CN117510175A - Novel heat insulation core material of passive fireproof system - Google Patents
Novel heat insulation core material of passive fireproof system Download PDFInfo
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- CN117510175A CN117510175A CN202311467700.7A CN202311467700A CN117510175A CN 117510175 A CN117510175 A CN 117510175A CN 202311467700 A CN202311467700 A CN 202311467700A CN 117510175 A CN117510175 A CN 117510175A
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- 238000009413 insulation Methods 0.000 title claims abstract description 43
- 239000011162 core material Substances 0.000 title claims abstract description 32
- 239000002002 slurry Substances 0.000 claims abstract description 54
- 239000000378 calcium silicate Substances 0.000 claims abstract description 23
- 229910052918 calcium silicate Inorganic materials 0.000 claims abstract description 23
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000835 fiber Substances 0.000 claims abstract description 16
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000004890 Hydrophobing Agent Substances 0.000 claims abstract description 9
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 8
- 239000004964 aerogel Substances 0.000 claims description 28
- 239000000203 mixture Substances 0.000 claims description 26
- 238000003756 stirring Methods 0.000 claims description 25
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 19
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 claims description 18
- 235000019353 potassium silicate Nutrition 0.000 claims description 15
- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical compound CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 claims description 14
- 239000000843 powder Substances 0.000 claims description 11
- 239000011324 bead Substances 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 10
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 10
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 claims description 10
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 9
- UQEAIHBTYFGYIE-UHFFFAOYSA-N hexamethyldisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)C UQEAIHBTYFGYIE-UHFFFAOYSA-N 0.000 claims description 9
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 9
- -1 polydimethylsiloxane Polymers 0.000 claims description 9
- YGUFXEJWPRRAEK-UHFFFAOYSA-N dodecyl(triethoxy)silane Chemical compound CCCCCCCCCCCC[Si](OCC)(OCC)OCC YGUFXEJWPRRAEK-UHFFFAOYSA-N 0.000 claims description 8
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 8
- 239000004111 Potassium silicate Substances 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 claims description 7
- 229910052913 potassium silicate Inorganic materials 0.000 claims description 7
- 229910021487 silica fume Inorganic materials 0.000 claims description 7
- SCPWMSBAGXEGPW-UHFFFAOYSA-N dodecyl(trimethoxy)silane Chemical compound CCCCCCCCCCCC[Si](OC)(OC)OC SCPWMSBAGXEGPW-UHFFFAOYSA-N 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- 239000004848 polyfunctional curative Substances 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- XYRAEZLPSATLHH-UHFFFAOYSA-N trisodium methoxy(trioxido)silane Chemical compound [Na+].[Na+].[Na+].CO[Si]([O-])([O-])[O-] XYRAEZLPSATLHH-UHFFFAOYSA-N 0.000 claims description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 239000004115 Sodium Silicate Substances 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 3
- 239000010456 wollastonite Substances 0.000 claims description 3
- 229910052882 wollastonite Inorganic materials 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 230000002940 repellent Effects 0.000 claims 1
- 239000005871 repellent Substances 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 239000002253 acid Substances 0.000 abstract description 3
- 239000003513 alkali Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 abstract description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract 1
- 229910052791 calcium Inorganic materials 0.000 abstract 1
- 239000011575 calcium Substances 0.000 abstract 1
- 230000002209 hydrophobic effect Effects 0.000 description 7
- 238000004321 preservation Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 5
- 239000000920 calcium hydroxide Substances 0.000 description 5
- 235000011116 calcium hydroxide Nutrition 0.000 description 5
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 5
- 229910021485 fumed silica Inorganic materials 0.000 description 5
- 239000012774 insulation material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229910052901 montmorillonite Inorganic materials 0.000 description 5
- 229920003043 Cellulose fiber Polymers 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- QQQSFSZALRVCSZ-UHFFFAOYSA-N triethoxysilane Chemical compound CCO[SiH](OCC)OCC QQQSFSZALRVCSZ-UHFFFAOYSA-N 0.000 description 4
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000011490 mineral wool Substances 0.000 description 2
- CAQWNKXTMBFBGI-UHFFFAOYSA-N C.[Na] Chemical compound C.[Na] CAQWNKXTMBFBGI-UHFFFAOYSA-N 0.000 description 1
- 239000005997 Calcium carbide Substances 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000011499 joint compound Substances 0.000 description 1
- 239000004005 microsphere Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical group CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- FXSGDOZPBLGOIN-UHFFFAOYSA-N trihydroxy(methoxy)silane Chemical compound CO[Si](O)(O)O FXSGDOZPBLGOIN-UHFFFAOYSA-N 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- 239000010457 zeolite Substances 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
