CN109354028A - A method of mixing silicon source copolymerization prepares flexible aeroge compound insulating material - Google Patents
A method of mixing silicon source copolymerization prepares flexible aeroge compound insulating material Download PDFInfo
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- CN109354028A CN109354028A CN201811344883.2A CN201811344883A CN109354028A CN 109354028 A CN109354028 A CN 109354028A CN 201811344883 A CN201811344883 A CN 201811344883A CN 109354028 A CN109354028 A CN 109354028A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
- C01B33/157—After-treatment of gels
- C01B33/158—Purification; Drying; Dehydrating
- C01B33/1585—Dehydration into aerogels
Abstract
A method of mixing silicon source copolymerization prepares flexible aeroge compound insulating material, it is related to the preparation method of aeroge compound insulating material.The preparation method that it will solve existing aerosil is cumbersome, the period is long, solvent displacement causes the technical problem more than waste liquid amount.This method: one, with positive esters of silicon acis and silicon source containing hydrophobic grouping silica solution is prepared；Two, after silica solution adjusts pH value, chemical seasoning controlling agent, microwave drying is added；Three, it is replaced with alcohols solvent；Four, it washs；Five, dry, obtain flexible aeroge compound insulating material.The material is flexible and 0~60 ° of energy is bent, no picking.It reaches 140~143 ° with hydrophobicity, contact angle, is 0.035~0.036W/ (m × k) in average 300 DEG C of its thermal coefficients, is 0.065~0.066W/ (m × k) in average 500 DEG C of its thermal coefficients.It can be used for field of thermal insulation.
Description
Technical field
The present invention relates to the preparation methods of aeroge compound insulating material, belong to heat insulating material technical field.
Background technique
Aeroge, English name are " aerogel ", mean " gel of flight ", are a kind of with nano-porous structure
New material shows superior performance in various fields, referred to as changes the magical material in the world, be with huge applications valence
The dual-use technology of value.Aeroge mainly has aerosil, alumina aerogels, zirconium oxide gas because of ingredient difference
Gel and carbon aerogels etc..Wherein aerosil is because having a nanoporous network structure, and porosity is up to 80%~
99.8% and hole typical sizes be 1~100nm, its room temperature thermal coefficient can have excellent down to 0.013w/ (mk)
Heat-insulating property in aerospace, petrochemical industry, electric power metallurgy, ship vehicle, precision instrument, refrigerator freezer, clothes tent, is built
Having broad application prospects for the fields such as energy conservation is built, is traditional insulation materials revolutionary character substitute products.
The preparation method of existing aerosil is usually with waterglass, silane etc. for silicon source, and acidity, which is added, to be had
After solvent is reacted, silica solution is prepared, using gel, aging, drying process, obtains aerosil material
Material.
Application No. is 201410270352.9 Chinese patents to disclose a kind of silica aerogel material and its preparation
Method, this method using waterglass as silicon source, by add not chloride ion-containing and fluorine ion containing sour organic solvent, generate sodium from
The precipitating of son, potassium ion and other ionizable metal salts removes precipitating using the mode of filter, acquisition high-purity silicasol, after pass through
Sol-gel, aging, acidification, modification, drying process, obtain silica aerogel material, and this method needs aging and modification
Etc. complex processes, it is cumbersome, and modifying agent is expensive, causes the cost of entire product excessively high.
Application No. is 201510347057.3 Chinese patents to disclose a kind of flexible aerosil of low cost
Preparation method, this method makees silicon source with three kinds of siloxanes with alkyl, waterglass, hydroxy silicon oil raw material mixing, with organic solvent
For dispersing agent, bronsted lowry acids and bases bronsted lowry is prepared through supercritical fluid drying technique with excellent respectively as hydrolysis, polycondensation catalyst
Good bulk silicon dioxide aeroge flexible.Resulting aerosil sample rate is low, and elasticity is good, and performance is stablized, and dredges
It is aqueous good.This method is dried using supercritical process, and equipment investment is prohibitively expensive.
