CN108455888A - A kind of external wall insulation and preparation method thereof - Google Patents
A kind of external wall insulation and preparation method thereof Download PDFInfo
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- CN108455888A CN108455888A CN201711484883.8A CN201711484883A CN108455888A CN 108455888 A CN108455888 A CN 108455888A CN 201711484883 A CN201711484883 A CN 201711484883A CN 108455888 A CN108455888 A CN 108455888A
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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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
- C04B20/1055—Coating or impregnating with inorganic materials
- C04B20/1074—Silicates, e.g. glass
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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
- C04B30/00—Compositions for artificial stone, not containing binders
- C04B30/02—Compositions for artificial stone, not containing binders containing fibrous materials
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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
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
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- Inorganic Chemistry (AREA)
- Building Environments (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Thermal Insulation (AREA)
Abstract
This application discloses a kind of external wall insulations and preparation method thereof.The external wall insulation of the application, by heat-preserving complex material through dry powder compression molding device compression moulding；Inorganic material of the heat-preserving complex material by natural minerals and with infrared external reflection characteristic is combined, and inorganic material surface is coated on after the compound material of natural minerals formation nanoporous structure；Natural minerals include at least one of attapulgite, montmorillonite, kaolinite and wollastonite；Inorganic material includes at least one of rutile, calcined kaolinite, zircon.The external wall insulation of the application is suppressed using the heat-preserving complex material of the inorganic material comprising natural minerals and with infrared external reflection characteristic, and natural minerals and inorganic material anti-flammability are high, and high temperature resistance is good, and heat insulation effect is good；Also, nonhazardous acts on, safety and environmental protection.In addition, the external wall insulation of the application does not need plug-in steel wire, it is easy to use.
Description
Technical field
This application involves field of heat insulating materials, more particularly to a kind of external wall insulation and preparation method thereof.
Background technology
The center of energy saving building is to reduce architectural energy consumption and building Energy in use, improves the energy in building neutralization use
Utilization ratio.Meanwhile building energy conservation need to be premised on not influencing people's degree of being comfortable on, i.e. room temperature winter is Celsius not less than 18
Degree, summer are not higher than 26 degrees Celsius.Building exterior wall heat preserving plate is exactly to realize a kind of one of most important method of energy saving building.
Current external-wall heat-insulation material is broadly divided into three classes：When thermoplasticity thermal insulation material, for example, applying currently on the market
Most is most widely EPS external insulating system for thinly plastered external wall, followed by XPS external insulating system for thinly plastered external wall, then has and be exactly
There is net cast-in-place or without netting cast-in-place system, composite insulation boards system；Second is that thermosetting property thermal insulation material, for example, polyurethane on-the-spot foam
System, phenolic board class etc.；Third, inorganic heat insulation material, for example, foam glass, rock wool outer wall heat-insulation system etc..These systems are anti-
Fiery performance is not quite similar, and concrete condition is as follows：
Thermoplasticity thermal insulation material：Thermoplasticity thermal insulation material is applied in exterior insulation, is most ripe most perfect at present
External thermal insulation system.Combustion rating is B2 grades, is belonged to from fiery self-extinguishing type.
Thermosetting property thermal insulation material：Thermosetting property thermal insulation material is in exterior insulation application currently without any standard drawing
Collection.In thermosetting property thermal insulation material, the fire-protection rating of polyurethane foam is also B2 grades.The fire protecting performance of phenol formaldehyde foam is better than poly- ammonia
Ester foaming, its flame retardant property are currently fireproof thermal insulation material relatively good in organic insulation material close to A grades of materials,
But system itself applies the technical experience in exterior insulation all to have not gone through the inspection of time, the stability of system
Thermal coefficient after the water suction of difference, especially polyurethane increases significantly, and system heat insulating ability, freeze-thaw resistance, safety is caused to be dropped significantly
It is low.
Inorganic heat insulation material：Again using rock wool and foam glass as representative in inorganic heat insulation material.Rock wool, mineral wool are at 25 DEG C
For thermal coefficient usually between 0.036~0.041W/ (mK), it is fine that itself belongs to inanimate matter silicate under the normal temperature condition of left and right
Dimension, it is non-combustible.
So-called " thermal insulation material that flame retardant property is A grades " presently mainly refers to glass bead, closed-cell expanded perlite, rock
The inorganic heat insulation material of cotton, mineral wool, mineral wool, cement base or gypsum based inorganic thermal insulation mortar and light block insulation system etc..
