WO2020134401A1

WO2020134401A1 - Temperature-reducing foam liner

Info

Publication number: WO2020134401A1
Application number: PCT/CN2019/111926
Authority: WO
Inventors: 刘若鹏; 栾琳; 胡宇; 刘光烜; 孙明娟; 李朝兴; 桂美进
Original assignee: 深圳光启高端装备技术研发有限公司; 深圳光启超材料技术有限公司
Priority date: 2018-12-25
Filing date: 2019-10-18
Publication date: 2020-07-02

Abstract

A temperature-reducing foam liner, comprising: a pad (1), foam (2), a plastic box (3) and phase change material (4); the pad (1) being disposed above the foam (2), the foam (2) being provided with a trough structure therein, the trough structure being provided with a plastic box (3) matched to same, and phase change material (4) being disposed in the plastic box (3). The temperature-reducing foam liner further enhances heat-absorption capabilities, has a good temperature-reducing effect, is simple to produce, is low-cost, and does not require additional structural design. The temperature-reducing foam liner improves comfort, enhances user utilizational satisfaction, and may be widely applied in fields such as helmets, smart wearable devices, aviation and aerospace, daily-use household products, etc. With regard to daily-use household products, same may be used in producing mattresses, pillows, seat cushions, etc.; with regard to aviation and aerospace, same may be used for producing temperature-reducing clothing, etc.

Description

Cooling foam lining

Technical field

The utility model relates to the technical field of cooling lining, in particular to a cooling foam lining.

Background technique

Conventional head-mounted equipment such as helmets are generally composed of three main structures, a helmet shell, cushioning foam, and an inner lining. However, for some tactical helmets, in order to reduce weight and facilitate portability, cushion foam and liner are integrated to form a block-shaped liner. In this way, according to the wearer's own needs, these block linings can be placed in the helmet in a suitable position to adapt to the shape of his head. At the same time, these liners are easy to disassemble, easy to clean and replace.

technical problem

Existing helmets generally have the problem of poor wearing comfort. The main problem is that the internal ventilation of the helmet is poor, and the heat of the head cannot be dissipated in time, resulting in a serious sweating problem for the wearer. Therefore, improving the wearing comfort of the helmet is a very important issue.

Technical solution

The technical problem to be solved by the utility model is to provide a cooling foam inner liner, which can further improve the heat absorption capacity and the cooling effect is better; the preparation is simple, the cost is low, and no additional structural design is needed. The cooling foam lining provided by the utility model improves the comfort and the user's satisfaction, and can be widely used in the fields of helmets, smart wearable equipment, aerospace, daily household furniture and so on. For example, in daily households, it can be made into mattresses, pillows, cushions, etc.; in aerospace, it can be made into cooling clothes, etc.

To solve the above technical problem, on the one hand, an embodiment of the present invention provides a cooling foam liner, including: a cushion, a foam, a plastic box, a phase change material, the cushion is disposed on the foam, A groove structure is provided in the foam, and a plastic box matched with the groove structure is provided in the foam structure, and a phase change material is provided in the plastic box.

Preferably, the phase change material is any one or more of phase change microcapsules, stereotyped phase change material, organic phase change material, and inorganic phase change material.

Preferably, the organic phase change material is any one or more of paraffin, ester, and polyol.

Preferably, the inorganic phase change material is any one or more of crystalline hydrated salt, molten salt, and metal alloy.

Preferably, a gel layer is provided on the pad.

Preferably, the gel layer is any one or a mixture of cross-linked polyacrylic acid, hydroxyethyl cellulose, polyvinyl alcohol, pectin, and hyaluronic gum.

Preferably, the gel layer further includes a preservative.

Preferably, the gel layer further includes a thermally conductive material.

Preferably, the thermally conductive material is any one or a mixture of graphite, carbon nanotubes, graphene, and aluminum powder.

Preferably, the pad includes a sponge layer.

