KR20160009496A - Heat insulation tape, complex sheet having the same and electronic device - Google Patents

Abstract

TECHNICAL FIELD [0001] The present invention relates to a heat insulating tape, a composite sheet having the heat insulating tape, and an electronic apparatus. An insulating filler dispersed in the adhesive layer and blocking heat; And a substrate having the pressure-sensitive adhesive layer formed on one surface or both surfaces thereof.

Description

TECHNICAL FIELD [0001] The present invention relates to a heat insulating tape, a composite sheet having the heat insulating tape,

The present invention relates to a heat insulating tape, and more particularly, to a heat insulating tape capable of suppressing the transfer of heat generated in a heat generating component of an electronic apparatus, a composite sheet having the same, and an electronic apparatus.

Recently, the technology has rapidly developed, and high-performance, light-weighted and shortened electronic devices have appeared on the market and are being commercialized.

If such an electronic device fails to dissipate heat generated internally, excessive heat accumulation may cause image retention, system failure, and shortened product life. In severe cases, it may cause explosion or fire .

Particularly, a portable terminal such as a mobile phone (smart phone) is required to be downsized and lightweight in order to maximize the portability and convenience of the user, and components integrated in smaller and smaller spaces for high performance are mounted. As a result, the parts used in the mobile terminal have higher performance and higher heat generation temperature, and the higher temperature increases the performance of the portable terminal by affecting adjacent components.

On the other hand, a portable terminal such as a mobile phone is often used in contact with a human face in use. Heat generated in the portable terminal is transmitted to the skin, resulting in a low temperature image, It is necessary to lower the heat transmitted to the outside of the mobile terminal to a certain temperature or less.

Various materials have been employed to solve the problem caused by the heat generated by the portable terminal. However, until now, the optimum material having excellent heat insulation and heat dissipation performance has not been developed due to its thin thickness.

On the other hand, Korean Patent Registration No. 10-1034456 discloses a dielectric layer having a composition including pore-forming silica and an organic polymer coated with an organic polymer; A dielectric layer laminated on the lower surface of the dielectric layer and made of at least one selected from the group consisting of a polyethylene terephthalate resin, a polyethylene naphthalate resin, a polybutylene terephthalate resin, a polybutylene naphthalate resin, a polytrimethylene terephthalate resin, a polytrimethylene naphthalate resin, An insulating layer made of at least one selected from the group consisting of phthalate resin and polycyclohexanedimethanol naphthalate polyarylate resin; And a double-sided pressure-sensitive adhesive layer laminated on the upper surface and the lower surface of the dielectric layer and the insulating layer laminate.

However, since the electromagnetic wave shielding and adiabatic tape has a three-layer structure of a dielectric layer, an insulating layer and an adhesive layer, it is not desirable to realize an ultra-thin thickness, It is impossible to solve the heat problem generated in recent high performance portable terminals because there is a limit to insulate the high temperature heat locally generated in the high performance portable terminal.

Korean Patent Registration No. 10-1034456

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a heat insulating tape having an ultra-thin structure capable of efficiently insulating heat generated from a heat generating component of an electronic device, To provide a device.

Another object of the present invention is to provide a heat-insulating tape capable of maximizing the heat insulation efficiency by double-blocking heat by the heat-insulating pillar and the heat insulating layer included in the pressure-sensitive adhesive layer, have.

It is still another object of the present invention to provide a heat insulating tape capable of efficiently insulating heat generated from a heat generating component of an electronic device and maintaining the temperature of the front and rear surfaces of the electronic device below a predetermined temperature, .

It is still another object of the present invention to provide a composite material which can be laminated on a heat insulating tape to have a heat insulating or heat-dissipating function to provide a very thin thickness so as not to increase the thickness of electronic equipment, Sheet.

According to an aspect of the present invention, there is provided a heat insulating tape comprising: an adhesive layer; An insulating filler dispersed in the adhesive layer and blocking heat; And a substrate having the pressure-sensitive adhesive layer formed on one surface or both surfaces thereof.

Here, the substrate may be composed of a heat insulating layer which inhibits heat transfer.

