CN103011879A - Inorganic foaming cement heat insulation board and fabrication method thereof - Google Patents

Inorganic foaming cement heat insulation board and fabrication method thereof Download PDF

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Publication number
CN103011879A
CN103011879A CN2012105595283A CN201210559528A CN103011879A CN 103011879 A CN103011879 A CN 103011879A CN 2012105595283 A CN2012105595283 A CN 2012105595283A CN 201210559528 A CN201210559528 A CN 201210559528A CN 103011879 A CN103011879 A CN 103011879A
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China
Prior art keywords
cement
insulation board
slurry
whipping agent
heat insulation
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CN2012105595283A
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CN103011879B (en
Inventor
王至润
栾宏先
栾永红
王仲华
周铁
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QINGDAO GEERMEI ENVIRONMENTAL PAINT CO Ltd
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QINGDAO GEERMEI ENVIRONMENTAL PAINT CO Ltd
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Priority to CN201210559528.3A priority Critical patent/CN103011879B/en
Publication of CN103011879A publication Critical patent/CN103011879A/en
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Abstract

The invention relates to an inorganic foaming cement heat insulation board and a fabrication method thereof. The inorganic foaming cement heat insulation board comprises cement slurry and foaming agent slurry, wherein the cement slurry comprises the following components by weight percentage: 40-60% of cement, 10-30% of coal ash, 0-20% of nano hollow microbeads and 0-5% of additive, and the weight percentage of the foaming agent slurry is 1-5%. The heat insulation board has the benefits that as an outer heat insulation system product for an outer wall, the inorganic foaming cement heat insulation board is light and fire-proof; the heat insulation property of the inorganic foaming cement heat insulation board is greatly improved; the dead weight is reduced; the safety of the inorganic foaming cement heat insulation board after being arranged on a wall is ensured; and the heat insulation board has the characteristics of environmental protection, economy and the like.