In general, inorganic material is generally attained by B1 grades or A grades of fire protection requirements, but the density of its unit volume is larger, heat conduction system
Number is higher, and compared with organic insulation material, heat preservation and energy conservation effects are worse.Especially in the colder north, 10 centimetres below
Construction thickness is difficult to reach the requirement of code of building energy efficiency.
If it is A grades of material to use flame retardant property in studies have shown that External Thermal Insulation System without exception, while again
Reach very high heat-insulating property, then the market of state's inside thermal conservation material will be almost blank.
Therefore, there is an urgent need for researching and developing the good external-wall heat-insulation material of a kind of low new thermal coefficient, good heat insulating, fire protecting performance,
To alleviate the present situation of China's energy shortages and the problem of environmental pollution of getting worse.
Invention content
The purpose of the application is to provide a kind of new external wall insulation and preparation method thereof.
The application uses following technical scheme：
The one side of the application discloses a kind of external wall insulation, and the external wall insulation is by heat-preserving complex material through dry powder pressure
Former compression moulding processed；Wherein, heat-preserving complex material is by natural minerals and with the inorganic material of infrared external reflection characteristic
Material is combined, and the inorganic material surface is coated on after the compound material of natural minerals formation nanoporous structure；It
Right mineral material includes the attapulgite with layer chain structure, the kaolinite of the montmorillonite of layer structure, layer structure, and
At least one of the wollastonite of threadiness；Inorganic material includes at least one of rutile, calcined kaolinite, zircon.
It should be noted that the external wall insulation of the application uses the guarantor of the natural minerals containing specific crystal structure
Warm composite material is suppressed, and high temperature resistance is far superior to existing thermal insulation board.Also, what natural minerals were formed receives
Rice microcellular structure, good heat insulating；Natural minerals itself are safe and harmless, will not be to production during entire production and use
Or the toxic effect of user of service, environment will not be polluted, environmental safety is high.Furthermore, it is to be understood that the exterior wall of the application is protected
Warm plate is prepared using natural minerals and inorganic material, itself does not have combustibility, therefore, the external wall insulation of the application
Anti-flammability is high.The application uses the inorganic material with infrared external reflection characteristic, can effectively reflect thermal energy so that system
Standby heat-preserving complex material has better heat insulation effect.
Preferably, in a kind of realization method of the application, natural minerals by with layer chain structure attapulgite,
Four kinds of groups such as the wollastonite of the montmorillonite of layer structure, the kaolinite of layer structure and threadiness are grouped as；Also, inorganic material
Using calcined kaolinite.
Preferably, the D90 size distributions of natural minerals are in 200nm or less.
In the application, inorganic material is coated primarily as core by natural minerals, in principle, the granularity of inorganic material
More than natural minerals, and granularity is the smaller the better, is not specifically limited herein.
The another side of the application discloses the preparation method of the external wall insulation of the application, includes the following steps,
The natural minerals of selection respectively or are combined into laggard horizontal high voltage roller crushing, form 1-2 millimeters of days below
Right mineral powder；
The natural minerals that the natural mineral powder of acquisition is tuned into solid content 60%-65% with water are starched, meanwhile, add total weight
The auxiliary material of 0.5%-2%, to assist natural mineral powder to disperse in water or subsequent grinding；
The natural minerals slurry of preparation obtains further grinding refinement sequentially by super-fine whirl mill and nanometered disposal device
Natural minerals are starched；
The natural minerals slurry of further grinding refinement is placed in expansion drum, heating and high-speed stirred make natural mineral powder
Further disintegration is refined into D90 size distributions in 200nm subparticles below；
Drying will be starched by the natural minerals of expansion drum processing, obtains the subparticle of natural minerals；
The natural minerals subparticle of acquisition is granulated in electrostatic set composite, is obtained by natural minerals
The compound material with nanoporous structure that subparticle aggregates into；
By the compound material with nanoporous structure of acquisition with the inorganic material with infrared external reflection characteristic in electrostatic
It is granulated in set composite, under surface charge effect, the compound material with nanoporous structure is wrapped in the table of inorganic material
Face forms heat-preserving complex material；
By the compression moulding in dry powder compression molding device of the heat-preserving complex material of acquisition, that is, obtain the exterior-wall heat insulation
Plate.