In the adiabatic pressure-sensitive adhesive according to an embodiment of the present invention, the pressure-sensitive adhesive layer may be formed of an acrylic adhesive, an epoxy adhesive, a urethane adhesive, a polyamide adhesive, a polyethylen adhesive, an EVA adhesive, It can be one of PVC system.

In the adiabatic pressure-sensitive adhesive according to an embodiment of the present invention, the pressure-sensitive adhesive layer may be a hot melt adhesive layer sheet in a web state or an inorganic ball state in which thermally adhesive fibers are accumulated and have a plurality of pores.

In the adiabatic adhesive according to an embodiment of the present invention, the adiabatic filler may be a plate-shaped adiabatic filler arranged in the horizontal direction of the adhesive layer so as to block the transmitted heat.

The heat insulating adhesive according to an embodiment of the present invention may further include a spherical heat insulating filler dispersed in the region of the adhesive layer between the plate-like heat insulating fillers and shielding the transmitted heat.

In the adiabatic pressure-sensitive adhesive according to an embodiment of the present invention, the pressure-sensitive adhesive layer is formed by accumulating heat-stickable fibers obtained by electrospinning a thermosensitive material, a thermal spraying solution mixed with the heat-insulating filler and a solvent, The pore size of the web can be reduced.

In the adiabatic pressure-sensitive adhesive according to an embodiment of the present invention, the heat insulating layer may be a porous substrate or a graphite layer having a plurality of micropores forming air pockets capable of trapping air.

In the adiabatic adhesive according to an embodiment of the present invention, the adhesive layer has a structure in which the first and second adiabatic adhesive layers are laminated,

The heat insulating filler may be a heat insulating filler having different sizes or different shapes dispersed in the first and second heat insulating adhesive layers.

According to an aspect of the present invention, there is provided an electronic device including: a main body including a plurality of components including a heat generating component; And the aforementioned heat insulating tape adhered to the heat generating component or adhered to the component adjacent to the heat generating component.

Another object of the present invention is to provide a composite sheet comprising: a heat-insulating tape including a base material and an adhesive layer formed on one or both sides of the base material and having a heat-insulating filler dispersed therein; And a heat radiation sheet which is adhered to one side of the heat insulating tape adhesive layer to diffuse and radiate heat.

The composite sheet according to an embodiment of the present invention may further include a heat-radiating adhesive layer formed on the other surface of the heat-radiating sheet.

In the composite sheet according to an embodiment of the present invention, a first thermally conductive filler for horizontally diffusing heat dispersed in the heat-radiating adhesive layer and a second thermally conductive filler for transmitting the heat to the first thermally conductive filler And may further include a filler.

In the composite sheet according to an embodiment of the present invention, the first thermally conductive filler may have a plate-like structure and the second thermally conductive filler may have a spherical structure.

In the composite sheet according to an embodiment of the present invention, the first thermally conductive filler may include at least one of graphite nano fiber (GNF), carbon nanotube (CNT), metal fiber, AlN, . ≪ / RTI >

In the composite sheet according to an embodiment of the present invention, the second thermally conductive filler may be made of at least one of MgO, Al ₂ O ₃ , SiC, and diamond.

In the composite sheet according to an embodiment of the present invention, the first thermally conductive filler may have a shape having an aspect ratio of 1: 100.

In the composite sheet according to an embodiment of the present invention, the heat-radiating adhesive layer may contain 5 to 15 wt% of the first and second thermally conductive fillers.

The composite sheet according to an embodiment of the present invention may further include an electrically conductive adhesive layer formed on the other surface of the heat-radiating sheet.

In the composite sheet according to an embodiment of the present invention, the electrically conductive adhesive layer may include at least one of electrical conduction of at least one of an electrically conductive metal, carbon black, carbon nanotube, graphene, and conductive polymer (PDOT) And may be made of an adhesive material containing a substance.

According to the present invention, it is possible to maximize the heat insulation efficiency by realizing an ultra-thin insulating tape made of an adhesive layer and a heat insulating layer and having excellent adhesiveness and double heat shielding by the heat insulating filler and heat insulating layer included in the adhesive layer.

