CN107344837A - Method for preparing hydrophobic silica aerogel cement-based thermal insulation material - Google Patents
Method for preparing hydrophobic silica aerogel cement-based thermal insulation material Download PDFInfo
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- CN107344837A CN107344837A CN201710797513.3A CN201710797513A CN107344837A CN 107344837 A CN107344837 A CN 107344837A CN 201710797513 A CN201710797513 A CN 201710797513A CN 107344837 A CN107344837 A CN 107344837A
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- Prior art keywords
- cement
- hydrophobic silica
- silica aerogel
- tween
- atlas
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 79
- 239000004568 cement Substances 0.000 title claims abstract description 73
- 230000002209 hydrophobic effect Effects 0.000 title claims abstract description 69
- 239000004965 Silica aerogel Substances 0.000 title claims abstract description 56
- 239000012774 insulation material Substances 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000003756 stirring Methods 0.000 claims abstract description 27
- 239000002002 slurry Substances 0.000 claims abstract description 17
- 239000004094 surface-active agent Substances 0.000 claims abstract description 15
- 239000000377 silicon dioxide Substances 0.000 claims description 14
- 239000000843 powder Substances 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 11
- 229920000136 polysorbate Polymers 0.000 claims description 11
- 239000004964 aerogel Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 10
- LWZFANDGMFTDAV-BURFUSLBSA-N [(2r)-2-[(2r,3r,4s)-3,4-dihydroxyoxolan-2-yl]-2-hydroxyethyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O LWZFANDGMFTDAV-BURFUSLBSA-N 0.000 claims description 7
- 235000011067 sorbitan monolaureate Nutrition 0.000 claims description 7
- 229910002012 Aerosil® Inorganic materials 0.000 claims description 5
- RFVNOJDQRGSOEL-UHFFFAOYSA-N 2-hydroxyethyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCCO RFVNOJDQRGSOEL-UHFFFAOYSA-N 0.000 claims description 4
- 238000004108 freeze drying Methods 0.000 claims description 3
- IEQAICDLOKRSRL-UHFFFAOYSA-N 2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-(2-dodecoxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethanol Chemical compound CCCCCCCCCCCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO IEQAICDLOKRSRL-UHFFFAOYSA-N 0.000 claims description 2
- NPYXBHZQVNRAOF-UHFFFAOYSA-N 2-[[10,13-dimethyl-17-(6-methylheptan-2-yl)-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1h-cyclopenta[a]phenanthren-3-yl]oxy]ethanol Chemical compound C1C=C2CC(OCCO)CCC2(C)C2C1C1CCC(C(C)CCCC(C)C)C1(C)CC2 NPYXBHZQVNRAOF-UHFFFAOYSA-N 0.000 claims description 2
- 229920001213 Polysorbate 20 Polymers 0.000 claims description 2
- 239000011398 Portland cement Substances 0.000 claims description 2
- 239000000654 additive Substances 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims description 2
- 238000005034 decoration Methods 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 2
- 239000011707 mineral Substances 0.000 claims description 2
- 235000010486 polyoxyethylene sorbitan monolaurate Nutrition 0.000 claims description 2
- 239000000256 polyoxyethylene sorbitan monolaurate Substances 0.000 claims description 2
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 claims description 2
- 229920000053 polysorbate 80 Polymers 0.000 claims description 2
- 229920001214 Polysorbate 60 Polymers 0.000 claims 1
- 239000005864 Sulphur Substances 0.000 claims 1
- 150000004645 aluminates Chemical class 0.000 claims 1
- 235000011194 food seasoning agent Nutrition 0.000 claims 1
- -1 sulphur aluminic acid Salt Chemical class 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract description 16
- 238000002360 preparation method Methods 0.000 abstract description 8
- 238000002156 mixing Methods 0.000 abstract description 4
- 239000011810 insulating material Substances 0.000 abstract 1
- 239000004570 mortar (masonry) Substances 0.000 description 23
- 239000000243 solution Substances 0.000 description 20
- 229910052681 coesite Inorganic materials 0.000 description 10
- 239000004567 concrete Substances 0.000 description 10
- 229910052906 cristobalite Inorganic materials 0.000 description 10
- 229910052682 stishovite Inorganic materials 0.000 description 10
- 229910052905 tridymite Inorganic materials 0.000 description 10
- 238000000465 moulding Methods 0.000 description 9
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- 229920003086 cellulose ether Polymers 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 239000011083 cement mortar Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 239000004566 building material Substances 0.000 description 2
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 2
- 235000013539 calcium stearate Nutrition 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000004035 construction material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000004816 latex Substances 0.000 description 2
