CN106318250A - Preparation process of thermal double-sided adhesive tape - Google Patents

Preparation process of thermal double-sided adhesive tape Download PDF

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Publication number
CN106318250A
CN106318250A CN201610696474.3A CN201610696474A CN106318250A CN 106318250 A CN106318250 A CN 106318250A CN 201610696474 A CN201610696474 A CN 201610696474A CN 106318250 A CN106318250 A CN 106318250A
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CN
China
Prior art keywords
heat
adhesive tape
graphite
film
sided adhesive
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
CN201610696474.3A
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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 CN201610696474.3A priority Critical patent/CN106318250A/en
Publication of CN106318250A publication Critical patent/CN106318250A/en
Pending legal-status Critical Current

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    • 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]
    • 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
    • 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
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • 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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    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B32B37/02—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
    • 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
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    • B32B37/15—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
    • B32B37/153—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 extruded and immediately laminated while in semi-molten state
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    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/15—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
    • 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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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/045—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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    • C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
    • C04B35/522—Graphite
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    • C04B35/524—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from polymer precursors, e.g. glass-like carbon material
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B35/62218—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products obtaining ceramic films, e.g. by using temporary supports
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    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
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    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
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    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
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    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/66—Specific sintering techniques, e.g. centrifugal sintering
    • C04B2235/661—Multi-step sintering
    • C—CHEMISTRY; METALLURGY
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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
    • 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
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    • C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
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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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    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • 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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    • C09J2400/00—Presence of inorganic and organic materials
    • C09J2400/10—Presence of inorganic materials
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    • C09J2400/00—Presence of inorganic and organic materials
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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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    • 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)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (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 a preparation process of a thermal double-sided adhesive tape. A thermal double-sided film is attached between a radiating part and a heating part and includes a light release PET (polyethylene terephthalate) film and a heavy release PET film, a first thermal adhesive layer, a graphite layer and a second thermal adhesive layer are arranged sequentially between the light release PET layer and the heavy release PET layer, and the graphite layer provides a graphite modifier layer for each of the upper and lower surfaces of polyimide film to obtain treated polyimide film, the graphite modifier has a viscosity of 30000-48000 CP, and the graphite modifier is made from, by weight, benzophenonetetracarboxylic dianhydride, pyromellitic dianhydride, diaminodiphenylmethane, dimethylformamide, ethylene glycol, and polydimethylsiloxane. The adhesive tape is avoided being partially superheated, thermal transfer uniformity of the adhesive tape is achieved, and radiating property stability for the adhesive tape is improved.

