CN105367034A - Magnesium oxysulfate board modifying agent and using method thereof - Google Patents
Magnesium oxysulfate board modifying agent and using method thereof Download PDFInfo
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- CN105367034A CN105367034A CN201510932948.5A CN201510932948A CN105367034A CN 105367034 A CN105367034 A CN 105367034A CN 201510932948 A CN201510932948 A CN 201510932948A CN 105367034 A CN105367034 A CN 105367034A
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- correcting agent
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- gelling material
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Abstract
The invention relates to a building material modifying agent, a formula of a magnesium oxysulfate board modifying agent, a preparing method and a using method, and provides a magnesium oxysulfate cementitious material modifying agent. The modifying agent for the magnesium oxysulfate cementitious material enables the structure of the cementing material to be more stable, treatment reaction time is shortened, the coagulating effect is improved, the strength of a board is improved, and the waterproof performance is improved.
Description
Technical field
The present invention relates to a kind of properties-correcting agent of material of construction, espespecially a kind of properties-correcting agent for magnesium oxysulfide sheet material and preparation thereof, using method.
Background technology
The performances such as magnesium oxysulfide gelling system material has that quality is light, volume stability good, fire-resistant, heat insulating.Relative to widely used magnesium oxychloride cementing material, it has its distinctive feature water tolerance, the feature of environmental protection and corrosion-free to reinforcing bar, moistureproof anti-returning in halogen etc., particularly on making decoration, finishing, material of construction, has more advantage.But magnesium oxysulfide material also has the weak point of himself, such as: intensity, far below magnesium oxychloride cementing material, is only about 20Mpa, the propagation and employment in field of civil engineering is constrained.The approach addressed this problem is the hydration and hardening feature based on magnesium oxysulfide gelling material, adds suitable modifier components, improves its hydration and hardening condition.
Summary of the invention
The invention provides a kind of properties-correcting agent of magnesium oxysulfide gelling material, can make: 1, during gelling material, structure is more stable; 2, shorten processing reaction time increase blood coagulation enhancing effect, make magnesium sulfate and magnesium oxide be convenient to evenly be dissolved in gelling material; 3, the intensity of sheet material is increased; 4, water resistance is increased.
In order to realize object of the present invention, the present invention is by following scheme implementation:
Tap water and magnesium sulfate are put into reactor, controlling rotating speed is that 50-70r/min carries out stirring 4-5min, then adds light calcined magnesia, and continuing to control rotating speed is that 50-70r/min carries out stirring 4-5min, in gained mixed solution, add properties-correcting agent, then 50-70r/min carries out stirring 5-6min; Light calcined magnesia: magnesium sulfate: tap water is 1.25:1:1, properties-correcting agent consumption is the 0.5-2.5% of magnesium oxide weight.
Wherein the composition of properties-correcting agent is by weight:
Zinc Sulphate Heptahydrate 4.5-6 part;
Iron vitriol 7-9 part;
Citric acid monohydrate Food grade 7-9 part;
Boric acid 7-9 part;
Ten phosphate dihydrate trisodium 5-7 parts;
Sodium phosphate dibasic 3.5-5 part %;
Boiling water 60-63 part.
The preparation method of properties-correcting agent is: join successively from high to low in boiling water by molten point: Zinc Sulphate Heptahydrate 4.5-6 part; Iron vitriol 7-9 part; Citric acid monohydrate Food grade 7-9 part; Boric acid 7-9 part; Ten phosphate dihydrate trisodium 5-7 parts; Sodium phosphate dibasic 3.5-5 part; Next composition is added successively after previous dissolving is complete.All the components is dissolved to without after obvious sediment thing, fire-proof board can be used to stir and make mixing.
Compared with prior art, beneficial effect is in the present invention: clearly enhance timber intensity, shorten the production time, enhance water-repellancy.
Accompanying drawing explanation
fig. 1magnesium oxysulfide sheet material inner scanning Electron microscope when not adding properties-correcting agent
fig. 2magnesium oxysulfide sheet material inner scanning Electron microscope after interpolation properties-correcting agent
fig. 3properties-correcting agent addition is on the impact of timber intensity
Intensity when wherein dotted line is expressed as maintenance 7 days, solid line represents intensity during maintenance 28 days.
Embodiment
Be described in detail to technical scheme provided by the invention below with reference to specific embodiment, subordinate's embodiment is only not used in for illustration of the present invention and limits the scope of the invention.
Embodiment 1
(1) light calcined magnesia: magnesium sulfate: tap water is 1.25:1:1, and tap water and magnesium sulfate are put into reactor, controlling rotating speed is that 50r/min carries out stirring 4min, then adds light calcined magnesia, and continuing to control rotating speed is that 50r/min carries out stirring 5min.
