CN111440008A - Passive room heat-insulating wallboard and preparation method thereof - Google Patents
Passive room heat-insulating wallboard and preparation method thereof Download PDFInfo
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- CN111440008A CN111440008A CN202010466178.0A CN202010466178A CN111440008A CN 111440008 A CN111440008 A CN 111440008A CN 202010466178 A CN202010466178 A CN 202010466178A CN 111440008 A CN111440008 A CN 111440008A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/08—Slag cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Building Environments (AREA)
Abstract
The invention discloses a passive house heat-insulating wallboard which is prepared from the following raw materials in parts by weight: 50-70 parts of construction waste; 5-10 parts of furnace slag; 1-3 parts of talcum powder; 5-10 parts of glass cellulose; 3-5 parts of a foaming agent; 15-20 parts of river sand; 1-3 parts of hydroxyethyl cellulose; 0.3-0.5 part of calcium lignosulphonate. The preparation method comprises the following steps: (1) weighing the raw materials; (2) placing the construction waste, the furnace slag, the talcum powder and the glass cellulose into a ball mill for fine grinding; (3) adding hydroxyethyl cellulose, a foaming agent and water, and stirring in a stirring device; foaming; (4) and mixing the foaming slurry with river sand and wood calcium, uniformly stirring to obtain a mixture, putting the mixture into a mould to prepare a blank, and performing steam curing on the blank to obtain a finished product of the heat-insulating wallboard. The product of the invention has the advantages of light weight, heat insulation, good flame retardant property and excellent water resistance, and particularly conforms to the application of passive house buildings and the application of indoor sound insulation, heat preservation and the like of civil buildings; meanwhile, the manufacturing process is simple, the cost is low, and the method is suitable for large-area production and popularization.
Description
Technical Field
The invention relates to the technical field of building materials of passive houses, in particular to a heat-insulating wallboard of a passive house and a preparation method thereof.
Background
With the rapid development of global economy, the problem of energy shortage is increasingly prominent, and energy conservation becomes a life concept advocated by various countries. In recent years, our country has made higher and higher demands for energy conservation and environmental protection of new buildings, and therefore, the concept of passive houses has been proposed and rapidly developed in recent years.
Therefore, high requirements are provided for various functions of materials of the passive building, and the materials not only have the functions of heat preservation and heat insulation, but also have the requirements of good sound insulation effect and high fire-proof grade. The traditional heat insulation materials for buildings comprise cement vermiculite, cement perlite, overhead heat insulation boards and aerated concrete blocks, and although the heat insulation materials can play a certain role in heat insulation, the heat insulation materials have the defects of higher price, poorer moisture resistance and waterproof performance, and particularly the aerated concrete blocks have the problem of wasting land resources and energy. At present, the trend is to use waste foamed plastics and cement as raw materials to manufacture heat-insulating wall boards, but most of the heat-insulating materials are simply mixed of two raw materials, so that the heat-insulating wall boards or wall bricks manufactured by the heat-insulating wall boards or wall bricks have heat-insulating performance and waterproof and fireproof performance which do not meet the requirements of building engineering on the performance of heat-insulating materials.
Therefore, the technical personnel in the field need to solve the problem of how to provide a passive room thermal insulation wallboard with energy saving, environmental protection, excellent thermal insulation performance and waterproof and fireproof performance.
Disclosure of Invention
In view of the above, the invention provides a passive room thermal insulation wallboard and a manufacturing method thereof, which have the characteristics of light weight, heat insulation, good flame retardant property and water resistance, and the like, have long service life, and particularly meet the application of passive room buildings and indoor thermal insulation of civil buildings.
In order to achieve the purpose, the invention adopts the following technical scheme:
a passive room heat-insulating wallboard is prepared from the following raw materials in parts by weight: 50-70 parts of construction waste; 5-10 parts of furnace slag; 1-3 parts of talcum powder; 5-10 parts of glass cellulose; 3-5 parts of a foaming agent; 15-20 parts of river sand; 1-3 parts of hydroxyethyl cellulose; 0.3-0.5 part of calcium lignosulphonate.
Preferably, in the passive house heat insulation wallboard, the heat insulation wallboard is prepared from the following raw materials in parts by weight: 60 parts of construction waste; 8 parts of furnace slag; 2 parts of talcum powder; 7 parts of glass cellulose; 4 parts of a foaming agent; 20 parts of river sand; 2 parts of hydroxyethyl cellulose; 0.4 part of calcium lignosulphonate.
