CN106630930A - Method for continuously preparing aerogel heat-insulating felt - Google Patents
Method for continuously preparing aerogel heat-insulating felt Download PDFInfo
- Publication number
- CN106630930A CN106630930A CN201610857506.3A CN201610857506A CN106630930A CN 106630930 A CN106630930 A CN 106630930A CN 201610857506 A CN201610857506 A CN 201610857506A CN 106630930 A CN106630930 A CN 106630930A
- Authority
- CN
- China
- Prior art keywords
- insulation felt
- continuously preparing
- aeroge insulation
- mineral fibres
- aerogel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000004964 aerogel Substances 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 65
- 238000009413 insulation Methods 0.000 claims abstract description 40
- 238000001035 drying Methods 0.000 claims abstract description 33
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 31
- 239000011240 wet gel Substances 0.000 claims abstract description 30
- 238000001879 gelation Methods 0.000 claims abstract description 22
- 239000002557 mineral fiber Substances 0.000 claims abstract description 18
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 29
- 239000011707 mineral Substances 0.000 claims description 29
- 238000003825 pressing Methods 0.000 claims description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 239000000835 fiber Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 14
- 239000000243 solution Substances 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 12
- 239000003431 cross linking reagent Substances 0.000 claims description 10
- 239000003292 glue Substances 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 9
- 239000002270 dispersing agent Substances 0.000 claims description 8
- 235000019994 cava Nutrition 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 238000002386 leaching Methods 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 238000004513 sizing Methods 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- KUDUQBURMYMBIJ-UHFFFAOYSA-N 2-prop-2-enoyloxyethyl prop-2-enoate Chemical compound C=CC(=O)OCCOC(=O)C=C KUDUQBURMYMBIJ-UHFFFAOYSA-N 0.000 claims description 4
- 229920002748 Basalt fiber Polymers 0.000 claims description 4
- 239000004113 Sepiolite Substances 0.000 claims description 4
- 239000004115 Sodium Silicate Substances 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- JMGZBMRVDHKMKB-UHFFFAOYSA-L disodium;2-sulfobutanedioate Chemical compound [Na+].[Na+].OS(=O)(=O)C(C([O-])=O)CC([O-])=O JMGZBMRVDHKMKB-UHFFFAOYSA-L 0.000 claims description 4
- 239000010440 gypsum Substances 0.000 claims description 4
- 229910052602 gypsum Inorganic materials 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 229910052624 sepiolite Inorganic materials 0.000 claims description 4
- 235000019355 sepiolite Nutrition 0.000 claims description 4
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 4
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 3
- LRWZZZWJMFNZIK-UHFFFAOYSA-N 2-chloro-3-methyloxirane Chemical compound CC1OC1Cl LRWZZZWJMFNZIK-UHFFFAOYSA-N 0.000 claims description 3
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 3
- 239000005995 Aluminium silicate Substances 0.000 claims description 3
- 239000004593 Epoxy Substances 0.000 claims description 3
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 claims description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 3
- 230000004913 activation Effects 0.000 claims description 3
- 235000012211 aluminium silicate Nutrition 0.000 claims description 3
- 229910052599 brucite Inorganic materials 0.000 claims description 3
- 229920003086 cellulose ether Polymers 0.000 claims description 3
- 239000010881 fly ash Substances 0.000 claims description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 3
- 229920001568 phenolic resin Polymers 0.000 claims description 3
- 239000005011 phenolic resin Substances 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 3
- 239000000661 sodium alginate Substances 0.000 claims description 3
- 235000010413 sodium alginate Nutrition 0.000 claims description 3
- 229940005550 sodium alginate Drugs 0.000 claims description 3
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 3
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 3
- 239000010456 wollastonite Substances 0.000 claims description 3
- 229910052882 wollastonite Inorganic materials 0.000 claims description 3
- 239000011837 N,N-methylenebisacrylamide Substances 0.000 claims description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- 150000002734 metacrylic acid derivatives Chemical class 0.000 claims description 2
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical group C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 claims description 2
- -1 shitosan Polymers 0.000 claims description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims 1
- SREKYKXYSQMOIB-UHFFFAOYSA-N N-carbamoylsarcosine Chemical compound NC(=O)N(C)CC(O)=O SREKYKXYSQMOIB-UHFFFAOYSA-N 0.000 claims 1
- 239000002253 acid Substances 0.000 claims 1
- 229910052796 boron Inorganic materials 0.000 claims 1
- 229920000166 polytrimethylene carbonate Polymers 0.000 claims 1
- YPFDHNVEDLHUCE-UHFFFAOYSA-N propane-1,3-diol Chemical class OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 claims 1
- 239000000499 gel Substances 0.000 abstract description 15
- 239000002904 solvent Substances 0.000 abstract description 7
- 239000011810 insulating material Substances 0.000 abstract description 6
- 239000002131 composite material Substances 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 5
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 5
- 239000000843 powder Substances 0.000 abstract description 2