It should be noted that in the preparation method of the application, the natural minerals that use for it is a variety of when, various natural mines
Object material individually high pressure roller crushing, separately made natural minerals slurry individually can carry out subsequent super-fine whirl mill, nanometers
Reason and expansion drum processing, obtain the subparticle of each natural minerals, finally by a variety of natural minerals after then drying
Subparticle with infrared external reflection characteristic inorganic material mixing granulation；Can also be that wherein several natural minerals are mixed
Sequentially carry out high pressure roller crushing after conjunction, natural minerals slurry, super-fine whirl mill, nanometered disposal and expansion drum processing is made etc., most
Mixing granulation afterwards.It is not specifically limited herein.
It should also be noted that, in the preparation method of the application, the effect of auxiliary material is to assist natural mineral powder in water
Middle dispersion and subsequent grinding.For example, in the preferred embodiment of the application, auxiliary material includes calgon, sodium pyrophosphate, second
At least one of alcohol, acetone.When preparing natural minerals slurry, auxiliary material can assist natural mineral powder to disperse in water,
Make its dispersion evenly, ensures the uniformity of final natural minerals subparticle.And it is further refined subsequent
In the process, since natural minerals have passed through the pressure of high pressure rolling device in advance, inside is acted on by high pressure stress, often
There are many stress defects inside one mineral material particles, become a kind of micro-crack, when these particles enter subsequent surpass
In thin eddy flow mill and nanometered disposal appliance arrangement, under the action of the grindings mechanism such as shearing, extruding, collision, answering suffered by particle
Power further increases, and internal tiny crack disintegration substantially increases grinding efficiency；When expansion drum is handled, ethyl alcohol or acetone penetrate into
Into the Crystal Cleavage face of material particles and micro-crack, gradually heat up, while starting high-speed stirred, in temperature-rise period ethyl alcohol,
Acetone volatilizees from the Crystal Cleavage face of material particles and micro-crack, this process is further disintegrated micronized particles, to obtain
D90 size distributions are in 200nm subparticles below.
It should also be noted that, in the preparation method of the application, first to natural minerals in electrostatic set composite
Subparticle is granulated, during this, under the action of surface charge, and the subparticle self-polymerization of natural minerals
At the compound material with nanoporous structure.In a kind of realization method of the application, natural minerals are simultaneously using recessed
Convex stick stone, montmorillonite, kaolinite and wollastonite, therefore, under the action of surface charge, in natural minerals subparticle
The soft fibre that attapulgite is formed constitutes the nano-scale fiber ball of knitting wool bulk, nanoscale with the hard fibre that wollastonite is formed
The nanometer micropore of fibrous nodules is at tens nanometers hereinafter, due to there is soft or hard two kinds of fibers to constitute, this nano-scale fiber ball is strong
Degree is very high, is firmly combined with, and is suitble to stir in liquid；And delaminated kaolinite and montmorillonite nano piece are then wrapped in outside fiber, fill
It fills out in the nanometer micropore of nano-scale fiber ball, forms the compound material of nano-scale fiber ball；Wherein, delaminated kaolinite and Meng Tuo
Stone nanometer sheet is filled in nanometer micropore, further such that nanometer micropore is divided into smaller hole, while but also being closed
Oral pore quantity increases, and plays preferably heat transfer barrier effect.
Finally, by the compound material of nano-scale fiber spherical structure and with infrared external reflection characteristic in electrostatic set composite
Inorganic material be mixed together granulation, during this, also due to the effect of surface charge, compound material is wrapped in red
The surface of the inorganic material of external reflectance characteristic forms the granular material such as millet particles size, that is, obtains heat-preserving complex material,
The further compression moulding of heat-preserving complex material obtains the external wall insulation of the application.
Preferably, it in expansion drum, heats and the specific method of high-speed stirred includes gradually being warming up to 60-80 DEG C, constant temperature is protected
15-30min is held, high-speed stirred is at the same time kept.Wherein, gradually heating refers to according to normal heating process, natural minerals
Slurry is gradually warming up to the temperature of setting in expansion drum.
Preferably, the speed of high-speed stirred is 900-1500rpm.
Preferably, drying will be starched by the natural minerals of expansion drum processing, it is specific using spray drying.
The advantageous effect of the application is：
The external wall insulation of the application, using the inorganic material comprising natural minerals and with infrared external reflection characteristic
Heat-preserving complex material is suppressed, on the one hand, and natural minerals and inorganic material anti-flammability are high, and high temperature resistance is good, also,
Heat insulation effect is good；On the other hand, natural minerals and inorganic material nonhazardous effect, safety and environmental protection.In addition, the application's is outer
Wall heat-insulating board does not need plug-in steel wire, easy to use.
