JP6442360B2 - Composite and production method thereof - Google Patents

Description

  The present invention relates to a composite obtained by fixing a thermoplastic resin to a solid excluding an inert metal and a method for producing the same.

  As a technique for obtaining a composite by fixing a thermoplastic resin to a solid such as metal, for example, Patent Document 1 proposes to insert a metal into an injection mold and perform injection molding of the thermoplastic resin. Yes.

JP 2012-213925 A

  In the method of obtaining a composite by injection molding, it is necessary to individually produce an expensive injection mold according to the shape of the composite. Also, if the cavity forming part of the injection mold and the solid do not sufficiently adhere around the thermoplastic resin molded part, and a gap is formed between them, the molten thermoplastic resin will leak out, In order to suppress this, it is necessary to manufacture both the injection mold and the solid with high accuracy. Since both the injection mold and the solid need to be prepared, the manufacturing process becomes complicated and the manufacturing cost increases. In particular, this effect becomes even more pronounced when many types of composites are produced in small quantities. In addition, since an injection mold is used, the shape of the composite that can be formed is limited.

  The present invention has been made to solve the above-described problems, and can be easily and inexpensively manufactured by a simple process without using an injection mold. Another object of the present invention is to provide a composite and a method for producing the same.

In order to achieve the above object, the present invention is a composite in which a thermoplastic resin is fixed to a solid fixing site excluding an inert metal, and a SiOx glass film is formed on the surface of the solid. The glass film comprises a water repellent part having a contact angle of 130 ° or more when evaluated with water, and a hydrophilic part having a hydroxyl group density larger than the water repellent part and the contact angle of 20 ° or less. The hydrophilic part is formed at the fixing part of the glass film, and the water repellent part is formed at the remaining part of the glass film, and the thermoplastic resin is fixed on the glass film. while selectively projecting from the site, and wherein Rukoto to have a curved edge. In the present invention, the inert metal refers to a metal having higher ionization energy than hydrogen.

  In the composite according to the present invention, a water-repellent part and a hydrophilic part, each having a contact angle set as described above, are formed on a glass film provided on a solid surface. When a molten thermoplastic resin is brought into contact with such a glass film, the thermoplastic resin is likely to be repelled in the water-repellent part, while the hydrophilic part is easily wetted (accommodate easily) with the thermoplastic resin. ing. Therefore, by providing the hydrophilic portion only in the portion (fixed portion) to which the thermoplastic resin is fixed in the glass film, the molten thermoplastic resin can be preferentially guided to the hydrophilic portion. As a result, the composite can be obtained by fixing the thermoplastic resin to the fixing portion without using, for example, injection molding using an injection mold. That is, the composite according to the present invention can be easily produced at a low cost without using an injection mold, and is also suitable for producing many kinds in small amounts.

  In the above composite, the glass film is preferably a deposited layer of glass fine particles. Such a glass film has fine irregularities on the surface. As a result, the water-repellent part provided on the glass film repels the molten thermoplastic resin more satisfactorily, and the hydrophilic part conforms more favorably to the thermoplastic resin. Therefore, it becomes possible to produce a composite more easily and with high accuracy.

Further, the present invention is a method for producing a composite by fixing a thermoplastic resin to a solid fixing site excluding an inert metal to obtain a composite, and the contact angle when the surface of the solid is evaluated with water Applying a first surface treatment for forming a SiOx-based glass film comprising a water repellent portion having an angle of 130 ° or more, and applying a second surface treatment for chemically modifying a hydroxyl group only at the fixing site in the glass film it makes the steps of changing the solid deposition site in the hydrophilic portion and the contact angle is 20 ° or less, by melting powdered the thermoplastic resin disposed on the glass layer containing at least the anchor site molten Fixing the thermoplastic resin to the fixing part by guiding the melt to the hydrophilic part due to the difference in the contact angle between the water repellent part and the hydrophilic part, and then solidifying the melt. Having Features.

