CN107651692A - A kind of efficient preparation technology of aerosil - Google Patents
A kind of efficient preparation technology of aerosil Download PDFInfo
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- CN107651692A CN107651692A CN201710800989.8A CN201710800989A CN107651692A CN 107651692 A CN107651692 A CN 107651692A CN 201710800989 A CN201710800989 A CN 201710800989A CN 107651692 A CN107651692 A CN 107651692A
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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
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
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- Inorganic Chemistry (AREA)
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Abstract
The invention discloses a kind of efficient preparation technology of aerosil, comprise the following steps：（1）The preparation of wet gel；（2）Gel process；（3）Removing sodium process；（4）Solvent is replaced；（5）N-hexane is replaced；（6）It is silica modified；（7）Cleaning；（8）Drying.The present invention prepares SiO using waterglass as silicon source, without ion exchange2Aeroge, reduce many production processes and raw material, so as to reduce production cost, can effectively reduce the product price of aerosil, cost performance is more rational, has higher environmental protection, society and economic value.
Description
Technical field
The present invention relates to a kind of aeroge technology of preparing, the efficient preparation technology of specifically a kind of aerosil.
Background technology
Aeroge, also known as xerogel.When gel sloughs most of solvent, make content liquid in gel fewer than solids content
Much, or in the space net structure of gel the medium being full of is gas, and appearance is in solid-like, and this is xerogel, also referred to as
Aeroge.Aeroge also has the property of gel, that is, has expansion, thixotropic transformation, a synaeresis.Aeroge is density very little
One of solid, density are 3 kilograms every cubic metre, and general common aeroge is silica aerogel.
In recent years, with the rapid development of economy, increasingly paying attention to energy-conserving and environment-protective.Aerosil is as a kind of
Best insulation material in the world at present, is equally increasingly paid attention to, but its production cost is too high, cost performance is paid no attention to very much by people
Think, allow people to hang back.Therefore, the present invention provides a kind of efficient preparation technology of aerosil, and it is with Na2SiO3
It is silicon source to be commonly called as sodium silicate, without to Na2SiO3Any processing is done, DIRECT GEL produces aerosil；It is produced into
This reduces about 30% than the product cost that current technology is produced, and reduces many environmental pollutions in process of production.
The content of the invention
It is an object of the invention to provide a kind of efficient preparation technology of aerosil, to solve above-mentioned background skill
The problem of being proposed in art.
To achieve the above object, the present invention provides following technical scheme：
A kind of efficient preparation technology of aerosil, comprises the following steps：
（1）The preparation of wet gel：
1. taking sodium metasilicate to be contained in tank, then measure neutral water and add tank, stirring is abundant, obtains water glass solution, waterglass is molten
The modulus 3 of liquid, concentration are 37 °；
2. to the modulation of solidifying agent：Hydrochloric acid is weighed, is modulated into 4-5mol/L watery hydrochloric acid, is produced to solidifying agent, it is standby；
（2）Gel process：Instilled what 2. step prepared to solidifying agent in 1. water glass solution that step stirs, side is added dropwise
While it is sufficiently stirred, to the dosage of solidifying agent：7-7.5ml dilute hydrochloric acid solution is added per 100ml water glass solutions, adjusts in-tank mixing
For the pH value of thing to 10, solution starts gel after the time of one end, then 50-70 DEG C of aging 2-3 hour of constant temperature in tank, obtains wet gel
Block；
（3）Removing sodium process：After the good wet gel block of upper step aging is smashed, cleaned one time with deionized water, then will first
Wet gel is contained in the appearance ware of 5-15 times of wet gel volume, adds neutral water stirring, changes water once per 4-7 hours, so immersion
About 36 hours, the pH value of water after immersion every time is checked, when pH value is to 6 or so, you can carry out in next step；
（4）Solvent is replaced：Wet gel obtained by upper step is drained the water, then wet gel is contained in the appearance ware of 5-15 times of wet gel volume
In, add ethanol and be slowly stirred, soaked at 50-70 DEG C of constant temperature, ethanol is changed once per 4-6 hours, using its reclaimed water of ethanol replacement
Point, the number of degrees of ethanol after immersion every time are checked, reach more than 93 degree until measuring and holding the ethanol number of degrees in ware, you can carry out next
Step；
（5）N-hexane is replaced：After upper step is drained with the gel after ethanol replacement, the n-hexane of 1.5-3 times of gel volume is added, will
Gel soaks 2-4 hours in n-hexane, until being impregnated with；
（6）It is silica modified：Using trim,ethylchlorosilane as modifying agent, the gel after being replaced to n-hexane is modified modification；
（7）Cleaning：Gel after draining is put into n-hexane and soaked, the addition of n-hexane there was not gel, was changed per 2-4 hours
N-hexane once, checks the pH value of the n-hexane after immersion every time, until the pH value of n-hexane is in neutrality, then discharge opeing and will be solidifying
Glue drains；
（8）Drying：Half-dried gel will be dripped to take out, drying oven drying is moved to, 70-90 DEG C of drying temperature, got product after drying.