Application No. is the Chinese patents of CN201710740613.2 to disclose a kind of flexible aerosil base phase change
The preparation method of composite material, this method introduce trimethylmethoxysilane as a kind of new presoma, by adjusting different silicon
The ratio of alkane presoma and solvent prepares flexible aerosil, suitable phase transformation core material is then selected, using Vaccum Permeating
Stain method obtains aerosil base phase change composite material.The present invention has the advantages that by the way that trimethyl methoxy silicon is added
Alkane changes the degree of cross linking inside aeroge, so that aeroge be made to have flexibility；Trimethylmethoxysilane, which is added, makes aeroge
Porosity increases, and pore size is adjustable；Prepared flexible silica aerogel material, can be compound due to its porosity
Phase transformation core material prepares phase change composite material；Prepared phase change composite material can effectively prevent leakage problem, and have machine
Tool performance is good.The solvent that the solvent replacement process of this method needs is more, and wash time is long, a large amount of waste liquid can be generated, at the later period
Energy consumption is high for reason.
Summary of the invention
That the present invention is to solve the preparation methods of existing aerosil is cumbersome, the period is long, solvent displacement
The technical problem more than waste liquid amount is caused, and a kind of side of the flexible aeroge compound insulating material of mixing silicon source copolymerization preparation is provided
Method.
The method that mixing silicon source copolymerization of the invention prepares flexible aeroge compound insulating material, sequentially includes the following steps:
One, be 1:(1~40 by the molar ratio of positive esters of silicon acis and the silicon source containing hydrophobic grouping), by positive esters of silicon acis with contain
The silicon source of hydrophobic grouping is uniformly mixed, and obtains mixing silicon source；Organic acid, surfactant and alcohols is added into mixing silicon source again
Solvent, wherein it is 1:(10 that the amount of positive esters of silicon acis and the molar ratio of organic acid, which is added,-3~10-2), total silicon source and surfactant
Mass ratio is 1:(0.005~0.08), the molar ratio of positive esters of silicon acis and alcohols solvent is 1:(8~30)；Under agitation plus
Heat reacts, and obtains silica solution；
Two, the pH for the silica solution that step 1 obtains is adjusted to 6.5~11.5 with alkali, chemical seasoning control is then added
The molar ratio of agent, positive esters of silicon acis and chemical seasoning controlling agent is 1:(0.1~0.8), after mixing, it is dry to be directly introduced to microwave
Solidify perhaps to be impregnated into reinforcing material to place into microwave drying oven in dry case and solidifies to obtain gel or plural gel material
Material；
Three, alcohols solvent is added into the gel or composite gel material that step 2 obtains, alcohols solvent is methanol, second
The one of which of alcohol, the tert-butyl alcohol, isopropanol, ethylene glycol, glycerine or tert-pentyl alcohol carries out intermittent-heating ultrasonic treatment；
Four, the gel or composite gel material that handle through step 3 are added in organic solvent, at 30~85 DEG C
Under the conditions of wash 6~24 hours, wash 2~8 times, complete displacement；
Five, the gel or composite gel material that handle through step 4 are dried, obtain the compound guarantor of flexible aeroge
Adiabator.
The present invention uses positive esters of silicon acis and the silicon source that contains hydrophobic grouping as mixing silicon source, the aeroge obtained after copolymerization
It can make to be locked in the hydrone inside gel originally so the wet gel of preparation has from hydrophobic function containing hydrophobic grouping
It is extruded because of the hydrophobic function of hydrophobic grouping, so not needing to carry out additional aging and modification procedure, greatly reduces
Cost, and it is added without modifying agent, while toxic chloride ion and fluorine ion will not be introduced, both environmental protection will not corrode equipment
Pipeline.
