WO2020087759A1 - 一种石墨膜卷材的生产治具以及石墨膜卷材的生产工艺 - Google Patents

一种石墨膜卷材的生产治具以及石墨膜卷材的生产工艺 Download PDF

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WO2020087759A1
WO2020087759A1 PCT/CN2018/125714 CN2018125714W WO2020087759A1 WO 2020087759 A1 WO2020087759 A1 WO 2020087759A1 CN 2018125714 W CN2018125714 W CN 2018125714W WO 2020087759 A1 WO2020087759 A1 WO 2020087759A1
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winding
graphite film
film
plate
bottom plate
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PCT/CN2018/125714
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English (en)
French (fr)
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张孟彤
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上海弘枫实业有限公司
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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/20—Graphite
    • C01B32/205—Preparation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/18—Constructional details
    • B65H75/185—End caps, plugs or adapters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • the invention relates to the technical field of graphite film production, in particular to a production jig for graphite film coils and a production process of graphite film coils.
  • graphite film is a thin film-like thermal conductive material with high thermal conductivity It is widely used in the electronics industry. It can effectively transfer the heat generated by electronic components to radiators and other heat sinks, so that the heat of electronic components can be quickly diffused to reduce the temperature of heat-generating electronic components.
  • the existing manufacturing method of graphite film is obtained by sandwiching a single polymer film in flexible graphite paper for heat treatment.
  • the size of the graphite film is limited, the production efficiency is low, and it is limited in subsequent applications, and the graphite film roll cannot be realized.
  • the mass production of the material; another, the graphite film will produce a large amount of gas during the manufacturing process, and the generated gas needs to be quickly extracted from the surface of the graphite film coil by a vacuum pump.
  • the prior art graphite film is in the production process It can quickly and completely evacuate the generated gas, so that the finished graphite film coil has spots, which reduces the production quality of the graphite film coil.
  • the above-mentioned shortcomings bring greater inconvenience to the production work of the graphite film coil.
  • the purpose of the present invention is to provide a reasonable design, simple structure, high production efficiency, which can realize the mass production of graphite film coils, and at the same time, it can also make graphite film coils in the production A large amount of gas generated is quickly and completely extracted from the surface of the graphite film coil, which improves the production quality of the graphite film coil.
  • the present invention adopts the following technical solutions:
  • a production jig for graphite film roll material including
  • a top plate, the top plate is arranged in parallel above the bottom plate;
  • the utility model is characterized in that at least one winding drum for winding PI film is vertically arranged between the bottom board and the top board, and at least one middle layer is provided between the bottom board and the top board and along the axial interval of the winding drum Plate, the middle plate is sleeved on the winding drum and is divided into at least two mutually independent PI film winding positions for winding the PI film, the middle plate is respectively distributed in parallel with the bottom plate and the top plate, in On the bottom plate and at a position corresponding to the lower end of the winding drum, a lower extraction hole is provided for extracting air. On the top plate and at a position corresponding to the upper end of the winding drum, an upper extraction hole for extracting air is provided.
  • the middle layer plate and a position corresponding to the middle of the winding drum are provided with a middle exhaust hole for exhausting air.
  • six winding reels for winding PI film are vertically arranged between the bottom plate and the top plate, between the bottom plate and the top plate and along the axial direction of the winding roll
  • a middle-layer board is arranged at intervals, and the middle-layer board is sleeved on the six winding reels and divides it into 12 upper and lower independent PI film winding positions for winding PI films.
  • the lower suction hole, the upper suction hole and the middle suction hole are spiral-shaped as a whole, and the spiral direction is the same as the direction of rotation of the vacuum pump during the suction of air.
  • a foot is provided on the lower end of the bottom plate.
  • step 2) Graphitization, the jig passed through step 2) is sent to the graphitization furnace for graphitization, and the jig is still placed vertically during the graphitization process;
  • the carbonization temperature of step 2) is 600-1300 ° C.
  • the carbonization time is 14-20 hours
  • the vacuum environment in the carbonization furnace is 15-9000 Pa.
  • the graphitization temperature in step 3) is 2500-3200 ° C, the time is 5-10 hours, and the environment protected by inert gas in the graphitization furnace.
  • At least one winding reel for winding PI film is vertically arranged between the bottom plate and the top plate, and at least one is provided between the bottom plate and the top plate and along the axial interval of the winding reel Mid-layer board, which is sleeved on the winding drum and separated into at least two independent PI film winding positions for winding PI film.