Specific implementation mode
Existing thermal insulation board, heat insulation effect is not ideal enough, and flame retardant effect is poor.Therefore, the application to thermal insulation material into
Go long-term, in-depth study, it is expected to research and develop a kind of new good heat insulating, safe and harmless, good flame resistance, and it is heat safe
Thermal insulation material.
For this purpose, the application chooses the natural minerals with specific crystal structure, nano material is prepared using Physical
Technology carry out deep processing processing, formed have nanometer level microporous sandwich system, by the sandwich body
System is combined into heat-preserving complex material with the inorganic material with infrared external reflection characteristic, then the re-compacted exterior-wall heat insulation at the application
Plate.The external wall insulation of the application due to using natural minerals, so, high temperature resistance is far superior to current
Thermal insulation material.Also, the external wall insulation easy construction of the application, does not need plug-in steel wire, moreover, it is also possible to be prepared into
For the cladding panel with decorative effect and heat preservation work(.
The application is described in further detail below by specific embodiment.Following embodiment is only to the application into traveling
One step illustrates, should not be construed as the limitation to the application.
Embodiment one
This example uses the kaolinite with the attapulgite of layer chain structure, the montmorillonite of layer structure, layer structure, with
And four kinds of natural minerals of wollastonite of threadiness, and the preparation of the calcined kaolinite inorganic material with infrared external reflection characteristic
Heat-preserving complex material, the then re-compacted external wall insulation at this example.It is prepared as follows：
Material prepares：10 kilograms of 1-2 centimetres of attapulgite, 10 kilograms of kaolin, 5 kilograms of montmorillonite, wollastonite 7 are public
Jin.The WX1 type super-fine whirls of Shenzhen Wei Xiong mechanical equipments Co., Ltd grind 1, the WG3 of Shenzhen Wei Xiong mechanical equipments Co., Ltd
Type high pressure roll mill 1, the spray dryer of cubic chemical industry equipment company, the homemade nanometered disposal device of South China Science ＆ Engineering University,
The homemade expansion drum of South China Science ＆ Engineering University, the homemade electrostatic set composite of South China Science ＆ Engineering University.
The preparation of external wall insulation：
1,1 kilogram of wollastonite and 3 kilograms of attapulgite high pressure roll mills is taken to handle.
2, by the wollastonite handled well and attapulgite dispensing, it is tuned into the pulpous state of solid content 65% with water, is added 0.5%
Calgon, 3.7% ethyl alcohol are then placed in storage tank.
3, it by the slurry of above-mentioned solid content 65%, is pumped into super-fine whirl mill and carries out micronization, be then placed in storage tank.
4, go out slurry from tank pump and enter back into nanometered disposal device to handle 20 minutes, be then placed in storage tank.
5, the slurry that above-mentioned processing is completed is pumped into expansion drum, is heated to 70 degree of constant temperature, while with 900-1500 revolutions per minute
High-speed stirred 15 minutes, the specific rotating speed of this example is 1500rpm, and it is cooling and stir to be then placed in the storage tank with agitating device.
6, the material of upper step is spray-dried, material is spare.
7,3 kilograms of montmorillonites and 5 kilograms of kaolinite high pressure roll mill processing are taken.
8, repeat the above steps 2-6.
9, it by all materials after above-mentioned spray drying, is added in electrostatic set composite, under the action of surface charge,
The soft fibre that attapulgite in natural minerals subparticle is formed constitutes knitting wool with the hard fibre that wollastonite is formed
The nano-scale fiber ball of bulk, the nanometer micropore of nano-scale fiber ball is at tens nanometers hereinafter, delaminated kaolinite and montmorillonite are received
Rice piece is then wrapped in outside fiber, is filled in the nanometer micropore of nano-scale fiber ball, forms the compound of nano-scale fiber spherical structure
Material.
10, by above-mentioned compound material, the calcined kaolin of metered compound weight of material 11%, in electrostatic set composite
Middle carry out combined processing forms the heat-preserving complex material that nano-scale fiber ball is coated on calcined kaolin surface.
11, the material of 10 steps is sent into dry powder forming machine, direct pressing molding, the thickness for obtaining this example is the outer of 4mm
Wall heat-insulating board.
