CN107540312A - A kind of Foam cement insulation material and preparation method thereof - Google Patents
A kind of Foam cement insulation material and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of Foam cement insulation material and preparation method thereof, belong to building material technical field.The present invention is by nanometer aluminium powder and lard heating stirring, then carries out vacuum refrigeration crushing, obtains coating nano aluminium powder；Coating nano aluminium powder, nanometer iron powder, saturation Fluorinse, nano silicon and peach colloidal solution are stirred, is spray-dried, obtains cladding microballoon；Cladding microballoon is added into tube furnace, nitrogen charging high temperature carbonization heats up step by step, continues nitrogen charging pyroreaction, produces composite foamable agent；Cement, flyash, composite foamable agent, coagulant, thickener, water reducer and water are stirred, injection molding, stood, cut, packed, maintenance, produce Foam cement insulation material.Foam cement insulation material provided by the invention has excellent heat-insulating property and mechanical property.
Description
Technical field
The invention discloses a kind of Foam cement insulation material and preparation method thereof, belong to building material technical field.
Background technology
Heat preserving and insulating material is to influence one important influence factor of building energy conservation with product, and the development of building thermal insulation material is with answering
With increasingly by the most attention of researcher.Light heat insulating material is mainly with expanded perlite, mineral wool, glass
Based on cotton, foamed plastics, refractory fibre, silicate insulating product etc., but the heat insulation mortar such as expanded perlite product, foamed plastics
There is higher water imbibition, cause heat-insulating property to reduce, raw material phenol, the formaldehyde of organic foam insulation material are difficult to eliminate, volatilization
Health is out damaged, crack, obscission easily occurs in polystyrene foam heat insulation material, and inflammable, safety coefficient is low.Foaming
Cement is a kind of fire-retardant, sharp useless, environmental protection, energy-conservation, the novel heat insulation heat-protection building material that price is low, performance is good, foam cement with
Its lightweight, insulation, heat-insulated, fire resisting and the premium properties of sound insulation are widely applied in every field.
Foam cement is that foaming agent is mechanically fully foamed by the foamed system of foaming machine, and by foam and water
Mud slurry uniform mixes, and then carries out cast-in-place construction or mould molding by the pumping system of foaming machine, is formed through natural curing
A kind of novel light heat preservation fireproofing material containing a large amount of sealed porositys.It belongs to air bubble-shaped heat-insulating material, and outstanding feature is
The foam hole of closing is formed in inside concrete, makes concrete light and thermal insulation separation thermalization, is ideal at present new
Building thermal insulation material, have a extensive future.However, the density for the Foam cement insulation material widely applied at this stage is generally
In 250kg/m3More than, compared to organic architecture insulation material, its density is too high, thermal and insulating performance is poor, thus can not have
Effect substitution organic architecture insulation material large-scale application.And it is less than 250kg/m for density3Foam cement insulation material, it is existing
Some production technologies are also immature, although many enterprises call oneself and can produced, the product that most enterprises produce among these
The defects of generally existing low intensity, thermal conductivity factor are higher, percent defective is high.In addition produce when generally use sulphate aluminium cement for
Binder materials, the production cost of product is not only added, more cause the poor durability of product, it is difficult to meet wanting for service life
Ask.Existing method has carried out experimental study to the foam cement of cement-sand-lime type, although obtaining thermal conductivity factor very little
Foam cement, but have that compression strength is relatively low, drying shrinkage is bigger than normal, it is impossible to the shortcomings that being had concurrently with thermal and insulating performance.
Therefore, one kind is prepared while Foam cement insulation material mechanical property is improved, and can make its heat insulation property
It can significantly improve, become and improve its performance urgent problem to be solved.
