CN115787138A - Low-thermal-conductivity heat-insulation fiber felt and preparation method thereof - Google Patents
Low-thermal-conductivity heat-insulation fiber felt and preparation method thereof Download PDFInfo
- Publication number
- CN115787138A CN115787138A CN202211439305.3A CN202211439305A CN115787138A CN 115787138 A CN115787138 A CN 115787138A CN 202211439305 A CN202211439305 A CN 202211439305A CN 115787138 A CN115787138 A CN 115787138A
- Authority
- CN
- China
- Prior art keywords
- rare earth
- earth oxide
- inorganic
- inorganic rare
- nitrate hexahydrate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Inorganic Fibers (AREA)
Abstract
The invention discloses a low-thermal-conductivity heat-insulating fiber felt and a preparation method thereof, wherein the fiber felt is formed by weaving inorganic rare earth oxide nano fibers, a plurality of inorganic rare earth oxide nano fibers are staggered, and air holes are formed by lapping the fibers; the inorganic rare earth oxide nano fiber is inorganic rare earth oxide multi-item solid solution, and the chemical general formula of the inorganic rare earth oxide is RE 2 O 3 Said inorganic rare earth oxide RE 2 O 3 The RE site element in the (B) is selected from yttrium, ytterbium, samarium, europium, erbium, lanthanum, dysprosium, cerium, praseodymium, neodymium, gadolinium, holmium or lutetium, etc., and the inorganic rare earth oxide multi-term solid solution at least comprises RE of 3 different rare earth elements 2 O 3 . Low thermal conductivity thermal insulation fiberThe fiber felt has extremely low heat conductivity and can effectively block heat transfer. The rare earth metal oxide solid solution nanofiber heat insulation felt disclosed by the invention is simple in preparation steps, low in cost, capable of realizing mass production, capable of being recycled for multiple times and stable in performance.
Description
Technical Field
The present invention relates to inorganic oxide fiber thermal insulation blankets, and more particularly, to a low thermal conductivity thermal insulation blanket.
Background
The energy is a material basis on which the human society depends on survival and development, and is of great importance for developing energy-saving devices with wide applicability for the purpose of building resource conservation and environment-friendly society. The heat insulation fiber felt mainly comprises a solid matrix and air holes, wherein the solid matrix and the air holes are continuous phases, and the heat insulation fiber felt can retard heat flow transmission. Generally, the heat insulation fiber felt has the characteristics of light weight, looseness, porosity, small heat conductivity coefficient, excellent thermal shock resistance and the like, and can be used for heat insulation materials of industrial smelting furnaces, external heat insulation materials of building external walls, aviation and aerospace heat protection materials and the like.
At present, fiber heat insulation felts made of traditional materials such as asbestos, rock wool, glass wool and alumina generally have the defects of high heat conductivity, poor heat insulation performance, low strength, poor toughness, poor air permeability, narrow application range and the like, and are difficult to meet increasingly complex application environments. Therefore, the development of the low-thermal-conductivity heat-insulating fiber felt with wide temperature resistance range and excellent comprehensive performance has great practical application value.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the existing fiber heat insulation felt has high heat conductivity and poor heat insulation performance.
The invention further solves the technical problems that: the existing fiber heat insulation felt has low stability from normal temperature to ultrahigh temperature.
The invention further solves the technical problems that: the existing preparation method of the fiber heat insulation felt is complex and has higher cost.
In order to solve the technical problems, the invention provides a low-thermal-conductivity heat-insulation fiber felt which is woven by inorganic rare earth oxide nano fibers, wherein a plurality of inorganic rare earth oxide nano fibers are staggered, and air holes are formed by lapping the fibers;
the inorganic rare earth oxide nanofiber is an inorganic rare earth oxide multi-item solid solution, and the chemical general formula of the inorganic rare earth oxide is RE 2 O 3 Said inorganic rare earth oxide RE 2 O 3 RE bit of (1)The element is selected from yttrium, ytterbium, samarium, europium, erbium, lanthanum, dysprosium, cerium, praseodymium, neodymium, gadolinium, holmium or lutetium, etc., and the inorganic rare earth oxide multi-solid solution at least comprises RE of 3 different rare earth elements 2 O 3 。
The inorganic rare earth oxide nanofiber matrix material has a crystal structure of a single bixbyite phase and a space group ofIa`3。
The fiber diameter of the inorganic rare earth oxide nanofiber matrix material is 50 nm 8210nm and 1000 nm (nanometer).
