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CN105979751B - Adhesive tape graphite heat conducting and heat radiating fin - Google Patents

Adhesive tape graphite heat conducting and heat radiating fin Download PDF

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Publication number
CN105979751B
CN105979751B CN201511029000.5A CN201511029000A CN105979751B CN 105979751 B CN105979751 B CN 105979751B CN 201511029000 A CN201511029000 A CN 201511029000A CN 105979751 B CN105979751 B CN 105979751B
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CN
China
Prior art keywords
parts
graphite
kapton
coat
film
Prior art date
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Active
Application number
CN201511029000.5A
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Chinese (zh)
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CN105979751A (en
Inventor
金闯
梁豪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Stick New Materials Polytron Technologies Inc
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Jiangsu Stick New Materials Polytron Technologies Inc
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Priority to CN201511029000.5A priority Critical patent/CN105979751B/en
Publication of CN105979751A publication Critical patent/CN105979751A/en
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Publication of CN105979751B publication Critical patent/CN105979751B/en
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    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
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    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2379/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2361/00 - C08J2377/00
    • C08J2379/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
    • C08J2379/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/326—Applications of adhesives in processes or use of adhesives in the form of films or foils for bonding electronic components such as wafers, chips or semiconductors
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
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    • C09J2400/10—Presence of inorganic materials

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Abstract

A kind of adhesive tape graphite heat conducting and heat radiating fin of the present invention, the first coat are located at Kapton upper surface；First coat by film in Kapton upper surface graphite modified dosage form at, first coat by film in Kapton upper surface graphite modified dosage form at this graphite modified dose painting is grouped as by the group of following parts by weight: 22 parts of benzophenone tetracarboxylic dianhydride, 12.5 parts of pyromellitic acid anhydride, 26 parts of diaminodiphenylmethane, 22.5 parts of dimethylformamide, 9.5 parts of N-Methyl pyrrolidone, 2.2 parts of ethylene glycol, 2.8 parts of dimethyl silicone polymer, 0.9 part of dibutyl phthalate；Graphite modified dose of film is obtained into treated Kapton in the upper surface of Kapton；Will that treated is cooling after Kapton is warming up to 1200 DEG C, to obtain the carbonized film of pre-burned.The present invention avoids hot-spot, while realizing the uniformity of heating conduction, improves heat dissipation performance stability, the reliability of product, greatly reduces the cost of product.

