CN101357852A - Preparation of fibrous reinforcement silicon dioxide aerogel plate - Google Patents
Preparation of fibrous reinforcement silicon dioxide aerogel plate Download PDFInfo
- Publication number
- CN101357852A CN101357852A CNA2007100496346A CN200710049634A CN101357852A CN 101357852 A CN101357852 A CN 101357852A CN A2007100496346 A CNA2007100496346 A CN A2007100496346A CN 200710049634 A CN200710049634 A CN 200710049634A CN 101357852 A CN101357852 A CN 101357852A
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- China
- Prior art keywords
- solvent
- silica aerogel
- board
- silicon dioxide
- hydrophobic silica
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Abstract
The invention relates to a process for preparing a fiber reinforcement silica aerogel board that comprises ceramic fiber, an organic solvent and home-made hydrophobic silica aerogel. The process comprises the following steps: 2 to 50mm of the ceramic fiber is uniformly dispersed with the solvent in a dispersion machine, then the home-made hydrophobic silica aerogel powder is added by step, and the solvent is added while stirring until uniform mixture is formed. The mixture is put into a home-made mold to be molded and part of the solvent is filtered and recycled. The ratio of the silica aerogel and the ceramic fiber is 1:0.1-10, the mold that contains the mixture is put into a drying channel at the temperature of 30 to 60 DEG C for running for 10 to 60min, then the fiber reinforcement silica aerogel board is formed, the board is dried at the temperature of 100 to 300 DEG C for 0.5 to 5 hours, and a super-insulation, fireproof and flame retardant warming board can be formed. The preparation process is simple and the operation is convenient. By measurement, if the board is exposed in normal temperature state for 3 days, the thermal conductivity is less than or equal to 0.035W/m.K.
Description
Technical field
The invention belongs to heat preservation and insulation field, especially for use in refrigerator and the resistant to elevated temperatures heat preservation and insulation field of needs.
Background technology
The preparation method of thermal insulation thermal insulation board is a lot, and architectural many usefulness polystyrene foam plates are sandwich to be warming plate, and its weak point is the heat insulation effect deficiency; Refrigerating plants such as refrigerator warming plate, how to fill in the past in 2000 with polyurethane foam, its weak point is that the polyurethane foam occupation space is big, the space effective rate of utilization of container is low, with high costs, introduces the deficiency that the vacuum heat-insulation technology has solved polyurethane foam from developed countries such as wests afterwards.At present, vacuum insulation panel has its weak point, because his heat insulation effect, only under condition not moist, relative vacuum, could keep good effect of heat insulation, as everyone knows, keep the relative vacuum long period to require sealed vessel to have definitely good resistance to air loss and weighting material not to discharge small-molecule substance.Based on above-mentioned argumentation, have only very low and be that the lagging material that does not absorb water can reach long-acting heat insulation when the thermal baffle thermal conductivity.
Summary of the invention
The purpose of this invention is to provide a kind of can the moisture regain in the normal state, and have the technology of preparing of the lower thermal insulation thermal insulation board of lower metastable thermal conductivity.
The realization the solution of the present invention is,
(1) ceramic fiber is dispersed in certain solvent.
(2) add quantitative self-control hydrophobic silica aerogel powder in batches.
(3) pour mould into, the recovery part solvent after mixing.
(4) drying treatment.
(5) packing of product.
Above-mentioned preparation process also can be with (1), the exchange of (2) two steps, and the effect that makes is basic identical.
Embodiment
The present invention will be further described below in conjunction with specific embodiment.
Embodiment 1
Take by weighing the 100gl-5mm ceramic fiber, join in the 2500ml normal hexane and disperse, rate of dispersion 2500-4000 rev/min, disperseed 10-30 minute, when the basic homemade silicon dioxide drainage powder of 500g that evenly adds later on, fully stir after 10-30 minute and pour in the homemade mould, leach partial solvent and reclaim.Put into 50 ℃ of baking ovens and allow its release solvent moulding, change in 200 ℃ of baking ovens the plate after the moulding over to one hour and be chilled to normal temperature, surveying its thermal conductivity is 0.0422w/m.k; Moulding is in bad order.
