CN205467591U

CN205467591U - Thermal insulation piece

Info

Publication number: CN205467591U
Application number: CN201620055422.3U
Authority: CN
Inventors: 牟乐志
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-01-20
Filing date: 2016-01-20
Publication date: 2016-08-17
Anticipated expiration: 2026-01-20

Abstract

The utility model provides a thermal insulation piece, include: the cotton layer of bubble, the insulating rete of a PI, graphite flake, the insulating rete of the 2nd PI, laminate through the compounding machine with the insulating rete of a PI earlier in one side of graphite flake, the opposite side of graphite flake is laminated through the compounding machine with the insulating rete of the 2nd PI again, at last shaping bubble cotton layer on insulating rete of a PI or the insulating rete of the 2nd PI. The utility model discloses a thermal insulation piece uses the graphite flake as the substrate, adds various subsidiary materials such as insulating rete of PI and the cotton layer of bubble, through laminating, shaping production, is the design production for utilizing gap transfer heat specially, can blind, accomplish the heat transfer of generate heat position and radiating part interdigit, and played heat conduction and the effect of going out heat uniform application, still play simultaneously insulation, shock attenuation, effect such as sealed, can satisfy the designing requirement of miniaturized and ultra -thinization of equipment, have manufacturability and usability, and thickness application scope guangZhou.

Description

A kind of insulating heat-conductive sheet

Technical field

This utility model relates to radiator field, particularly to a kind of insulating heat-conductive sheet.

Background technology

Entering 21 century, along with scientific and technological level and growth in the living standard, people are more and more higher to the demand of electronic product, and mobile phone, computer are closely bound up with people's daily life especially.People are not limited solely to pursue the use of electronic product basic function, more pursue experience functions.

But along with the raising of electronic product processing speed, size of electronic devices is more and more less, function becomes increasingly complex, and the heat of generation has a strong impact on the Performance And Reliability of whole system.Statistics shows, electronic devices and components temperature often raises 2 degree, reliability decrease 10%；During temperature 50 degree, the life-span is 1/6 during temperature 25 degree.Electronic product ran may result in for a long time product hot, heating, card machine even occurs time serious, explodes, affect experience.

The material of traditional heat sinks is generally aluminum or copper, the most either chip package or product systems heat radiation, is the most all directly to dispel the heat with both materials or coordinate silica gel, fan and liquid stream to form cooling system.

Although aluminum and copper have the highest thermal conductivity, (aluminum is 180W/m.K, copper is 400W/m.K), but when considering its heavy quantitative limitation, cannot meet the electronic device trend to highly integrated trickle degree development, how providing a kind of new insulating heat-conductive device is current problem demanding prompt solution.

Utility model content

The utility model proposes a kind of insulating heat-conductive sheet, solve the insulating heat-conductive problem of electronic product.

The technical solution of the utility model is achieved in that

A kind of insulating heat-conductive sheet, including: foamed cotton layer, a PI insulating film layer, graphite flake, the 2nd PI insulating film layer；First being fitted by compounding machine with a PI insulating film layer in the side of described graphite flake, the opposite side of described graphite flake is fitted by compounding machine with the 2nd PI insulating film layer again, finally molding foamed cotton layer on a PI insulating film layer or the 2nd PI insulating film layer.

Alternatively, described insulating heat-conductive sheet is additionally provided with perforate.

Alternatively, the perforate of a described PI insulating film layer is little compared to the perforate of described graphite flake, and a described PI insulating film layer and graphite flake are carried out fitting and carrying out bound edge process at compounding machine with the 2nd PI insulating film layer after processing, and seal described graphite flake.

Alternatively, the perforate of described 2nd PI insulating film layer is little compared to the perforate of described graphite flake, and a described PI insulating film layer and graphite flake are carried out fitting and carrying out bound edge process at compounding machine with the 2nd PI insulating film layer after processing, and seal described graphite flake.

Alternatively, the quantity of described perforate is one or more.

Alternatively, described perforate be shaped as rectangle or circle.

Alternatively, described insulating heat-conductive sheet offers two square openings, a size of 3mm × 4mm.

The beneficial effects of the utility model are:

(1) insulating heat-conductive sheet is with graphite flake as base material, add the various auxiliary materials such as PI insulating film layer and foamed cotton layer, produced by laminating, molding, it is to produce exclusively for the design utilizing gap transmission heat, can blind, complete the heat transfer of heating position and radiating part interdigit, serve heat conduction, and the effect that even heat is spread；

(2) also act as the effects such as insulation, damping, sealing, it is possible to meet the design requirement of device miniaturization and ultrathin, great manufacturability and usability, and thickness applied widely simultaneously.

Accompanying drawing explanation

In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the sectional structure chart of this utility model a kind of insulating heat-conductive sheet；

Fig. 2 is the Facad structure figure of an embodiment of this utility model a kind of insulating heat-conductive sheet.

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.

The utility model proposes a kind of insulating heat-conductive sheet, as it is shown in figure 1, include: foamed cotton layer the 10, the oneth PI insulating film layer 20, graphite flake the 30, the 2nd PI insulating film layer 40；First fitted by compounding machine with a PI insulating film layer 20 in the side of described graphite flake 30, the opposite side of described graphite flake 30 is fitted by compounding machine with the 2nd PI insulating film layer 40 again, finally molding foamed cotton layer 10 on a PI insulating film layer 20 or the 2nd PI insulating film layer 40.