In the present invention, a reinforcing sheet is laminated on a heat insulating tape to insulate the heat insulating tape, and the heat generated from the heat generating component of the electronic device is prevented from being transmitted to the outside of the electronic device by heat insulation or heat radiation from the reinforcing sheet, The temperature of the rear surface can be kept below the specified temperature.

The composite sheet of the present invention can prevent the heat generated from the heat generating component from being transmitted to the outside, so that it is possible to prevent a user who is in close contact with the electronic device from wearing a low temperature image.

According to the present invention, it is possible to manufacture a tape and a heat insulating sheet having excellent insulation performance without increasing the thickness of electronic equipment and having an ultra-thin thickness.

1A and 1B are sectional views of a heat insulating tape according to the present invention,
2A to 2C are sectional views showing a state in which a heat insulating tape according to the present invention is adhered to an electronic device part,
3 is a sectional view of a composite sheet provided with a heat insulating tape according to a first embodiment of the present invention,
4 is a sectional view of a composite sheet provided with a heat insulating tape according to a second embodiment of the present invention,
5 is a cross-sectional view of a heat-sensitive adhesive layer applied to a composite sheet according to the present invention,
6 is a sectional view of a composite sheet provided with a heat insulating tape according to a third embodiment of the present invention,
7 is a cross-sectional view of a composite sheet provided with a heat insulating tape according to a fourth embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIGS. 1A and 1B, the adiabatic tapes 100a and 100b according to the present invention include adhesive layers 110, 110a, and 110b; An insulating filler 120 dispersed in the adhesive layers 110, 110a, and 110b and blocking heat; And a substrate having the adhesive layers 110, 110a, and 110b formed on one or both surfaces thereof, wherein the substrate may be composed of a heat insulating layer 130 for inhibiting heat transmission.

The heat insulating tapes 100a and 100b according to the present invention are excellent in tackiness due to the ultra thin structure composed of the adhesive layers 110, 110a and 110b and the heat insulating layer 130, The heat insulation efficiency can be maximized by double heat shielding by the heat insulating filler 120 and the heat insulating layer 130.

The adhesive layers 110, 110a, and 110b are made of an adhesive material and adhere the heat-insulating tapes 100a and 100b to a heat-generating component or an adjacent component of the heat-generating component. At this time, when the adhesive material is formed of the adhesive material having excellent thermal conductivity, the heat generated from the heat generating component can be quickly transmitted to the heat insulating layer 130.

The adhesive layers 110, 110a and 110b (including the adhesive layer described later) may be formed of an acrylic, an epoxy, a urethane, a polyamide, a polyethylen, an EVA, Based, or PVC-based. The adhesive layer may be formed of a hot melt adhesive layer in the form of a web or an inorganic ball having a plurality of pores in which thermally adherable fibers are accumulated.

That is, the adhesive layers 110, 110a and 110b are embodied as a web having a plurality of pores formed by accumulating heat-stickable fibers obtained by electrospinning a thermal spraying material, a heat insulating filler 120, You can.

In this case, since the size of the thermally adherable fiber can be reduced to a nano-size of 1 μm or less, the pore size becomes small in this case, and the air of the pore is suppressed from being convected to become a fine pocket for heat- .

Therefore, the adhesive layers 110, 110a, and 110b are structurally capable of having heat shielding ability due to the micro pores formed between the nanofibers.

Further, when the heat insulating filler 120 is smaller than the size of the heat sealable fiber, the heat insulating filler 120 is confined within the electrospun fiber.

At this time, the fibers fall down with the heat insulating filler 120 embedded therein, are arranged in the horizontal direction, and are accumulated in the vertical direction to form the adhesive layers 110, 110a, and 110b.

Therefore, in the present invention, the thermally adherable fibers having the heat insulating filler 120 embedded therein can be accumulated, and the plate-like heat insulating filler can be arranged substantially in the horizontal direction.