For the present invention due to the mixing silicon source of selection, the aerogel composite of preparation has certain flexibility, and has certain
Elasticity can carry out the bending of 0~60 ° of angle, and the phenomenon that do not lose powder, and it is raw in industry that this performance is conducive to the material
It produces and transportational process easily winds unreel in the middle, improve transport and application portability.
Flexible aeroge compound insulating material of the invention is 0.035~0.036W/ in average 300 DEG C of its thermal coefficients
(m × k) is 0.065~0.066W/ (m × k) in average 500 DEG C of its thermal coefficients.There is hydrophobicity simultaneously, contact angle reaches
To 140~143 °.
Method of the invention carries out solvent displacement washing using single organic solvent, reduces energy consumption, also saves equipment
The investment of expense；The production cycle is shorter simultaneously, and whole preparation process was completed at two days or so, compared with the prior art, preparation effect
Rate greatly improves；
Method stability of the invention is high, simple to operate simultaneously, cost is relatively low, can be mass produced, and realizes work
Industryization preparation.
Flexible aeroge compound insulating material of the invention can be used for field of thermal insulation.
Detailed description of the invention
Fig. 1 is the photo of flexible aeroge compound insulating material prepared by embodiment 1；
The compression test photo of flexible aeroge compound insulating material prepared by Fig. 2 embodiment 1；
Fig. 3 is the photo of flexible aeroge compound insulating material prepared by embodiment 2；
Specific embodiment
Specific embodiment 1: the mixing silicon source copolymerization of present embodiment prepares the side of flexible aeroge compound insulating material
Method sequentially includes the following steps:
One, be 1:(1~40 by the molar ratio of positive esters of silicon acis and the silicon source containing hydrophobic grouping), by positive esters of silicon acis with contain
The silicon source of hydrophobic grouping is uniformly mixed, and obtains mixing silicon source；Organic acid, surfactant and alcohols is added into mixing silicon source again
Solvent, wherein it is 1:(10 that the amount of positive esters of silicon acis and the molar ratio of organic acid, which is added,-3~10-2), total silicon source amount of addition and surface
The mass ratio of activating agent be 1:(0.005~0.08), be added positive esters of silicon acis amount and alcohols solvent molar ratio be 1:(8~
30)；Heating reacts under agitation, obtains silica solution；
Two, the pH for the silica solution that step 1 obtains is adjusted to 6.5~11.5 with alkali, chemical seasoning control is then added
Agent, the molar ratio of amount and chemical seasoning controlling agent that positive esters of silicon acis is added are 1:(0.1~0.8), after mixing, it is directly placed into
Solidify perhaps to be impregnated into reinforcing material to place into microwave drying oven into microwave drying oven and solidifies to obtain gel or multiple
Close gel rubber material；
Three, alcohols solvent is added into the gel or composite gel material that step 2 obtains, carries out intermittent-heating ultrasound
Processing；
Four, the gel or composite gel material that handle through step 3 are added in organic solvent, at 30~85 DEG C
Under the conditions of wash 6~24 hours, wash 2~8 times, complete displacement；
Five, the gel or composite gel material that handle through step 4 are dried, obtain the compound guarantor of flexible aeroge
Adiabator.
Specific embodiment 2: the present embodiment is different from the first embodiment in that positive silicic acid described in step 1
Ester is methyl orthosilicate, ethyl orthosilicate, positive isopropyl silicate or butyl silicate；It is other same as the specific embodiment one.
Specific embodiment 3: the present embodiment is different from the first and the second embodiment in that described in step 1 contain
The silicon source for having hydrophobic grouping is methyltrimethoxysilane, dimethyldimethoxysil,ne, trimethylmethoxysilane, methyl three
Ethoxysilane, vinyl trichlorosilane, positive silicic acid propyl ester, trimethylethoxysilane, hexamethyldisilazane, hexamethyl two
A kind of or in which several combination in siloxanes；It is other the same as one or two specific embodiments.
