KR20180097873A - Transparent and adhesive anti-static release film containing nano carbon material - Google Patents

Abstract

The present invention is to realize the high transparency and low resistance of a transparent and adhesive anti-static release film using a nano-carbon material for achieving the surface resistance of 10^6-10^7 Ω/cm^2 and the frictional peeling voltage of 1 kV or less, that an existing transparent and adhesive anti-static release film is difficult to achieve.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a transparent adhesive antistatic peeling film and tape containing a nano-

The present invention is based on the application of a nano-carbon material to easily realize a surface resistance of 10 ⁶ -10 ⁷ ? / Cm ² , which is a technical limit of a transparent sticky antistatic peeling film, and satisfies high transparency and low resistance, The present invention relates to achieving a low resistance in which an ion conductor can not be exerted on an existing adhesive resin by using a conduction mechanism of an electron tunneling of a nano-carbon material.

The present invention relates to a transparent adhesive antistatic peeling film, an antistatic peeling film and tape for the same, and more particularly to an antistatic peeling film and tape for supporting and securing an article during processing and packaging of electronic components, And a functional transparent adhesive antistatic peeling film and tape which not only can be easily peeled off by heating, but also have an antistatic effect, an antistatic peeling film and tape for the same, and a manufacturing method thereof.

Background Art [0002] With the recent rapid development of the electronic industry, surface mount type components with high mounting density of electronic components are increasing in size with miniaturization of electronic devices and miniaturization. In particular, products such as wireless chargers, semiconductor wafer dicing, debris polishing, laminated thin film ceramic capacitors (MLCC), ferrite beads, and resistors are used as carrier films in the molding of products due to simplification of process and high efficiency. .

In the conventional electronic component manufacturing process, adhesives, waxes, and the like have been used for temporarily fixing parts for processing parts. However, manual labor and time are required for peeling work, and it is easy to damage parts, There is a problem in that a cleaning operation is required to be carried out, and a lot of adhesive tapes, adhesive films and tapes are used.

Unlike an adhesive, unlike an adhesive, an adhesive film such as an adhesive sheet or an adhesive tape does not require means such as drying and curing. The adhesive strength can be easily obtained only by pressing, and the adhesive can be continuously adhered. .

Such a pressure-sensitive adhesive sheet often peels off after use in a process of an electronic parts factory or the like. In such a case, a pressure-sensitive adhesive sheet having excellent adhesive strength at the time of use and easily peelable after use, that is, have.

Acrylic, urethane and silicone-based adhesive resins are currently used in the adhesive antistatic peeling film currently in use, and a new material is expected to be introduced in order to meet the higher friction voltage from 2015.

As a method of applying a sticking resin after coating a conductive polymer on a base film, a sticky antistatic release film having a certain degree of chargeability is obtained by adding an ion conductor to a sticking resin in the acrylic system and the urethane system, It is very difficult to create by the method and it is waiting for the appearance of a new method or new material.

The nano-carbon materials used in the present invention are single-walled carbon nanotubes and graphenes. Single-walled carbon nanotubes are bundle-shaped materials having a diameter of 1-1.5 nm and a length of several micrometers (탆) It is one of less than 10 layers in one layer. It is a core material of nanomaterial because of its excellent permeability and conductivity.

However, commercialization is not achieved because of "difficulty of dispersion".

Gravure is a core competence of dispersions. Solvent dispersion of single-ply carbon nanotubes and solvent dispersion of graphene allow transparent adhesive antistatic peeling films and tapes to have surface resistances of 10 ⁵ -10 ⁸ Ω / cm ² and less than 1 kV It is possible to easily produce a product having excellent performance of low voltage and low friction voltage.

It is an object of the present invention to provide an electronic device which can be replaced with an electroconductive polymer currently used in an electronic product requiring antistatic treatment and a manufacturing process line, To produce a transparent tacky antistatic peelable film having better triboelectric voltage and surface resistance.

At present, the conductive polymer "pedot" used for electrification prevention in films such as polyester, polyolefin, and polyimide used as a substrate has a conduction mechanism due to migration of ions by a conjugated double bond, The compatibility with the ion conductor in the acrylic and urethane adhesive resins can be exerted to some extent, but it is very difficult to match the physical properties with the silicone adhesive resins.