As the further scheme of the present invention：1. step is taken in the tank that sodium metasilicate is contained in more than 4-8 times of sodium metasilicate volume, so
The neutral water for measuring 4 times of volumes of sodium metasilicate afterwards adds tank.
As the further scheme of the present invention：Step is 2. to the modulation of solidifying agent：Hydrochloric acid is weighed, is modulated into the dilute of 4.8mol/L
Hydrochloric acid, produce to solidifying agent, it is standby.
As the further scheme of the present invention：Step（2）Gel process：2. extremely solidifying agent that step is prepared instills step
1. in the water glass solution to stir, it is sufficiently stirred when being added dropwise, to the dosage of solidifying agent：Added per 100ml water glass solutions
7.2ml dilute hydrochloric acid solution, pH value to 10, the about 10 minutes solution of regulation in-tank mixing thing start gel, then constant temperature in tank
60 DEG C of agings 2.5 hours, obtain wet gel block.
As the further scheme of the present invention：Step（3）Removing sodium process：The good wet gel block of upper step aging is smashed
Afterwards, cleaned one time with deionized water, be then contained in wet gel in the appearance ware of 10 times of wet gel volumes first, added neutral water and delay
Slowly stirring is continuously stirred or is spaced, change water once within every 6 hours, so immersion about 36 hours, check the pH value of water after immersion every time,
When pH value is to 6 or so, you can carry out in next step.
As the further scheme of the present invention：Step（4）Solvent is replaced：Wet gel obtained by upper step is drained the water, then will
Wet gel is contained in the appearance ware of 10 times of wet gel volumes, is added ethanol and is slowly stirred, is soaked at 60 DEG C of constant temperature, change second within every 6 hours
Alcohol once, using ethanol replacement wherein moisture, checks the number of degrees of ethanol after immersion every time, is reached until measuring and holding the ethanol number of degrees in ware
To more than 93 degree, you can carry out in next step.
As the further scheme of the present invention：Step（5）N-hexane is replaced：Upper step is drained with the gel after ethanol replacement
Afterwards, the n-hexane of 2 times of gel volume is added, gel is soaked 3 hours in n-hexane, until being impregnated with.
As the further scheme of the present invention：Step（6）Concretely comprise the following steps：Gel after n-hexane is replaced is dripped to half-dried
Afterwards, trim,ethylchlorosilane and hexane solution are added, soaks 2-5 hours, therebetween constantly arranges the HCL held under the sedimentation of ware bottom
Go out, and add trim,ethylchlorosilane and hexane solution；After the completion of immersion, solution is discharged and drains gel.
As the further scheme of the present invention：Step（7）Cleaning：Gel after draining is put into n-hexane and soaked, just
The addition of hexane there was not gel, changed n-hexane once within every 3 hours, the pH value of the n-hexane after immersion every time was checked, until just
Then the pH value of hexane discharge opeing and drains gel in neutrality.
