CN105966019B - For the heat conduction graphite patch of adhesive tape - Google Patents

For the heat conduction graphite patch of adhesive tape Download PDF

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Publication number
CN105966019B
CN105966019B CN201511028668.8A CN201511028668A CN105966019B CN 105966019 B CN105966019 B CN 105966019B CN 201511028668 A CN201511028668 A CN 201511028668A CN 105966019 B CN105966019 B CN 105966019B
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China
Prior art keywords
parts
heat conduction
graphite
coat
kapton
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CN201511028668.8A
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Chinese (zh)
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CN105966019A (en
Inventor
金闯
梁豪
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Jiangsu Stick New Materials Polytron Technologies Inc
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Jiangsu Stick New Materials Polytron Technologies Inc
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Priority to CN201511028668.8A priority Critical patent/CN105966019B/en
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    • B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
    • B32B27/281—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polyimides
    • 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
    • C09J2400/00—Presence of inorganic and organic materials
    • C09J2400/10—Presence of inorganic materials

Abstract

A kind of heat conduction graphite patch for adhesive tape of the present invention, heat conduction graphite patch surface is coated with heat conduction adhesive layer, heat conduction graphite patch is made of Kapton, the first coat and the second coat, and the first coat, the second coat are located at the upper and lower surface of Kapton respectively；First coat, the second coat are by being coated on the graphite modified dosage form of Kapton upper and lower surface into the graphite modified dose of component by following parts by weight forms：21 parts of benzophenone tetracarboxylic dianhydride, 13.5 parts of pyromellitic acid anhydride, 22 parts of diaminodiphenylmethane, 20 parts of dimethylformamide, 8.5 parts of N methyl pyrrolidones, 2.4 parts of ethylene glycol, 2.5 parts of dimethyl silicone polymer, 0.85 part of dibutyl phthalate.The present invention avoids hot-spot, while realizing the uniformity of heat conductivility, improves the thermal diffusivity of product, stability, reliability, greatly reduces the cost of product.