  • This structure effectively improves the production efficiency of graphite film coil , Can achieve large-scale mass production of graphite film coils; another, on the bottom plate and corresponding to the lower end of the winding drum is provided with a lower exhaust hole for exhaust, on the top plate and corresponding to the upper end of the winding drum There is an upper ventilation hole for ventilation in the position of the center, and a middle ventilation hole for ventilation in the middle plate and a position corresponding to the middle of the winding drum, and the lower ventilation hole, the upper ventilation hole and the central ventilation hole are spiral as a whole The spiral direction is the same as the direction of rotation when the vacuum pump is exhausted.
  • Using this structure can make the large amount of gas generated in the graphite film roll material be quickly and completely extracted from the surface of the graphite film roll material, which improves the graphite film roll. Material Production quality.
  • FIG. 1 is a schematic structural diagram of the present invention.
  • FIG. 2 is a front view of the present invention.
  • Fig. 3 is a right side view of the present invention.
  • FIG. 4 is a top view of the present invention.
  • a jig for producing graphite film roll material shown in the figure includes a bottom plate 100 and a top plate 200.
  • the cross section of the bottom plate 100 is rectangular, and the cross section of the top plate 200 is the same rectangle as the bottom plate 100, and the top plate 200 is disposed in parallel directly above the bottom plate 100.
  • At least one winding drum 300 for winding the PI film is vertically disposed between the bottom plate 100 and the top plate 200.
  • the lower end of the winding drum 300 is fixedly installed on the bottom plate 100 by bolts, and the upper end of the winding drum 300 is fixedly installed by bolts.
  • On the top plate 200 at least one middle layer plate 400 is provided between the bottom plate 100 and the top plate 200 and spaced along the axial direction of the reel 300.
  • the cross section of the middle layer plate 400 is also the same rectangle as the bottom plate 100.
  • the middle plate 400 is sleeved on the winding drum 300 and is divided into at least two independent PI film winding positions 310 for winding the PI film.
  • the middle plate 400 is distributed parallel to the bottom plate 100 and the top plate 200, respectively. This structure effectively improves the production efficiency of the graphite film coil, and can realize the mass production of the graphite film coil.
  • a middle exhaust hole 410 for exhausting air is provided on the middle layer plate 400 and at a position corresponding to the middle of the winding drum 300.
  • the lower suction hole 110, the upper suction hole 210, and the middle suction hole 410 are spiral-shaped as a whole, and the spiral direction is the same as the rotation direction of the vacuum pump used to draw the gas generated in the process of producing the graphite film coil during rotary suction
  • the structure can quickly and completely extract a large amount of gas generated from the graphite film web during the manufacturing process, and improve the production quality of the graphite film web.
  • winding reels 300 for winding the PI film are vertically arranged between the bottom plate 100 and the top plate 200. Between the bottom plate 100 and the top plate 200 and along the axial interval of the winding reel 300, there is a The middle layer plate 400 is sleeved on the six winding reels 300 and is divided into 12 upper and lower independent PI film winding and winding positions 310 for winding the PI film.
  • a foot 120 is provided at the lower end of the bottom plate 100.
  • a production process of graphite film coil includes the following steps:
  • the jig passed step 1) is sent to the carbonization furnace for carbonization, the jig is placed vertically during the carbonization process, the carbonization temperature is 600-1300 ° C, the carbonization time is 14-20 hours, the carbonization furnace The internal vacuum environment is 15 ⁇ 9000Pa;
  • the jig passed step 2) is sent to the graphitization furnace for graphitization, the jig is still placed vertically during the graphitization process, the graphitization temperature is 2500 ⁇ 3200 °C, and the time is 5 ⁇ 10 hours, the environment protected by inert gas in the graphitization furnace;
  • At least one winding drum for winding PI film is vertically arranged between the bottom plate and the top plate, and at least one middle layer plate is provided between the bottom plate and the top plate and along the axial interval of the winding roll.
  • the mid-layer board is sleeved on the winding drum and is divided into at least two independent PI film winding positions for winding the PI film.
  • This structure effectively improves the production efficiency of the graphite film roll material and can be achieved Large-scale mass production of graphite film coils; another, a lower exhaust hole for exhaust air is opened on the bottom plate and corresponding to the lower end of the winding drum, and is opened on the top plate and corresponding to the upper end of the winding drum There is an upper air extraction hole for air extraction, and a middle air extraction hole for air extraction is provided on the middle layer and at a position corresponding to the middle of the winding drum, and the lower air extraction hole, the upper air extraction hole and the middle air extraction hole are spirally formed as a whole, and The direction of the spiral is the same as the direction of rotation when the vacuum pump is pumped.
