CN110682622A - Aerogel material reinforced by fiber reinforcement and preparation method thereof - Google Patents
Aerogel material reinforced by fiber reinforcement and preparation method thereof Download PDFInfo
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- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
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- B32B37/1018—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure using only vacuum
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0004—Cutting, tearing or severing, e.g. bursting; Cutter details
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/245—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it being a foam layer
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- B32B38/00—Ancillary operations in connection with laminating processes
- B32B2038/0052—Other operations not otherwise provided for
- B32B2038/008—Sewing, stitching
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- B32B2250/00—Layers arrangement
- B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0253—Polyolefin fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/105—Ceramic fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B2266/00—Composition of foam
- B32B2266/12—Gel
- B32B2266/126—Aerogel, i.e. a supercritically dried gel
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
- B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/558—Impact strength, toughness
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Abstract
The embodiment of the invention discloses a fiber reinforcement reinforced aerogel material and a preparation method thereof, and particularly relates to the technical field of aerogel materials. According to the invention, when the aerogel is subjected to gelation, the aerogel wraps the fiber jig frame and the fiber connection jig frame connection assembly, so that the elastic fiber felt layer, the rigid fiber heat insulation felt layer and the base body layer are combined in an interweaving manner, the aerogel material and the fiber felt cloth are combined conveniently, the bonding of an adhesive is avoided, and the overall stability of the material is improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of aerogel materials, in particular to an aerogel material reinforced by a fiber reinforcement and a preparation method thereof.
Background
Aerogel is a solid form, one of the world's less dense solids. The density was 3 kg per cubic meter. A common aerogel is a silica aerogel. The aerogel material is generally coated by using the fiber felt cloth in the using process of the aerogel, and the using function of the aerogel material is enhanced by using the characteristics of the fiber material.
The prior art has the following defects: the connection of current aerogel and fibre felt cloth generally all adopts the viscose agent to carry out the combination that bonds, and this kind of bonding material is when repeated deformation uses, and the mode of bonding causes aerogel material and fibre felt cloth separation easily, and composite's stability is not high, and then influences the use of material.
Disclosure of Invention
Therefore, the embodiment of the invention provides a fiber reinforcement reinforced aerogel material and a preparation method thereof, wherein a fiber connection jig frame is sewn on one side of a fiber jig frame and a rigid fiber heat insulation felt layer which are sewn on the surface of an elastic fiber felt layer, when the aerogel is subjected to gelation, the aerogel wraps a connection assembly of the fiber jig frame and the fiber connection jig frame, so that the elastic fiber felt layer, the rigid fiber heat insulation felt layer and a base layer are combined in an interweaving way, the aerogel material and the fiber felt cloth are combined conveniently, the use of adhesive in bonding is avoided, the overall stability of the material is improved, and the problems caused in the prior art are solved.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions: the utility model provides an aerogel material by reinforcing of fiber body, includes the elastic fiber felt layer, elastic fiber felt layer surface both sides all are fixed and are provided with the base member layer, two the base member layer outside all is fixed and is provided with the thermal-insulated felt layer of rigid fiber, elastic fiber felt layer top end face and bottom end face are all fixed and have woven the fibre bed-jig, two the thermal-insulated felt layer of rigid fiber all is fixed with the corresponding one side of collective layer and has woven the fibre and connect the bed-jig, the fibre bed-jig matches the setting with the fibre and is connected the bed-jig.
Further, the elastic fiber felt layer is made of polytetrafluoroethylene fibers, the base layer is made of silicon dioxide aerogel materials, and the rigid fiber heat insulation layer is made of aluminum silicate ceramic fiber materials.
Furthermore, the fiber jig frame and the fiber connection jig frame are both made of polyamide resin fiber materials, the fiber jig frame repeatedly penetrates through the elastic fiber felt layer, and the fiber jig frame and the fiber connection jig frame are both arranged in a U-shaped bending mode.
A method of preparing an aerogel material reinforced with a fiber reinforcement:
the method comprises the following steps: taking felt cloth made of polytetrafluoroethylene fibers, cutting the felt cloth into a required shape and size, and sewing a fiber jig frame on the surface of the polytetrafluoroethylene fiber felt cloth by using polyamide resin fibers to prepare an elastic fiber felt layer for later use;
step two: taking felt cloth made of aluminum silicate ceramic fibers, cutting the felt cloth into aluminum silicate ceramic fiber felt cloth with the same shape and size as the elastic fiber felt layer made in the step two, and sewing a fiber connecting jig frame on the surface of the aluminum silicate ceramic fiber felt cloth by using polyamide resin fibers to make a rigid fiber heat-insulating felt layer for later use;
step three: and dissolving a certain amount of aerogel powder in a solvent to form aerogel powder solution.