The content of the invention
The present invention solves the technical problem of：It is bad for traditional Foam cement insulation material heat-insulating property and mechanical property
The problem of, there is provided a kind of Foam cement insulation material and preparation method thereof.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：
A kind of Foam cement insulation material, it is made up of the raw material of following parts by weight：50~60 parts of cement, 10~20 parts of fine coal
Ash, 10~20 parts of composite foamable agents, 2~3 parts of coagulant, 2~3 parts of thickeners, 2~3 parts of water reducers, 40~50 parts of water；
The composite foamable agent preparation process is：
（1）By nanometer aluminium powder and lard by weight 1：3~1：5 heating stirrings, then vacuum refrigeration crushing is carried out, obtain cladding nanometer
Aluminium powder；
（2）Count 10~20 parts of coating nano aluminium powder, 1~2 part of nanometer iron powder, 5~6 parts of sodium fluorides in parts by weight, 10~20
Part nano silicon and 20~30 parts of peach colloidal solutions are stirred, and are spray-dried, are obtained cladding microballoon；
（3）Cladding microballoon is added into tube furnace, nitrogen charging high temperature carbonization heats up step by step, continues nitrogen charging pyroreaction, cools to the furnace
Room temperature, produce composite foamable agent；
The Foam cement insulation material preparation process is：Each raw material is weighed by raw material composition, by cement, flyash, compound hair
Infusion, coagulant, thickener, water reducer and water are stirred, injection molding, stand foaming, are stripped, and are stood, and maintenance, produce foaming water
Mud insulation material.
The cement is portland cement, any one in Portland cement or portland-pozzolan cement.
The coagulant is any one in anhydrous gypsum or semi-hydrated gypsum.
The thickener is methylcellulose, any one in hydroxypropyl cellulose or hydroxyethyl cellulose.
The water reducer is calcium lignin sulfonate water depressor, in melamine high-efficiency water-reducing agent or aliphatic high-efficiency water reducing agent
Any one.
Step（2）The peach colloidal solution preparation process is：By peach gum and water in mass ratio 1：50~1：After 100 mixing swellings,
Heating stirring dissolves, and produces peach colloidal solution.
The beneficial effects of the invention are as follows：
Technical solution of the present invention is by adding composite foamable agent, first, wraps up nanometer aluminium powder by using lard, on the one hand, avoid
Nanometer aluminium powder loses foaming effect because of oxidation, and on the other hand, lard can be used as emulsification in later stage cement hydration process
Agent, in whipping process, air is scattered in the form of micro-bubble in system, play a part of auxiliary foaming, secondly, pass through
Nanometer aluminium powder is coated on nanometer iron powder, sodium fluoride, nano silicon and peach gum are formed in microballoon, peach gum through high temperature carbonization,
Again through high temperature and nanometer iron powder with sodium fluoride catalytic action, generating hard carborundum with part of silica reaction and coating
Shell, in preparation process, unreacted silica slow reaction in cement alkalescence body dissolves so that carborundum coats hull shape
Into porous structure, moisture is infiltrated through inside cladding by hole, is reacted with nano aluminium oxide, generation aluminium hydroxide and
Hydrogen, hydrogen can form substantial amounts of bubble in system, improve the porosity of system, reduce the thermal conductivity factor of system, enhance
The heat-insulating property of system, meanwhile, in early stage cement hydration process, the generation of aluminium hydroxide may participate in hydration process early stage, make
It is quick inside system to form gel network, and remaining rigid porous carborundum tiny balloon will be reacted and be fixed on gel network knot
In structure, while binding force inside enhancing system, make its internal structure even closer, in addition, the gel network that early stage is formed
So that the toughness of system improves, so as to reduce the generation of Original Cracks in system, meanwhile, the bridge joint effect of gel network hinders
The development of crackle, the connection for having blocked crackle, the mechanical property of lifting system early stage.
Brief description of the drawings
Fig. 1 Foam cement insulation materials compression strength and thermal conductivity factor testing result.
