CN105174895B - A kind of preparation method of light-weight water-proof thermal insulation material used for building exterior wall - Google Patents
A kind of preparation method of light-weight water-proof thermal insulation material used for building exterior wall Download PDFInfo
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Abstract
The present invention relates to a kind of light-weight water-proof thermal insulation material used for building exterior wall and preparation method thereof, by modified coal ash 100 150,30 50 parts of desulfurated plaster, 20 30 parts of foam glass, 58 parts of alkali-activator, 10 15 parts of cement, 6 10 parts of sepiolite fibre, 5 10 parts of hydroxyethylmethylcellulose, 12 parts of calcium acrylate；1 1.5 parts of hydrophobing agent, 1.5 2.5 parts of water-reducing agent, 24 parts of polysiloxanes, 20 25 parts of foaming agent prepare material, are prepared by step (1) modified coal ash, prepared by (2) premix, (3) are prepared into the preparation method that foamed slurry, (4) pouring molding, (5) stand foaming demould and product is made;By this programme, using high-calcium fly ass, desulfurated plaster as raw material, under alkali-activator effect, recycling for industrial solid castoff is realized；So as to provide, a kind of compression strength is big and purely inorganic material with excellent waterproof thermal-insulated performance.
Description
Technical field
The present invention relates to a kind of construction material, more particularly to a kind of preparation of light-weight water-proof thermal insulation material used for building exterior wall
Method.
Background technology
In the prior art, general building thermal insulation material is broadly divided into organic material and inorganic material, in organic material,
Such as styrofoam, polyurethane, rubber powder granule etc.；In inorganic material, such as air entrained concrete, rock wool, glass bead.
The current building heat preservation product in China is mainly organic material class, be because organic material class product have it is light,
The advantages of thermal conductivity factor is low, heat insulation effect is good, is widely used in north cold area.
External-wall heat-insulation material generally is required with water resistance, because thermal insulation material is generally porous material, if hair
Raw leakage inner inlet, by as the medium that material is kept the temperature is destroyed, heat is scattered and disappeared rapidly water by the conduction of medium water, makes guarantor
Adiabator loses the effect of heat preservation, and the water-proof heat-insulation material generally used currently on the market is mostly using polyurethane, polystyrene
Wait organic polymers and inorganic material carry out it is compound be made, but there are the problems such as compression strength is low, cementitiousness is poor, inflammable,
Therefore it provides a kind of compression strength is big, there is the purely inorganic material of excellent waterproof thermal-insulated performance will have a very important significance.
Invention content
In view of this, the main purpose of invention is to provide a kind of preparation side of light-weight water-proof thermal insulation material used for building exterior wall
Method is raw material using high-calcium fly ass, desulfurated plaster by the technical program, under alkali-activator effect, obtains with higher
The thermal insulation material of compression strength by adding in foam glass, can be obtained under foaming agent effect with cavernous material, into
One step improves heat insulation effect, and under the effect of dodecyltrimethoxysilane hydrophobing agent, assigns material and prevents with excellent
Aqueous energy.
In order to achieve the above object, the technical proposal of the invention is realized in this way.
A kind of light-weight water-proof thermal insulation material used for building exterior wall, following material are made by following parts by weight:
Modified coal ash 100-150,30-50 parts of desulfurated plaster, 20-30 parts of foam glass, 5-8 parts of alkali-activator, cement
10-15 parts, 6-10 parts of sepiolite fibre, 5-10 parts of hydroxyethylmethylcellulose, 1-2 parts of calcium acrylate；1-1.5 parts of hydrophobing agent,
1.5-2.5 parts of water-reducing agent, 2-4 parts of polysiloxanes, 20-25 parts of foaming agent.
As further technical solution, the modified coal ash is by high-calcium fly ass, modifying agent, ethanol water, salt
Acid solution is prepared.
Calcareous content >=14% in the high-calcium fly ass.
The modifying agent is vinyl octadecyl dimethoxysilane.
