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CN106381083A - Isothermal pressure-sensitive adhesive tape used for intelligent mobile phones - Google Patents

Isothermal pressure-sensitive adhesive tape used for intelligent mobile phones Download PDF

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Publication number
CN106381083A
CN106381083A CN201610799197.9A CN201610799197A CN106381083A CN 106381083 A CN106381083 A CN 106381083A CN 201610799197 A CN201610799197 A CN 201610799197A CN 106381083 A CN106381083 A CN 106381083A
Authority
CN
China
Prior art keywords
graphite
adhesive tape
film
sensitive adhesive
pet film
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610799197.9A
Other languages
Chinese (zh)
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.)
Sidike New Materials Jiangsu Co Ltd
Original Assignee
Sidike New Materials Jiangsu Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sidike New Materials Jiangsu Co Ltd filed Critical Sidike New Materials Jiangsu Co Ltd
Priority to CN201610799197.9A priority Critical patent/CN106381083A/en
Publication of CN106381083A publication Critical patent/CN106381083A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
    • H05K7/205—Heat-dissipating body thermally connected to heat generating element via thermal paths through printed circuit board [PCB]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1207—Heat-activated adhesive
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/0427—Coating with only one layer of a composition containing a polymer binder
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    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
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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
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    • B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
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    • B32B37/156—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is calendered and immediately laminated
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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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
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    • 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
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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
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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
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    • C—CHEMISTRY; METALLURGY
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    • C09J2467/00—Presence of polyester
    • C09J2467/005—Presence of polyester in the release coating

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Thermal Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Inorganic Chemistry (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Adhesive Tapes (AREA)

Abstract

The invention discloses an isothermal pressure-sensitive adhesive tape used for intelligent mobile phones. The adhesive tape comprises a first conducting adhesive layer, a graphite layer and a second conducting adhesive layer; and the graphite layer is obtained through a method. The method comprises the following steps: coating the upper surface and the lower surface of a polyimide film with a layer of a graphite modifier in order to obtain a processed polyimide film; heating the processed polyimide film to 800 DEG C, keeping the temperature, and heating to 1200 DEG C in order to obtain a preburnt carbide film; calendering the preburnt carbinde film through a calendering machine; heating to 2400 DEG C, keeping the temperature, and heating to 2900 DEG C in order to obtain a main burnt graphite film; and calendering the main burnt graphite film in order to obtain the graphite layer. The isothermal pressure-sensitive adhesive tape has the advantages of avoiding of local heating of the adhesive tape, realization of the uniformity of the heat conduction performance of the adhesive tape, improvement of the stability and the reliability of the heat dissipation performance of the product, and great reduction of the cost of the product.