As the further scheme of the present invention：Step（8）Drying：Half-dried gel will be dripped to take out, move to drying oven drying,
80 DEG C of drying temperature, gets product after drying.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention prepares SiO using waterglass as silicon source, without ion exchange2Aeroge, reduce many production processes and original
Material, so as to reduce production cost, can effectively reduce the product price of aerosil, cost performance is more rational, has
Higher environmental protection, society and economic value.
Embodiment
The technical scheme of this patent is described in more detail with reference to embodiment.
Embodiment 1
A kind of efficient preparation technology of aerosil, specifically includes following steps：
（1）The preparation of wet gel：
1. taking in the tank that refined sodium metasilicate is contained in more than 4 times of sodium metasilicate volumes, the neutral water of 4 times of volumes of sodium metasilicate is then measured
Tank is added, stirring is abundant, obtains water glass solution, the modulus 3 or so of water glass solution, concentration is 37 °；
2. to the modulation of solidifying agent：Hydrochloric acid is weighed, is modulated into 4mol/L watery hydrochloric acid, is produced to solidifying agent, it is standby；
（2）Gel process：Instilled what 2. step prepared to solidifying agent in 1. water glass solution that step stirs, side is added dropwise
While it is sufficiently stirred, to the dosage of solidifying agent：7ml dilute hydrochloric acid solution is added per 100ml water glass solutions, regulation in-tank mixing thing
PH value to 10, about 10 minutes solution starts gel, then 50 DEG C of constant temperature aging 2 hours in tank, obtains wet gel block；
（3）Removing sodium process：After the good wet gel block of upper step aging is smashed, cleaned one time with deionized water, then will first
Wet gel is contained in the appearance ware of 5 times of wet gel volumes, is added neutral water and is slowly continuously stirred or be spaced stirring, changes water within every 4 hours
Once, so soak about 36 hours, the pH value of water after immersion every time is checked, when pH value is to 6 or so, you can carry out next step；
（4）Solvent is replaced：Wet gel obtained by upper step is drained the water, is then contained in wet gel in the appearance ware of 5 times of wet gel volumes,
Add ethanol to be slowly stirred, soaked at 50 DEG C of constant temperature, change ethanol once within every 4 hours, using ethanol replacement wherein moisture, check every
The number of degrees of ethanol after secondary immersion, reach more than 93 degree until measuring and holding the ethanol number of degrees in ware, you can carry out in next step；
（5）N-hexane is replaced：After upper step is drained with the gel after ethanol replacement, the n-hexane of 1.5 times of gel volume is added, will be solidifying
Glue soaks 2 hours in n-hexane, until being impregnated with；
（6）It is silica modified：Using trim,ethylchlorosilane as modifying agent, the gel after being replaced to n-hexane is modified modification,
Concretely comprise the following steps：
Gel after n-hexane is replaced is dripped to after half-dried, adds trim,ethylchlorosilane and hexane solution, is soaked 2 hours, its
Between will constantly hold the lower HCL discharges of ware bottom sedimentation, and add trim,ethylchlorosilane and hexane solution；, will after the completion of immersion
Solution is discharged and drains gel, into next step；
（7）Cleaning：Gel after draining is put into n-hexane and soaked, the addition of n-hexane there was not gel, changed just within every 2 hours
Hexane once, checks the pH value of the n-hexane after immersion every time, until the pH value of n-hexane is in neutrality, then discharge opeing and by gel
Drain；
（8）Drying：Half-dried gel will be dripped to take out, drying oven drying is moved to, 70 DEG C of drying temperature, got product after drying.
