CN210462177U - Multilayer core material supported by woven fiber framework and vacuum insulation panel prepared by multilayer core material - Google Patents
Multilayer core material supported by woven fiber framework and vacuum insulation panel prepared by multilayer core material Download PDFInfo
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- CN210462177U CN210462177U CN201921531908.XU CN201921531908U CN210462177U CN 210462177 U CN210462177 U CN 210462177U CN 201921531908 U CN201921531908 U CN 201921531908U CN 210462177 U CN210462177 U CN 210462177U
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Abstract
The utility model provides a weave multilayer core material that fibrous skeleton supported and vacuum insulation panels of preparation has adopted to weave spatial structure as the skeleton, and skeleton upper surface lower surface has one deck fibrofelt, through setting up this kind of vacuum insulation panels who weaves the preparation of multilayer core material that the fibre supports for the skeleton, has increased vacuum insulation panels's compressive property, has improved vacuum insulation panels's life-span. Meanwhile, the epoxy modified organic silicon resin coating is arranged, so that the heat insulation and high temperature resistance of the vacuum heat insulation plate are improved, and the stability of the overall heat insulation performance is ensured.
Description
Technical Field
The utility model belongs to the vacuum insulation material field, in particular to weave multilayer core material that fibrous skeleton supported and the vacuum insulation panels of preparation.
Background
The vacuum insulation panel is an efficient energy-saving material obtained by placing a core material and an air suction material into a barrier bag for packaging, wherein the core material is a support body in the vacuum insulation panel, generally, porous medium materials such as aerogel, foamed polyurethane, silicon dioxide powder, asbestos fiber, glass fiber and the like are selected, and meanwhile, the core material becomes a key for determining whether the vacuum insulation panel can be kept in an original state for long-term service after air leakage.
At present, the heat conductivity coefficient of the vacuum heat insulation plate prepared by the core material can be 2-4kw/m.k, and the application field of the vacuum heat insulation plate is expanded to various industries such as household appliances, cold chain transportation, building external wall heat insulation and the like due to good heat insulation performance of the vacuum heat insulation plate, and further requirements are provided for the structure and the performance of the vacuum heat insulation plate along with the expansion of the application range.
SUMMERY OF THE UTILITY MODEL
In order to enlarge the application field of the vacuum heat-insulating plate more greatly, the utility model adds the weaving fiber as the framework of the core material on the basis of the common core material, thereby enhancing the mechanical property and simultaneously ensuring the heat-insulating property, therefore, the utility model provides a multilayer core material supported by the weaving fiber framework and a prepared vacuum heat-insulating plate, which comprises the core material, a drying agent and a vacuum film material, wherein the core material and the drying agent are fixedly arranged in the vacuum film material, and the vacuum machine is used for vacuumizing treatment in the vacuum film material; the core material is composed of a middle framework structure, an upper layer fiber felt and a lower layer fiber felt, the framework structure is a three-dimensional woven structure of flame cotton fibers and glass fibers, and the fibers on one sides, close to the vacuum membrane material, of the upper layer fiber felt and the lower layer fiber felt are plastically deformed by the volume fraction of 2-6.5%.
As an improvement, in the framework structure, the flame cotton fiber accounts for 10-25% of the framework structure by weight, wherein the height of the woven structure is 1-150 microns
As an improvement, the upper layer fiber felt and the lower layer fiber felt are both provided with centrifugal cotton fibers with the diameter of 10-150 mu m and silicon dioxide fibers with the diameter of 20-100 mu m, the two fibers are bonded together through a binder, and divalent inorganic salt electrolyte solid particles are doped in the middle.
As a refinement, the desiccant is an alkaline desiccant.
As an improvement, the vacuum film material is a composite film material, and one side of the composite film material, which is adjacent to the core material, is coated or sprayed with an epoxy modified organic silicon resin coating with the thickness of 1-50 mu m.