The fiber of the inorganic rare earth oxide nanofiber matrix material consists of grain stacks with the particle size of 5 nm-100 nm.
The inorganic rare earth oxide nanofiber forms pores in the aggregate after being woven, the porosity can be adjusted through a weaving method, and the porosity range is 10% -80%; the pore size is 5 nm-500 nm.
A preparation method of a low-thermal-conductivity heat-insulating fiber felt comprises the following steps:
1) Optionally selecting at least three rare earth nitrates, dissolving the rare earth nitrates in a mixed solution of deionized water and ethanol, and preparing each rare earth nitrate according to an equimolar ratio to obtain a clear solution, wherein the mass ratio of the deionized water to the ethanol is 1; then adding polyvinylpyrrolidone (PVP, mn 1,300,000) to adjust the viscosity, wherein the mass ratio of the PVP to the transparent clear solution is 1; stirring for 5-10 hours at room temperature by using a magnetic stirrer to obtain a transparent and thick precursor solution; the rare earth nitrate is yttrium nitrate hexahydrate (Y (NO) 3 ) 3 ·6H 2 O), ytterbium nitrate pentahydrate (Yb (NO) 3 ) 3 ·5H 2 O), erbium nitrate hexahydrate (Er (NO) 3 ) 3 ·6H 2 O), samarium nitrate hexahydrate (Sm (NO) 3 ) 3 ·6H 2 O), europium nitrate hexahydrate (Eu (NO) 3 ) 3 ·6H 2 O), lanthanum nitrate hexahydrate (La (NO) 3 ) 3 ·6H 2 O) or dysprosium nitrate hexahydrate (Dy (NO) 3 ) 3 ·6H 2 O）；
2) Preparing precursor fiber by adopting an electrostatic spinning method, which comprises the following specific steps:
transferring the precursor solution into an injection pump, adjusting the propelling speed of the injection pump, setting the electrostatic spinning voltage value to be 12-18KV (kilovolt) and the electrode distance to be 10-20cm (centimeter), and obtaining uniform precursor fibers on a collecting device through a continuous electrostatic spinning process;
3) And (3) heat treatment: and after electrostatic spinning is finished, putting the stripped non-woven fabric into a muffle furnace, setting the air atmosphere temperature to be 500-1000 ℃, and heating at the set heating rate and time to obtain the inorganic rare earth oxide nano fiber felt with good appearance.
The invention has the following beneficial effects: the low-thermal-conductivity heat-insulating fiber felt has extremely low thermal conductivity of 0.01 W.m -1 ·K -1 -1.00 W·m -1 ·K -1 The multi-term solid solution fiber can effectively obstruct heat transfer. The low-thermal-conductivity heat-insulating fiber felt disclosed by the invention is prepared from the high-melting-point rare earth oxide, has high stability from normal temperature to ultrahigh temperature, has an extremely wide application range, and can be used in civil scenes such as building wall heat insulation and the like, industrial scenes such as high-temperature furnace body heat-insulating bricks and the like, and aerospace fields such as ultrahigh-temperature thermal protection and the like.
Meanwhile, the rare earth metal oxide solid solution nanofiber heat insulation felt is simple in preparation steps, low in raw material cost, capable of realizing low-cost mass production of the heat insulation felt, capable of being recycled for multiple times, and stable in performance.
Drawings
FIG. 1 is a schematic view of a low thermal conductivity insulating fiber mat structure of the present invention;
FIG. 2 is a micrograph (SEM) of example 1 of a low thermal conductivity insulating fiber mat of the present invention;
FIG. 3 is a phase composition diagram (XRD) of the low thermal conductivity insulation fiber mat of the present invention in example 1;
FIG. 4 is a Transmission Electron Microscope (TEM) photograph and a scanning of the energy spectrum distribution of example 1 of a low thermal conductivity insulation fiber mat of the present invention;
fig. 5 is a graph of thermal conductivity performance for examples 1-3 of low thermal conductivity insulating fiber mats of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1
As shown in figure 1 (a), the low-thermal-conductivity heat-insulating fiber felt is composed of inorganic rare earth oxide nano fibers and air holes, can be cut and processed, can be made into any required shape, and has a heat-insulating function after the surface of an object to be protected is coated.
