CN110258188A - A kind of preparation method of the super-hydrophobic heat-insulated ultra-thin felt of aeroge - Google Patents
A kind of preparation method of the super-hydrophobic heat-insulated ultra-thin felt of aeroge Download PDFInfo
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- CN110258188A CN110258188A CN201910543850.9A CN201910543850A CN110258188A CN 110258188 A CN110258188 A CN 110258188A CN 201910543850 A CN201910543850 A CN 201910543850A CN 110258188 A CN110258188 A CN 110258188A
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- aeroge
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
- D21J3/00—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds
Abstract
The invention discloses a kind of preparation methods of the super-hydrophobic heat-insulated ultra-thin felt of aeroge, belong to new material technology field.The present invention first in a solvent, then by fiber discongests aerogel powder dispersion wherein, and then by the secondary forming process of preforming re-dry, the super-hydrophobic heat-insulated ultra-thin felt of aeroge is prepared.The super-hydrophobic heat-insulated ultra-thin felt of aeroge of the invention, it is simpler using the aerogel blanket processing technology of post forming；And manufactured aerogel blanket is not allowed to lose powder, and avoids dust pollution and performance loss；Thickness can accomplish 500 μm -5000 μm, compensate for aerogel blanket using upper deficiency, and the entirety that can be widely applied to the accurate industry such as electronics and new energy car battery packet is heat-insulated, can play fire prevention, fire-retardant, heat-insulated, the effects of keeping the temperature.
Description
Technical field
The present invention relates to a kind of preparation methods of the super-hydrophobic heat-insulated ultra-thin felt of aeroge, belong to new material technology field.
Background technique
Aerogel blanket can mainly apply the insulation in fields such as petrochemical pipe, municipal heating systems pipeline, steel kilns
Heat preservation.Using temperature at 700 degree or so.Advantage is exactly that low thin thickness, light weight, thermal coefficient, safety and environmental protection, construction are convenient.
Have to use in the prior art and aeroge is sprayed at glass fiber felt surface, or prepares aeroge in such a way that colloidal sol is mixed with fiber
Heat insulation felt, but aerogel blanket needs supercritical drying to can be only achieved good effect, this complex process is cumbersome, and has dried
It is scattered at rear aerogel particle and dust, and general requirements can not make under certain specific application environments all in 3mm or more
With.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of preparation method of super-hydrophobic heat-insulated ultra-thin felt of aeroge.
The first purpose of the invention is to provide a kind of preparation method of the super-hydrophobic heat-insulated ultra-thin felt of aeroge, including it is as follows
Step:
(1) in parts by mass, 0.1~5 part of dispersing agent is dispersed in 90~120 parts of solvents, 1~15 part of aeroge is added
Powder, high speed dispersion are evenly dispersed in a solvent by powder；
(2) in parts by mass, 0.1~5 part of fiber is discongested agent to be dispersed in the slurry that step (1) obtains, 1-15 is added
Part fiber is discongested, and is formed after discongesting；
(3) step (2) product after molding is dried, obtains the super-hydrophobic heat-insulated mat of aeroge.
Further, the dispersing agent is cellulose, polyvinyl alcohol, polyethylene glycol, polyvinylpyrrolidone, fatty acid
One of class dispersing agent, aliphatic amide type dispersing agent, esters dispersing agent or more than one combinations.
Further, the solvent is water.
Further, the aerogel powder includes SiO2Aeroge, TiO2Aeroge, ZrO2Aeroge, Al2O3Airsetting
One or more of glue, NiO aeroge, ZnO aeroge, carbon aerogels, carbon nanotube aerogel, graphene aerogel are mixed
It closes.
Further, in step (1), the revolving speed of high speed dispersion is 500-2000rpm, and jitter time is 10~20min.
Further, the fiber discongest agent be poly- methylcellulose, hydroxyethyl cellulose, EVA, polyacrylamide,
Polyvinylpyrrolidone, polyethylene glycol oxide, stearic acid, neopelex, quaternary ammonium compound, lecithin, amino acid pattern, sweet tea
The mixing of one or more of dish alkaline, alkyl glucoside, fatty glyceride, fatty acid sorbitan, polysorbate.
Further, the fiber is one of glass fibre, staple fibre, natural fiber or a variety of.
Further, in step (2), the molding is using suction filtration molding or pressure filtration molding.
Further, in step (2), the temperature of the drying is 60~100 DEG C, and pressure is 0.1-1 atmospheric pressure.
Further, in step (2), described discongesting is to pass through mechanical stirring under normal temperature and pressure, 100-1000rpm,
Discongest 0.5-1h.
A second object of the present invention is to provide the super-hydrophobic heat-insulated ultra-thin felts of aeroge that the method is prepared.
