: the fire resistant fluid of 60-80%, the mineral aggregate of 20-40%; Described fire resistant fluid quality percentage composition: 4%-8% polyvinyl alcohol, 1%-5% phosphoric acid, 1%-5% urea, 10%-30% white glue with vinyl and tap water reaction gained; Described mineral aggregate is one or more arbitrary combination in kaolin, talcum powder, the mica powder.
Fire resistant fluid quality percentage composition described above is preferred: 6% polyvinyl alcohol, 2% phosphoric acid, 2% urea, 20% white glue with vinyl and 70% tap water reaction gained.
A kind of novel colliery preparation method of spraying fireproof material, concrete steps comprise:
A) under water-bath, polyvinyl alcohol is joined abundant stirring and dissolving in the tap water, temperature is controlled at 90 ℃, stirs 5h;
B) phosphoric acid and urea are joined behind the mixed dissolution in tap water in the solution that a) goes on foot gained, under 85 ℃ bath temperature, react reaction times 5h;
C) react completely after, add white glue with vinyl when treating the solution cool to room temperature and be stirred well to evenly;
D) get and fully stir 2h in the fire resistant fluid that mineral aggregate joins the step c) gained, wherein fire resistant fluid accounts for mass ratio 60-80%, and mineral aggregate accounts for mass ratio 20-40%.
A kind of novel colliery of the present invention is with spraying fireproof material, and comparing fire resistant fluid has following remarkable advantages:
1. improved the viscosity of colloid under the condition that does not influence spraying coating process, increased the sticking power of fireproof material and coal body, the film thickness that obtains after the spraying has tangible increase;
2. improve the tensile strength of material, and shortened the set time of material;
3. improved the flame retardant properties of material;
4. owing to inorganic powder itself, the adding of powder has improved insulativity, ageing resistance, durability of coating energy and the oilness of fireproof material
5. the adding of aggregate has reduced the cost of material.
Embodiment
Embodiment 1
1) under water-bath, the 6g polyvinyl alcohol is joined abundant stirring and dissolving in the 20g tap water, temperature is controlled at 90 ℃, stirs 5h;
2) 2g phosphoric acid and 2g urea are slowly joined 1 behind the mixed dissolution in the 10g tap water) go on foot in the solution of gained, dropwise back adding 40g tap water and under 85 ℃ bath temperature, react reaction times 5h;
3) react completely after, add the 20g white glue with vinyl when treating the solution cool to room temperature and be stirred well to evenly;
4) get and fully stir 2h in the fire resistant fluid that 20g talcum powder, 10g kaolin and 10g mica powder join the step 3) gained.
The fireproof material of gained once sprays thickness can reach 0.5mm, can put out certainly behind the 5s after lighting with spirit lamp, and the tensile strength of fire retardant material reaches 8.3MPa, and surface resistivity is 9.2 * 10
7Ω.
Embodiment 2
1) under water-bath, the 6g polyvinyl alcohol is joined abundant stirring and dissolving in the 20g tap water, temperature is controlled at 90 ℃, stirs 5h;
2) 2g phosphoric acid and 2g urea are slowly joined 1 behind the mixed dissolution in the 10g tap water) go on foot in the solution of gained, dropwise back adding 40g tap water and under 85 ℃ bath temperature, react reaction times 5h;
3) react completely after, add the 20g white glue with vinyl when treating the solution cool to room temperature and be stirred well to evenly;
4) get and fully stir 2h in the fire resistant fluid that 10g talcum powder, 10g kaolin and 10g mica powder join the step 3) gained.
The fireproof material of gained once sprays thickness can reach 0.5mm, can put out certainly behind the 4s after lighting with spirit lamp, and the tensile strength of fire retardant material reaches 7MPa, surface resistivity 1.1 * 10
8Ω.
Claims (3)
1. a novel colliery is characterized in that with the spraying fireproof material, is made up of mutual mixing and stir fire resistant fluid and mineral aggregate, and wherein, each compositions in weight percentage is: the fire resistant fluid of 60-80%, the mineral aggregate of 20-40%; Described fire resistant fluid quality percentage composition: 4%-8% polyvinyl alcohol, 1%-5% phosphoric acid, 1%-5% urea, 10%-30% white glue with vinyl and tap water reaction gained; Described mineral aggregate is one or more arbitrary combination in kaolin, talcum powder, the mica powder.
According to a kind of novel colliery of claim 1 with the spraying fireproof material, it is characterized in that the percentage composition of fire resistant fluid quality is preferred: 6% polyvinyl alcohol, 2% phosphoric acid, 2% urea, 20% white glue with vinyl and 70% tap water reaction gained.
3. the novel colliery of preparation claim 1 is characterized in that with the method for spraying fireproof material, may further comprise the steps:
A) under water-bath, polyvinyl alcohol is joined abundant stirring and dissolving in the tap water, temperature is controlled at 90 ℃, stirs 5h;
B) phosphoric acid and urea are joined behind the mixed dissolution in tap water in the solution that a) goes on foot gained, under 85 ℃ bath temperature, react reaction times 5h;
C) react completely after, add white glue with vinyl when treating the solution cool to room temperature and be stirred well to evenly;
D) get and fully stir 2h in the fire resistant fluid that mineral aggregate joins the step c) gained, wherein fire resistant fluid accounts for mass ratio 60-80%, and mineral aggregate accounts for mass ratio 20-40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310152547.9A CN103253890B (en) | 2013-04-27 | 2013-04-27 | Improved spraying fire preventing and extinguishing material for coal mine and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310152547.9A CN103253890B (en) | 2013-04-27 | 2013-04-27 | Improved spraying fire preventing and extinguishing material for coal mine and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103253890A true CN103253890A (en) | 2013-08-21 |
| CN103253890B CN103253890B (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310152547.9A Expired - Fee Related CN103253890B (en) | 2013-04-27 | 2013-04-27 | Improved spraying fire preventing and extinguishing material for coal mine and preparation method thereof |
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| CN (1) | CN103253890B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101543672A (en) * | 2009-03-15 | 2009-09-30 | 徐志毅 | Extinguish material, preparation method and application thereof |
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2013
- 2013-04-27 CN CN201310152547.9A patent/CN103253890B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101543672A (en) * | 2009-03-15 | 2009-09-30 | 徐志毅 | Extinguish material, preparation method and application thereof |
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| CN103253890B (en) | 2014-12-31 |
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Granted publication date: 20141231 Termination date: 20170427 |
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| CF01 | Termination of patent right due to non-payment of annual fee |