Embodiment 2
A kind of efficient preparation technology of aerosil, specifically includes following steps：
（1）The preparation of wet gel：
1. taking in the tank that refined sodium metasilicate is contained in more than 8 times of sodium metasilicate volumes, the neutral water of 4 times of volumes of sodium metasilicate is then measured
Tank is added, stirring is abundant, obtains water glass solution, the modulus 3 or so of water glass solution, concentration is 37 °；
2. to the modulation of solidifying agent：Hydrochloric acid is weighed, is modulated into 5mol/L watery hydrochloric acid, is produced to solidifying agent, it is standby；
（2）Gel process：Instilled what 2. step prepared to solidifying agent in 1. water glass solution that step stirs, side is added dropwise
While it is sufficiently stirred, to the dosage of solidifying agent：7.5ml dilute hydrochloric acid solution is added per 100ml water glass solutions, adjusts in-tank mixing thing
PH value to 10, about 10 minutes solution start gel, then 70 DEG C of constant temperature aging 3 hours in tank, obtain wet gel block；
（3）Removing sodium process：After the good wet gel block of upper step aging is smashed, cleaned one time with deionized water, then will first
Wet gel is contained in the appearance ware of 15 times of wet gel volumes, is added neutral water and is slowly continuously stirred or be spaced stirring, changes water within every 7 hours
Once, so soak about 36 hours, the pH value of water after immersion every time is checked, when pH value is to 6 or so, you can carry out next step；
（4）Solvent is replaced：Wet gel obtained by upper step is drained the water, then wet gel is contained in the appearance ware of 15 times of wet gel volumes
In, add ethanol and be slowly stirred, soaked at 70 DEG C of constant temperature, change ethanol once within every 6 hours, using ethanol replacement wherein moisture, inspection
The number of degrees of ethanol after soaking every time are looked into, reach more than 93 degree until measuring and holding the ethanol number of degrees in ware, you can carry out in next step；
（5）N-hexane is replaced：After upper step is drained with the gel after ethanol replacement, the n-hexane of 3 times of gel volume is added, by gel
Soaked 4 hours in n-hexane, until being impregnated with；
（6）It is silica modified：Using trim,ethylchlorosilane as modifying agent, the gel after being replaced to n-hexane is modified modification,
Concretely comprise the following steps：
Gel after n-hexane is replaced is dripped to after half-dried, adds trim,ethylchlorosilane and hexane solution, is soaked 5 hours, its
Between will constantly hold the lower HCL discharges of ware bottom sedimentation, and add trim,ethylchlorosilane and hexane solution；, will after the completion of immersion
Solution is discharged and drains gel, into next step；
（7）Cleaning：Gel after draining is put into n-hexane and soaked, the addition of n-hexane there was not gel, changed just within every 4 hours
Hexane once, checks the pH value of the n-hexane after immersion every time, until the pH value of n-hexane is in neutrality, then discharge opeing and by gel
Drain；
（8）Drying：Half-dried gel will be dripped to take out, drying oven drying is moved to, 90 DEG C of drying temperature, got product after drying.
Embodiment 3
A kind of efficient preparation technology of aerosil, specifically includes following steps：
（1）The preparation of wet gel：
1. taking in the tank that refined sodium metasilicate is contained in more than 5 times of sodium metasilicate volumes, the neutral water of 4 times of volumes of sodium metasilicate is then measured
Tank is added, stirring is abundant, obtains water glass solution, the modulus 3 or so of water glass solution, concentration is 37 °；
2. to the modulation of solidifying agent：Hydrochloric acid is weighed, is modulated into 4.8mol/L watery hydrochloric acid, is produced to solidifying agent, it is standby；
（2）Gel process：Instilled what 2. step prepared to solidifying agent in 1. water glass solution that step stirs, side is added dropwise
While it is sufficiently stirred, to the dosage of solidifying agent：7.2ml dilute hydrochloric acid solution is added per 100ml water glass solutions, adjusts in-tank mixing thing
PH value to 10, about 10 minutes solution start gel, then 60 DEG C of constant temperature aging 2.5 hours in tank, obtain wet gel block；
（3）Removing sodium process：After the good wet gel block of upper step aging is smashed, cleaned one time with deionized water, then will first
Wet gel is contained in the appearance ware of 10 times of wet gel volumes, is added neutral water and is slowly continuously stirred or be spaced stirring, changes water within every 6 hours
Once, so soak about 36 hours, the pH value of water after immersion every time is checked, when pH value is to 6 or so, you can carry out next step；
（4）Solvent is replaced：Wet gel obtained by upper step is drained the water, then wet gel is contained in the appearance ware of 10 times of wet gel volumes
In, add ethanol and be slowly stirred, soaked at 60 DEG C of constant temperature, change ethanol once within every 6 hours, using ethanol replacement wherein moisture, inspection