Step four: adding a gel catalyst solution into the aerogel powder solution obtained in the third step, uniformly stirring and mixing to obtain a silicon dioxide aerogel glue solution for later use;
step four: placing a rigid fiber heat-insulation felt layer prepared in the third step at the bottom of a mold in advance, subsequently, punching a silicon dioxide aerogel glue solution prepared in the third step into the mold, after the silicon dioxide aerogel glue solution is uniformly distributed in the mold, sequentially and correspondingly placing an elastic fiber felt layer and another rigid fiber heat-insulation felt layer in alignment with the previously placed rigid fiber heat-insulation felt layer, interweaving a fiber jig frame and a fiber connection jig frame, closing the mold, sealing, vacuumizing, and heating the mold to enable the aerogel glue solution to stand for 10-30 min under the conditions of 0.7-0.9 MPa and 30-40 ℃ so as to finish gelation treatment;
step five: and taking out the gelled material body from the mold, and removing the redundant aerogel on the surface of the material body to obtain the fiber reinforcement reinforced aerogel material.
Further, the particle size of the aerogel powder prepared by the aerogel powder solution in the third step is 10-20 μm, and the concentration of the aerogel powder solution is 3-7 wt%.
Further, an acid solution is added into the aerogel powder solution prepared in the third step to enable the pH value of the system to be acid so as to avoid the polycondensation reaction, the acid solution is set to be a hydrochloric acid alcohol solution, and the pH value of the aerogel powder solution can be adjusted to be 2-3.
And further setting the gel catalyst solution added in the fourth step as an ammonia water alcoholic solution, and adjusting the pH value of the silica aerogel glue solution to 7-8.
The embodiment of the invention has the following advantages:
1. according to the invention, the flexibility of the material is improved by arranging the elastic fiber felt layer, the mechanical strength of the material is improved by utilizing the rigid fiber heat insulation felt layer, the fiber bed-jig is sewn on the surface of the elastic fiber felt layer and the fiber connection bed-jig is sewn on one side of the rigid fiber heat insulation felt layer, when the aerogel is subjected to gelation, the aerogel wraps the fiber bed-jig and the fiber connection bed-jig connection assembly, so that the elastic fiber felt layer, the rigid fiber heat insulation felt layer and the base layer are combined in an interweaving manner.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the combination of an elastic fiber felt layer and a rigid fiber heat insulation felt layer according to the present invention;
in the figure: 1 elastic fiber felt layer, 2 substrate layers, 3 rigid fiber heat insulation felt layers, 4 fiber jig frames and 5 fiber connection jig frames.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
referring to the attached drawings 1-2 of the specification, the aerogel material reinforced by the fiber reinforcement in this embodiment includes an elastic fiber felt layer 1, substrate layers 2 are fixedly arranged on both sides of the surface of the elastic fiber felt layer 1, rigid fiber heat insulation felt layers 3 are fixedly arranged on the outer sides of the two substrate layers 2, fiber jigs 4 are fixedly woven on the top end surface and the bottom end surface of the elastic fiber felt layer 1, fiber connection jigs 5 are fixedly woven on the surfaces of the two rigid fiber heat insulation felt layers 3 corresponding to the collector layer 2, and the fiber jigs 4 are arranged in a matching manner with the fiber connection jigs 5;
further, the elastic fiber felt layer 1 is made of polytetrafluoroethylene fibers, the base layer 2 is made of a silicon dioxide aerogel material, and the rigid fiber heat insulation layer 3 is made of an aluminum silicate ceramic fiber material.
Further, the fiber jig frame 4 and the fiber connection jig frame 5 are both made of polyamide resin fiber materials, the fiber jig frame 4 repeatedly penetrates through the elastic fiber felt layer 1, and the fiber jig frame 4 and the fiber connection jig frame 5 are both arranged in a U-shaped bending mode.
