CN1594424A - Loose coal and rock foaming urea-formaldehyde resin cementing material and method for preparing same - Google Patents
Loose coal and rock foaming urea-formaldehyde resin cementing material and method for preparing same Download PDFInfo
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- CN1594424A CN1594424A CN 200410041042 CN200410041042A CN1594424A CN 1594424 A CN1594424 A CN 1594424A CN 200410041042 CN200410041042 CN 200410041042 CN 200410041042 A CN200410041042 A CN 200410041042A CN 1594424 A CN1594424 A CN 1594424A
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- urea
- formaldehyde resin
- foaming
- loose coal
- cementing material
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
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Abstract
The invention discloses a loose coal and rock foaming urea-formaldehyde resin cementing material and method for preparing same, wherein the material comprises urea aldehyde resin, polyacrylates, organic macromolecular acid, carbonates, silicon oxide and inorganic ammonium salt. The invention can realize the normal temperature chemical foaming and solidifying for the urea aldehyde resin.
Description
Technical field:
The present invention relates to the foamex cementing material, a kind of material that in colliery and the relevant industries loose coal rock mass is carried out the cementation knot that is applicable to of more specifically saying so.
Background technology:
The exploitation in colliery need be carried out the cutting and the maintenance of tunnel chamber, and under action of underground, roadway surrounding rock especially loose coal rock mass is very easily taken out and emitted, and brings hidden danger for supporting safety.
Maintenance for the safe loose coal rock mass of influence is reinforced, and except that normal roadway support, the existing methods one that adopt are the pressure injection hydraulic cementing materials more, add water glass etc. as cement, cement; The 2nd, pressure injection polyurethanes matrix material.Generally speaking, hydraulic cementing materials belongs to the non-adhesive material, though cohesiveness is relatively poor between itself and the coal and rock, is a kind of filling parcel cementing material.When having big sky, crack in the loose coal rock mass, it is obvious that fixed reinforcement effect is wrapped up in its filling; But when loose coal rock mass when being main with the crack, especially cutting under the state of pressure break crack, its infiltration diffustivity is relatively poor, is difficult to form effective filling and wraps up fixed reinforcing.The polyurethanes matrix material is generally water-based material, and the infiltration diffustivity is good, but consolidation strength is lower under foamed state.Simultaneously, pressure injection polyurethanes matrix material needs special-purpose biliquid pump.Material cost, equipment input cost are all higher, are difficult to apply.
Summary of the invention:
The present invention is for avoiding above-mentioned existing in prior technology weak point, a kind of loose coal rock mass foaming urea-formaldehyde resin cementing material and preparation method thereof being provided.Its material is the normal temperature chemical foaming, has good penetration filling and adhesive solidification performance for the loose coal rock mass.
Technical scheme of the present invention is as follows:
The foam characteristics of urea-formaldehyde resin cementing material of the present invention are that material by weight consists of:
Urea-formaldehyde resin 80-90, organic polymer acid 2-15,
Carbonate 2-10, Si oxide 5-10,
Inorganic ammonium salt 2-5, polyacrylate 3～20,
Water 5-20.
In the above-mentioned composition, urea-formaldehyde resin is the main base-material of cementing material.
Organic polymer acid is urea-formaldehyde resin foaming material and solidify material.
Carbonate is compaction material, also is foam material simultaneously, can improve the Flame Retardancy energy.
Si oxide can improve the Flame Retardancy energy as compaction material.
Inorganic ammonium salt is the curing reaction of urea formaldehyde resin material.
Water is the solvent of viscosity conditioning agent and organic polymer acid, inorganic ammonium salt.
Polyacrylate is a urea-formaldehyde resin modified crosslinking material.
The foaming of urea-formaldehyde resin is to utilize organic polymer acid of adding and carbonic acid gas (CO2) gas release that carbonate reaction generates to form among the present invention, and urea-formaldehyde resin is finished the modified crosslinking foamed solidification by adding polyacrylate under organic polymer acid and the effect of inorganic ammonium salt solidify material.