As shown in fig. 1 (b), the low thermal conductivity insulation fiber mat of the present invention can also be made into a block fiber brick to produce an insulation function in a direct stacking manner.
A low-thermal-conductivity heat-insulating fiber felt is formed by weaving inorganic rare earth oxide nano fibers, wherein a plurality of inorganic rare earth oxide nano fibers are staggered, and air holes are formed by lapping the fibers;
the inorganic rare earth oxide nanofiber is an inorganic rare earth oxide multi-item solid solution, and the chemical general formula of the inorganic rare earth oxide is RE 2 O 3 Said inorganic rare earth oxide RE 2 O 3 The RE site element in the composite is selected from yttrium, ytterbium, samarium, europium, erbium, lanthanum, dysprosium, cerium, praseodymium, neodymium, gadolinium, holmium or lutetium, etc., and the inorganic rare earth oxide multi-solid solution at least comprises RE of 3 different rare earth elements 2 O 3 。
The inorganic rare earth oxide nanofiber matrix material has a crystal structure of a single bixbyite phase and a space group ofIa`3。
The fiber diameter of the inorganic rare earth oxide nanofiber matrix material is 50 nm 8210nm and 1000 nm (nanometer).
The fiber of the inorganic rare earth oxide nanofiber matrix material consists of a grain stack with the particle size of 5 nm-100 nm.
The inorganic rare earth oxide nanofiber forms pores in the aggregate after being woven, the porosity can be adjusted through a weaving method, and the porosity range is 10% -80%; the pore size is 5 nm-500 nm.
The inorganic rare earth oxide nanofiber material can be independently used as a chopped fiber for filling and heat insulation. The size and thickness of the low thermal conductivity insulation fiber felt are not limited. The low-thermal conductivity heat-insulating fiber felt has strong processability and can be made into low-thermal conductivity heat-insulating fiber bricks.
The low-thermal-conductivity heat-insulating fiber felt has the room-temperature thermal conductivity range of 0.01 W.m -1 ·K -1 -1.00 W·m -1 ·K -1 . (W, m, K represent Watt, meter, kelvin, respectively per meter Kelvin);
the thermal conductivity range at 2000K temperature is 0.40 W.m -1 ·K -1 -1.50 W·m -1 ·K -1 (ii) a The use temperature range is 0K-2500K.
The low-thermal-conductivity heat-insulation fiber felt is strong in toughness and can still recover after 10000 times of bending tests.
A preparation method of a low-thermal-conductivity heat-insulating fiber felt comprises the following steps:
1) Yttrium nitrate hexahydrate (Y (NO) 3 ) 3 ·6H 2 O), ytterbium nitrate pentahydrate (Yb (NO) 3 ) 3 ·5H 2 O), erbium nitrate hexahydrate (Er (NO) 3 ) 3 ·6H 2 O), samarium nitrate hexahydrate (Sm (NO) 3 ) 3 ·6H 2 O), europium nitrate hexahydrate (Eu (NO) 3 ) 3 ·6H 2 O) dissolving in a mixed solution of deionized water and ethanol according to an equimolar ratio to obtain a clear solution, wherein the mass ratio of the deionized water to the ethanol is 1; then polyvinylpyrrolidone (PVP, mn 1,300,000 (Mn 1,300,000 means that the molecular weight of polyvinylpyrrolidone is 1,300,000) is added to adjust the viscosity, the mass ratio of the polyvinylpyrrolidone PVP to the solution is 1,300,000, and the mixture is stirred for 5 hours at room temperature by a magnetic stirrer to obtain a transparent and thick precursor solution.
2) Preparing precursor fiber by adopting an electrostatic spinning method, which comprises the following specific steps:
transferring the precursor solution into an injection pump, adjusting the propelling speed of the injection pump, setting the electrostatic spinning voltage value to be 12-18KV (kilovolt), setting the electrode distance to be 10-20cm (centimeter), and obtaining uniform precursor fibers on a collecting device through a continuous electrostatic spinning process;
3) And (3) heat treatment: after the electrostatic spinning is finished, the peeled non-woven fabric isPlacing the mixture into a muffle furnace, wherein the air atmosphere is 500 ℃ and the temperature is 10 ℃ per minute (DEG C. Min) -1 ) Heating for 2 hours (h) at a rate of (1) to obtain (Y) with good morphology 0.2 Yb 0.2 Er 0.2 Sm 0.2 Eu 0.2 ) 2 O 3 Inorganic nanofibers having an average nanofiber diameter of 200 nanometers (nm).
