CN103508711B - A kind of High-performance foam concrete insulation board and preparation method thereof - Google Patents

A kind of High-performance foam concrete insulation board and preparation method thereof Download PDF

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Publication number
CN103508711B
CN103508711B CN201210219555.6A CN201210219555A CN103508711B CN 103508711 B CN103508711 B CN 103508711B CN 201210219555 A CN201210219555 A CN 201210219555A CN 103508711 B CN103508711 B CN 103508711B
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foam concrete
water
concrete heat
cement
preserving plate
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CN201210219555.6A
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Chinese (zh)
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CN103508711A (en
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李承吉
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沈阳红姗石建筑装饰材料有限公司
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Abstract

The invention belongs to architecture exterior wall insulating materials field, relate to a kind of High-performance foam concrete insulation board and preparation method thereof.Count by weight, warming plate is the cement of 45-250, the mixing of the whipping agent of the adulterant of 10-125,6-30, the water of 40-130, the admixture of 0.8-5.5 and 2-11 properties-correcting agent builds and form.Gained warming plate quality of the present invention is light, and intensity is high, and water-repellancy is remarkable.

Description

A kind of High-performance foam concrete insulation board and preparation method thereof
Technical field
The invention belongs to architecture exterior wall insulating materials field, relate to a kind of High-performance foam concrete insulation board and preparation method thereof.
Background technology
At present, in the organic-based material that architecture exterior wall insulating materials market is conventional, as polystyrene foam plate, phenolic foam board etc., its fire resistance extreme difference, easy firing, best phenol formaldehyde foam only can only reach B1 level, and weathering resistance is poor, work-ing life is short, and replacement cost is high.And in inorganic heat insulation material: the cost value of multicellular glass, foamed aluminium, foamed ceramics is very high; Although the fiber heat preservation material prices such as rock wool are lower slightly, because it is not mechanically resistant material, can application property poor, and have harm to people's health, easily make people scratchy from head to foot, silicosis etc.; In addition, the particulate bulk such as pearlstone, glass bead lagging material, loosely not easily uses, and with the bonding then density of cement rubber powder is large, heat insulation effect is undesirable, their application is restricted.Therefore have that fire resistance is good, the foamed concrete of heat insulating, light sound-proof, shockproof function is widely used in building operation at present.
Foamed concrete typically refers to, with physical method, foaming agent water solution is prepared into foam, again by cement-based gelling material, mineral admixture, gather materials, admixture, water and other auxiliary materials etc. once stir obtained slip, finally the foam of preparation and slip are carried out secondary mix and blend, build shaping, form removal maintenance.Be applicable to roofing, ground, non-bearing wall body insulation, cast in situs construction and the heat insulation material products thereof such as pit backfill.Advantage: low from heavy and light, thermal conductivity, long service life; Shortcoming: 1. in secondary stirring process, dry density is lower, foam is evenly more difficult with mixing of slurry, and can cause foam aperture size and skewness, intensity is low, and heat conductivility declines; 2. in secondary stirring process, along with the loss of foam, slurry can be increasingly diluted, thus causes sedimentation of gathering materials, and can not be evenly distributed in slurry, makes construction and intensity be difficult to be guaranteed; 3. intensity and thermal conductivity conflict, reduces thermal conductivity if want, just needs the content improving foam in foamed concrete, i.e. void content, thus the reduction causing intensity; 4. in foamed concrete, air vent wall structural constituent is unreasonable, and form non-fully and close hole, cause water-intake rate to increase, heat conductivility declines; 5. ordinary Portland cement is long for time of coagulation, and foam defoaming process is fast, the generation of the mould phenomenon that causes collapsing; , along with external environment change, can efflorescence be there is through certain hour in 6. the mixing of aluminosulfate cement.
Summary of the invention
The object of the present invention is to provide a kind of High-performance foam concrete insulation board and preparation method thereof.
For achieving the above object, the technical solution used in the present invention is:
A kind of High-performance foam concrete insulation board, is characterized in that: count by weight, and warming plate is the cement of 45-250, the whipping agent of the adulterant of 10-125,6-30, the water of 40-130, the admixture of 0.8-5.5 and the mixing of 2-11 properties-correcting agent are built and formed.
Described cement is ordinary Portland cement; Described adulterant is breeze and flyash; Described whipping agent is industrial hydrogen peroxide; Described admixture is polycarboxylate water-reducer, Calucium Silicate powder and sodium sulfate; Described properties-correcting agent is polypropylene fibre, redispersable latex powder, hydrophober and calcium stearate.
Described breeze and flyash mix in mass fraction 1-2:1 ratio; Polycarboxylate water-reducer, Calucium Silicate powder and sodium sulfate mix in mass fraction 1:2:2 ratio; Polypropylene fibre, redispersable latex powder, hydrophober and calcium stearate mix in mass fraction 0.5:1:1:3 ratio.