- 229920000126 latex Polymers 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 238000000352 supercritical drying Methods 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- CBOCVOKPQGJKKJ-UHFFFAOYSA-L Calcium formate Chemical compound [Ca+2].[O-]C=O.[O-]C=O CBOCVOKPQGJKKJ-UHFFFAOYSA-L 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 229910003978 SiClx Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 241001147416 Ursus maritimus Species 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229940044172 calcium formate Drugs 0.000 description 1
- 235000019255 calcium formate Nutrition 0.000 description 1
- 239000004281 calcium formate Substances 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical class O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 1
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 1
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000012453 solvate Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
- C04B28/04—Portland cements
-
- 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
- C04B28/06—Aluminous cements
-
- 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
- C04B2111/52—Sound-insulating 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
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
Landscapes
- 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)
- Silicon Compounds (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a preparation method of a hydrophobic silica aerogel cement-based thermal insulation material, which comprises the following steps: (1) dispersing an oil-in-water surfactant in water to prepare a solution; adding hydrophobic silica aerogel into the solution prepared in the step (1), stirring until the hydrophobic silica aerogel is soaked, then adding cement, and uniformly stirring to obtain a product; or adding cement into the solution prepared in the step (1), uniformly stirring, then adding hydrophobic silica aerogel, and stirring until the silica aerogel is soaked or wrapped by cement slurry, thereby obtaining a product. The preparation method disclosed by the invention is simple in process, and the obtained hydrophobic silica aerogel cement-based heat-insulating material is good in mixing property, easy to form and easy to regulate and control in heat-insulating property, and can be used in the field of wall heat insulation.
Description
Technical field
The invention belongs to the preparation field of energy-saving building materialses, and hydrophobic silica gas is prepared in particular to one kind
The method of gel cement base insulation material.
Background technology
Silica (SiO2) aeroge is a kind of low-density with three-dimensional net structure, lower thermal conductivity, high-ratio surface
Long-pending light nanoporous amorphous solid material, it is with special nano aperture network structure and in the side such as calorifics, acoustics, optics
The excellent specific property in face and had broad application prospects in the heat-insulated field of building heat preservation.At present, its application form has aeroge
(" the application of the aeroge in building energy saving field such as grain, aeroge glass, aerogel heat-proof coating, aerogel blanket and aerogel plate
Form and effect ", Guo Xiaoyu, Zhang Guanglei, Zhao Xiaoyun, etc.,《Insulation material and power-saving technology》, 2015 (6):1-7).
The existing architectural intermediate water cement-based material in China accounts for the overwhelming majority, by SiO2Aeroge is applied in mortar, concrete
Then there is huge meaning, and the research report of this respect is seldom at present.One is just SiO the reason for critically important2Aeroge is only
Have and keep its three-dimensional manometer network structure to play good function of heat insulation in mortar or concrete, and to keep it
Inherent structure must be prevented from steam and enter in order to avoid causing caving in for nano-pore structure, i.e., stable as functional stuffing/aggregate is equal
The even SiO being distributed in hydraulicity inorganic coagulation material2Aeroge must be hydrophobicity, thus exist in application technology tired
It is difficult.
But SiO2Aeroge still has the possibility of popularization and application in concrete and field of mortar.Kim(”Chemical
retreating for gel-typed aerogel and insulation performance of cement
containing aerogel”,Kim S,Seo J,Cha J,et al..Construction and Building
Materials,2013,40:501-505.) and Ni Xingyuan (" Nano-meter SiO_2s2Insulation of the aeroge in energy-conserving construction wall
Characteristic research ", Ni Xingyuan, Wang Bo, Shen Jun, etc.,《(the 3rd point of 7th Chinese functional material and its application academic meeting paper collection
Volume)》, 2010:350-352) etc. different SiO are have studied respectively2Influence of the aeroge doping to cement mortar heat conductivility, knot
Fruit, which shows, is doped with SiO2The thermal conductivity factor of cement mortar after aeroge, which exists, to decline to a great extent.
French Achard (" A study on the thermal performance of exterior walls
covered with a recently patented silica-aerogel-based insulating coating”,
Ibrahim M,Biwole P H,Wurtz E,et al.,Building and Environment,2014,81:112-122)
Et al. by SiO2Aerogel particle is applied to the packed layer of grey cement mortar, can build up section bar in advance, can also pass through machine spraying or people
Work is built by laying bricks or stones for external wall, coating density 200kg/m3When thermal conductivity factor be 0.027W/ (mK).