The number of degrees of ethanol after soaking every time are looked into, reach more than 93 degree until measuring and holding the ethanol number of degrees in ware, you can carry out in next step；
（5）N-hexane is replaced：After upper step is drained with the gel after ethanol replacement, the n-hexane of 2 times of gel volume is added, by gel
Soaked 3 hours in n-hexane, until being impregnated with；
（6）It is silica modified：Using trim,ethylchlorosilane as modifying agent, the gel after being replaced to n-hexane is modified modification,
Concretely comprise the following steps：
Gel after n-hexane is replaced is dripped to after half-dried, adds trim,ethylchlorosilane and hexane solution, is soaked 3 hours, its
Between will constantly hold the lower HCL discharges of ware bottom sedimentation, and add trim,ethylchlorosilane and hexane solution；, will after the completion of immersion
Solution is discharged and drains gel, into next step；
（7）Cleaning：Gel after draining is put into n-hexane and soaked, the addition of n-hexane there was not gel, changed just within every 3 hours
Hexane once, checks the pH value of the n-hexane after immersion every time, until the pH value of n-hexane is in neutrality, then discharge opeing and by gel
Drain；
（8）Drying：Half-dried gel will be dripped to take out, drying oven drying is moved to, 80 DEG C of drying temperature, got product after drying.
The SiO that the present invention is prepared using waterglass as silicon source, without ion exchange2Aeroge is mesoporous nano structure, hole
Footpath narrowly distributing, most of between 8-12nm, particle size is less than 100nm, and specific surface area is about 600-640m2In/g range；
The technical indicator of the more conventional method production of aerosil prepared by the present invention is equally matched, reduces many production processes
And raw material, so as to reduce production cost, the product price of aerosil can be effectively reduced, cost performance is more rational,
With higher environmental protection, society and economic value.
The better embodiment of this patent is explained in detail above, but this patent is not limited to above-mentioned embodiment party
Formula, can also be on the premise of this patent objective not be departed from one skilled in the relevant art's possessed knowledge
Make a variety of changes.
Claims (10)
1. the efficient preparation technology of a kind of aerosil, it is characterised in that comprise the following steps：
（1）The preparation of wet gel：
1. taking sodium metasilicate to be contained in tank, then measure neutral water and add tank, stirring is abundant, obtains water glass solution, waterglass is molten
The modulus 3 of liquid, concentration are 37 °；
2. to the modulation of solidifying agent：Hydrochloric acid is weighed, is modulated into 4-5mol/L watery hydrochloric acid, is produced to solidifying agent, it is standby；
（2）Gel process：Instilled what 2. step prepared to solidifying agent in 1. water glass solution that step stirs, side is added dropwise
While it is sufficiently stirred, to the dosage of solidifying agent：7-7.5ml dilute hydrochloric acid solution is added per 100ml water glass solutions, adjusts in-tank mixing
For the pH value of thing to 10, solution starts gel after the time of one end, then 50-70 DEG C of aging 2-3 hour of constant temperature in tank, obtains wet gel
Block；
（3）Removing sodium process：After the good wet gel block of upper step aging is smashed, cleaned one time with deionized water, then will first
Wet gel is contained in the appearance ware of 5-15 times of wet gel volume, adds neutral water stirring, changes water once per 4-7 hours, so immersion
About 36 hours, the pH value of water after immersion every time is checked, when pH value is to 6 or so, you can carry out in next step；
（4）Solvent is replaced：Wet gel obtained by upper step is drained the water, then wet gel is contained in the appearance ware of 5-15 times of wet gel volume
In, add ethanol and be slowly stirred, soaked at 50-70 DEG C of constant temperature, ethanol is changed once per 4-6 hours, using its reclaimed water of ethanol replacement
Point, the number of degrees of ethanol after immersion every time are checked, reach more than 93 degree until measuring and holding the ethanol number of degrees in ware, you can carry out next
Step；
（5）N-hexane is replaced：After upper step is drained with the gel after ethanol replacement, the n-hexane of 1.5-3 times of gel volume is added, will
Gel soaks 2-4 hours in n-hexane, until being impregnated with；
（6）It is silica modified：Using trim,ethylchlorosilane as modifying agent, the gel after being replaced to n-hexane is modified modification；
（7）Cleaning：Gel after draining is put into n-hexane and soaked, the addition of n-hexane there was not gel, was changed per 2-4 hours
N-hexane once, checks the pH value of the n-hexane after immersion every time, until the pH value of n-hexane is in neutrality, then discharge opeing and will be solidifying
Glue drains；
（8）Drying：Half-dried gel will be dripped to take out, drying oven drying is moved to, 70-90 DEG C of drying temperature, got product after drying.