- C04B28/18—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 mixtures of the silica-lime type
- C04B28/186—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 mixtures of the silica-lime type containing formed Ca-silicates before the final hardening step
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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)
- Thermal Insulation (AREA)
Abstract
The invention relates to the technical field of heat insulation boards, and provides a novel heat insulation core material of a passive fireproof system, which comprises the following steps: taking reacted slurry, wherein the slurry adopts one of calcium silicate slurry or aluminum silicate slurry; the calcium silicate slurry is prepared by adding 8 to 55 mass percent of calcium material, 3 to 55 mass percent of siliceous material and 0.5 to 15 mass percent of cellulosic raw material into water and then carrying out hydrothermal reaction in a pressure vessel to prepare slurry; the aluminum silicate slurry comprises 10-60% of aluminum silicate fibers in mass portion. The heat-insulating core material provided by the invention has the temperature resistance of 1100℃: the long-term stable use temperature is realized, the overall water absorption is less than 2%, the heat conductivity coefficient is less than 0.03W/m.K at normal temperature, the hydrophobicity reaches 98%, the production cost is low, the overall acid and alkali resistance is improved, the hydrophobing agent and the heat insulation core material form a stable chemical structure, and the structure is stable and is not easy to be influenced by the use condition.
Description
Technical Field
The invention relates to the technical field of heat insulation boards, in particular to a novel heat insulation core material of a passive fireproof system.
Background
In the construction process of various buildings for office work and resident residence, the requirements on the heat insulation performance and the fireproof performance of the wall body are more and more stringent, the standards are more and more high, and how to improve the fireproof performance of the wall body on the premise of meeting the heat insulation requirements of the buildings is always the direction of key research of people. The existing external thermal insulation system of the external wall is mainly divided into an inorganic external thermal insulation system and an organic external thermal insulation system, wherein the inorganic external thermal insulation system mainly comprises a rock wool board system and a novel thermosetting modified thermal insulation system, and has the advantages of good fireproof performance, high cost, difficult construction and poor thermal insulation performance; the organic external wall heat preservation system has good heat preservation effect, low cost and good construction, but has poor fireproof performance, for example, the traditional organic heat preservation system has a structure of a leveling layer, bonding mortar, a heat preservation layer and a plastering mortar composite heat preservation cloth, or a layer of vitrified micro bubble leveling layer is additionally arranged on the outer side of the plastering mortar, the fireproof performance can not meet the requirements of GB50016-2014 6.7.3, and the existing external wall heat preservation system also has to be provided with a fireproof window and a fireproof isolation belt to ensure the fireproof performance in the construction process, so that the construction procedure is additionally increased, and obviously, the existing external wall heat preservation system can not effectively meet the demands of people.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a novel heat insulation core material of a passive fireproof system, and solves the problem that the fireproof performance of the existing heat insulation material in the market can not meet the current requirements.
In order to achieve the above purpose, the invention is realized by the following technical scheme: a novel heat insulation core material of a passive fire protection system, comprising the following steps:
step one: taking reacted slurry, wherein the slurry adopts one of calcium silicate slurry or aluminum silicate slurry;
wherein, the calcium silicate slurry is prepared by adding 8 to 55 percent of calcareous material, 3 to 55 percent of siliceous material and 0.5 to 15 percent of cellulosic raw material into water according to mass proportion, and then carrying out hydrothermal reaction in a pressure vessel to prepare slurry;
wherein, the aluminum silicate slurry comprises 10 to 60 percent of aluminum silicate fiber according to mass portion;
step two: placing 1000-5000 parts of slurry into a stirring tank for stirring, and sequentially obtaining 1-100 parts of heat insulation filler, 1-10 parts of hardener and 1-20 parts of hydrophobing agent during stirring to obtain stirred gelled liquid slurry;
step three: pouring the gel slurry stirred in the second step into a die on a press, utilizing a filter screen at the bottom of the die, pressing out water in the gel slurry by starting the press to obtain wet materials, and drying to obtain the heat-insulating core material.