Preferably, in the passive room thermal insulation wallboard, the construction waste is calcined and crushed inorganic construction waste.
A preparation method of a passive house heat-insulation wallboard specifically comprises the following steps:
(1) weighing the raw materials according to the parts by weight of the passive room heat-insulation wallboard;
(2) placing the construction waste, the furnace slag, the talcum powder and the glass cellulose into a ball mill together for fine grinding to obtain a fine-ground mixed dry material;
(3) putting the finely ground mixed dry material, hydroxyethyl cellulose, a foaming agent and water into stirring equipment for fully stirring, and foaming at the temperature of 80-90 ℃ for 60-80 min to obtain foaming slurry;
(4) and mixing the foaming slurry with river sand and wood calcium, uniformly stirring to obtain a mixture, putting the mixture into a mould to prepare a blank, and performing steam curing on the blank to obtain a finished product of the heat-insulating wallboard.
Preferably, in the preparation method of the passive house heat-insulating wallboard, in the step (2), the construction waste, the slag, the talcum powder and the glass cellulose are put into a ball mill together for fine grinding for 1-2 hours; the particle size of the fine grinding mixed dry material is controlled to be 1-3 mm.
Preferably, in the above preparation method of the passive house thermal insulation wallboard, in the step (2), the construction waste, the slag, the talcum powder and the glass cellulose are put into a ball mill together for fine grinding for 1.5 hours; the particle size of the fine grinding mixed dry material is controlled to be 2 mm.
Preferably, in the above preparation method of the heat-insulating wallboard for the passive building, in the step (3), the finely ground mixed dry material, the foaming agent, the hydroxyethyl cellulose and the water are put into a stirring device to be fully stirred, and the stirring speed is 700-.
Preferably, in the preparation method of the passive house heat-insulating wallboard, in the step (4), the mixture is injected into a forming mold to form a green body, the temperature in the forming mold is raised to 110-130 ℃, the temperature raising time is 1-1.5 hours, the temperature is kept for 0.5-1 hour, the temperature is lowered to 40-50 ℃, the temperature is kept for 1.3-2 hours, and the green body is subjected to steam curing to obtain a heat-insulating wallboard finished product.
According to the technical scheme, compared with the prior art, the invention provides the passive room heat-insulation wallboard and the preparation method thereof, and the passive room heat-insulation wallboard has the following beneficial effects:
1. the construction waste and the furnace slag are selected as main raw materials of the heat-insulating wall board, and the conditions of large quantity and low utilization rate of inorganic waste of the construction in China are combined; and the construction waste and the furnace slag are mixed for use, so that the reutilization of the furnace slag is realized, the defects that fields are occupied by waste slag and the environment is polluted are avoided, the waste is changed into valuable, and the environment is more environment-friendly.
2. Glass cellulose is added into the construction waste and the filter residue in a certain proportion, so that the mechanical strength, heat resistance and corrosion resistance of the passive house wall are greatly enhanced; hydroxyethyl cellulose is added into the construction waste, the filter residue and the glass cellulose in a certain proportion, so that the bonding strength of the mixed material is increased, the shrinkage resistance and the cracking resistance of the heat-insulating wallboard are improved, and the surface quality and the seismic resistance of the heat-insulating wallboard are improved.
3. The wood calcium is added in the blank making process, so that the water consumption can be reduced by more than 10%, and meanwhile, the dispersibility of the blank making mixture is improved, so that the surface of the heat-insulating wallboard is smoother, and the structure is more uniform.
4. Compared with the prior art, the technical scheme of the invention has the advantages of light weight, heat insulation, good flame retardant property and excellent water resistance, and meanwhile, the invention has the advantages of simple manufacturing process, low cost and convenient installation, and is suitable for large-area production and popularization.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The passive house heat-insulating wallboard is prepared from the following raw materials in parts by weight: 50kg of construction waste; 5kg of furnace slag; 1kg of talcum powder; 5kg of glass cellulose; 3kg of foaming agent; 15kg of river sand; 1kg of hydroxyethyl cellulose; 0.3kg of calcium lignosulphonate.