Embodiment
By peach gum and water in mass ratio 1：50~1：100 are added in No. 1 beaker, and 20~30min is stirred with glass bar
Afterwards, stand 3~4h of swelling, then No. 1 beaker moved into digital display and tested the speed constant temperature blender with magnetic force, in temperature be 30~40 DEG C, rotating speed
Under the conditions of 300~500r/min, heating stirring dissolves 30~40min, produces peach colloidal solution；By nanometer aluminium powder and lard by weight
Than 1：3~1：5 are added in single-necked flasks, then single-necked flask immigration digital display is tested the speed constant temperature blender with magnetic force, in temperature be 45~
60 DEG C, under the conditions of rotating speed is 300~500r/min, 30~40min is stirred, obtains mixed material, then again by mixed material
15~25min of Freezing smashing in freezing crusher is placed in, obtains coating nano aluminium powder；Count in parts by weight and receive 10~20 parts of claddings
Rice aluminium powder, 1~2 part of nanometer iron powder, 5~6 parts of sodium fluorides, 10~20 parts of nano silicons and 20~30 parts of peach colloidal solutions add 2
In number beaker, under the conditions of rotating speed is 300~500r/min, 20~30min is stirred, obtains mixed serum, then by mixing slurry
Material add spray dryer, in inlet temperature be 100~150 DEG C, outlet temperature be 60~80 DEG C, master rotating speed be 8000~
Under the conditions of 12000r/min, spray drying, cladding microballoon is obtained；Cladding microballoon is added into tube furnace, with 60~90mL/min speed
Nitrogen is passed through into stove, under the conditions of temperature is 450~550 DEG C, 1~2h is carbonized, then heats up step by step, continue with 60~
90mL/min speed is passed through nitrogen into stove, under the conditions of temperature is 1400~1500 DEG C, after reacting 1~2h, cools to the furnace
Room temperature, produce composite foamable agent；Count in parts by weight, take 50~60 parts of cement successively, 10~20 parts of flyash, 10~20 parts multiple
Foaming agent is closed, 2~3 parts of coagulant, 2~3 parts of thickeners, 2~3 parts of water reducers, 40~50 parts of water are added in batch mixer, in rotating speed
40~50min is mixed for high-speed stirred under the conditions of 1200~1300r/min, obtains mixed slurry, then mixed slurry is injected in mould,
After 2~6h of stand foaming, the demoulding, then stand 18~24h, obtain blank, then blank is placed in curing box, in temperature be 20~
30 DEG C, relative humidity conserves 20~28 days under the conditions of being 90~95%, produces Foam cement insulation material.The cement is silicic acid
Any one in salt cement, Portland cement or portland-pozzolan cement.The coagulant is anhydrous gypsum or half
Any one in water gypsum.The thickener is methylcellulose, any in hydroxypropyl cellulose or hydroxyethyl cellulose
It is a kind of.The water reducer is calcium lignin sulfonate water depressor, in melamine high-efficiency water-reducing agent or aliphatic high-efficiency water reducing agent
Any one.
Example 1
By peach gum and water in mass ratio 1：100 add in No. 1 beaker, after being stirred 30min with glass bar, stand swelling 4h,
No. 1 beaker is moved into digital display again to test the speed constant temperature blender with magnetic force, in temperature be 40 DEG C, under the conditions of rotating speed is 500r/min, heating
Stirring and dissolving 40min, produces peach colloidal solution；By nanometer aluminium powder and lard by weight 1：5 are added in single-necked flask, then single port is burnt
Bottle moves into digital display and tested the speed constant temperature blender with magnetic force, is 60 DEG C in temperature, under the conditions of rotating speed is 500r/min, is stirred 40min,
Mixed material is obtained, mixed material is then placed in Freezing smashing 25min in freezing crusher again, obtains coating nano aluminium powder；By weight
Number meter is measured by 20 parts of coating nano aluminium powder, 2 parts of nanometer iron powders, 6 parts of sodium fluorides, 20 parts of nano silicons and 30 parts of peach colloidal solutions
Add in No. 2 beakers, under the conditions of rotating speed is 500r/min, is stirred 30min, obtains mixed serum, then mixed slurry is added
Entering spray dryer, be 150 DEG C in inlet temperature, outlet temperature is 80 DEG C, under the conditions of master rotating speed is 12000r/min, spraying
Dry, obtain cladding microballoon；Will cladding microballoon add tube furnace, nitrogen is passed through into stove with 90mL/min speed, in temperature be 550
Under the conditions of DEG C, carbonize 2h, then heat up step by step, continue to be passed through nitrogen into stove with 90mL/min speed, in temperature be 1500 DEG C
Under the conditions of, after reacting 2h, cool to room temperature with the furnace, produce composite foamable agent；Count in parts by weight, take 60 parts of cement successively, 20
Part flyash, 20 parts of composite foamable agents, 3 parts of coagulant, 3 parts of thickeners, 3 parts of water reducers, 50 parts of water are added in batch mixers, in turning
High-speed stirred mixes 50min under the conditions of speed is 1300r/min, obtains mixed slurry, then mixed slurry is injected in mould, stand foaming
After 6h, the demoulding, then stand 24h, obtain blank, then blank is placed in curing box, in temperature be 30 DEG C, relative humidity 95%
Under the conditions of conserve 28 days, produce Foam cement insulation material.The cement is portland cement.The coagulant is anhydrous stone
Cream.The thickener is methylcellulose.The water reducer is calcium lignin sulfonate water depressor.