Description

Soaking pressure sensitive adhesive tape for smart mobile phone
Technical field
The present invention relates to a kind of soaking pressure sensitive adhesive tape for smart mobile phone, belong to double faced adhesive chip technology field.
Background technology
The trend of development of computer is to develop lighter and thinner product, and for example, panel computer and notebook computer are more next More popular, because the profile of their dexterities.Due to becoming smaller in size of these products, radiating be all the time one considerable Aspect, high temperature can reduce performance, reliability and the service life of electronic equipment.Therefore, Current electronic industry is for as thermal control The heat sink material of system core part proposes higher and higher requirement, rapid in the urgent need to a kind of high-efficiency heat conduction, light material Transfer heat away from, ensure that electronic equipment normally runs.All backing is a kind of transmission between thermal source and secondary unit The heat exchanger of heat, its surface region and shape are more beneficial for radiating compared with thermal source.By equal backing, the heat being produced by thermal source " diffusion ", to secondary unit, is so eliminated the heat accumulation in thermal source well.
In prior art, Kapton is mostly used for flexible PCB and is obtained using polyimide film sintered although having Obtaining graphite heat radiation fin, thus being covered on thermal source, but being constrained to the good and the bad of the product quality and performances of Kapton not Together, have influence on the performance of radiating two-sided pad pasting heat dispersion, there is following technical problem：Radiating is uneven, adhesive tape easily Hot-spot, the heat dispersion that improve product is unstable, reliability performance is poor, is unfavorable for product quality management control, affects product Competitiveness, how to overcome above-mentioned technical problem become those skilled in the art effort direction.
Content of the invention
It is an object of the present invention to provide a kind of soaking pressure sensitive adhesive tape for smart mobile phone, this is used for the equal hot pressing of smart mobile phone Sensitive tape is both vertically and horizontally all improve heat conductivility, it is to avoid adhesive tape hot-spot is it is achieved that adhesive tape heat conductivity While the uniformity of energy, improve heat dispersion stability, the reliability of product, greatly reduce the cost of product.
For reaching above-mentioned purpose, the technical solution used in the present invention is：A kind of soaking pressure sensitive adhesive tape for smart mobile phone, The two-sided pad pasting of described radiating fits between radiating piece and heat generating components, and the two-sided pad pasting of described radiating includes light strippable PET film With re-release type PET film, between this light strippable PET film and re-release type PET film, it is disposed with the first heat conduction adhesive layer, stone Layer of ink and the second heat conduction adhesive layer；Described graphite linings are obtained by following process, and this process comprises the following steps：
Step one, Kapton is risen to 250 DEG C from room temperature, after rising to 400 DEG C after insulation, be down to room temperature；
Step 2, it is coated with one layer of graphite modified dose of acquisition on the upper and lower surface of the Kapton through step one and processes Kapton afterwards, described graphite modified dose of viscosity is 30000 ~ 48000CP；
The described graphite modified dose of group by following weight portion is grouped into：25 parts of benzophenone tetracarboxylic dianhydride, pyromellitic acid anhydride 17 parts, 22 parts of MDA, 33 parts of dimethylformamide, 1.6 parts of ethylene glycol, 2.7 parts of polydimethylsiloxane；
Step 3, the Kapton after processing is warming up to 800 DEG C, being warming up to 1200 DEG C after insulation, cools down after insulation, Thus obtaining the carbonized film of pre-burned；
Step 4, using calender roll described step 4 pre-burned carbonized film；
Step 5, it is warming up to 2400 DEG C, after insulation, is warming up to 2900 DEG C again, cool down after insulation, thus obtaining the graphite that master fires Film；
The graphite film that the master of step 6 and then step 5 gained fires is rolled thus being obtained described graphite linings.
In technique scheme, further improved scheme is as follows：
1st, in such scheme, described step 4 acquisition graphite film is carried out calendering process.
2nd, in such scheme, the grammes per square metre of described light strippable PET film peeling force is 5 ~ 10g/m2, described re-release type PET The grammes per square metre of film peeling force is 50 ~ 100g/m2.
Because technique scheme is used, the present invention compared with prior art has following advantages and effect：
The present invention is used for the soaking pressure sensitive adhesive tape of smart mobile phone, and in its structure, graphite linings are coated with one layer of graphite by upper and lower surface The Kapton of modifying agent is prepared from, and improves in heat conductivility both vertically and horizontally, it is to avoid adhesive tape office Portion overheated it is achieved that the uniformity of adhesive tape heat conductivility；Secondly, it is located at graphite modified dose of Kapton surface by two Benzophenone tetracarboxylic dianhydride, pyromellitic acid anhydride, MDA, dimethylformamide, ethylene glycol, polydimethylsiloxanes Alkane forms, and is coated on Kapton, is filled with the pin hole in heating process, improves degree of crystallinity simultaneously, also overcome Thermal contraction is excessive lead to uneven, improve graphite linings biaxial tension performance；Again, Kapton surface has graphite Modifying agent, improves graphite linings and heat conduction adhesive layer heat conductivility in two-sided pad pasting, and rolls described pre-burned using calender Carbonized film, it is to avoid the volume contraction in fold and graphitization sintering process, improve compactness and degree of crystallinity, carry further High in heat conductivility both vertically and horizontally.
Brief description
Accompanying drawing 1 is used for the soaking pressure sensitive adhesive tape structural representation of smart mobile phone for the present invention；
Accompanying drawing 2 is used for the soaking pressure sensitive adhesive tape application schematic diagram of smart mobile phone for the present invention；
Accompanying drawing 3 is the partial structural diagram of accompanying drawing 2.
In the figures above：1st, radiating piece；2nd, heat generating components；3rd, light strippable PET film；4th, re-release type PET film；5th, first Heat conduction adhesive layer；6th, graphite linings；7th, the second heat conduction adhesive layer.
Specific embodiment
With reference to embodiment, the invention will be further described：
Embodiment：A kind of soaking pressure sensitive adhesive tape for smart mobile phone, the two-sided pad pasting of described radiating fits in radiating piece 1 and heating Between part 2, the two-sided pad pasting of described radiating includes light strippable PET film 3 and re-release type PET film 4, this light strippable PET film 3 It is disposed with the first heat conduction adhesive layer 5, graphite linings 6 and the second heat conduction adhesive layer 7 and re-release type PET film 4 between；Described stone Layer of ink 6 is obtained by following process, and this process comprises the following steps：
Step one, Kapton is risen to 250 DEG C with 4 ~ 6 degree/min speed from room temperature, keep 0.9 ~ 1.1 hour, then With 2.5 ~ 3.5 degree/min, rise to 400 DEG C, after keeping 1 hour, be down to room temperature；
Step 2, it is coated with one layer of graphite modified dose of acquisition on the upper and lower surface of the Kapton through step one and processes Kapton afterwards, the described graphite modified dose of group by following weight portion is grouped into：25 parts of benzophenone tetracarboxylic dianhydride, all 17 parts of PMDA, 22 parts of MDA, 33 parts of dimethylformamide, 1.6 parts of ethylene glycol, polydimethylsiloxanes 2.7 parts of alkane；
The viscosity of graphite modified dose of embodiment is 35000CP.
Step 3, rise to 800 DEG C with the speed of 4 ~ 6 degree/min, keep 0.9 ~ 1.1 hour；Again with the speed of 9 ~ 11 degree/min Degree rises to 1200 DEG C, cools down, thus obtaining the carbonized film of pre-burned after preserving 0.9 ~ 1.1 hour；
Step 4, using calender roll described step 4 pre-burned carbonized film；
Step 5, rise to 2400 DEG C with the speed of 19 ~ 21 degree/min, keep 0.9 ~ 1.1 hour, then the speed with 19 ~ 21 degree/min Degree rises to 2900 DEG C, cools down after keeping 1.8 ~ 2.2 hours, thus obtaining the graphite film that master fires；
The graphite film that the master of step 6 and then step 5 gained fires is rolled thus being obtained described graphite linings 6.
Described step 6 acquisition graphite linings are carried out calendering process.
The grammes per square metre of above-mentioned light strippable PET film 1 peeling force is 5 ~ 10g/m2, described re-release type PET film 2 peeling force gram It is 50 ~ 100g/m again2.
During using the above-mentioned soaking pressure sensitive adhesive tape for smart mobile phone, in its structure, graphite linings are coated with by upper and lower surface One layer graphite modified dose of Kapton is prepared from, and improves in heat conductivility both vertically and horizontally, keeps away Exempt from adhesive tape hot-spot it is achieved that the uniformity of adhesive tape heat conductivility；Secondly, it is located at the graphite on Kapton surface and changes Property agent by benzophenone tetracarboxylic dianhydride, pyromellitic acid anhydride, MDA, dimethylformamide, ethylene glycol, poly- two Methylsiloxane forms, and is coated on Kapton, is filled with the pin hole in heating process, improves degree of crystallinity simultaneously, Also overcome thermal contraction excessive lead to uneven, improve graphite linings biaxial tension performance；Again, Kapton surface There is graphite modified dose, improve graphite linings and heat conduction adhesive layer heat conductivility in two-sided pad pasting, and institute is rolled using calender State the carbonized film of pre-burned, it is to avoid the volume contraction in fold and graphitization sintering process, improve compactness and degree of crystallinity, Further increase in heat conductivility both vertically and horizontally.
Above-described embodiment only technology design to illustrate the invention and feature, its object is to allow person skilled in the art Scholar will appreciate that present disclosure and implements according to this, can not be limited the scope of the invention with this.All according to the present invention Equivalence changes or modification that spirit is made, all should be included within the scope of the present invention.