On the other hand, an embodiment of the present invention provides a cooling foam liner, including: a sponge layer, a gel layer, and a breathable layer stacked in sequence, the gel layer bonds the sponge layer and the breathable layer, The gel layer is provided with a phase change material.

Preferably, the breathable layer is any one or a mixture of Coolmax fabric, Lycra fabric, metal fiber-doped nylon, metal fiber-doped spandex, ice silk fabric, and silk fabric.

Preferably, the gel layer further includes a preservative.

Preferably, the gel layer further includes a thermally conductive material.

Preferably, the addition amount of the phase change material is 5%-30% of the weight ratio of the gel material of the gel layer.

Beneficial effect

Compared with the prior art, the above technical solution has the following advantages: further improve the heat absorption capacity, the cooling effect is better; the preparation is simple, the cost is low, and no additional structural design is needed. The cooling foam lining provided by the utility model improves the comfort and the user's satisfaction, and can be widely used in the fields of helmets, smart wearable equipment, aerospace, daily household furniture and so on. For example, in daily households, it can be made into mattresses, pillows, cushions, etc.; in aerospace, it can be made into cooling clothes, etc.

BRIEF DESCRIPTION

In order to more clearly explain the technical solutions in the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some implementations of the present invention For example, for those of ordinary skill in the art, without paying creative labor, other drawings can be obtained based on these drawings.

Figure 1 is a schematic diagram of the first structure of the cooling foam liner of the present invention.

FIG. 2 is a schematic structural view of the foam 2 with a groove structure in FIG. 1.

FIG. 3 is a schematic diagram of the three-dimensional structure with the pad 1 in FIG. 1.

4 is a schematic diagram of the second structure of the cooling foam liner of the present invention.

In the figure, 1-pad, 2-foam, 3-plastic box, 4-phase change material, 5-gel layer, 6-sponge layer, 7-breathable layer.

Embodiments of the invention

The technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of them. example. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

Figure 1 is a schematic diagram of the first structure of the cooling foam liner of the present invention. FIG. 2 is a schematic structural view of the foam 2 with a groove structure in FIG. 1. FIG. 3 is a schematic diagram of the three-dimensional structure with the pad 1 in FIG. 1. As shown in FIGS. 1, 2, and 3, a cooling foam liner includes: a cushion 1, a foam 2, a plastic box 3, a phase change material 4, and the cushion 1 is provided on the foam 2 A groove structure is provided in the foam 2, and a plastic box 3 matched with the groove structure is provided in the groove structure, and a phase change material 4 is provided in the plastic box 3.

A phase change material is a material that can perform reversible energy storage and release. It can undergo reversible energy absorption and release according to changes in ambient temperature. Therefore, it can be further added to the gel material to absorb the heat radiated from the human head. The phase change material adopts existing materials on the market, and the phase change material 4 is any one or more of a mixture of phase change microcapsules, stereotyped phase change material, organic phase change material, and inorganic phase change material. The organic phase change material is any one or more of paraffin, ester and polyol. The inorganic phase change material is any one or more of crystalline hydrated salt, molten salt, and metal alloy.

The pad 1 is provided with a gel layer. The gel layer 5 is any one or a mixture of cross-linked polyacrylic acid, hydroxyethyl cellulose, polyvinyl alcohol, pectin, and hyaluronan.

In order to prevent the gel layer 5 from deteriorating, a preservative may be added to the gel layer 5. The added amount is 0.5%-2% (weight ratio) of the gel material.

In order to enhance thermal conductivity, the gel layer 5 may also include a thermally conductive material. The thermal conductive material is any one or a mixture of graphite, carbon nanotubes, graphene, and aluminum powder.

In order to further increase the comfort of the inner lining, the cushion 1 may also include a sponge layer, such as but not limited to the following materials: memory sponge, ordinary sponge, latex, etc.

The manufacturing method of the cooling foam lining is:

(1) Preparation of foam with grooves of specific shapes;

(2) Prepare a plastic box that matches the shape of the foam groove;

(3) After encapsulating the phase change material in a plastic box, fill it with foam;

(4) Cover the foam with a cooling pad.