The Mixing ratio by weight example of mixture of the alkali-activator for quick lime and sodium metasilicate, quick lime and sodium metasilicate is 1:
1。
The cement is early-strength 42.5R portland slag cements.
The hydrophobing agent is dodecyltrimethoxysilane.
The water-reducing agent is polycarboxylic acids.
The foaming agent is a concentration of 10% industrial hydrogen peroxide solution.
A kind of preparation method of light-weight water-proof thermal insulation material used for building exterior wall, is made according to the following steps：
(1) prepared by modified coal ash：
It is 2 to prepare with high-calcium fly ass weight ratio:3 ethanol water, with the hydrochloric acid solution of 0.1M adjust pH value to
4.0, high-calcium fly ass is dispersed in above-mentioned solution, in 40 °C of water-bath under the rotating speed stirring of 600r/min, dropwise
It is 1 to add in high-calcium fly ass weight ratio：100 vinyl octadecyl dimethoxysilane continues to stir 1h after the completion, most
It afterwards by filtering, washing, fully dry, pulverize under 80 °C, obtain modified coal ash；
(2) prepared by premix：
Weigh 100-150 parts of modified coal ash, 30-50 parts of desulfurated plaster, 20-30 parts of foam glass, alkali-activator 5-8
Part, 10-15 parts of cement, 6-10 parts of sepiolite fibre, 5-10 parts of hydroxyethylmethylcellulose, the high-speed stirred at a temperature of 40 °C
With 400r/min mixs 2 minutes in machine, it is uniformly mixed and obtains premix；
(3) it is prepared into foamed slurry：
Successively add in 1-2 parts of calcium acrylate, 1-1.5 parts of hydrophobing agent, water-reducing agent in order in the premix of step (2)
1.5-2.5 parts, 2-4 parts of polysiloxanes, 20-25 parts of foaming agent, under 600r/min rotating speeds stir 5min obtain foamed slurry；
(4) pouring molding：
Slurry prepared by step (3) is poured into molding mold, is 60% in relative humidity, environment temperature is 37 °
Middle stand foaming molding in the environment of C；
(5) stand foaming demoulds：
After 24 hours, it is 22 °C in temperature, relative humidity carries out demoulding maintenance under the conditions of being 70%, maintenance is surveyed after 28 days
Its compression strength and heat-insulating property index are tried, warehouse for finished product is transferred to after qualified.
It is using the advantageous effect after above-mentioned technical proposal：A kind of light-weight water-proof thermal insulation material used for building exterior wall and its preparation
Method is raw material using high-calcium fly ass, desulfurated plaster by the technical program, under alkali-activator effect, can be had
There is the water-proof heat-insulation material of advantages of higher compressive strength, while realize recycling for industrial solid castoff again；It is steeped by adding in
The substances such as foam glass can be obtained with cavernous thermal insulation material, and pass through and introduce dodecyl three under foaming agent effect
Methoxy silane hydrophobing agent, which assigns material, has excellent water resistance；So as to provide a kind of compression strength greatly and with excellent
The purely inorganic material of waterproof thermal-insulated performance.
Specific embodiment
Technical scheme of the present invention is described in further detail with reference to specific embodiment.
A kind of light-weight water-proof thermal insulation material used for building exterior wall of the present invention, following material by following parts by weight make and
Into.
Modified coal ash 100-150,30-50 parts of desulfurated plaster, 20-30 parts of foam glass, 5-8 parts of alkali-activator, cement
10-15 parts, 6-10 parts of sepiolite fibre, 5-10 parts of hydroxyethylmethylcellulose, 1-2 parts of calcium acrylate；1-1.5 parts of hydrophobing agent,
1.5-2.5 parts of water-reducing agent, 2-4 parts of polysiloxanes, 20-25 parts of foaming agent.
In technical scheme of the present invention, the modified coal ash is by high-calcium fly ass, modifying agent, ethanol water, hydrochloric acid
Solution is prepared.
Calcareous content >=14% in the high-calcium fly ass.
The modifying agent is vinyl octadecyl dimethoxysilane.
