Aerogel flocculus with high crow value and high heat preservation rate and quilt core

Abstract

The utility model belongs to the field of home textiles, and particularly relates to an aerogel flocculus with a high crow value and a high heat preservation rate and a quilt core. The aerogel flocculus comprises a surface layer, a middle layer and a lower layer which are arranged from top to bottom, wherein the surface layer is formed by weaving aerogel fibers and superfine fibers; the middle layer is formed by weaving aerogel fibers and hollow fibers; the lower layer is formed by weaving aerogel fibers and superfine fibers. The aerogel flocculus is light in weight (the gram weight is 70-380 g / m < 2 >), the Crow number reaches 3.2-4.2 clo, the heat preservation rate reaches 65-85%, the aerogel flocculus has the air permeability, the antibacterial function and the ultraviolet-proof function, and the problems that a traditional quilt core is thick, heavy, prone to hardening and the like are solved.

Description

Technical Field

[0001] This utility model belongs to the field of home textiles, specifically relating to an aerogel wadding with high clo value and high heat retention rate, and a quilt core. Background Technology

[0002] In recent years, with the improvement of living standards, consumers have significantly increased their requirements for sleep quality. As a core category of home textiles, the functionality, comfort, and durability of comforters have become the focus of market attention. Traditional comforter filling materials are mainly divided into two categories: chemical fiber materials and natural materials. However, both have obvious technical limitations and cannot meet the needs of modern consumers for multifunctional composite products that are "lightweight, highly insulating, breathable, washable, and durable."

[0003] The main drawbacks of existing technologies are as follows:

[0004] (a) Limitations of synthetic fiber materials:

[0005] While common synthetic fibers (such as polyester) are inexpensive and easy to care for, their poor moisture absorption can lead to a stuffy feeling, especially in humid environments where comfort is significantly reduced. Furthermore, the insulation performance of traditional synthetic fibers relies on increasing thickness, resulting in bulky blankets that not only affect the user experience but also limit improvements in their Clo value (CLO, a measure of insulation performance). Although some modified synthetic fibers (such as hollow fibers) have improved insulation performance to some extent, their overall performance still cannot compare to high-end natural materials.

[0006] (II) Defects of Natural Materials:

[0007] While natural materials such as down, silk, and cotton possess excellent moisture-wicking and warmth-retaining properties, they also present several problems. For example:

[0008] (1) Down: It is expensive, easy to leak down, easy to clump after washing, and there is a risk of allergies;

[0009] (2) Silk: High maintenance cost, requires professional care, difficult to wash, and prone to clumping after long-term use;

[0010] (3) Cotton: It tends to clump together after absorbing moisture, which reduces its heat retention performance and makes it bulky and difficult to store.

[0011] In addition, the durability and environmental friendliness of natural materials also face challenges. For example, the harvesting of down may involve animal welfare issues, while cotton cultivation requires a large amount of water resources.

[0012] (iii) Functional deficiencies:

[0013] Existing comforter filling materials also have significant shortcomings in terms of functional expansion. For example:

[0014] (1) It lacks long-lasting antibacterial properties and is prone to the growth of bacteria and mites;

[0015] (2) Insufficient UV resistance; it is prone to aging after washing and exposure to sunlight.

[0016] (3) Poor structural stability, and it is prone to delamination or deformation after long-term use.

[0017] In summary, the current technical challenges in materials mainly lie in:

[0018] (1) The contradiction between lightweight and high heat insulation: Natural materials are lightweight but prone to hardening, while chemical fiber materials need to be thickened to improve heat insulation;

[0019] (2) The contradiction between breathability and durability: Highly breathable materials often have a loose structure and are easily deformed or delaminated;

[0020] (3) The contradiction between functionality and cost: Multifunctional composite materials are expensive and difficult to popularize.

[0021] Therefore, there is an urgent need to develop a new type of quilt filling material that can balance lightweight, high thermal insulation, breathability, washability, and multifunctionality, while overcoming the technical shortcomings of existing materials. Based on this, this invention proposes a high-clo value, high-thermal-insulation aerogel sheet, achieving a performance breakthrough through multi-layer composite structure design and optimized fiber combination. Utility Model Content

[0022] To address the problems existing in the prior art, this utility model provides an aerogel sheet with high clo value and high thermal insulation rate. The aerogel sheet comprises a surface layer, a middle layer, and a bottom layer arranged from top to bottom, wherein:

[0023] The surface layer is woven from aerogel fibers and microfibers;

[0024] The middle layer is woven from aerogel fibers and hollow fibers;

[0025] The lower layer is woven from aerogel fibers and microfibers.