The present invention has been devised in order to solve these difficulties, and the present invention has been made in order to overcome such difficulties, and it has been proposed that a coating of nano carbon material and a nano carbon coating substitute for a float coating using a dispersion liquid, an additional coating on a pig conductive coating, And it is based on the conduction mechanism through electron tunneling. In addition, it is easy to manufacture transparent sticky antistatic release film and tape, which has the necessary properties to prevent static electricity, which is needed in industry, because it has no production technology and substitutes expensive ion conductor.

Nano-carbon materials are single-walled carbon nanotubes, double-walled carbon nanotubes, and 5- to 10-fold graphene or graphite plates with excellent permeability and transparency. For coating, these nano-carbon materials are dispersed in water, And the internal additive is prepared by dispersing in toluene, methyl ethyl ketone, ethyl acetate or a mixture thereof.

Nanocarbon materials SWNT, DWNT or RGO, GNP, etc. are very small in diameter and thickness, and have a very large specific surface area, so they are bundled together. To use this effectively, a process called dispersion is essential.

In addition, the customized dispersion according to the application is more and more difficult for the current commercialized dispersion technology.

In the present invention, the nanocarbon material is firstly dispersed in a solvent in an amount of 0.1-5% by using a homogenizer.

Then, it is diluted to 0.25% with the same solvent with a rowing homogenizer and dispersed by a high-pressure homogenizer, an ultrasonic wave, an inline mixer with a rotor and a state.

Then, a dispersant is added, and the mixture is homogeneously dispersed in a homogenizer so as to be dispersed in a state of good dispersion.

Then, it is put into a mill machine having 0.1-1.5 mm ceramic balls such as an ultrasonic machine or a basket mill, and the swnt solid content of 0.1-0.5 wt% is treated with a # 3 bar coater to a surface of 10 ³ -10 ⁵ Ω / cm ² It is fully dispersed to be a resistor.

The coating solution prepared by adding the binder to the dispersed solution may be coated on the substrate so as to have a surface resistance of 10 ⁵ -10 ⁷ Ω / cm ² , or may be coated on the conductive polymer coating and then coated with the adhesive resin, The resin is coated to produce a transparent tacky antistatic release film and tape.

The transparent adhesive antistatic peel-off film and tape according to the present invention can directly apply the property values required in a commercial field to the same equipment without any additional process, thereby making it possible to generate economic benefits by cost reduction.

1 is a view showing a tacky antistatic peeling film, wherein No. 1 is an example of a tacky antistatic peeling film according to the prior art, and No. 2, No. 3, No. 4, No. 5 and No. 6 are the peeling films using a conduction mechanism of electron tunneling 1 is a view showing a transparent adhesive antistatic peeling film according to the present invention.
Fig. 2 shows a manufacturing process for making a nano-carbon product.

The present invention relates to a method of producing a nanocarbon dispersion, comprising the steps of: a) adding 0.1 to 5% by weight of nanocarbon powder based on 100% by weight of a solvent to a solvent, Homogenizing with a homogenizer at 2000-6000 rpm for 4-10 hours; b) The product obtained in step a) is diluted by addition of the same solvent and its amount as the solvent used in step a) and the amount thereof under the action of a stirrer and a rowing homogenizer, Homogenizing at 600-1000 bar; 15-20 KHz and 3000-4000 W ultrasonic waves for 2-8 hours; Performing at least one of the processes of treating the in-line mixer at 60 Hz for 2 to 8 hours to adjust the size of the nanocarbon material; c) adding a dispersant to the product obtained in step b) and homogenizing the homogenizer for 4-24 hours to obtain a primary dispersion; d) sonicating the dispersion obtained in step c) for 4 to 8 hours for complete dispersion; And e) diluting under the action of a rowing homogenizer, followed by filtration through a 1-5 占 퐉 filter.

The present invention also relates to a process for the production of a transparent film comprising a nano-carbon coating layer, a conductive polymer coating layer and a base polyester layer of an adhesive resin layer, 5-20 times the same solvent dilution of the dispersion of nanocarbon produced by the method of the present invention, An antistatic peel film is provided.

