A nano-ceramic microsphere-based thermal insulation system

Abstract

The utility model relates to a kind of based on nanometer ceramic microbead's heat preservation and insulation system, belong to heat preservation and insulation technical field.The based on nanometer ceramic microbead's heat preservation and insulation system, comprising: heat preservation board, the heat preservation board is sequentially provided with base interface layer, framework, nanometer ceramic microbead function layer, transition layer and veneer from inside to outside;Nanometer ceramic microbead function layer includes the big particle size ceramic microbead of the particle size gradient setting, medium particle size ceramic microbead and small particle size ceramic microbead, the big particle size ceramic microbead, medium particle size ceramic microbead and small particle size ceramic microbead are closely packed, nanometer ceramic microbead function layer is set, microbead is made with nanometer level metal oxide, internal closed gas, through the triple mechanism of blocking solid heat conduction, inhibiting gas convection and reflecting infrared radiation to block heat transfer.The big particle size ceramic microbead, medium particle size ceramic microbead and small particle size gradient setting ceramic microbead are closely packed, reduce porosity, further improve heat preservation and insulation effect.

Description

Technical Field

[0001] This utility model relates to the field of thermal insulation technology, and in particular to a thermal insulation system based on nano-ceramic microspheres. Background Technology

[0002] In the field of building and industrial energy conservation, thermal insulation materials are crucial for reducing energy consumption.

[0003] Current mainstream technologies face the following key bottlenecks. Organic insulation boards have a high thermal conductivity of 0.035–0.045 W / m·K, requiring a thickness of ≥80mm to meet energy-saving standards, thus encroaching on the effective space of buildings; inorganic materials, on the other hand, have a thermal conductivity that spikes by more than 50% in humid environments and are prone to pulverization and detachment after freeze-thaw cycles. Utility Model Content

[0004] Therefore, it is necessary to provide a thermal insulation system based on nano-ceramic microspheres to address the problems of high thermal conductivity and easy pulverization and detachment after freeze-thaw cycles.

[0005] A thermal insulation system based on nano-ceramic microspheres includes: an insulation board, wherein the insulation board is provided with a base interface layer, a skeleton layer, a nano-ceramic microsphere functional layer, a transition layer and a decorative layer from the inside to the outside; the nano-ceramic microsphere functional layer includes large-diameter ceramic microspheres, medium-diameter ceramic microspheres and small-diameter ceramic microspheres arranged in a particle size gradient, wherein the large-diameter ceramic microspheres, medium-diameter ceramic microspheres and small-diameter ceramic microspheres are densely packed.

[0006] In one embodiment, the gaps between the large-diameter ceramic microspheres, medium-diameter ceramic microspheres and small-diameter ceramic microspheres are filled with aerogel.

[0007] In one embodiment, the skeleton layer includes an outer mesh fabric and an inner mesh fabric, the outer mesh fabric being disposed close to the base interface layer, and both the outer mesh fabric and the inner mesh fabric being made of glass fiber mesh fabric.

[0008] In one embodiment, the transition layer is configured as an elastic polyurethane layer.

[0009] In one embodiment, the finishing layer is made of fluorocarbon resin.

[0010] In one embodiment, the outer mesh fabric has a basis weight of 160 g / m², the inner mesh fabric has a basis weight of 80 g / m², and the two mesh fabrics are bonded together by an epoxy-modified acrylic adhesive.

[0011] In one embodiment, the large-diameter ceramic microspheres have a particle size of 8-10 μm, the medium-diameter ceramic microspheres have a particle size of 5-7 μm, and the small-diameter ceramic microspheres have a particle size of 2-4 μm, and the volume ratio of the three is large-diameter ceramic microspheres: medium-diameter ceramic microspheres: small-diameter ceramic microspheres = 1:5:4.

[0012] In one embodiment, the insulation board has a polymer mortar edging strip around its perimeter, and this area is not filled with ceramic microspheres.