Claims (3)

1. a kind of soaking pressure sensitive adhesive tape for smart mobile phone, the two-sided pad pasting of described radiating fits in radiating piece（1）And heating part Part（2）Between, the two-sided pad pasting of described radiating includes light strippable PET film（3）With re-release type PET film（4）, this is gently exfoliated PET film（3）With re-release type PET film（4）Between be disposed with the first heat conduction adhesive layer（5）, graphite linings（6）With the second heat conduction Adhesive layer（7）；It is characterized in that：Described graphite linings（6）Obtained by following process, this process includes following step Suddenly：
Step one, Kapton is risen to 250 DEG C from room temperature, after rising to 400 DEG C after insulation, be down to room temperature；
Step 2, it is coated with one layer of graphite modified dose of acquisition on the upper and lower surface of the Kapton through step one and processes Kapton afterwards, described graphite modified dose of viscosity is 30000 ~ 48000CP；
The described graphite modified dose of group by following weight portion is grouped into：25 parts of benzophenone tetracarboxylic dianhydride, pyromellitic acid anhydride 17 parts, 22 parts of MDA, 30 ~ 35 parts of dimethylformamide, 1.5 ~ 2.5 parts of ethylene glycol, polydimethylsiloxane 2.7 Part；
Step 3, the Kapton after processing is warming up to 800 DEG C, being warming up to 1200 DEG C after insulation, cools down after insulation, Thus obtaining the carbonized film of pre-burned；
Step 4, using calender roll described step 4 pre-burned carbonized film；
Step 5, it is warming up to 2400 DEG C, after insulation, is warming up to 2900 DEG C again, cool down after insulation, thus obtaining the graphite that master fires Film；
The graphite film that the master of step 6 and then step 5 gained fires is rolled thus being obtained described graphite linings（6）.
2. soaking pressure sensitive adhesive tape according to claim 1 it is characterised in that：Described step 4 acquisition graphite linings are pressed Prolong process.
3. soaking pressure sensitive adhesive tape according to claim 1 it is characterised in that：Described light strippable PET film peeling force gram It is 5 ~ 10g/m again2, the grammes per square metre of described re-release type PET film peeling force is 50 ~ 100g/m2.
CN201610799197.9A 2014-01-26 2014-01-26 Isothermal pressure-sensitive adhesive tape used for intelligent mobile phones Pending CN106381083A (en)