The present invention also relates to a transparent antistatic release film comprising a pressure-sensitive adhesive resin layer, a nano-carbon coating layer of the same solvent dilution of 3 to 20 times the dispersion of the nano-carbon material produced by the method of the present invention, .

In the transparent antistatic peeling film according to the present invention, the adhesive resin layer further comprises 0.5 to 10 parts by weight of the dispersion of the nano-carbon material prepared by the method according to claim 1 for 100 parts by weight of the adhesive resin and 200 parts by weight of the solvent An adhesive resin layer having a thickness of 1 to 50 mu m, and a thickness of the nanocarbon coating layer may be 50 to 500 nm.

The present invention also relates to a process for producing a nano-carbon-containing adhesive water having a thickness of 1-50 탆 by a mixture of 1-50% by weight of a dispersion of a nano-carbon material produced by the method of the present invention and 50-99% A transparent antistatic peeling film comprising a layer, a conductive polymer coating layer and a base polyester layer is provided.

The present invention also relates to a nano-carbon-containing adhesive resin layer having a thickness of 1 to 50 mu m and a pressure-sensitive adhesive layer having a thickness of 1 to 50 mu m by a mixture of 1-50 wt% of the dispersion of nanocarbon materials produced by the method of the present invention and 50-99 wt% A transparent antistatic peeling film comprising a polyester layer is provided.

The present invention also relates to a process for producing a nano-carbon material comprising a nano-carbon coating layer and a base polyester layer comprising 0.5-50% of 0-10 times solvent dilution of the dispersion of nanocarbon produced by the method of the present invention and 50-99.5% A transparent antistatic release film is provided.

The present invention also relates to a process for the preparation of a nanocarbon coating composition comprising a nanocarbon coating layer and a base polyester layer comprising 0.5-50% of a 0-10 times solvent dilution of the nanocarbon dispersion prepared by the method of the present invention and primer silicone and solvent 50-99.5% A transparent antistatic film is provided.

The solvent used in the process of the present invention is at least one selected from the group consisting of water, isopropyl alcohol, ethyl alcohol, toluene, methyl ethyl ketone, enmethyl-2-pyrrolidone (ENMP), dimethyl sulfoxide, butyl carbitol acetate, Is selected from the group consisting of DME, ethyl acetate, dimethylacetamide, xylene (xylene), ethylcellosolve, cyclohexanone (annon), silicone oil, plasticizer, polyol or a mixture of two or more thereof.

<Dispersion Composition of Nano Carbon>

In the present invention, DUBALL having a purity of 75% of oxyalkylene and niobium having GNP dispersed by heat treatment of expanded graphite were used.

The dispersion of the nano-carbon material used in the present invention is prepared, for example, as follows.

First, the nano-carbon powder is added to the solvent in an amount of 0.5-5% in 10 kg, and after wetting for one or two hours, it is rotated at 2000-5000 rpm for 4-10 hours with a homogenizer to impact, And the like. When treated at less than 2000 rpm, the nano-carbon material is poorly pulverized and homogeneous. When the amount exceeds 5000 rpm, the material overflows at an excessive rotational speed, or is uneconomical due to excessive energy use.

Secondly, dilute to 0.25-3% with agitator and row homogenizer and reduce length and size with high pressure homogenizer, ultrasonic wave, inline mixer and so on.

The high pressure homogenizer was used for crushing, cutting and homogenizing at a pressure of 600-1000 bar of GEA method using an impact bar rather than a nozzle type microfluidizer method. To control the size of the nanocarbon material at less than 600 bar, More than 1000 times, and causes defects of the nano carbon material to affect the physical properties and is also uneconomical due to excessive treatment.

Ultrasonic waves of 3000 to 4000 W of 15-20 KHz are suitable for 5-10 kg of 2-8 hours. In the case of less than 2 hours, it is impossible to control the size of the ultrasonic wave. In the case of more than 8 hours, the defect of nanocarbon material is too short It affects the physical properties and is also uneconomical due to excessive treatment.

The inline mixer was treated at 60 Hz for 0.1 to 8 hours. In the case of less than 0.1 hour, the control of the proper size is impossible. In the case of more than 8 hours, the defect of the nanocarbon material is too short to affect the physical properties.

In addition, it is very effective to use a homogenizer, an ultrasonic wave, and an inline mixer in combination.

