Polyethylene terephthalate (PET) release film replacing graphite sheet protective film and production process thereof

A production process and technology of release film, applied in the direction of coating, etc., can solve the problems of small bubbles on the surface of the finished product, difficulty in separating graphite sheets, and influence on the performance and appearance of graphite sheets, so as to achieve convenient operation, simple production process, and high film surface smooth effect

Inactive Publication Date: 2018-11-16
江阴华美光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main problem of the ordinary protective film is that the flatness of the film surface is not suitable for the exhaust of the graphite sheet during the bonding process, resulting in small air bubbles on the surface of the finished product. It is not easy to separate from the medium, which affects the normal use of the graphite sheet and affects the performance and appearance of the graphite sheet

Method used

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  • Polyethylene terephthalate (PET) release film replacing graphite sheet protective film and production process thereof
  • Polyethylene terephthalate (PET) release film replacing graphite sheet protective film and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A PET release film replacing the graphite sheet protective film, which comprises the following components in parts by weight: 3 parts of D120 solvent oil, 1 part of toluene, 0.5 part of isopropanol, 0.5 part of silicone oil main agent, and 0.2 part of heavy release additive , 0.05 parts of crosslinking agent, 0.01 part of anchoring agent, and 0.01 part of catalyst.

[0027] The production process of the above-mentioned special PET release film instead of the graphite sheet protective film comprises the following steps:

[0028] Step 1. Coating configuration: First, mix D120 solvent oil, toluene, and isopropanol evenly to form a mixed solution as a solvent; then add silicone oil main agent, heavy stripping additive, crosslinking agent, anchoring agent, and catalyst to stir and mix, 1200 Stir for 30 minutes at rpm, filter with a 200-mesh filter, and use within 3 hours; after adding toluene as a solvent in the mixed solvent, it can inhibit the appearance of rainbow pattern...

Embodiment 2

[0035] A PET release film that replaces the graphite sheet protective film, which includes the following components in parts by weight: 8 parts of D120 solvent oil, 3 parts of toluene, 1 part of isopropanol, 1 part of silicone oil main agent, and 0.6 parts of heavy release additive , 0.09 parts of crosslinking agent, 0.01 part of anchoring agent, and 0.01 part of catalyst.

[0036] The preparation process of the above-mentioned PET release film instead of the graphite sheet protective film is the same as in Example 1.

Embodiment 3

[0038] A PET release film replacing the graphite sheet protective film, which comprises the following components in parts by weight: 5 parts of D120 solvent oil, 2 parts of toluene, 0.7 part of isopropanol, 0.7 part of silicone oil main agent, and 0.4 part of heavy peeling additive , 0.07 parts of crosslinking agent, 0.01 part of anchoring agent, and 0.01 part of catalyst.

[0039] The preparation process of the above-mentioned PET release film instead of the graphite sheet protective film is the same as in Example 1.

[0040] Table 1 is the performance comparison between the special PET release film made in Examples 1-3 instead of the graphite sheet protective film and the two common PET release films.

[0041]

[0042]

[0043] As can be seen from Table 1, the light transmittance of the special PET release film replacing the graphite flake protective film produced in Examples 1 to 3 is more than 88%, the haze is below 3.0, and the release force stability (normal temper...

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Abstract

The invention discloses a production process of a polyethylene terephthalate (PET) release film replacing a graphite sheet protective film. The production process comprises the following steps: 1) coating preparation: mixing D120 solvent oil, toluene and isopropanol as a solvent; 2) original membrane treatment: performing corona treatment under the condition of a corona value is larger than 50; performing dust removal treatment with a double-sided dust removal device; 3) precision coating, wherein the gluing traction tension, gluing tension is 100N; 4) drying for curing; 5) receiving and winding, wherein the tension in winding is 200N, and the taper is 50%. The light transmittance of the PET release film applied to the graphite sheet protective film is 88% or more, the mist is 3.0 or lower, and the stability of release force (at room temperature) is 120 g plus or minus 20 g. Under the magnifying glass 100 times, no visible particles or foreign bodies exist, no longitudinal line, waterripple, transverse line and no obvious rainbow line are found, and the film surface is smooth, the aging stability is smaller than 200 g, and the residual adhesion rate is larger than 80%.

Description

technical field [0001] The invention belongs to the technical field of optical protective film preparation, in particular to a PET release film replacing the graphite sheet protective film and a production process for the PET release film replacing the graphite sheet protective film. Background technique [0002] Graphite sheet is a brand-new heat-conducting and heat-dissipating material that conducts heat evenly in two directions, shielding heat sources and components while improving the performance of electronic products. An important function of the heat sink is to create the largest effective surface area on which heat is transferred and carried away by the external cooling medium. The graphite heat sink effectively transfers the heat by evenly distributing the heat on the two-dimensional plane, ensuring that the components work at the temperature they can withstand. A protective film must be used as a carrier during the reproduction, pressing and use of this graphite s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04C08J7/12C09D191/00C09D183/04C08L67/02
CPCC08J7/0427C08J7/123C08J2367/02C09D191/00C08L83/04
Inventor 王上丹吴祥赵伟达陆雁钱超
Owner 江阴华美光电科技有限公司
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