Specific embodiment 4: unlike one of present embodiment and specific embodiment one to three described in step 1
Organic acid be thionothiolic acid (RCOSH), sulfinic acid (RSOOH), sulfonic acid (R-SO3) or carboxylic acid (R-COOH) H；Other and specific reality
It is identical to apply one of mode one to three.
Specific embodiment 5: present embodiment carboxylic acid (R-COOH) described unlike specific embodiment four is
Formic acid, acetic acid, benzoic acid, citric acid, n-butyric acie or oxalic acid；It is other identical as one of specific embodiment four.
Specific embodiment 6: unlike one of present embodiment and specific embodiment one to five described in step 1
Surfactant be cetyl trimethylammonium bromide, hexadecyltrimethylammonium chloride, octadecyltrimethylammonium chloride
Or myristyl-lutidines ammonium bromide；It is other identical as one of specific embodiment one to five.
Specific embodiment 7: unlike one of present embodiment and specific embodiment one to six described in step 1
Alcohols solvent be methanol, ethyl alcohol, the tert-butyl alcohol, isopropanol, ethylene glycol, glycerine or tert-pentyl alcohol；Other and specific embodiment
One of one to six is identical.
Specific embodiment 8: described in step 1 unlike one of present embodiment and specific embodiment one to seven
Heating, is heated to 50~80 DEG C, the reaction time is 2~3 hours；It is other identical as one of specific embodiment one to seven.
Specific embodiment 9: unlike one of present embodiment and specific embodiment one to eight described in step 2
Chemical seasoning controlling agent be formamide, acetamide, n,N-Dimethylformamide (DMF), n,N-dimethylacetamide (DMA),
Glycerine, ethylene glycol or polyethylene glycol；It is other identical as one of specific embodiment one to eight.
Specific embodiment 10: unlike one of present embodiment and specific embodiment one to nine described in step 2
Microwave drying oven power be 200W~650W, curing time be 15~30 minutes；Other and specific embodiment one to nine
One of it is identical.
Specific embodiment 11: institute in step 3 unlike one of present embodiment and specific embodiment one to ten
The alcohols solvent stated is methanol, ethyl alcohol, the tert-butyl alcohol, isopropanol, ethylene glycol, glycerine or tert-pentyl alcohol；Other and specific embodiment party
One of formula one to ten is identical.
Specific embodiment 12: present embodiment from unlike specific embodiment one to one of 11 in step 3
The intermittent-heating ultrasonic treatment refers to that under conditions of temperature is 20~40 DEG C, every ultrasonic treatment is stood after 20~30 minutes
10~15 minutes；It is other identical as specific embodiment one to one of 11.
Wherein specific embodiment 13: present embodiment and step unlike specific embodiment one to one of 12
In five, drying mode is dry gradient increased temperature, freeze-drying or microwave drying；Other and specific embodiment one to one of 12
It is identical.
Specific embodiment 14: present embodiment and the microwave unlike specific embodiment one to one of 13
Dry to refer to microwave negative pressure drying, vacuum degree is -0.01~-0.05MPa, and the power of microwave is 10KW~60KW；；Other and tool
Body embodiment one to one of 13 is identical.
Specific embodiment 15: present embodiment from unlike specific embodiment one to one of 14 in step 4
The organic solvent is methanol, ethyl alcohol, the tert-butyl alcohol, isopropanol, ethylene glycol, glycerine or tert-pentyl alcohol；Other and specific implementation
Mode one to one of 14 is identical.