Gao(”Gustavsen A,et al.Aerogel-incorporated concrete:an experimental
study”,Gao T,Jelle B P,Construction and Building Materials,2014,52:130-136) etc.
People is investigated different SiO2Influence of the aerogel particle doping to concrete density, mechanical property and thermal conductivity factor.
The studies above provides reference well and reference for aeroge concrete and mortar research.But relevant report for
Hydrophobic SiO2Aeroge exists with the compatibility of inorganic gel materials in itself disputes on, and the experiment such as Kim finds hydrophobic SiO2Aeroge needs
Will by methanol solvate just can in cement slurry it is preferably scattered, and the very big and excessive alcohol reagent of the harmfulness of methanol can be led
Cause the change of aeroge internal structure；Hydrophobic SiO is thought in Gao etc. experimental study2Aeroge is handled without alcoholic solvent also can be straight
Preferably scattered shaping, this hydrophobic SiO thought with most experiments result are connected in concrete2Aeroge and hydrophilic cement
Compatible and binding ability between sill is poor to be disagreed, it is possible the reason for the characteristics of being mortar, concrete material itself just
It is to have very big uncertainty and pardon, the SiO of addition2By doping etc., some factors are limited aeroge, its own certain
A little performances are likely to be covered by the macro property of concrete or mortar.
The present invention is in relevant experiment it has also been found that cement and hydrophobic SiO2Aeroge can be mixed preferably in the dry state
It is combined (aeroge quality is the 2% of cement quality).But because the hydrophobic grouping on surface is present, hydrophobic SiO2Aeroge table
Face can be higher, and the extremely smooth ball in surface is similar in cement slurry, it is virtually impossible to cement slurry produce cohesive force (see
Fig. 1), operation and use during aerogel powder depart from the problem of it is serious.In consideration of it, it is necessary to hydrophobic SiO2Aeroge enters
Row processing can be just added in cement slurry uniformly to be mixed with cement slurry.And the document and patent of report are disclosed at present
Without the effective ways for improving above mentioned problem.
The content of the invention
[technical problem]
, should it is an object of the invention to provide a kind of method for preparing hydrophobic silica aerogel cement base insulation material
Preparation method process is simple, and hydrophobic silica aerogel cement base insulation material obtained by this method has mix
Good, shaping is easy, the advantages that properties of product easy-regulating.
[technical scheme]
By the research of inventor, find to can be used to as solubilizer using oil-in-water type surfactant to prepare hydrophobic
Aerosil cement base insulation material, so as to complete the present invention.
The invention provides a kind of method for preparing hydrophobic silica aerogel cement base insulation material, methods described is adopted
The aqueous solution is configured to by the use of oil-in-water type surfactant as solubilizer, hydrophobic silica aerogel is added and is stirred,
Then it is molded again with cement mixing, so as to which the hydrophobic silica aerogel cement base insulation material according to the present invention is made.
According to an embodiment of the invention, the preparation side of the hydrophobic silica aerogel cement base insulation material
Method comprises the following steps：
(1) by oil-in-water type surfactant-dispersed in water to be configured to solution；And
(2) hydrophobic silica aerogel is added in solution made from step (1), stirring is until by the hydrophobic dioxy
SiClx aeroge infiltrates, and then adds cement, stirs, so as to obtain product；Or
Cement is added into solution made from step (1), stirs, then adds hydrophobic silica aerogel, stir
Mix until the hydrophobic silica aerogel is infiltrated or wrapped up by cement slurry, so as to obtain product.
Herein, there is no particular limitation for the cement, it may include, for example, common portland cement, aluminic acid salt solution
Mud, sulphate aluminium cement, decoration cement etc..
In accordance with the present invention it is preferred that the HLB value of the oil-in-water type surfactant is 8 to 18.
According to the present invention, the oil-in-water type surfactant include selected from Brij30, Span 20, Atbs G-2111,
Atlas G-1218、Atlas G-1734、Ameroxl OE-10、Tween 61、Tween 81、Atlas G-7596P、Tween
65、Tween 85、Atlas G-3930、Atlas G-2142、Atlas G-2162、S-307、Solulan C-24、P.E.G
400、Ameroxol OE-20、Solulan 16、Tween 20、Solulan 25、Tween 40、Atlas G-3820、Tween
60th, at least one of Solulan 97, Tween 80, Myrj 52 and Myrj 53.