Third, after the dispersant was added, the homogenizer was treated at a speed of 2000-5000 rpm for 2-5 hours to sufficiently react the dispersant with the nanocarbon material.

Dispersion agent dispersion and homogeneity of nanocarbon materials are poor when treated at less than 2000 rpm, and when dispersed at 5000 rpm or more, there is a possibility that the dispersant may be thermally damaged at an excessive rotation speed, and the contents may overflow or excess energy Is uneconomical.

Fourth, the dispersant-treated solution was ultrasonically and bead-milled using a # 3 bar coater with a permeability of 85% or more and a surface resistance of 10 ³ -10 ⁴ Ω / cm ² in a 0.2% Time-dispersion processing.

Ultrasonic waves are prepared by processing at 20 KHz at 3000-4000 W for 2-6 hours. In case of less than 2 hours, sufficient dispersion is difficult. In case of more than 6 hours, excessive dispersion time may cause deterioration of dispersant and is also uneconomical.

Bead mills, basket mills, sand mills and Nets mills are suitable for zirconia beads of 0.5-1.5 mm in length, and the dispersion time is proportional to the content of the nanocarbon material, which takes 2-24 hours. When the size of the beads is less than 0.5 mm, it is possible to reduce the time of nano dispersion, but it is difficult to handle in cleaning or cleaning. When the bead size is larger than 1.5 mm, the dispersion time is increased.

Fifth, the dispersion solution is diluted to achieve the required conductivity and treated at 1000 rpm for 1-2 minutes in a row molding homogenizer. The rowing homogenizer has a revolution and a rotation (with a value of 800-1000G) and the solution is homogenized by particle collision and cavitation while the solution rotates inside, so that the conductivity can be conveniently adjusted.

&Lt; Preparation of pressure-sensitive adhesive composition containing nano-carbon material >

A dispersion composition made of 10 ⁴ - 10 ⁵ Ω / cm ² is added to the silicone adhesive in an amount of 5-30%, and then the solvent is added in the amount of 200-300 parts (PHR) to prepare a pressure sensitive adhesive composition.

The viscosity of the composition is suitably from 100 to 5000 cps, preferably from 500 to 4000 cps.

If the viscosity of the composition is less than 100 cps, it is difficult to adjust the thickness due to the low viscosity of the coating, and the uniformity of the coating surface is deteriorated in the secondary coating on the release coating or the conductive primary coating. Above 5000 cps, bubbles tend to form at high viscosity and it is difficult to control the thickness.

As the silicone pressure-sensitive adhesive, an addition reaction-type silicone pressure-sensitive adhesive is suitable, and a crosslinking agent and a catalyst are added to this subject, and an addition reaction inhibitor, a peeling adjustment agent, an adhesion improver and the like can be added as needed.

As the solvent to be used, toluene, ethyl acetate, methyl ethyl ketone or the like may be used and used in combination.

&Lt; Nano Carbon Coating Composition >

To prepare a coating composition having the film surface resistance of 10 ⁵ -10 ⁶ Ω / cm ² , the dispersion composition of the nano-carbon material prepared above was mixed with 100 parts by weight of a solution having a surface resistance of 10 ⁴ -10 ⁵ Ω / cm ² , 500 parts by weight of a solvent, 750 parts by weight, 1000 parts by weight and 1500 parts by weight of a binder were added to PHR, and the mixture was rotated at 1000 rpm for about 1 minute.

The dispersion or coating liquid containing the nano-carbon material can be prepared by dissolving or dispersing in water, an alcohol, ethyl acetate, methyl ethyl ketone, toluene, enmethyl-2-pyrrolidone Is made of DMF, dimethylacetamide, xylene (xylene), ethylcellosolve, cyclohexanone (annon), polyester and ether polyol, phthalate and polymer plasticizer, silicone oil, etc. In the case of water, The resins include polyvinyl alcohol, polyvinyl acetate, polyvinylpyrrolidone, pluronic, tween, hypermer KD, Chartwell series, etc. and solvents include polyvinylpyrrolidone Surfactants such as SDBS, SDS, CTAB, T, N, N-dimethylformamide, N-methylpyrrolidone, WEEN, and can be used by dispersing in vinyl-based silicone oil, silicone oil, phthalate-based and polymer plasticizer, polyester, and ether polyol.