Has the advantages that: the utility model provides a weave multilayer core material that fibrous skeleton supported and the vacuum insulation panels of preparation has adopted to weave spatial structure as the skeleton, and skeleton upper surface lower surface has one deck fibrofelt, through setting up this kind of vacuum insulation panels who weaves the multilayer core material preparation that the fibre supported for the skeleton, has increased vacuum insulation panels's compressive property, has improved the life-span of panel. Meanwhile, the epoxy modified organic silicon resin coating is arranged, so that the heat insulation and high temperature resistance of the vacuum heat insulation plate are improved, and the stability of the overall heat insulation performance is ensured.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of the vacuum insulation panel of the present invention.
Fig. 2 is a schematic structural view of the vacuum insulation panel of the present invention.
In the drawings: 1. a core material; 2. a desiccant; 3. vacuum membrane material; 4. a framework structure; 5. an upper layer of fiber mat; 6. a lower layer of fiber mat; 7. epoxy modified silicone resin coating.
Detailed Description
The drawings of the present invention will be described in detail with reference to the embodiments.
The multilayer core material supported by the woven fiber framework and the prepared vacuum insulation panel comprise a core material 1, a drying agent 2 and a vacuum film material 3, wherein the core material 1 and the drying agent 2 are fixedly arranged at the part 3 of the vacuum film material, and the vacuum pumping treatment is carried out in the vacuum film material 3 through a vacuum machine; the core material 1 is composed of a middle framework structure 4, an upper layer fiber felt 5 and a lower layer fiber felt 6, the framework structure 4 is a three-dimensional woven structure of flame cotton fibers and glass fibers, and the fibers on one sides, close to the vacuum membrane material 3, of the upper layer fiber felt 5 and the lower layer fiber felt 6 are plastically deformed with the volume fraction of 2-6.5%.
In the framework structure 4, the flame cotton fiber accounts for 10-25% of the framework structure 4 by weight, the height of the woven structure is 1-150 micrometers, the woven three-dimensional structure can support the core material, the compression resistance and tensile mechanical properties of the prepared vacuum insulation panel are enhanced, the service life of the vacuum insulation panel is prolonged, and the use field is enlarged.
The upper layer fiber felt 5 and the lower layer fiber felt 6 are both set as follows: centrifugal cotton fiber with the diameter of 10-150 mu m and silicon dioxide fiber with the diameter of 20-100 mu m, wherein the two fibers are bonded together through a binder, and divalent inorganic salt electrolyte solid particles are doped in the middle. As the specific embodiment of the utility model, the bivalent inorganic salt electrolyte solid particle accounts for 0.1-12.5% of fibrofelt total mass, and wherein bivalent inorganic salt electrolyte selects calcium chloride, magnesium sulfate, calcium nitrate, magnesium nitrate, adopts behind the electrolyte solid particle, can show the aperture that reduces the core, and when the internal gas pressure of vacuum insulation panels rose, gaseous convection reduces to vacuum insulation panels's life has effectively been improved.
The drying agent 2 is an alkaline drying agent, and may be selected from, for example, calcium oxide, a montmorillonite drying agent, and an oxide drying agent containing metallic zirconium, and can effectively absorb a small amount of moisture to dry the interior of the core material.
The vacuum membrane material 3 is a composite membrane material, and one side membrane material of the composite membrane material, which is adjacent to the core material 1, is coated or sprayed with an epoxy modified organic silicon resin coating 7 with the thickness of 1-50 mu m, so that the heat resistance of the vacuum heat-insulating plate is effectively improved.
Example 1
Centrifugal cotton fibers with the diameter of 45 mu m and silicon dioxide fibers with the diameter of 100 mu m are selected, the two fibers are bonded together through a binder, and divalent inorganic salt electrolyte solid particle magnesium sulfate with the mass percentage of 1% is doped in the middle of the two fibers to be used as an upper layer fiber felt and a lower layer fiber felt. The middle of the framework structure is provided with 12 weight percent of flame cotton fiber, 2.5 volume percent of surface fiber plastic deformation and calcium oxide as a drying agent, and after vacuum membrane material packaging is carried out, the heat conductivity coefficients of a plurality of groups of vacuum heat insulation plates at different positions are measured, the average heat conductivity coefficient is 1.9kw/m.k, and the heat insulation performance is good.
