CN103172327A - Reinforced cement foaming board and preparation method thereof - Google Patents
Reinforced cement foaming board and preparation method thereof Download PDFInfo
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- CN103172327A CN103172327A CN2013101185104A CN201310118510A CN103172327A CN 103172327 A CN103172327 A CN 103172327A CN 2013101185104 A CN2013101185104 A CN 2013101185104A CN 201310118510 A CN201310118510 A CN 201310118510A CN 103172327 A CN103172327 A CN 103172327A
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Abstract
The invention relates to a reinforced cement foaming board and a preparation method thereof. The reinforced cement foaming board comprises the following components in percentage by weight: 27.00-35.50% of water, 28.0-61.0% of Portland cement, 0-32.70% of coal ash at grade I or a mixture of coal ash and recycled filler, 0-2.00% of wollastonite powder, 0.10-0.30% of fiber, 0.37-0.65% of ammonium stearate, 1.00-2.00% of a mixture of 10 parts of calcium sulphate and 1 part of calcium formate, 0.10-0.20% of naphthalenesulfonate formaldehyde condensation compound, 0.90-1.20% of hydrogen peroxide and reinforcement net. The reinforced cement foaming board provided by the invention has the advantages of low apparent density, low heat conductivity coefficient, good noise reduction effect, high strength, no crack and shock resistance.
Description
Technical field
The present invention relates to building material technical field, relate in particular to a kind of cement foam board and preparation method thereof.
Background technology
The ordinary Portland cement foamed board satisfies lightweight, heat insulating, sound insulation and noise reduction, high-strength, energy-conserving and environment-protective, safety, the characteristic such as durable, will obtain extensive promotion and application in modern body of wall energy-saving heat preserving building and sqouynd absorption lowering noise engineering.Existing similar techniques such as publication number are CN101182175A " coal gangue-fly ash foam concrete " patent, and open component and proportioning are: cement: flyash: coal gangue: lime: gypsum: filler: the weight ratio of whipping agent is 20～30%:6.4～29.4%:0.6～63.6%:5～30%:2～9%:0～30%:0.5～2.5%.
And for example publication number is CN101172881A " a kind of foamed concrete and preparation method thereof " patent, open component and weight percent are: siccative is comprised of cement, flyash and unslaked lime, and the per-cent that each component accounts for the siccative gross weight is respectively 30～35%:55～60%:5～10%; Extra material is comprised of methylcellulose gum, acid amides and anti-crack fiber, and the per-cent of the shared cement weight of each component is respectively 0.5～1%:0.5～1%:0.2～0.5%; Whipping agent is 1～2% of siccative weight percent; Water is 0.3～0.35% of siccative weight percent.
There are the restriction of following performance shortcomings and range of application in existing foamed concrete or foam cement plate: (1) adopts physical blowing technique to make, and foaming plate density is bigger than normal, and thermal conductivity is higher; Common apparent density is at 300～1200kg/m3, and its thermal conductivity is between 0.080～0.300W/ (mk); Need mix a large amount of whipping agents during the low-density foamed cement plate that (2) makes by physical blowing technique, bring simultaneously too much moisture into, when causing foam cement self low strength or roll-forming, surface finish is undesirable; (3) the foam cement plate is mainly used in the fire prevention, sound insulation of wall self-insulation, skeleton construction partition, ground and roof heat insulation, interior wall, because of its deadweight too heavy, thermal conductivity is higher, soundproof effect is limited and limited material in the range of application in exterior-wall heat insulation and sound insulation and noise reduction field; (4) the existing foam cement plate that is applied to exterior-wall heat insulation mostly is small size, and cracky in transportation, use procedure, fractures, ftractures; (5), there is later strength retraction phenomenon in all or part of interpolation quick hardening sulphoaluminate cement foaming, affects construction quality.
Summary of the invention
The object of the invention is to, a kind of refinforced cement foamed board and preparation method thereof is provided, possess that apparent density is little, low thermal conductivity, sound insulation and noise reduction effect better, high strength, do not ftracture, shock proof advantage.