The beneficial effects of the present invention are:
(1) the super-hydrophobic heat-insulated ultra-thin felt of aeroge of the invention, using the aerogel blanket processing technology of post forming, more
Simply；
(2) the super-hydrophobic heat-insulated ultra-thin felt of aeroge made of the method for the present invention is not allowed to lose powder, avoid dust pollution and
Performance loss；
(3) the super-hydrophobic heat-insulated ultra-thin felt thickness of aeroge of the invention can accomplish 1000 μm -5000 μm, compensate for airsetting
Rubber mat applies upper deficiency, and the entirety that can be widely applied to the accurate industry such as electronics and new energy car battery packet is heat-insulated,
Can play fire prevention, it is fire-retardant, heat-insulated, heat preservation the effects of.Just in case lithium battery generation is on fire, can also strive for more for escape and fire fighting
Time.On the other hand, the ultra-thin felt of aeroge can be applied in battery core spaced heat, it may also be used for the electronic products such as laptop
Insulation.
Detailed description of the invention
Fig. 1 is the comparison diagram of heat insulation felt of the present invention and commercially available heat insulation felt, wherein left figure is heat insulation felt of the present invention, and right figure is
Commercially available heat insulation felt.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, so that those skilled in the art can be with
It more fully understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
Embodiment 1: the preparation of the super-hydrophobic heat-insulated ultra-thin felt of aeroge
The preparation of the super-hydrophobic heat-insulated mat of aeroge includes the following steps:
(1) in parts by mass, 2 parts of polyvinyl alcohol dispersing agents are dispersed in 100 parts of water, 5 parts of SiO is added2Airsetting rubber powder
Body, the high speed dispersion 15min under 1000rpm revolving speed are evenly dispersed in water by powder；
(2) in parts by mass, 2 parts of fibers are discongested the poly- methylcellulose of agent to be dispersed in the slurry that step (1) obtains, is added
Enter 5 parts of glass fibres to be discongested, at normal temperatures and pressures, 30min is stirred using 300rpm, the process of discongesting can add water dilute
It releases, guarantees fiber not conglomeration, do not damage, measured after discongesting according to thickness, formed using suction filtration；
(3) step (2) product after molding is dried under 100 DEG C of normal pressures, it is super-hydrophobic heat-insulated thin obtains aeroge
Felt.
Embodiment 2: the preparation of the super-hydrophobic heat-insulated ultra-thin felt of aeroge
(1) in parts by mass, 1 part of polyvinyl alcohol is dispersed in 90 parts of water, 10 parts of SiO is added2Aerogel powder,
High speed dispersion 10min under 1500rpm revolving speed, powder is evenly dispersed in water；
(2) in parts by mass, 1 part of fiber agent polyvinylpyrrolidone is discongested to be dispersed in the slurry that step (1) obtains,
10 parts of glass fibres are added to be discongested, at normal temperatures and pressures, 1h are stirred using 500rpm, the process of discongesting can add water dilute
It releases, guarantees fiber not conglomeration, do not damage, measured after discongesting according to thickness, formed using suction filtration；
(3) step (2) product after molding is dried under 80 DEG C of normal pressures, it is super-hydrophobic heat-insulated thin obtains aeroge
Felt.
Embodiment 3: the preparation of the super-hydrophobic heat-insulated ultra-thin felt of aeroge
(1) in parts by mass, 3 parts of polyvinyl alcohol are dispersed in 120 parts of water, 8 parts of SiO is added2Aerogel powder,
High speed dispersion 15min under 1500rpm revolving speed, powder is evenly dispersed in water；
(2) in parts by mass, 3 parts of fibers are discongested the poly- methylcellulose of agent to be dispersed in the slurry that step (1) obtains, is added
Enter 8 parts of glass fibres to be discongested, at normal temperatures and pressures, 30min is stirred using 500rpm, the process of discongesting can add water dilute
It releases, guarantees fiber not conglomeration, do not damage, measured after discongesting according to thickness, formed using suction filtration；
(3) step (2) product after molding is subjected to negative pressure drying under 60 DEG C, 0.1 atmospheric pressure, it is super obtains aeroge
Hydrophobic heat-insulated mat.
Embodiment 4:
The super-hydrophobic heat-insulated ultra-thin felt of aeroge be prepared to Examples 1 to 3 and commercially available aerogel heat-proof felt carry out
Performance test.The results are shown in Table 1.
Heat insulation, which is used, is placed in temperature for heat insulation felt to be measured to use infrared imaging after placement 1min in 80 DEG C of thermal station
Temperature measurer detects the temperature on heat insulation felt surface respectively.