Preferably, the slurry in the second step is placed into a stirring tank to be stirred for 6-10 min, then 1-100 parts of aerogel powder or particles, 1-100 parts of heat insulation filler, 1-10 parts of hardener and 1-20 parts of hydrophobing agent raw material are sequentially added every 0.5-1.5 min, and stirring is continued for 15-20 min, so that the stirred gelled fluid slurry is obtained.
Preferably, the fibrous raw material uses one or a combination of high silica fiber, aluminum silicate fiber, wollastonite fiber and carbon fiber.
Preferably, the heat insulation filler is one or a combination of more of alumina aerogel, gas phase alumina, gas phase silica, hollow glass beads or silica fume, and the density is 30-200 kg/m 3 The specific surface area is 100-1000 m2/g.
Preferably, the hardening agent is one or a combination of a plurality of sodium silicate, silica sol, potassium silicate and methyl sodium silicate.
Preferably, the hydrophobizing agent is a composition of any two of methyltrimethoxysilane, methyltriethoxysilane, polymethyltriethoxysilane, dodecyltrimethoxysilane, dodecyltriethoxysilane, polydimethylsiloxane, hexamethyldisiloxane and hexamethyldisilazane, and the mass ratio is 1:1.
the invention provides a novel heat insulation core material of a passive fireproof system. The beneficial effects are as follows:
during the preparation process, aerogel powder or particles are added and the addition amount of the heat insulation filler is changed, so that the heat insulation effect is obviously improved compared with that of the traditional heat insulation material, and the heat insulation material has the temperature resistance of 1100 ℃: the heat insulation core material prepared by the method has the advantages that the water absorption rate of the whole heat insulation core material is less than 2%, the heat conductivity coefficient is less than 0.03W/m.K at normal temperature, the hydrophobicity reaches 98%, the production cost is low, the acid and alkali resistance of the whole heat insulation core material is improved, the hydrophobing agent and the heat insulation core material form a stable chemical structure, and the structure is stable and is not easy to be influenced by using conditions.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described in the following in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention provides a novel heat insulation core material of a passive fireproof system, which comprises the following components:
as one aspect of the present application, the present application provides a novel heat insulation core material for a passive fire protection system, comprising the steps of:
step one: adding water into 40-50% of calcareous material, 40-50% of siliceous material and 5-10% of cellulosic raw material according to mass proportion, and then performing hydrothermal reaction in a pressure vessel to prepare slurry;
wherein, the calcareous raw material adopts one or more of the compositions of calcium carbide mud, cement, slaked lime and quicklime, and one or more of the compositions are mixed with water to prepare slurry, and the calcareous fiber is prepared under the hydrothermal condition of 195 ℃, the diameter of the fiber is 0.6 mu m, the length is 12 mu m, and the length-diameter ratio is 100;
the siliceous raw material is one or more of the compositions of fly ash, silica fume, zeolite, montmorillonite, quartz powder, diatomite and soot, and one or more of the compositions are mixed with water to prepare slurry, and the siliceous fiber is prepared under the hydrothermal condition of 195 ℃ and has the diameter of 0.3 mu m, the length of 6 mu m and the length-diameter ratio of 50;
wherein, the fibrous raw material uses one or a plurality of compositions of high silica fiber, aluminum silicate fiber, wollastonite fiber and carbon fiber, and one or a plurality of compositions are mixed with water to prepare slurry, and the fiber is prepared under the hydrothermal condition of 195 ℃ and has the diameter of 0.6 mu m, the length of 12 mu m and the length-diameter ratio of 100;
step two: placing 1000-3000 parts of slurry into a stirring tank to stir for 6-10 min, then sequentially adding 1-100 parts of aerogel powder or particles, 1-100 parts of heat insulation filler, 1-10 parts of hardener and 1-20 parts of hydrophobing agent raw material every 0.5-1.5 min, and continuing stirring for 15-20 min to obtain the stirred gelled liquid slurry;