To achieve these goals, the invention provides technical scheme as follows:
A kind of refinforced cement foamed board, its recipe ingredient and weight percent are:
Water: 27.00%～35.50%
Silicate cement: 28.0%～61.0%
The mixture of I level flyash or flyash and recovery filler: 0%～32.70%
Wollastonite powder: 0%～2.00%
Fiber: 0.10%～0.30%
Ammonium stearate: 0.37%～0.65%
10 parts of calcium sulfate and 1 part of calcium formiate mixture: 1.00%～2.00%
Naphthalenesulfonate formaldehyde condensation compound: 0.10%～0.20%
Hydrogen peroxide: 0.90%～1.20%
And enhancing net.
In the mixture of described flyash and recovery filler, reclaim filler and account for 0%～70% of entire mixture.
The twine of described enhancing net is monofilament or multifilament, and the major diameter direction width of twine is 0.2mm-10mm, and screen distance is 1mm-300mm.
The material of described enhancing net is glass fibre, high polymer fiber or metal.
Described enhancing net is plane net or 3 D stereo net.
A kind of preparation method of refinforced cement foamed board comprises the steps:
A, first with mixture, wollastonite powder, fiber, suds-stabilizing agent ammonium stearate and the first properties-correcting agent naphthalenesulfonate formaldehyde condensation compound premix of silicate cement, flyash or flyash and recovery filler;
B, add entry again and mix;
C, add the second properties-correcting agent calcium sulfate, calcium formiate mixture fully to mix again;
D, add the whipping agent hydrogen peroxide fully to stir;
E, pour into and place in advance the mould molding that strengthens net, and maintenance, be cut into finished product.
Described enhancing net is that the 3 D stereo net is directly built moulding in the in-mold molding mode;
Perhaps plane net is fixed by 20mm～100mm spacing longitudinal arrangement or transversely arranged placement, builds moulding;
Perhaps fixed mould thickness, carry out two-sided composite casting moulding.
Enhanced foaming cement plate of the present invention uses ordinary Portland cement but not quick hardening sulphoaluminate cement foams, and has guaranteed the carbonation coefficient index of product, has accomplished not retraction of intensity.
Its dry apparent density≤250kg/m3 of enhanced foaming cement plate of the present invention, thermal conductivity≤0.060W/(mK).Original foam cement plate all exists board dimension little, the general sheet material length of side is all at 300mm～400mm, this is because conventional foam cement plate itself is more crisp, folding strength is low, large-sized frangibility or cracking, be not suitable for being processed into large-sized sheet material, even fractureing and crackle also easily appears in undersized conventional foam cement plate in cutting, use and transportation.The enhanced foaming cement plate length of side of the present invention can reach 300mm～1200mm, has effectively improved operating efficiency in its application process, the rate of reducing the number of rejects and seconds.
In order to realize low density, low thermal conductivity, whipping agent of the present invention is selected is chemical foaming agent but not pneumatogen.Because the physical blowing effect is not very desirable, be difficult to make low density product.Whipping agent of the present invention is that concentration is 27.5% technical grade superoxol, and to have gas production rate large because of it, and expansion rate is suitable, the characteristics that consumption is little, and the oxygen that utilizes himself disproportionation reaction produces under normal temperature and heating state foams.
Strengthen the effect that net plays stiffening web in the present invention, when the low thermal conductivity that satisfies the ordinary Portland cement foamed board, low density, ultimate compression strength are high, significantly improve shock resistance, the tensile strength of sheet material, effectively promoted the drawback that folding strength is avoided frangibility.
Enhanced foaming cement plate moulding process of the present invention is common silicate cement foaming and the disposable composite molding of enhancing net, has greatly promoted the tensile strength of product, and the increase that strengthens the built-in quantity of net is conducive to the lifting of product tensile strength.External force fractures the enhanced foaming cement plate or it is broken to be difficult for when clashing into being subject to, the effect of " the folding bone connects muscle " even produce damage, also occurs.This provides convenience in transportation, pile, anchoring crab-bolt process for the foam cement plate.