The heat insulating filler 120 is dispersed in the form of powder in the adhesive layers 110, 110a and 110b and blocks heat transferred to the adhesive layers 110, 110a, and 110b. The heat insulating filler 120 is preferably made of an airgel having excellent heat insulating properties, but is not limited thereto.

The size of the heat insulating filler 120 may be 0.1 to 1000 μm and the shape of the heat insulating filler 120 may be a spherical shape, a polygonal shape or a plate shape. For example, the heat insulating filler 120 of a plate- The blocking efficiency of the heat transmitted in the vertical direction of the adhesive layers 110, 110a, and 110b can be increased.

As described above, the heat insulating tapes 100a and 100b are provided with the adhesive layers 110, 110a and 110b in which the heat insulating filler 120 is dispersed, thereby improving the heat insulating efficiency.

Here, the heat insulating filler 120 is dispersed in the adhesive layers 110, 110a and 110b, and the heat components flowing into the adhesive layer 110, 110a, and 110b regions where the heat insulating filler 120 does not exist, (110, 110a, 110b) without being blocked by the adhesive layer (120).

Therefore, in the present invention, the heat insulating filler 120 is arranged in the horizontal direction of the adhesive layers 110, 110a, and 110b so as to increase the blocking efficiency of the heat component transmitted in the vertical direction of the adhesive layer 110 .

If the spherical heat insulating filler is further dispersed in the adhesive layers 110, 110a and 110b in which the plate-like heat insulating filler is dispersed, the spherical heat insulating filler is positioned between the plate heat insulating fillers, So that the heat shielding ability can be further enhanced.

Meanwhile, in the present invention, the adhesive layers 110, 110a, and 110b may be formed by stacking first and second adiabatic adhesive layers having different sizes or different shapes of heat-insulating fillers dispersed therein.

That is, if the heat insulating fillers of different sizes or different shapes are dispersed in the first and second adiabatic adhesive layers, the heat blocking path of the first adiabatic adhesive layer and the heat blocking path of the second adiabatic adhesive layer are different, The efficiency can be improved.

For example, when the plate-like heat insulating filler is dispersed in the first adiabatic adhesive layer and the spherical adiabatic filler is dispersed in the second adiabatic adhesive layer, the heat transferred to the first adiabatic adhesive layer is partially blocked by the plate- The heat which is not blocked by the heat insulating filler is transmitted to the second heat insulating adhesive layer and is blocked by the spherical heat insulating filler, thereby increasing the heat insulating efficiency.

In the present invention, a first web having a plurality of pores formed by accumulating fibers capable of thermo-sticking obtained by electrospinning a spinning solution mixed with a thermosensitive material, a first heat-insulating filler and a solvent, Heat-sealable layer obtained by electrospinning a spinning solution in which a thermally adhesive material, a second heat-insulating filler and a solvent are mixed, and fibers in which a second heat-insulating filler is embedded are accumulated in a first web An adiabatic pressure-sensitive adhesive can be realized as a second adiabatic adhesive layer made of a second web having a plurality of pores.

That is, the laminated structure of the first and second adiabatic adhesive layers can be easily formed by electrospinning, and each of the first and second adiabatic adhesive layers can have a plurality of pores of the heat-generating micropockets, It is possible to provide a heat shielding capability.

The heat insulating layer 130 may include a sheet-like member having a thermal conductivity of 20 W / mk or less. The heat insulating layer 130 may be a porous substrate having a plurality of micropores for forming air pockets capable of trapping air.

Here, the porous substrate traps air in a plurality of micropores to suppress air convection, thereby making it possible to use air as a heat insulating material.

The porous substrate may be, for example, a nano-web having a plurality of pores by an electrospinning method, a nonwoven fabric having a plurality of pores, or the like, and may have a stacked structure thereof. Any material can be applied if it is possible. Here, it is preferable that the pore size of the porous substrate is less than 5 mu m at most from several tens nm.

Preferably, the porous substrate may be one of a nanofiber web having a plurality of pores formed by accumulation of nanofibers, a nonwoven fabric, and a laminated structure thereof.