wherein the density of gel powder or particles is 30-200 kg/m 3 Specific surface area of 100-1000 m 2 /g；
Wherein, the composition ratio of the heat insulation filler is as follows:
a. any one of alumina aerogel, gas phase alumina, gas phase silica, hollow glass beads and silica fume;
b. a combination of fumed silica and hollow glass microspheres;
c. a combination of fumed silica and silica fume;
d. fumed silica and composition for vapor phase oxidation
e. Composition of fumed silica and alumina aerogel
f. A combination of hollow glass beads and silica fume;
e. fumed silica, hollow glass beads and silica fume;
wherein, the components of the hardener are as follows:
a. any one of water glass, silica sol, potassium silicate and sodium methyl silicate;
b. a combination of both water glass and silica sol;
c. water glass, silica sol and potassium silicate;
d. water glass, silica sol, potassium silicate and sodium methyl silicate;
e. a combination of both silica sol and potassium silicate;
f. a combination of both silica sol and sodium methyl silicate;
g. a combination of potassium silicate and methyl silicic acid;
wherein the hydrophobic agent is a composition of any two of methyltrimethoxysilane, methyltriethoxysilane, polymethyltriethoxysilane, dodecyltrimethoxysilane, dodecyltriethoxysilane, polydimethylsiloxane, hexamethyldisiloxane and hexamethyldisilazane, and the mass ratio is 1:1, a step of;
a. a composition of methyltrimethoxysilane and methyltriethoxysilane, and the mass ratio is 1:1, a step of;
b. a composition of methyltrimethoxysilane and polymethyltriethoxysilane, and the mass ratio is 1:1, a step of;
c. a composition of methyltrimethoxysilane and dodecyltrimethoxysilane, and the mass ratio is 1:1, a step of;
d. a composition of methyltrimethoxysilane and dodecyltriethoxysilane, and the mass ratio is 1:1, a step of;
e. a composition of methyltrimethoxysilane and polydimethylsiloxane, and the mass ratio is 1:1, a step of;
f. a composition of methyltrimethoxysilane and hexamethyldisiloxane, and a mass ratio of 1:1, a step of;
g. a composition of methyltrimethoxysilane and hexamethyldisilazane, and a mass ratio of 1:1, a step of;
h. a composition of methyltriethoxysilane and polymethyltriethoxysilane, and the mass ratio is 1:1, a step of;
i. a composition of methyltriethoxysilane and dodecyltrimethoxysilane, and the mass ratio is 1:1, a step of;
j. a composition of methyltriethoxysilane and dodecyltriethoxysilane, and the mass ratio is 1:1, a step of;
k. a composition of methyltriethoxysilane and polydimethylsiloxane, and the mass ratio is 1:1, a step of;
l, methyltriethoxysilane and hexamethyldisiloxane, and the mass ratio is 1:1, a step of;
m, methyltriethoxysilane and hexamethyldisilazane, and the mass ratio is 1:1, a step of;
n, polymethyl triethoxy silane and dodecyl trimethoxy silane, and the mass ratio is 1:1, a step of;
o, polymethyl triethoxysilane and polydimethylsiloxane, and the mass ratio is 1:1, a step of;
p, polymethyl triethoxysilane and hexamethyldisiloxane, and the mass ratio is 1:1, a step of;
q, polymethyl triethoxysilane and hexamethyldisilazane, and the mass ratio is 1:1, a step of;
r, dodecyl triethoxy silane and polydimethylsiloxane, and the mass ratio is 1:1, a step of;
s, dodecyl triethoxy silane and hexamethyldisiloxane, and the mass ratio is 1:1, a step of;
t, dodecyl triethoxy silane and hexamethyldisilazane, and the mass ratio is 1:1, a step of;
u, a composition of two of polydimethylsiloxane and hexamethyldisiloxane, and a mass ratio of 1:1, a step of;
v, a composition of two of polydimethylsiloxane and hexamethyldisilazane, and the mass ratio is 1:1, a step of;
w, a composition of two of hexamethyldisiloxane and hexamethyldisilazane, and the mass ratio is 1:1, a step of;
step three: preparing a mould with proper size and shape, pouring the cementing slurry stirred in the second step into the mould on a press, utilizing a filter screen at the bottom of the mould, pressing water in the cementing slurry out by starting the press to obtain wet materials, and drying to obtain the heat-insulating core material.