The preparation method specifically comprises the following steps:
(1) weighing the raw materials according to the weight of the passive room heat-insulation wallboard;
(2) placing the construction waste, the furnace slag, the talcum powder and the glass cellulose into a ball mill together for fine grinding for 1h to obtain a fine-ground mixed dry material; controlling the fine grinding mixed dry material to be 3 mm;
(3) placing the finely ground mixed dry material, hydroxyethyl cellulose, a foaming agent and water into stirring equipment, fully stirring at the stirring speed of 700r/s, and foaming at the temperature of 80 ℃ for 80min to obtain foaming slurry;
(4) and mixing the foaming slurry with river sand and calcium lignosulfonate, uniformly stirring to obtain a mixture, injecting the mixture into a forming mold to form a green body, heating the forming mold to 110 ℃, keeping the temperature for 1.5 hours, cooling to 40 ℃, keeping the temperature for 2 hours, and performing steam curing on the green body to obtain a finished product of the heat-insulating wallboard.
Example 2
The passive house heat-insulating wallboard is prepared from the following raw materials in parts by weight: 60kg of construction waste; 8kg of furnace slag; 2kg of talcum powder; 7kg of glass cellulose; 4kg of foaming agent; 20kg of river sand; 2kg of hydroxyethyl cellulose; 0.4kg of calcium lignosulphonate.
The preparation method specifically comprises the following steps:
(1) weighing the raw materials according to the weight of the passive room heat-insulation wallboard;
(2) placing the construction waste, the furnace slag, the talcum powder and the glass cellulose into a ball mill together for fine grinding for 2 hours to obtain a fine-ground mixed dry material; controlling the fine grinding mixed dry material to be 1 mm;
(3) putting the finely ground mixed dry material, hydroxyethyl cellulose, a foaming agent and water into stirring equipment, fully stirring at the stirring speed of 750r/s, and foaming at the temperature of 85 ℃ for 70min to obtain foaming slurry;
(4) and mixing the foaming slurry with river sand and calcium lignosulfonate, uniformly stirring to obtain a mixture, injecting the mixture into a forming mold to form a green body, heating the forming mold to 120 ℃, keeping the temperature for 1.3 hours, keeping the temperature for 0.8 hour, cooling to 45 ℃, keeping the temperature for 1.6 hours, and performing steam curing on the green body to obtain a finished product of the heat-insulating wallboard.
Example 3
The passive house heat-insulating wallboard is prepared from the following raw materials in parts by weight: 70kg of construction waste; 10kg of slag; 3kg of talcum powder; 10kg of glass cellulose; 5kg of foaming agent; 18kg of river sand; 3kg of hydroxyethyl cellulose; 0.5kg of calcium lignosulphonate.
The preparation method specifically comprises the following steps:
(1) weighing the raw materials according to the weight of the passive room heat-insulation wallboard;
(2) placing the construction waste, the furnace slag, the talcum powder and the glass cellulose into a ball mill together for fine grinding for 1.5 hours to obtain a fine-ground mixed dry material; controlling the fine grinding mixed dry material to be 2 mm;
(3) putting the finely ground mixed dry material, hydroxyethyl cellulose, a foaming agent and water into stirring equipment, fully stirring at the stirring speed of 800r/s, and foaming at the temperature of 90 ℃ for 60min to obtain foaming slurry;
(4) and mixing the foaming slurry with river sand and calcium lignosulfonate, uniformly stirring to obtain a mixture, injecting the mixture into a forming mold to form a green body, heating the inside of the forming mold to 130 ℃, keeping the temperature for 1 hour, keeping the temperature for 0.5 hour, cooling to 50 ℃, keeping the temperature for 1.3 hours, and performing steam curing on the green body to obtain a finished product of the heat-insulating wallboard.
Performance testing
The heat conductivity coefficient of the passive room biomass wallboard finished products prepared in the embodiments 1-3 is tested according to GB/T10294-.
Table 1 passive house biomass wallboard finished product performance test results
As can be seen from table 1, the heat conductivity, flame retardant rating, tensile strength and elongation at break of the biomass wallboard finished products of the passive houses prepared in the embodiments 1 to 3 of the present invention all meet the relevant regulations, wherein the embodiment 2 is the best embodiment.
In conclusion, the biomass wallboard for the passive house, prepared by the invention, has the characteristics of good heat insulation and flame retardant properties and excellent water resistance, and meets the requirements of the use of passive house buildings and the application of indoor sound insulation, heat preservation and the like of civil buildings.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The passive house heat-insulation wallboard is characterized by being prepared from the following raw materials in parts by weight: 50-70 parts of construction waste; 5-10 parts of furnace slag; 1-3 parts of talcum powder; 5-10 parts of glass cellulose; 3-5 parts of a foaming agent; 15-20 parts of river sand; 1-3 parts of hydroxyethyl cellulose; 0.3-0.5 part of calcium lignosulphonate.