Specifically, the weight percentages in this embodiment are as follows:
a method of preparing an aerogel material reinforced with a fiber reinforcement:
the method comprises the following steps: taking felt cloth made of polytetrafluoroethylene fibers, cutting the felt cloth into a required shape and size, and sewing a fiber jig frame 4 on the surface of the polytetrafluoroethylene fiber felt cloth by using polyamide resin fibers to prepare an elastic fiber felt layer 1 for later use;
step two: taking felt cloth made of aluminum silicate ceramic fibers, cutting the felt cloth into aluminum silicate ceramic fiber felt cloth with the same shape and size as the elastic fiber felt layer 1 prepared in the step two, and sewing fiber connecting bed-jig 5 on the surface of the aluminum silicate ceramic fiber felt cloth by utilizing polyamide resin fibers to prepare a rigid fiber heat-insulating felt layer 3 for later use;
step three: and dissolving a certain amount of aerogel powder in a solvent to form aerogel powder solution.
Step four: adding a gel catalyst solution into the aerogel powder solution obtained in the third step, uniformly stirring and mixing to obtain a silicon dioxide aerogel glue solution for later use;
step four: placing a rigid fiber heat-insulation felt layer 3 prepared in the third step at the bottom of a mold in advance, subsequently, injecting silicon dioxide aerogel glue solution prepared in the third step into the mold, after the silicon dioxide aerogel glue solution is uniformly distributed in the mold, sequentially aligning and placing an elastic fiber felt layer 1 and another rigid fiber heat-insulation felt layer 3 corresponding to the previously placed rigid fiber heat-insulation felt layer 3, interweaving a fiber jig frame 4 and a fiber connecting jig frame 5, closing the mold, sealing, vacuumizing, and heating the mold to enable the aerogel glue solution to stand for 20min under the conditions of 0.8MPa and 35 ℃ so as to finish gelation treatment;
step five: and taking out the gelled material body from the mold, and removing the redundant aerogel on the surface of the material body to obtain the fiber reinforcement reinforced aerogel material.
Further, the particle size of the aerogel powder prepared by the aerogel powder solution in the third step is 15 μm, and the concentration of the aerogel powder solution is 5 wt%.
Further, an acid solution is added into the aerogel powder solution prepared in the third step to make the pH value of the system acidic so as to avoid the polycondensation reaction, the acid solution is set to be a hydrochloric acid alcohol solution, and the pH value of the aerogel powder solution can be adjusted to be 2.5.
Further, the gel catalyst solution added in the fourth step is set to be an ammonia water alcohol solution, and the pH value of the silica aerogel glue solution can be adjusted to be 7.5.
Example 2:
a method of preparing an aerogel material reinforced with a fiber reinforcement:
the method comprises the following steps: taking felt cloth made of polytetrafluoroethylene fibers, cutting the felt cloth into a required shape and size, and sewing a fiber jig frame 4 on the surface of the polytetrafluoroethylene fiber felt cloth by using polyamide resin fibers to prepare an elastic fiber felt layer 1 for later use;
step two: taking felt cloth made of aluminum silicate ceramic fibers, cutting the felt cloth into aluminum silicate ceramic fiber felt cloth with the same shape and size as the elastic fiber felt layer 1 prepared in the step two, and sewing fiber connecting bed-jig 5 on the surface of the aluminum silicate ceramic fiber felt cloth by utilizing polyamide resin fibers to prepare a rigid fiber heat-insulating felt layer 3 for later use;
step three: and dissolving a certain amount of aerogel powder in a solvent to form aerogel powder solution.
Step four: adding a gel catalyst solution into the aerogel powder solution obtained in the third step, uniformly stirring and mixing to obtain a silicon dioxide aerogel glue solution for later use;
step four: firstly, placing a rigid fiber heat-insulation felt layer 3 prepared in the third step at the bottom of a mold in advance, subsequently, injecting a silicon dioxide aerogel glue solution prepared in the third step into the mold, after the silicon dioxide aerogel glue solution is uniformly distributed in the mold, sequentially aligning and placing an elastic fiber felt layer 1 and another rigid fiber heat-insulation felt layer 3 corresponding to the previously placed rigid fiber heat-insulation felt layer 3, interweaving a fiber jig frame 4 and a fiber connecting jig frame 5 together, closing the mold, sealing, vacuumizing, and heating the mold to enable the aerogel glue solution to stand for 10min under the conditions of 0.7MPa and 30 ℃, thereby completing gelation treatment;
step five: and taking out the gelled material body from the mold, and removing the redundant aerogel on the surface of the material body to obtain the fiber reinforcement reinforced aerogel material.