The performance characteristics are as follows:
temperature resistant 1100℃: long-term stable use temperature;
thermal stability: heat shrinkage at 1100 ℃ is less than 2%;
excellent fireproof performance: the manufactured ventilating duct has the fire resistance of 3 hours without carbonization after test;
building field: the fireproof rock wool board is used at a temperature lower than 650 ℃ and can absorb water even after being subjected to hydrophobic treatment for a long time, and the heat insulation core material can resist the temperature of 1100 ℃ and has the overall hydrophobic property reaching 98% for a long time;
the adopted hydrophobing agent can achieve the following effects: the acid and alkali resistance of the whole heat insulation material is improved, the hydrophobing agent and the heat insulation core material form a stable chemical structure, and the structure is stable and is not easy to be influenced by using conditions.
Example 1:
based on the heat insulation core material of the novel passive fireproof system, the aerogel calcium silicate board provided by the embodiment is prepared by adding water into the slaked lime 46%, the montmorillonite 46% and the cellulose fiber 8% according to the mass portion, performing hydrothermal reaction in a pressure container to prepare slurry, putting 1000 parts of slurry into a stirring tank, stirring for 8min, sequentially adding 8 parts of aerogel powder or particles, 80 parts of hollow glass beads, 5 parts of water glass and 15 parts of methyltrimethoxysilane every 1min, continuously stirring for 18min, obtaining the stirred gel slurry, and finally obtaining the integral hydrophobic aerogel calcium silicate board through drying treatment after molding.
Example 2:
based on the heat insulation core material of the novel passive fireproof system, the aerogel calcium silicate board provided by the embodiment is prepared by adding water into the slaked lime 46%, the montmorillonite 46% and the cellulose fiber 8% according to the mass portion, performing hydrothermal reaction in a pressure container to prepare slurry, putting 1000 parts of slurry into a stirring tank, stirring for 8min, sequentially adding 12 parts of aerogel powder or particles, 80 parts of hollow glass beads, 5 parts of water glass and 15 parts of methyltrimethoxysilane every 1min, continuously stirring for 18min, obtaining the stirred gel slurry, and finally obtaining the integral hydrophobic aerogel calcium silicate board through drying treatment after molding.
Example 3:
based on the heat insulation core material of the novel passive fireproof system, the aerogel calcium silicate board provided by the embodiment is prepared by adding water into the slaked lime 46%, the montmorillonite 46% and the cellulose fiber 8% according to the mass portion, performing hydrothermal reaction in a pressure container to prepare slurry, taking 2000 parts of slurry, putting the slurry into a stirring tank, stirring for 8min, sequentially adding 12 parts of aerogel powder or particles, 80 parts of hollow glass beads, 5 parts of water glass and 15 parts of methyltrimethoxysilane every 1min, continuously stirring for 18min, obtaining the stirred gel slurry, and finally obtaining the integrally hydrophobic aerogel calcium silicate board through drying treatment after molding by a mold.
Example 4:
based on the heat insulation core material of the novel passive fireproof system, the aerogel calcium silicate board provided by the embodiment is prepared by adding water into the slaked lime 46%, the montmorillonite 46% and the cellulose fiber 8% according to the mass portion, performing hydrothermal reaction in a pressure container to prepare slurry, putting 1000 parts of slurry into a stirring tank, stirring for 8min, sequentially adding 20 parts of aerogel powder or particles, 80 parts of hollow glass beads, 5 parts of water glass and 15 parts of methyltrimethoxysilane every 1min, continuously stirring for 18min, obtaining the stirred gel slurry, and finally obtaining the integral hydrophobic aerogel calcium silicate board through drying treatment after molding.
Experimental example:
five groups of substantially identical calcium silicate boards were selected for testing the heat insulation performance, and experiments were performed at a hot surface temperature of 500 to 800 ℃ using calcium silicate as an example, and the aerogel calcium silicate boards of the four groups of examples were used as experimental examples, and the calcium silicate boards of the prior art were used as comparative examples, and comparative experiments were performed, with the results shown in table 1 below.