- 230000003213 activating effect Effects 0.000 abstract 1
- 238000013329 compounding Methods 0.000 abstract 1
- 238000004132 cross linking Methods 0.000 abstract 1
- 239000002861 polymer material Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 10
- 238000005265 energy consumption Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000032683 aging Effects 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000004321 preservation Methods 0.000 description 4
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 229910002012 Aerosil® Inorganic materials 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 150000004679 hydroxides Chemical class 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
- 239000004327 boric acid Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000000352 supercritical drying Methods 0.000 description 2
- 230000010148 water-pollination Effects 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000006253 efflorescence Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- HWGNBUXHKFFFIH-UHFFFAOYSA-I pentasodium;[oxido(phosphonatooxy)phosphoryl] phosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O HWGNBUXHKFFFIH-UHFFFAOYSA-I 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- 239000001226 triphosphate 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
- C04B30/00—Compositions for artificial stone, not containing binders
- C04B30/02—Compositions for artificial stone, not containing binders containing fibrous 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
- 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
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
-
- 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
-
- 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
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The invention relates to the field of heat-insulating materials, particularly relates to an aerogel heat-insulating material, and further relates to a method for continuously preparing an aerogel heat-insulating felt. The method comprises the following steps: activating groups on the surfaces of mineral fibers; carrying out crosslinking gelation on the mineral fibers and a hydrophilic high polymer material so that gel is formed on the surfaces of the mineral fibers and the surfaces of the mineral fibers are flexible; and evenly compounding the mineral fibers with silicon dioxide wet gel further to form composite gel, and carrying out continuous forming and stair drying on the composite gel to obtain the rolled aerogel heat-insulating felt. By the method, the aerogel heat-insulating felt can be prepared continuously and stably, solvent exchange is not required in a preparation process, an aerogel network is complete, the obtained aerogel heat-insulating felt is flexible, powder does not drop from the felt, and application of aerogel in the fields of heat insulation of buildings, pipes and kilns of the petrochemical industry and the metallurgical industry and other thermal equipment is greatly promoted.
Description
Technical field
The present invention relates to heat preserving and insulating material field, and in particular to aeroge heat preserving and insulating material, further to one kind
The method for continuously preparing aeroge insulation felt.
Background technology
Building energy consumption, industrial energy consumption are the most fast fields of current energy increase, therefore by using efficient energy conserving system
Energy consumption can effectively be reduced.It is to realize one of major measure that energy consumption is reduced wherein using heat preserving and insulating material.But tradition is protected
Warm heat-barrier material has been increasingly difficult to meet the demand of energy-conservation.Therefore the high-performance inorganic insulation that low thermal conductivity, high temperature do not fire
Material becomes the key of building thermal-insulation energy-saving technology.
Aerosil is a kind of continuous three-dimensional net structure for being mutually polymerized by nano-sized particles and being formed, because of it
Its heat conduction efficiency, convection heat transfer' heat-transfer by convection efficiency and radiant heat transfer efficiency are caused with special nanometer level microporous and skeleton structure all
Effective restriction is obtained, so aeroge has low-down thermal conductivity factor, it is at normal temperatures and pressures 0.01W/ (m.K),
It is the current minimum solid material of thermal conductivity factor in the world.Recently as research deeply and the expansion applied, aeroge by
Gradually from fields such as space flight to civil buildings heat preservation and insulation field, the heat-insulated field application of industrial heat preservation.Its energy-saving effect realizes quantity
Raising in level, therefore increasingly show huge advantage and prospect.Particularly in building wall insulation, petrochemical industry, metallurgical row
The pipeline of industry, stove and other Thermal Equipments, make heat preserving and insulating material and substitute traditional insulation material, power savings advantages with aeroge
It is the most obvious.
Aeroge performance is general to obtain required nanometer by sol-gel technology mainly by its nano aperture structures shape
Hole and corresponding gel skeleton, are then dried and remove liquid phase solvent so as to obtain aeroge.But due to molten inside gel skeleton
There is surface tension in agent, the collapse of skeleton can be caused under common drying condition, and aeroge technology of preparing core is to avoid
Because capillary force causes nano aperture structural collapse in dry run.