The foam used for preparing the substrate is one of foamed materials such as foamed polyethylene, foamed polypropylene or foamed polyurethane material.

The preparation of plastic boxes generally adopts a blister process, and the shape can be a rectangular parallelepiped, a square, a cylinder, etc. The material is polypropylene, polyvinyl chloride or polyethylene, etc. After the phase change material is loaded, it is encapsulated by means of hot pressing.

Example one

Preparation of blister box packaging phase change materials:

(1) Adopt blister process to prepare PVC blister box;

(2) Use the existing solid-liquid phase change material in the market, add it to the blister box, and the volume is two-thirds of the solvent of the blister box. The phase change temperature of the phase change material is selected according to the temperature of the phase change material in the cooling pad, which is generally 1-3°C lower than the phase change temperature of the phase change material in the pad. Then use hot pressing to seal the blister box;

(3) Pack the cooling pad above the blister box.

Example 2

Preparation of blister box packaging phase change materials:

(1) Adopt blister process to prepare PVC blister box;

(2) Select the existing solid-solid phase change material on the market, add 5% of the graphene material relative to the mass of the phase change material, add it to the blister box, and add two-thirds of the volume of the blister box solvent. The phase change temperature of the phase change material is selected according to the temperature of the phase change material in the cooling pad, which is generally 1-3°C lower than the phase change temperature of the phase change material in the pad. Then use hot pressing to seal the blister box;

(3) Pack the cooling pad above the blister box.

The specific implementation method is similar to that in Embodiment 1, except that the phase change material uses a solid-solid phase change material, and at the same time, in order to enhance thermal conductivity, 5% graphene material relative to the mass of the phase change material is added.

Example Three

Preparation of blister box packaging phase change materials:

(1) Adopt blister process to prepare PVC blister box;

(2) Use the existing smoothie phase change material available in the market, add it to the blister box, and add two-thirds of the volume of the blister box solvent. The phase change temperature of the phase change material is selected according to the temperature of the phase change material in the cooling pad, which is generally 1-3°C lower than the phase change temperature of the phase change material in the pad. Then use hot pressing to seal the blister box;

(3) Pack the cooling pad above the blister box.

The specific implementation method is similar to that in Embodiment 1, except that the phase change material uses a smoothie material.

It can be seen that the cooling pad can absorb the heat emitted by the human body in time because of the gel pad mixed with the phase change energy storage material; the plastic box is a container for the phase change material; the phase change material can absorb the heat of the cooling pad; the foam Can provide a buffering effect.

4 is a schematic diagram of the second structure of the cooling foam liner of the present invention. As shown in FIG. 4, a cooling lining system includes: a sponge layer 6, a gel layer 5, and a breathable layer 7 stacked in sequence, the gel layer 5 bonds the sponge layer 6 and the breathable layer 7, The gel layer 5 is provided with a phase change material 4. The addition amount of the phase change material 4 is 5%-30% of the weight ratio of the gel material of the gel layer 5. Gel is a cross-linked material with a lot of moisture, which can quickly provide a cooling sensation.

The breathable layer 7 is any one or a mixture of Coolmax fabric, Lycra fabric, metal fiber-doped nylon, metal fiber-doped spandex, ice silk fabric, and silk fabric.

The gel layer 5 is any one or a mixture of cross-linked polyacrylic acid, hydroxyethyl cellulose, polyvinyl alcohol, pectin, and hyaluronic gum.

The phase change material 4 is a material capable of reversible energy storage and release, which can undergo reversible energy absorption and release according to changes in the ambient temperature. Therefore, it can be further added to the gel material to absorb the heat radiated from the human head. The phase change material adopts existing materials on the market, and the phase change material is any one or more of a mixture of phase change microcapsules, stereotyped phase change material, organic phase change material, and inorganic phase change material. The organic phase change material is any one or more of paraffin, ester, and polyol. The inorganic phase change material is any one or more of crystalline hydrated salt, molten salt, and metal alloy. The phase change temperature of the phase change material can be selected within the range of 25-37°C as required. The addition amount of the phase change material is 5%-30% (weight ratio) of the gel material.

