CN103466998B - A kind of Carbon aerogel thermal insulation material and preparation method thereof - Google Patents
A kind of Carbon aerogel thermal insulation material and preparation method thereof Download PDFInfo
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- CN103466998B CN103466998B CN201310421121.9A CN201310421121A CN103466998B CN 103466998 B CN103466998 B CN 103466998B CN 201310421121 A CN201310421121 A CN 201310421121A CN 103466998 B CN103466998 B CN 103466998B
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Abstract
The present invention is directed to silica aerogel in prior art expensive, and problem, particularly a kind of Carbon aerogel thermal insulation material and preparation method thereof such as common heat preserving and insulating material thermal conductivity is large.Carbon aerogel thermal insulation material, is made up of manmade inorganic fibre, carbon material, dispersion agent and caking agent, wherein, the ratio of quality and the number of copies of each component such as under: manmade inorganic fibre 100, carbon material 0-200, dispersion agent 0.5-2.0, caking agent 0.5-2.0.Carbon aerogel thermal insulation material in the present invention, morphologically, can be powder, can be slurry, also can be felt material or sheet material.This Carbon aerogel thermal insulation material thermal conductivity is little, moderate, is easy to construction and promotes, can be widely used in building, industrial equipments and piping insulation; Preparation method's cost is low, simple, easy handling.
Description
Technical field
The invention belongs to heat preserving and insulating material field, particularly a kind of Carbon aerogel thermal insulation material and preparation method thereof.
Background technology
The nineties in last century, the scientific research personnel of US National Aeronautics and Space Administration (NASA) researches and develops novel space thermal insulation reflection enamel coating (Therma-Cover) of one of employing for solving aerospacecraft heat transfer control problem, this material is that the small ceramic particle be suspended in inertia latex by some is formed, it has the thermal properties such as high-reflectivity, high radiant rate, low thermal conductivity, low heat storage coefficient, has remarkable heat insulating reflecting function.This hitech materials promotes the use of the people by space industry abroad, in building and industrial plants, and exports to China, in some large scale industry facilities.But blemish in an otherwise perfect thing, this material expensive price makes domestic many industries hope that thing is heaved a sigh really, is difficult to bear.
Same NASA NASA is for solving suit and completely cut off extraneous high/low temperature and researching and developing and made type material aerogel, and this material full name is aerosil.Because aerogel has nano-porous structure, density is low, and voidage is high, specific surface area high, thus makes aerogel have extremely low thermal conductivity, has valuable application potential in heat preservation and insulation field.In aerogel research, silica aerogel is the product that everybody gazes at jointly, and the whole world has dropped into a large amount of manpowers, material resources, financial resources carry out Study and appliance exploitation, and this product obtains application in many high-tech areas, but its high price, still cannot promote in general industry application.
Summary of the invention
For solving above technical problem, the present invention is directed to silica aerogel in prior art expensive, and the problem such as common heat preserving and insulating material thermal conductivity is large, a kind of Carbon aerogel thermal insulation material and preparation method are provided, this Carbon aerogel thermal insulation material thermal conductivity is little, moderate, be easy to construction and promote, building, industrial equipments and piping insulation can be widely used in; Preparation method's cost is low, simple, easy handling.
Solve a kind of Carbon aerogel thermal insulation material in the present invention of above technical problem, be made up of manmade inorganic fibre, carbon material, dispersion agent and caking agent, wherein, the ratio of quality and the number of copies of each component such as under:
Manmade inorganic fibre 100
Carbon material 0-200
Dispersion agent 0.5-2.0
Caking agent 0.5-2.0
The mass fraction ratio of above-mentioned each component can be preferably as follows:
Manmade inorganic fibre 100
Carbon material 20-80
Dispersion agent 1.0-1.5
Caking agent 1.0-1.5
Described manmade inorganic fibre selectable from glass fiber, aluminum silicate fiber, rock mineral wool fibre, sapphire whisker, containing any one or a few the mixture in zirconium fiber, artificial mullite fiber, haplobasalt fiber, quartz glass fibre, boron fibre etc.
Any one or a few mixture in the optional self-expanding graphite of described carbon material, graphite, gac, charcoal, carbon black etc.