Further, a coating liquid composition comprising a dispersible resin having compatibility and an acrylic, urethane, elastomer, epoxy, silicone, fluorine, PUD, AUD, SBR resin as a binder is prepared.

<Base materials, additives, and coating methods for coating and coating nano-carbon materials>

The base film used for coating and applying the antistatic composition of the present invention is not particularly limited and may be appropriately selected depending on the application among conventionally used ones. Examples of the base film include polyethylene terephthalate, polyethylene, polypropylene, polyvinyl chloride Polyvinyl alcohol, ethylene vinyl acetate copolymer film, polystyrene, polycarbonate, polysulfone, polyether ketone, polyethersulfone, polyphenylsulfite, polyetherimide, polyimide, fluororesin, polyamide, acrylic resin , Cycloolefins, norbornene resin films, and the like.

The thickness of the base film is not particularly limited and is 20-200 占 퐉, preferably 20-120 占 퐉, depending on the application.

Silicone adhesives are classified into high adhesion (KCC SG 6500A) and low adhesion (KCC SC 3300L). The adhesion of antistatic adhesive for process is less than 5 gf / m ² , 10 gf / m ² , 10-20 gf / m ² , 20-30 gf / m ² , and so on.

For example, in 2-5 gf / m ² , 90-50 parts by weight of the dendritic resin is mixed with 10-300 parts by weight (PHR) of a solvent (toluene, ethyl acetate or methyl ethyl ketone) -10 g is applied and finished.

The adhesive resin or adhesive resin layer used to form the transparent antistatic peeling film of the present invention may be an acryl pressure-sensitive adhesive commonly used in the art (Katek KT-1012A) or a layer formed from such a pressure-sensitive adhesive, Butyl acrylate, 2-ethylhexyl acrylate, methyl methacrylate, stearyl methacrylate, dipentaerythritol nohydroxypentaacrylate, dipentaerythritol hexaacrylate, 1,4-butylene glycol Diacrylate, 1,6-hexanediol diacrylate, polyethylene glycol diacrylate, acrylamide, glycidyl methacrylate, 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, 2- Hydroxybutyl methacrylate, polyethylene glycol acrylate, polyethylene &lt; RTI ID = 0.0 &gt; Recall methacrylate and oligo used include polyester acrylate, a polymerizable compound such as acrylate or methacrylate containing a hydroxyl group may be used for reactive. Further, a peroxide such as benzoyl peroxide, which is a reaction promoter, may be used to increase the adhesive strength. Further, a polyvinyl butyral resin, a polyvinyl acetate resin, a polyvinyl alcohol resin, a polyurethane, a rubber-based resin and the like can be added and used.

The curing agent for curing the acrylic pressure-sensitive adhesive used in the present invention may be a mixture of one or more compounds selected from isocyanate-based, methylol-based, and epoxy-based crosslinking agents.

The pressure-sensitive adhesive used for forming the adhesive resin layer constituting the transparent antistatic peeling film of the present invention can be used by dissolving in an organic solvent. Examples of the organic solvent include toluene, xylene, ethyl acetate and alcohols such as ethanol, methanol, isopropanol, propanol And at least one solvent selected from the group consisting of alcohols.

The adhesive resin or adhesive resin layer constituting the transparent antistatic peeling film of the present invention may be a urethane pressure-sensitive adhesive (Katec # 8040K) commonly used in the technical field or a layer formed from such a pressure-sensitive adhesive. Such a urethane pressure- Wherein the polyurethane resin comprises a polyurethane resin obtained by curing a composition containing a polyol (A) and a polyfunctional isocyanate compound (B), wherein the polyurethane resin comprises a polyol (A), a polyfunctional isocyanate compound The NCO group and OH group equivalence ratio "NCO group / OH group" is more than 1.0 and less than 5.0, and usually the antistatic vat based adhesive contains a fluoro organic anion system and an ionic liquid

The peel-off release paper is composed of a cemented release film and a primer coating film formed by coating a silicone for release paper (Shin-Etsu KS 3755, Dow 7226) and a primer silicone (Shin-Etsu KR 3006A, 3006BT) to a thickness of 0.2-1 um.