2. the efficient preparation technology of aerosil according to claim 1, it is characterised in that 1. step takes silicic acid
Sodium is contained in tank more than 4-8 times of sodium metasilicate volume, and the neutral water for then measuring 4 times of volumes of sodium metasilicate adds tank.
3. the efficient preparation technology of aerosil according to claim 1, it is characterised in that step is 2. to solidifying agent
Modulation：Hydrochloric acid is weighed, is modulated into 4.8mol/L watery hydrochloric acid, is produced to solidifying agent, it is standby.
4. the efficient preparation technology of aerosil according to claim 1, it is characterised in that step（2）Gel
Process：Instill what 2. step prepared in 1. water glass solution that step stirs to solidifying agent, be sufficiently stirred when being added dropwise,
To the dosage of solidifying agent：7.2ml dilute hydrochloric acid solution is added per 100ml water glass solutions, adjusts the pH value of in-tank mixing thing to 10,
Solution starts gel within about 10 minutes, then 60 DEG C of constant temperature aging 2.5 hours in tank, obtains wet gel block.
5. the efficient preparation technology of aerosil according to claim 1, it is characterised in that step（3）Removing sodium
Process：After the good wet gel block of upper step aging is smashed, cleaned one time with deionized water first, wet gel is then contained in 10
In the appearance ware of times wet gel volume, add neutral water and slowly continuously stir or be spaced stirring, change water once within every 6 hours, it is such to soak
Bubble about 36 hours, the pH value of water after immersion every time is checked, when pH value is to 6 or so, you can carry out in next step.
6. the efficient preparation technology of aerosil according to claim 1, it is characterised in that step（4）Solvent
Displacement：Wet gel obtained by upper step is drained the water, is then contained in wet gel in the appearance ware of 10 times of wet gel volumes, ethanol is added and delays
It is slow to stir, soaked at 60 DEG C of constant temperature, change ethanol once within every 6 hours, using ethanol replacement wherein moisture, check second after immersion every time
The number of degrees of alcohol, reach more than 93 degree until measuring and holding the ethanol number of degrees in ware, you can carry out in next step.
7. the efficient preparation technology of aerosil according to claim 1, it is characterised in that step（5）Just oneself
Alkane is replaced：After upper step is drained with the gel after ethanol replacement, the n-hexane of 2 times of gel volume is added, by gel in n-hexane
Immersion 3 hours, until being impregnated with.
8. the efficient preparation technology of aerosil according to claim 1, it is characterised in that step（6）Specifically
Step is：Gel after n-hexane is replaced is dripped to trim,ethylchlorosilane and hexane solution after half-dried, is added, and immersion 2-5 is small
When, constantly the HCL held under the sedimentation of ware bottom is discharged therebetween, and add trim,ethylchlorosilane and hexane solution；Immersion is completed
Afterwards, solution is discharged and drains gel.