The structure of insulating heat-conductive sheet shown in Fig. 1, foamed cotton layer takes shape in the outside of a PI insulating film layer, and those skilled in the art are according to teaching of the present utility model, it is also possible to foamed cotton layer takes shape in the outside of the 2nd PI insulating film layer.

Preferably, in order to improve the heat-conducting effect of insulating heat-conductive sheet, reinforced insulation, described insulating heat-conductive sheet is additionally provided with perforate.

For the insulating heat-conductive sheet after perforate, the bound edge of perforate processes two schemes:

Scheme one: the perforate of a described PI insulating film layer is little compared to the perforate of described graphite flake, a described PI insulating film layer and graphite flake carry out fitting and carrying out bound edge process at compounding machine with the 2nd PI insulating film layer after processing, seal described graphite flake.

Scheme two: the perforate of described 2nd PI insulating film layer is little compared to the perforate of described graphite flake, a described PI insulating film layer and graphite flake carry out fitting and carrying out bound edge process at compounding machine with the 2nd PI insulating film layer after processing, seal described graphite flake.

Preferably, the quantity of described perforate is one or more, and its quantity can carry out flexible design according to the padding scheme in product gap；The shape of described perforate can also carry out flexible design according to the padding scheme in product gap, such as, can be rectangle or circle.

One specific embodiment of this utility model insulating heat-conductive sheet as shown in Figure 2, described insulating heat-conductive sheet is offered two square openings 50, a size of 3mm × 4mm.

Foam used by foamed cotton layer of the present utility model needs through high temperature resistant process so that it is have good heat conductivity and high-temperature stability, solves the problem through producing siloxanes for a long time after the laminating of existing heat conductive silica gel.

Insulating heat-conductive sheet of the present utility model has outstanding compression recovery power, long-time after remain to keep uniform adhesive force, thus play heat dissipation, solve existing heat-conducting silica gel sheet compression recovery force rate more weak, the problem that adhesive force is bad.

Insulating heat-conductive sheet of the present utility model has high resiliency, and PCB will not deform, and solves after existing heat-conducting silica gel sheet uses for a long time hardening, the problem that PCB has deformation.

Insulating heat-conductive sheet of the present utility model utilizes the paper plane structure of graphite, thermal conductivity is high (＞ 400W/mk), its thickness is little on the impact of heat conductivility, can also use in larger space, solve the heat conductive silica gel of existing thickness, the problem that its heat conductivility can decline because thickness increases.

Insulating heat-conductive sheet of the present utility model replaces existing heat-conducting silica gel sheet, can simplify, optimize the cooling system of electronic device, reduces device volume, simplifies preparation technology, the overall manufacturing cost of electronic device is greatly reduced.

Insulating heat-conductive sheet of the present utility model is with graphite flake as base material, add the various auxiliary materials such as PI insulating film layer and foamed cotton layer, produced by laminating, molding, it is to produce exclusively for the design utilizing gap transmission heat, can blind, complete the heat transfer of heating position and radiating part interdigit, serve heat conduction and the effect that even heat is spread out；Also act as the effects such as insulation, damping, sealing, it is possible to meet the design requirement of device miniaturization and ultrathin, great manufacturability and usability, and thickness applied widely simultaneously.

The foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; all within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.

Claims

1. an insulating heat-conductive sheet, it is characterised in that including: foamed cotton layer, a PI insulation Film layer, graphite flake, the 2nd PI insulating film layer；The side of described graphite flake is the most exhausted with a PI Velum layer is fitted by compounding machine, and the opposite side of described graphite flake insulate with the 2nd PI again Film layer is fitted by compounding machine, finally insulate at a PI insulating film layer or the 2nd PI Molding foamed cotton layer on film layer.

2. insulating heat-conductive sheet as claimed in claim 1, it is characterised in that described insulation is led Perforate it is additionally provided with on backing.

3. insulating heat-conductive sheet as claimed in claim 2, it is characterised in that a described PI The perforate of insulating film layer is little compared to the perforate of described graphite flake, a described PI insulating film layer Carry out fitting and carrying out bound edge at compounding machine with the 2nd PI insulating film layer after processing with graphite flake Process, seal described graphite flake.

4. insulating heat-conductive sheet as claimed in claim 2, it is characterised in that described 2nd PI The perforate of insulating film layer is little compared to the perforate of described graphite flake, a described PI insulating film layer Carry out fitting and carrying out bound edge at compounding machine with the 2nd PI insulating film layer after processing with graphite flake Process, seal described graphite flake.

5. insulating heat-conductive sheet as claimed in claim 2, it is characterised in that described perforate Quantity is one or more.

6. insulating heat-conductive sheet as claimed in claim 2, it is characterised in that described perforate It is shaped as rectangle or circle.

7. insulating heat-conductive sheet as claimed in claim 2, it is characterised in that described insulation is led Two square openings, a size of 3mm × 4mm are offered on backing.