Description

For the heat conduction graphite patch of adhesive tape
Technical field
The present invention relates to a kind of heat conduction graphite patches for adhesive tape, belong to graphite flake technical field.
Background technology
As modern microelectronic technology high-speed develops, electronic equipment（Such as laptop, mobile phone, tablet computer）Increasingly Become ultra-thin, light, this structure causes electronic equipment internal power density to significantly improve, and generated heat is not easy in operation It discharges, be easy to accumulate rapidly and form high temperature.On the other hand, high temperature can reduce the performance of electronic equipment, reliability and using the longevity Life.Therefore, Current electronic industry proposes increasingly higher demands for the heat sink material as heat control system core component, urgently A kind of high-efficiency heat conduction, light material is needed to transfer heat away from rapidly, ensures electronic equipment normal operation.
Kapton is mostly used for flexible PCB in the prior art, is obtained although having using polyimide film sintered Graphite heat radiation fin, so as to be covered on heat source, but be constrained to Kapton product quality and performances the good and the bad not Together, the performance of the two-sided pad pasting heat dissipation performance of heat dissipation has been influenced, there are following technical problems：It radiates uneven, adhesive tape easily occurs Hot-spot, the heat dissipation performance that improves product is unstable, reliability performance is poor, is unfavorable for product quality management control, influences product Competitiveness.
Invention content
It is an object of the present invention to provide a kind of heat conduction graphite patch for adhesive tape, which exists Heat conductivility is both vertically and horizontally improved, avoids hot-spot, while realizing the uniformity of heat conductivility, Heat dissipation performance stability, the reliability of product are improved, greatly reduces the cost of product.
To achieve the above object of the invention, the technical solution adopted by the present invention is：A kind of heat conduction graphite patch for adhesive tape, The heat conduction graphite patch surface is coated with the surface fitting opposite with heat conduction graphite patch of heat conduction adhesive layer, this heat conduction adhesive layer There is separated type material layer；The heat conduction graphite patch is made of Kapton, the first coat and the second coat, and first applies Coating, the second coat are located at the upper and lower surface of Kapton respectively；
First coat, the second coat are by being coated on the graphite modified dosage form of Kapton upper and lower surface Into the graphite modified dose of component by following parts by weight forms：21 parts of benzophenone tetracarboxylic dianhydride, pyromellitic acid anhydride 13.5 Part, 22 parts of diaminodiphenylmethane, 20 parts of dimethylformamide, 8.5 parts of N-Methyl pyrrolidone, 2.4 parts of ethylene glycol, poly- diformazan 2.5 parts of radical siloxane, 0.85 part of dibutyl phthalate；
The heat conduction graphite patch is obtained by following steps：
Step 1: the upper and lower surface in Kapton is respectively coated graphite modified dose and obtains treated polyimides Film, graphite modified dose of viscosity is 30000 ~ 48000cP；
Step 2: will treated Kapton under inert gas shielding, rise to 240 DEG C ~ 260 DEG C from room temperature, 480 DEG C ~ 500 DEG C are risen to after heat preservation, is warming up to 780 DEG C ~ 820 DEG C after heat preservation again, 1200 DEG C of postcoolings are risen to after heat preservation, so as to obtain Obtain the carbonized film of pre-burned；
Step 3: roll 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 DEG C postcoolings, So as to obtain the graphite film of main firing；
Step 5: then the graphite film of the main firing of gained is rolled to obtain the heat conduction graphite patch.
Since above-mentioned technical proposal is used, the present invention has following advantages and effect compared with prior art：
1st, the present invention is used for the heat conduction graphite patch of adhesive tape, and graphite linings are coated with one layer of stone by upper and lower surface in structure The Kapton of black modifying agent is prepared, and improves in heat conductivility both vertically and horizontally, avoids adhesive tape Hot-spot realizes the uniformity of adhesive tape heat conductivility；Secondly, be located at graphite modified dose of Kapton surface by 20 ~ 25 parts of benzophenone tetracarboxylic dianhydride, 12 ~ 18 parts of pyromellitic acid anhydride, 20 ~ 28 parts of diaminodiphenylmethane, dimethyl methyl 2 ~ 3 parts of 30 ~ 35 parts of amide, 1.5 ~ 2.5 parts of ethylene glycol, dimethyl silicone polymer compositions, coated on Kapton, are filled Pin hole in heating process, improves crystallinity simultaneously, also overcome be heat-shrinked it is excessive caused by it is uneven, improve graphite Layer biaxial tension performance.