Gelling material after stirring pours mould into, in standard curing box, normal temperature places 18h, then the demoulding, maintenance 28 days (curing room envrionment temperatures (20 ± 3) DEG C after the demoulding, ambient relative humidity (60 ± 10) %), obtain common magnesium oxysulfide gelling material test block A.
(2) modifier component is joined in boiling water successively: Zinc Sulphate Heptahydrate 4.5 parts; Iron vitriol 7 parts; Citric acid monohydrate Food grade 7 parts; Boric acid 7 parts; Ten phosphate dihydrate trisodiums 5 parts; Sodium phosphate dibasic 3.5 parts; Join in the boiling water of 60 parts; Next composition is added successively after previous dissolving is complete.All the components is dissolved to without after obvious sediment thing, fire-proof board can be used to stir and make mixing.
Light calcined magnesia: magnesium sulfate: tap water is 1.25:1:1; Tap water and magnesium sulfate are put into reactor, and controlling rotating speed is that 50r/min carries out stirring 4min, then adds light calcined magnesia, and continuing to control rotating speed is that 50r/min carries out stirring 5min, add properties-correcting agent, then 50r/min carries out stirring 5min in gained mixed solution; Properties-correcting agent consumption is 2.5% of magnesium oxide weight.
Gelling material after stirring pours mould into, in standard curing box, normal temperature places 12h, then the demoulding, maintenance 28 days (curing room envrionment temperatures (20 ± 3) DEG C after the demoulding, ambient relative humidity (60 ± 10) %), obtain that physical strength is high, water-tolerant, material surface are smooth, even, without the magnesium oxysulfide gelling material test block B of excellent properties such as cracking grade.
Embodiment 2
Adopt scanning electron microscopic observation common magnesium oxysulfide gelling material test block A and the magnesium oxysulfide gelling material test block B internal structure difference that with the addition of properties-correcting agent, see respectively
fig. 1,
fig. 2.A test block crystal inside is the irregular sheet that stratiform is piled up, and degree of crosslinking is poor, and the concentration class between crystal is less, there is larger space between crystal grain, and macro manifestations is poor stability, easy to crack, crushing resistance is poor; B test block inside has the crystal of a large amount of needle-like and lengthy motion picture shape to generate, and interlaced accumulation, improves the degree of crosslinking between crystal, intercrystalline close proximity, thus improves ultimate compression strength.
Embodiment 3
Observe, test the performance of test block A and test block B.Test block is placed in air maintenance, curing room envrionment temperature (20 ± 3) DEG C, ambient relative humidity (60 ± 10) %; Air care test block proceeds to water curing after arriving 28d, and water curing is carried out in airtight maintenance bottle, water temperature (20 ± 3) DEG C, to study the ramollescence of water to test block.
Namely test block A cracks in maintenance 1-3d in atmosphere, and test block B is stable in the air not to ftracture, and test block pressure resistance intensity rises appreciably; After proceeding to water curing, test block A ultimate compression strength obviously reduces, but test block B still slightly increases.
table 1add properties-correcting agent to the impact of magnesium oxysulfide material
| Test block A | Test block B | |
| Presetting period h | 2 | 1 |
| Ultimate compression strength % (air 7d) | 100 | 140 |
| Ultimate compression strength % (air 28d) | 110 | 160 |
| Coefficient of softening >= | 0.3 | 0.8 |
| Ultimate compression strength % (in water 7d) | 50 | 165 |
Embodiment 4
Test block A, B are put into constant-temp. and-moisture maintenance, setting maintaining box temperature 40 DEG C, relative humidity 95%, maintenance 72h, observes surface of test piece change.
Result shows, test block A surface is micro-wet, and rate of moisture absorption reaches 0.09g/cm
2; Test block B surface drying, rate of moisture absorption is only 1/10 of test block A, is 0.009g/cm
2.
Embodiment 5
Add the properties-correcting agent of various dose, observe its impact on magnesium oxysulfide material ultimate compression strength.
table 2the effect of different amounts properties-correcting agent
Note: in the ultimate compression strength of test block A for 100%.
Embodiment 6
Modifier material is joined in boiling water successively: Zinc Sulphate Heptahydrate 6 parts; Iron vitriol 9 parts; Citric acid monohydrate Food grade 9 parts; Boric acid 9 parts; Ten phosphate dihydrate trisodiums 7 parts; Sodium phosphate dibasic 5 parts; Boiling water 63 parts.Next composition is added successively after previous dissolving is complete.All the components is dissolved to without after obvious sediment thing, fire-proof board can be used to stir and make mixing.