The present invention strengthens the net composite molding technique, has reduced the drying shrinkage value index of foam cement plate, has improved the anti-cracking performance of product.The increase that strengthens the built-in quantity of net is conducive to the reduction of foam cement plate drying shrinkage value, and in test, dry apparent density is that the foam cement plate drying shrinkage value of 150kg/m3 left and right is reduced to 0.35mm/m by 0.50mm/m.
The present invention adopts and strengthens Netcom and cross various forms and normal silicate foam cement plate is carried out internal structure strengthen, and the material that strengthens net can be selected: the silk screen that the metallic substance such as glass fibre, high molecular polymer and the ferrous metal close with foam cement plate thermal expansivity or iron alloy are made.
The twine of the enhancing net that the present invention uses can be the monofilament that possesses certain fineness, the multifilament that also can form by multifilament afterturn or gummed, and also multifilament forms reinforced multifilament by certain radical close-packed arrays again.The diameter of monofilament or multifilament is relevant according to the requirement of intensity, and the major diameter direction width of monofilament or multifilament is generally 0.2mm-10mm.
The enhancing net that the present invention uses is processed should be possessed outside necessary mechanical property, can require to have certain erosion resistance according to concrete environment for use.Under to anticorrosive environment of having relatively high expectations, can adopt alkali resistant glass fibre, simple glass fiber process through alkaline-resisting plastic-coated or (with) zirconium white, titanium dioxide corrosion-resistant treatments; The perhaps material that is compiled into of high molecular polymer is such as these chemically stables of polypropylene fibre, nylon, spandex, acrylic fibers, polyamide fibre, polyester etc. material preferably; Perhaps Stainless Steel Cloth, Galvanized Steel Wire Netting etc., and strengthen net through metal species anticorrosion or that other metal material inertization is worked out and also can select.If environment for use is less demanding for erosion resistance, can use simple glass fiber, woven wire or without antiseptic wire netting.
The present invention is the useless light-weight building energy-saving and heat-insulating material of a kind of profit, solids component flyash in material accounts for 30%～40%, after the scrap stock of finished product cutting reclaim, after pulverizing grinding, removal of impurities, again recycle as reclaiming filler by 0%～70% of flyash addition, replace part flyash, both accomplished to reduce costs, save again resource, really accomplished recycle, environmental protection.
The technological merit that the present invention possesses comprises: but apparent density is little, low thermal conductivity, sound insulation and noise reduction effect better, high strength, do not ftracture, shock resistance, combustionproperty A level, cost are low, weather resistance and the batch production of same longevity of building are processed characteristic.Product is compared with common foamed board to have outstanding advantage and is: the dry density that cracky, specification are various, not lower and thermal conductivity, higher tensile strength, better sqouynd absorption lowering noise effect.Batch production processing cutting waste material is recycled, and plays the effect of energy-conserving and environment-protective, recycling economy.Product may be used on exterior-wall heat insulation, fire-proof product and inhales sound insulation, noise reduction field.
Below, further the present invention is described in detail in connection with accompanying drawing.
Description of drawings
Fig. 1 is first embodiment of the invention refinforced cement foamed board schematic diagram;
Fig. 2 is second embodiment of the invention refinforced cement foamed board schematic diagram;
Fig. 3 is third embodiment of the invention refinforced cement foamed board schematic diagram;
Fig. 4 is fourth embodiment of the invention refinforced cement foamed board schematic diagram;
Fig. 5 is fifth embodiment of the invention refinforced cement foamed board schematic diagram;
Fig. 6 is sixth embodiment of the invention refinforced cement foamed board schematic diagram;
Fig. 7 is preparation method's schematic flow sheet of cement foam board of the present invention;
Embodiment
The first embodiment:
| Name of material | Weight percent/% |
| Ordinary Portland cement | 28.00 |
| I level flyash | 32.70 |
| Water | 35.50 |
| Wollastonite powder | 0 |
| Fiber | 0.15 |
| Ammonium stearate | 0.65 |
| Naphthalenesulfonate formaldehyde condensation compound | 0.10 |
| Calcium sulfate, calcium formiate mixture | 1.90 |
| Whipping agent | 1.00 |
As Fig. 1, strengthening net in the present embodiment is the 3 D stereo net, strengthens net and directly build moulding in mould.