  • Using this structure can make the large amount of gas generated in the graphite film roll material be quickly and completely extracted from the surface of the graphite film roll material, which improves the production of the graphite film roll material. quality

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  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
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Abstract

一种石墨膜卷材的生产治具，包括底板（100）和顶板（200），顶板（200）平行设置在底板（100）的上方；在底板（100）与顶板（200）之间设有绕卷筒（300），在底板（100）与顶板（200）之间设有至少一中层板（400），中层板（400）套设在绕卷筒（300）上且将其分隔成至少两个相互独立的用于卷绕PI膜的PI膜绕卷位（310），在底板（100）上且与绕卷筒（300）的下端相对应的位置开设有用于抽风的下抽风孔（110），在顶板（200）上且与绕卷筒（300）的上端相对应的位置开设有用于抽风的上抽风孔（210），在中层板（400）上且与绕卷筒（300）的中部相对应的位置开设有用于抽风的中抽风孔（410）。生产效率高，能够实现石墨膜卷材的规模量产，同时还能够使石墨膜卷材在生产制造过程中产生的大量气体快速完全的从石墨膜卷材表面抽离，提高了石墨膜卷材的生产质量。

Description

一种石墨膜卷材的生产治具以及石墨膜卷材的生产工艺 技术领域
本发明涉及石墨膜生产技术领域，特别涉及到一种石墨膜卷材的生产治具以及石墨膜卷材的生产工艺。
背景技术
随着电子工业的不断发展，手机、电脑、液晶电视、以及各种集成电路板中的发热部件对散热的要求越来越高，因此石墨膜作为一种导热率高且呈薄膜状的导热材料在电子工业中得到广泛的应用，它可以有效地将电子部件所产生的热量向散热器等放热体传递，从而将电子部件的热量迅速扩散以降低发热的电子部件的温度。
现有石墨膜的制造方式是将单张的高分子膜夹于柔性石墨纸中进行热处理而得到，但这样石墨膜大小有限，生产效率低，而且在后续应用中受到限制，无法实现石墨膜卷材的规模量产；另一个，石墨膜在生产制造过程中会产生大量的气体，需要通过真空泵将产生的气体快速的从石墨膜卷材表面抽离，现有技术的石墨膜在生产过程中，能够快速完全将产生的气体抽离，使产生完成的石墨膜卷材具有斑点，降低了石墨膜卷材的生产质量，上述不足给石墨膜卷材的生产工作带来了较大的不便。
然而针对现有技术的不足，研发者有必要研制一种设计合理、结构简单、生产效率高，能够实现石墨膜卷材的规模量产，同时还能够使石墨膜卷材在生产制造过程中产生的大量气体快速完全的从石墨膜卷材表面抽离，提高了石墨膜卷材的生产质量的石墨膜卷材的生产治具。
发明内容
为解决现有技术存在的问题，本发明目的提供了一种设计合理、结构简单、生产效率高，能够实现石墨膜卷材的规模量产，同时还能够使石墨膜卷材在生产制造过程中产生的大量气体快速完全的从石墨膜卷材表面抽离，提高了石墨膜卷材的生产质量的石墨膜卷材的生产治具。
为解决以上技术问题，本发明采用以下技术方案来实现的：
一种石墨膜卷材的生产治具，包括
一底板；
一顶板，所述顶板平行设置在底板的上方；
其特征在于，在所述底板与顶板之间垂直设置有至少一用于卷绕PI膜的绕卷筒，在所述底板与顶板之间且沿绕卷筒的轴向间隔设有至少一中层板，所述中层板套设在绕卷筒上且将其分隔成至少两个相互独立的用于卷绕PI膜的PI膜绕卷位，所述中层板分别与底板以及顶板平行分布，在所述底板上且与绕卷筒的下端相对应的位置开设有用于抽风的下抽风孔，在所述顶板上且与绕卷筒的上端相对应的位置开设有用于抽风的上抽风孔，在所述中层板上且与绕卷筒的中部相对应的位置开设有用于抽风的中抽风孔。