In order to prevent the gel material from deteriorating, some preservatives can be added to the gel in an amount of 0.5%-2% (weight ratio) of the gel material.

In order to enhance thermal conductivity, the gel layer 5 may also include a thermally conductive material. The thermally conductive material is any one or a mixture of graphite, carbon nanotubes, graphene, and aluminum powder. The amount of heat conductive material added is 1%-10% (weight ratio) of the phase change material.

In order to further increase the comfort of the inner lining, the material of the sponge layer 6 includes but is not limited to the following materials: memory sponge, ordinary sponge, latex, and the like. In addition to satisfying sweat absorption, breathability, and good thermal conductivity, the breathable layer also needs to meet the requirements of antibacterial, deodorant, fabric color, and sweat stain fastness. In addition, the breathable layer fabric can also be mesh cloth to further ensure breathability. In order to ensure the processing performance, the elasticity of the breathable fabric should not be too large.

Example 4

The preparation method of the gel layer 5 is as follows: hydroxyethyl cellulose is selected as the material for preparing the gel, the phase change material is a phase change microcapsule with a phase change temperature of 27°C, and the thermal conductive material is graphene fine powder. Mix the above materials according to the ratio of hydroxyethyl cellulose: preservative: phase change material: graphene micropowder: water=10:0.1:1:0.1 (weight ratio), put it in a mold of the desired shape, and let it stand for 2 In about hours, the gel layer material was obtained.

The sponge layer is made of memory foam, and the cloth is made of coolmax.

The above three materials are combined by hot pressing with a specific mold to obtain a cooling lining.

Example 5

Polyvinyl alcohol is selected as the material for preparing the gel, the phase change material uses phase change microcapsules with a phase change temperature of 27°C, and the thermal conductive material uses graphene fine powder. Mix the above materials according to the ratio of hydroxyethyl cellulose: preservative: phase change material: graphene micropowder: water=10:0.1:1:0.1 (weight ratio), put it in a mold of the desired shape, and let it stand for 2 In about hours, the gel layer material was obtained.

The sponge layer is made of memory foam, and the cloth is made of coolmax.

The implementation method is similar to that in Example 1, except that polyvinyl alcohol is selected as the material for preparing the gel.

Example Six

Cross-linked polyacrylic acid is selected as the material for preparing the gel. The phase change material uses phase change microcapsules with a phase change temperature of 27°C, and the thermal conductive material uses graphene fine powder. Mix the above materials according to the ratio of hydroxyethylcellulose: preservative: phase change material: molten salt: water = 10:0.1:1:0.1 (weight ratio), put it into a mold of the desired shape, and leave it for 2 pieces Within about hours, the gel layer material is available.

The sponge layer is made of memory foam, and the cloth is made of coolmax.

The specific implementation method is similar to Example 1, except that cross-linked polyacrylic acid is selected as the material for preparing the gel, and the phase change material is a molten salt with a phase change temperature of 35°C.

This shows that the cooling lining system has the following advantages:

1. The cooling lining is made of three layers of breathable layer, gel layer and sponge layer. The prepared cooling lining is sweat-absorbing, breathable and comfortable, and it also has a cooling feeling. The preparation process of the cooling lining is simple and the temperature is reduced. The endothermic effect is obvious, with good comfort, which helps to improve the wearing comfort.

2. The core part of the cooling lining is the gel layer. The material of this layer can be used not only for the cooling lining, but also for other areas that are in contact with the human body and need to be cooled.