Beneficial effects of the present invention are verified with the following examples:
Embodiment 1: the method that the mixing silicon source copolymerization of the present embodiment prepares flexible aeroge compound insulating material, by following
Step carries out:
One, 160.3g butyl silicate is uniformly mixed to the round bottom for being added to 2L with 74.1g dimethyl diethoxysilane
In four-necked bottle, mixing silicon source is obtained；The 1482.4g tert-butyl alcohol is added into mixing silicon source again, 2.5 milliliters of concentration are added while stirring
For the acetic acid and 1.8g cetyl trimethylammonium bromide of 0.2mol/L, it is heated to 55 DEG C of reaction 2h under agitation, obtains
Silica solution；The silica solution pH value that step 1 obtains is 1.6；
Two, the pH of the silica solution obtained with the ammonium hydroxide alkali step 1 of 1mol/L is adjusted to 9.5, and the N, N- of 8.7g is then added
Dimethyl acetamide (DMA) is directly introduced in microwave drying oven after mixing, solid in the condition that microwave power is 300W
Change 10 minutes, obtains wet gel；
Three, the tert-butyl alcohol is added into the wet gel that step 2 obtains, carries out intermittent-heating ultrasonic treatment, wherein intermittent-heating
Ultrasonic treatment refers to that every ultrasonic treatment after twenty minutes, stands 10 minutes, coprocessing 3h under conditions of temperature is 30 DEG C；
Four, the wet gel handled through step 3 is added in the tert-butyl alcohol, washs 8 hours under conditions of 80 DEG C, washes altogether
It washs 4 times, completes displacement；
Five, the gel handled through step 4 is put into vacuum oven, the heat preservation drying 3 under conditions of temperature is 60 DEG C
Hour, it then heats to 80 DEG C of heat preservations and dries 3 hours, then be warming up to 90 DEG C of heat preservations and dry 3 hours, be finally warming up to 100 DEG C of guarantors
Temperature drying 3 hours, obtains flexible aeroge compound insulating material.
The photo for the flexible aeroge compound insulating material that the present embodiment obtains is as shown in Figure 1, by manufactured in the present embodiment
After flexible aeroge compound insulating material is torn, also without the phenomenon that losing powder.
The compression test photo of the flexible aeroge compound insulating material that the present embodiment obtains is as shown in Fig. 2, can be with from Fig. 2
Find out, which has certain elasticity, after being compressed into can fast its original state of quick-recovery, recovery rate 100%.The material can also
It is bent, allows to arbitrary change shape.
The flexible aeroge compound insulating material that the present embodiment obtains has hydrophobic performance, and contact angle reaches 144 °, rolls
7 ° of angle can improve service life so that the thermal insulation material has hydrophobic humidity resistance.
The flexible aeroge compound insulating material density that the present embodiment obtains is 0.083g/cm-3, this thermal insulation material density
It is low, it is very light.
The flexible aeroge compound insulating material that the present embodiment obtains has good heat insulating effect, average 300
DEG C its thermal coefficient is 0.035W/ (m × k), is 0.065W/ (m × k) in average 500 DEG C of its thermal coefficients.
The present embodiment preparation method is easy to operate, the period is short, displacement solvent usage is few.
Embodiment 2: the method that the mixing silicon source copolymerization of the present embodiment prepares flexible aeroge compound insulating material, by following
Step carries out:
One, 132.2g positive silicic acid propyl ester and 110.2g methyl tripropoxy silane mixture are even added to the round bottom four of 2L
In neck bottle, mixing silicon source is obtained；1201.2g isopropanol is added into mixing silicon source again, 1 milliliter of concentration is added while stirring is
The acetic acid and 2.1g octadecyltrimethylammonium chloride of 0.5mol/L is heated to 575 DEG C of reaction 3h under agitation, obtains silicon
Colloidal sol；The silica solution pH value that step 1 obtains is 1.9；
Two, the pH for the silica solution that step 1 obtains is adjusted to 8.5 with the ammonium hydroxide of 3mol/L, the N, N- of 7.3g is then added
Dimethylformamide is poured into the container for being pre-placed organic fiber cloth after mixing, then places into container
In microwave drying oven, solidifies 15 minutes in the condition that microwave power is 200W, obtain composite gel material；
Three, isopropanol is added into the composite gel material that step 2 obtains, carries out intermittent-heating ultrasonic treatment, among it
Heating ultrasonic treatment of having a rest refers to that every ultrasonic treatment after twenty minutes, stands 10 minutes, coprocessing 3h under conditions of temperature is 35 DEG C；
Four, the composite gel material handled through step 3 is added in isopropanol, it is small that 10 is washed under conditions of 65 DEG C
When, it washs 2 times altogether, completes displacement；
Five, the gel composite gel material handled through step 4 is put into vacuum oven, the item for being 50 DEG C in temperature
Heat preservation drying 3 hours under part, then heat to 70 DEG C of heat preservations and dry 3 hours, then are warming up to 100 DEG C of heat preservations drying 3 hours, finally
It is warming up to 120 DEG C of heat preservations to dry 3 hours, obtains flexible aeroge compound insulating material.