在本发明的一个优选实施例中，在所述底板与顶板之间垂直并列设置有六根用于卷绕PI膜的绕卷筒，在所述底板与顶板之间且沿绕卷筒的轴向间隔设有一中层板，所述中层板套设在六根绕卷筒上且将其分隔成上下12个相互独立的用于卷绕PI膜的PI膜绕卷位。
在本发明的一个优选实施例中，所述下抽风孔、上抽风孔与中抽风孔整体呈螺旋形，且螺旋方向与真空泵抽风时的旋转方向相同。
在本发明的一个优选实施例中，在所述底板的下端设有支脚。
一种石墨膜卷材的生产工艺，其特征在于，包括如下步骤：
1)卷材，将PI膜卷绕在如上述所述的石墨膜卷材的生产治具的PI膜绕卷位上，再将天然石墨纸包覆在PI膜卷绕的膜卷外侧；
2)碳化，将通过步骤1)的治具送入到碳化炉内进行碳化，碳化过程中所述治具竖直放置；
3)石墨化，将通过步骤2)的治具送入到石墨化炉内进行石墨化，石墨化过程中所述治具依然竖直放置；
4)开卷收料；
5)压延处理。
在本发明的一个优选实施例中，所述步骤2)的碳化温度为600～1300℃，碳化时间为14～20小时，碳化炉内真空环境为15～9000Pa。
在本发明的一个优选实施例中，所述步骤3)的石墨化温度为2500～3200℃，时间为5～10小时，石墨化炉内惰性气体保护的环境。
与现有技术相比，本发明在底板与顶板之间垂直设置有至少一用于卷绕PI膜的绕卷筒，在底板与顶板之间且沿绕卷筒的轴向间隔设有至少一中层板，中层板套设在绕卷筒上且将其分隔成至少两个相互独立的用于卷绕PI膜的PI膜绕卷位，采用此种结构有效的提高了石墨膜卷材生产效率，能够实现石墨膜卷材的规模量产；另一个，在底板上且与绕卷筒的下端相对应的位置开设有用于抽风的下抽风孔，在顶板上且与绕卷筒的上端相对应的 位置开设有用于抽风的上抽风孔，在中层板上且与绕卷筒的中部相对应的位置开设有用于抽风的中抽风孔，而下抽风孔、上抽风孔与中抽风孔整体呈螺旋形，且螺旋方向与真空泵抽风时的旋转方向相同，采用此种结构能够使石墨膜卷材在生产制造过程中产生的大量气体快速完全的从石墨膜卷材表面抽离，提高了石墨膜卷材的生产质量。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明的结构示意图。
图2为本发明的主视图。
图3为本发明的右视图。
图4为本发明俯视图。
具体实施方式
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解，下面结合具体图示，进一步阐述本发明。
参照图1-图4所示，图中给出的一种石墨膜卷材的生产治具，包括底板100和顶板200。
底板100的横截面为长方形，而顶板200的横截面为与底板100相同的长方形，顶板200平行设置在底板100的正上方。
在底板100与顶板200之间垂直设置有至少一用于卷绕PI膜的绕卷筒300，绕卷筒300的下端通过螺栓固定安装在底板100上，绕卷筒300的上端通过螺栓固定安装在顶板200上，在底板100与顶板200之间且沿绕卷筒300的轴向间隔设有至少一中层板400，中层板400的横截面同样为与底板100相同的长方形。
中层板400套设在绕卷筒300上且将其分隔成至少两个相互独立的用于卷绕PI膜的PI膜绕卷位310，中层板400分别与底板100以及顶板200平行分布，采用此种结构有效的提高了石墨膜卷材生产效率，能够实现石墨膜卷材的规模量产。
在底板100上且与绕卷筒300的下端相对应的位置开设有用于抽风的下抽风孔110，在顶板200上且与绕卷筒300的上端相对应的位置开设有用于抽风的上抽风孔210，在中层 板400上且与绕卷筒300的中部相对应的位置开设有用于抽风的中抽风孔410。
下抽风孔110、上抽风孔210与中抽风孔410整体呈螺旋形，且螺旋方向与用于将生产石墨膜卷材过程中产生的气体抽出的真空泵旋转抽风时的旋转方向相同，采用此种结构能够使石墨膜卷材在生产制造过程中产生的大量气体快速完全的从石墨膜卷材表面抽离，提高了石墨膜卷材的生产质量。
在本实施例中在底板100与顶板200之间垂直并列设置有六根用于卷绕PI膜的绕卷筒300，在底板100与顶板200之间且沿绕卷筒300的轴向间隔设有一中层板400，中层板400套设在六根绕卷筒300上且将其分隔成上下12个相互独立的用于卷绕PI膜的PI膜绕卷位310。