Further, the particle size of the aerogel powder prepared by the aerogel powder solution in the third step is 10 μm, and the concentration of the aerogel powder solution is 3 wt%.
Further, an acid solution is added into the aerogel powder solution prepared in the third step to make the pH value of the system acidic so as to avoid the polycondensation reaction, the acid solution is set to be a hydrochloric acid alcohol solution, and the pH value of the aerogel powder solution can be adjusted to be 2.
Further, the gel catalyst solution added in the fourth step is set to be an ammonia water alcohol solution, and the pH value of the silica aerogel glue solution can be adjusted to be 7.
Example 3:
a method of preparing an aerogel material reinforced with a fiber reinforcement:
the method comprises the following steps: taking felt cloth made of polytetrafluoroethylene fibers, cutting the felt cloth into a required shape and size, and sewing a fiber jig frame 4 on the surface of the polytetrafluoroethylene fiber felt cloth by using polyamide resin fibers to prepare an elastic fiber felt layer 1 for later use;
step two: taking felt cloth made of aluminum silicate ceramic fibers, cutting the felt cloth into aluminum silicate ceramic fiber felt cloth with the same shape and size as the elastic fiber felt layer 1 prepared in the step two, and sewing fiber connecting bed-jig 5 on the surface of the aluminum silicate ceramic fiber felt cloth by utilizing polyamide resin fibers to prepare a rigid fiber heat-insulating felt layer 3 for later use;
step three: and dissolving a certain amount of aerogel powder in a solvent to form aerogel powder solution.
Step four: adding a gel catalyst solution into the aerogel powder solution obtained in the third step, uniformly stirring and mixing to obtain a silicon dioxide aerogel glue solution for later use;
step four: placing a rigid fiber heat-insulation felt layer 3 prepared in the third step at the bottom of a mold in advance, subsequently, injecting a silicon dioxide aerogel glue solution prepared in the third step into the mold, after the silicon dioxide aerogel glue solution is uniformly distributed in the mold, sequentially aligning and placing an elastic fiber felt layer 1 and another rigid fiber heat-insulation felt layer 3 corresponding to the previously placed rigid fiber heat-insulation felt layer 3, interweaving a fiber jig frame 4 and a fiber connecting jig frame 5, closing the mold, sealing, vacuumizing, and heating the mold to enable the aerogel glue solution to stand for 30min under the conditions of 0.9MPa and 30-40 ℃ so as to finish gelation treatment;
step five: and taking out the gelled material body from the mold, and removing the redundant aerogel on the surface of the material body to obtain the fiber reinforcement reinforced aerogel material.
Further, the particle size of the aerogel powder prepared by the aerogel powder solution in the third step is 20 μm, and the concentration of the aerogel powder solution is 7 wt%.
Further, an acid solution is added into the aerogel powder solution prepared in the third step to make the pH value of the system acidic so as to avoid the polycondensation reaction, the acid solution is set to be a hydrochloric acid alcohol solution, and the pH value of the aerogel powder solution can be adjusted to be 3.
Further, the gel catalyst solution added in the fourth step is set to be an ammonia water alcohol solution, and the pH value of the silica aerogel glue solution can be adjusted to be 8.
Example 4:
the fiber-reinforced aerogel materials prepared in examples 1-3 above were used to obtain the following data:
as can be known from the above table, the raw materials cooperation proportion is moderate in embodiment 1, and elastic fiber felt layer 1, rigid fiber heat insulation felt layer 3 and base member layer 2 interweave the combination stably, and the fire behavior of aerogel material is not influenced at all, and stable aerogel material's thermal-insulated effect is excellent, and aerogel and fibre felt cloth are connected stably, and aerogel material's overall stability can be strong, makes things convenient for aerogel material's use.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (7)
1. Aerogel material reinforced with a fibrous reinforcement, comprising a layer of elastic fibrous batt (1), characterized in that: elastic fiber felt layer (1) surface both sides all are fixed and are provided with base member layer (2), two base member layer (2) outside all is fixed and is provided with thermal-insulated felt layer of rigid fiber (3), elastic fiber felt layer (1) top end face and bottom end face all are fixed and have woven fibre bed-jig (4), two thermal-insulated felt layer of rigid fiber (3) and the corresponding one side of collection layer (2) all are fixed and have woven fibre and connect bed-jig (5), fibre bed-jig (4) and fibre are connected bed-jig (5) and are matchd and set up.