Supercritical Drying Technology is a kind of ripe technology for preparing aeroge, and it passes through reactor inner high voltage, makes solvent
The critical point of itself is reached in dry run, a kind of supercritical fluid is formed, solvent in a supercritical state is without obvious
Surface tension, so as to realize that gel remains intact skeleton structure in dry run.But because Supercritical Drying Technology is to raw material
Requirement is higher, and generally with high-purity organosilicon as raw material, and equipment is in high-pressure work, therefore to equipment, technological requirement pole
Height, is particularly difficult to serialization volume production.Obviously, it is difficult to meet the application of building and industrial circle.
Researcher prepares the cost that aeroge significantly reduces aeroge by constant pressure and dry, and first its raw material is adapted to
Property it is wider, be adapted to including all kinds of inorganic silicons including sodium metasilicate, and production equipment require low, energy consumption it is low.But what is existed asks
Topic is that the network defective of aeroge is more, intensity and poor toughness.Therefore strengthening and being combined becomes asking for the primary solution of aeroge application
Topic.
Chinese invention patent application number 201010515083.X discloses a kind of glass fiber reinforcement aerosil
Composite, glass fibre pretreatment is combined with silica wet gel, then aging, be dried to obtain enhanced aeroge.
It is this that enhancing phase is used as by fiber, enhancement mode aerogel composite is prepared, improve the mechanical property of aeroge, but gas
Gel is connected loosely with powder presence, and aeroge with fiber, the easy efflorescence dry linting in secondary operation.
Chinese invention patent application number 201610165874.1 discloses a kind of glass mat strengthens silica airsetting
Glue and preparation method thereof, by glass mat and aerosil glue composite drying aerogel blanket has been obtained.Glass
Fiber can only make peripheral enhancing, and aeroge itself strengthens not substantially, therefore the network collapse defect formed when being dried is more.It is logical
Often need exchange of solvent, long-time drying aging could keep the complete of aeroge network structure.
Constant pressure and dry prepares aeroge and reduces cost, but the aeroge for obtaining is broken, although with all kinds of fibrofelts
Make enhancing carrier, serious dry linting and dust is still suffered from use.And in order to prevent aeroge during constant pressure and dry
Network subsided, it usually needs up to the aging and drying of tens hours.Accordingly, there exist and be difficult to serialization, scale, stabilize system
Standby defect.
The content of the invention
For the problems referred to above, the present invention provides a kind of method for continuously preparing aeroge insulation felt.The method be by
Mineral fiber surfaces group activation, and by with hydrophilic high molecular material cross-linked gel, form mineral fiber surfaces
Gel is combined uniform rear formation plural gel so as to have flexibility, further with silica wet gel, and plural gel is connected
Continuous shaping, ladder are dried to obtain the aeroge insulation felt of rolling.The method not only realizes continuous-stable and prepares aeroge
Insulation felt, and preparation process, without the need for solvent displacement, aeroge network keeps complete, the aeroge insulation felt for obtaining
With flexibility, not dry linting has greatly promoted aeroge building heat preservation is heat-insulated, petrochemical industry, the pipeline of metallurgy industry, stove
And the application in other Thermal Equipment fields.
For achieving the above object, the present invention is adopted the following technical scheme that：
A kind of method for continuously preparing aeroge insulation felt, it is characterised in that comprise the following steps：
（1）Prepare silica wet gel
With siliceous inorganic matter as raw material, water-soluble silicon source solution is obtained by alkaline leaching, then acidifying forms silicate aqueous solution,
The pH values of solution are further modulated by ammoniacal liquor to 5-8, silica wet gel is formed；
（2）Mineral fibres gelation
Mineral fibres is formed into slurry by dispersant in water, NaOH is added, in 400-800rpm high-speed stirreds
Under the conditions of, 15-20min is activated, mineral fiber surfaces group activation is made, hydrophilic high molecular material, crosslinking agent are subsequently adding, enter
The stirring of one step obtains the mineral fibres of gelation；
（3）Prepare aerogel blanket blank
By step（1）Prepared silica wet gel, step（2）Prepared gelation mineral fibres is with volume ratio 1:2-5 matches somebody with somebody
System, adds adhesive to be well mixed, and is continuously tiled introducing mold pressing roll with waterfall shape fluid form, and mold pressing roll temperature setting is 80-
100 DEG C, aerogel blanket blank of the thickness less than 0.5cm is formed by mold pressing roll sizing and ultraviolet light；
（4）Ladder is dried
By step（3）The aerogel blanket blank for obtaining introduces Drying tunnel by carry-over pinch rolls, and Drying tunnel arranges step temperature, point
Not Wei one section of drying temperature 100-120 DEG C, two sections of temperature 130-150 DEG C, three sections of temperature 180-200 DEG C, by ladder dry, coagulate
Gelled mineral fiber is progressively dried, is interweaved with silica wet gel, uniform supporting network is formed, so as to avoid airsetting
Glue network caves in；
（5）Cooling is batched
It is dried by Drying tunnel, Jing is pulled into chill roll cooling, then batches and obtains aeroge insulation felt.