The conductive polymer coating layer used for forming the transparent antistatic peeling film of the present invention can be obtained by coating a pedot which is one of the conductive polymers with a 1-4% 200-250 g / m ²⁾ coated with a PET film having a thickness of 75-150 μm to a surface resistance of 10 ⁴ -10 ⁶ Ω / cm ² .

As the additive to the silicone pressure-sensitive adhesive, a platinum-based compound and a crosslinking agent such as a polyorganosiloxane, a peel adjustment agent, an adhesion improver, and a photoinitiator are used.

As a commercial solvent, toluene, methyl ethyl ketone, ethyl acetate, alcohol, hexane, cyclohexanone, or a mixture thereof is used as a diluent to adjust viscosity in emulsion form.

If necessary, silica, an antistatic agent, a dye, a pigment and other additives may be added to the silicone pressure-sensitive adhesive composition.

The coating and application methods may be selected from the group consisting of a gravure coater method, a microgravure coater method, a bar coater method, a multi-roll coater method, a comma coater method, a reverse roll coater method, a knife coater method, a roll knife coater method, , A spin coater method, a tip coater method, an air knife coater method, a foam coater method, a spray coater method, and the like, and the mixture is heated and cured at a temperature of about 80-160 DEG C for several tens of seconds to several minutes to form a sticky antistatic peel- .

Example  1: Manufacture of Dispersion Coating Solution and Adhesive for Nano Carbon

Example  1-1: Preparation of Nanocarbon Dispersion Coating Solution

The reactor was charged with 10 kg of a solvent or a mixture of a liquid, water, alcohol, ethyl acetate, toluene, methyl ethyl ketone, N methyl-2-pyrrolidone (ENMP), dimethyl sulfoxide, butyl carbitol acetate, butyl carbitol, (SWNT) and 300 g of GnP were added to DMF, dimethylacetamide, xylene (xylene), ethylcellosolve, cyclohexanone (annon), polyester and ether polyol, silicone oil, phthalate type and polymer plasticizer The homogenizer is subjected to a primary treatment at 2500 rpm for 8 hours.

The primary treated solution is subjected to secondary treatment with an inline mixer at 3000 rpm for 0.1 - 1 hour.

The secondary treated solution is subjected to tertiary treatment with ultrasonic waves for 8 hours.

5 kg of the tertiary-treated solution is put into the reactor, and 5 kg of the solvent is put together, and quartzed with a stirrer and a row molding homogenizer so as to dilute the nano-carbon solid content to 0.25% or 1.5%.

25 g of dispersant and dispersant resin (25 g) in SWNT and 150 g of GnP were added to 10 kg of each fourth diluted water type solution, and the dispersant and dispersion resin were sufficiently reacted with the nanocarbon material by homogenizer for 8 hours, .

As shown in Table 1, the dispersing agent and dispersing resin are subjected to the same fifth treatment.

Table 1: Nano-carbon By each dispersant  Effect of dispersion in water

25 g of dispersant and disperse resin (PVB) were added to 10 kg of the fourth-treated solvent type solution, respectively, and the dispersion and dispersing resin were sufficiently reacted with the nano-carbon material by rotating the homogenizer for 8 hours with 150 g of GnP And the fifth process is performed.

As shown in Table 2, the dispersing agent and the dispersion resin are subjected to the same fifth treatment.

Table 2: Nano-carbon By each dispersant  Dispersion effect in solvent

Each fifth solution is subjected to 6th complete dispersion treatment for 8 hours with ultrasonic wave and bead mill until the surface resistance of the coating film reaches 10 ³ -10 ⁴ Ω / cm ² .

When the film-coated film is coated on the 6th order complete dispersion by a row molding homogenizer capable of high dispersion dilution by revolving and revolving 7 times, 1 kg of a dispersion having a surface resistance of about 10 ^3.5 -10 ⁴ Ω / cm ² is put, 9 kg of solvent is put Turn the product at 1000 rpm for about 4 minutes to adjust the surface resistance of the coating solution to about 10 ⁶ Ω / cm ² for the release film of the adhesive silicone containing nano-carbon.