  In the method for producing a composite according to the present invention, first, a glass film composed of a water-repellent part is formed by applying a first surface treatment to a solid surface. Next, the second surface treatment is performed only on the fixing portion of the glass film, thereby chemically modifying the hydroxyl group to change it into a hydrophilic portion. As a result, in the glass film, only the fixing part becomes a hydrophilic part that is easily compatible with the molten thermoplastic resin, and the part excluding the fixing part becomes a water-repellent part that is easy to play the thermoplastic resin. Therefore, the thermoplastic resin can be preferentially guided to the fixing part by melting the thermoplastic resin on the fixing part or on the part including the fixing part and the vicinity thereof. By solidifying the thermoplastic resin in this state, a composite in which the thermoplastic resin is fixed to the fixing site can be obtained. That is, in the method for producing a composite according to the present invention, it can be easily produced at a low cost without using an injection mold, and even when many types are produced little by little. It can be suitably applied.

  In the manufacturing method of the composite, the water-repellent part and the hydrophilic part are formed by performing the second surface treatment in a state where a template that exposes only the fixing part is disposed on the glass film. It is preferable to do. In this case, the composite can be obtained easily and at a low cost by a simpler process.

  In the composite manufacturing method, the first surface treatment preferably forms the glass film by depositing glass fine particles on the surface of the solid. This makes it possible to produce a composite more easily and with high accuracy.

  According to the present invention, a composite can be obtained by fixing a thermoplastic resin to a solid fixing site without using injection molding using an injection mold. For this reason, it is possible to produce a composite easily and at low cost by a simple process, and the effect can be obtained more remarkably particularly when many kinds are produced in small quantities.

1A is a schematic plan view of the composite according to the present embodiment, and FIG. 1B is a cross-sectional view taken along the line IB-IB in FIG. 1A. It is a principal part schematic longitudinal cross-sectional view of the plasma generator used in the process of obtaining the composite_body | complex of FIG. 1A and FIG. 1B. 3A is a schematic plan view of a solid having a glass film formed on the surface, and FIG. 3B is a cross-sectional view taken along line IIIB-IIIB in FIG. 3A. 4A is a schematic plan view of a solid in which a template is arranged on a glass film, and FIG. 4B is a cross-sectional view taken along line IVB-IVB in FIG. 4A. FIG. 5A is a schematic plan view of a solid in which a hydrophilic portion is formed at an adhering site, and FIG. 5B is a cross-sectional view taken along line VB-VB in FIG. 5A. FIG. 6A is a schematic plan view of a solid in which a thermoplastic resin powder is placed on a fixing portion and a portion including the vicinity thereof, and FIG. 6B is a cross-sectional view taken along line VIB-VIB in FIG. 6A. It is a schematic plan view of the composite_body | complex which concerns on a modification.

  Hereinafter, preferred embodiments of the composite and the method for producing the same according to the present invention will be described in detail with reference to the accompanying drawings.

  The composite according to the present invention has a configuration in which a thermoplastic resin is fixed to a solid excluding an inert metal, and examples of its use include waterproof sealing and gaskets for electronic component casings, fuel cell separators, and the like. A configuration in which the thermoplastic resin functions as a sealing member can be mentioned. However, the present invention is not particularly limited to this, and can be suitably applied to various devices and products, and parts thereof.

  A specific configuration of the composite 10 according to the present embodiment will be described with reference to FIGS. 1A and 1B. 1A is a schematic plan view of the composite 10, and FIG. 1B is a cross-sectional view taken along line IB-IB in FIG. 1A. The composite 10 is configured by fixing a thermoplastic resin 16 to a fixing portion 14 of a solid 12 (member).

  The solid 12 can be suitably formed from, for example, metals such as iron, aluminum, magnesium, copper, nickel, and alloys thereof, inorganic materials (ceramics) made of carbon, silicon, and the like. However, the solid 12 is not particularly limited as long as it is a solid made of a material excluding an inert metal (gold, platinum, etc.).

  A SiOx glass film 18 is formed on the surface of the solid 12. The glass film 18 has a water repellent portion 20 having a contact angle of 130 ° or more when evaluated with water, and a hydrophilic portion 22 having a hydroxyl group density larger than that of the water repellent portion 20 and the contact angle of 20 ° or less. And have. Specifically, in the glass film 18, a hydrophilic portion 22 is provided at the fixing portion 14, and the thermoplastic resin 16 is fixed to the hydrophilic portion 22. Examples of the thermoplastic resin 16 include polyamide-based resins and polyolefin-based resins. However, the thermoplastic resin 16 is not particularly limited as long as it exhibits thermoplasticity, and may be appropriately selected depending on the application.