Preferably, step（1）The siliceous inorganic matter is at least in kaolin, sodium metasilicate, flyash, wollastonite
Kind.
Preferably, step（2）Described mineral fibres is basalt fibre, gypsum fiber, sepiolite fibre, shepardite fibre
At least one in dimension；
Preferably, step（2）Described dispersant is at least in calgon, sodium tripolyphosphate, sulfosuccinate sodium
Kind, consumption is the 0.3-2% of mineral fibres quality.
Preferably, step（2）Described hydrophilic high molecular material is cellulose ether, shitosan, polyvinyl alcohol, carboxymethyl
At least one in starch, sodium alginate.
Preferably, step（2）Described crosslinking agent be N,N methylene bis acrylamide, ethylene glycol diacrylate, 1,
One kind in 3- propane diols double methacrylates, boric acid, epoxychloropropane, glutaraldehyde.
It is further preferred that step（2）Described mineral fibres, NaOH, hydrophilic high molecular material, crosslinking agent
Mass ratio is：100:（5-10）:（3-5）:（0.01-0.1）.
Preferably, step（3）Described adhesive is the one kind in phenolic resin, epoxy polyester, polyurethane.
Preferably, step（4）Aerogel blanket blank is 30-60min by the time in Drying tunnel.
The present invention is activated by the group to mineral fiber surfaces, and aids in hydrophilic high molecular material cross-linked gel,
Make mineral fiber surfaces formed gel so as to have flexibility, its project advantage be mix with silica wet gel after can be formed
Be interweaved, uniform supporting network, it is further old by ultraviolet light auxiliary so as to aeroge network caves in when avoiding being dried
Change, realize continuously shaped and be dried.The method is replaced without the need for solvent, be can be continuously produced, and obtains aeroge insulation felt soft
Property is good, without dry linting, can batch.The production cost of aeroge is greatly reduced, aeroge scale is advanced and is stably produced, to airsetting
Application of the glue in fields such as building heat preservation is heat-insulated, industrial pipeline insulation, Thermal Equipments produces significant impact.
The aeroge insulation felt that one typical preparation process is obtained is in thermal and insulating performance and the equal table of use
Reveal excellent characteristic.By test, the thickness of aeroge insulation felt is 0.45cm, and density is 260kg/m3, heat conduction system
Number is less than 0.03w/mk, and with good intensity and cutting property, tensile strength is more than 250kPa.
A kind of method for continuously preparing aeroge insulation felt, the characteristics of prominent compared with existing technology and beneficial effect
It is：
1st, it is interweaved with silica wet gel by mineral fibres gelation, making gelation mineral fibres, forms uniform
Supporting network, so as to avoid caving in for aeroge network during constant pressure and dry.
2nd, gel is formed by mineral fiber surfaces, gives good flexibility, and aging realizing is aided in by ultraviolet light
It is continuous drying, batch, obtain steady quality, flexible good aeroge insulation felt.
3rd, preparation technology letter of the present invention stablizes easily-controllable, can serialization closing production, be suitable for large-scale production application.
Specific embodiment
Below by way of specific embodiment, the present invention is described in further detail, but this should not be interpreted as into the present invention
Scope be only limitted to Examples below.In the case of without departing from said method thought of the present invention, according to ordinary skill
Various replacements or change that knowledge and customary means are made, should be included in the scope of the present invention.