Description

Inorganic foamed cement insulation board and preparation method thereof
Technical field
The present invention relates to a kind of material of construction, be specifically related to a kind of inorganic foamed cement insulation board and preparation method thereof, this inorganic foamed cement insulation board can be used for external thermal insulation system.
Background technology
Along with country more and more payes attention to energy conservation, this just means that not only new building must be energy-conservation up to standard, the reducing energy consumption of existing building also will be gone into overdrive, people are for the Building Energy-saving pay attention to day by day, the enhancing of environmental protection ideas and security consciousness improve gradually, the tradition inorganic heat-insulation board exists density large, and thermal conductivity is large, the shortcoming that heat insulation effect is poor and problem.For example: the density of lightweight expansion pearlite heat-insulation plate is at 400~600kg/m 3, density is too little just not to have had intensity, and heat insulation effect can be quite a lot of certainly; If density is too large, heat insulation effect is just poor, and intensity is just large.Also have inorganic heat insulation mortar also to have such problem, and the water-intake rate of this series products being all larger, mainly is because the water-intake rate of perlite self is too large, self 200~300 times.
Summary of the invention
In order to solve problems of the prior art, the present invention aims to provide a kind of inorganic foamed cement insulation board and preparation method thereof.
Require ultimate compression strength more than or equal to 0.4MPa according to the performance index to the foam cement plate in the DBJ/T14-085-2012 external wall outer insulation utilisation technology rules (foaming cement thermal insulation plate exterior wall external heat preservation system), thermal conductivity is less than or equal to 0.069W/ (mk), the ultimate compression strength of inorganic foamed cement insulation board of the present invention is more than or equal to 0.4MPa, and thermal conductivity is less than or equal to 0.045W/ (mk).
Technical scheme of the present invention is:
Inorganic foamed cement insulation board, comprise the cement slurry and the whipping agent slurry that are formed by cement, flyash, hollow nano microballon, additive, its component and weight percent are cement 40-60%, flyash 10-30%, hollow nano microballon 0-20%, additive 0-5%, whipping agent slurry are 1-5%.
Described cement adopts 42.5R silicate cement or 42.5 aluminosulfate cements.
Described flyash adopts I level flyash, and granularity is more than 325 orders.
Described hollow nano microballon granularity is 4-5nm, and hollow rate is more than 80%.
Described additive comprises water-holding agent, hardening accelerator, water reducer, anti-fissuring agent, strengthening agent, and the weight adding proportion is (2-5): (3-10): (3-6): (3-15): (3-8).
Described whipping agent slurry is: animal protein foaming agent or vegetable-protein whipping agent.
The present invention also provides a kind of method for preparing inorganic foamed cement insulation board, the steps include:
1) with measuring apparatus with proportionally accurate measurement of material;
2) under the 1500-2000rpm rotating speed stirs, cement dropped into and stir 5-30min in the mixing and blending machine;
3) rotating speed is transferred to the 1200-1500rpm rotating speed, in mixing and blending machine, drop into additive, stir 5-30min;
4) after the 5-20min additive is uniformly dispersed, rotating speed is transferred to 1500-1700rpm, drop into flyash, hollow nano microballon, in mixing and blending machine, stir 5-30min and make cement slurry;
5) whipping agent slurry preparation: whipping agent and water mixed in 1: 25 ratio get final product.
6) make the whipping agent foaming by the special-purpose foaming machine, the whipping agent slurry for preparing is sent uniform bubble Droplets by foaming machine (KT-20 screw rod pumped type cement foam maker), the bubble Droplets that again cement slurry and whipping agent is sent adds in the agitator in the density ratio that designs and stirs, the cement mixing slurry with bubble Droplets that will stir is at last poured die for molding into, namely can be made into inorganic foamed cement insulation board.
The invention has the beneficial effects as follows:
Inorganic foamed cement insulation board is as the external thermal insulation system product, adopt the hollow nano microballon, the novel materials such as active nano silicon-dioxide, not only reduced the weight of inorganic foamed cement insulation board self, also participated in the hydration reaction of cement, generate silicate and cement itself is played the effect of gaining in strength, cement special-purpose water-proof powder in addition again, reduce the water-absorbent of material so that the inorganic foamed cement insulation board lightweight, fire prevention, also greatly improved the heat-insulating property of inorganic foamed cement insulation board, reduced the weight of self, not only solve the security behind the wall on the inorganic foamed cement insulation board, and had environmental protection, the economic dispatch characteristics;
Electrodeless foaming cement thermal insulation plate of the present invention, dry density≤180kg/m 3, ultimate compression strength 〉=0.45Mpa, folding strength 〉=0.15Mpa, water ratio≤1.4%, volume water absorption rate≤9.9%, thermal conductivity≤0.040W/ (mK), drying shrinkage value≤1.65mm/m, coefficient of softening 〉=0.85, combustionproperty is not less than the A2 level.
Embodiment
The present invention is described in more detail below in conjunction with embodiment.
Embodiment 1:
1) with measuring apparatus with proportionally accurate measurement of material;
Be 42.5R silicate cement 60% with material according to weight percent, I level flyash 10%, hollow nano microballon 20%, additive 5%, whipping agent slurry are 5% accurate measurement;
2) under the 1500-2000rpm rotating speed stirs, cement dropped into and stir 5-30min in the mixing and blending machine;