[0026] Preferably, the aerogel fiber is a 1.5D aerogel fiber;

[0027] And / or, the microfiber is a 0.8D microfiber;

[0028] And / or, the hollow fiber is a 3D hollow fiber.

[0029] To facilitate understanding of this utility model, the fiber raw material of this utility model is described as follows:

[0030] Aerogel fiber: Aerogel fiber typically uses polyester (PET) or polyimide (PI) chemical fibers as the base material. Through a sol-gel confined transition (SGCT) strategy, high-purity silica aerogel (purity ≥99%) is uniformly dispersed within the fiber, forming a hierarchical porous structure to improve thermal insulation efficiency. Aerogel fiber products from Shandong Qilu Chemical Textile Co., Ltd. are recommended. This invention uses a 1.5D (denier) specification. Note: Denier (D) refers to the weight in grams of 9000m of fiber at standard moisture regain. Denier is a unit of measurement for fiber fineness.

[0031] Microfiber: The microfiber selected in this invention has a specification of 0.8D. It can be the FR262 fiber produced by Sinopec Yizheng Chemical Fiber Co., Ltd., with a specification of 0.89dtex*38mm. It has spinnability and high strength.

[0032] Hollow fiber: Hollow fiber refers to fiber with fine tubular cavities along its axial direction. The ultrafine fiber selected in this invention is 3D. It can be ZK604 fiber produced by Sinopec Yizheng Chemical Fiber Co., Ltd., with a specification of 3.33 dtex * 64 mm, or ZK618 fiber produced by Sinopec Yizheng Chemical Fiber Co., Ltd., with a specification of 3.33 dtex * 64 mm. The first type of three-dimensional crimped hollow fiber uses asymmetric cooling molding technology, resulting in different shrinkage effects due to different appearance structures of the fiber cross-section, forming a "permanent" spiral three-dimensional crimp. The product has high bulkiness, good elasticity, strong warmth retention, good resilience, and good coverage. The second type of three-dimensional crimped hollow fiber, in addition to the advantages of the first type, also has the characteristics of being soft and smooth, having good vacuum rebound, and good filling fullness.

[0033] Preferably, in the surface layer and the lower layer, the aerogel fibers and the microfibers are woven as warp and weft, respectively.

[0034] Preferably, both the outer layer and the lower layer comprise hot-melt fibers; wherein:

[0035] The hot-melt fibers are used to form an adhesive layer to bond the aerogel fibers to the microfibers.

[0036] Preferably, in the middle layer, the aerogel fibers and the hollow fibers are woven as warp and weft, respectively.

[0037] Preferably, in the middle layer, the warp yarns include both positive twist warp yarns and negative twist warp yarns; wherein:

[0038] The positive twist warp and the negative twist warp are wound together to form alternating winding knots and winding holes in sequence;

[0039] The weft thread passes through the winding hole.

[0040] Preferably, the high clo value and high thermal insulation aerogel flocculent sheet further includes an antibacterial layer and an ultraviolet-resistant layer;

[0041] in:

[0042] The antibacterial layer is disposed on the lower side of the lower layer;

[0043] The UV-protective layer is located on the upper side of the surface layer.

[0044] Based on the same technical concept, this utility model provides another type of quilt core, which includes the above-mentioned high clo value and high heat retention aerogel wadding.

[0045] The beneficial effects of this utility model are as follows:

[0046] 1. Superior thermal insulation performance: Through the composite weaving of aerogel fibers and hollow fibers, a multi-layered gradient pore structure is formed, which effectively locks in static air and inhibits heat convection and heat conduction. The Clo value can reach 3.2 to 4.2, and the thermal insulation rate can reach 65% to 85%, which is significantly better than ordinary down comforters (clo value 1.8 to 2.8 Clo, thermal insulation rate 50% to 70%).

[0047] 2. Lightweight and High Loft: Utilizing a combination of 1.5D aerogel fibers and 3D hollow fibers, a weight of only 70–380 g / m² is achieved while maintaining high thermal insulation. 2 It is far lower than that of traditional down comforters (300-500g / m³). 2 This achieves a user experience that is "light as a feather and warm as down".