Description

Adhesive tape graphite heat conducting and heat radiating fin
Technical field
The present invention relates to a kind of adhesive tape graphite heat conducting and heat radiating fins, belong to tape technology field.
Background technique
With modern microelectronic technology high speed development, electronic equipment (such as laptop, mobile phone, tablet computer) is increasingly Become ultra-thin, light, this structure significantly improves electronic equipment internal power density, and generated heat is not easy in operation It is discharged, is easy to accumulate rapidly and form high temperature.On the other hand, high temperature can reduce the performance of electronic equipment, reliability and use the longevity Life.Therefore, Current electronic industry proposes increasingly higher demands for the heat sink material as heat control system core component, urgently It needs a kind of high-efficiency heat conduction, light material to transfer heat away from rapidly, ensures that electronic equipment operates normally.
Kapton is mostly used for flexible circuit board in the prior art, is obtained although having using polyimide film sintered Graphite heat radiation fin, to be covered on heat source, but be constrained to Kapton product quality and performances the good and the bad not Together, influenced the performance of the two-sided pad pasting heat dissipation performance of heat dissipation, there are following technical problems: heat dissipation is uneven, adhesive tape easily occurs Hot-spot, the heat dissipation performance for improving product is unstable, reliability performance is poor, is unfavorable for product quality management control, influences product Competitiveness.
Summary of the invention
Objects of the present invention are to provide a kind of adhesive tape graphite heat conducting and heat radiating fin, which exists Heating conduction is both vertically and horizontally improved, hot-spot is avoided, while realizing the uniformity of heating conduction, Heat dissipation performance stability, the reliability for improving product, greatly reduce the cost of product.
To achieve the above object of the invention, the technical solution adopted by the present invention is that: a kind of adhesive tape graphite heat conducting and heat radiating fin, institute State the graphite heat conducting and heat radiating fin surface surface patch opposite with graphite heat conducting and heat radiating fin coated with thermally conductive adhesive layer, this thermally conductive adhesive layer Conjunction has separated type material layer；The graphite heat conducting and heat radiating fin is made of Kapton, the first coat and the second coat, institute It states the first coat and is located at Kapton upper surface；
First coat, the second coat are grouped as by the group of following parts by weight: 22 parts of benzophenone tetracarboxylic dianhydride, 12.5 parts of pyromellitic acid anhydride, 26 parts of diaminodiphenylmethane, 22.5 parts of dimethylformamide, N-Methyl pyrrolidone 9.5 Part, 2.2 parts of ethylene glycol, 2.8 parts of dimethyl silicone polymer, 0.9 part of dibutyl phthalate；
The graphite heat conducting and heat radiating fin is obtained by following steps:
Step 1: the upper and lower surfaces by graphite modified dose of film in Kapton obtain treated polyimides Film；
Step 2: will treated Kapton under inert gas protection, rise to 240 DEG C ~ 260 from room temperature DEG C, 480 DEG C ~ 500 DEG C are risen to after heat preservation, are warming up to 780 DEG C ~ 820 DEG C after heat preservation again, 1200 are risen to after heat preservation It is cooling after DEG C, to obtain the carbonized film of pre-burned；
Step 3: rolling the carbonized film of the pre-burned using calender；
Step 4: carbonized film is warming up to 2350 DEG C ~ 2450 DEG C, keep the temperature, then be warming up to 2850 DEG C ~ 2950 It is cooling after DEG C, to obtain the graphite film of main firing；
Step 5: the graphite film of resulting main firing is then carried out calendering to obtain the graphite heat conducting and heat radiating fin.
Since above-mentioned technical proposal is used, the present invention has following advantages and effect compared with prior art:
1, adhesive tape graphite heat conducting and heat radiating fin of the present invention, in structure graphite linings by upper surface be coated with one layer it is graphite modified The Kapton of agent is prepared, and improves heating conduction in the vertical direction and the horizontal direction, avoids adhesive tape part mistake Heat realizes the uniformity of adhesive tape heating conduction；Secondly, it is located at graphite modified dose of Kapton surface by hexichol first 22 parts of ketone tetracid dianhydride, 12.5 parts of pyromellitic acid anhydride, 26 parts of diaminodiphenylmethane, 22.5 parts of dimethylformamide, second 2.2 parts of glycol, 2.8 parts of dimethyl silicone polymer compositions, are coated on Kapton, the needle being filled in heating process Hole improves crystallinity simultaneously, also overcome be heat-shrinked it is excessive caused by it is uneven, improve graphite linings biaxial tension performance.