Embodiment 1
This enforcement row step is as follows：
（1）Prepare silica wet gel
With siliceous inorganic matter kaolin as raw material, water-soluble silicon source solution is obtained by alkaline leaching, then acidifying forms silicic acid
The aqueous solution, further modulates the pH values of solution to 5-8 by ammoniacal liquor, forms silica wet gel；
（2）Mineral fibres gelation
100kg basalt fibres and 0.3kg sodium hexametaphosphate dispersants are dispersed in water to form slurry, 10kg hydroxides are added
Sodium, under the conditions of 400rpm high-speed stirreds, activates 15min, activates basalt fibre surface group, is subsequently adding 3kg hydrophilic
Property macromolecular material polyvinyl alcohol, 0.1kg crosslinking agent boric acid, further stirring obtains the mineral fibres of gelation；
（3）Prepare aerogel blanket blank
By step（1）Prepared silica wet gel, step（2）Prepared gelation mineral fibres is with volume ratio 1:5 prepare,
Add appropriate aqueous polyurethane to be well mixed, continuously tiled introducing mold pressing roll with waterfall shape fluid form, mold pressing roll temperature setting
For 80-100 DEG C, aerogel blanket blank of the thickness less than 0.5cm is formed by mold pressing roll sizing and ultraviolet light；Aqueous poly- ammonia
The amount of ester is the 1% of silica wet gel and gelation mineral fibres volume total amount；
（4）Ladder is dried
By step（3）The aerogel blanket blank for obtaining introduces Drying tunnel by carry-over pinch rolls, and Drying tunnel arranges step temperature, point
Not Wei one section of drying temperature 100-120 DEG C, two sections of temperature 130-150 DEG C, three sections of temperature 180-200 DEG C, by ladder dry, coagulate
Gelled mineral fiber is progressively dried, is interweaved with silica wet gel, uniform supporting network is formed, so as to avoid airsetting
Glue network caves in；
（5）Cooling is batched
It is dried by Drying tunnel, Jing is pulled into chill roll cooling, then batches and obtains aeroge insulation felt.
The aeroge insulation felt that embodiment 1 is obtained shows excellent spy in thermal and insulating performance and use
Property.By test, the thickness of aeroge insulation felt is 0.45cm, and density is 260kg/m3, thermal conductivity factor is less than 0.03w/
Mk, with good intensity and cutting property, tensile strength is more than 250kPa.
Embodiment 2
This enforcement row step is as follows：
（1）Prepare silica wet gel
With siliceous inorganic matter flyash as raw material, water-soluble silicon source solution is obtained by alkaline leaching, then acidifying forms silicic acid
The aqueous solution, further modulates the pH values of solution to 5-8 by ammoniacal liquor, forms silica wet gel；
（2）Mineral fibres gelation
100kg brucite fibers and 1kg pentasodium triphosphate of dispersing agent are dispersed in water to form slurry, 5kg NaOH is added,
Under the conditions of 500rpm high-speed stirreds, 15min is activated, activate brucite fiber surface group, be subsequently adding 5kg hydrophilies high
Molecular material sodium alginate, 0.05kg crosslinking agent N, N- methylene-bisacrylamides, further stirring obtains the mineral of gelation
Fiber；（3）Prepare aerogel blanket blank
By step（1）Prepared silica wet gel, step（2）Prepared gelation mineral fibres is with volume ratio 1:3 prepare,
Add appropriate epoxy polyester to be well mixed, continuously tiled introducing mold pressing roll with waterfall shape fluid form, mold pressing roll temperature setting is
80-100 DEG C, aerogel blanket blank of the thickness less than 0.5cm is formed by mold pressing roll sizing and ultraviolet light；
（4）Ladder is dried
By step（3）The aerogel blanket blank for obtaining introduces Drying tunnel by carry-over pinch rolls, and Drying tunnel arranges step temperature, point
Not Wei one section of drying temperature 100-120 DEG C, two sections of temperature 130-150 DEG C, three sections of temperature 180-200 DEG C, by ladder dry, coagulate
Gelled mineral fiber is progressively dried, is interweaved with silica wet gel, uniform supporting network is formed, so as to avoid airsetting
Glue network caves in；
（5）Cooling is batched
It is dried by Drying tunnel, Jing is pulled into chill roll cooling, then batches and obtains aeroge insulation felt.
The aeroge insulation felt that embodiment 2 is obtained shows excellent spy in thermal and insulating performance and use
Property.By test, the thickness of aeroge insulation felt is 0.3cm, and density is 280kg/m3, thermal conductivity factor is less than 0.025w/
Mk, with good intensity and cutting property, tensile strength is more than 300kPa.