2. A fiber-reinforced aerogel material according to claim 1, wherein: the elastic fiber felt layer (1) is made of polytetrafluoroethylene fibers, the base layer (2) is made of silicon dioxide aerogel materials, and the rigid fiber heat insulation layer (3) is made of aluminum silicate ceramic fiber materials.
3. A fiber-reinforced aerogel material according to claim 1, wherein: the fiber jig frame (4) and the fiber connection jig frame (5) are both made of polyamide resin fiber materials, the fiber jig frame (4) repeatedly penetrates through the elastic fiber felt layer (1), and the fiber jig frame (4) and the fiber connection jig frame (5) are both arranged in a U-shaped bending mode.
4. A method of preparing an aerogel material reinforced with a fiber reinforcement, comprising:
the method comprises the following steps: taking felt cloth made of polytetrafluoroethylene fibers, cutting the felt cloth into a required shape and size, and sewing a fiber jig frame (4) on the surface of the polytetrafluoroethylene fiber felt cloth by utilizing polyamide resin fibers to prepare an elastic fiber felt layer (1) for later use;
step two: taking felt cloth made of aluminum silicate ceramic fibers, cutting the felt cloth into aluminum silicate ceramic fiber felt cloth with the same shape and size as the elastic fiber felt layer (1) prepared in the step two, and sewing a fiber connecting jig frame (5) on the surface of the aluminum silicate ceramic fiber felt cloth by using polyamide resin fibers to prepare a rigid fiber heat-insulating felt layer (3) for later use;
step three: and dissolving a certain amount of aerogel powder in a solvent to form aerogel powder solution.
Step four: adding a gel catalyst solution into the aerogel powder solution obtained in the third step, uniformly stirring and mixing to obtain a silicon dioxide aerogel glue solution for later use;
step four: firstly, placing a rigid fiber heat-insulation felt layer (3) prepared in the third step at the bottom of a mold in advance, then, flushing silicon dioxide aerogel glue solution prepared in the third step into the mold, after the silicon dioxide aerogel glue solution is uniformly distributed in the mold, sequentially and correspondingly placing an elastic fiber felt layer (1) and another rigid fiber heat-insulation felt layer (3) in an aligned mode with the previously placed rigid fiber heat-insulation felt layer (3), interweaving a fiber jig frame (4) and a fiber connecting jig frame (5), closing the mold, sealing, vacuumizing, heating the mold, enabling the aerogel glue solution to stand for 10-30 min under the conditions of 0.7-0.9 MPa and 30-40 ℃, and finishing gelation treatment;
step five: and taking out the gelled material body from the mold, and removing the redundant aerogel on the surface of the material body to obtain the fiber reinforcement reinforced aerogel material.
5. A method of preparing an aerogel material reinforced with fiber reinforcement according to claim 4, wherein: the particle size of the aerogel powder prepared by the aerogel powder solution in the third step is 10-20 μm, and the concentration of the aerogel powder solution is 3-7 wt%.
6. A method of preparing an aerogel material reinforced with fiber reinforcement according to claim 4, wherein: and adding an acid solution into the aerogel powder solution prepared in the third step to make the pH value of the system acidic so as to avoid the polycondensation reaction, wherein the acid solution is a hydrochloric acid alcohol solution, and the pH value of the aerogel powder solution can be adjusted to be 2-3.
7. A method of preparing an aerogel material reinforced with fiber reinforcement according to claim 4, wherein: and setting the gel catalyst solution added in the fourth step as an ammonia water alcoholic solution, and adjusting the pH value of the silica aerogel glue solution to 7-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911101983.7A CN110682622A (en) | 2019-11-12 | 2019-11-12 | Aerogel material reinforced by fiber reinforcement and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911101983.7A CN110682622A (en) | 2019-11-12 | 2019-11-12 | Aerogel material reinforced by fiber reinforcement and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110682622A true CN110682622A (en) | 2020-01-14 |
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| CN111908889A (en) * | 2020-07-11 | 2020-11-10 | 巩义市泛锐熠辉复合材料有限公司 | Composite fiber reinforced aerogel felt and preparation method thereof |
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| WO2022007797A1 (en) * | 2020-07-07 | 2022-01-13 | 巩义市泛锐熠辉复合材料有限公司 | Sandwich composite board and a preparation method therefor |
| WO2022012379A1 (en) * | 2020-07-13 | 2022-01-20 | 巩义市泛锐熠辉复合材料有限公司 | Heat insulation composite plate and preparation method therefor |
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