2, adhesive tape graphite heat conducting and heat radiating fin of the present invention is located at graphite modified dose of Kapton surface by hexichol 20 ~ 25 parts of ketone tetracid dianhydride, 12 ~ 18 parts of pyromellitic acid anhydride, 20 ~ 28 parts of diaminodiphenylmethane, dimethylformamide 20 ~ 25 parts, 8 ~ 10 parts of N-Methyl pyrrolidone, 1.5 ~ 2.5 parts of ethylene glycol, 2 ~ 3 parts of dimethyl silicone polymer compositions, using diformazan 20 ~ 25 parts of base formamide, 8 ~ 10 parts of N-Methyl pyrrolidone reduce azeotropic point and smooth boiling point area, improve final production The flatness and flexibility of product film forming；；Secondly, 20 ~ 25 parts of dimethylformamide, 8 ~ 10 parts of N-Methyl pyrrolidone and adjacent benzene two 0.8 ~ 1.5 part of Kapton surface of formic acid dibutyl ester, prevents bubble from generating, is more advantageous to filled polyimide film Small pin hole improves the uniformity of heat dissipation patch heating conduction.
3, adhesive tape graphite heat conducting and heat radiating fin of the present invention increases calendering step between the carbonized film and graphitization of pre-burned Suddenly, and after re-forming heat conduction graphite patch roll again, the volume contraction for avoiding fold and being graphitized in sintering process mentions High compactness and crystallinity, further improve heating conduction in the vertical direction and the horizontal direction.
Detailed description of the invention
Attached drawing 1 is adhesive tape graphite heat conducting and heat radiating fin structural schematic diagram of the present invention；
Attached drawing 2 is the partial structural diagram of attached drawing 1.
In the figures above: 1, graphite heat conducting and heat radiating fin；11, Kapton；12, the first coat；13, the second coating Layer；2, thermally conductive adhesive layer；3, separated type material layer.
Specific embodiment
The present invention will be further described below with reference to examples:
Embodiment: a kind of adhesive tape graphite heat conducting and heat radiating fin, 1 surface of graphite heat conducting and heat radiating fin are coated with thermally conductive gluing Layer 2, this thermally conductive adhesive layer 2 surface opposite with graphite heat conducting and heat radiating fin 1 are fitted with separated type material layer 3；The graphite heat conducting dissipates Backing 1 is made of Kapton 11, the first coat 12 and the second coat 13, and first coat 12 is located at polyamides 11 upper surface of imines film；
First coat by film in Kapton upper surface graphite modified dosage form at this graphite modified dose Painting is grouped as by the group of following parts by weight: 22 parts of benzophenone tetracarboxylic dianhydride, 12.5 parts of pyromellitic acid anhydride, diamino hexichol 26 parts of methane, 22.5 parts of dimethylformamide, 9.5 parts of N-Methyl pyrrolidone, 2.2 parts of ethylene glycol, dimethyl silicone polymer 2.8 parts, 0.9 part of dibutyl phthalate；
The graphite heat conducting and heat radiating fin 1 is obtained by following steps:
Step 1: graphite modified dose of film is obtained in the upper surface of Kapton 2, treated that polyimides is thin Film；
Step 2: will that treated is cooling after Kapton is warming up to 1200 DEG C, to obtain the carbon of pre-burned Change film；
Step 3: rolling the carbonized film of the pre-burned using calender；
Step 4: it is cooling after carbonized film is warming up to 2850 DEG C ~ 2950 DEG C, to obtain the graphite film of main firing；
Step 5: the graphite film of resulting main firing is then carried out calendering to obtain the graphite heat conducting and heat radiating fin 1.
When using above-mentioned adhesive tape graphite heat conducting and heat radiating fin, graphite linings are coated with one layer of graphite by upper surface and change in structure Property agent Kapton be prepared, improve heating conduction in the vertical direction and the horizontal direction, avoid adhesive tape local Overheat, realizes the uniformity of adhesive tape heating conduction；Secondly, it is located at graphite modified dose of Kapton surface by hexichol 20 ~ 25 parts of ketone tetracid dianhydride, 12 ~ 18 parts of pyromellitic acid anhydride, 20 ~ 28 parts of diaminodiphenylmethane, dimethylformamide 30 ~ 35 parts, 1.5 ~ 2.5 parts of ethylene glycol, 2 ~ 3 parts of dimethyl silicone polymer compositions, are coated on Kapton, are filled with and add Pin hole in thermal process improves crystallinity simultaneously, also overcome be heat-shrinked it is excessive caused by it is uneven, it is double to improve graphite linings To tensile property, azeotropic point is also reduced and smooth boiling point area, improve the flatness and flexibility of final products film forming； Again, Kapton surface has graphite modified dose, improves graphite linings and thermally conductive adhesive layer thermal conductivity in two-sided pad pasting Can, and calender is used to roll the carbonized film of the pre-burned, the volume contraction in fold and graphitization sintering process is avoided, Compactness and crystallinity are improved, heating conduction in the vertical direction and the horizontal direction is further improved；Again, dimethyl methyl 20 ~ 25 parts of amide, 8 ~ 10 parts of N-Methyl pyrrolidone and 0.8 ~ 1.5 part of Kapton surface of dibutyl phthalate, It prevents bubble from generating, is more advantageous to the small pin hole of filled polyimide film, improve the uniform of heat dissipation patch heating conduction Property.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.