2nd, the present invention is used for the heat conduction graphite patch of adhesive tape, is located at graphite modified dose of Kapton surface by two 20 ~ 25 parts of Benzophenone tetracid dianhydride, 12 ~ 18 parts of pyromellitic acid anhydride, 20 ~ 28 parts of diaminodiphenylmethane, dimethyl formyl 2 ~ 3 parts of 20 ~ 25 parts of amine, 8 ~ 10 parts of N-Methyl pyrrolidone, 1.5 ~ 2.5 parts of ethylene glycol, dimethyl silicone polymer compositions, using two 20 ~ 25 parts of methylformamide, 8 ~ 10 parts of N-Methyl pyrrolidone reduce azeotropic point and smooth boiling point area, improve final The flatness and flexibility of product film forming；Secondly, 20 ~ 25 parts of dimethylformamide, 8 ~ 10 parts of N-Methyl pyrrolidone and adjacent benzene 0.8 ~ 1.5 part of Kapton surface of dibutyl carboxylic acid, prevents bubble from generating, is more advantageous to filled polyimide film Small pin hole improves the uniformity of heat dissipation patch heat conductivility.
3rd, the present invention is used for the preparation method of the heat conduction graphite patch of adhesive tape, between the carbonized film and graphitization of pre-burned Increase calendaring processes and roll again after re-forming heat conduction graphite patch, avoid in fold and graphitization sintering process Volume contraction improves compactness and crystallinity, further improves in heat conductivility both vertically and horizontally.
Description of the drawings
Attached drawing 1 is the heat conduction graphite patch structure diagram that adhesive tape is used for the present invention.
In the figures above：1st, heat conduction graphite patch；11st, Kapton；12nd, the first coat；13rd, the second coating Layer；2nd, heat conduction adhesive layer；3rd, separated type material layer.
Specific embodiment
With reference to embodiment, the invention will be further described：
Embodiment：A kind of heat conduction graphite patch for adhesive tape, 1 surface of heat conduction graphite patch are coated with heat conduction gluing Layer 2, this heat conduction adhesive layer 2 surface opposite with heat conduction graphite patch 1 are fitted with separated type material layer 3；The heat conduction graphite patch 1 It is made of Kapton 11, the first coat 12 and the second coat 13, first coat 12, the second coat 13 It is located at 11 upper and lower surface of Kapton respectively；
First coat, the second coat are by being coated on the graphite modified dosage form of Kapton upper and lower surface Into the graphite modified dose of component by following parts by weight forms：21 parts of benzophenone tetracarboxylic dianhydride, pyromellitic acid anhydride 13.5 Part, 22 parts of diaminodiphenylmethane, 20 parts of dimethylformamide, 8.5 parts of N-Methyl pyrrolidone, 2.4 parts of ethylene glycol, poly- diformazan 2.5 parts of radical siloxane, 0.85 part of dibutyl phthalate；
The heat conduction graphite patch 1 is obtained by following steps：
Step 1: the upper and lower surface in Kapton is respectively coated graphite modified dose and obtains treated polyimides Film, graphite modified dose of viscosity is 30000 ~ 48000cP；
Step 2: will treated Kapton under inert gas shielding, rise to 240 DEG C ~ 260 DEG C from room temperature, 480 DEG C ~ 500 DEG C are risen to after heat preservation, is warming up to 780 DEG C ~ 820 DEG C after heat preservation again, 1200 DEG C of postcoolings are risen to after heat preservation, so as to obtain Obtain the carbonized film of pre-burned；
Step 3: roll 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 DEG C postcoolings, So as to obtain the graphite film of main firing；
Step 5: then the graphite film of the main firing of gained is rolled to obtain the heat conduction graphite patch 1.
During using above-mentioned heat conduction graphite patch for adhesive tape, graphite linings are coated with one layer of stone by upper and lower surface in structure The Kapton of black modifying agent is prepared, and improves in heat conductivility both vertically and horizontally, avoids adhesive tape Hot-spot realizes the uniformity of adhesive tape heat conductivility；Secondly, be located at graphite modified dose of Kapton surface by 20 ~ 25 parts of benzophenone tetracarboxylic dianhydride, 12 ~ 18 parts of pyromellitic acid anhydride, 20 ~ 28 parts of diaminodiphenylmethane, dimethyl methyl 2 ~ 3 parts of 30 ~ 35 parts of amide, 1.5 ~ 2.5 parts of ethylene glycol, dimethyl silicone polymer compositions, coated on Kapton, are filled Pin hole in heating process, improves crystallinity simultaneously, also overcome be heat-shrinked it is excessive caused by it is uneven, improve graphite Layer biaxial tension performance, also reduces azeotropic point and smooth boiling point area, improves the flatness and soft of final products film forming Toughness；Again, Kapton surface has graphite modified dose, improves graphite linings in two-sided pad pasting and is led with heat conduction adhesive layer Hot property, and using the carbonized film of the calender calendering pre-burned, avoid fold and the volume being graphitized in sintering process It shrinks, improves compactness and crystallinity, further improve in heat conductivility both vertically and horizontally；Again, two 20 ~ 25 parts of methylformamide, 8 ~ 10 parts of N-Methyl pyrrolidone and 0.8 ~ 1.5 part of Kapton of dibutyl phthalate Surface prevents bubble from generating, and is more advantageous to the small pin hole of filled polyimide film, improves heat dissipation patch heat conductivility Uniformity.
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 can understand present disclosure and implement according to this, and it is not intended to limit the scope of the present invention.It is all according to the present invention The equivalent change or modification that Spirit Essence is made, should be covered by the protection scope of the present invention.