Example 2
By peach gum and water in mass ratio 1：100 add in No. 1 beaker, after being stirred 30min with glass bar, stand swelling 4h,
No. 1 beaker is moved into digital display again to test the speed constant temperature blender with magnetic force, in temperature be 40 DEG C, under the conditions of rotating speed is 500r/min, heating
Stirring and dissolving 40min, produces peach colloidal solution；Count 20 parts of nanometer aluminium powders, 2 parts of nanometer iron powders, 6 parts of sodium fluorides in parts by weight, 20
Part nano silicon and 30 parts of peach colloidal solutions are added in No. 2 beakers, under the conditions of rotating speed is 500r/min, are stirred 30min,
Mixed serum is obtained, then mixed slurry is added into spray dryer, is 150 DEG C in inlet temperature, outlet temperature is 80 DEG C, and master turns
Under the conditions of speed is 12000r/min, spray drying, cladding microballoon is obtained；Cladding microballoon is added into tube furnace, with 90mL/min speed
Nitrogen is passed through into stove, under the conditions of temperature is 550 DEG C, 2h is carbonized, then heats up step by step, continue with 90mL/min speed to stove
Nitrogen is inside passed through, under the conditions of temperature is 1500 DEG C, after reacting 2h, room temperature is cooled to the furnace, produces composite foamable agent；By weight
Number meter, 60 parts of cement, 20 parts of flyash, 20 parts of composite foamable agents, 3 parts of coagulant, 3 parts of thickeners, 3 parts of diminishings are taken successively
Agent, 50 parts of water are added in batch mixer, and high-speed stirred mixes 50min under the conditions of rotating speed is 1300r/min, obtain mixed slurry, then will
In mixed slurry injection mould, after stand foaming 6h, the demoulding, 24h is then stood, obtains blank, then blank is placed in curing box,
It it is 30 DEG C in temperature, relative humidity conserves 28 days under the conditions of being 95%, produces Foam cement insulation material.The cement is silicic acid
Salt cement.The coagulant is anhydrous gypsum.The thickener is methylcellulose.The water reducer subtracts for calcium lignosulfonate
Aqua.
Example 3
By peach gum and water in mass ratio 1：100 add in No. 1 beaker, after being stirred 30min with glass bar, stand swelling 4h,
No. 1 beaker is moved into digital display again to test the speed constant temperature blender with magnetic force, in temperature be 40 DEG C, under the conditions of rotating speed is 500r/min, heating
Stirring and dissolving 40min, produces peach colloidal solution；By nanometer aluminium powder and lard by weight 1：5 are added in single-necked flask, then single port is burnt
Bottle moves into digital display and tested the speed constant temperature blender with magnetic force, is 60 DEG C in temperature, under the conditions of rotating speed is 500r/min, is stirred 40min,
Mixed material is obtained, mixed material is then placed in Freezing smashing 25min in freezing crusher again, coating nano aluminium powder is obtained, produces
Composite foamable agent；Count in parts by weight, take 60 parts of cement successively, 20 parts of flyash, 20 parts of composite foamable agents, 3 parts of coagulant, 3
Part thickener, 3 parts of water reducers, 50 parts of water are added in batch mixers, and high-speed stirred mixes 50min under the conditions of rotating speed is 1300r/min,
Mixed slurry, then mixed slurry is injected in mould, after stand foaming 6h, the demoulding, then stands 24h, obtain blank, then by base
Material is placed in curing box, is 30 DEG C in temperature, relative humidity conserves 28 days under the conditions of being 95%, produces Foam cement insulation material.