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CN201610705947.1A Active CN106304783B (en) 2014-01-26 2014-01-26 Thermal conductivity both-sided adhesive graphite flake
CN201610777909.7A Pending CN106366971A (en) 2014-01-26 2014-01-26 High-heat-conductivity double-sided adhesive tape
CN201610704135.5A Pending CN106281087A (en) 2014-01-26 2014-01-26 Heat-conducting double-sided adhesive tape
CN201610787557.3A Pending CN106520003A (en) 2014-01-26 2014-01-26 Thermal conductive graphite tape used for laptops
CN201610705884.XA Pending CN106332522A (en) 2014-01-26 2014-01-26 High-heat-conductivity graphite film
CN201610700227.6A Pending CN106413340A (en) 2014-01-26 2014-01-26 Heat conducting adhesive film for electronic product
CN201610777925.6A Active CN106427180B (en) 2014-01-26 2014-01-26 Preparation method for the two-sided pad pasting of soaking
CN201410037378.9A Active CN103763892B (en) 2014-01-26 2014-01-26 Heat conduction graphite patch for microelectronic device
CN201610787504.1A Pending CN106520002A (en) 2014-01-26 2014-01-26 Heat-conducting pressure-sensitive double-sided tape
CN201610787521.5A Pending CN106535560A (en) 2014-01-26 2014-01-26 Manufacturing process for heat-conducting graphite paste films for flat computers
CN201610794749.7A Pending CN106398570A (en) 2014-01-26 2014-01-26 High-compactness graphite soaking adhesive tape
CN201610799197.9A Pending CN106381083A (en) 2014-01-26 2014-01-26 Isothermal pressure-sensitive adhesive tape used for intelligent mobile phones
CN201610777537.8A Pending CN106398567A (en) 2014-01-26 2014-01-26 Pressure sensitive adhesive tape for notebook computer
CN201610777340.4A Pending CN106398566A (en) 2014-01-26 2014-01-26 Double-face pad pasting with heat radiation
CN201610696479.6A Pending CN106332521A (en) 2014-01-26 2014-01-26 Manufacturing method for double-sided adhesive graphite flake
CN201610696474.3A Pending CN106318250A (en) 2014-01-26 2014-01-26 Preparation process of thermal double-sided adhesive tape
CN201610777339.1A Pending CN106349964A (en) 2014-01-26 2014-01-26 Process for preparing heat-conduction double-sided adhesive tape
CN201610696862.1A Active CN106304780B (en) 2014-01-26 2014-01-26 Manufacturing process for high thermal conductivity graphite film
CN201610778259.8A Pending CN106634658A (en) 2014-01-26 2014-01-26 Manufacturing process for heat-conducting adhesive tape used for laptop
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CN201610777909.7A Pending CN106366971A (en) 2014-01-26 2014-01-26 High-heat-conductivity double-sided adhesive tape
CN201610704135.5A Pending CN106281087A (en) 2014-01-26 2014-01-26 Heat-conducting double-sided adhesive tape
CN201610787557.3A Pending CN106520003A (en) 2014-01-26 2014-01-26 Thermal conductive graphite tape used for laptops
CN201610705884.XA Pending CN106332522A (en) 2014-01-26 2014-01-26 High-heat-conductivity graphite film
CN201610700227.6A Pending CN106413340A (en) 2014-01-26 2014-01-26 Heat conducting adhesive film for electronic product
CN201610777925.6A Active CN106427180B (en) 2014-01-26 2014-01-26 Preparation method for the two-sided pad pasting of soaking
CN201410037378.9A Active CN103763892B (en) 2014-01-26 2014-01-26 Heat conduction graphite patch for microelectronic device
CN201610787504.1A Pending CN106520002A (en) 2014-01-26 2014-01-26 Heat-conducting pressure-sensitive double-sided tape
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CN201610696479.6A Pending CN106332521A (en) 2014-01-26 2014-01-26 Manufacturing method for double-sided adhesive graphite flake
CN201610696474.3A Pending CN106318250A (en) 2014-01-26 2014-01-26 Preparation process of thermal double-sided adhesive tape
CN201610777339.1A Pending CN106349964A (en) 2014-01-26 2014-01-26 Process for preparing heat-conduction double-sided adhesive tape
CN201610696862.1A Active CN106304780B (en) 2014-01-26 2014-01-26 Manufacturing process for high thermal conductivity graphite film
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