As shown in FIG. 2, (Y) in example 1 0.2 Yb 0.2 Er 0.2 Sm 0.2 Eu 0.2 ) 2 O 3 The inorganic nano-fiber has uniform and smooth surface and high continuity.
As shown in FIG. 3, (Y) in example 1 0.2 Yb 0.2 Er 0.2 Sm 0.2 Eu 0.2 ) 2 O 3 Inorganic nano-fiber, the crystal structure is single bixbyite phase, and the space group isIa`3。
As shown in FIG. 4, (Y) in example 1 0.2 Yb 0.2 Er 0.2 Sm 0.2 Eu 0.2 ) 2 O 3 The inorganic nano-fiber has the advantages of uniform distribution of all elements and no obvious segregation phenomenon.
Determined by laser flash thermal conductivity meter (Y) 0.2 Yb 0.2 Er 0.2 Sm 0.2 Eu 0.2 ) 2 O 3 Thermal diffusivity of inorganic nanofibers (D) th ) The samples cut for measuring thermal diffusivity are phi 10mm x 1mm and covered with platinum and graphite layers to prevent thermal radiation penetration, calculated using the Neumann-Kopp rule (Y) 0.2 Yb 0.2 Er 0.2 Sm 0.2 Eu 0.2 ) 2 O 3 Specific Heat Capacity (Cp) of inorganic nanofibers, thermal conductivity (κ) is represented by the thermal diffusivity (D) as shown in FIG. 5 th ) Specific heat capacity (Cp) and theoretical density (. Rho.).
The test results show that (Y) 0.2 Yb 0.2 Er 0.2 Sm 0.2 Eu 0.2 ) 2 O 3 The heat-insulating fiber felt with low heat conductivity has the room temperature heat conductivity of 0.24W m at the lowest -1 ·K -1 The thermal conductivity at 2000K is 0.77 W.m -1 ·K -1 。
Example 2
A preparation method of a low-thermal-conductivity heat-insulating fiber felt comprises the following steps:
1) Yttrium nitrate hexahydrate (Y (NO) 3 ) 3 ·6H 2 O), ytterbium nitrate pentahydrate (Yb (NO) 3 ) 3 ·5H 2 O), lanthanum nitrate hexahydrate (La (NO) 3 ) 3 ·6H 2 O), samarium nitrate hexahydrate (Sm (NO) 3 ) 3 ·6H 2 O), europium nitrate hexahydrate (Eu (NO) 3 ) 3 ·6H 2 O) dissolving in a mixed solution of deionized water and ethanol according to an equimolar ratio to obtain a clear solution, wherein the mass ratio of the deionized water to the ethanol is 1; then adding polyvinylpyrrolidone (PVP, mn 1,300,000) to regulate the viscosity, wherein the ratio of the PVP to the solution is 1; stirring the mixture for 5 hours at room temperature by using a magnetic stirrer to obtain a transparent and thick precursor solution.
2) Preparing precursor fiber by adopting an electrostatic spinning method, which comprises the following specific steps:
transferring the precursor solution into an injection pump, adjusting the propelling speed of the injection pump, setting the electrostatic spinning voltage value to be 12-18KV (kilovolt) and the electrode distance to be 10-20cm (centimeter), and obtaining uniform precursor fibers on a collecting device through a continuous electrostatic spinning process;
3) And (3) heat treatment: after the electrostatic spinning is finished, the peeled non-woven fabric is put into a muffle furnace, and the air atmosphere is 500 ℃ at 10 ℃ per minute (DEG C. Min) -1 ) Heating for 2 hours (h) at a rate of (1) to obtain (Y) with good morphology 0.2 Yb 0.2 Sm 0.2 Eu 0.2 La 0.2 ) 2 O 3 Inorganic nanofibers.
Measured by using laser flash thermal conductivity meter (Y) 0.2 Yb 0.2 Sm 0.2 Eu 0.2 La 0.2 ) 2 O 3 Thermal diffusivity (D) of nanofibers th ) The samples cut for measuring thermal diffusivity are [. Sup.10 mm.times.1 mm ] and covered with platinum and graphite layers to prevent penetration of thermal radiation (Y) was calculated using the Neumann-Kopp rule 0.2 Yb 0.2 Sm 0.2 Eu 0.2 La 0.2 ) 2 O 3 Nano-fiberSpecific heat capacity (Cp), thermal conductivity (κ) from thermal diffusivity (D) th ) Specific heat capacity (Cp) and theoretical density (. Rho.).