Embodiment 3
This enforcement row step is as follows：
（1）Prepare silica wet gel
With siliceous inorganic matter wollastonite as raw material, water-soluble silicon source solution is obtained by alkaline leaching, then acidifying forms silicic acid
The aqueous solution, further modulates the pH values of solution to 5-8 by ammoniacal liquor, forms silica wet gel；
（2）Mineral fibres gelation
100kg gypsum fibers and 0.5kg dispersant sulfosuccinate sodium are dispersed in water to form slurry, 10kg hydroxides are added
Sodium, under the conditions of 800rpm high-speed stirreds, activates 20min, activates gypsum fiber surface group, is subsequently adding 3kg hydrophilies
Macromolecular material shitosan, 0.1kg crosslinking agent epoxychloropropane, further stirring obtains the mineral fibres of gelation；
（3）Prepare aerogel blanket blank
By step（1）Prepared silica wet gel, step（2）Prepared gelation mineral fibres is with volume ratio 1:3 prepare,
Add appropriate phenolic resin to be well mixed, continuously tiled introducing mold pressing roll with waterfall shape fluid form, mold pressing roll temperature setting is
80-100 DEG C, aerogel blanket blank of the thickness less than 0.5cm is formed by mold pressing roll sizing and ultraviolet light
（4）Ladder is dried
By step（3）The aerogel blanket blank for obtaining introduces Drying tunnel by carry-over pinch rolls, and Drying tunnel arranges step temperature, point
Not Wei one section of drying temperature 100-120 DEG C, two sections of temperature 130-150 DEG C, three sections of temperature 180-200 DEG C, by ladder dry, coagulate
Gelled mineral fiber is progressively dried, is interweaved with silica wet gel, uniform supporting network is formed, so as to avoid airsetting
Glue network caves in；
（5）Cooling is batched
It is dried by Drying tunnel, Jing is pulled into chill roll cooling, then batches and obtains aeroge insulation felt.
The aeroge insulation felt that embodiment 3 is obtained shows excellent spy in thermal and insulating performance and use
Property.By test, the thickness of aeroge insulation felt is 0.40cm, and density is 255kg/m3, thermal conductivity factor is less than 0.028w/
Mk, with good intensity and cutting property, tensile strength is more than 320kPa.
Embodiment 4
This enforcement row step is as follows：
（1）Prepare silica wet gel
With siliceous inorganic matter sodium metasilicate as raw material, water-soluble silicon source solution is obtained by alkaline leaching, then acidifying forms silicic acid
The aqueous solution, further modulates the pH values of solution to 5-8 by ammoniacal liquor, forms silica wet gel；
（2）Mineral fibres gelation
100kg sepiolite fibres and 2kg dispersant sulfosuccinate sodium are dispersed in water to form slurry, 8kg hydroxides are added
Sodium, under the conditions of 600rpm high-speed stirreds, activates 20min, activates sepiolite fibre surface group, is subsequently adding 3kg hydrophilic
Property macromolecular material cellulose ether, 0.05kg crosslinking agents, glutaraldehyde, further stirring obtains the mineral fibres of gelation；
（3）Prepare aerogel blanket blank
By step（1）Prepared silica wet gel, step（2）Prepared gelation mineral fibres is with volume ratio 1:5 prepare,
Add appropriate aqueous polyurethane to be well mixed, continuously tiled introducing mold pressing roll with waterfall shape fluid form, mold pressing roll temperature setting
For 80-100 DEG C, aerogel blanket blank of the thickness less than 0.5cm is formed by mold pressing roll sizing and ultraviolet light；
（4）Ladder is dried
By step（3）The aerogel blanket blank for obtaining introduces Drying tunnel by carry-over pinch rolls, and Drying tunnel arranges step temperature, point
Not Wei one section of drying temperature 100-120 DEG C, two sections of temperature 130-150 DEG C, three sections of temperature 180-200 DEG C, by ladder dry, coagulate
Gelled mineral fiber is progressively dried, is interweaved with silica wet gel, uniform supporting network is formed, so as to avoid airsetting
Glue network caves in；By controlling length of tunnel and hauling speed, aerogel blanket drying time is made to reach 60min；
（5）Cooling is batched
It is dried by Drying tunnel, Jing is pulled into chill roll cooling, then batches and obtains aeroge insulation felt.
The serialization of embodiment 4 prepares the hauling speed of aerogel blanket and reaches 20m/min, the aeroge insulation felt for obtaining
It is flexible, without dry linting, can batch, can cut.
, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described
Property concept, then can make other change and modification to these embodiments.So, claims are intended to be construed to include excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without deviating from the present invention to the present invention
God and scope.So, if these modifications of the present invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising these changes and modification.
