Film pressing device of graphene heat-conducting film and preparation method
A thermal conductive film, graphene technology, applied in flat products, household appliances, other household appliances, etc., can solve the problems of poor thickness consistency, low pressure and pressure ratio, low density of graphite film, etc., to improve output and utilization rate, calendering thickness without bubbles, production efficiency without bubbles
Pending Publication Date: 2021-12-07
CHANGZHOU FUXI TECH CO LTD
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Problems solved by technology
Since the flat stamping process can only be stamped with a single piece or a small number of pieces, mass production cannot be achieved
In the process of continuous stamping, because the plate is deformed by force, the thickness of the stamped graphite film cannot be controlled within a relatively small tolerance range, and the thickness consistency is not good.
Since the pressure and pressure ratio of the single-piece graphite film under force on the entire plane are not large, the density of the punched graphite film is not high.
[0003] Existing calendering equipment adopts rolling method, without the process of vacuuming, it needs to be rolled many times, and there are air bubbles on the surface, it is difficult to drive out the air bubbles
Method used
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[0046] In the following, only some exemplary embodiments are briefly described. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and descriptions are to be regarded as illustrative in nature and not restrictive.
[0047] In describing the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Straight", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", etc. or The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orie...
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Abstract
The invention provides a film pressing device of a graphene heat-conducting film. The device comprises vacuumizing equipment, a vacuum chamber, an upper pressing head and a lower pressing head. The upper pressing head and the lower pressing head are arranged in the vacuum chamber, the vacuumizing equipment vacuumizes the vacuum chamber, and a plurality of layers of graphene foam films are placed on the lower pressing head. The upper pressing head or / and the lower pressing head is / are used for pressing the multiple layers of graphene foam films to obtain the graphene heat-conducting film. The invention also provides a method for preparing the graphene heat-conducting film. According to the method, the high-density bubble-free graphene heat-conducting film can be prepared through calendering.
Description
technical field [0001] The invention belongs to the technical field of graphene heat-conducting films, and in particular relates to a film-pressing device and a preparation method of graphene heat-conducting films. Background technique [0002] The existing compaction process equipment realizes compaction by means of flat plate stamping. Since the flat stamping process can only be a single piece or a few pieces of stamping, mass production cannot be achieved. In the process of continuous stamping, because the flat plate is deformed by force, the thickness of the stamped graphite film cannot be controlled within a relatively small tolerance range, and the thickness consistency is not good. Because the pressure and pressure ratio of the single graphite film under force on the whole plane are not large, the density of the graphite film punched out is not high. [0003] Existing calendering equipment adopts the rolling method, without the process of vacuuming, it needs multipl...
Claims
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IPC IPC(8): B29C43/02B29C43/00B29C43/32B29C43/36B29C43/56B29C43/58B29L7/00
CPCB29C43/02B29C43/003B29C43/32B29C43/36B29C43/56B29C43/58B29C2043/563B29L2007/002
Inventor 周仁杰周步存周玉峰
Owner CHANGZHOU FUXI TECH CO LTD