The second embodiment:
As Fig. 2, strengthening net in the present embodiment is plane net, two-sided composite casting moulding, and finished product two bottom surfaces all have one deck to strengthen net.
The 3rd embodiment:
As Fig. 3, strengthening net in the present embodiment is plane net, and longitudinal arrangement is placed and fixed at a certain distance, builds moulding.
The 4th embodiment:
| Name of material | Weight percent/% |
| 42.5 level ordinary Portland cement | 61.00 |
| I level flyash | 0 |
| Water | 33.40 |
| Wollastonite powder | 2.00 |
| Fiber | 0.20 |
| Ammonium stearate | 0.54 |
| Naphthalenesulfonate formaldehyde condensation compound | 0.20 |
| Calcium sulfate, calcium formiate mixture | 1.56 |
| Whipping agent | 1.10 |
As Fig. 4, strengthening net in the present embodiment is plane net, and transversely arranged placement is fixed at a certain distance, builds moulding, has multiple tracks to strengthen net in the cutting finished product.
The 5th embodiment:
As Fig. 5, strengthening net in the present embodiment is reinforced plane net, and transversely arranged placement is fixed at a certain distance, builds moulding, in the cutting finished product, the reinforced enhancing net of multiple tracks is arranged.
The 6th embodiment
| Name of material | Weight percent/% |
| 42.5 level ordinary Portland cement | 44.40 |
| I level flyash | 15.20 |
| Water | 35.10 |
| Wollastonite powder | 1.48 |
| Fiber | 0.13 |
| Ammonium stearate | 0.56 |
| Naphthalenesulfonate formaldehyde condensation compound | 0.13 |
| Calcium sulfate, calcium formiate mixture | 1.85 |
| Whipping agent | 1.15 |
As Fig. 6, be plane net in the present embodiment, transversely arranged placement is fixed at a certain distance, builds moulding, and cutting finished product inside has and strengthens net one.
Test-results
The present embodiment 1-4 enhanced foaming cement plate, thermal conductivity detects by the regulation of GB/T10294; Dry apparent density detects by the regulation of GB/T5486; Ultimate compression strength detects by the regulation of GB/T5486; Detect perpendicular to the regulation of plate face tensile strength by JGJ144; Drying shrinkage value is by the GB/T11969(rapid method) regulation detect; Coefficient of softening detects by the regulation of JGJ51; The combustionproperty rank detects by the regulation of GB8624; Water-intake rate detects by the regulation of the mark Q/VBCT1-2012 of enterprise.Assay is as follows:
Need to prove, the state of the enhancing net that represents in accompanying drawing is schematic diagram, in actual the use, according to the requirement in the use field of enhanced foaming cement plate, the magnitude setting and the density that strengthen net in the enhanced foaming cement plate of different tensions, resistance to compression, folding strength in very large range fluctuate.The all capable of dynamic adjustment such as spacing between thickness, every layer of net of the radical of twine on the enhancing net unit surface of using, silk.And strengthen net and may not be in parastate arrange in foamed board, strengthen net and bottom surface or side and the irregular forms such as sagging, epirelief, side song may occur.
The thermal conductivity of enhanced foaming cement plate of the present invention can be accomplished 0.050W/ (mk), and dry apparent density can reach 150kg/m3, is fire-retardant type insulation preferably and sound absorption and noise reduction material.In test, dry apparent density is that the thermal conductivity of the enhanced foaming cement plate of 148kg/m3 is 0.050W/ (mk); Dry apparent density is that the thermal conductivity of the enhanced foaming cement plate of 153kg/m3 is 0.051W/ (mk).
As Fig. 5, a kind of preparation method of refinforced cement foamed board comprises the steps:
A, first with mixture, wollastonite powder, fiber, suds-stabilizing agent ammonium stearate and the first properties-correcting agent naphthalenesulfonate formaldehyde condensation compound premix of silicate cement, flyash or flyash and recovery filler;
B, add entry again and mix;
C, add the second properties-correcting agent calcium sulfate, calcium formiate mixture fully to mix again;
D, add the whipping agent hydrogen peroxide fully to stir;
E, pour into and place in advance the mould molding that strengthens net, and maintenance, be cut into finished product.