9. the efficient preparation technology of aerosil according to claim 1, it is characterised in that step（7）Cleaning：
Gel after draining is put into n-hexane and soaked, the addition of n-hexane there was not gel, changed n-hexane once within every 3 hours, inspection
The pH value for the n-hexane looked into after immersion every time, until then the pH value of n-hexane discharge opeing and drains gel in neutrality.
10. the efficient preparation technology of aerosil according to claim 1, it is characterised in that step（8）Dry
It is dry：Half-dried gel will be dripped to take out, drying oven drying is moved to, 80 DEG C of drying temperature, got product after drying.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108751206A (en) * | 2018-06-26 | 2018-11-06 | 浙江岩谷科技有限公司 | A kind of method that transformation accelerated solvent extraction quickly prepares aeroge |
| CN114314600A (en) * | 2021-10-09 | 2022-04-12 | 武昌理工学院 | Method for preparing mesoporous silica drug carrier by using water glass |
| CN114906854A (en) * | 2022-05-10 | 2022-08-16 | 纳诺科技有限公司 | Neutral aerogel powder and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008044873A1 (en) * | 2006-10-10 | 2008-04-17 | Korea Institute Of Industrial Technology | Method for preparing permanently hydrophobic aerogel and permanently hydrophobic aerogel prepared by using the method |
| CN102020285A (en) * | 2009-09-16 | 2011-04-20 | 深圳大学 | Preparation method for hydrophobic silica aerogel |
| US20120171488A1 (en) * | 2010-12-30 | 2012-07-05 | Korea Institute Of Energy Research | Sheets including fibrous aerogel and method for producing the same |
| CN102633269A (en) * | 2012-04-19 | 2012-08-15 | 浙江宇达化工有限公司 | Preparation method of aerogel |
| CN103435055A (en) * | 2013-06-29 | 2013-12-11 | 浙江工业大学 | Method for preparing low density silica aerogel under normal pressure |
| CN106430220A (en) * | 2016-09-09 | 2017-02-22 | 商洛学院 | Method for preparing silicon dioxide aerogel from quartz tailings as raw material |
-
2017
- 2017-09-07 CN CN201710800989.8A patent/CN107651692A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008044873A1 (en) * | 2006-10-10 | 2008-04-17 | Korea Institute Of Industrial Technology | Method for preparing permanently hydrophobic aerogel and permanently hydrophobic aerogel prepared by using the method |
| CN102020285A (en) * | 2009-09-16 | 2011-04-20 | 深圳大学 | Preparation method for hydrophobic silica aerogel |
| US20120171488A1 (en) * | 2010-12-30 | 2012-07-05 | Korea Institute Of Energy Research | Sheets including fibrous aerogel and method for producing the same |
| CN102633269A (en) * | 2012-04-19 | 2012-08-15 | 浙江宇达化工有限公司 | Preparation method of aerogel |
| CN103435055A (en) * | 2013-06-29 | 2013-12-11 | 浙江工业大学 | Method for preparing low density silica aerogel under normal pressure |
| CN106430220A (en) * | 2016-09-09 | 2017-02-22 | 商洛学院 | Method for preparing silicon dioxide aerogel from quartz tailings as raw material |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108751206A (en) * | 2018-06-26 | 2018-11-06 | 浙江岩谷科技有限公司 | A kind of method that transformation accelerated solvent extraction quickly prepares aeroge |
| CN108751206B (en) * | 2018-06-26 | 2020-04-07 | 浙江岩谷科技有限公司 | Method for rapidly preparing aerogel by variable-pressure accelerated solvent extraction |
| CN114314600A (en) * | 2021-10-09 | 2022-04-12 | 武昌理工学院 | Method for preparing mesoporous silica drug carrier by using water glass |
| CN114906854A (en) * | 2022-05-10 | 2022-08-16 | 纳诺科技有限公司 | Neutral aerogel powder and preparation method thereof |
| CN114906854B (en) * | 2022-05-10 | 2023-09-22 | 纳诺科技有限公司 | Neutral aerogel powder and preparation method thereof |
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