The test results show that (Y) 0.2 Yb 0.2 Sm 0.2 Eu 0.2 La 0.2 ) 2 O 3 The heat-insulating fiber felt with low heat conductivity has the room-temperature heat conductivity of 0.18 W.m at the lowest -1 ·K -1 Thermal conductivity at 2000K of 0.62 W.m -1 ·K -1 。
Example 3
1) Hydrated yttrium nitrate (Y (NO) 3 ) 3 ·6H 2 O), ytterbium nitrate pentahydrate (Yb (NO) 3 ) 3 ·5H 2 O), dysprosium nitrate hexahydrate (Dy (NO) 3 ) 3 ·6H 2 O), samarium nitrate hexahydrate (Sm (NO) 3 ) 3 ·6H 2 O), europium nitrate hexahydrate (Eu (NO) 3 ) 3 ·6H 2 O) dissolving in a mixed solution of deionized water and ethanol according to an equimolar ratio to obtain a transparent clear solution, wherein the mass ratio of the deionized water to the ethanol is 1; then adding polyvinylpyrrolidone (PVP, mn 1,300,000) to regulate the viscosity, wherein the ratio of the PVP to the solution is 1; stirring the mixture for 5 hours at room temperature by using a magnetic stirrer to obtain a transparent and thick precursor solution.
2) The method for preparing the precursor fiber by adopting the electrostatic spinning method comprises the following specific steps:
transferring the precursor solution into an injection pump, adjusting the propelling speed of the injection pump, setting the electrostatic spinning voltage value to be 12-18KV (kilovolt) and the electrode distance to be 10-20cm (centimeter), and obtaining uniform precursor fibers on a collecting device through a continuous electrostatic spinning process;
3) And (3) heat treatment: after the electrostatic spinning is finished, the peeled non-woven fabric is put into a muffle furnace at the air atmosphere of 550 ℃ and 10 ℃ min -1 Heating at a rate of 10 ℃ per minute for 2 hours to obtain (Y) with good morphology 0.2 Yb 0.2 Sm 0.2 Eu 0.2 Dy 0.2 ) 2 O 3 Inorganic nanofibers.
Is measured by using a laser flash thermal conductivity meter 0.2 Yb 0.2 Sm 0.2 Eu 0.2 Dy 0.2 ) 2 O 3 Thermal diffusivity of nanofibers (D) th ) The samples cut for measuring thermal diffusivity are [. Sup.10 mm.times.1 mm ] and covered with platinum and graphite layers to prevent penetration of thermal radiation (Y) was calculated using the Neumann-Kopp rule 0.2 Yb 0.2 Sm 0.2 Eu 0.2 Dy 0.2 ) 2 O 3 Specific heat capacity (Cp) and thermal conductivity (κ) of the nanofibers are determined by the thermal diffusivity (D) th ) Specific heat capacity (Cp) and theoretical density (rho).
The test results show that (Y) 0.2 Yb 0.2 Sm 0.2 Eu 0.2 Dy 0.2 ) 2 O 3 The heat-insulating fiber felt with low heat conductivity has the room-temperature heat conductivity of 0.25 W.m at the lowest -1 ·K -1 Thermal conductivity at 2000K of 0.90 W.m -1 ·K -1 。
It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict. The described embodiments are only some embodiments of the invention, not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Claims (10)
1. A low thermal conductivity insulation fiber mat characterized by: the composite material is formed by weaving inorganic rare earth oxide nano fibers, a plurality of inorganic rare earth oxide nano fibers are staggered, and the fibers are overlapped to form air holes;
the inorganic rare earth oxide nano fiber is inorganic rare earth oxide multi-item solid solution, and the chemical general formula of the inorganic rare earth oxide is RE 2 O 3 Said inorganic rare earth oxide RE 2 O 3 The RE site element in the (B) is selected from yttrium, ytterbium, samarium, europium, erbium, lanthanum, dysprosium, cerium, praseodymium, neodymium, gadolinium, holmium or lutetium, and the inorganic rare earth oxide multi-solid solution at least comprises RE of 3 different rare earth elements 2 O 3 。
2. The low thermal conductivity insulating fiber mat of claim 1, wherein: the inorganic rare earth oxide nanofiber matrix material has a crystal structure of a single bixbyite phase and a space group ofIa`3。
3. The low thermal conductivity insulating fiber mat of claim 1, wherein: the fiber diameter of the inorganic rare earth oxide nanofiber matrix material is 50 nm, 8210nm and 1000 nm.