3) rotating speed is transferred to the 1200-1500rpm rotating speed, in mixing and blending machine, drop into additive, stir 5-30min;
Consisting of of additive: water-holding agent, hardening accelerator, water reducer, anti-fissuring agent, strengthening agent, weight adding proportion are 5: 10: 6: 15: 8;
4) after the 5-20min additive is uniformly dispersed, rotating speed is transferred to 1500-1700rpm, drop into flyash, hollow nano microballon, in mixing and blending machine, stir 5-30min and make cement slurry;
5) whipping agent slurry preparation: whipping agent and water mixed in 1: 25 ratio get final product.
6) make the whipping agent foaming by the special-purpose foaming machine, the whipping agent slurry for preparing is sent uniform bubble Droplets by foaming machine (KT-20 screw rod pumped type cement foam maker), the bubble Droplets that again cement slurry and whipping agent is sent adds in the agitator in the density ratio that designs and stirs, the cement mixing slurry with bubble Droplets that will stir is at last poured die for molding into, namely can be made into inorganic foamed cement insulation board.
Technical indicator is: dry density 176kg/m 3, ultimate compression strength 0.47Mpa, folding strength 0.17Mpa, water ratio 1.3%, volume water absorption rate 9.6%, thermal conductivity 0.040W/ (mK), drying shrinkage value 1.5mm/m, coefficient of softening 0.9, combustionproperty is not less than the A2 level.
Embodiment 2
1) with measuring apparatus with proportionally accurate measurement of material;
Be 42.5 aluminosulfate cements 40% with material according to weight percent, I level flyash 30%, hollow nano microballon 20%, additive 5%, whipping agent slurry are 5% accurate measurement;
2) under the 1500-2000rpm rotating speed stirs, cement dropped into and stir 5-30min in the mixing and blending machine;
3) rotating speed is transferred to the 1200-1500rpm rotating speed, in mixing and blending machine, drop into additive, stir 5-30min;
Consisting of of additive: water-holding agent, hardening accelerator, water reducer, anti-fissuring agent, strengthening agent, weight adding proportion are 2: 3: 3: 3: 3;
4) after the 5-20min additive is uniformly dispersed, rotating speed is transferred to 1500-1700rpm, drop into flyash, hollow nano microballon, in mixing and blending machine, stir 5-30min and make cement slurry;
5) whipping agent slurry preparation: whipping agent and water mixed in 1: 25 ratio get final product.
6) make the whipping agent foaming by the special-purpose foaming machine, the whipping agent slurry for preparing is sent uniform bubble Droplets by foaming machine (KT-20 screw rod pumped type cement foam maker), the bubble Droplets that again cement slurry and whipping agent is sent adds in the agitator in the density ratio that designs and stirs, the cement mixing slurry with bubble Droplets that will stir is at last poured die for molding into, namely can be made into inorganic foamed cement insulation board.
Technical indicator is: dry density 175kg/m 3, ultimate compression strength 0.51Mpa, folding strength 0.18Mpa, water ratio 1.2%, volume water absorption rate 9.5%, thermal conductivity 0.039W/ (mK), drying shrinkage value 1.6mm/m, coefficient of softening 0.95, combustionproperty is not less than the A2 level.
Embodiment 3
1) with measuring apparatus with proportionally accurate measurement of material;
Be 42.5 aluminosulfate cements 50% with material according to weight percent, I level flyash 22%, hollow nano microballon 18%, additive 5%, whipping agent slurry are 5% accurate measurement;
2) under the 1500-2000rpm rotating speed stirs, cement dropped into and stir 5-30min in the mixing and blending machine;
3) rotating speed is transferred to the 1200-1500rpm rotating speed, in mixing and blending machine, drop into additive, stir 5-30min;
Consisting of of additive: water-holding agent, hardening accelerator, water reducer, anti-fissuring agent, strengthening agent, weight adding proportion are 3: 5: 4: 7: 6;
4) after the 5-20min additive is uniformly dispersed, rotating speed is transferred to 1500-1700rpm, drop into flyash, hollow nano microballon, in mixing and blending machine, stir 5-30min and make cement slurry;
5) whipping agent slurry preparation: whipping agent and water mixed in 1: 25 ratio get final product.
6) make the whipping agent foaming by the special-purpose foaming machine, the whipping agent slurry for preparing is sent uniform bubble Droplets by foaming machine (KT-20 screw rod pumped type cement foam maker), the bubble Droplets that again cement slurry and whipping agent is sent adds in the agitator in the density ratio that designs and stirs, the cement mixing slurry with bubble Droplets that will stir is at last poured die for molding into, namely can be made into inorganic foamed cement insulation board.
Make whipping agent foaming by the special-purpose foaming machine, mix with slurry according to volume and make warming plate, the ultimate compression strength 0.48MPa of inorganic foamed cement insulation board, thermal conductivity 0.037W/ (mk) sending out a good bubble.
Technical indicator is: dry density 178kg/m 3, ultimate compression strength 0.48Mpa, folding strength 0.16Mpa, water ratio 1.2%, volume water absorption rate 9.3%, thermal conductivity 0.037W/ (mK), drying shrinkage value 1.48mm/m, coefficient of softening 0.93, combustionproperty is not less than the A2 level.
Following table is the technical indicator contrast table of expanded perlite thermal-nsulation plate or foaming cement thermal insulation plate different materials in inorganic foamed cement insulation board of the present invention and the prior art:
Test item The expanded perlite thermal-nsulation plate The foaming cement thermal insulation plate Inorganic foamed cement insulation board
Dry density, kg/m 3 350 250 ≤180
Ultimate compression strength, MPa 0.64 0.41 ≥0.45
Folding strength, MPa 0.35 0.13 ≥0.15
Water ratio, % 1.3 1.2 ≤1.4
The volume water absorption rate, % 14.7 9.8 ≤9.9
Thermal conductivity, W/ (mK) 0.072 0.065 ≤0.040
Drying shrinkage value, mm/m 0.5 1.87 ≤1.65
Coefficient of softening 0.63 0.81 0.85
Combustionproperty Be not less than the A2 level Be not less than the A2 level Be not less than the A2 level