  Such a composite 10 is thermoplastic after the first surface treatment for forming the glass film 18 and the second surface treatment for forming the hydrophilic portion 22 on the glass film 18 on the surface of the solid 12. It can be manufactured by fixing the resin. First, an example in which the first surface treatment and the second surface treatment are performed on the surface of the solid 12 by a chemical vapor deposition (plasma CVD) method using a plasma apparatus will be described below.

  First, prior to performing the precursor film forming step, the surface of the solid 12 is subjected to a cleaning process. The cleaning process is not an essential configuration in the method for manufacturing the composite 10 according to this embodiment, and may be performed as necessary. This cleaning process may be performed using water or various organic solvents such as acetone, or may be performed by plasma processing.

  As the cleaning process, various methods such as a cleaning process using an organic solvent or water, an excimer light process, a corona discharge process, and a flame process can be used, but it is preferable to employ a plasma process. In this case, since the cleaning treatment can be performed using the same plasma generator as that used for the first surface treatment and the second surface treatment described later, the cleaning treatment can be performed at low cost with simple equipment. It becomes possible.

  As such a plasma generator, for example, an open air (registered trademark) plasma system manufactured by Plasmatreat can be used. Here, a schematic configuration of the plasma generator 30 will be described with reference to FIG. FIG. 2 is a schematic vertical cross-sectional view of a main part of the plasma generator 30.

  The plasma generator 30 includes a hollow casing 32 and an electrode 34 accommodated in the casing 32. A power source 36 for energizing is electrically connected to the electrode 34. An annular insulator 38 is provided on the inner wall of the casing 32 so as to surround the electrode 34.

  In the casing 32, a nozzle member 40 is connected to a lower end portion in FIG. The nozzle member 40 has a discharge hole 42 for discharging plasma gas to the surface of the solid 12.

  That is, a gas supply pipe 44 is connected to the upper end portion of the casing 32, and an ignition gas is led out from the gas supply pipe 44 toward the inside of the casing 32. Part of the ignition gas is converted into plasma under the action of the electrode 34 and is discharged from the discharge hole 42 as plasma gas. The plasma gas flows toward the solid 12 positioned and fixed so as to face the discharge holes 42.

  A starting material supply pipe 46 connected to a starting material supply source (not shown) is disposed in the vicinity of the discharge hole 42. The starting material supply pipe 46 is positioned so as to be separated from or approach the electrode 34 by interposing a spacer (not shown) between the casing 32 and the nozzle member 40 or by removing the spacer. It is variable. That is, by appropriately changing the distance between the electrode 34 and the starting material supply pipe 46, it is possible to adjust the temperature of the plasma and the strength of the oxidizing power when the starting material comes into contact with the plasma gas.

  Further, the starting material for forming the glass film 18 is led out from the starting material supply pipe 46 into the nozzle member 40 so as to flow in a direction orthogonal to the flowing direction of the plasma gas. However, the starting material is supplied only when the first surface treatment is performed, and is not supplied during the cleaning treatment and the second surface treatment.

  In order to carry out the cleaning process with such a plasma generator 30, the electrode 34 is energized from the power source 36, and an ignition gas (for example, dry air or dry nitrogen) is introduced into the casing 32 through the gas supply pipe 44. ). By energization, glow discharge occurs between the electrode 34 and the nozzle member 40. By this glow discharge, a part of the ignition gas is excited and becomes plasma gas.

  The plasma gas thus obtained is discharged toward the solid 12 from the discharge hole 42. Therefore, by scanning the plasma generator 30 along the solid 12, the surface is cleaned.

  Next, as shown in FIGS. 3A and 3B, a first surface treatment is performed on the surface of the cleaned solid 12 to form a glass film 18. For this purpose, the starting material is supplied into the nozzle member 40 from the starting material supply pipe 46 at the same time as the plasma gas is discharged from the discharge hole 42.

  As the starting material, for example, compounds of siloxanes and silicon alkoxides can be used. Specifically, hexamethyldisiloxane, tetraethoxysilane, tetramethoxysilane, or the like can be used. Those having a part of the organic group substituted with hydrogen, such as pentamethyldisiloxane and tetramethyldisiloxane, and those having a repeating structure of siloxane such as octamethyltrisiloxane may be used.