The characteristics of material preparation method of the present invention are to finish as follows at normal temperatures:
1, it is standby to take by weighing each material by the required amount of proportioning.
2, get urea-formaldehyde resin, add polyacrylate earlier,, stir and make its dissolving again to wherein adding inorganic ammonium salt.
3, add Si oxide, stirring makes it even.
4, add carbonate, stirring makes it even.
5, add organic polymer acid, stir the foaming infusion and get final product.
Compared with the prior art, the beneficial effect of material of the present invention is embodied in:
1, material of the present invention has realized that by the formulating of recipe of urea-formaldehyde resin urea-formaldehyde resin normal temperature chemical foaming solidifies, adjustable curing speed, and cured body intensity height, resistance to compression is more than 5Mpa; Stress-strain in cross-linking modified foaming elimination resinite solidification process has perviousness and the affine cohesiveness good with coal and rock.
2, the foam expansion of material of the present invention can reach more than the 3-5, can effectively finish infiltration filling of loose coal rock mass and bonding, helps the infiltration bonding that expands in the crack simultaneously.
3, material of the present invention is the water-based matrix material, and viscosity is adjustable, good penetrability.
4, material injection pump adaptability of the present invention is strong, the material pumping is good, and material cost and facility investment are low, are easy to apply.
Embodiment:
The selection of each constituent in the material:
Urea-formaldehyde resin is the ambient cure urea-formaldehyde resin, organic polymer acid is citric acid, carbonate is magnesium, aluminium, iron carbonate or is the mixture of three's equivalent, Si oxide is the powdery porous silica, specific surface area 16～55m2/g, fineness is 180 orders, inorganic ammonium salt is ammonium sulfate or ammonium chloride, polyacrylate be molecular weight at 4～600 ten thousand sodium polyacrylates, water is normality water.
Material by weight consists of:
Urea-formaldehyde resin 80-90, organic polymer acid 2-15,
Carbonate 2-10, Si oxide 5-10,
Inorganic ammonium salt 2-5, polyacrylate 3～20,
Water 5-20.
The following by weight tabular of the concrete proportioning of material shows in the present embodiment:
| Sequence number | Urea-formaldehyde resin | Sodium polyacrylate | Inorganic ammonium salt (ammonium sulfate or ammonium chloride) | Carbonate (being the mixture of magnesium, aluminium, iron carbonate or its three's equivalent) | Organic high son acid (citric acid) | Si oxide (powdery porous silica) | Water |
| ?1 | ?90 | ?15-20 | ?3-5 | ?6-8 | ?8-10 | ?8-10 | ?15-20 |
| ?2 | ?85 | ?5-10 | ?4 | ?5 | ?7 | ?8 | ?5-10 |
| ?3 | ?80 | ?7 | ?2-5 | ?10 | ?12 | ?10 | ?12 |
Each listed assembly square bar material can realize that all foaming at normal temp solidifies in the table.
Preparation process in the present embodiment is as follows:
A, to take by weighing each material by the required amount of proportioning standby;
B, get urea-formaldehyde resin, at first to wherein adding polyacrylate, stir make its dissolving after, to wherein adding inorganic ammonium salt, stir again;
C, adding Si oxide, stirring makes it even;
D, adding carbonate, stirring makes it even;
E, the acid of adding organic polymer are stirred and are made the volume of material increase, when beginning to expand, get final product infusion, infusion pressure＞2Mpa.
In above-mentioned steps,, can add an amount of water, to increase its flowability and diffustivity if too viscid phenomenon of material occurs.
In order to improve the foamed solidification effect, in above-mentioned steps b and e, can with inorganic ammonium salt and organic polymer acid before adding, at first be dissolved with an amount of water.
For above step e, after the material foaming,, should within 15 minutes, finish infusion for guaranteeing its flowability.
More than each step all finish at normal temperatures.