Embodiment 2
Other processes are constant, and it is 0.0350w/m.k that the fine amount of will making pottery is brought up to the 200g thermal conductivity.
Embodiment 3
Other processes are constant, and it is 0.03460w/m.k that the fine amount of will making pottery is brought up to the 300g thermal conductivity.
Embodiment 4
Other processes are constant, and it is 0.0310w/m.k that the fine amount of will making pottery is brought up to the 400g thermal conductivity.
Embodiment 5
Other processes are constant, and it is 0.0257w/m.k that the fine amount of will making pottery is brought up to the 500g thermal conductivity.
Embodiment 6
Other processes are constant, and it is 0.0330w/m.k that the fine amount of will making pottery is brought up to the 600g thermal conductivity.
Claims (6)
1. a technology for preparing fibrous reinforcement silicon dioxide aerogel plate is core material with homemade hydrophobic silica aerogel, it is characterized in that, is undertaken by following step:
(1) the short ceramic fiber of outsourcing is dispersed in the solvent with the solvent dispersion machine, controls add-on, adds homemade silicon dioxide drainage aerogel powder then under whipped state in batches, allows its thorough mixing.
(2) mixed slurry is poured in the mould, paved, the seasoning solvent flashing gets product.
(3) ready-made county Party committee plate was naturally cooled to room temperature in 100-300 ℃ of dry 0.5-5 hour.
2. according to claims 1 described technology, it is characterized in that described technology core is to have used homemade hydrophobic silica aerogel powder.
3. according to claims 1 described technology, it is characterized in that employed solvent is a non-aqueous solvent.
4. according to claims 1 described technology, it is characterized in that, the staple fibre of use, the length of its fiber is no more than 20mm, is preferably to be no more than 15mm, preferably is no more than 5mm.
5. according to claims 2 described technologies, it is characterized in that employed hydrophobic silica aerogel powder can use and still not change its hydrophobic performance under higher temperature condition.
6. according to claims 3 described technologies, it is characterized in that selected solvent can be any solvent outside dewatering, preferably dewater, any organic solvent outside the alcohol, more preferably alkane solvents.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100496346A CN101357852A (en) | 2007-07-30 | 2007-07-30 | Preparation of fibrous reinforcement silicon dioxide aerogel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100496346A CN101357852A (en) | 2007-07-30 | 2007-07-30 | Preparation of fibrous reinforcement silicon dioxide aerogel plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101357852A true CN101357852A (en) | 2009-02-04 |
Family
ID=40330469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100496346A Pending CN101357852A (en) | 2007-07-30 | 2007-07-30 | Preparation of fibrous reinforcement silicon dioxide aerogel plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101357852A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102838342A (en) * | 2012-09-27 | 2012-12-26 | 袁江涛 | Dry preparation method of high-temperature resistant nanometer micropore thermal insulation board |
| CN102964140A (en) * | 2011-08-31 | 2013-03-13 | 深圳光启高等理工研究院 | Preparation method of metamaterial dielectric substrate |
| CN103172355A (en) * | 2011-12-26 | 2013-06-26 | 深圳光启高等理工研究院 | Composite ceramic substrate and preparation method thereof |
| WO2015016730A2 (en) | 2013-08-02 | 2015-02-05 | Active Aerogels, Unipessoal, Lda. | Method for production of flexible panels of hydrophobic aerogel reinforced with fibre felts |