The cement is portland cement.The coagulant is anhydrous gypsum.The thickener is methylcellulose.The water reducer is
Calcium lignin sulfonate water depressor.
Example 4
By peach gum and water in mass ratio 1：100 add in No. 1 beaker, after being stirred 30min with glass bar, stand swelling 4h,
No. 1 beaker is moved into digital display again to test the speed constant temperature blender with magnetic force, in temperature be 40 DEG C, under the conditions of rotating speed is 500r/min, heating
Stirring and dissolving 40min, produces peach colloidal solution；By nanometer aluminium powder and lard by weight 1：5 are added in single-necked flask, then single port is burnt
Bottle moves into digital display and tested the speed constant temperature blender with magnetic force, is 60 DEG C in temperature, under the conditions of rotating speed is 500r/min, is stirred 40min,
Mixed material is obtained, mixed material is then placed in Freezing smashing 25min in freezing crusher again, obtains coating nano aluminium powder；By weight
Number meter is measured by 20 parts of coating nano aluminium powder, 2 parts of nanometer iron powders, 6 parts of sodium fluorides, 20 parts of nano silicons and 30 parts of peach colloidal solutions
Add in No. 2 beakers, under the conditions of rotating speed is 500r/min, is stirred 30min, obtains mixed serum, then mixed slurry is added
Entering spray dryer, be 150 DEG C in inlet temperature, outlet temperature is 80 DEG C, under the conditions of master rotating speed is 12000r/min, spraying
Dry, obtain cladding microballoon, produce composite foamable agent；Count in parts by weight, take 60 parts of cement successively, 20 parts of flyash, 20 parts multiple
Close foaming agent, 3 parts of coagulant, 3 parts of thickeners, 3 parts of water reducers, 50 parts of water are added in batch mixers, in rotating speed be 1300r/min bars
High-speed stirred mixes 50min under part, obtains mixed slurry, then mixed slurry is injected in mould, after stand foaming 6h, the demoulding, then
24h is stood, obtains blank, then blank is placed in curing box, is 30 DEG C in temperature, relative humidity conserves 28 days under the conditions of being 95%,
Produce Foam cement insulation material.The cement is portland cement.The coagulant is anhydrous gypsum.The thickener is first
Base cellulose.The water reducer is calcium lignin sulfonate water depressor.
Comparative example：The cement insulation board of Shanghai insulation material Science and Technology Ltd. production.
Sheet material is made in the Foam cement insulation material of the gained of example 1 to 4 and carries out performance detection with comparative example product, specifically
Detection method is as follows：
1. compression strength：Sample is molded in the die trial that size is 100mm × 100mm × 100mm, in standard curing box after the demoulding
Interior maintenance extremely regulation age.Specimen size is first determined, is accurate to 1mm, and calculates the compression area of sample, then using fluid pressure type ten thousand
Can testing machine with（2.0±0.5）KN/s speed is continuous and loading is equably carried out to sample, until destroying, record destroys lotus
Carry.Compression strength presses formula（1）Calculate：
R=P/F （1）
In formula：R-sample compression strength（MPa）；P-failing load（N）；F-compression area（mm2）；
2. thermal conductivity factor：Sample is molded in size is 200mm × 200mm × 10mm die trials, is stripped, is dried after standard curing,
Referring next to GB/T10294, in DRH-III heat conduction coefficient testers（Protect flat plate heat method）The thermal conductivity factor of upper measure sample.
Specific testing result is shown in brief description of the drawings, from brief description of the drawings Fig. 1 testing results, technical solution of the present invention preparation
The heat-insulating property and mechanical property of Foam cement insulation material significantly improve, should in field of heat insulating materials and broader field to it
With with facilitation.