When adopting three dimensional network to strengthen, moulding process adopts the primary concreting moulding, and the number of plies of the thickness that the enhanced foaming cement plate thickness of moulding can be by three dimensional network or the enhancing net of use is regulated.Finished product uses size optionally to cut the enhanced foaming body or the once shaped of fixed mould size.
The moulding process of plane net enhanced foaming cement can adopt two-sided composite molding and equidistant built-in enhancing moulding process.When plane net was applied in two-sided composite molding technique, the foamed board thickness of moulding was definite, is mold thickness, but mold thickness and large I are adjusted as required.It is to be attached on two maximum sole of foamed board that two-sided composite molding technique strengthens net.Finished product also cuts or once shaped the enhanced foaming cement plate according to the requirement of using size.
Enhancing net when plane net is applied in equidistant built-in enhancing moulding process in finished product is not necessarily in two maximum sole of sheet material, can with arbitrary face roughly in the same way.Can there be one or multi-channel enhancing net simultaneously in enhanced foaming cement plate inside, and the quantity that exists that strengthens net is regulated by built-in spacing as required
In addition, three dimensional network and plane net can the engineering construction scene is fixed or be layed in basic unit by template after, carry out the cast in situs moulding to it.Can carry out one or many according to requirement of engineering and build moulding, to reach needed thickness and dimensional requirement.
Claims (7)
1. a refinforced cement foamed board, is characterized in that, its recipe ingredient and weight percent are:
Water: 27.00%～35.50%
Silicate cement: 28.00%～61.00%
The mixture of I level～II level flyash or flyash and recovery filler: 0%～32.70%
Wollastonite powder: 0%～2.00%
Fiber: 0.10%～0.30%
Ammonium stearate: 0.37%～0.65%
10 parts of calcium sulfate and 1 part of calcium formiate mixture: 1.00%～2.00%
Naphthalenesulfonate formaldehyde condensation compound: 0.10%～0.20%
Hydrogen peroxide: 0.90%～1.20%
And enhancing net.
2. a refinforced cement foamed board as claimed in claim 1, is characterized in that, in the mixture of described flyash and recovery filler, reclaims filler and account for 0%～70% of entire mixture.
3. a refinforced cement foamed board as claimed in claim 1, is characterized in that, the twine of described enhancing net is monofilament or multifilament, and the major diameter direction width of twine is 0.2mm-10mm, and screen distance is 1mm-300mm.
4. a refinforced cement foamed board as claimed in claim 3, is characterized in that, the material of described enhancing net is glass fibre, high polymer fiber or metal.
5. a refinforced cement foamed board as claimed in claim 3, is characterized in that, described enhancing net is plane net or 3 D stereo net.
6. the preparation method of a refinforced cement foamed board as claimed in claim 1, is characterized in that, comprises the steps:
A, first with silicate cement, flyash or reclaim filler, wollastonite powder, fiber, suds-stabilizing agent ammonium stearate and the first properties-correcting agent naphthalenesulfonate formaldehyde condensation compound premix;
B, add entry again and mix;
C, add the second properties-correcting agent calcium sulfate, calcium formiate mixture fully to mix again;
D, add the whipping agent hydrogen peroxide fully to stir;
E, pour into and place in advance the mould molding that strengthens net, and maintenance, be cut into finished product.
7. the preparation method of a refinforced cement foamed board as claimed in claim 6, is characterized in that, described enhancing net is that the 3 D stereo net is directly built moulding in the in-mold molding mode;
Perhaps plane net is fixed by 20mm～100mm spacing longitudinal arrangement or transversely arranged placement, builds moulding; Perhaps fixed mould thickness, carry out two-sided composite casting moulding.