4. The low thermal conductivity insulating fiber mat of claim 1, wherein: the fiber of the inorganic rare earth oxide nanofiber matrix material consists of grain stacks with the particle size of 5 nm-100 nm.
5. The low thermal conductivity insulating fiber mat of claim 1, wherein: the inorganic rare earth oxide nano-fiber forms pores in the aggregate after being woven, and the porosity range is 10% -80%; the pore size is 5 nm-500 nm.
6. A preparation method of a low-thermal-conductivity heat-insulating fiber felt is characterized by comprising the following steps:
1) Optionally selecting at least three rare earth nitrates, dissolving the rare earth nitrates in a mixed solution of deionized water and ethanol, and preparing each rare earth nitrate according to an equimolar ratio to obtain a clear solution, wherein the mass ratio of the deionized water to the ethanol is 1; then adding polyvinylpyrrolidone PVP (polyvinylpyrrolidone) to adjust the viscosity, wherein the mass ratio of the PVP to the clear solution is 1/8/8210and 1; stirring for 5-10 hours at room temperature by using a magnetic stirrer to obtain a transparent and thick precursor solution;
2) Preparing precursor fiber by adopting an electrostatic spinning method, which comprises the following specific steps:
transferring the precursor solution into an injection pump, adjusting the propelling speed of the injection pump, setting the electrostatic spinning voltage value to be 12-18KV, setting the electrode distance to be 10-20cm, and obtaining uniform precursor fibers on a collecting device through a continuous electrostatic spinning process;
3) And (3) heat treatment: and after electrostatic spinning is finished, putting the peeled non-woven fabric into a muffle furnace, setting the air atmosphere temperature to be 500-1000 ℃, and heating at the set heating rate and time to obtain the inorganic rare earth oxide nanofiber felt.
7. The method of making a low thermal conductivity insulating fiber mat of claim 6, wherein: in step 1), the rare earth nitrate salt includes: yttrium nitrate hexahydrate, ytterbium nitrate pentahydrate, erbium nitrate hexahydrate, samarium nitrate hexahydrate and europium nitrate hexahydrate.
8. The method of making a low thermal conductivity insulating fiber mat of claim 7, wherein: in step 3), at 10 ℃ min -1 Heating at a rate of (3) for 2 hours.
9. The method of making a low thermal conductivity insulating fiber mat of claim 6, wherein: in step 1), the rare earth nitrate salt includes: yttrium nitrate hexahydrate, ytterbium nitrate pentahydrate, lanthanum nitrate hexahydrate, samarium nitrate hexahydrate, and europium nitrate hexahydrate.
10. The method of making a low thermal conductivity insulating fiber mat as claimed in claim 6, wherein: in step 1), the rare earth nitrate salt includes: yttrium nitrate hexahydrate, ytterbium nitrate pentahydrate, dysprosium nitrate hexahydrate, samarium nitrate hexahydrate and europium nitrate hexahydrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211439305.3A CN115787138B (en) | 2022-11-17 | 2022-11-17 | Low-heat-conductivity heat-insulation fiber felt and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211439305.3A CN115787138B (en) | 2022-11-17 | 2022-11-17 | Low-heat-conductivity heat-insulation fiber felt and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115787138A true CN115787138A (en) | 2023-03-14 |
| CN115787138B CN115787138B (en) | 2023-09-19 |
Family
ID=85438424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211439305.3A Active CN115787138B (en) | 2022-11-17 | 2022-11-17 | Low-heat-conductivity heat-insulation fiber felt and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115787138B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101235558A (en) * | 2008-03-12 | 2008-08-06 | 长春理工大学 | Method for preparing perovskite-type rare earth composite oxide porous hollow nano fiber |
| CN101805942A (en) * | 2010-03-26 | 2010-08-18 | 福建师范大学 | Rare earth doped yttrium oxide fluorescent nano-fiber and preparation method thereof |
| CN104153124A (en) * | 2014-07-30 | 2014-11-19 | 东华大学 | Flexible rare-earth oxide nanofiber membrane and preparation method thereof |