The photo for the flexible aeroge compound insulating material that the present embodiment obtains is as shown in figure 3, from figure 3, it can be seen that originally
After the flexible aeroge compound insulating material cutting of embodiment preparation, the phenomenon that picking, while there is certain elasticity, energy
Enough it is bent.
The flexible aeroge compound insulating material that the present embodiment obtains has good heat insulating effect, average 300
DEG C its thermal coefficient is 0.036W/ (m × k), is 0.066W/ (m × k) in average 500 DEG C of its thermal coefficients, and service life
Up to 20 years or more, heat-resisting and insulation effect will not change.There is hydrophobicity simultaneously, contact angle reaches 143 °.It can
The water absorption rate of the shortcomings that overcoming Conventional insulation, such as rock wool, rock wool is big, and moisture is easy to be accumulated in rock wool board, meeting for a long time
Increase heat preservation layer weight, insulating layer is caused to fall off, repair rate is high, and service life is low；With flexible aeroge manufactured in the present embodiment
Compound insulating material is good update material.
The flexible aeroge compound insulating material that the present embodiment obtains has extraordinary corrosion resistance, and itself will not be rotten
Carbon steel and stainless steel are lost, it is safe and reliable；This aeroge compound insulating material quality is light, has flexibility, is easy cutting, sewing
To adapt to various pipelines of different shapes, insulation of equipment.
The present embodiment preparation method is easy to operate, the period is short, displacement solvent usage is few.
Claims (10)
1. a kind of method that the copolymerization of mixing silicon source prepares flexible aeroge compound insulating material, it is characterised in that this method is by following
Step carries out:
One, be 1:(1~40 by the molar ratio of positive esters of silicon acis and the silicon source containing hydrophobic grouping), by positive esters of silicon acis with contain it is hydrophobic
The silicon source of group is uniformly mixed, and obtains mixing silicon source；It is molten that organic acid, surfactant and alcohols is added into mixing silicon source again
Agent, wherein it is 1:(10 that the amount of positive esters of silicon acis and the molar ratio of organic acid, which is added,-3~10-2), total silicon source amount of addition and surface are living
Property agent mass ratio be 1:(0.005~0.08), be added positive esters of silicon acis amount and alcohols solvent molar ratio be 1:(8~30)；
Heating reacts under agitation, obtains silica solution；
Two, the pH for the silica solution that step 1 obtains is adjusted to 6.5~11.5 with alkali, chemical seasoning controlling agent is then added, adds
The molar ratio of the amount and chemical seasoning controlling agent that enter positive esters of silicon acis is 1:(0.1~0.8), after mixing, it is directly introduced to micro-
Solidify perhaps to be impregnated into reinforcing material to place into microwave drying oven in wave drying box and solidifies to obtain gel or compound solidifying
Glue material；
Three, alcohols solvent is added into the gel or composite gel material that step 2 obtains, carries out intermittent-heating ultrasonic treatment；
Four, the gel or composite gel material that handle through step 3 are added in organic solvent, in 30~85 DEG C of condition
Lower washing 6~24 hours, is washed 2~8 times, completes displacement；
Five, the gel or composite gel material that handle through step 4 are dried, obtain flexible aeroge complex heat-preservation material
Material.