Above-mentioned dispersion agent can be selected from Disodium sulfosuccinate, triethanolamine oleate, coconut oil diethanol amide, dodecylbenzene Soxylat A 25-7, castor oil polyoxyethylene ether, any one or a few the mixture in ether of cellulose etc.
Optional any one or a few the mixture in polyacrylate dispersion, VAE emulsion, vinyl acetate emulsion, organosilicon crylic acid latex, benzene emulsion etc. of described caking agent.
Carbon aerogel thermal insulation material in the present invention, morphologically, can be powder, can be slurry, also can be felt material or sheet material.
The step preparing powder material mixes for by formula each starting material being added in dry-powder mixer.
Preparation slurry stage is that (1) weighs each component by formula;
(2) in high-speed mixing equipment, doubly water is added according to the 5-100 of formula constituent total mass in step (1);
(3) add caking agent and dispersion agent successively, stir 20-40min;
(4) add manmade inorganic fibre, the carbon material of described proportioning more successively, stir 20-50min, obtained slurry, to obtain final product;
This slurry can directly use, and in-place forming is coated on equipment surface, or does caking agent use, and in insulation equipment use process, the high temperature of equipment makes material airsetting gel;
Preparing step described in felt material or sheet material is:
(1) each component is weighed by formula;
(2) in high-speed mixing equipment, doubly water is added according to the 5-100 of formula constituent total mass in step (1);
(3) add caking agent and dispersion agent successively, stir 20-40min;
(4) add manmade inorganic fibre, the carbon material of described proportioning more successively, stir 20-50min, obtained slurry;
(5) slurry obtained for step (4) is poured in mould, slough moisture by vacuum suck method, or dripped by placement nature and to anhydrate point, or slough moisture by compacting, shapingly obtain flaky material;
(6) flaky material step (5) obtained is dried, temperature 100-150 DEG C;
(7) flaky material step (6) obtained is 200-300 DEG C of expansion, and airsetting gel, to obtain final product.
Carbon aerogel thermal insulation material in the present invention is soft radiationless, without convection current heat preserving and insulating material, normal temperature thermal conductivity is 0.02-0.03W/ (mK), and at the temperature of 450-550 DEG C, its thermal conductivity is 0.07--0.085W/ (mK).
In the present invention, the beneficial effect of Carbon aerogel thermal insulation material is:
(1) low, the good heat insulating of thermal conductivity: the heat preserving and insulating material obtained by carbon material and inorganic fibre compound, carbon material is in the fibre dispersed, shaping, dehydrate after, high-temperature expansion, airsetting gel process, full interfibrous space filled by carbon aerogels class material, makes air in heat preserving and insulating material can not unrestricted flow, produces without convection current; And the carbon material of black prevents thermal radiation.Normal temperature thermal conductivity is 0.02-0.03W/ (mK), and under the high temperature of 500 DEG C, its thermal conductivity is between 0.07--0.085W/ (mK).
And the common inorganic fibrefelt of aerogel-congtg and the normal temperature thermal conductivity of composite silicate thermal insulation felt are not 0.045W/ (mK), the thermal conductivity at the temperature of 500 DEG C is between 0.15-0.18W/ (mK).
(2) moderate, there is great using value and market potential: a kind of Carbon aerogel thermal insulation material of the present invention, relative to silica aerogel class material, has great price advantage.The price of silica aerogel product 1000-2000 unit/kilogram, obtained heat preserving and insulating material price is extremely expensive, can not use by spread.And the price of the carbon materials such as expanded graphite be 15-25 unit/kilogram, obtained heat preserving and insulating material price is significantly less than the heat preserving and insulating material obtained by silica aerogel, suits large area to popularize.
(3), maintain soft, do not burn, thermal conductivity is little, be easy to the advantages such as construction while, a kind of Carbon aerogel thermal insulation material material of the present invention, completely not containing fibrous magnesium silicate, meets the requirement of Occupational health protection and environment protection.
Embodiment
Be described in further detail below in conjunction with the foregoing invention content of embodiment to a kind of Carbon aerogel thermal insulation material material of the present invention.
But this should be interpreted as that the scope of the above-mentioned theme of the present invention is only limitted to following embodiment.Without departing from the idea case in the present invention described above, according to ordinary skill knowledge and customary means, make various replacement and change, all should comprise within the scope of the invention.