Here, the nanofiber web is prepared by preparing a spinning solution by mixing a polymer material having excellent heat resistance and a solvent at a predetermined ratio, forming a nanofiber by electrospinning the spinning solution, accumulating the nanofiber, And is formed in the form of a nano web having fine pores.

As the diameter of the nanofibers is smaller, the specific surface area of the nanofibers is increased and the air trapping ability of the nanofiber web having a plurality of micropores is increased, so that the heat insulating performance is improved. Therefore, it is preferable that the diameter of the nanofiber is in the range of 0.3 to 5 um and the porosity of the micropores is in the range of 50 to 80%.

In general, air is known as an excellent thermal insulation material with low thermal conductivity, but it can not be used as a thermal insulation material by convection or the like. However, since the heat insulating sheet according to the present invention is formed in the form of a nanoweb having a plurality of micropores, air is not convected in each micropores and trapped (trapped). It is.

The spinning method applied to the present invention can be applied to a variety of spinning processes including general electrospinning, air-electrospinning (AES), electrospray, electrobrown spinning, centrifugal electrospinning, Any one of flash-electrospinning may be used.

Polymer materials used to make nanofiber webs include, for example, low polymer polyurethanes, high polymer polyurethanes, polystyrene (PS), polyvinylalcohol (PVA), polymethyl methacrylate (PMMA), polylactic acid (PLA) (PVA), polyvinylpyrrolidone (PVP), polyvinylchloride (PVC), nylon (Nylon), polyacrylonitrile (PAN) ), Polycarbonate (PC), polyetherimide (PEI), polyvinylidene fluoride (PVdF), polyetherimide (PEI), and polyestheresulphone (PES).

The solvent is selected from the group consisting of DMA (dimethyl acetamide), N, N-dimethylformamide, N-methyl-2-pyrrolidinone, DMSO, THF, DMAc, ethylene carbonate, DEC, dimethyl carbonate, ethyl methyl carbonate, propylene carbonate, water, acetic acid, and acetone. .

Since the nanofiber web is manufactured by the electrospinning method, the thickness is determined according to the spinning amount of the spinning solution. Therefore, there is an advantage in that it is easy to make the thickness of the nanofiber web to a desired thickness.

As described above, since the nanofiber web is formed as a nanofiber web in which the nanofibers are accumulated by the spinning method, it can be formed into a form having a plurality of micropores without any additional process, and the size of the micropores It is also possible to control. Therefore, it is possible to finely form a large number of pores, so that the heat transfer inhibiting performance is excellent and the heat insulating performance can be improved.

2A to 2C are sectional views showing a state in which a heat insulating tape according to the present invention is adhered to an electronic device part.

The above-described heat insulating tape according to the present invention can be directly adhered to a heat generating component of an electronic device or adhere to a component adjacent to the heat generating component to perform a heat insulating function.

That is, the heat insulating tape 100a having the adhesive layer 110 formed on one side of the heat insulating layer 130 (or the substrate) shown in FIG. 1A may adhere to the heat generating component 210 (FIG. (FIG. 2B), and blocks the heat generated by the heat generating component 210. In this case,

The double-sided heat insulating tape 100b having the adhesive layers 110a and 110b on both sides of the heat insulating layer 130 (or the substrate) shown in FIG. 1B is adhered to each of the heat generating component 210 and the adjacent components 220 The heat generated from the heat generating component 210 is prevented from being transmitted to the adjacent component 220.

3 and 4 are sectional views of a composite sheet provided with a heat insulating tape according to the first and second embodiments of the present invention.

In the present invention, a composite sheet can be realized by bonding a reinforcing sheet to the above-mentioned heat insulating tape. Here, the reinforcing sheet may be a heat insulating member or a heat dissipating member, and the heat insulating sheet and the reinforcing sheet may be adhered to the adhesive layer interposed between the heat insulating sheet and the reinforcing sheet.

That is, in the present invention, a reinforcing sheet is laminated on a heat insulating tape to insulate from a heat insulating tape, and heat generated from a heat generating component of the electronic device is prevented from being transferred to the outside of the electronic device by heat insulation or heat radiation in the reinforcing sheet, There is an advantage that the front and rear temperatures can be kept below the specified temperature.