2. the method that a kind of mixing silicon source copolymerization according to claim 1 prepares flexible aeroge compound insulating material,
It is characterized in that positive esters of silicon acis described in step 1 is methyl orthosilicate, ethyl orthosilicate, positive isopropyl silicate or positive silicic acid fourth
Ester.
3. the method that a kind of mixing silicon source copolymerization according to claim 1 or 2 prepares flexible aeroge compound insulating material,
It is characterized in that the silicon source described in step 1 containing hydrophobic grouping is methyltrimethoxysilane, dimethylformamide dimethyl oxygroup silicon
Alkane, trimethylmethoxysilane, methyltriethoxysilane, vinyl trichlorosilane, positive silicic acid propyl ester, front three base oxethyl silicon
Alkane, hexamethyldisilazane, a kind of or in which several combination in hexamethyldisiloxane.
4. the method that a kind of mixing silicon source copolymerization according to claim 1 or 2 prepares flexible aeroge compound insulating material,
It is characterized in that organic acid described in step 1 is thionothiolic acid, sulfinic acid, sulfonic acid or carboxylic acid.
5. the method that a kind of mixing silicon source copolymerization according to claim 4 prepares flexible aeroge compound insulating material,
It is characterized in that the carboxylic acid is formic acid, acetic acid, benzoic acid, citric acid, n-butyric acie or oxalic acid.
6. the method that a kind of mixing silicon source copolymerization according to claim 1 or 2 prepares flexible aeroge compound insulating material,
It is characterized in that surfactant described in step 1 is cetyl trimethylammonium bromide, cetyl trimethyl chlorination
Ammonium, octadecyltrimethylammonium chloride or myristyl-lutidines ammonium bromide.
7. the method that a kind of mixing silicon source copolymerization according to claim 1 or 2 prepares flexible aeroge compound insulating material,
It is characterized in that alcohols solvent described in step 1 is methanol, ethyl alcohol, the tert-butyl alcohol, isopropanol, ethylene glycol, glycerine or uncle penta
Alcohol.
8. the method that a kind of mixing silicon source copolymerization according to claim 1 or 2 prepares flexible aeroge compound insulating material,
It is characterized in that heating described in step 1, is heated to 50~80 DEG C, the reaction time is 2~3 hours.
9. the method that a kind of mixing silicon source copolymerization according to claim 1 or 2 prepares flexible aeroge compound insulating material,
It is characterized in that chemical seasoning controlling agent described in step 2 is formamide, acetamide, n,N-Dimethylformamide, N, N- bis-
Methylacetamide, glycerine, ethylene glycol or polyethylene glycol.
10. the side that a kind of mixing silicon source copolymerization according to claim 1 or 2 prepares flexible aeroge compound insulating material
Method, it is characterised in that the power of microwave drying oven described in step 2 is 200W~650W, and curing time is 15~30 minutes.
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Cited By (5)
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| CN111154036A (en) * | 2020-01-20 | 2020-05-15 | 南京工业大学 | Preparation method of ethylene-silane copolymerized composite aerogel |
| CN114534693A (en) * | 2022-02-18 | 2022-05-27 | 南京工业大学 | Preparation method of transparent hydrophobic spherical silica aerogel adsorbent |
| CN114560467A (en) * | 2022-04-02 | 2022-05-31 | 西南大学 | Flexible silicon dioxide aerogel and preparation method thereof |
| CN115043408A (en) * | 2022-07-04 | 2022-09-13 | 巩义市泛锐熠辉复合材料有限公司 | Flexible silicon dioxide aerogel, aerogel felt and preparation method thereof |
| CN114560467B (en) * | 2022-04-02 | 2024-04-30 | 西南大学 | Flexible silicon dioxide aerogel and preparation method thereof |
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| CN114560467B (en) * | 2022-04-02 | 2024-04-30 | 西南大学 | Flexible silicon dioxide aerogel and preparation method thereof |
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