No matter be powder, slurry, or felt material, sheet material, just application form is different, total invention thinking is consistent with formula, when needing the thermal conductivity of test material, finally all needs to make felt material or sheet material, so, do not do when illustrating, embodiment is all make felt material or sheet material, but can not therefore illustrate by thinking of the present invention and the obtained carbon aerogels heat insulating powder of formula and slurry not within the scope of the present invention.
According to general plotting of the present invention, contriver has manufactured experimently carbon aerogels heat insulating felt material or the sheet material of many batches of different ingredients components, and measures the correlation performance parameters of comparative example and each embodiment sample by the following method:
(1), thermal conductivity:
On thermal conductivity measuring apparatus, by GB GB/T10294-2008 standard test, measuring temperature is 500 DEG C.
(2), combustionproperty:
Whether direct lighter naked light is lighted, see and burn.
Directly gained is bought from market respectively with comparative example 1-2() compare, investigate its heat conductivility and combustion case.
Comparative example 1
The thick common pure aluminium silicate insulation quilt of 20mm.
Comparative example 2
20mm thick fiber comprehensive silicon aerogel blanket.
embodiment 1
A kind of Carbon aerogel thermal insulation material, main ingredient comprises: manmade inorganic fibre, expanded graphite, dispersion agent, caking agent etc., and wherein, each constituent mass is than as follows:
Aluminum silicate fiber 100
Expanded graphite 0
Coconut oil diethanol amide 0.5
Vinyl acetate emulsion 0.5
Produce according to the technique comprised the steps:
(1), in high-speed mixing equipment, add water according to 5 times of said components (manmade inorganic fibre, carbon material, dispersion agent, caking agent) total mass, start high-speed stirring;
(2) add coconut oil diethanol amide and the vinyl acetate emulsion of described proportioning, successively, stir 20 minutes;
(3) add aluminum silicate fiber, the expanded graphite of described proportioning, successively, stir 20 minutes, obtained slurry;
(4), slurry obtained for step (3) is poured in mould, slough moisture by vacuum suck method, or dripped by placement nature and to anhydrate point, or slough moisture by compacting, shapingly obtain flaky material;
(5) flaky material, step (4) obtained is 100 DEG C of oven dry;
(6) flaky material, by step (5) obtained is 200 DEG C of expansions, and airsetting gel, obtains a kind of Carbon aerogel thermal insulation material.
With this Carbon aerogel thermal insulation material for sample, test above-mentioned several performances.
embodiment 2
A kind of Carbon aerogel thermal insulation material, main ingredient comprises: manmade inorganic fibre, expanded graphite, dispersion agent, caking agent etc., and wherein, each constituent mass is than as follows:
Basalt fibre 100
Expanded graphite 200
Coconut oil diethanol amide 0.5
Disodium sulfosuccinate 1.5
Benzene emulsion 2.0
Produce according to the technique comprised the steps:
(1), in high-speed mixing equipment, add water according to 100 times of said components (manmade inorganic fibre, carbon material, dispersion agent, caking agent) total mass, start high-speed stirring;
(2) add the coconut oil diethanol amide of described proportioning, Disodium sulfosuccinate and benzene emulsion, successively, stir 40 minutes;
(3) add basalt fibre, the expanded graphite of described proportioning, successively, stir 50 minutes, obtained slurry;
(4), slurry obtained for step (3) is poured in mould, slough moisture by vacuum suck method, or dripped by placement nature and to anhydrate point, or slough moisture by compacting, shapingly obtain flaky material;
(5) flaky material, step (4) obtained is 150 DEG C of oven dry;
(6) flaky material, by step (5) obtained is 300 DEG C of expansions, and airsetting gel, obtains a kind of Carbon aerogel thermal insulation material.
With this Carbon aerogel thermal insulation material for sample, test above-mentioned several performances.
Some materials have the feature of aerogel, such as closed-cell expanded perlite, expanded vermiculite, diatomite, expanded graphite, gac etc., control certain processing condition, makes material internal produce nano level space, in space, air is solidified, cannot unrestricted flow, just has the characteristic of aerogel.
Carbon material is by after process, and just may have the characteristic of aerogel: as gac, density is little, and volume is large, and surface-area is large, and thermal conductivity is little, just has good effect as heat preserving and insulating material; Expanded graphite is the ideal material making aerogel, the expansion multiplying power of expanded graphite is at 10-350, after expanding, the apparent density of material is at 3-100 kilogram/cubic metre, voidage up to 90-99.7%, bore hole size 1-100nm, many physical parameters are all almost suitable with silica aerogel, there is low-down thermal conductivity, and carbon material is conveniently easy to get, low price, make heat preserving and insulating material by suitable mode and technique, there is great using value and market potential.
embodiment 3
A kind of Carbon aerogel thermal insulation material, main ingredient comprises: manmade inorganic fibre, carbon material, dispersion agent, caking agent etc., and wherein, each constituent mass is than as follows:
Basalt fibre 50
Artificial mullite fiber 50
Expanded graphite 10
Gac 10
Disodium sulfosuccinate 0.2
Ether of cellulose 0.8
Benzene emulsion 0.5
Vinyl acetate emulsion 0.5
Produce according to the technique comprised the steps:
(1), in high-speed mixing equipment, add water according to 50 times of said components (manmade inorganic fibre, carbon material, dispersion agent, caking agent) total mass, start high-speed stirring;
(2) add the Disodium sulfosuccinate of described proportioning, ether of cellulose, vinyl acetate emulsion and benzene emulsion, successively, stir 30 minutes;
(3) add the basalt fibre of described proportioning, artificial mullite fiber, gac, expanded graphite, successively, stir 30 minutes, obtained slurry;
(4), slurry obtained for step (3) is poured in mould, slough moisture by vacuum suck method, or dripped by placement nature and to anhydrate point, or slough moisture by compacting, shapingly obtain flaky material;
(5) flaky material, step (4) obtained is 130 DEG C of oven dry;
(6) flaky material, by step (5) obtained is 250 DEG C of expansions, and airsetting gel, obtains a kind of Carbon aerogel thermal insulation material.
With this Carbon aerogel thermal insulation material for sample, test above-mentioned several performances.
embodiment 4
A kind of Carbon aerogel thermal insulation material, main ingredient comprises: manmade inorganic fibre, carbon material, dispersion agent, caking agent etc., and wherein, each constituent mass is than as follows:
Mullite fiber 20
Sapphire whisker 80
Expanded graphite 70
Charcoal 10
Dodecylbenzene Soxylat A 25-7 1.5
Vinyl acetate emulsion 1.5
Produce according to the technique comprised the steps:
(1), in high-speed mixing equipment, add water according to 45 times of said components (manmade inorganic fibre, carbon material, dispersion agent, caking agent) total mass, start high-speed stirring;
(2) add dodecylbenzene Soxylat A 25-7, the vinyl acetate emulsion of described proportioning, successively, stir 33 minutes;
(3) add sapphire whisker, mullite fiber, charcoal, the expanded graphite of described proportioning, successively, stir 35 minutes, obtained slurry;
(4), slurry obtained for step (3) is poured in mould, slough moisture by vacuum suck method, or dripped by placement nature and to anhydrate point, or slough moisture by compacting, shapingly obtain flaky material;
(5) flaky material, step (4) obtained is 135 DEG C of oven dry;
(6) flaky material, by step (5) obtained is 245 DEG C of expansions, and airsetting gel, obtains a kind of Carbon aerogel thermal insulation material.
With this Carbon aerogel thermal insulation material for sample, test above-mentioned several performances.
embodiment 5
A kind of Carbon aerogel thermal insulation material, main ingredient comprises: manmade inorganic fibre, carbon material, dispersion agent, caking agent etc., and wherein, each constituent mass is than as follows:
Aluminum silicate fiber 85
Containing zirconium fiber 15
Expanded graphite 40
Graphite 10
Ether of cellulose 1.2
Organosilicon crylic acid latex 1.1
Produce according to the technique comprised the steps:
(1), in high-speed mixing equipment, add water according to 55 times of said components (manmade inorganic fibre, carbon material, dispersion agent, caking agent) total mass, start high-speed stirring;
(2) add ether of cellulose, the organosilicon crylic acid latex of described proportioning, successively, stir 35 minutes;
(3) add the aluminum silicate fiber of described proportioning, successively, containing zirconium fiber, graphite, expanded graphite, stir 38 minutes, obtained slurry;
(4), slurry obtained for step (3) is poured in mould, slough moisture by vacuum suck method, or dripped by placement nature and to anhydrate point, or slough moisture by compacting, shapingly obtain flaky material;
(5) flaky material, step (4) obtained is 145 DEG C of oven dry;
(6) flaky material, by step (5) obtained is 240 DEG C of expansions, and airsetting gel, obtains a kind of Carbon aerogel thermal insulation material.