[0013] Beneficial effects A functional layer of nano-ceramic microspheres is incorporated. These microspheres are made of nanoscale metal oxides and contain enclosed gas. They block heat transfer through a triple mechanism: blocking solid-state heat conduction, inhibiting gas convection, and reflecting infrared radiation. A gradient arrangement of large, medium, and small-sized ceramic microspheres achieves close packing, reduces porosity, and further enhances thermal insulation performance. Aerogel fills the gaps between microspheres to further reduce radiative heat transfer. The skeleton layer uses a double-layer mesh fabric to improve impact resistance. An elastic polyurethane transition layer is added between the functional layer and the decorative layer to absorb temperature difference deformation stress. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the functional layer of nano-ceramic microspheres of this utility model; Figure 3 For the present utility model Figure 2 Enlarged view of the structure at point A in the middle; Figure 4 This is a schematic diagram of the layer separation structure of this utility model.

[0016] Figure label: 100, Basic interface layer; 200, Skeleton layer; 210, Outer mesh fabric; 220, Inner mesh fabric; 300, Nano-ceramic microsphere functional layer; 310, Large-diameter ceramic microspheres; 311, Medium-diameter ceramic microspheres; 312, Small-diameter ceramic microspheres; 400, Transition layer; 500, Finishing layer. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0019] The following is combined Figures 1-4 This invention describes a thermal insulation system based on nano-ceramic microspheres.

[0020] In one embodiment, a thermal insulation system based on nano-ceramic microspheres includes: an insulation board, which is provided with a base interface layer 100, a skeleton layer 200, a nano-ceramic microsphere functional layer 300, a transition layer 400, and a decorative layer 500 from the inside out; the nano-ceramic microsphere functional layer 300 includes large-diameter ceramic microspheres 310, medium-diameter ceramic microspheres 311, and small-diameter ceramic microspheres 312 arranged in a particle size gradient, with the large-diameter ceramic microspheres 310, medium-diameter ceramic microspheres 311, and small-diameter ceramic microspheres 312 closely packed. The particle size of the large-diameter ceramic microspheres 310 is 8-10 μm, the particle size of the medium-diameter ceramic microspheres 311 is 5-7 μm, and the particle size of the small-diameter ceramic microspheres 312 is 2-4 μm, and the volume ratio of the three is large-diameter ceramic microspheres 310: medium-diameter ceramic microspheres 311: small-diameter ceramic microspheres 312 = 1:5:4.

[0021] In this embodiment, the ceramic microspheres are arranged with a size gradient to achieve close packing. The microspheres are pre-coated with a silane coupling agent to enhance the interfacial bonding with the polymer matrix. The microspheres are made of nanoscale metal oxides such as alumina and silicon oxide, with an internal enclosed gas thermal conductivity of only 0.024 W / (m·K). They block heat transfer through a triple mechanism of blocking solid heat conduction, inhibiting gas convection, and reflecting infrared radiation. The system consists of a basic interface layer 100, a framework layer 200, a nano-ceramic microsphere functional layer 300, a transition layer 400, and a finishing layer 500. The functional layer is enhanced with a silane coupling agent to improve adhesion and thermal insulation performance. The basic interface layer 100 is an epoxy resin-based penetrating primer with a thickness of 0.3 mm.

[0022] like Figure 3 and Figure 4 As shown, the gaps between large-diameter ceramic microspheres 310, medium-diameter ceramic microspheres 311 and small-diameter ceramic microspheres 312 are filled with aerogel.

[0023] In this embodiment, the aerogel is silica aerogel microparticles, with a doping ratio accounting for 5%-8% of the total mass of the functional layer, and the surface is treated with hydrophobic modification. The aerogel consists of a three-dimensional network of nano-sized silica particles with pore sizes smaller than the mean free path of air molecules, which inhibits gas heat conduction and convection, improves hydrophobicity and radiation reflectivity, and thus enhances the thermal insulation effect.

[0024] like Figure 4 As shown, the skeleton layer 200 includes an outer mesh fabric 210 and an inner mesh fabric 220. The outer mesh fabric 210 is positioned close to the base interface layer 100, and both the outer mesh fabric 210 and the inner mesh fabric 220 are made of glass fiber mesh fabric. The basis weight of the outer mesh fabric 210 is 160 g / m², and the basis weight of the inner mesh fabric 220 is 80 g / m². The two mesh fabrics are bonded together with an epoxy-modified acrylic adhesive.