Industrial applicability

It can be seen from the above description that the use of the cooling foam liner according to the present invention is simple to prepare and low in cost, without additional structural design, which can further improve the heat absorption capacity and the cooling effect is better; it improves comfort and improves the user's use Satisfaction can be widely used in helmets, smart wearable devices, aerospace, household furniture and other fields. For example, in daily households, it can be made into mattresses, pillows, cushions, etc.; in aerospace, it can be made into cooling clothes, etc.

The embodiments of the present utility model have been described in detail above, and specific examples have been used in this article to explain the principles and implementation of the present utility model. The descriptions of the above embodiments are only used to help understand the methods and core ideas of the present utility model; At the same time, for those of ordinary skill in the art, according to the idea of the utility model, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as a limitation of the utility model.

Claims

A cooling foam liner, characterized in that it includes: a gasket (1), a foam (2), a plastic box (3), a phase change material (4), and the gasket (1) is provided on the foam ( 2) Above, a groove structure is provided in the foam (2), and a plastic box (3) matched with the groove structure is provided in the groove structure, and a phase change material is provided in the plastic box (3) ( 4).
The cooling foam lining according to claim 1, characterized in that the phase change material (4) is any one of phase change microcapsules, shaped phase change materials, organic phase change materials, inorganic phase change materials or Various mixing.
The cooling foam liner according to claim 2, wherein the organic phase change material is any one or more of paraffin, ester, and polyol.
The cooling foam lining according to claim 2, wherein the inorganic phase change material is any one or more of a crystalline hydrated salt, a molten salt, and a metal alloy.
The cooling foam inner lining according to claim 1, characterized in that a gel layer (5) is provided on the cushion (1).
The cooling foam lining according to claim 5, characterized in that the gel layer (5) is any one of cross-linked polyacrylic acid, hydroxyethyl cellulose, polyvinyl alcohol, pectin, hyaluronic gum One or more kinds of mixture.
The cooling foam liner according to claim 5, characterized in that the gel layer (5) further comprises a preservative.
The cooling foam liner according to claim 5, characterized in that the gel layer (5) further comprises a thermally conductive material.
The cooling foam liner according to claim 8, wherein the thermally conductive material is any one or a mixture of graphite, carbon nanotubes, graphene, and aluminum powder.
The cooling foam inner lining according to any one of claims 1 to 9, wherein the cushion (1) includes a sponge layer (6).
A cooling foam inner liner, characterized by comprising: a sponge layer (6), a gel layer (5) and a breathable layer (7) stacked in sequence, the gel layer (5) bonding the sponge layer (6) and the gas permeable layer (7), the gel layer (5) is provided with a phase change material (4).
The cooling foam lining according to claim 11, wherein the breathable layer (7) is Coolmax fabric, Lycra fabric, metal fiber-doped nylon, metal fiber-doped spandex, ice silk fabric, silk fabric Any one or more of them.
The cooling foam lining according to claim 11, characterized in that the gel layer (5) is any one of cross-linked polyacrylic acid, hydroxyethyl cellulose, polyvinyl alcohol, pectin, hyaluronic gum One or more kinds of mixture.
The cooling foam lining according to claim 11, characterized in that the phase change material (4) is any one of phase change microcapsules, shaped phase change materials, organic phase change materials, inorganic phase change materials or Various mixing.
The cooling foam inner lining according to claim 11, characterized in that the gel layer (5) further comprises a preservative.
The cooling foam inner lining according to claim 11, characterized in that the gel layer (5) further comprises a thermally conductive material.
The cooling foam inner lining according to claim 11, characterized in that the addition amount of the phase change material (4) is 5%-30% of the gel material weight ratio of the gel layer (5).
The cooling foam liner according to claim 14, wherein the organic phase change material is any one or more of paraffin, ester, and polyol.
The cooling foam liner according to claim 14, wherein the inorganic phase change material is any one or more of a crystalline hydrated salt, a molten salt, and a metal alloy.
The cooling foam lining according to claim 16, wherein the thermally conductive material is any one or a mixture of graphite, carbon nanotubes, graphene, and aluminum powder.

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