| CN111187424A (en) * | 2020-02-14 | 2020-05-22 | 山东大学 | Lanthanide rare earth-organic polymer precursor, lanthanide rare earth oxide fiber, and preparation method and application thereof |
-
2022
- 2022-11-17 CN CN202211439305.3A patent/CN115787138B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101235558A (en) * | 2008-03-12 | 2008-08-06 | 长春理工大学 | Method for preparing perovskite-type rare earth composite oxide porous hollow nano fiber |
| CN101805942A (en) * | 2010-03-26 | 2010-08-18 | 福建师范大学 | Rare earth doped yttrium oxide fluorescent nano-fiber and preparation method thereof |
| CN104153124A (en) * | 2014-07-30 | 2014-11-19 | 东华大学 | Flexible rare-earth oxide nanofiber membrane and preparation method thereof |
| CN111187424A (en) * | 2020-02-14 | 2020-05-22 | 山东大学 | Lanthanide rare earth-organic polymer precursor, lanthanide rare earth oxide fiber, and preparation method and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王进贤等: "Gd2O3:Yb3+, Er3+上转换纳米纤维的制备与表征", 红外与毫米波学报, vol. 29, no. 1, pages 10 - 15 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115787138B (en) | 2023-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103183513B (en) | Preparation method of proton conductive ceramic electrolyte film | |
| CN113501543B (en) | High-entropy rare earth zirconate nano aerogel and preparation method and application thereof | |
| CN114751737B (en) | Rare earth zirconate-based high-entropy ceramic nanofiber and preparation method and application thereof | |
| CN104230367A (en) | SiC-ZrC-ZrB2 nano complex phase ceramic modified C/C composite material and preparation method thereof | |
| CN104193384A (en) | Zirconium oxide-based porous composite material and preparation method thereof | |
| JP2011157632A (en) | Opened inorganic fiber bundle for composite material and method for producing the same, and ceramic-based composite material reinforced with the fiber bundle | |
| Guo et al. | A new design for preparation of high performance recrystallized silicon carbide | |
| CN109608218B (en) | Self-healing ceramic matrix composite and low-temperature rapid preparation method thereof | |
| CN114751744A (en) | Ceric acid rare earth based high-entropy ceramic material and preparation method thereof | |
| CN101281805B (en) | Method for preparing high temperature superconduction coating conductor buffer layer using polymer auxiliary azotate deposition | |
| CN116120081A (en) | High-entropy ceramic aerogel material and preparation method and application thereof | |
| Chi et al. | A novel facile way to synthesize proton-conducting Ba (Ce, Zr, Y) O3 solid solution with improved sinterability and electrical performance | |
| Yalamaç et al. | Ceramic fibers | |
| Naga et al. | Preparation and characterization of porous fibrous mullite bodies doped with TiO2 | |
| Li et al. | Flexible Al 2 O 3/ZrO 2 nanofibrous membranes for thermal insulation | |
| Verdenelli et al. | Sol-gel preparation and thermo-mechanical properties of porous xAl2O3–ySiO2 coatings on SiC Hi-Nicalon fibres | |
| Shao et al. | Rare-earth zirconate high-entropy nanofibrous porous ceramics for high-temperature thermal insulation applications | |
| CN115787138B (en) | Low-heat-conductivity heat-insulation fiber felt and preparation method thereof | |
| Guo et al. | Preparation and characterization of nanostructured Lu2Si2O7 feedstocks for plasma-sprayed environmental barrier coatings | |
| CN103864419A (en) | Preparation method of highly compact barium zirconate ceramic | |
| CN101281806A (en) | Method for preparing high temperature superconduction coating conductor buffer layer using polymer auxiliary deposition | |
| Liu et al. | Effect of rice husk powder as a binder on mechanical and thermal properties of ZrO2 hollow-fiber refractory bricks | |
| Streckova et al. | Preparation and Investigations of Ni_0.2Zn_0.8Fe_2O_4 Ferrite Nanofiber Membranes by Needleless Electrospinning Method | |
| EP3032207B1 (en) | Method for improving thermal efficiency of heating device and device for improving thermal efficiency of heating device | |
| CN114105629B (en) | Preparation method and application of rare earth chromate based porous conductive high-entropy ceramic |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |