Solvent-resistant, temperature-resistant, ultra-thin and ultra-sticky insulating matte black electronic-grade polyimide film material

Abstract

The invention discloses a solvent-resistant temperature-resistant ultrathin super-sticky insulating matt black electronic-grade polyimide film material, which comprises a polyimide film, a high-viscosity oily acrylic acid adhesive and PET (Polyethylene Terephthalate) release body paper, and is prepared by the following steps of: dyeing the polyimide film on a photogravure press by using nanoscale insulating matt black ink; the high-viscosity oily acrylic acid adhesive and the corresponding hardening agent are blended according to the proportion of 100: (0.4-1) and placed in a stirrer, the temperature resistance, solvent resistance, insulativity and shading effect of polyimide film materials in the existing market can be enhanced, meanwhile, the thickness of the polyimide film materials is reduced, the polyimide film materials can be suitable for being used on thinner and more precise products, and the use adaptability of the polyimide film materials is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of chemical engineering, in particular to a solvent-resistant and temperature-resistant ultra-thin and ultra-viscous insulating matte black electronic-grade polyimide film material. Background Art

[0002] Today's society is a green and environmentally friendly society. Environmental protection and biodegradability are new technologies pursued by many manufacturing industries and are increasingly valued by all walks of life. This product is a new attempt to integrate environmental protection and natural biodegradable labels into all walks of life. Degradable films not only have the functions and characteristics of traditional plastics, but also can be degraded in the natural environment after reaching the end of their service life through the action of microorganisms in the soil and water or the action of ultraviolet rays in the sun, and finally re-enter the ecological environment in a reduced form and return to nature. Summary of the invention

[0003] The object of the present invention is to provide a solvent-resistant and temperature-resistant ultra-thin and ultra-viscous insulating matte black electronic-grade polyimide film material to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] The solvent-resistant and heat-resistant ultra-thin and super-sticky insulating matte black electronic-grade polyimide film material comprises a polyimide film, a high-viscosity oily acrylic adhesive and a PET release paper. The polyimide film is dyed with a nano-grade insulating matte black ink on a gravure printing machine, the high-viscosity oily acrylic adhesive and its corresponding hardener are mixed in a ratio of 100:(0.4-1), placed in a blender, and stirred evenly, the stirred ultra-sticky oily acrylic adhesive is evenly coated on a release surface of a PET heavy release paper with a release function using a professional scraper coating device, and is completely cured by high-temperature drying, the release surface of the detachable PET release paper is adhered to the other side of the acrylic adhesive, and the prepared product is rolled up to become the temperature-resistant ultra-thin and super-sticky insulating matte black polyimide film material.

[0006] As a further technical solution of the present invention: the printing thickness of the ink is controlled at 4-5μ.

[0007] As a further technical solution of the present invention: the high-viscosity oily acrylic adhesive is 650603 glue, and its chemical formula is: C3H4O2.

[0008] As a further technical solution of the present invention: the hardener is 91# hardener, and its chemical formula is NCOH.

[0009] As a further technical solution of the present invention: the speed of the stirrer is 1200R / S, and the stirring time is 15MIN.

[0010] As a further technical solution of the present invention: the coating thickness is 14 μm.

[0011] As a further technical solution of the present invention: the temperature of the high temperature drying is 110° C. and the time is 3 MIN.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. Insulation (10MM resistance > 1000MΩ), can avoid short circuit and protect electronic equipment or electronic parts;

[0014] 2. Ultra-high adhesion (adhesion>1Kgf / 25mm, national standard GB / T 2792-2014 (20min)) better fit, making it more firmly fitted and increasing the service life of the product;

[0015] 3. Temperature resistance, can work continuously for more than 8 hours in a high temperature environment of 180℃;

[0016] 4. Ultra-thin, the thickness of the surface material + glue is ≤35μ, making it suitable for use on thinner and more precise products.

[0017] 5. Solvent resistance: on a 339 wear resistance testing machine, use a filter cloth to wipe the head and press a 500g weight, add 1mL of alcohol on the surface, and rub back and forth for more than 15 times at a motor speed of 65RUN without wiping off the coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the solvent-resistant and temperature-resistant ultra-thin and ultra-sticky insulating matte black electronic-grade polyimide film material of the present invention.

[0019] In the figure: 1-polyimide film, 2-high viscosity oily acrylic adhesive, 3-PET release paper. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Reference Figure 1 , solvent-resistant and temperature-resistant ultra-thin and ultra-sticky insulating matte black electronic-grade polyimide film material, specifically comprising the following steps:

[0022] 1. The polyimide film is dyed with nano-grade insulating matte black ink on a gravure printing machine, and the ink printing thickness is controlled at 4-5μ to change it from gold to matte black;

[0023] 2. Mix the super sticky oily acrylic adhesive (650603 glue, main chemical formula: C3H4O2) and its corresponding hardener (91# hardener, main chemical formula: NCOH) in a ratio of 100:(0.4-1), place in a blender, and stir at a speed of 1200R / S for 15MIN to make it evenly mixed.

[0024] 3. Use professional scraper coating equipment to evenly coat the super-sticky oily acrylic adhesive stirred evenly in step 2 on the release surface of the PET heavy release backing paper with release function, with a coating thickness of 14μm, and dry it at high temperature (110℃, 3MIN) to fully cure it;

[0025] 4. Use the release surface with a detachable PET release paper to adhere to the other side of the acrylic adhesive, and roll up the prepared product to become a temperature-resistant ultra-thin, ultra-sticky insulating matte black polyimide film material.

[0026] The present invention has the following characteristics:

[0027] 1. Adopt new polyimide film, which has higher temperature resistance; it can withstand high temperature of 230℃ and maintain super adhesion at 230℃ (adhesion>1Kgf / 25mm, national standard GB / T 2792-2014 (20min));

[0028] 2. Dyeing with insulating matte black ink allows it to be printed on the surface, increasing the light-shielding performance, making it more resistant to solvents and insulating; high tensile strength (≥179MPa), good chemical resistance, no residual glue, ROHS environmental protection and halogen-free; ultra-thin, surface material + glue ≤35μ; insulating, resistance value per 10MM is greater than 1000MΩ;

[0029] 3. Use thinly coated super sticky oily acrylic water as adhesive to make it more closely attached to the object; for solvent resistant wiping, use the filter cloth to press a 500g weight on the 339 wear tester, add 1mL of alcohol on the surface, and rub back and forth for more than 15 times at a motor speed of 65RUN without wiping off the coating;

[0030] 4. The thickness of the surface material + glue is ≤35μ, which is at least 10μ thinner than the common products on the market.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0032] In addition, it should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment have also been appropriately combined to form other implementation modes that are easy for those skilled in the art to understand.

Claims

1. Solvent-resistant and temperature-resistant ultra-thin, ultra-sticky insulating matte black electronic-grade polyimide film material, characterized in that: The invention comprises a polyimide film, a high-viscosity oily acrylic adhesive and a PET release paper. The polyimide film is dyed with a nano-grade insulating matte black ink on a gravure printing machine. The high-viscosity oily acrylic adhesive and its corresponding hardener are mixed in a ratio of 100:(0.4-1) and placed in a mixer to be evenly stirred. The evenly stirred super-viscosity oily acrylic adhesive is evenly coated on a release surface of a PET heavy release paper with a release function using a professional scraper coating device, and is completely cured by high-temperature drying. The release surface of the detachable PET release paper is adhered to the other side of the acrylic adhesive, and the prepared product is rolled up to obtain a temperature-resistant ultra-thin, super-viscosity insulating matte black polyimide film material.

2. The solvent-resistant and temperature-resistant ultra-thin and ultra-viscous insulating matte black electronic-grade polyimide film material according to claim 1, characterized in that: The printing thickness of the ink is controlled at 4-5μ.

3. The solvent-resistant and temperature-resistant ultra-thin and ultra-viscous insulating matte black electronic-grade polyimide film material according to claim 1, characterized in that: The high-viscosity oily acrylic adhesive is 650603 glue, and its chemical formula is C3H4O2.

4. The solvent-resistant and temperature-resistant ultra-thin and ultra-viscous insulating matte black electronic-grade polyimide film material according to claim 1, characterized in that: The hardener is 91# hardener, and its chemical formula is NCOH.

5. The solvent-resistant and temperature-resistant ultra-thin and ultra-viscous insulating matte black electronic-grade polyimide film material according to claim 1, characterized in that: The speed of the mixer is 1200 R / S, and the stirring time is 15 MIN.

6. The solvent-resistant and temperature-resistant ultra-thin and ultra-viscous insulating matte black electronic-grade polyimide film material according to claim 1, characterized in that: The coating thickness is 14 μm.

7. The solvent-resistant and temperature-resistant ultra-thin and ultra-viscous insulating matte black electronic-grade polyimide film material according to claim 1, characterized in that: The high temperature drying is performed at 110° C. for 3 minutes.

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