Claims (9)
1. a kind of method for continuously preparing aeroge insulation felt, it is characterised in that comprise the following steps：
（1）Prepare silica wet gel
With siliceous inorganic matter as raw material, water-soluble silicon source solution is obtained by alkaline leaching, then acidifying forms silicate aqueous solution,
The pH values of solution are further modulated by ammoniacal liquor to 5-8, silica wet gel is formed；
（2）Mineral fibres gelation
Mineral fibres is formed into slurry by dispersant in water, NaOH is added, in 400-800rpm high-speed stirreds
Under the conditions of, 15-20min is activated, mineral fiber surfaces group activation is made, hydrophilic high molecular material, crosslinking agent are subsequently adding, enter
The stirring of one step obtains the mineral fibres of gelation；
（3）Prepare aerogel blanket blank
By step（1）Prepared silica wet gel, step（2）Prepared gelation mineral fibres is with volume ratio 1:2-5 matches somebody with somebody
System, adds adhesive to be well mixed, and is continuously tiled introducing mold pressing roll with waterfall shape fluid form, and mold pressing roll temperature setting is 80-
100 DEG C, aerogel blanket blank of the thickness less than 0.5cm is formed by mold pressing roll sizing and ultraviolet light；
（4）Ladder is dried
By step（3）The aerogel blanket blank for obtaining introduces Drying tunnel by carry-over pinch rolls, and Drying tunnel arranges step temperature, point
Not Wei one section of drying temperature 100-120 DEG C, two sections of temperature 130-150 DEG C, three sections of temperature 180-200 DEG C, by ladder dry, coagulate
Gelled mineral fiber is progressively dried, is interweaved with silica wet gel, uniform supporting network is formed, so as to avoid airsetting
Glue network caves in；
（5）Cooling is batched
It is dried by Drying tunnel, Jing is pulled into chill roll cooling, then batches and obtains aeroge insulation felt.
2. a kind of method for continuously preparing aeroge insulation felt according to claim 1, it is characterised in that：Step（1）
The siliceous inorganic matter is at least one in kaolin, sodium metasilicate, flyash, wollastonite.
3. a kind of method for continuously preparing aeroge insulation felt according to claim 1, it is characterised in that：Step（2）
Described mineral fibres is at least one in basalt fibre, gypsum fiber, sepiolite fibre, brucite fiber.
4. a kind of method for continuously preparing aeroge insulation felt according to claim 1, it is characterised in that：Step（2）
Described dispersant is at least one in calgon, sodium tripolyphosphate, sulfosuccinate sodium, and consumption is mineral fibres matter
The 0.3-2% of amount.
5. a kind of method for continuously preparing aeroge insulation felt according to claim 1, it is characterised in that：Step（2）
Described hydrophilic high molecular material be cellulose ether, shitosan, polyvinyl alcohol, CMS, sodium alginate at least
It is a kind of.
6. a kind of method for continuously preparing aeroge insulation felt according to claim 1, it is characterised in that：Step（2）
Described crosslinking agent is N,N methylene bis acrylamide, ethylene glycol diacrylate, 1,3- propane diols double methacrylates, boron
One kind in acid, epoxychloropropane, glutaraldehyde.
7. a kind of method for continuously preparing aeroge insulation felt according to claim 1, it is characterised in that：Step（2）
Described mineral fibres, NaOH, hydrophilic high molecular material, the mass ratio of crosslinking agent are：100:（5-10）:（3-5）:
（0.01-0.1）.
8. a kind of method for continuously preparing aeroge insulation felt according to claim 1, it is characterised in that：Step（3）
Described adhesive is the one kind in phenolic resin, epoxy polyester, polyurethane.