In the present invention, the oil-in-water type surfactant is used as solubilizer, dispersant and stabilizer, and it can be right
The stable solubilising of system plays good effect.
According to the present invention, the hydrophobic silica aerogel includes freeze-drying, supercritical drying, constant pressure and dry
The aerogel powder or particle of the preparations such as method, but it is not limited to this.
In addition, in preparation in accordance with the present invention, in step (2), while the cement is added or afterwards,
It also can be optionally added other materials, such as mineral admixture (such as flyash, miberal powder), aggregate (such as EPS particles, glass bead
Deng) and additive (such as water reducer, redispersable latex powder, calcium stearate, calcium formate, cellulose ether, hydrogen peroxide) in one
Kind or multiple material, but not limited to this.
In accordance with the present invention it is preferred that in above-mentioned preparation method, cement：Water：The weight ratio of oil-in-water type surfactant
Can be 0.01-20:0.01-10:0.001-1, preferably 0.1-10:0.1-5:0.001-0.3, and most preferably 2:1:0.03.
Now, the weight based on the cement, the addition of the hydrophobic silica aerogel can be more than 0, and for 200wt% with
Under, preferably 2wt%-100wt%.
[beneficial effect]
Procedure produced according to the present invention is simple, and the hydrophobic silica aerogel cement base insulation material obtained is mixed
Conjunction property is good, and shaping is easy, heat-insulating property easy-regulating, therefore has good application in wall thermal insulating field, can further prepare
Both there is some strength, again there is good thermal and insulating performance, the insulation material of sound insulation value, structural thermal insulation material even to tie
Structure material.
Brief description of the drawings
Fig. 1 is not using the hydrophobic silica aerogel of oil-in-water type surfactant processing and the mixture of cement
The image of (comparative example).
Fig. 2 is the hydrophobic silica airsetting handled using oil-in-water type surfactant according to the embodiment of the present invention 5
The image of glue cement base insulation material.
After Fig. 3 is the hydrophobic silica aerogel cement base insulation material drying and moulding according to the embodiment of the present invention 7
Image.
Embodiment
Hereinafter, it will be described with reference to the accompanying drawings the preferred embodiment of the present invention.It is although reference picture is shown in the drawings
Embodiment describes the present invention, but it should be noted that embodiment provided by the present invention is used only as illustrating, rather than
It is intended to technical spirit and core element and the operation of the limitation present invention.In the technical spirit and the premise of scope for not departing from the present invention
Under, illustrative embodiments of the invention can change in a variety of manners.
Referring to Fig. 1, when not using the processing of oil-in-water type surfactant, the phase of hydrophobic silica aerogel and cement
Capacitive is poor, can be produced in cement slurry similar to the extremely smooth ball in surface, it is virtually impossible to is produced with cement slurry viscous
Tie power.
Referring to Fig. 2, in handled using oil-in-water type surfactant hydrophobic two according to one embodiment of the present invention
In silica aerogel cement base insulation material, it can be seen that hydrophobic silica aerogel particle is preferably scattered in cement
In slurry, illustrate that its mix and compatibility are preferable.
Referring to Fig. 3, it is molded according to the hydrophobic silica aerogel cement base insulation material of one embodiment of the present invention
Easily, hydrophobic silica aerogel good dispersion, and can further prepare both there is some strength, there is good insulation again
Heat-proof quality, the insulation material of sound insulation value, structural thermal insulation material even structural material.
Embodiment
Test the production firm of raw materials
Hydrophobic silica aerogel powder is that Kunshan Lansheng Building Materials Co., Ltd. is produced using freeze-drying, hydrophobic two
Silica aerogel particles are that Guangdong Alison High-technology Co., Ltd. is produced using supercritical drying,
Cement includes the brill board P.O 42.5R cement of Hebei Yan Xin building materials Co., Ltd production, Tangshan polar bear special type water
The quick hardening sulphoaluminate cement marked as 42.5,52.5 of mud Co., Ltd production.
Oil-in-water type surfactant produces for Japanese Kanto Kagaku K. K..
[embodiment]
Embodiment according to the embodiment of the present invention is listed below, these embodiments are only to the further of the present invention
Illustrate, rather than limitation the scope of the present invention.
Embodiment 1：
(1) 200g water and 6g Span 20 are added into 1L beakers, is stirred to be configured to solution；
(2) 400g P.O42.5R cement is added in the solution obtained by step (1), stirs, then add 8g
Hydrophobic silica aerogel powder, stirring are infiltrated or wrapped up by cement slurry up to hydrophobic silica aerogel, so as to
To product, i.e. hydrophobic silica aerogel thermal insulation mortar.