[0048] 3. Excellent breathability and comfort: The top and bottom layers are made of a blend of microfiber (0.8D) and aerogel fiber, giving the material a delicate touch and good breathability, avoiding stuffiness; the hollow fiber in the middle layer further enhances air circulation, ensuring dryness and comfort.

[0049] 4. Structural stability and durability: Through warp and weft weaving technology and hot melt fiber adhesive layer design, the interlayer bonding force is improved, delamination and fiber migration are prevented, and the tear resistance is high; the middle layer adopts a positive twist / negative twist warp winding structure to enhance compressive resilience and prevent deformation over long-term use.

[0050] 5. Multifunctional expansion: The addition of an antibacterial layer and a UV-protective layer inhibits bacterial growth, extends product life, and meets the needs of outdoor use or short-term sun exposure after washing.

[0051] 6. Environmentally friendly and easy to maintain: Aerogel fiber and chemical fiber materials are washable, quick-drying, and durable, overcoming the problems of high maintenance costs and easy caking of natural materials, which are in line with the modern green home concept.

[0052] In summary, this utility model, through innovative material combination and structural design, solves the technical contradictions of traditional comforter materials, providing consumers with high-end home furnishing products that combine high technology content with a comfortable experience. Attached Figure Description

[0053] To more clearly illustrate the technical solutions in the embodiments of 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0054] Figure 1 This is a schematic diagram of the first type of aerogel flocculent sheet of this utility model.

[0055] Figure 2 It is a schematic diagram of meridians and parallels.

[0056] Figure 3 This is a schematic diagram of twisting the warp and weft threads.

[0057] Figure 4 This is a schematic diagram of the second type of aerogel flocculent sheet of this utility model.

[0058] The attached figures are labeled as follows:

[0059] 1-Top layer; 2-Middle layer; 3-Lower layer; 4-Warp; 41-Straight twist warp; 42-Reverse twist warp; 43-Entanglement knot; 44-Entanglement hole; 5-Weft; 6-Antibacterial layer; 7-UV protection layer. Detailed Implementation

[0060] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0061] In the description of this application, it should be understood that the terms "upper", "lower", "inner", "outer", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0062] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" or "several" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0063] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0064] Example 1

[0065] refer to Figure 1 This embodiment provides an aerogel sheet with high clo value and high thermal insulation rate. The aerogel sheet includes a surface layer 1, a middle layer 2, and a lower layer 3 arranged from top to bottom, wherein:

[0066] The surface layer 1 is woven from aerogel fibers and microfibers;

[0067] The middle layer 2 is woven from aerogel fibers and hollow fibers;

[0068] The lower layer 3 is woven from aerogel fibers and microfibers.

[0069] As an optional implementation, the aerogel fiber is a 1.5D aerogel fiber;

[0070] And / or, the microfiber is a 0.8D microfiber;

[0071] And / or, the hollow fiber is a 3D hollow fiber.

[0072] This design involves blending 1.5D aerogel fibers and 0.8D microfibers in the surface and underlying layers. The former provides a delicate touch, while the latter enhances thermal insulation performance.

[0073] In the middle layer, 1.5D aerogel fibers and 3D hollow fibers are blended and woven together, which can enhance the thermal insulation performance by utilizing the static air layer effect of the hollow structure, while improving the bulkiness and compressive resilience through fiber cross-linking.

[0074] Example 2

[0075] Based on Example 1, and referring to Figure 2 As an optional implementation, in the outer layer 1 and the lower layer 3, the aerogel fiber and the microfiber are woven as warp 4 and weft 5, respectively.

[0076] As an optional implementation, both the outer layer 1 and the lower layer 3 include heat-fused fibers; wherein:

[0077] The hot-melt fibers are used to form an adhesive layer to bond the aerogel fibers to the microfibers.

[0078] Using warp and weft threads for weaving can enhance the uniformity of the structure; at the same time, the introduction of hot melt fibers can melt the fibers after hot rolling to form an adhesive layer, which can improve the interlayer bonding force, prevent delamination and reduce fiber migration, thereby enhancing the overall tear resistance.