With this Carbon aerogel thermal insulation material for sample, test above-mentioned several performances.
embodiment 6
A kind of Carbon aerogel thermal insulation material, main ingredient comprises: manmade inorganic fibre, carbon material, dispersion agent, caking agent etc., and wherein, each constituent mass is than as follows:
Aluminum silicate fiber 70
Rock mineral wool fibre 30
Expanded graphite 40
Carbon black 10
Triethanolamine oleate 0.3
Dodecylbenzene Soxylat A 25-7 1.0
Organosilicon crylic acid latex 0.8
Benzene emulsion 0.4
Produce according to the technique comprised the steps:
(1), in high-speed mixing equipment, add water according to 52 times of said components (manmade inorganic fibre, carbon material, dispersion agent, caking agent) total mass, start high-speed stirring;
(2) add the triethanolamine oleate of described proportioning, dodecylbenzene Soxylat A 25-7, benzene emulsion, organosilicon crylic acid latex, successively, stir 31 minutes;
(3) add the aluminum silicate fiber of described proportioning, rock mineral wool fibre, carbon black, expanded graphite, successively, stir 40 minutes, obtained slurry;
(4), slurry obtained for step (3) is poured in mould, slough moisture by vacuum suck method, or dripped by placement nature and to anhydrate point, or slough moisture by compacting, shapingly obtain flaky material;
(5) flaky material, step (4) obtained is 135 DEG C of oven dry;
(6) flaky material, by step (5) obtained is 248 DEG C of expansions, and airsetting gel, obtains a kind of Carbon aerogel thermal insulation material.
With this Carbon aerogel thermal insulation material for sample, test above-mentioned several performances.
embodiment 7
A kind of Carbon aerogel thermal insulation material, main ingredient comprises: manmade inorganic fibre, carbon material, dispersion agent, caking agent etc., and wherein, each constituent mass is than as follows:
Glass fibre 65
Rock mineral wool fibre 35
Expanded graphite 60
Triethanolamine oleate 1.3
Organosilicon crylic acid latex 1.1
Produce according to the technique comprised the steps:
(1), in high-speed mixing equipment, add water according to 40 times of said components (manmade inorganic fibre, carbon material, dispersion agent, caking agent) total mass, start high-speed stirring;
(2) add triethanolamine oleate, the organosilicon crylic acid latex of described proportioning, successively, stir 28 minutes;
(3) add the glass fibre of described proportioning, rock mineral wool fibre, expanded graphite, successively, stir 36 minutes, obtained slurry;
(4), slurry obtained for step (3) is poured in mould, slough moisture by vacuum suck method, or dripped by placement nature and to anhydrate point, or slough moisture by compacting, shapingly obtain flaky material;
(5) flaky material, step (4) obtained is 138 DEG C of oven dry;
(6) flaky material, by step (5) obtained is 242 DEG C of expansions, and airsetting gel, obtains a kind of Carbon aerogel thermal insulation material.
With this Carbon aerogel thermal insulation material for sample, test above-mentioned several performances.
embodiment 8
A kind of Carbon aerogel thermal insulation material, main ingredient comprises: manmade inorganic fibre, carbon material, dispersion agent, caking agent etc., and wherein, each constituent mass is than as follows:
Aluminum silicate fiber 60
Haplobasalt fiber 40
Expanded graphite 35
Graphite 5
Disodium sulfosuccinate 1.2
Polyacrylate dispersion 1.3
Produce according to the technique comprised the steps:
(1), in high-speed mixing equipment, add water according to 45 times of said components (manmade inorganic fibre, carbon material, dispersion agent, caking agent) total mass, start high-speed stirring;
(2) add Disodium sulfosuccinate, the polyacrylate dispersion of described proportioning, successively, stir 25 minutes;
(3) add the aluminum silicate fiber of described proportioning, haplobasalt fiber, expanded graphite, graphite, successively, stir 40 minutes, obtained slurry;
(4), slurry obtained for step (3) is poured in mould, slough moisture by vacuum suck method, or dripped by placement nature and to anhydrate point, or slough moisture by compacting, shapingly obtain flaky material;
(5) flaky material, step (4) obtained is 145 DEG C of oven dry;
(6) flaky material, by step (5) obtained is 230 DEG C of expansions, and airsetting gel, obtains a kind of Carbon aerogel thermal insulation material.