Light calcined magnesia: magnesium sulfate: tap water is 1.25:1:1; Tap water and magnesium sulfate are put into reactor, and controlling rotating speed is that 70r/min carries out stirring 5min, then adds light calcined magnesia, and continuing to control rotating speed is that 70r/min carries out stirring 5min, add properties-correcting agent, then 70r/min carries out stirring 6min in gained mixed solution; Properties-correcting agent consumption is 0.5% of magnesium oxide weight.
Gelling material after stirring pours mould into, in standard curing box, normal temperature places 12h, then the demoulding, maintenance 28 days (curing room envrionment temperatures (20 ± 3) DEG C after the demoulding, ambient relative humidity (60 ± 10) %), obtain that physical strength is high, water-tolerant, material surface are smooth, even, without the magnesium oxysulfide gelling material C of excellent properties such as cracking grade.
Embodiment 7
Modifier material is joined successively in 61 parts of boiling water: Zinc Sulphate Heptahydrate 5 parts; Iron vitriol 8 parts; Citric acid monohydrate Food grade 8 parts; Boric acid 8 parts; Ten phosphate dihydrate trisodiums 6 parts; Sodium phosphate dibasic 4 parts; Next composition is added successively after previous dissolving is complete.All the components is dissolved to without after obvious sediment thing, fire-proof board can be used to stir and make mixing.
Light calcined magnesia: magnesium sulfate: tap water is 1.25:1:1; Tap water and magnesium sulfate are put into reactor, and controlling rotating speed is that 70r/min carries out stirring 4min, then adds light calcined magnesia, and continuing to control rotating speed is that 70r/min carries out stirring 4min, add properties-correcting agent, then 70r/min carries out stirring 5min in gained mixed solution; Properties-correcting agent consumption is 1.0% of magnesium oxide weight.
Gelling material after stirring pours mould into, in standard curing box, normal temperature places 12h, then the demoulding, maintenance 28 days (curing room envrionment temperatures (20 ± 3) DEG C after the demoulding, ambient relative humidity (60 ± 10) %), obtain that physical strength is high, water-tolerant, material surface are smooth, even, without the magnesium oxysulfide gelling material D of excellent properties such as cracking grade.
Embodiment 8
Modifier material is joined successively in 63 parts of boiling water: Zinc Sulphate Heptahydrate 5.5 parts; Iron vitriol 8 parts; Citric acid monohydrate Food grade 9 parts; Boric acid 8 parts; Ten phosphate dihydrate trisodiums 7 parts; Sodium phosphate dibasic 4.5 parts; Next composition is added successively after previous dissolving is complete.All the components is dissolved to without after obvious sediment thing, fire-proof board can be used to stir and make mixing.
Light calcined magnesia: magnesium sulfate: tap water is 1.25:1:1; Tap water and magnesium sulfate are put into reactor, and controlling rotating speed is that 70r/min carries out stirring 4min, then adds light calcined magnesia, and continuing to control rotating speed is that 50r/min carries out stirring 4min, add properties-correcting agent, then 60r/min carries out stirring 5min in gained mixed solution; Properties-correcting agent consumption is 2.0% of magnesium oxide weight.
Gelling material after stirring pours mould into, in standard curing box, normal temperature places 12h, then the demoulding, maintenance 28 days (curing room envrionment temperatures (20 ± 3) DEG C after the demoulding, ambient relative humidity (60 ± 10) %), obtain that physical strength is high, water-tolerant, material surface are smooth, even, without the magnesium oxysulfide gelling material test block E of excellent properties such as cracking grade.
Claims (8)
1. a properties-correcting agent for magnesium oxysulfide sheet material, is characterized in that, consists of the following composition by weight: Zinc Sulphate Heptahydrate 4.5-6 part; Iron vitriol 7-9 part; Citric acid monohydrate Food grade 7-9 part; Boric acid 7-9 part; Ten phosphate dihydrate trisodium 5-7 parts; Sodium phosphate dibasic 3.5-5 part; Boiling water 60-63 part.
2. the preparation method of properties-correcting agent according to claim 1, is characterized in that, each component is joined successively from high to low in 60-63 part boiling water: Zinc Sulphate Heptahydrate 4.5-6 part by molten point; Iron vitriol 7-9 part; Citric acid monohydrate Food grade 7-9 part; Boric acid 7-9 part; Ten phosphate dihydrate trisodium 5-7 parts; Sodium phosphate dibasic 3.5-5 part; Next composition is added successively after previous dissolving is complete; All the components is dissolved to without after obvious sediment thing, fire-proof board can be used to stir and make mixing.