Table 3: By Nano Carbon Content Properties and  Dilution ratio

* 10 ⁶ dilution: dilution rate at which the surface resistivity of the film is to be 1x10 ⁶ Ω / cm ²

Example 1-2: Production of adhesive resin peeling product containing nano-carbon material and pressure-sensitive adhesive for tape

100 parts by weight (PHR) of acryl, urethane and silicone pressure-sensitive adhesive resin (PHR): 1 part by weight of the additive dispersion (film surface resistance 10 ^2.0 -10 ^5.0 ? / Cm ² ) in the PSN solid content 0.2-1 wt% 100: 1-3, and 100: 3-5, respectively, and 200 parts by weight of methyl ethyl ketone: toluene 50:50 are mixed, and a pressure sensitive adhesive use example 1 having a viscosity of 20 to 5000 cps is prepared.

My cheomyong dispersion (film surface resistance ^{10 2 -10 4 Ω / cm 2} ) of silicon, acrylic, and urethane pressure-sensitive adhesive of 100 parts by weight (PHR), a solvent (MEK, TOLUENE, IPA, EA and mixed) 100 parts by weight, dispersion in cheomyong 20-100 parts by weight of a product, and 1-2 parts by weight of a curing agent and a crosslinking agent are added to prepare an internal pressure sensitive adhesive use example 2-1.

The pressure-sensitive adhesive of Use Example 2-1 was coated on the PET film at 10-40 g / m ² to prepare an antistatic pressure-sensitive adhesive peelable film having an adhesive layer of 20 μm or less.

100 parts by weight of a primer dispersion (film surface resistance 10 ² -10 ⁴ Ω / cm ² ) and 2.5 parts by weight of a primer resin (PHR) of 100 parts by weight, 100 parts by weight, 100 parts by weight and 100 parts by weight, A solvent such as ketone, toluene, ethyl acetate and isopropyl alcohol is used either singly or in combination to prepare a release coating and a primer coating solution of use example 2-2 having a viscosity of 20-5000 cps.

The coating solution of Use Example 2-2 above is coated with <1.5 μm by a bar coater and slot die <2 μm and dried to prepare a release film for antistatic release paper, a release paper for release paper and a primer-coated film.

Table 4. My specialty  adhesive( Silicone, acrylic, urethane ) Examples  One

Table 5. My specialty  adhesive( Silicone, acrylic, urethane ) Examples  2-1

Table 6. Resin coating liquid for release paper Examples  2-2

Solvents: toluene, methyl ethyl ketone, ethyl acetate and isopropyl alcohol

** Drying conditions: 160 ° C, 2 minutes

*** Table 4. After the adhesive resin coating (conductive top) When the surface resistance is less than 10 ⁸ Ω / cm ² ,

**** Table 5. After the adhesive resin coating (on the film) If the surface resistance is less than 10 ⁹ Ω / cm ² , pass or fail.

***** Table 6. After Resin Coating on Film (on film) When the surface resistance is less than 10 ¹⁰ Ω / cm ² , pass or fail.

Example 2: Production of transparent adhesive antistatic peeling film and tape with nano-carbon material

Example 2-1: Primary coating of nano-carbon antistatic coating solution

Film surface resistance after the end surface or both surfaces coated with a nano-carbon material coating solution composition to 1.5 to 5 times with a bar coater microgravure roll-to-roll device to the substrate 75 ㎛ polyester film drying was passed through a heating chamber of 100-160 ℃ 10 ⁵ Make a transparent antistatic peel-off film with -10 ⁶ Ω / cm ² .

Next, a silicone adhesive is applied to one side of 1-30 mu m to prepare a transparent adhesive antistatic peel-off film and tape having a surface resistivity of 10 ⁶ -10 ⁷ ? / Cm ^{2 on} the silicon surface.

Example 2-2: nanocarbon coating liquid composition for the secondary coating and then applying a silicone pressure sensitive adhesive silicone above the surface resistance of 10 ⁶ -10 ⁷ Ω / cm ² transparent tacky antistatic release film of the above coating the conductive polymer coating solution And a tape are manufactured.

Example 2-3 : Preparation of a transparent adhesive antistatic peeling film and tape having a surface resistivity of 10 ⁶ -10 ⁷ ? / Cm ^{2 on} the silicon surface by applying a silicon pressure-sensitive adhesive added with a nano-carbon material after the primary coating of the conductive polymer coating liquid composition do.

Example 2-4 : A nano-carbon material coating liquid composition was coated on a base 75 탆 polyester film using a microgravure roll-to-roll apparatus with a 1.5-5 bar coater or a double-sided coating method and dried through a heating chamber at 100-160 캜 A transparent antistatic peel-off film having a surface resistance of 10 ⁵ -10 ⁶ Ω / cm ² is produced.

Next, 3 to 30 탆 of a silicone adhesive added with a nano-carbon material on one side is coated to produce a transparent adhesive antistatic peel-off film and tape having a surface resistance of 10 ⁶ -10 ⁷ Ω / cm ^{2 on} the silicon surface.

Claims (9)

A method for producing a dispersion of nanocarbons,
a) 0.1 to 5% by weight of nano-carbon powder based on 100% by weight of solvent is added to the solvent and wetted for 1-8 hours, followed by homogenization at 2000-6000 rpm for 4-10 hours Homogenizing;
b) The product obtained in step a) is diluted by addition of the same solvent and its amount as the solvent used in step a) and the amount thereof under the action of a stirrer and a rowing homogenizer, Homogenizing at 600-1000 bar; Treating at 3000-4000 W ultrasonic waves (15-20 KHz) for 2-8 hours; Performing at least one of the processes of treating the in-line mixer at 30 to 60 Hz for 0.1 to 8 hours to adjust the size of the nanocarbon material;
c) adding a dispersant to the product obtained in step b) and homogenizing the homogenizer for 4-24 hours to obtain a primary dispersion;
d) completely dispersing the dispersion obtained in step c) for 4 to 24 hours by treating with ultrasonic waves, a bead mill and a basket mill; And
e) diluting under the action of a rowing homogenizer, followed by filtration or precipitation with a 1-5 占 퐉 filter to produce a dispersion of nanocarbon materials. A transparent antistatic peeling film comprising a nano-carbon coating layer, a conductive polymer coating layer and a base polyester layer of 5-20 times the same solvent diluent as the dispersion of the nano-carbon material produced by the method according to claim 1 . A transparent antistatic peeling film comprising, in order, a pressure-sensitive adhesive resin layer, a nano-carbon coating layer of 3 to 20 times the same solvent dilution as the dispersion of the nano-carbon material produced by the method according to claim 1, and a base polyester layer. The method of claim 3,
A thickness of 1 to 50 占 퐉 formed by additionally containing 0.5 to 10 parts by weight of a dispersion of a nano-carbon material prepared by the method according to claim 1 and a solvent of 200 parts by weight for a pressure-sensitive adhesive resin of 100 parts by weight (PHR) Wherein the nano-carbon coating layer has a thickness of 50 to 500 nm. A nano-carbon-containing adhesive resin layer having a thickness of 1-50 탆 by a mixture of 1-50% by weight of a dispersion of nano-carbon materials produced by the method according to claim 1 and 50-99% by weight of an adhesive resin, A transparent antistatic peeling film comprising a coating layer and a base polyester layer. A nano-carbon-containing adhesive resin layer and a base polyester layer having a thickness of 1-50 탆 by a mixture of 1-50% by weight of a dispersion of a nano-carbon material produced by the method according to claim 1 and 50-99% Including transparent antistatic peel film. Transparent antistatic peeling comprising 0.5-50% of a 0-10-fold dilution of a nano-carbon material dispersion prepared according to the method of claim 1, a nano-carbon coating layer of 50-99.5% solvent and 50-99.5% solvent film. A transparent antistatic film comprising a nano-carbon coating layer and a base polyester layer of 0.5-50% of 0-10 times solvent dilution of the dispersion of nanocarbon produced by the method of claim 1, 50-99.5% of primer silicone and solvent, . The method according to claim 1,
Wherein the solvent is selected from the group consisting of water, isopropyl alcohol, ethyl alcohol, toluene, methyl ethyl ketone, enumethyl-2-pyrrolidone (dimethylamino) Wherein the solvent is selected from the group consisting of acetamide, xylene (xylene), ethylcellosolve, cyclohexanone (annon), silicone oil, plasticizer, polyol or a mixture of two or more thereof.

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