Claims (6)
- A kind of 1. Foam cement insulation material, it is characterised in that：It is made up of the raw material of following parts by weight：50~60 parts of water Mud, 10~20 parts of flyash, 10~20 parts of composite foamable agents, 2~3 parts of coagulant, 2~3 parts of thickeners, 2~3 parts of water reducers, 40~50 parts of water；The composite foamable agent preparation process is：（1）By nanometer aluminium powder and lard by weight 1：3~1：5 heating stirrings, then vacuum refrigeration crushing is carried out, obtain cladding nanometer Aluminium powder；（2）Count 10~20 parts of coating nano aluminium powder, 1~2 part of nanometer iron powder, 5~6 parts of sodium fluorides in parts by weight, 10~20 Part nano silicon and 20~30 parts of peach colloidal solutions are stirred, and are spray-dried, are obtained cladding microballoon；（3）Cladding microballoon is added into tube furnace, nitrogen charging high temperature carbonization heats up step by step, continues nitrogen charging pyroreaction, cools to the furnace Room temperature, produce composite foamable agent；The Foam cement insulation material preparation process is：Each raw material is weighed by raw material composition, by cement, flyash, compound hair Infusion, coagulant, thickener, water reducer and water are stirred, injection molding, stand foaming, are stripped, and are stood, and maintenance, produce foaming water Mud insulation material.
- A kind of 2. Foam cement insulation material according to claim 1, it is characterised in that：The cement is portland cement, Any one in Portland cement or portland-pozzolan cement.
- A kind of 3. Foam cement insulation material according to claim 1, it is characterised in that：The coagulant be anhydrous gypsum or Any one in semi-hydrated gypsum.
- A kind of 4. Foam cement insulation material according to claim 1, it is characterised in that：The thickener is Methyl cellulose Any one in element, hydroxypropyl cellulose or hydroxyethyl cellulose.
- A kind of 5. Foam cement insulation material according to claim 1, it is characterised in that：The water reducer is lignin sulfonic acid Any one in calcium water reducer, melamine high-efficiency water-reducing agent or aliphatic high-efficiency water reducing agent.
- A kind of 6. Foam cement insulation material according to claim 1, it is characterised in that：Step（2）It is prepared by the peach colloidal solution Process is：By peach gum and water in mass ratio 1：50~1：After 100 mixing swellings, heating stirring dissolving, peach colloidal solution is produced.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108863238A (en) * | 2018-07-28 | 2018-11-23 | 黄智慧 | A kind of tile grout |
| CN111777374A (en) * | 2020-05-29 | 2020-10-16 | 安徽老石人石业有限公司 | Production process of heat-insulation stone integrated plate |
| CN116239394A (en) * | 2023-03-06 | 2023-06-09 | 燕山大学 | Method for regulating chemical foaming reaction rate in preparation of inorganic foaming heat-insulating material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102746019A (en) * | 2011-07-19 | 2012-10-24 | 江苏尼高科技有限公司 | High performance polymer foaming cement thermal insulation material and preparation method thereof |
-
2017
- 2017-10-09 CN CN201710928708.7A patent/CN107540312A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102746019A (en) * | 2011-07-19 | 2012-10-24 | 江苏尼高科技有限公司 | High performance polymer foaming cement thermal insulation material and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108863238A (en) * | 2018-07-28 | 2018-11-23 | 黄智慧 | A kind of tile grout |
| CN108863238B (en) * | 2018-07-28 | 2021-01-12 | 东元科技有限公司 | Tile joint mixture |
| CN111777374A (en) * | 2020-05-29 | 2020-10-16 | 安徽老石人石业有限公司 | Production process of heat-insulation stone integrated plate |
| CN116239394A (en) * | 2023-03-06 | 2023-06-09 | 燕山大学 | Method for regulating chemical foaming reaction rate in preparation of inorganic foaming heat-insulating material |
| CN116239394B (en) * | 2023-03-06 | 2024-01-23 | 燕山大学 | Method for regulating chemical foaming reaction rate in preparation of inorganic foaming heat-insulating material |
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Effective date of registration: 20180423 Address after: 213000 Room 102, unit 2, Taoyuan 2 village, Tianning District, Changzhou, Jiangsu Applicant after: Wang Min Address before: 213102 room 1106, Guanghua Street, Zhong Lou District, Changzhou, Jiangsu, China, 20 Applicant before: Changzhou Jian Xuan Textile Co., Ltd. |
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Application publication date: 20180105 |