3. the using method of properties-correcting agent according to claim 1 in the preparation of magnesium oxysulfide sheet material, it is characterized in that, properties-correcting agent consumption is the 0.5-2.5% of magnesium oxide weight in sheet material.
4. using method as claimed in claim 3, is characterized in that, wherein the consisting of of magnesium oxysulfide sheet material: light calcined magnesia: magnesium sulfate: tap water is 1.25:1:1.
5. using method as claimed in claim 3, it is characterized in that, undertaken by following operation: tap water and magnesium sulfate are put into reactor, controlling rotating speed is that 50-70r/min carries out stirring 4-5min, add light calcined magnesia again, continuing to control rotating speed is that 50-70r/min carries out stirring 4-5min, add properties-correcting agent, then 50-70r/min carries out stirring 5-6min in gained mixed solution; Light calcined magnesia: magnesium sulfate: tap water is 1.25:1:1, properties-correcting agent consumption is the 0.5-2.5% of magnesium oxide weight.
6. method as claimed in claim 3, it is characterized in that, pour the gelling material after stirring into mould, in maintaining box, normal temperature places 12h, the then demoulding, maintenance 28 days after the demoulding, curing condition is curing room envrionment temperature (20 ± 3) DEG C, ambient relative humidity (60 ± 10) %, obtains that physical strength is high, water-tolerant, material surface are smooth, even, without the magnesium oxysulfide gelling material of excellent properties such as cracking grade.
7. method as claimed in claim 6, it is characterized in that, the gelling material after stirring is the gelling material of the 0.5-2.5% properties-correcting agent that with the addition of magnesium oxide weight.
8. method as claimed in claim 6, it is characterized in that, the gelling material after stirring is Zinc Sulphate Heptahydrate 4.5-6 part for the addition of by weight part; Iron vitriol 7-9 part; Citric acid monohydrate Food grade 7-9 part; Boric acid 7-9 part; Ten phosphate dihydrate trisodium 5-7 parts; Sodium phosphate dibasic 3.5-5 part; The gelling material of the properties-correcting agent of boiling water 60-63 part composition.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106187054A (en) * | 2016-07-27 | 2016-12-07 | 张家港市盛港绿色防火建材有限公司 | A kind of integrated house and special magnesium sulfate floor, integrated movable room |
| CN107640949A (en) * | 2016-07-20 | 2018-01-30 | 重庆市镁晶防火材料有限公司 | A kind of magnesium crystalline substance fireproof board and preparation method thereof |
| CN108383410A (en) * | 2018-04-13 | 2018-08-10 | 成都八云科技有限公司 | The modifying agent and its composite wood of MgSO4-MgO system composite woods |
| CN108503246A (en) * | 2017-05-03 | 2018-09-07 | 林成华 | The magnesium oxysulfide concrete of high-strength low-absorption |
| CN108975742A (en) * | 2018-07-16 | 2018-12-11 | 安徽耐特嘉信息科技有限公司 | A kind of multi-functional compound mother liquor for building material and composite board |
| CN110092634A (en) * | 2019-05-23 | 2019-08-06 | 张家港市盛港绿色防火建材有限公司 | A kind of enhancing plate and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107640949A (en) * | 2016-07-20 | 2018-01-30 | 重庆市镁晶防火材料有限公司 | A kind of magnesium crystalline substance fireproof board and preparation method thereof |
| CN107640949B (en) * | 2016-07-20 | 2020-04-28 | 重庆市镁晶防火材料有限公司 | Magnesium crystal fireproof flame-retardant plate and preparation method thereof |
| CN106187054A (en) * | 2016-07-27 | 2016-12-07 | 张家港市盛港绿色防火建材有限公司 | A kind of integrated house and special magnesium sulfate floor, integrated movable room |
| CN108503246A (en) * | 2017-05-03 | 2018-09-07 | 林成华 | The magnesium oxysulfide concrete of high-strength low-absorption |
| CN108383410A (en) * | 2018-04-13 | 2018-08-10 | 成都八云科技有限公司 | The modifying agent and its composite wood of MgSO4-MgO system composite woods |
| CN108975742A (en) * | 2018-07-16 | 2018-12-11 | 安徽耐特嘉信息科技有限公司 | A kind of multi-functional compound mother liquor for building material and composite board |
| CN110092634A (en) * | 2019-05-23 | 2019-08-06 | 张家港市盛港绿色防火建材有限公司 | A kind of enhancing plate and preparation method thereof |
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