Claims (1)

1. a kind of adhesive tape graphite heat conducting and heat radiating fin, graphite heat conducting and heat radiating fin (1) surface is coated with thermally conductive adhesive layer (2), This thermally conductive adhesive layer (2) surface opposite with graphite heat conducting and heat radiating fin (1) is fitted with separated type material layer (3)；It is characterized by: institute Graphite heat conducting and heat radiating fin (1) is stated to be made of Kapton (11), the first coat (12) and the second coat (13), it is described First coat (12), the second coat (13) are located at Kapton (11) upper and lower surfaces；
First coat, the second coat are by graphite modified dosage form at first coat, the second coat are by following heavy Amount part group be grouped as: 22 parts of benzophenone tetracarboxylic dianhydride, 12.5 parts of pyromellitic acid anhydride, 26 parts of diaminodiphenylmethane, 22.5 parts of dimethylformamide, 9.5 parts of N-Methyl pyrrolidone, 2.2 parts of ethylene glycol, 2.8 parts of dimethyl silicone polymer, adjacent benzene 0.9 part of dibutyl carboxylic acid；
The graphite heat conducting and heat radiating fin (1) is obtained by following steps:
Step 1: graphite modified dose of film is obtained in the upper and lower surfaces of Kapton (2), treated that polyimides is thin Film；
Step 2: will treated Kapton under inert gas protection, rise to 240 DEG C ~ 260 DEG C from room temperature, 480 DEG C ~ 500 DEG C are risen to after heat preservation, are warming up to 780 DEG C ~ 820 DEG C after heat preservation again, 1200 DEG C are risen to after heat preservation After cool down, to obtain the carbonized film of pre-burned；
Step 3: rolling the carbonized film of the pre-burned using calender；
Step 4: carbonized film is warming up to 2350 DEG C ~ 2450 DEG C, heat preservation, then after being warming up to 2850 DEG C ~ 2950 DEG C It is cooling, to obtain the graphite film of main firing；
Step 5: the graphite film of resulting main firing is then carried out calendering to obtain the graphite heat conducting and heat radiating fin (1).
CN201511029000.5A 2014-01-26 2014-01-26 Adhesive tape graphite heat conducting and heat radiating fin Active CN105979751B (en)

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CN201410036121.1A Active CN103796493B (en) 2014-01-26 2014-01-26 Thermally conductive graphite patch for adhesive tape and preparation method thereof
CN201610255486.2A Pending CN105860868A (en) 2014-01-26 2014-01-26 Preparation process of heat dissipation lamination film
CN201610250629.0A Active CN105873414B (en) 2014-01-26 2014-01-26 Manufacturing process for graphite heat conducting heat dissipation patch
CN201511028668.8A Active CN105966019B (en) 2014-01-26 2014-01-26 For the heat conduction graphite patch of adhesive tape
CN201610250630.3A Pending CN105860867A (en) 2014-01-26 2014-01-26 Preparation technology of uniform heating rubber belt applied in electronic device
CN201610249636.9A Active CN105860866B (en) 2014-01-26 2014-01-26 Equal thermal bonding tape
CN201511028635.3A Active CN105979750B (en) 2014-01-26 2014-01-26 Flexibility heat conduction graphite patch
CN201511029000.5A Active CN105979751B (en) 2014-01-26 2014-01-26 Adhesive tape graphite heat conducting and heat radiating fin
CN201511014593.8A Active CN105965985B (en) 2014-01-26 2014-01-26 Preparation method for the heat conduction graphite patch of adhesive tape
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CN201610255486.2A Pending CN105860868A (en) 2014-01-26 2014-01-26 Preparation process of heat dissipation lamination film
CN201610250629.0A Active CN105873414B (en) 2014-01-26 2014-01-26 Manufacturing process for graphite heat conducting heat dissipation patch
CN201511028668.8A Active CN105966019B (en) 2014-01-26 2014-01-26 For the heat conduction graphite patch of adhesive tape
CN201610250630.3A Pending CN105860867A (en) 2014-01-26 2014-01-26 Preparation technology of uniform heating rubber belt applied in electronic device
CN201610249636.9A Active CN105860866B (en) 2014-01-26 2014-01-26 Equal thermal bonding tape
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CN107418392A (en) * 2017-08-02 2017-12-01 合肥东恒锐电子科技有限公司 A kind of heat radiation coating of household electrical appliance and preparation method thereof
CN107441619A (en) * 2017-08-17 2017-12-08 成都三乙医疗科技有限公司 A kind of thermal conducting piece for electrotherapy
CN107551392A (en) * 2017-08-29 2018-01-09 成都三乙医疗科技有限公司 A kind of thermal conducting piece for thermotherapy
CN116333692A (en) * 2023-02-13 2023-06-27 深圳市万卓盛科技有限公司 Heat-conducting graphite flake and preparation process thereof

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CN105969223B (en) 2019-01-01
CN105860867A (en) 2016-08-17

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