Hydrophobic effect tests contact angle using contact angle tester.Drop is dripped in heat insulation felt surface to be measured, contact is passed through
Angle tester calculates the contact angle meter of drop.
Picking rate is detected according to GB/T 20810-2018.
1 aerogel heat-proof felt performance parameter of table
| Thickness (mm) | Adiabatic temperature is poor (DEG C) | Contact angle | Picking rate | |
| Embodiment 1 | 0.5 | 38 | ≥160 | ≤5‰ |
| Embodiment 2 | 2 | 50 | ≥160 | ≤5‰ |
| Embodiment 3 | 5 | 67 | ≥160 | ≤5‰ |
| Commercially available heat insulation felt | 10 | 65 | ≥160 | >=10% |
Fig. 1 is the comparison diagram of the aeroge super-hydrophobic heat-insulated ultra-thin felt and commercially available heat insulation felt of the embodiment of the present invention 2, You Tuke
Know, the thickness of heat insulation felt of the invention is substantially reduced, and closer consolidation, is not easy to lose powder.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
It encloses without being limited thereto.Those skilled in the art's made equivalent substitute or transformation on the basis of the present invention, in the present invention
Protection scope within.Protection scope of the present invention is subject to claims.
Claims (10)
1. a kind of preparation method of the super-hydrophobic heat-insulated ultra-thin felt of aeroge, which comprises the steps of:
(1) in parts by mass, 0.1~5 part of dispersing agent is dispersed in 90~120 parts of solvents, 1~15 part of airsetting rubber powder is added
Body, high speed dispersion are evenly dispersed in a solvent by powder；
(2) in parts by mass, 0.1~5 part of fiber is discongested agent to be dispersed in the slurry that step (1) obtains, 1-15 parts of fibres is added
Dimension is discongested, and is formed after discongesting；
(3) step (2) product after molding is dried, obtains the super-hydrophobic heat-insulated mat of aeroge.
2. the method according to claim 1, wherein the dispersing agent is cellulose, polyvinyl alcohol, poly- second two
One of alcohol, polyvinylpyrrolidone, fatty acid dispersing agent, aliphatic amide type dispersing agent, esters dispersing agent are a kind of
Combination of the above.
3. the method according to claim 1, wherein the solvent is water.
4. the method according to claim 1, wherein the aerogel powder includes SiO2Aeroge, TiO2Gas
Gel, ZrO2Aeroge, Al2O3Aeroge, NiO aeroge, ZnO aeroge, carbon aerogels, carbon nanotube aerogel, graphene
The mixing of one or more of aeroge.
5. the method according to claim 1, wherein the revolving speed of high speed dispersion is 500- in step (1)
2000rpm, jitter time are 10~20min.
6. the method according to claim 1, wherein it is poly- methylcellulose, hydroxyl second that the fiber, which discongests agent,
Base cellulose, EVA, polyacrylamide, polyvinylpyrrolidone, polyethylene glycol oxide, stearic acid, neopelex, season
Ammonium compound, lecithin, amino acid pattern, betaine type, alkyl glucoside, fatty glyceride, fatty acid sorbitan, polysorbate
One or more of mixing.
7. the method according to claim 1, wherein the fiber is glass fibre, staple fibre, natural fibre
One of dimension is a variety of.
8. the method according to claim 1, wherein the molding is using suction filtration molding in step (2)
Or pressure filtration molding.
9. the method according to claim 1, wherein in step (2), the temperature of the drying is 60~
100 DEG C, pressure is 0.1-1 atmospheric pressure.
10. the super-hydrophobic heat-insulated ultra-thin felt of the aeroge that method according to any one of claims 1 to 9 is prepared.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910543850.9A CN110258188A (en) | 2019-06-21 | 2019-06-21 | A kind of preparation method of the super-hydrophobic heat-insulated ultra-thin felt of aeroge |
| PCT/CN2019/119450 WO2020253092A1 (en) | 2019-06-21 | 2019-11-19 | Manufacturing method for aerogel superhydrophobic thermally-insulating ultrathin felt |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910543850.9A CN110258188A (en) | 2019-06-21 | 2019-06-21 | A kind of preparation method of the super-hydrophobic heat-insulated ultra-thin felt of aeroge |
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| Publication Number | Publication Date |
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| CN110258188A true CN110258188A (en) | 2019-09-20 |
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| CN201910543850.9A Pending CN110258188A (en) | 2019-06-21 | 2019-06-21 | A kind of preparation method of the super-hydrophobic heat-insulated ultra-thin felt of aeroge |
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| WO (1) | WO2020253092A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020253092A1 (en) * | 2019-06-21 | 2020-12-24 | 苏州卓纳纳米技术有限公司 | Manufacturing method for aerogel superhydrophobic thermally-insulating ultrathin felt |
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