After mortar blanks and moulding and conserving 28 days, it is 0.413W/ (mk), dry density 1400kg/m to measure thermal conductivity factor3。
Embodiment 2：
(1) 200g water and 6g Ameroxl OE-10 are added into 1L beakers, is stirred to be configured to solution；
(2) 400g P.O42.5R cement is added in the solution obtained by step (1), stirs, then add 16g
Hydrophobic silica aerogel powder, stirring are infiltrated or wrapped up by cement slurry up to hydrophobic silica aerogel, so as to
To product, i.e. hydrophobic silica aerogel thermal insulation mortar.
After mortar blanks and moulding and conserving 28 days, it is 0.340W/ (mk), dry density 1300kg/m to measure thermal conductivity factor3。
Embodiment 3：
(1) 400g water and 6g Span 20 are added into 1L beakers, is stirred to be configured to solution；
(2) 400g P.O42.5R cement is added in the solution obtained by step (1), stirs, then add 24g
Hydrophobic silica aerogel powder, stirring are infiltrated or wrapped up by cement slurry up to hydrophobic silica aerogel, so as to
To product, i.e. hydrophobic silica aerogel thermal insulation mortar.
After mortar blanks and moulding and conserving 28 days, it is 0.266W/ (mk), dry density 1220kg/m to measure thermal conductivity factor3。
Embodiment 4：
(1) 200g water and 14g Span 20 are added into 1L beakers, is stirred to be configured to solution；
(2) by 300g 52.5R cement, the redispersable latex powders of 3.0g FX 2350,8.0g calcium stearates, 6.0g formic acid
(HPMC, molecular weight 4 are added to the solution obtained by step (1) after ten thousand) uniformly being mixed in 5L plastic barrels for calcium, 0.6g cellulose ethers
In, stir, add the solution after 100g water mixes with 16g hydrogen peroxide (concentration 30%), it is rapid to stir, then
300g hydrophobic silica aerogel particles are added, stirring is until hydrophobic silica aerogel is infiltrated or wrapped by cement slurry
Wrap up in, so as to obtain product, i.e. hydrophobic silica aerogel thermal insulation mortar.
After concrete formation conserves 28 days, it is 0.049W/ (mK), dry density 280kg/m to measure thermal conductivity factor3。
Embodiment 5：
(1) 800g water and 24g Span 20 are added into 1L beakers, is stirred to be configured to solution；
(2) 340g hydrophobic silica aerogel particles are added in the solution obtained by step (1), stirring will be until will dredge
Water aerosil infiltrates, and then adds the homogeneous mixture of 200g P.O42.5R cement and 50g S95 level miberal powders,
Stir, so as to obtain product, i.e. hydrophobic silica aerogel thermal insulation mortar.
After mortar blanks and moulding and conserving 28 days, it is 0.062W/ (mK), dry density 290kg/m to measure thermal conductivity factor3。
Embodiment 6：
(1) 1000g water and 24g Span 20 are added into 1L beakers, is stirred to be configured to solution；
(2) by 200g P.O42.5R cement, 2.0g rubber powders, 0.4g cellulose ethers and 0.4g chopped fibers in 5L measuring cups
It is added to after even mixing in the solution obtained by step (1), is stirred for uniformly, then adding 340g hydrophobic silica aerogels
Grain, stirring is until hydrophobic silica aerogel is wrapped up or infiltrated by cement slurry, so as to obtain product, i.e. hydrophobic silica
Aeroge thermal insulation mortar.
After mortar blanks and moulding and conserving 28 days, it is 0.058W/ (mK), dry density 260kg/m to measure thermal conductivity factor3。
Embodiment 7：
(1) 1200g and 36g Ameroxl OE-10 are added into 1L beakers, are stirred to be configured to solution；
(2) by 2400g strength grades be 42.5 quick hardening sulphoaluminate cement, 2.0g rubber powders, 0.4g cellulose ethers and
0.4g chopped fibers are uniformly added in the solution obtained by step (1) after mixing in 5L measuring cups, stir, then add
200g hydrophobic silica aerogel particles, stirring are infiltrated or wrapped up by cement slurry up to hydrophobic silica aerogel, from
And obtain product, i.e. hydrophobic silica aerogel thermal insulation mortar.