Combustibility test, Determination of conductive coefficients and thermal balance huyashi-chuuka (cold chinese-style noodles) temperature are carried out to external wall insulation prepared by this example
Degree test.The specific test method is as follows：
Combustibility is tested, and external wall insulation is directly placed on burned flame, its combustibility is observed, as a result shows
Show, external wall insulation prepared by this example does not burn, good flame resistance.
The method of the test reference standard YB/T4130-2005 of thermal coefficient carries out.Test result shows, prepared by this example
External wall insulation thermal coefficient is 0.017w/m.k, illustrates external wall insulation heat preservation, the good heat-insulation effect of this example preparation.
Thermal balance coldface temperature is tested, also known as the experiment of back of the body temperature, and the method for reference standard GB/T10066.4-2004 carries out.It surveys
Test result shows that the coldface temperature of external wall insulation prepared by this example is 55 DEG C.It is current using identical method contrast test
The aluminosilicate fiberboard of optimum performance is equally the thickness of 4mm in 200 DEG C of identical hot-face temperature, and coldface temperature is up to
173℃.As it can be seen that external wall insulation heat-proof quality prepared by this example is considerably higher, it is significantly better than the alumina silicate of current optimum performance
Fiberboard.
Also, external wall insulation easy construction prepared by this example, does not need plug-in steel wire, moreover, it is also possible to according to need
It asks, prepares the cladding panel for becoming with decorative effect and keeping the temperature work(.
Embodiment two
The natural minerals that this example uses are identical as embodiment one, the difference is that each component different from, and have
There is the inorganic material of infrared external reflection characteristic essentially identical using zircon, remaining equipment and condition and embodiment one.It is specific to prepare
It is as follows：
1,1 kilogram of wollastonite and 2 kilograms of attapulgite high pressure roll mill processing are taken.
2, by the wollastonite handled well and attapulgite dispensing, it is tuned into the pulpous state of solid content 65% with water, is added 0.5%
Sodium pyrophosphate, 5% acetone are then placed in storage tank.
3, it by the slurry of above-mentioned solid content 65%, is pumped into super-fine whirl mill and carries out micronization, be then placed in storage tank.
4, go out slurry from tank pump and enter back into nanometered disposal device to handle 20 minutes, be then placed in storage tank.
5, the slurry that above-mentioned processing is completed is pumped into expansion drum, is heated to 70 degree of constant temperature, while with 900-1500 revolutions per minute
High-speed stirred 15 minutes, the specific rotating speed of this example is 900rpm, and it is cooling and stir to be then placed in the storage tank with agitating device.
6, the material of upper step is spray-dried, material is spare.
7,3 kilograms of montmorillonites and 2 kilograms of kaolinite high pressure roll mill processing are taken.
8, repeat the above steps 2-6.
9, it by all materials after above-mentioned spray drying, is added in electrostatic set composite, under the action of surface charge,
The soft fibre that attapulgite in natural minerals subparticle is formed constitutes knitting wool with the hard fibre that wollastonite is formed
The nano-scale fiber ball of bulk, the nanometer micropore of nano-scale fiber ball is at tens nanometers hereinafter, delaminated kaolinite and montmorillonite are received
Rice piece is then wrapped in outside fiber, is filled in the nanometer micropore of nano-scale fiber ball, forms the compound of nano-scale fiber spherical structure
Material.
10, by above-mentioned compound material, the zircon of metered compound weight of material 11%, in electrostatic set composite into
Row combined processing forms the heat-preserving complex material that nano-scale fiber ball is coated on zircon surface.
11, the material of 10 steps is sent into dry powder forming machine, compression moulding, the exterior wall that the thickness for obtaining this example is 4mm is protected
Warm plate.
Combustibility test is carried out to the external wall insulation of this example using one identical method of embodiment, thermal coefficient is surveyed
Examination and the test of thermal balance coldface temperature.
The results show that the external wall insulation of this example does not burn, good flame resistance.The external wall insulation thermal coefficient of this example is
0.016w/m.k illustrates the external wall insulation heat preservation, good heat-insulation effect of this example.
Thermal balance coldface temperature test the results show that the coldface temperature of the external wall insulation of this example be 52 DEG C.Using phase
The aluminosilicate fiberboard of the current optimum performance of same method contrast test is equally 4mm in 200 DEG C of identical hot-face temperature
Thickness, coldface temperature is up to 175 DEG C.As it can be seen that the external wall insulation heat-proof quality of this example is considerably higher, it is significantly better than at present
The aluminosilicate fiberboard of optimum performance.