The Mixing ratio by weight example of mixture of the alkali-activator for quick lime and sodium metasilicate, quick lime and sodium metasilicate is 1:
1。
The cement is early-strength 42.5R portland slag cements.
The hydrophobing agent is dodecyltrimethoxysilane.
The water-reducing agent is polycarboxylic acids.
The foaming agent is a concentration of 10% industrial hydrogen peroxide solution.
A kind of preparation method of light-weight water-proof thermal insulation material used for building exterior wall of the present invention, is made according to the following steps：
(1) prepared by modified coal ash：
It is 2 to prepare with high-calcium fly ass weight ratio:3 ethanol water, with the hydrochloric acid solution of 0.1M adjust pH value to
4.0, high-calcium fly ass is dispersed in above-mentioned solution, in 40 °C of water-bath under the rotating speed stirring of 600r/min, dropwise
It is 1 to add in high-calcium fly ass weight ratio：100 vinyl octadecyl dimethoxysilane continues to stir 1h after the completion, most
It afterwards by filtering, washing, fully dry, pulverize under 80 °C, obtain modified coal ash.
(2) prepared by premix：
Weigh 100-150 parts of modified coal ash, 30-50 parts of desulfurated plaster, 20-30 parts of foam glass, alkali-activator 5-8
Part, 10-15 parts of cement, 6-10 parts of sepiolite fibre, 5-10 parts of hydroxyethylmethylcellulose, the high-speed stirred at a temperature of 40 °C
With 400r/min mixs 2 minutes in machine, it is uniformly mixed and obtains premix；
(3) it is prepared into foamed slurry：
Successively add in 1-2 parts of calcium acrylate, 1-1.5 parts of hydrophobing agent, water-reducing agent in order in the premix of step (2)
1.5-2.5 parts, 2-4 parts of polysiloxanes, 20-25 parts of foaming agent, under 600r/min rotating speeds stir 5min obtain foamed slurry；
(4) pouring molding：
Slurry prepared by step (3) is poured into molding mold, is 60% in relative humidity, environment temperature is 37 °
Middle stand foaming molding in the environment of C；
(5) stand foaming demoulds：
After 24 hours, it is 22 °C in temperature, relative humidity carries out demoulding maintenance under the conditions of being 70%, maintenance is surveyed after 28 days
Its compression strength and heat-insulating property index are tried, warehouse for finished product is transferred to after qualified.
Embodiment 1
(1) modified coal ash is prepared：It is 2 to prepare with high-calcium fly ass weight ratio:3 ethanol water, with the salt of 0.1M
Acid solution adjusts pH value to 4.0, high-calcium fly ass is dispersed in above-mentioned solution, the 600r/min in 40 °C of water-bath
Under rotating speed stirring, it is 1 to be added dropwise with high-calcium fly ass weight ratio：100 vinyl octadecyl dimethoxysilane is completed
After continue stir 1h, finally through suction filtration, washing, fully dry, pulverize under 80 °C, obtain modified coal ash.
(2) 100 parts of modified coal ash, 50 parts of desulfurated plasters, 30 parts of foam glass, 6 parts of alkali-activators, 11 parts of water are weighed
The 40 °C of lower 400r/min mixs 2min mixing in homogenizer of mud, 8 parts of sepiolite fibres, 6 parts of hydroxyethylmethylcelluloses
It is uniform to obtain premix；
(3) it presses in above-mentioned premix and gathers along successively 1 part of calcium acrylate of addition, 1 part of hydrophobing agent, 2.0 parts of water-reducing agents, 2 parts
Siloxanes, 22 parts of foaming agents stir 5min acquisition slurries under 600r/min；
(4) prepared slurry is poured into mold, at a temperature of 37 °C, is stood in the environment of relative humidity 60%
Foaming；
(5) stand foaming carries out demoulding maintenance afterwards for 24 hours, and curing temperature is 22 °C, relative humidity 70%, after conserving 28 days
Test the performance indicators such as its compression strength.