Priority Applications (1)
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| CN2013101185104A CN103172327A (en) | 2013-04-08 | 2013-04-08 | Reinforced cement foaming board and preparation method thereof |
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| CN103924763A (en) * | 2014-04-17 | 2014-07-16 | 安徽华普节能材料股份有限公司 | Manufacturing process for external wall decoration hanging plate |
| CN103924760A (en) * | 2014-04-17 | 2014-07-16 | 安徽华普节能材料股份有限公司 | Manufacturing technology of assembly-type outer wall decoration inorganic sandwich composite heat-preserving board |
| CN104016642A (en) * | 2014-06-24 | 2014-09-03 | 哈尔滨工业大学 | Preparation method of special-shaped polymer structure reinforcing composite light-weight cement |
| CN104191498A (en) * | 2014-08-22 | 2014-12-10 | 柳州市杰特建材有限责任公司 | Cement board making device |
| CN104829191A (en) * | 2015-03-31 | 2015-08-12 | 安徽鑫润新型材料有限公司 | High hardness thermal insulation plant fiber cement composite strip plate and producing method thereof |
| CN105064522A (en) * | 2015-07-23 | 2015-11-18 | 何惠君 | Environment-friendly flame-retardant plate and production method |
| CN105544926A (en) * | 2015-12-18 | 2016-05-04 | 中材科技股份有限公司 | High-compression-resistance three-dimensional hollow composite floor and manufacturing method thereof |
| CN105601212A (en) * | 2015-12-30 | 2016-05-25 | 卓达新材料科技集团威海股份有限公司 | Saltpetering-prevention sulphoaluminate cement product and preparation method thereof |
| CN105753398A (en) * | 2016-01-21 | 2016-07-13 | 湖南工业大学 | Environment-friendly high-strength high-barrier light foam material for walls |
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| CN103924760A (en) * | 2014-04-17 | 2014-07-16 | 安徽华普节能材料股份有限公司 | Manufacturing technology of assembly-type outer wall decoration inorganic sandwich composite heat-preserving board |
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| CN104016642B (en) * | 2014-06-24 | 2016-08-24 | 哈尔滨工业大学 | The preparation method of the composite light cement that a kind of profiled polymer structure strengthens |
| CN104016642A (en) * | 2014-06-24 | 2014-09-03 | 哈尔滨工业大学 | Preparation method of special-shaped polymer structure reinforcing composite light-weight cement |
| CN104191498A (en) * | 2014-08-22 | 2014-12-10 | 柳州市杰特建材有限责任公司 | Cement board making device |
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| CN104829191A (en) * | 2015-03-31 | 2015-08-12 | 安徽鑫润新型材料有限公司 | High hardness thermal insulation plant fiber cement composite strip plate and producing method thereof |
| CN105064522A (en) * | 2015-07-23 | 2015-11-18 | 何惠君 | Environment-friendly flame-retardant plate and production method |
| CN105544926A (en) * | 2015-12-18 | 2016-05-04 | 中材科技股份有限公司 | High-compression-resistance three-dimensional hollow composite floor and manufacturing method thereof |
| CN105601212A (en) * | 2015-12-30 | 2016-05-25 | 卓达新材料科技集团威海股份有限公司 | Saltpetering-prevention sulphoaluminate cement product and preparation method thereof |
| CN105753398A (en) * | 2016-01-21 | 2016-07-13 | 湖南工业大学 | Environment-friendly high-strength high-barrier light foam material for walls |
| CN105753398B (en) * | 2016-01-21 | 2018-08-07 | 湖南工业大学 | A kind of environment friendly wall high-intensity high is every lightweight foam material |
| CN109437694A (en) * | 2018-12-14 | 2019-03-08 | 仁净(江苏)集成系统科技有限公司 | A kind of pottery mud foaming composite type purifying plate |
| CN110713372A (en) * | 2019-12-07 | 2020-01-21 | 江苏宏盛环保科技有限公司 | Autoclaved aerated concrete block for integrated wall system and preparation method thereof |
| CN110713372B (en) * | 2019-12-07 | 2020-06-05 | 江苏宏盛环保科技有限公司 | Autoclaved aerated concrete block for integrated wall surface system and preparation method thereof |
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Application publication date: 20130626 |