With this Carbon aerogel thermal insulation material for sample, test above-mentioned several performances.
embodiment 9
A kind of Carbon aerogel thermal insulation material, main ingredient comprises: manmade inorganic fibre, carbon material, dispersion agent, caking agent etc., and wherein, each constituent mass is than as follows:
Aluminum silicate fiber 80
Sapphire whisker 20
Expanded graphite 30
Ether of cellulose 1.4
Polyacrylate dispersion 1.2
Produce according to the technique comprised the steps:
(1), in high-speed mixing equipment, add water according to 60 times of said components (manmade inorganic fibre, carbon material, dispersion agent, caking agent) total mass, start high-speed stirring;
(2) add ether of cellulose, the polyacrylate dispersion of described proportioning, successively, stir 36 minutes;
(3) add aluminum silicate fiber, sapphire whisker, the expanded graphite of described proportioning, successively, stir 43 minutes, obtained slurry;
(4), slurry obtained for step (3) is poured in mould, slough moisture by vacuum suck method, or dripped by placement nature and to anhydrate point, or slough moisture by compacting, shapingly obtain flaky material;
(5) flaky material, step (4) obtained is 130 DEG C of oven dry;
(6) flaky material, by step (5) obtained is 270 DEG C of expansions, and airsetting gel, obtains a kind of Carbon aerogel thermal insulation material.
With this Carbon aerogel thermal insulation material for sample, test above-mentioned several performances.
embodiment 10
A kind of Carbon aerogel thermal insulation material, main ingredient comprises: manmade inorganic fibre, carbon material, dispersion agent, caking agent etc., and wherein, each constituent mass is than as follows:
Aluminum silicate fiber 85
Glass fibre 15
Expanded graphite 50
Gac 10
Coconut oil diethanol amide 1.5
Polyacrylate dispersion 1.4
Produce according to the technique comprised the steps:
(1), in high-speed mixing equipment, add water according to 30 times of said components (manmade inorganic fibre, carbon material, dispersion agent, caking agent) total mass, start high-speed stirring;
(2) add coconut oil diethanol amide, the polyacrylate dispersion of described proportioning, successively, stir 30 minutes;
(3) add the aluminum silicate fiber of described proportioning, glass aluminium fiber, expanded graphite, gac, successively, stir 35 minutes, obtained slurry;
(4), slurry obtained for step (3) is poured in mould, slough moisture by vacuum suck method, or dripped by placement nature and to anhydrate point, or slough moisture by compacting, shapingly obtain flaky material;
(5) flaky material, step (4) obtained is 120 DEG C of oven dry;
(6) flaky material, by step (5) obtained is 240 DEG C of expansions, and airsetting gel, obtains a kind of Carbon aerogel thermal insulation material.
With this Carbon aerogel thermal insulation material for sample, test above-mentioned several performances.
Each component raw material used in above-described embodiment 1-10, all buys gained from commercially available prod.
The each sample performance parameter test result of above-mentioned comparative example and embodiment 1-10 is as following table 1:
Table 1 comparative example and embodiment each sample performance parameter test result
(note: embodiment mean value refers to the various performance parameters mean value of embodiment 1-10.）
The present invention is by wet method slurrying, in the fibre dispersed for the carbon materials such as expanded graphite, shaping, dehydrate after, high-temperature expansion in a mold, airsetting gel process, full interfibrous space filled by carbon aerogels class material, make air in heat preserving and insulating material can not unrestricted flow, produce without convection current, and the carbon material of black prevents thermal radiation, thus significantly reduce the thermal conductivity of material.Compared with the general fibre felt of not aerogel-congtg material, thermal conductivity only has about 50% of general fibre felt, and embodiment 1 is not because add carbon material, and without aerogel weighting material, its thermal conductivity and common fibrefelt are more or less the same.Containing the fiber composite insulated lagging material of carbon aerogels compared with the fiber composite insulated lagging material of silicon containing gas gel, thermal conductivity is also only high by about 10% than the fiber composite insulated lagging material of silicon containing gas gel, but finished product price only has the 10-20% of the fiber composite insulated lagging material of silicon containing gas gel, so there is great using value and market potential.