2. The passive house heat-insulating wallboard according to claim 1 is characterized by being prepared from the following raw materials in parts by weight: 60 parts of construction waste; 8 parts of furnace slag; 2 parts of talcum powder; 7 parts of glass cellulose; 4 parts of a foaming agent; 20 parts of river sand; 2 parts of hydroxyethyl cellulose; 0.4 part of calcium lignosulphonate.
3. The heat-insulating wallboard for the passive house as claimed in claim 1, wherein the construction waste is calcined and crushed inorganic construction waste.
4. A preparation method of a passive house heat-insulation wallboard is characterized by comprising the following steps:
(1) weighing the raw materials according to the parts by weight of the passive room thermal insulation wallboard of any one of claims 1-3;
(2) placing the construction waste, the furnace slag, the talcum powder and the glass cellulose into a ball mill together for fine grinding to obtain a fine-ground mixed dry material;
(3) putting the finely ground mixed dry material, hydroxyethyl cellulose, a foaming agent and water into stirring equipment for fully stirring, and foaming at the temperature of 80-90 ℃ for 60-80 min to obtain foaming slurry;
(4) and mixing the foaming slurry with river sand and wood calcium, uniformly stirring to obtain a mixture, putting the mixture into a mould to prepare a blank, and performing steam curing on the blank to obtain a finished product of the heat-insulating wallboard.
5. The preparation method of the heat-insulating wallboard for the passive house as claimed in claim 4, wherein in the step (2), the construction waste, the slag, the talcum powder and the glass cellulose are put into a ball mill together for fine grinding for 1-2 h; the particle size of the fine grinding mixed dry material is controlled to be 1-3 mm.
6. The method for preparing the heat-insulating wallboard for the passive house according to the claim 5, characterized in that in the step (2), the construction waste, the slag, the talcum powder and the glass cellulose are put into a ball mill together for fine grinding for 1.5 h; the particle size of the fine grinding mixed dry material is controlled to be 2 mm.
7. The method for preparing the heat-insulating wallboard for the passive house as claimed in claim 4, wherein in the step (3), the finely ground mixed dry material, the foaming agent, the hydroxyethyl cellulose and the water are put into a stirring device to be fully stirred, and the stirring speed is 700-.
8. The preparation method of the heat-insulating wallboard for the passive house as claimed in claim 4, wherein in the step (4), the mixture is injected into a forming die to form a green body, the temperature in the forming die is raised to 110-130 ℃, the temperature is raised for 1-1.5 hours, the temperature is kept for 0.5-1 hour, then the temperature is lowered to 40-50 ℃, the temperature is kept for 1.3-2 hours, and the green body is subjected to steam curing to obtain a finished product of the heat-insulating wallboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010466178.0A CN111440008A (en) | 2020-05-28 | 2020-05-28 | Passive room heat-insulating wallboard and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010466178.0A CN111440008A (en) | 2020-05-28 | 2020-05-28 | Passive room heat-insulating wallboard and preparation method thereof |
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| CN111440008A true CN111440008A (en) | 2020-07-24 |
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| CN202010466178.0A Pending CN111440008A (en) | 2020-05-28 | 2020-05-28 | Passive room heat-insulating wallboard and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114671643A (en) * | 2022-03-21 | 2022-06-28 | 仲才元 | Building heat-insulation wallboard and preparation method thereof |
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| CN104387109A (en) * | 2014-10-09 | 2015-03-04 | 合肥向荣环保科技有限公司 | Municipal inorganic refuse-containing thermal insulation plate |
| CN107721325A (en) * | 2017-11-28 | 2018-02-23 | 山西华通蓝天环保有限公司 | A kind of ultra-fine clinker micropowder light Self-insulation wall plate and its binding agent |
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2020
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| JP2004292285A (en) * | 2003-03-28 | 2004-10-21 | Taiheiyo Cement Corp | Concrete |
| CN101298371A (en) * | 2007-05-01 | 2008-11-05 | 李东升 | Light insulating brick prepared from fly ash, boiler slag, construction garbage and straw and preparation thereof |
| CN101239813A (en) * | 2007-12-29 | 2008-08-13 | 北京恒业村科技有限公司 | Heat-insulating board prepared from building garbage and preparation method thereof |
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| CN115724686A (en) * | 2022-03-21 | 2023-03-03 | 仲才元 | Preparation method of building heat-insulation wallboard |
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