Claims (7)

1. inorganic foamed cement insulation board, comprise the cement slurry and the whipping agent slurry that are formed by cement, flyash, hollow nano microballon, additive, its component and weight percent are cement 40-60%, flyash 10-30%, hollow nano microballon 0-20%, additive 0-5%, whipping agent slurry are 1-5%.
2. inorganic foamed cement insulation board as claimed in claim 1 is characterized in that, described cement adopts 42.5R silicate cement or 42.5 aluminosulfate cements.
3. inorganic foamed cement insulation board as claimed in claim 1 is characterized in that, described flyash adopts I level flyash, and granularity is more than 325 orders.
4. inorganic foamed cement insulation board as claimed in claim 1 is characterized in that, described hollow nano microballon granularity is 4-5nm, and hollow rate is more than 80%.
5. inorganic foamed cement insulation board as claimed in claim 1, it is characterized in that, described additive comprises water-holding agent, hardening accelerator, water reducer, anti-fissuring agent, strengthening agent, and the weight adding proportion is (2-5): (3-10): (3-6): (3-15): (3-8).
6. inorganic foamed cement insulation board as claimed in claim 1 is characterized in that, described whipping agent slurry is: animal protein foaming agent or vegetable-protein whipping agent.
7. a method for preparing inorganic foamed cement insulation board as claimed in claim 1 the steps include:
1) with measuring apparatus with proportionally accurate measurement of material;
2) under the 1500-2000rpm rotating speed stirs, cement dropped into and stir 5-30min in the mixing and blending machine;
3) rotating speed is transferred to the 1200-1500rpm rotating speed, in mixing and blending machine, drop into additive, stir 5-30min;
4) after the 5-20min additive is uniformly dispersed, rotating speed is transferred to 1500-1700rpm, drop into flyash, hollow nano microballon, in mixing and blending machine, stir 5-30min and make cement slurry;
5) whipping agent slurry preparation: whipping agent and water mixed in 1: 25 ratio get final product.
6) make the whipping agent foaming by the special-purpose foaming machine, the whipping agent slurry for preparing is sent uniform bubble Droplets by foaming machine (KT-20 screw rod pumped type cement foam maker), the bubble Droplets that again cement slurry and whipping agent is sent adds in the agitator in the density ratio that designs and stirs, the cement mixing slurry with bubble Droplets that will stir is at last poured die for molding into, namely can be made into inorganic foamed cement insulation board.
CN201210559528.3A 2012-12-21 2012-12-21 Inorganic foaming cement heat insulation board and fabrication method thereof Active CN103011879B (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105294031A (en) * 2015-11-20 2016-02-03 天津市房信节能建材科技有限公司 Aluminate cement based foamed thermal insulation plate and preparation method thereof
CN105350705A (en) * 2015-09-25 2016-02-24 青岛金美文化传播有限公司 Fiber cement composite board and preparation method
CN106396732A (en) * 2016-08-29 2017-02-15 王劲松 High-strength, light-weight and heat-insulation wallboard and production method thereof
CN106854087A (en) * 2016-11-10 2017-06-16 安徽新盾消防设备有限公司 Inorganic fireproof heat insulating board for exterior walls
CN107324720A (en) * 2017-07-19 2017-11-07 合肥广民建材有限公司 A kind of Novel foaming cement warming plate and preparation method thereof
CN108314382A (en) * 2018-02-27 2018-07-24 合肥帧讯低温科技有限公司 A kind of Novel foaming cement thermal insulation board and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102351478A (en) * 2011-07-18 2012-02-15 南通市华夏硅酸盐制品有限公司 Inorganic particle foam concrete composite insulation board
CN102731024A (en) * 2011-04-07 2012-10-17 李东健 A thermal-insulation fireproof insulation board

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102731024A (en) * 2011-04-07 2012-10-17 李东健 A thermal-insulation fireproof insulation board
CN102351478A (en) * 2011-07-18 2012-02-15 南通市华夏硅酸盐制品有限公司 Inorganic particle foam concrete composite insulation board

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105350705A (en) * 2015-09-25 2016-02-24 青岛金美文化传播有限公司 Fiber cement composite board and preparation method
CN105294031A (en) * 2015-11-20 2016-02-03 天津市房信节能建材科技有限公司 Aluminate cement based foamed thermal insulation plate and preparation method thereof
CN106396732A (en) * 2016-08-29 2017-02-15 王劲松 High-strength, light-weight and heat-insulation wallboard and production method thereof
CN106854087A (en) * 2016-11-10 2017-06-16 安徽新盾消防设备有限公司 Inorganic fireproof heat insulating board for exterior walls
CN107324720A (en) * 2017-07-19 2017-11-07 合肥广民建材有限公司 A kind of Novel foaming cement warming plate and preparation method thereof
CN108314382A (en) * 2018-02-27 2018-07-24 合肥帧讯低温科技有限公司 A kind of Novel foaming cement thermal insulation board and preparation method thereof

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