| TWI579480B (en) * | 2016-05-19 | 2017-04-21 | 富利康科技股份有限公司 | Method for strengthening ceramic fiber filter tube and strengthened ceramic fiber filter tube |
| CN106673490A (en) * | 2016-12-01 | 2017-05-17 | 深圳中凝科技有限公司 | Aerogel plate and preparation method thereof |
| CN106746902A (en) * | 2016-12-01 | 2017-05-31 | 湖北硅金凝节能减排科技有限公司 | Thermal insulation thermal insulation board and preparation method thereof |
| CN108503327A (en) * | 2018-04-13 | 2018-09-07 | 航天特种材料及工艺技术研究所 | A kind of low cost aeroge thermal insulation material, preparation method and applications |
| CN111254775A (en) * | 2020-01-17 | 2020-06-09 | 江西省昭昀建设工程有限公司 | Heat-insulation anti-freezing type highway and construction method thereof |
| CN112979269A (en) * | 2021-02-01 | 2021-06-18 | 施斌卿 | Application of aerogel composite material in preparation of electric box body heat-insulating material |
| CN114874026A (en) * | 2022-05-23 | 2022-08-09 | 哈尔滨工业大学 | Preparation method of high-strength fiber composite zirconia foamed ceramic |
| CN115490524A (en) * | 2022-05-27 | 2022-12-20 | 南京工业大学 | Preparation method of enhanced high-temperature-resistant silicon-based ceramic aerogel |
-
2007
- 2007-07-30 CN CNA2007100496346A patent/CN101357852A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102964140A (en) * | 2011-08-31 | 2013-03-13 | 深圳光启高等理工研究院 | Preparation method of metamaterial dielectric substrate |
| CN102964140B (en) * | 2011-08-31 | 2014-09-03 | 深圳光启高等理工研究院 | Preparation method of metamaterial dielectric substrate |
| CN103172355A (en) * | 2011-12-26 | 2013-06-26 | 深圳光启高等理工研究院 | Composite ceramic substrate and preparation method thereof |
| CN102838342A (en) * | 2012-09-27 | 2012-12-26 | 袁江涛 | Dry preparation method of high-temperature resistant nanometer micropore thermal insulation board |
| CN102838342B (en) * | 2012-09-27 | 2013-10-30 | 袁江涛 | Dry preparation method of high-temperature resistant nanometer micropore thermal insulation board |
| WO2015016730A2 (en) | 2013-08-02 | 2015-02-05 | Active Aerogels, Unipessoal, Lda. | Method for production of flexible panels of hydrophobic aerogel reinforced with fibre felts |
| TWI579480B (en) * | 2016-05-19 | 2017-04-21 | 富利康科技股份有限公司 | Method for strengthening ceramic fiber filter tube and strengthened ceramic fiber filter tube |
| CN106746902A (en) * | 2016-12-01 | 2017-05-31 | 湖北硅金凝节能减排科技有限公司 | Thermal insulation thermal insulation board and preparation method thereof |
| CN106673490A (en) * | 2016-12-01 | 2017-05-17 | 深圳中凝科技有限公司 | Aerogel plate and preparation method thereof |
| CN108503327A (en) * | 2018-04-13 | 2018-09-07 | 航天特种材料及工艺技术研究所 | A kind of low cost aeroge thermal insulation material, preparation method and applications |
| CN108503327B (en) * | 2018-04-13 | 2020-12-29 | 航天特种材料及工艺技术研究所 | Low-cost aerogel thermal insulation material, preparation method and application thereof |
| CN111254775A (en) * | 2020-01-17 | 2020-06-09 | 江西省昭昀建设工程有限公司 | Heat-insulation anti-freezing type highway and construction method thereof |
| CN112979269A (en) * | 2021-02-01 | 2021-06-18 | 施斌卿 | Application of aerogel composite material in preparation of electric box body heat-insulating material |
| CN114874026A (en) * | 2022-05-23 | 2022-08-09 | 哈尔滨工业大学 | Preparation method of high-strength fiber composite zirconia foamed ceramic |
| CN114874026B (en) * | 2022-05-23 | 2023-05-12 | 哈尔滨工业大学 | Preparation method of high-strength fiber composite zirconia foam ceramic |
| CN115490524A (en) * | 2022-05-27 | 2022-12-20 | 南京工业大学 | Preparation method of enhanced high-temperature-resistant silicon-based ceramic aerogel |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090204 |