9. a kind of method for continuously preparing aeroge insulation felt according to claim 1, it is characterised in that：Step（4）
Aerogel blanket blank is 30-60min by the time in Drying tunnel.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107352956A (en) * | 2017-07-15 | 2017-11-17 | 合肥皖水信息科技有限公司 | A kind of aerosol fire extinguisher heat-barrier material |
| CN107746210A (en) * | 2017-09-30 | 2018-03-02 | 烟台科立达节能科技有限公司 | Nanometer titanium dioxide silica aerogel composite pipe and preparation method thereof |
| CN108358600A (en) * | 2018-04-27 | 2018-08-03 | 天津中世恒业科技有限公司 | The process units of aeroge thermal insulating coiled material |
| CN108468908A (en) * | 2018-05-15 | 2018-08-31 | 江苏杰润绝热材料科技有限公司 | A kind of production method of collet and collet |
| CN108758173A (en) * | 2018-06-14 | 2018-11-06 | 天津摩根坤德高新科技发展有限公司 | Include the steam low energy consumption long-distance transmission pipeline and steam transmission system of aeroge |
| CN110103536A (en) * | 2018-01-31 | 2019-08-09 | 成都天府轨谷科技有限公司 | A kind of rail traffic car top decorative composite material and preparation method thereof |
| CN110156431A (en) * | 2019-05-22 | 2019-08-23 | 江南大学 | A kind of aeroge modified cotton fiber core material of vacuum heat insulation plate and preparation method thereof |
| CN111342099A (en) * | 2020-03-02 | 2020-06-26 | 成都新柯力化工科技有限公司 | Preparation method of proton exchange membrane of fiber framework fuel cell |
| CN111675529A (en) * | 2020-06-16 | 2020-09-18 | 河南爱彼爱和新材料有限公司 | Fireproof heat-insulation ceramic fiber aerogel felt and preparation method thereof |
| CN112321313A (en) * | 2020-11-30 | 2021-02-05 | 宁德时代新能源科技股份有限公司 | Ceramic fiber aerogel composite material and preparation method thereof |
| CN112723362A (en) * | 2020-12-31 | 2021-04-30 | 山东大学 | Method for preparing silicon dioxide/phenolic resin composite aerogel material by taking water glass as silicon source |
| CN114007999A (en) * | 2019-09-03 | 2022-02-01 | 株式会社Lg化学 | Aerogel felt |
| CN114773027A (en) * | 2022-06-16 | 2022-07-22 | 巩义市泛锐熠辉复合材料有限公司 | Aerogel felt prepared at low cost and preparation method thereof |
| CN115161998A (en) * | 2022-08-01 | 2022-10-11 | 江苏中矿大正表面工程技术有限公司 | In-situ preparation method of fire-resistant composite aerogel felt |
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| CN107352956A (en) * | 2017-07-15 | 2017-11-17 | 合肥皖水信息科技有限公司 | A kind of aerosol fire extinguisher heat-barrier material |
| CN107746210A (en) * | 2017-09-30 | 2018-03-02 | 烟台科立达节能科技有限公司 | Nanometer titanium dioxide silica aerogel composite pipe and preparation method thereof |
| CN110103536A (en) * | 2018-01-31 | 2019-08-09 | 成都天府轨谷科技有限公司 | A kind of rail traffic car top decorative composite material and preparation method thereof |
| CN108358600A (en) * | 2018-04-27 | 2018-08-03 | 天津中世恒业科技有限公司 | The process units of aeroge thermal insulating coiled material |
| CN108468908A (en) * | 2018-05-15 | 2018-08-31 | 江苏杰润绝热材料科技有限公司 | A kind of production method of collet and collet |
| CN108758173A (en) * | 2018-06-14 | 2018-11-06 | 天津摩根坤德高新科技发展有限公司 | Include the steam low energy consumption long-distance transmission pipeline and steam transmission system of aeroge |
| CN110156431A (en) * | 2019-05-22 | 2019-08-23 | 江南大学 | A kind of aeroge modified cotton fiber core material of vacuum heat insulation plate and preparation method thereof |
| CN114007999A (en) * | 2019-09-03 | 2022-02-01 | 株式会社Lg化学 | Aerogel felt |
| CN111342099A (en) * | 2020-03-02 | 2020-06-26 | 成都新柯力化工科技有限公司 | Preparation method of proton exchange membrane of fiber framework fuel cell |
| CN111342099B (en) * | 2020-03-02 | 2020-11-17 | 成都新柯力化工科技有限公司 | Preparation method of proton exchange membrane of fiber framework fuel cell |
| CN111675529A (en) * | 2020-06-16 | 2020-09-18 | 河南爱彼爱和新材料有限公司 | Fireproof heat-insulation ceramic fiber aerogel felt and preparation method thereof |
| CN112321313A (en) * | 2020-11-30 | 2021-02-05 | 宁德时代新能源科技股份有限公司 | Ceramic fiber aerogel composite material and preparation method thereof |
| CN112723362A (en) * | 2020-12-31 | 2021-04-30 | 山东大学 | Method for preparing silicon dioxide/phenolic resin composite aerogel material by taking water glass as silicon source |
| CN114773027A (en) * | 2022-06-16 | 2022-07-22 | 巩义市泛锐熠辉复合材料有限公司 | Aerogel felt prepared at low cost and preparation method thereof |
| CN115161998A (en) * | 2022-08-01 | 2022-10-11 | 江苏中矿大正表面工程技术有限公司 | In-situ preparation method of fire-resistant composite aerogel felt |
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Denomination of invention: A method for continuous preparation of aerogel thermal insulation felt Effective date of registration: 20231012 Granted publication date: 20190125 Pledgee: Jiangsu Taixing Rural Commercial Bank Co.,Ltd. Dasheng Branch Pledgor: Taixing Xinte refractory Co.,Ltd. Registration number: Y2023980060891 |