Description

The preparation technology of heat-conducting double-sided adhesive tape
Technical field
The present invention relates to the preparation work of a kind of heat-conducting double-sided adhesive tape, belong to double faced adhesive chip technology field.
Background technology
Along with modern microelectronic technology high-speed develops, electronic equipment (such as notebook computer, mobile phone, panel computer etc.) is day by day Becoming ultra-thin, light, this structure makes electronic equipment internal power density significantly improve, and in operation, produced heat is difficult to Discharge, be prone to accumulate rapidly and form high temperature.On the other hand, high temperature can reduce the performance of electronic equipment, reliability and use longevity Life.Therefore, Current electronic industry is for proposing the highest requirement as the heat sink material of heat control system core component, urgently Need a kind of high-efficiency heat conduction, light material to transfer heat away from rapidly, ensure that electronic equipment is properly functioning.
In prior art, Kapton is mostly used for flexible PCB, although has and uses polyimide film sintered obtaining Obtain graphite heat radiation fin, thus be covered on thermal source, but be constrained to the good and the bad of the product quality and performances of Kapton not Together, have influence on the performance of heat radiation two-sided pad pasting heat dispersion, there is techniques below problem: dispel the heat uneven, adhesive tape easily occurs Hot-spot, the heat dispersion that improve product is unstable, reliability performance is poor, is unfavorable for product quality management control, affects product Competitiveness.
Summary of the invention
It is an object of the present invention to provide the preparation technology of a kind of heat-conducting double-sided adhesive tape, the bond plies that this preparation technology obtains Band is the most all improve heat conductivility, it is to avoid adhesive tape hot-spot, it is achieved that adhesive tape heat conductivility While uniformity, improve the heat dispersion stability of product, reliability, greatly reduce the cost of product.
For reaching above-mentioned purpose, the technical solution used in the present invention is: the preparation work of a kind of heat-conducting double-sided adhesive tape, described scattered The two-sided pad pasting of heat fits between radiating piece and heat generating components, and the two-sided pad pasting of described heat radiation includes light strippable PET film and heavily shells Release PET film, be disposed with between this light strippable PET film and weight strippable PET film the first heat-conducting glue adhesion coating, graphite linings and Second heat-conducting glue adhesion coating；Described graphite linings 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, near room temperature after keeping 1 hour；
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 After Kapton, the viscosity of described graphite modified dose is 30000 ~ 48000CP；
Described graphite modified dose is made up of the component of following weight portion: benzophenone tetracarboxylic dianhydride 23.5 parts, Pyromellitic Acid two Acid anhydride 16 parts, MDA 25 parts, dimethylformamide 32.5 parts, ethylene glycol 2.5 parts, polydimethylsiloxane 2.5 Part；
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 liter of 9 ~ 11 degree/min To 1200 DEG C, cool down after preserving 0.9 ~ 1.1 hour, thus obtain the carbonized film of pre-burned；
Step 4, employing calender roll the carbonized film of the pre-burned of described step 4；
Step 5, rise to 2400 DEG C, insulation, then rise to 2900 DEG C, cool down after keeping 1.8 ~ 2.2 hours, thus obtain to lead and fire Graphite film；
Step 6, the graphite film that then master of step 3 gained fires carry out rolling thus obtain described graphite linings.
In technique scheme, further improved plan is as follows:
1., in such scheme, described step 4 acquisition graphite film is carried out calendering process.
2., in such scheme, the grammes per square metre of described light strippable PET film peeling force is 5 ~ 10g/m2。
3. in such scheme, rising to 2400 DEG C with the speed of 19 ~ 21 degree/min in described step 5, holding 0.9 ~ 1.1 is little Time, then rise to 2900 DEG C with the speed of 19 ~ 21 degree/min, cool down after keeping 1.8 ~ 2.2 hours, thus obtain the main graphite fired Film.
Owing to technique scheme is used, the present invention compared with prior art has following advantages and an effect:
The preparation technology of heat-conducting double-sided adhesive tape of the present invention, in its structure graphite linings by upper and lower surface be coated with one layer graphite modified The Kapton of agent is prepared from, and improves at heat conductivility both vertically and horizontally, it is to avoid adhesive tape local mistake Heat, it is achieved that the uniformity of adhesive tape heat conductivility；Secondly, it is positioned at graphite modified dose of Kapton surface by hexichol first Ketone tetracarboxylic dianhydride, pyromellitic acid anhydride, MDA, dimethylformamide, ethylene glycol, polydimethylsiloxane group Become, be coated on Kapton, the pin hole being filled with in heating process, improve degree of crystallinity simultaneously, also overcome heat receipts Contract excessive cause uneven, improve graphite linings biaxial tension performance；Again, Kapton surface has graphite modified Agent, improves graphite linings and heat-conducting glue adhesion coating heat conductivility in two-sided pad pasting, and uses calender to roll the carbon of described pre-burned Change film, it is to avoid the volume contraction in fold and graphitization sintering process, improve compactness and degree of crystallinity, further increase At heat conductivility both vertically and horizontally.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described:
Embodiment: the preparation technology of a kind of heat-conducting double-sided adhesive tape, described heat-conducting double-sided adhesive tape fits in radiating piece and heat generating components Between, described heat-conducting double-sided adhesive tape includes light strippable PET film and weight strippable PET film, this light strippable PET film and heavily peeling off The first heat-conducting glue adhesion coating, graphite linings and the second heat-conducting glue adhesion coating it is disposed with between type PET film；Described graphite linings is by following Process obtains, 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 After Kapton, described graphite modified dose is made up of the component of following weight portion, as shown in table 1:
Table 1
Embodiment
Benzophenone tetracarboxylic dianhydride 23.5
Pyromellitic acid anhydride 16
MDA 25
Dimethylformamide 32.5
Ethylene glycol 2.5
Polydimethylsiloxane 2.5
The viscosity of graphite modified dose of embodiment is 38000CP.
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 obtain the carbonized film of pre-burned after preserving 0.9 ~ 1.1 hour；
Step 4, employing calender roll the carbonized film of the pre-burned of described step 4；
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 obtains the main graphite film fired；
Step 6, the graphite film that then master of step 5 gained fires carry out rolling thus obtain described graphite linings.
Described step 6 acquisition graphite linings is carried out calendering process.
The grammes per square metre of above-mentioned light strippable PET film 1 peeling force is 5 ~ 10g/m2, described heavy strippable PET film 2 peeling force gram It is heavily 50 ~ 100g/m2。
When using the preparation technology of above-mentioned heat-conducting double-sided adhesive tape, in its structure, graphite linings is coated with one layer by upper and lower surface The Kapton of graphite modified dose is prepared from, and improves at heat conductivility both vertically and horizontally, it is to avoid glue Band hot-spot, it is achieved that the uniformity of adhesive tape heat conductivility；Secondly, it is positioned at graphite modified dose of Kapton surface By benzophenone tetracarboxylic dianhydride, pyromellitic acid anhydride, MDA, dimethylformamide, ethylene glycol, poly dimethyl Siloxanes forms, and is coated on Kapton, the pin hole being filled with in heating process, improves degree of crystallinity simultaneously, also gram Taken thermal contraction excessive cause uneven, improve graphite linings biaxial tension performance；Again, Kapton surface has Graphite modified dose, improve graphite linings and heat-conducting glue adhesion coating heat conductivility in two-sided pad pasting, and use calender calendering described pre- The carbonized film fired, it is to avoid the volume contraction in fold and graphitization sintering process, improves compactness and degree of crystallinity, enters one Step improves at heat conductivility both vertically and horizontally.
Above-described embodiment, only for technology design and the feature of the explanation present invention, its object is to allow person skilled in the art Scholar will appreciate that present disclosure and implements according to this, can not limit the scope of the invention with this.All according to the present invention The equivalence that spirit is made changes or modifies, and all should contain within protection scope of the present invention.