Temperature is adopted to be the water of 40-50 DEG C in described High-performance foam concrete insulation board.
Described warming plate is cast in mould after being mixed by described raw material and is shaped, the demoulding after being shaped, and fully airing forms, and is High-performance foam concrete insulation board.
The preparation method of described High-performance foam concrete insulation board, it is characterized in that: count by weight, the water of the adulterant of the cement of 45-250,10-125,40-130, the admixture of 1.5-9 and 2-11 properties-correcting agent are stirred 2-3min with 20-40r/min speed mix, then add again 6-30 whipping agent and with the speed mix and blend 0.5-1min of 50-100r/min, discharging is built in a mold, enter pre-solidifying kiln solidifying 1-2h in advance, mixture is foamed complete, wet and cut maintenance, form foam concrete heat-preserving plate.
The preparation method of described High-performance foam concrete insulation board, described pre-solidifying kiln temperature is temperature 65 ± 5 DEG C, and humidity >=95%, coagulates 1-2h in advance.
The preparation method of described High-performance foam concrete insulation board, described cement is ordinary Portland cement; Described adulterant is breeze and flyash; Described whipping agent is industrial hydrogen peroxide; Described admixture is polycarboxylate water-reducer, Calucium Silicate powder and sodium sulfate; Described properties-correcting agent is polypropylene fibre, redispersable latex powder, hydrophober and calcium stearate.
The preparation method of described High-performance foam concrete insulation board, described breeze and flyash mix in mass fraction 1-2:1 ratio; Polycarboxylate water-reducer, Calucium Silicate powder and sodium sulfate mix in mass fraction 1:2:2 ratio; Polypropylene fibre, redispersable latex powder, hydrophober and calcium stearate mix in mass fraction 0.5:1:1:3 ratio.
The preparation method of described High-performance foam concrete insulation board, adopts temperature to be the water of 40-50 DEG C in described High-performance foam concrete insulation board.
The advantage that the present invention has:
1. warming plate of the present invention adopts ordinary Portland cement, coordinate the use of Calucium Silicate powder and sodium sulfate, both solved and used ordinary Portland cement presetting period long easily collapse mould and the low problem causing the form removal cycle long of early strength caused, also evaded the risk of mixing the easy efflorescence of aluminosulfate cement in other schemes.
2. the mixing of warming plate Minerals adulterant breeze of the present invention and flyash, through overtesting determination incorporation, can improve the cement structure composition of air vent wall in foamed concrete structure, make air vent wall rational in infrastructure, intensity increases.
3. in warming plate properties-correcting agent of the present invention, redispersable latex powder to be filled in foamed concrete air vent wall between hydrated cementitious crystalline product in a large number, form network blackboard, remarkable reduction foamed concrete rigidity, improve foamed concrete dry linting phenomenon, and the aqueous solution has the bonding strength that viscosity can improve foamed concrete, foamed concrete is made to reach more high flexibility, more high-adhesive-strength and waterproof effect; Silicone based hydrophober, by forming chemical bond, makes the surface of silylation to cement matrix of hydrophobic type, plays waterproof action, effectively waterproof steady in a long-term; Calcium stearate mix the effect not only can playing stabilise bubbles, it, by blocking foamed concrete air vent wall pore, also can play waterproof action.The starting material of three kinds of water-proof functions effectively reduce the water-intake rate of this programme.
4. the present invention to prepare in the production technique of warming plate pre-solidifying kiln and can stablize foamable reaction, and the mould phenomenon that prevents from collapsing occurs, and can also improve foamed concrete early strength, demould time shortens; Stirring technique rationally meets this programme Production requirement, and product foamy structure is stablized.
Embodiment
Below in conjunction with specific embodiment, the present invention is further described, but not as limiting to the invention.
Embodiment 1:
High-performance foam concrete insulation board, takes cement 65kg, adulterant 55kg, whipping agent 15kg, water 52kg, admixture 1.1kg, properties-correcting agent 2.0kg, through mix and blend, builds shaping, solidifying form removal, maintenance in advance.
The preparation of High-performance foam concrete insulation board by cement 65kg, adulterant 55kg, water 52kg, admixture 1.1kg and properties-correcting agent 2.0kg, stirs 3min with 40r/min speed and mixes, then add whipping agent 15kg again and with the speed mix and blend 1min of 100r/min, discharging is built in a mold, enter pre-solidifying kiln, kiln temperature 65 ± 5 DEG C, humidity >=95%, pre-solidifying 1-2h, mixture initial set is foamed complete, wet and cut maintenance, form foam concrete heat-preserving plate.
Above-mentioned cement is that Liaoning Zhong Bei cement produces hard despot's board P.O52.5 ordinary Portland cement; Described adulterant is breeze and flyash, and wherein breeze is S95 level, and flyash is I grade, in adulterant breeze and flyash by weight 1:1 ratio mix; Described whipping agent to be mass concentration be 27.5% industrial hydrogen peroxide; Described admixture is WJF type polycarboxylate water-reducer (volume is the 0.4%-1.0% of cement and adulterant gross weight, water-reducing rate 40%), Calucium Silicate powder and the sodium sulfate (in admixture the 1:2:2 ratio mixing by weight of polycarboxylate water-reducer, Calucium Silicate powder and sodium sulfate) that Shenyang Yi Lida admixture construction plant produces; Described properties-correcting agent is polypropylene fibre, redispersable latex powder, hydrophober and calcium stearate (in properties-correcting agent the 0.5:1:1:3 ratio mixing by weight of polypropylene fibre, redispersable latex powder, hydrophober and calcium stearate), and wherein redispersable latex powder is the multipolymer that Shanxi three-dimensional produces with polyvinyl alcohol the ethylene-vinyl acetate being protective colloid; Hydrophober is that Shanxi three-dimensional produces silicone based hydrophober; Calcium stearate chemical formula: Ca (C17H 35COO) 2.