Embodiment 2
(1) modified coal ash is prepared first：It is 2 to prepare with high-calcium fly ass weight ratio:3 ethanol water, uses 0.1M
Hydrochloric acid solution adjust pH value to 4.0, high-calcium fly ass is dispersed in above-mentioned solution, the 600r/ in 40 °C of water-bath
Under the rotating speed stirring of min, it is 1 to be added dropwise with high-calcium fly ass weight ratio：100 vinyl octadecyl dimethoxy silicon
Alkane continues to stir 1h after the completion, finally by filtering, washing, fully dry, pulverize under 80 °C, obtains modified coal ash；
(2) 110 parts of modified coal ash, 40 parts of desulfurated plasters, 28 parts of foam glass, 5 parts of alkali-activators, 10 parts of water are weighed
The 40 °C of lower 400r/min mixs 2min mixing in homogenizer of mud, 6 parts of sepiolite fibres, 7 parts of hydroxyethylmethylcelluloses
It is uniform to obtain premix；
(3) it is pressed in above-mentioned premix along successively 1.5 parts of calcium acrylates of addition, 1.2 parts of hydrophobing agents, 2.0 parts of water-reducing agents, 3
Part polysiloxanes, 20 parts of foaming agents stir 5min acquisition slurries under 600r/min；
(4) prepared slurry is poured into mold, at a temperature of 37 °C, is stood in the environment of relative humidity 60%
Foaming；
(5) stand foaming carries out demoulding maintenance afterwards for 24 hours, and curing temperature is 22 °C, relative humidity 70%, after conserving 28 days
Test the performance indicators such as its compression strength.
Embodiment 3
(1) modified coal ash is prepared first：It is 2 to prepare with high-calcium fly ass weight ratio:3 ethanol water, uses 0.1M
Hydrochloric acid solution adjust pH value to 4.0, high-calcium fly ass is dispersed in above-mentioned solution, the 600r/ in 40 °C of water-bath
Under the rotating speed stirring of min, it is 1 to be added dropwise with high-calcium fly ass weight ratio：100 vinyl octadecyl dimethoxy silicon
Alkane continues to stir 1h after the completion, finally by filtering, washing, fully dry, pulverize under 80 °C, obtains modified coal ash；
(2) 120 parts of modified coal ash, 30 parts of desulfurated plasters, 26 parts of foam glass, 8 parts of alkali-activators, 15 parts of water are weighed
Mud, 10 parts of sepiolite fibres, 10 parts of hydroxyethylmethylcelluloses 40 °C of lower 400r/min mixs 2min in homogenizer are mixed
Close uniform premix；
(3) it is pressed in above-mentioned premix along successively 1.5 parts of calcium acrylates of addition, 1.5 parts of hydrophobing agents, 1.5 parts of water-reducing agents, 4
Part polysiloxanes, 24 parts of foaming agents stir 5min acquisition slurries under 600r/min；
(4) prepared slurry is poured into mold, at a temperature of 37 °C, is stood in the environment of relative humidity 60%
Foaming；
(5) stand foaming carries out demoulding maintenance afterwards for 24 hours, and curing temperature is 22 °C, relative humidity 70%, after conserving 28 days
Test the performance indicators such as its compression strength.
Embodiment 4
(1) modified coal ash is prepared first：It is 2 to prepare with high-calcium fly ass weight ratio:3 ethanol water, uses 0.1M
Hydrochloric acid solution adjust pH value to 4.0, high-calcium fly ass is dispersed in above-mentioned solution, the 600r/ in 40 °C of water-bath
Under the rotating speed stirring of min, it is 1 to be added dropwise with high-calcium fly ass weight ratio：100 vinyl octadecyl dimethoxy silicon
Alkane continues to stir 1h after the completion, finally by filtering, washing, fully dry, pulverize under 80 °C, obtains modified coal ash；
(2) 130 parts of modified coal ash, 35 parts of desulfurated plasters, 25 parts of foam glass, 6 parts of alkali-activators, 13 parts of water are weighed
The 40 °C of lower 400r/min mixs 2min mixing in homogenizer of mud, 7 parts of sepiolite fibres, 8 parts of hydroxyethylmethylcelluloses
It is uniform to obtain premix；
(3) it is pressed in above-mentioned premix along successively 1.6 parts of calcium acrylates of addition, 1.4 parts of hydrophobing agents, 2.0 parts of water-reducing agents, 3
Part polysiloxanes, 20-25 parts of foaming agents stir 5min acquisition slurries under 600r/min；
(4) prepared slurry is poured into mold, at a temperature of 37 °C, is stood in the environment of relative humidity 60%
Foaming；
(5) stand foaming carries out demoulding maintenance afterwards for 24 hours, and curing temperature is 22 °C, relative humidity 70%, after conserving 28 days
Test the performance indicators such as its compression strength.