Claims (6)
1, loose coal rock mass foaming urea-formaldehyde resin cementing material is characterized in that material by weight consists of:
Urea-formaldehyde resin 80-90, organic polymer acid 2-15,
Carbonate 2-10, Si oxide 5-10,
Inorganic ammonium salt 2-5, polyacrylate 3～20,
Water 5-20.
2, loose coal rock mass foaming urea-formaldehyde resin cementing material according to claim 1, it is characterized in that described urea-formaldehyde resin is the ambient cure urea-formaldehyde resin, organic polymer acid is citric acid, carbonate is magnesium, aluminium, iron carbonate or its mixture, Si oxide is the powdery porous silica, inorganic ammonium salt is ammonium sulfate or ammonium chloride, and polyacrylate is that molecular weight is at 4～600 ten thousand sodium polyacrylates.
3, loose coal rock mass according to claim 2 foaming urea-formaldehyde resin cementing material is characterized in that described carbonate is the mixture that magnesium, aluminium, iron carbonate by equivalent constitute.
4, loose coal rock mass according to claim 2 foaming urea-formaldehyde resin cementing material is characterized in that the specific surface area 16～55m of described powdery porous silica
2/ g, fineness is 180 orders.
5, the preparation method of the described loose coal rock mass foaming of a kind of claim 1 urea-formaldehyde resin cementing material is characterized in that finishing as follows:
A, to take by weighing each material by the required amount of proportioning standby;
B, get urea-formaldehyde resin, add polyacrylate earlier,, stir and make its dissolving again to wherein adding inorganic ammonium salt;
C, adding Si oxide, stirring makes it even;
D, adding carbonate, stirring makes it even;
E, the acid of adding organic polymer are stirred the foaming infusion and are got final product.
6, the preparation method of loose coal rock mass according to claim 5 foaming urea-formaldehyde resin cementing material is characterized in that in described step b and e, and inorganic ammonium salt and organic polymer acid before adding, are at first dissolved with an amount of water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410041042 CN1241985C (en) | 2004-06-17 | 2004-06-17 | Loose coal and rock foaming urea-formaldehyde resin cementing material and method for preparing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410041042 CN1241985C (en) | 2004-06-17 | 2004-06-17 | Loose coal and rock foaming urea-formaldehyde resin cementing material and method for preparing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1594424A true CN1594424A (en) | 2005-03-16 |
| CN1241985C CN1241985C (en) | 2006-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410041042 Expired - Fee Related CN1241985C (en) | 2004-06-17 | 2004-06-17 | Loose coal and rock foaming urea-formaldehyde resin cementing material and method for preparing same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101220172B (en) * | 2007-12-29 | 2011-04-06 | 于广 | Urea formaldehyde condensate foam for thermal insulation of building and method for producing the same |
| CN103160075A (en) * | 2013-04-03 | 2013-06-19 | 巴斯夫浩珂矿业化学（中国）有限公司 | Urea resin injecting paste material for reinforcing coal body |
| CN105440575A (en) * | 2015-12-28 | 2016-03-30 | 东北林业大学 | Strength/toughness-modified urea formaldehyde resin foam thermal-insulation material and preparation method thereof |
-
2004
- 2004-06-17 CN CN 200410041042 patent/CN1241985C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101220172B (en) * | 2007-12-29 | 2011-04-06 | 于广 | Urea formaldehyde condensate foam for thermal insulation of building and method for producing the same |
| CN103160075A (en) * | 2013-04-03 | 2013-06-19 | 巴斯夫浩珂矿业化学（中国）有限公司 | Urea resin injecting paste material for reinforcing coal body |
| CN105440575A (en) * | 2015-12-28 | 2016-03-30 | 东北林业大学 | Strength/toughness-modified urea formaldehyde resin foam thermal-insulation material and preparation method thereof |
| CN105440575B (en) * | 2015-12-28 | 2019-02-19 | 东北林业大学 | Strengthening and Toughening modified urea-formaldehyde resin cellular insulant and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1241985C (en) | 2006-02-15 |
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Granted publication date: 20060215 Termination date: 20120617 |