Embodiment 2
High-performance foam concrete insulation board, takes cement 90kg, adulterant 80kg, whipping agent 20kg, water 68kg, admixture 1.6kg, properties-correcting agent 3.0kg, through mix and blend, builds shaping, solidifying form removal, maintenance in advance.
The preparation of High-performance foam concrete insulation board: by cement 90kg, adulterant 80kg, water 68kg, admixture 1.6kg and properties-correcting agent 3.0kg, stirs 3min with 40r/min speed and mixes, then add whipping agent 15kg again and with the speed mix and blend 1min of 100r/min, discharging is built in a mold, enter pre-solidifying kiln, kiln temperature 65 ± 5 DEG C, humidity >=95%, pre-solidifying 1-2h, mixture initial set is foamed complete, wet and cut maintenance, form foam concrete heat-preserving plate.
Above-mentioned cement is that Liaoning Zhong Bei cement produces hard despot's board P.O42.5 ordinary Portland cement; Described adulterant is breeze and flyash, and wherein breeze is S95 level, and flyash is I grade, in adulterant breeze and flyash by weight 2:1 ratio mix; Described whipping agent to be mass concentration be 27.5% industrial hydrogen peroxide; Described admixture is WJF type polycarboxylate water-reducer (volume is the 0.4%-1.0% of cement and adulterant gross weight, water-reducing rate 40%), Calucium Silicate powder and the sodium sulfate (in admixture the 1:2:2 ratio mixing by weight of polycarboxylate water-reducer, Calucium Silicate powder and sodium sulfate) that Shenyang Yi Lida admixture construction plant produces; Described properties-correcting agent is polypropylene fibre, redispersable latex powder, hydrophober and calcium stearate (in properties-correcting agent the 0.5:1:1:3 ratio mixing by weight of polypropylene fibre, redispersable latex powder, hydrophober and calcium stearate), and wherein redispersable latex powder is the multipolymer that Shanxi three-dimensional produces with polyvinyl alcohol the ethylene-vinyl acetate being protective colloid; Hydrophober is that Shanxi three-dimensional produces silicone based hydrophober; Calcium stearate chemical formula: Ca (C17H 35COO) 2.
Embodiment 3
High-performance foam concrete insulation board, takes cement 130kg, adulterant 120kg, whipping agent 21kg, water 98kg, admixture 2.0kg, properties-correcting agent 3.6kg, through mix and blend, builds shaping, solidifying form removal, maintenance in advance.
High-performance foam concrete insulation board preparation method: by cement 130kg, adulterant 120kg, water 98kg, admixture 2.0kg and properties-correcting agent 3.6kg, stirs 3min with 40r/min speed and mixes, then add whipping agent 15kg again and with the speed mix and blend 1min of 100r/min, discharging is built in a mold, enter pre-solidifying kiln, kiln temperature 65 ± 5 DEG C, humidity >=95%, pre-solidifying 1-2h, mixture initial set is foamed complete, wet and cut maintenance, form foam concrete heat-preserving plate.
Above-mentioned cement is that Liaoning Zhong Bei cement produces hard despot's board P.O42.5 ordinary Portland cement; Described adulterant is breeze and flyash, and wherein breeze is S95 level, and flyash is I grade, in adulterant breeze and flyash by weight 2:1 ratio mix; Described whipping agent to be mass concentration be 27.5% industrial hydrogen peroxide; Described admixture is WJF type polycarboxylate water-reducer (volume is the 0.4%-1.0% of cement and adulterant gross weight, water-reducing rate 40%), Calucium Silicate powder and the sodium sulfate (in admixture the 1:2:2 ratio mixing by weight of polycarboxylate water-reducer, Calucium Silicate powder and sodium sulfate) that Shenyang Yi Lida admixture construction plant produces; Described properties-correcting agent is polypropylene fibre, redispersable latex powder, hydrophober and calcium stearate (in properties-correcting agent the 0.5:1:1:3 ratio mixing by weight of polypropylene fibre, redispersable latex powder, hydrophober and calcium stearate), and wherein redispersable latex powder is the multipolymer that Shanxi three-dimensional produces with polyvinyl alcohol the ethylene-vinyl acetate being protective colloid; Hydrophober is that Shanxi three-dimensional produces silicone based hydrophober; Calcium stearate chemical formula: Ca (C17H35COO) 2.
The foamed concrete hole distribution measuring above three embodiment components formation is respectively even, and quality is light, and intensity is large and water resistance is remarkable, detection method establishing criteria JC/T1062-2007, and its performance is as table 1:
Table 1
In sum, as shown in Table 1: the formation foam concrete heat-preserving plate of the present invention's three embodiment gained is when dry apparent density is all less than 330kg/m3, in the corresponding standard of ultimate compression strength all between A1.0-A3.5, overcome conflicting of foamed concrete unit weight and ultimate compression strength significantly, accomplish, when unit weight is low, still have good intensity.And standard specifies, dry apparent density≤330kg/m3, thermal conductivity should be less than or equal to 0.08w/mk, and the thermal conductivity of the formation foam concrete heat-preserving plate of three embodiment gained of the present invention is less than standard regulation, all from far away so there is good heat-insulating property.