Embodiment 5
(1) modified coal ash is prepared first：It is 2 to prepare with high-calcium fly ass weight ratio:3 ethanol water, uses 0.1M
Hydrochloric acid solution adjust pH value to 4.0, high-calcium fly ass is dispersed in above-mentioned solution, the 600r/ in 40 °C of water-bath
Under the rotating speed stirring of min, it is 1 to be added dropwise with high-calcium fly ass weight ratio：100 vinyl octadecyl dimethoxy silicon
Alkane continues to stir 1h after the completion, finally by filtering, washing, fully dry, pulverize under 80 °C, obtains modified coal ash；
(2) 150 parts of modified coal ash, 45 parts of desulfurated plasters, 24 parts of foam glass, 6.5 parts of alkali-activators, 14 parts of water are weighed
The 40 °C of lower 400r/min mixs 2min mixing in homogenizer of mud, 9 parts of sepiolite fibres, 7 parts of hydroxyethylmethylcelluloses
It is uniform to obtain premix；
(3) it is pressed in above-mentioned premix along successively 1.4 parts of calcium acrylates of addition, 1.3 parts of hydrophobing agents, 1.5 parts of water-reducing agents, 4
Part polysiloxanes, 24 parts of foaming agents stir 5min acquisition slurries under 600r/min；
(4) prepared slurry is poured into mold, at a temperature of 37 °C, is stood in the environment of relative humidity 60%
Foaming；
(5) stand foaming carries out demoulding maintenance afterwards for 24 hours, and curing temperature is 22 °C, relative humidity 70%, after conserving 28 days
Test the performance indicators such as its compression strength.
The main performance index testing result of the embodiment of the present invention is as shown in table 1.
The main performance index of table 1, each embodiment sample
| Serial number | Test event | Unit | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| 1 | Compression strength | MPa | 0.32 | 0.37 | 0.35 | 0.34 | 0.38 |
| 2 | Thermal conductivity factor | W/(m·K) | 0.056 | 0.059 | 0.052 | 0.058 | 0.060 |
| 3 | Impermeability pressure (28d) | MPa | 1.6 | 1.6 | 1.7 | 1.8 | 1.5 |
| 4 | Water absorption rate | % | 3.8 | 3.7 | 3.5 | 3.4 | 3.6 |
The present invention is using high-calcium fly ass and desulfurated plaster as primary raw material, with reference to other inorganic material and chemical activator,
Light-weight water-proof thermal insulation material is prepared, has the characteristics that simple for process, dependable performance, stability are good, in the resistance to compression of five embodiments
One times or more of the prior art is superior in intensity detection, wherein best with the compression strength of embodiment five；In five embodiments
Middle heat insulation effect also increases, wherein being best using the heat insulation effect of embodiment three, in five embodiments, passes through addition
Hydrophobing agent and polysiloxanes substantially increase the water resistance of material, wherein the waterproof effect with example IV is best.
Embodiment described above is only the preferred embodiment for absolutely proving the present invention and being lifted.
Protection scope of the present invention is without being limited thereto, and what those skilled in the art were made on the basis of the present invention is equal
It substitutes or converts, within protection scope of the present invention.