Claims (4)

1. a preparation technology for heat-conducting double-sided adhesive tape, described heat-conducting double-sided adhesive tape fits between radiating piece and heat generating components, Described heat-conducting double-sided adhesive tape includes light strippable PET film and weight strippable PET film, this light strippable PET film and weight strippable PET The first heat-conducting glue adhesion coating, graphite linings and the second heat-conducting glue adhesion coating it is disposed with between film；It is characterized in that: described graphite linings is led to Crossing following process to obtain, 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, near room temperature after keeping 1 hour；
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 After Kapton, the viscosity of described graphite modified dose is 30000 ~ 48000CP；
Described graphite modified dose is made up of the component of following weight portion: benzophenone tetracarboxylic dianhydride 23.5 parts, Pyromellitic Acid two Acid anhydride 16 parts, MDA 25 parts, dimethylformamide 32.5 parts, ethylene glycol 2.5 parts, polydimethylsiloxane 2.5 Part；
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 liter of 9 ~ 11 degree/min To 1200 DEG C, cool down after preserving 0.9 ~ 1.1 hour, thus obtain the carbonized film of pre-burned；
Step 4, employing calender roll the carbonized film of the pre-burned of described step 4；
Step 5, rise to 2400 DEG C, insulation, then rise to 2900 DEG C, cool down after keeping 1.8 ~ 2.2 hours, thus obtain to lead and fire Graphite film；
Step 6, the graphite film that then master of step 3 gained fires carry out rolling thus obtain described graphite linings.
The preparation technology of heat-conducting double-sided adhesive tape the most according to claim 1, it is characterised in that: described step 4 is obtained stone Layer of ink (6) carries out calendering process.
The preparation technology of heat-conducting double-sided adhesive tape the most according to claim 1, it is characterised in that: described light strippable PET film (1) grammes per square metre of peeling force is 5 ~ 10g/m2。
The preparation technology of heat-conducting double-sided adhesive tape the most according to claim 1, it is characterised in that: in described step 5 with 19 ~ The speed of 21 degree/min rises to 2400 DEG C, keeps 0.9 ~ 1.1 hour, then rises to 2900 DEG C with the speed of 19 ~ 21 degree/min, keeps Cool down after 1.8 ~ 2.2 hours, thus obtain the main graphite film fired.
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CN201610696475.8A Pending CN106318251A (en) 2014-01-26 2014-01-26 Manufacture method of thermal transfer film
CN201610794749.7A Pending CN106398570A (en) 2014-01-26 2014-01-26 High-compactness graphite soaking adhesive tape
CN201610777339.1A Pending CN106349964A (en) 2014-01-26 2014-01-26 Process for preparing heat-conduction double-sided adhesive tape
CN201610705947.1A Active CN106304783B (en) 2014-01-26 2014-01-26 Thermal conductivity both-sided adhesive graphite flake
CN201610777925.6A Active CN106427180B (en) 2014-01-26 2014-01-26 Preparation method for the two-sided pad pasting of soaking
CN201610778259.8A Pending CN106634658A (en) 2014-01-26 2014-01-26 Manufacturing process for heat-conducting adhesive tape used for laptop
CN201610777909.7A Pending CN106366971A (en) 2014-01-26 2014-01-26 High-heat-conductivity double-sided adhesive tape
CN201610700227.6A Pending CN106413340A (en) 2014-01-26 2014-01-26 Heat conducting adhesive film for electronic product
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CN201610777340.4A Pending CN106398566A (en) 2014-01-26 2014-01-26 Double-face pad pasting with heat radiation
CN201610799197.9A Pending CN106381083A (en) 2014-01-26 2014-01-26 Isothermal pressure-sensitive adhesive tape used for intelligent mobile phones
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CN201610696475.8A Pending CN106318251A (en) 2014-01-26 2014-01-26 Manufacture method of thermal transfer film
CN201610794749.7A Pending CN106398570A (en) 2014-01-26 2014-01-26 High-compactness graphite soaking adhesive tape
CN201610777339.1A Pending CN106349964A (en) 2014-01-26 2014-01-26 Process for preparing heat-conduction double-sided adhesive tape
CN201610705947.1A Active CN106304783B (en) 2014-01-26 2014-01-26 Thermal conductivity both-sided adhesive graphite flake
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CN201610700227.6A Pending CN106413340A (en) 2014-01-26 2014-01-26 Heat conducting adhesive film for electronic product
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CN201610777340.4A Pending CN106398566A (en) 2014-01-26 2014-01-26 Double-face pad pasting with heat radiation
CN201610799197.9A Pending CN106381083A (en) 2014-01-26 2014-01-26 Isothermal pressure-sensitive adhesive tape used for intelligent mobile phones
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