Table 1, aerogel floating bead insulation panel test data table:
table 2, comparison table of thermal conductivity of different insulation materials at different temperatures:
the result shows that in the process of the heat-insulating core material, the quantity of aerogel powder or particles is added and the addition amount of the heat-insulating filler is selected, so that the heat-insulating effect of the prepared aerogel calcium silicate board is obviously improved compared with that of the traditional calcium silicate board, meanwhile, the overall water absorption rate of the aerogel calcium silicate board is less than 2%, the heat conductivity coefficient of the aerogel calcium silicate board is less than 0.03W/m.K at normal temperature, the hydrophobicity reaches 98%, the heat-insulating effect of the aerogel felt is achieved at 550-750 ℃, the production cost is lower, and compared with the traditional heat-insulating material, the heat-insulating effect of the aerogel calcium silicate board is obviously improved, and the heat resistance is 1100℃: and the use temperature is stable for a long time, and the prepared heat-insulating core material is prepared.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The novel heat insulation core material of the passive fireproof system is characterized by comprising the following steps of:
step one: taking reacted slurry, wherein the slurry adopts one of calcium silicate slurry or aluminum silicate slurry;
wherein, the calcium silicate slurry is prepared by adding 8 to 55 percent of calcareous material, 3 to 55 percent of siliceous material and 0.5 to 15 percent of cellulosic raw material into water according to mass proportion, and then carrying out hydrothermal reaction in a pressure vessel to prepare slurry;
wherein, the aluminum silicate slurry comprises 10 to 60 percent of aluminum silicate fiber according to mass portion;
step two: placing 1000-5000 parts of slurry into a stirring tank for stirring, and sequentially obtaining 1-100 parts of heat insulation filler, 1-10 parts of hardener and 1-20 parts of hydrophobing agent during stirring to obtain stirred gelled liquid slurry;
step three: pouring the gel slurry stirred in the second step into a die on a press, utilizing a filter screen at the bottom of the die, pressing out water in the gel slurry by starting the press to obtain wet materials, and drying to obtain the heat-insulating core material.
2. The heat-insulating core material of the novel passive fireproof system according to claim 1, wherein in the second step, the slurry is placed into a stirring tank to be stirred for 6-10 min, then 1-100 parts of aerogel powder or particles, 1-100 parts of heat-insulating filler, 1-10 parts of hardener and 1-20 parts of hydrophobing agent raw materials are sequentially added every 0.5-1.5 min, and stirring is continued for 15-20 min, so that the stirred gelled fluid slurry is obtained.
3. The heat-insulating core material of the novel passive fire protection system according to claim 1, wherein the fibrous raw material is one or a combination of a plurality of high silica fibers, aluminum silicate fibers, wollastonite fibers and carbon fibers.
4. The heat insulation core material of the novel passive fireproof system according to claim 1, wherein the heat insulation filler is one or a combination of more of alumina aerogel, gas phase alumina, gas phase silica, hollow glass beads or silica fume, and the density is 30-200 kg/m 3 The specific surface area is 100-1000 m2/g.
5. The heat-insulating core material of the novel passive fire protection system according to claim 1, wherein the hardening agent is one or a combination of several of sodium silicate, silica sol, potassium silicate and sodium methyl silicate.
6. The heat-insulating core material of the novel passive fire protection system according to claim 1, wherein the water repellent is a composition of any two of methyltrimethoxysilane, methyltriethoxysilane, polymethyltriethoxysilane, dodecyltrimethoxysilane, dodecyltriethoxysilane, polydimethylsiloxane, hexamethyldisiloxane and hexamethyldisilazane, and the mass ratio is 1:1.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102825650A (en) * | 2012-07-20 | 2012-12-19 | 郭立平 | Making method of high-strength light-weight integral-hydrophobic xonotlite fireproof insulation board |
| CN111978062A (en) * | 2020-08-28 | 2020-11-24 | 浙江阿斯克建材科技股份有限公司 | Process method of inorganic nano silicon-based calcium silicate heat insulation product |
| CN113416050A (en) * | 2021-07-21 | 2021-09-21 | 陕西建工建材科技有限公司 | Asbestos-free light high-strength fireproof calcium silicate board and preparation method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102825650A (en) * | 2012-07-20 | 2012-12-19 | 郭立平 | Making method of high-strength light-weight integral-hydrophobic xonotlite fireproof insulation board |
| CN111978062A (en) * | 2020-08-28 | 2020-11-24 | 浙江阿斯克建材科技股份有限公司 | Process method of inorganic nano silicon-based calcium silicate heat insulation product |
| CN113416050A (en) * | 2021-07-21 | 2021-09-21 | 陕西建工建材科技有限公司 | Asbestos-free light high-strength fireproof calcium silicate board and preparation method thereof |
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