After mortar blanks and moulding and conserving 28 days, it is 0.189W/ (mK), dry density 960kg/m to measure thermal conductivity factor3。
Embodiment 8：
(1) 1200g water and 24g Ameroxl OE-10 are added into 1L beakers, is stirred to be configured to solution；
(2) 200g hydrophobic silica aerogel particles are added in the solution obtained by step (1), stirring will be until will dredge
Water aerosil infiltrates, and then adds 2400g P.O42.5R cement, stirs, so as to obtain product, i.e., hydrophobic
Aerosil thermal insulation mortar.
After mortar blanks and moulding and conserving 28 days, it is 0.208W/ (mK), dry density 1010kg/m to measure thermal conductivity factor3。
Comparative example
Except being not added with aeroge, and the ratio of P.O 42.5R cement and water is 2:Outside 1, with side same as Example 1
Hydrophobic silica aerogel thermal insulation mortar has been made in formula, and for mortar blanks and moulding and conserving after 28 days, it is 0.528W/ to measure thermal conductivity factor
(mK), dry density 1600kg/m3。
Claims (8)
1. a kind of method for preparing hydrophobic silica aerogel cement base insulation material, it comprises the following steps：
(1) by oil-in-water type surfactant-dispersed in water to be configured to solution；And
(2) hydrophobic silica aerogel is added in solution made from step (1), stirring is until by the hydrophobic silica
Aeroge infiltrates, and then adds cement, stirs, so as to obtain product；Or
Cement is added into solution made from step (1), is stirred, then adds hydrophobic silica aerogel, stirring is straight
Infiltrated or wrapped up by cement slurry to the aerosil, so as to obtain product.
2. according to the method for claim 1, wherein, the cement is common portland cement, aluminate cement, sulphur aluminic acid
Salt cement or decoration cement.
3. according to the method for claim 1, wherein, in step (2), while cement is added or afterwards, it is additionally added
One or more materials in mineral admixture, aggregate and additive.
4. according to the method for claim 1, wherein, the HLB value of the oil-in-water type surfactant is 8 to 18.
5. according to the method for claim 1, wherein, the oil-in-water type surfactant includes being selected from Brij30, Span
20、Atbs G-2111、Atlas G-1218、Atlas G-1734、Ameroxl OE-10、Tween 61、Tween 81、
Atlas G-7596P、Tween 65、Tween 85、Atlas G-3930、Atlas G-2142、Atlas G-2162、S-307、
Solulan C-24、P.E.G 400、Ameroxol OE-20、Solulan 16、Tween 20、Solulan 25、Tween
40th, at least one of Atlas G-3820, Tween 60, Solulan 97, Tween 80, Myrj 52 and Myrj 53.
6. according to the method for claim 1, wherein, the hydrophobic silica aerogel includes freeze-drying, surpasses and face
Aerogel powder or particle prepared by boundary's seasoning or atmosphere pressure desiccation.
7. the method according to claim 11, wherein, cement：Water：The weight ratio of oil-in-water type surfactant is 0.01-
20:0.01-10:0.001-1, preferably 0.1-10:0.1-5:0.001-0.3, and most preferably 2:1:0.03.
8. the method according to claim 11, wherein, based on the weight of the cement, the hydrophobic silica aerogel
Addition be more than 0, and be below 200wt%, preferably 2wt%-100wt%.
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| CN112408876A (en) * | 2020-11-09 | 2021-02-26 | 西南科技大学 | Cement-based porous material based on silicon dioxide and preparation method thereof |
| CN112983468A (en) * | 2021-04-20 | 2021-06-18 | 重庆交通大学 | Self-heat-preservation anti-freezing lining structure of traffic tunnel in seasonal frozen soil area |
| CN114933437A (en) * | 2022-05-06 | 2022-08-23 | 河南先创新材料研发有限公司 | Method for adding aerogel into building aggregate, waterproof mortar blanket, waterproof powder and foaming insulation board |
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| CN112408876A (en) * | 2020-11-09 | 2021-02-26 | 西南科技大学 | Cement-based porous material based on silicon dioxide and preparation method thereof |
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| CN114933437A (en) * | 2022-05-06 | 2022-08-23 | 河南先创新材料研发有限公司 | Method for adding aerogel into building aggregate, waterproof mortar blanket, waterproof powder and foaming insulation board |
| CN115259785A (en) * | 2022-07-01 | 2022-11-01 | 江苏阿路美格新材料股份有限公司 | Method for preparing aerogel polyphenyl insulation board based on wet-mixed material stirring technology |
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