Example 2
Centrifugal cotton fibers with the diameter of 85 micrometers and silicon dioxide fibers with the diameter of 75 micrometers are selected, the centrifugal cotton fibers and the silicon dioxide fibers are bonded together through a bonding agent, and bivalent inorganic salt electrolyte solid particle magnesium sulfate with the mass percentage of 8% is doped in the middle of the centrifugal cotton fibers and the silicon dioxide fibers to serve as an upper layer fiber felt and a lower layer fiber felt. The middle of the framework structure is provided with 17% of flame cotton fiber, 4.5% of surface fiber plastic deformation volume fraction and calcium oxide as a drying agent, and after vacuum film material packaging is carried out, the heat conductivity coefficient of the vacuum heat insulation plates at different positions is measured to be 2.2kw/m.k, so that the heat insulation performance is good.
Example 3
Centrifugal cotton fibers with the diameter of 150 mu m and silicon dioxide fibers with the diameter of 25 mu m are selected, the two fibers are bonded together through a binder, and divalent inorganic salt electrolyte solid particle magnesium sulfate with the mass percentage of 12% is doped in the middle of the two fibers to be used as an upper layer fiber felt and a lower layer fiber felt. The middle of the framework structure is provided with flame cotton fibers accounting for 25 weight percent of the framework structure, the surface fibers are plastically deformed by 6 volume percent, the drying agent is calcium oxide, and after vacuum film material packaging is carried out, the heat conductivity coefficient of the vacuum heat insulation plates at different positions is measured to be 2.1kw/m.k, so that the heat insulation performance is good.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (5)
1. The utility model provides a vacuum insulation panel of multilayer core and preparation that woven fiber skeleton supported which characterized in that: the drying agent-coated vacuum film comprises a core material (1), a drying agent (2) and a vacuum film material (3), wherein the core material (1) and the drying agent (2) are fixedly arranged inside the vacuum film material (3), and the vacuum film material (3) is a film material structure which is coated on the core material (1) and then is subjected to vacuum-pumping treatment by a vacuum machine; the core material (1) is composed of a middle framework structure (4), an upper layer fiber felt (5) and a lower layer fiber felt (6), the framework structure (4) is a three-dimensional woven structure of flame cotton fibers and glass fibers, and the fibers on one sides, close to the vacuum membrane material (3), of the upper layer fiber felt (5) and the lower layer fiber felt (6) are plastically deformed by 2-6.5% of volume fraction.
2. The woven fiber framework supported multi-layer core material and the prepared vacuum insulation panel according to claim 1 are characterized in that: in the framework structure (4), the flame cotton fiber accounts for 10-25% of the framework structure (4) by weight, wherein the height of the woven structure is 1-150 microns.
3. The woven fiber framework supported multi-layer core material and the prepared vacuum insulation panel according to claim 1 are characterized in that: the upper layer fiber felt (5) and the lower layer fiber felt (6) are both provided with centrifugal cotton fibers with the diameter of 10-150 mu m and silicon dioxide fibers with the diameter of 20-100 mu m, the two fibers are bonded together through a binder, and divalent inorganic salt electrolyte solid particles are doped in the middle.
4. The woven fiber framework supported multi-layer core material and the prepared vacuum insulation panel according to claim 1 are characterized in that: the drying agent (2) is an alkaline drying agent.
5. The woven fiber framework supported multi-layer core material and the prepared vacuum insulation panel according to claim 1 are characterized in that: the vacuum film material (3) is a composite film material, and one side of the composite film material, which is adjacent to the core material (1), is coated or sprayed with an epoxy modified organic silicon resin coating (7) with the thickness of 1-50 mu m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921531908.XU CN210462177U (en) | 2019-09-15 | 2019-09-15 | Multilayer core material supported by woven fiber framework and vacuum insulation panel prepared by multilayer core material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921531908.XU CN210462177U (en) | 2019-09-15 | 2019-09-15 | Multilayer core material supported by woven fiber framework and vacuum insulation panel prepared by multilayer core material |
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| Publication Number | Publication Date |
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| CN210462177U true CN210462177U (en) | 2020-05-05 |
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| CN201921531908.XU Active CN210462177U (en) | 2019-09-15 | 2019-09-15 | Multilayer core material supported by woven fiber framework and vacuum insulation panel prepared by multilayer core material |
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