Claims (1)

1. a kind of heat conduction graphite patch for adhesive tape, the heat conduction graphite patch（1）Surface is coated with heat conduction adhesive layer（2）、 Heat conduction adhesive layer（2）With heat conduction graphite patch（1）Opposite surface is fitted with separated type material layer（3）, it is characterised in that：It is described to lead Hot graphite patch（1）By Kapton（11）, the first coat（12）With the second coat（13）Composition, the first coat （12）, the second coat（13）It is located at Kapton respectively（11）Upper and lower surface；
First coat, the second coat are by being coated on the graphite modified dosage form of Kapton upper and lower surface into should The graphite modified dose of component by following parts by weight forms：21 parts of benzophenone tetracarboxylic dianhydride, 13.5 parts of pyromellitic acid anhydride, 22 parts of diaminodiphenylmethane, 20 parts of dimethylformamide, 8.5 parts of N-Methyl pyrrolidone, 2.4 parts of ethylene glycol, poly dimethyl 2.5 parts of siloxanes, 0.85 part of dibutyl phthalate；
The heat conduction graphite patch（1）It is obtained by following steps：
Step 1: the upper and lower surface in Kapton is respectively coated graphite modified dose and obtains that treated that polyimides is thin Film, graphite modified dose of viscosity is 30000 ~ 48000cP；
Step 2: will treated Kapton under inert gas shielding, rise to 240 DEG C ~ 260 DEG C from room temperature, heat preservation After rise to 480 DEG C ~ 500 DEG C, 780 DEG C ~ 820 DEG C are warming up to after heat preservation again, 1200 DEG C of postcoolings are risen to after heat preservation, it is pre- so as to obtain The carbonized film of firing；
Step 3: roll 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 DEG C postcoolings, so as to Obtain the graphite film of main firing；
Step 5: then the graphite film of the main firing of gained is rolled to obtain the heat conduction graphite patch（1）.
CN201511028668.8A 2014-01-26 2014-01-26 For the heat conduction graphite patch of adhesive tape Active CN105966019B (en)

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CN201410036121.1A Active CN103796493B (en) 2014-01-26 2014-01-26 Heat conduction graphite patch for adhesive tape and preparation method thereof
CN201511014587.2A Active CN105969223B (en) 2014-01-26 2014-01-26 Manufacturing process for equal thermal bonding tape
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
CN201511014593.8A Active CN105965985B (en) 2014-01-26 2014-01-26 Preparation method for the heat conduction graphite patch of adhesive tape
CN201511029000.5A Active CN105979751B (en) 2014-01-26 2014-01-26 Adhesive tape graphite heat conducting and heat radiating fin
CN201511028635.3A Active CN105979750B (en) 2014-01-26 2014-01-26 Flexibility heat conduction graphite patch
CN201610250630.3A Pending CN105860867A (en) 2014-01-26 2014-01-26 Preparation technology of uniform heating rubber belt applied in electronic device
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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
CN201511014593.8A Active CN105965985B (en) 2014-01-26 2014-01-26 Preparation method for the heat conduction graphite patch of adhesive tape
CN201511029000.5A Active CN105979751B (en) 2014-01-26 2014-01-26 Adhesive tape graphite heat conducting and heat radiating fin
CN201511028635.3A Active CN105979750B (en) 2014-01-26 2014-01-26 Flexibility heat conduction graphite patch
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

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