在底板100的下端设有支脚120，采用此种结构能够有效的提高石墨膜卷材的生产治具在生产石墨膜卷材过程中的稳定性能，进一步提高了石墨膜卷材的生产质量。
一种石墨膜卷材的生产工艺，包括如下步骤：
1)卷材，将PI膜卷绕在如上述所述的石墨膜卷材的生产治具的PI膜绕卷位上，再将天然石墨纸包覆在PI膜卷绕的膜卷外侧；
2)碳化，将通过步骤1)的治具送入到碳化炉内进行碳化，碳化过程中所述治具竖直放置，碳化温度为600～1300℃，碳化时间为14～20小时，碳化炉内真空环境为15～9000Pa；
3)石墨化，将通过步骤2)的治具送入到石墨化炉内进行石墨化，石墨化过程中所述治具依然竖直放置，石墨化温度为2500～3200℃，时间为5～10小时，石墨化炉内惰性气体保护的环境；
4)开卷收料；
5)压延处理。
综上所述本发明在底板与顶板之间垂直设置有至少一用于卷绕PI膜的绕卷筒，在底板与顶板之间且沿绕卷筒的轴向间隔设有至少一中层板，中层板套设在绕卷筒上且将其分隔成至少两个相互独立的用于卷绕PI膜的PI膜绕卷位，采用此种结构有效的提高了石墨膜卷材生产效率，能够实现石墨膜卷材的规模量产；另一个，在底板上且与绕卷筒的下端相对应的位置开设有用于抽风的下抽风孔，在顶板上且与绕卷筒的上端相对应的位置开设有用于抽风的上抽风孔，在中层板上且与绕卷筒的中部相对应的位置开设有用于抽风的中抽风孔，而下抽风孔、上抽风孔与中抽风孔整体呈螺旋形，且螺旋方向与真空泵抽风时的旋转方向相同，采用此种结构能够使石墨膜卷材在生产制造过程中产生的大量气体快速完全的从石墨膜卷材表面抽离，提高了石墨膜卷材的生产质量。
以上显示和描述了本发明的基本原理、主要特征和本发明的优点。本行业的技术人员 应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等同物界定。

Claims (7)

  1. 一种石墨膜卷材的生产治具，包括
    一底板；
    一顶板，所述顶板平行设置在底板的上方；
    其特征在于，在所述底板与顶板之间垂直设置有至少一用于卷绕PI膜的绕卷筒，在所述底板与顶板之间且沿绕卷筒的轴向间隔设有至少一中层板，所述中层板套设在绕卷筒上且将其分隔成至少两个相互独立的用于卷绕PI膜的PI膜绕卷位，所述中层板分别与底板以及顶板平行分布，在所述底板上且与绕卷筒的下端相对应的位置开设有用于抽风的下抽风孔，在所述顶板上且与绕卷筒的上端相对应的位置开设有用于抽风的上抽风孔，在所述中层板上且与绕卷筒的中部相对应的位置开设有用于抽风的中抽风孔。
  2. 如权利要求1所述的一种石墨膜卷材的生产治具，其特征在于：在所述底板与顶板之间垂直并列设置有六根用于卷绕PI膜的绕卷筒，在所述底板与顶板之间且沿绕卷筒的轴向间隔设有一中层板，所述中层板套设在六根绕卷筒上且将其分隔成上下12个相互独立的用于卷绕PI膜的PI膜绕卷位。
  3. 如权利要求1所述的一种石墨膜卷材的生产治具，其特征在于：所述下抽风孔、上抽风孔与中抽风孔整体呈螺旋形，且螺旋方向与真空泵抽风时的旋转方向相同。
  4. 如权利要求1所述的一种石墨膜卷材的生产治具，其特征在于：在所述底板的下端设有支脚。
  5. 一种石墨膜卷材的生产工艺，其特征在于，包括如下步骤：
    1)卷材，将PI膜卷绕在如权利要求1至4任意一项权利要求所述的石墨膜卷材的生产治具的PI膜绕卷位上，再将天然石墨纸包覆在PI膜卷绕的膜卷外侧；
    2)碳化，将通过步骤1)的治具送入到碳化炉内进行碳化，碳化过程中所述治具竖直放置；
    3)石墨化，将通过步骤2)的治具送入到石墨化炉内进行石墨化，石墨化过程中所述治具依然竖直放置；
    4)开卷收料；
    5)压延处理。
  6. 如权利要求5所述的一种石墨膜卷材的生产工艺，其特征在于：所述步骤2)的碳化温度为600～1300℃，碳化时间为14～20小时，碳化炉内真空环境为15～9000Pa。
  7. 如权利要求5所述的一种石墨膜卷材的生产工艺，其特征在于：所述步骤3)的石墨化 温度为2500～3200℃，时间为5～10小时，石墨化炉内惰性气体保护的环境。
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