Above-mentioned thermal insulation board is after tested：It does not burn, thermal coefficient 0.016w/m.k；Compare the aluminium silicate fiber of current optimum performance
Plate is tieed up, in 200 DEG C of identical hot-face temperature, thermal insulation material thickness 4mm measures thermal balance coldface temperature, and material of the present invention is 52
DEG C, aluminosilicate fiberboard is 175 DEG C.
Likewise, the external wall insulation easy construction of this example, does not need plug-in steel wire, furthermore, it is also possible to according to demand,
Preparing becomes with decorative effect and keeps the temperature the cladding panel of work(.It should be noted that existing thermal insulation material, such as commonly
Rock wool applies the plug-in steel wire of man-hour requirement and fixes rock wool；And the external wall insulation direct image ceramic tile of the application is equally attached to outside
Wall, therefore do not need plug-in steel wire, easy construction.
The foregoing is a further detailed description of the present application in conjunction with specific implementation manners, and it cannot be said that this Shen
Specific implementation please is confined to these explanations.For those of ordinary skill in the art to which this application belongs, it is not taking off
Under the premise of conceiving from the application, a number of simple deductions or replacements can also be made.
Claims (8)
1. a kind of external wall insulation, it is characterised in that：The external wall insulation is set by heat-preserving complex material through dry powder compression moulding
Standby compression moulding；
Inorganic material of the heat-preserving complex material by natural minerals and with infrared external reflection characteristic is combined, the day
It is coated on the inorganic material surface after the compound material of right mineral material formation nanoporous structure；
The natural minerals include the attapulgite with layer chain structure, the montmorillonite of layer structure, layer structure
Kaolinite, and fibrous at least one of wollastonite；
The inorganic material includes at least one of rutile, calcined kaolinite, zircon.
2. external wall insulation according to claim 1, it is characterised in that：The natural minerals are by having a layer chain knot
The wollastonite composition of the attapulgite of structure, the montmorillonite of layer structure, the kaolinite of layer structure and threadiness；The inorganic material
Material is calcined kaolinite.
3. external wall insulation according to claim 1 or 2, it is characterised in that：The D90 granularities of the natural minerals point
Cloth is in 200nm or less.
4. according to the preparation method of claim 1-3 any one of them external wall insulations, it is characterised in that：Including following step
Suddenly,
The natural minerals of selection respectively or are combined into laggard horizontal high voltage roller crushing, form 1-2 millimeters of natural mines below
Object powder；
The natural minerals that the natural mineral powder of acquisition is tuned into solid content 60%-65% with water are starched, meanwhile, add total weight
The auxiliary material of 0.5%-2%, to assist natural mineral powder to disperse in water or subsequent grinding；
The natural minerals slurry of preparation obtains the natural of further grinding refinement sequentially by super-fine whirl mill and nanometered disposal device
Mineral are starched；
The natural minerals slurry of further grinding refinement is placed in expansion drum, heating and high-speed stirred make natural mineral powder into one
Step disintegration is refined into D90 size distributions in 200nm subparticles below；
Drying will be starched by the natural minerals of expansion drum processing, obtains the subparticle of natural minerals；
The natural minerals subparticle of acquisition is granulated in electrostatic set composite, is obtained by the fine of natural minerals
Aggregation of particles at the compound material with nanoporous structure；
The compound material with nanoporous structure of acquisition and the inorganic material with infrared external reflection characteristic is compound in electrostatic
It is granulated in device, under surface charge effect, the compound material with nanoporous structure is wrapped in the surface of inorganic material, shape
At heat-preserving complex material；
By the compression moulding in dry powder compression molding device of the heat-preserving complex material of acquisition, that is, obtain the external wall insulation.
5. preparation method according to claim 4, it is characterised in that：The auxiliary material includes calgon, burnt phosphorus
At least one of sour sodium, ethyl alcohol, acetone.
6. preparation method according to claim 4, it is characterised in that：In the expansion drum, the tool of simultaneously high-speed stirred is heated
Body method includes gradually being warming up to 60-80 DEG C, and constant temperature keeps 15-30min, at the same time keeps high-speed stirred.
7. according to claim 4-6 any one of them preparation methods, it is characterised in that：The speed of the high-speed stirred is 900-
1500rpm。
8. according to claim 4-6 any one of them preparation methods, it is characterised in that：The day by by expansion drum processing
Right mineral starch drying, specific using spray drying.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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