[0079] Example 3

[0080] Based on Example 1, and referring to Figure 2 and Figure 3 As an optional implementation, in the middle layer 2, the aerogel fiber and the hollow fiber are woven as warp 4 and weft 5, respectively.

[0081] As an optional implementation, in the middle layer 2, the warp 4 includes a positive twist warp 41 and a negative twist warp 42; wherein:

[0082] The positive twisted warp 41 and the negative twisted warp 42 are wound together to form alternating winding knots 43 and winding holes 44 in sequence;

[0083] The weft thread 4 passes through the winding hole 44.

[0084] This setup, using a cross-laying technique to arrange aerogel fibers and hollow fibers orthogonally, enhances structural uniformity and forms a gradient pore structure. Through multi-scale pore synergistic heat retention, it suppresses heat convection and heat conduction. Furthermore, the forward and reverse twisting weaving methods further enhance the stability of the structure.

[0085] Example 4

[0086] Based on Example 1, and referring to Figure 4 As an optional implementation, the high clo value and high thermal insulation aerogel sheet further includes an antibacterial layer 6 and an ultraviolet-resistant layer 7; wherein:

[0087] The antibacterial layer 6 is disposed on the lower side of the lower layer 3;

[0088] The UV protection layer 7 is disposed on the upper side of the surface layer 1.

[0089] To expand the functionality of aerogel flocculants and meet diverse consumer needs, this embodiment includes an antibacterial layer and a UV-protective layer. The antibacterial layer helps inhibit bacterial growth, while the UV-protective layer ensures that the product will not be affected even after short periods of sun exposure following washing; however, prolonged exposure to direct sunlight should still be avoided.

[0090] Example 5

[0091] Based on Example 1, as an optional implementation, a quilt core is provided, which includes the aforementioned high clo value and high heat retention aerogel wadding.

[0092] Detection example

[0093] Using the testing method of GB / T 35762-2017, the high clo value and high thermal insulation rate aerogel flocculent sheet of the present invention was compared with commercially available products. The results are shown in Table 1.

[0094] Table 1

[0095] index This invention Ordinary down comforter Clo value 3.2～4.2 1.8～2.8 Thermal insulation rate (%) 65～85 50～70 <![CDATA[Grammage (g / m 2 )]]> 70～380 300～500

[0096] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An aerogel sheet with high clo value and high thermal insulation rate, characterized in that, The aerogel flocs comprise, from top to bottom, a surface layer, a middle layer, and a bottom layer, wherein: The surface layer is woven from aerogel fibers and microfibers; The middle layer is woven from aerogel fibers and hollow fibers; The lower layer is woven from aerogel fibers and microfibers.

2. The aerogel flocculent sheet with high clo value and high thermal insulation rate according to claim 1, characterized in that, The aerogel fiber is a 1.5D aerogel fiber; And / or, the microfiber is a 0.8D microfiber; And / or, the hollow fiber is a 3D hollow fiber.

3. The aerogel flocculent sheet with high clo value and high thermal insulation rate according to claim 1, characterized in that, In the outer and lower layers, the aerogel fibers and the microfibers are woven as warp and weft, respectively.

4. The high clo value and high thermal insulation aerogel sheet according to claim 3, characterized in that, Both the outer and lower layers include hot-melt fibers; wherein: The hot-melt fibers are used to form an adhesive layer to bond the aerogel fibers to the microfibers.

5. The aerogel flocculent sheet with high clo value and high thermal insulation rate according to claim 1, characterized in that, In the middle layer, the aerogel fibers and the hollow fibers are woven together as warp and weft, respectively.

6. The aerogel flocculent sheet with high clo value and high thermal insulation rate according to claim 5, characterized in that, In the middle layer, the warp yarns include positive twist warp yarns and negative twist warp yarns; wherein: The positive twist warp and the negative twist warp are wound together to form alternating winding knots and winding holes in sequence; The weft thread passes through the winding hole.

7. The aerogel flocculent sheet with high clo value and high thermal insulation rate according to claim 1, characterized in that, It also includes an antibacterial layer and a UV-protective layer; among which: The antibacterial layer is disposed on the lower side of the lower layer; The UV-protective layer is located on the upper side of the surface layer.

8. A comforter insert, characterized in that, The aerogel flocculent sheet comprising the high Clo value and high thermal insulation rate as described in any one of claims 1 to 7.

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