Therefore, the composite sheet of the present invention can prevent the heat generated from the exothermic component from being transmitted to the outside, so that it is possible to prevent a user who is in close contact with the electronic device from wearing a low temperature image.

Referring to FIG. 3, the composite sheet with the heat insulating tape according to the first embodiment of the present invention includes a heat insulating layer 130 for suppressing the transfer of a substrate or heat, and a heat insulating layer 130 formed on both sides of the heat insulating layer 130, A heat insulating tape (100b) comprising an adhesive layer (110a, 110b) in which an insulating filler to be shielded is dispersed therein; And a heat radiation sheet 310 adhered to the adhesive layer 110a of the heat insulating tape 100b to diffuse and dissipate the heat.

The heat-radiating sheet 310 may be made of a material having a heat conductivity of about 200 to 3000 W / mK, that is, any one of Cu, Al, Ag, Ni, and graphite or a combination thereof. Taking into consideration the unit price and the characteristics, a laminated structure of Cu, graphite, Cu and graphite can be preferably used.

The heat-radiating sheet 310 quickly dissipates the heat generated from the heat-generating component in the horizontal direction to prevent locally high heat from being generated, thereby preventing the heat-generating component and components built in the electronic device from being damaged by high heat.

Referring to FIG. 4, the composite sheet with the heat insulating tape according to the second embodiment of the present invention includes a heat insulating layer 130 for inhibiting the transmission of a substrate or heat, and a heat insulating layer 130 formed on one surface of the heat insulating layer 130, A heat insulating tape (100a) comprising an adhesive layer (110) in which an insulating filler to be shielded is dispersed therein; A heat radiation adhesive layer 320 formed on the other surface of the heat insulating layer 130 of the heat insulating tape 100a and having a thermally conductive filler dispersed therein; And a heat dissipation sheet (310) adhered to the heat dissipation / adhesion layer (320) to diffuse and dissipate the heat.

Therefore, the composite sheet provided with the heat insulating tape according to the second embodiment of the present invention can perform the heat insulating function in the heat insulating tape 100a and improve the heat radiation performance in the heat-radiating adhesive layer 320 and the heat-radiating sheet 310 .

5 is a cross-sectional view of a heat-sealable adhesive layer applied to the composite sheet according to the present invention.

5, the heat-radiation adhesive layer 320 includes an adhesive layer 321; A first thermally conductive filler (322) dispersed in the adhesive layer (321) and diffusing the transferred heat horizontally; And a second thermally conductive filler (323) dispersed in the adhesive layer (321) and transferring the heat to the first thermally conductive filler (322).

The heat-dissipating adhesive layer 320 of the present invention can improve the heat radiation efficiency by diffusing the heat transferred from the exothermic component in the horizontal direction in the first thermally conductive filler 322 by being adhered to or adjacent to the exothermic component. The second thermally conductive filler 323 functions to transfer the heat transferred from the heat generating component to the first thermally conductive filler 322 to promote thermal diffusion in the horizontal direction of the heat- Ability to improve.

That is, the first and second thermally conductive fillers 322 and 323 are dispersed in the adhesive layer 321 to promote diffusion of the heat of the heat generating component in the horizontal direction, The temperature of the heat transmitted in the vertical direction of the heat exchanger can be lowered.

The second thermally conductive filler 323 may be located in the region of the adhesive layer 321 where the first thermally conductive filler 322 is not present and may transfer the heat of the exothermic component to the first thermally conductive filler 322, Change the progress path.

The first thermally conductive filler 322 preferably has a plate-like structure (or a rectangular structure) so as to diffuse in the horizontal direction of the heat-sealable adhesive layer 320. The first thermally conductive filler 322 may be a graphite nano fiber, a carbon nanotube (CNT) And may be made of at least one of a metal fiber, AlN (aluminum nitride), and BN (boron nitride). The first thermally conductive filler 322 is preferably formed in a shape having an aspect ratio of 1: 100.