[0025] In this embodiment, the skeleton uses a double-layer mesh fabric with a thickness of 1-1.5mm to improve impact resistance and balance tensile strength and flexibility. The outer layer is impact-resistant, while the inner layer provides stress cushioning.

[0026] like Figure 1 As shown, the transition layer 400 is a flexible polyurethane layer. The finishing layer 500 is made of fluorocarbon resin.

[0027] In this embodiment, the elastic polyurethane layer is 0.5mm thick, absorbing thermal deformation stress and ±5mm base layer deformation stress, thus solving the cracking problems of irregular wall surfaces and arched ceilings. A titanium dioxide photocatalyst with a dosage of 3-5wt% is added to the finishing layer 500, providing photocatalytic self-cleaning functionality.

[0028] like Figure 1 As shown, the insulation board has a polymer mortar edging strip around its perimeter, and this area is not filled with ceramic microspheres.

[0029] In this embodiment, a polymer mortar edge band is provided to prevent edge breakage and microbeads from falling off the cut edge during anchoring installation.

[0030] Working principle: Large-diameter ceramic microspheres 310 form the framework, while medium-diameter ceramic microspheres 311 and small-diameter ceramic microspheres 312 fill the gaps, forming a honeycomb-like dense stacked structure that significantly extends the solid-state heat conduction path. The gaps between the microspheres are filled with hydrophobic silica aerogel, whose nanoporous structure divides air molecules into isolated chambers, inhibiting the thermal motion of gas molecules. The surface of the microspheres is coated with nano-alumina / zirconia, which reflects the entire spectrum of solar radiation. This reduces the surface heating rate, blocks heat loss from the interior, and improves thermal insulation performance.

[0031] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0032] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A thermal insulation system based on nano-ceramic microspheres, characterized in that, include: The insulation board is provided with a base interface layer (100), a skeleton layer (200), a nano-ceramic microsphere functional layer (300), a transition layer (400) and a decorative layer (500) from the inside to the outside. The nano-ceramic microsphere functional layer (300) includes large-diameter ceramic microspheres (310), medium-diameter ceramic microspheres (311), and small-diameter ceramic microspheres (312) arranged in a particle size gradient, and the large-diameter ceramic microspheres (310), medium-diameter ceramic microspheres (311), and small-diameter ceramic microspheres (312) are tightly packed together.

2. The thermal insulation system based on nano-ceramic microspheres according to claim 1, characterized in that, Aerogel is filled in the gaps between the large-diameter ceramic microspheres (310), medium-diameter ceramic microspheres (311), and small-diameter ceramic microspheres (312).

3. The thermal insulation system based on nano-ceramic microspheres according to claim 1, characterized in that, The skeleton layer (200) includes an outer mesh fabric (210) and an inner mesh fabric (220). The outer mesh fabric (210) is disposed close to the base interface layer (100), and both the outer mesh fabric (210) and the inner mesh fabric (220) are made of glass fiber mesh fabric.

4. The thermal insulation system based on nano-ceramic microspheres according to claim 1, characterized in that, The transition layer (400) is configured as an elastic polyurethane layer.

5. The thermal insulation system based on nano-ceramic microspheres according to claim 1, characterized in that, The finishing layer (500) is made of fluorocarbon resin.

6. The thermal insulation system based on nano-ceramic microspheres according to claim 3, characterized in that, The outer mesh fabric (210) has a basis weight of 160 g / m², and the inner mesh fabric (220) has a basis weight of 80 g / m². The two mesh fabrics are bonded together by an epoxy-modified acrylic adhesive.

7. The thermal insulation system based on nano-ceramic microspheres according to claim 1, characterized in that, The large-diameter ceramic microspheres (310) have a particle size of 8-10 μm, the medium-diameter ceramic microspheres (311) have a particle size of 5-7 μm, and the small-diameter ceramic microspheres (312) have a particle size of 2-4 μm. The volume ratio of the three is large-diameter ceramic microspheres (310): medium-diameter ceramic microspheres (311): small-diameter ceramic microspheres (312) = 1:5:

4.

8. The thermal insulation system based on nano-ceramic microspheres according to claim 1, characterized in that, The insulation board has a polymer mortar edging strip around its perimeter, and this area is not filled with ceramic microspheres.

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