Claims (6)
1. a Carbon aerogel thermal insulation material, is made up of manmade inorganic fibre, carbon material, dispersion agent and caking agent, wherein the ratio of quality and the number of copies of each component such as under:
Manmade inorganic fibre 100
Carbon material 20-200
Dispersion agent 1.0-2.0
Caking agent 1.0-2.0,
Described carbon material is expanded graphite, or expanded graphite and graphite, gac, charcoal, one or more mixture in carbon black;
Wherein, the step of described preparation method is:
(1) each component is weighed by formula;
(2) in high-speed mixing equipment, doubly water is added according to the 5-100 of formula constituent total mass in step (1);
(3) add caking agent and dispersion agent successively, stir 20-40min;
(4) add manmade inorganic fibre, the carbon material of described proportioning more successively, stir 20-50min, obtained slurry;
(5) slurry obtained for step (4) is poured in mould, slough moisture by vacuum suck method, or dripped by placement nature and to anhydrate point, or slough moisture by compacting, shapingly obtain flaky material;
(6) flaky material step (5) obtained is dried, temperature 100-150 DEG C;
(7) flaky material step (6) obtained is 200-300 DEG C of expansion, and airsetting gel, to obtain final product.
2. a kind of Carbon aerogel thermal insulation material according to claim 1, is characterized in that: the ratio of quality and the number of copies of above-mentioned each component such as under:
Manmade inorganic fibre 100
Carbon material 20-80
Dispersion agent 1.0-1.5
Caking agent 1.0-1.5.
3. a kind of Carbon aerogel thermal insulation material according to claim 1, is characterized in that: described manmade inorganic fibre be glass fibre, aluminum silicate fiber, rock mineral wool fibre, sapphire whisker, containing one or more mixture in zirconium fiber, artificial mullite fiber, haplobasalt fiber, boron fibre.
4. a kind of Carbon aerogel thermal insulation material according to claim 1, it is characterized in that: described dispersion agent is Disodium sulfosuccinate, triethanolamine oleate, coconut oil diethanol amide, dodecylbenzene Soxylat A 25-7, castor oil polyoxyethylene ether, one or more mixture in ether of cellulose.
5. a kind of Carbon aerogel thermal insulation material according to claim 1, is characterized in that: described caking agent is any one or a few mixture in polyacrylate dispersion, VAE emulsion, vinyl acetate emulsion, organosilicon crylic acid latex, benzene emulsion.
6. a kind of Carbon aerogel thermal insulation material according to any one of claim 1-5, it is characterized in that: normal temperature thermal conductivity is 0.02-0.03W/ (mK), at the temperature of 450-550 DEG C, its thermal conductivity is 0.07-0.085W/ (mK).
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| CN109082259A (en) * | 2018-07-30 | 2018-12-25 | 苏州市回天科技有限公司 | A kind of insulation adhesive and preparation method thereof |
| CN113562980A (en) * | 2020-04-29 | 2021-10-29 | 河北三楷深发科技股份有限公司 | Modified inorganic fiber and application thereof |
| CN111592376B (en) * | 2020-06-08 | 2021-06-08 | 北京化工大学 | Preparation method of composite aerogel functional material based on ferroferric oxide nanowire/graphene oxide interpenetrating structure |
| CN113511837B (en) * | 2021-07-27 | 2022-04-01 | 广州恩沣新材料科技有限公司 | Aerogel EVA composite heat-insulating material and preparation method thereof |
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| US8871821B2 (en) * | 2008-12-04 | 2014-10-28 | Tyco Electronics Corporation | Graphene and graphene oxide aerogels |
| CN102174973B (en) * | 2011-02-28 | 2012-12-26 | 成都亚恩科技实业有限公司 | Heat preservation and insulation felt material and preparation method thereof |
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