The second thermally conductive filler 323 may have a spherical structure to transfer heat to the first thermally conductive filler 322. At this time, the second thermally conductive filler 323 receives heat transferred from the heat-generating component And diffuses to the spherical surface to change the path of the heat transmitted in the vertical direction of the heat-dissipating adhesive layer 320 to transfer heat to the first thermally conductive filler 322 quickly. The second thermally conductive filler 323 is preferably made of at least one of MgO, Al ₂ O ₃ , SiC, and diamond.

Here, the first thermally conductive filler 322 may be arranged on a plurality of layers having vertically spaced apart layers of the adhesive layer 321, and the second thermally conductive filler 323 may be arranged on the first thermally conductive filler 322 ). ≪ / RTI >

The first and second thermally conductive fillers 322 and 323 may be made of a material having a thermal conductivity of about 200 to 3000 W / mk.

It is preferable that the first and second thermally conductive fillers 322 and 323 contain 5 to 15 wt% of the total weight of the adhesive layer 321. If the adhesive layer 110 contains the first and second thermally conductive fillers 322 and 323 of 5 wt% or less, a desired level of heat dissipation efficiency can not be obtained and the first and second thermally conductive fillers 322 and 323 of 15 wt% There is a drawback that the adhesive performance is deteriorated.

6 and 7 are sectional views of a composite sheet provided with a heat insulating tape according to third and fourth embodiments of the present invention.

Referring to FIG. 6, the composite sheet with the heat insulating tape according to the third embodiment of the present invention includes a heat insulating layer 130 for suppressing the transfer of a substrate or heat, and a heat insulating layer 130 formed on both sides of the heat insulating layer 130, A heat insulating tape (100b) comprising an adhesive layer (110a, 110b) in which an insulating filler to be shielded is dispersed therein; A heat radiation sheet 310 which is adhered to the adhesive layer 110b of the heat insulating tape 100b to diffuse and dissipate the heat; And a heat dissipation adhesive layer 320 formed on the other surface of the heat dissipation sheet 310 and having a thermally conductive filler dispersed therein.

The composite sheet provided with the heat insulating tape according to the third embodiment of the present invention can be adhered to both sides by the adhesive layer 110a of the heat insulating tape 100b formed on one surface of the heat insulating sheet and the heat dissipating adhesive layer 320 formed on the other surface Structure can be implemented.

7, the composite sheet with the heat insulating tape according to the fourth embodiment of the present invention includes a heat insulating layer 130 for suppressing the transfer of a substrate or heat, and a heat insulating layer 130 formed on both sides of the heat insulating layer 130, A heat insulating tape (100b) comprising an adhesive layer (110a, 110b) in which an insulating filler to be shielded is dispersed therein; A heat radiation sheet 310 which is adhered to the adhesive layer 110b of the heat insulating tape 100b to diffuse and dissipate the heat; And an electrically conductive adhesive layer 330 formed on the other surface of the heat-radiating sheet 310.

The electrically conductive adhesive layer 330 is capable of blocking and absorbing electromagnetic waves and capable of performing an adhesive function. The electrically conductive adhesive layer 330 may be formed of an electrically conductive metal such as Ni, Cu, or Ag, which is excellent in electrical conductivity, carbon black, An adhesive material comprising at least one electrically conductive material selected from the group consisting of graphene, conductive polymer (PDOT). And the adhesive material may be laminated on the heat-radiating sheet 310 by various methods such as coating, sputtering, and printing.

In the heat-insulating tape and the composite sheet described above, when the pressure-sensitive adhesive layer is exposed to the outside, the handling properties such as transportation and storage may deteriorate due to the adhesive property of the pressure-sensitive adhesive layer. The releasing member is adhered to the pressure-sensitive adhesive layer exposed on the surface.

That is, the release member is attached to the adhesive layer before adhering to the parts of the heat insulating tape and the composite sheet to perform the function of protecting the adhesive layer, and after separating the release member and attaching the heat insulating tape and the composite sheet to the parts of the electronic device will be.