Claims (6)

1. a foam concrete heat-preserving plate, is characterized in that: count by weight, and warming plate is the cement of 45-250, the mixing of the whipping agent of the adulterant of 10-125,6-30, the water of 40-130, the admixture of 0.8-5.5 and 2-11 properties-correcting agent is built and formed;
Described cement is ordinary Portland cement; Described adulterant is breeze and flyash; Described whipping agent is industrial hydrogen peroxide; Described admixture is polycarboxylate water-reducer, Calucium Silicate powder and sodium sulfate; Described properties-correcting agent is polypropylene fibre, redispersable latex powder, hydrophober and calcium stearate;
Described breeze and flyash mix in mass fraction 1-2:1 ratio; Polycarboxylate water-reducer, Calucium Silicate powder and sodium sulfate mix in mass fraction 1:2:2 ratio; Polypropylene fibre, redispersable latex powder, hydrophober and calcium stearate mix in mass fraction 0.5:1:1:3 ratio;
Count by weight, the water of the adulterant of the cement of 45-250,10-125,40-130, the admixture of 0.8-5.5 and 2-11 properties-correcting agent are stirred 2-3min with 20-40r/min speed mix, then add again 6-30 whipping agent and with the speed mix and blend 0.5-1min of 50-100r/min, discharging is built in a mold, enter pre-solidifying kiln solidifying 1-2h in advance, mixture is foamed complete, wet and cut maintenance, form foam concrete heat-preserving plate.
2. by foam concrete heat-preserving plate according to claim 1, it is characterized in that: in described foam concrete heat-preserving plate, adopt temperature to be the water of 40-50 DEG C.
3. by foam concrete heat-preserving plate according to claim 1, it is characterized in that: described warming plate is cast in mould after being mixed by described raw material and is shaped, the demoulding after being shaped, and fully airing forms, and is foam concrete heat-preserving plate.
4. the preparation method of a foam concrete heat-preserving plate according to claim 1, it is characterized in that: count by weight, the water of the adulterant of the cement of 45-250,10-125,40-130, the admixture of 0.8-5.5 and 2-11 properties-correcting agent are stirred 2-3min with 20-40r/min speed mix, then add again 6-30 whipping agent and with the speed mix and blend 0.5-1min of 50-100r/min, discharging is built in a mold, enter pre-solidifying kiln solidifying 1-2h in advance, mixture is foamed complete, wet and cut maintenance, form foam concrete heat-preserving plate.
5. by the preparation method of foam concrete heat-preserving plate according to claim 4, it is characterized in that: described pre-solidifying kiln temperature is temperature 65 ± 5 DEG C, and humidity >=95%, coagulates 1-2h in advance.
6. by the preparation method of foam concrete heat-preserving plate according to claim 4, it is characterized in that: in described foam concrete heat-preserving plate, adopt temperature to be the water of 40-50 DEG C.
CN201210219555.6A 2012-06-28 2012-06-28 A kind of High-performance foam concrete insulation board and preparation method thereof CN103508711B (en)

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