Claims (1)
1. a kind of preparation method of light-weight water-proof thermal insulation material used for building exterior wall, which is characterized in that be made according to the following steps:
(1) prepared by modified coal ash：
It is 2 to prepare with high-calcium fly ass weight ratio:3 ethanol water adjusts pH value to 4.0 with the hydrochloric acid solution of 0.1M, will
High-calcium fly ass is dispersed in above-mentioned solution, in 40 °C of water-bath 600r/min rotating speed stirring under, be added dropwise with
High-calcium fly ass weight ratio is 1：100 vinyl octadecyl dimethoxysilane continues to stir 1h after the completion, finally pass through
It filters, washing, fully dry, pulverize under 80 °C, obtain modified coal ash;
(2) prepared by premix：
Weigh 100-150 parts of modified coal ash, 30-50 parts of desulfurated plasters, 20-30 parts of foam glass, 5-8 parts of alkali-activators, 10-
15 parts of cement, 6-10 parts of sepiolite fibres, 5-10 parts of hydroxyethylmethylcelluloses 40 °C of lower 400r/min in homogenizer
Mix 2min is uniformly mixed to obtain premix；
(3) it is prepared into foamed slurry：
Successively add in 1-2 parts of calcium acrylate, 1-1.5 parts of hydrophobing agent, water-reducing agent 1.5- in order in the premix of step (2)
2.5 parts, 2-4 parts of polysiloxanes, 20-25 parts of foaming agent, under 600r/min rotating speeds stir 5min obtain foamed slurry；
(4) pouring molding：
Slurry prepared by step (3) is poured into molding mold, is 60% in relative humidity, environment temperature is 37 °C
Middle stand foaming molding under environment；
(5) stand foaming demoulds：
After 24 hours, it is 22 °C in temperature, relative humidity carries out demoulding maintenance under the conditions of being 70%, maintenance tests it after 28 days
Compression strength and heat-insulating property index are transferred to warehouse for finished product after qualified.
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| CN105837149B (en) * | 2016-03-25 | 2017-12-19 | 东南大学 | A kind of original state desulfurated plaster granular polystyrene light heat insulation material and preparation method thereof |
| CN109704724A (en) * | 2018-08-27 | 2019-05-03 | 苏州谦合诚智能科技有限公司 | A kind of porous sound absorption new material and preparation method thereof |
| CN112250385A (en) * | 2020-10-23 | 2021-01-22 | 舒城诚鑫建材有限公司 | Light flame-retardant heat-insulating material for building exterior wall and preparation method thereof |
| CN115368160B (en) * | 2022-09-19 | 2023-06-13 | 陕西地矿第三地质队有限公司 | Aerated brick and production process thereof |
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| CN101113088A (en) * | 2007-07-06 | 2008-01-30 | 杨子江 | Production method for cold-foaming coal ash baking-free ceramicite |
| CN102344298A (en) * | 2010-07-29 | 2012-02-08 | 西北民族大学 | Foamed concrete heat-preservation and load-bearing brick and production method thereof |
| CN102850825A (en) * | 2012-09-11 | 2013-01-02 | 安徽理工大学 | Method and application for carrying out fly ash floating bead surface modification by using compound coupling agent |
| CN103964805A (en) * | 2014-05-27 | 2014-08-06 | 哈尔滨工业大学 | Preparation method of coal ash-desulphurization gypsum thermal-insulation board |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101113088A (en) * | 2007-07-06 | 2008-01-30 | 杨子江 | Production method for cold-foaming coal ash baking-free ceramicite |
| CN102344298A (en) * | 2010-07-29 | 2012-02-08 | 西北民族大学 | Foamed concrete heat-preservation and load-bearing brick and production method thereof |
| CN102850825A (en) * | 2012-09-11 | 2013-01-02 | 安徽理工大学 | Method and application for carrying out fly ash floating bead surface modification by using compound coupling agent |
| CN103964805A (en) * | 2014-05-27 | 2014-08-06 | 哈尔滨工业大学 | Preparation method of coal ash-desulphurization gypsum thermal-insulation board |
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