Such a release member can be made of a resin material such as a PET film, and a fiber material other than a resin material can be used.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be construed as limited to the embodiments set forth herein. Various changes and modifications may be made by those skilled in the art.

The present invention provides a heat-insulating tape having an ultra-thin structure capable of efficiently insulating heat generated from a heat-generating component of an electronic device and capable of adhesion.

100a, 100b: heat insulating tape 110, 110a, 110b: adhesive layer
120: Insulating filler 130: Insulating layer
210: heat generating component 220: adjacent component
310: heat radiation sheet 320: heat radiation adhesive layer
321: adhesive layer 322, 323: thermally conductive filler
330: electrically conductive adhesive layer

Claims (18)

An adhesive layer;
An insulating filler dispersed in the adhesive layer and blocking heat; And
Wherein the adhesive layer is formed on one surface or both surfaces of the substrate. The method according to claim 1,
Wherein the adhesive layer is one of acrylic, epoxy, urethane, polyamide, polyethylen, EVA, polyester, and PVC. The method according to claim 1,
Wherein the adhesive layer is a hot melt adhesive layer sheet in a web state or an inorganic ball state in which fibers capable of thermosetting are accumulated and have a plurality of pores. The method according to claim 1,
Wherein the heat insulating filler is a plate-like heat insulating filler arranged in the horizontal direction of the adhesive layer so as to block the transmitted heat. The method according to claim 1,
Wherein the adhesive layer is a web having a plurality of pores which are formed by accumulating thermosettable fibers obtained by electrospinning a thermosensitive material, a thermosetting material mixed with the thermosetting filler and a solvent, and forming fine pockets for heat transfer. The method according to claim 1,
Wherein the substrate is a porous substrate or graphite layer having a plurality of micropores forming an air pocket capable of trapping air. The method according to claim 1,
The pressure-sensitive adhesive layer has a structure in which the first and second adiabatic pressure-sensitive adhesive layers are laminated,
Wherein the heat insulating filler is an insulating filler dispersed in each of the first and second heat insulating adhesive layers and having different sizes or different shapes. A main body including a plurality of parts including a heat generating part; And
And a heat insulating tape according to any one of claims 1 to 7, wherein the heat insulating adhesive tape is adhered to the heat generating component or adheres to a component adjacent to the heat generating component. A heat insulating tape comprising: a substrate; and a pressure-sensitive adhesive layer formed on one or both surfaces of the substrate, the pressure-sensitive adhesive layer being dispersed therein, the heat-insulating filler intercepting heat; And
And a heat radiation sheet which is adhered to one side of the heat insulating tape adhesive layer to diffuse and radiate heat. 10. The method of claim 9,
And a heat radiation adhesive layer formed on the other surface of the heat radiation sheet. 11. The method of claim 10,
A first thermally conductive filler for horizontally diffusing heat dispersed in the heat-radiating adhesive layer, and a second thermally conductive filler for transferring the heat to the first thermally conductive filler. 12. The method of claim 11,
Wherein the first thermally conductive filler is a plate-like structure and the second thermally conductive filler is a spherical structure. 12. The method of claim 11,
Wherein the first thermally conductive filler comprises at least one material selected from GNF (Graphite Nano Fiber), CNT (Carbon Nano Tube), metal fiber, AlN (Aluminum nitride) and BN (Boron nitride). 12. The method of claim 11,
Wherein the second thermally conductive filler comprises at least one material selected from the group consisting of MgO, Al ₂ O ₃ , SiC, and diamond. 12. The method of claim 11,
Wherein the first thermally conductive filler has a shape having an aspect ratio of 1: 100. 12. The method of claim 11,
Wherein the heat radiation adhesive layer contains 5 to 15 wt% of the first and second thermally conductive fillers. 10. The method of claim 9,
And an electrically conductive adhesive layer formed on the other surface of the heat radiation sheet. 18. The method of claim 17,
Wherein the electrically conductive adhesive layer comprises an adhesive material comprising at least one electrically conductive material selected from the group consisting of an electrically conductive metal, carbon black, carbon nanotube, graphene, and a conductive polymer (PDOT).

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