This starting material is partially decomposed in the nozzle member 40 by the high energy of the plasma gas. That is, a decomposition product is obtained. This decomposition product is sprayed onto the surface of the solid 12 together with the plasma gas and adheres to the surface, and then polymerizes to polymerize. As a result, a glass film 18 made of SiOx glass is formed on the surface of the solid 12. At this point, Si is bonded to each other through O on the entire surface of the glass film 18 and a methyl (—CH ₃ ) group is bonded to Si, so that the entire surface of the glass film 18 has a water repellent portion. It is 20.

  Moreover, since the glass film 18 formed in this way can be obtained as a deposition layer of glass fine particles, the surface has fine unevenness of several tens of nm. Thereby, in the water-repellent part 20 provided in the glass film 18, said contact angle can be enlarged effectively. Therefore, as will be described later, the molten thermoplastic resin can be repelled better.

  Next, as shown in FIGS. 4A and 4B, a template 50 is placed on the glass film 18. The template 50 has a through-hole 52 that exposes the glass film 18 only in a portion corresponding to the fixing portion 14 of the solid 12. That is, by placing the template 50 on the glass film 18, it is possible to mask a portion of the glass film 18 excluding the fixing portion 14.

  Note that the fixing portion 14 of the composite 10 according to the present embodiment is provided in a frame shape along the outer peripheral edge of the solid 12. For this reason, the through hole 52 that exposes the fixing portion 14 is also provided in a frame shape along the outer peripheral edge of the template 50. Therefore. In the template 50, a portion inside the through hole 52 is integrated with a portion outside the through hole 52 through the support portion 54.

  The exposed portion 14 of the glass film 18 exposed in this manner is subjected to an oxidation treatment for substituting a methyl group with a hydroxyl group as a second surface treatment to form the hydrophilic portion 22. For this purpose, plasma gas is obtained by supplying, for example, dry air or dry nitrogen as the ignition gas. This plasma gas is discharged onto the precursor film through the discharge hole 42. As a result, the methyl group is substituted with a hydroxyl group, and the hydrophilic portion 22 modified with the hydroxyl group is formed. That is, in the glass film 18 formed by the first surface treatment, only the fixing portion 14 that has been subjected to the second surface treatment can be changed from the water repellent portion 20 to the hydrophilic portion 22. As a result, as shown in FIGS. 5A and 5B, a glass film 18 in which the water-repellent portion 20 is provided in a portion excluding the fixing portion 14 and the hydrophilic portion 22 is provided in the fixing portion 14 is obtained.

  At this time, as described above, since the glass film 18 is obtained as a deposited layer, the contact angle can be effectively reduced in the hydrophilic portion 22. In such a hydrophilic part 22, as described later, it becomes possible to better adapt a molten thermoplastic resin.

  In the present embodiment, as described above, the template 50 is used to expose only the fixing portion 14 of the glass film 18 and mask the remaining portion, so that the water repellent portion 20 and the hydrophilic portion can be easily formed with a simple configuration. It becomes possible to form the sexing part 22. However, the method is not limited to using the template 50 as long as the second surface treatment can be performed only on the fixing portion 14 of the glass film 18. For example, a mask may be formed.

  Next, the thermoplastic resin 16 is fixed to the fixing portion 14 of the solid 12 subjected to the first surface treatment and the second surface treatment as described above. For this purpose, first, as shown in FIGS. 6A and 6B, the powder of the thermoplastic resin 16 is disposed on the fixing portion 14 of the glass film 18 and the portion including the vicinity thereof. The powder is heated and melted. As described above, in the glass film 18, the hydrophilic portion 22 in which the molten thermoplastic resin 16 is easy to conform is formed only in the fixing portion 14, and the water repellent portion 20 in which the thermoplastic resin 16 is easily repelled is formed in the remaining portion. Is formed.

  Accordingly, by leaving the thermoplastic resin 16 heated and melted as described above, the thermoplastic resin 16 that contacts the hydrophilic portion 22 becomes familiar with the hydrophilic portion 22 and contacts the water repellent portion 20. The thermoplastic resin 16 is guided to the hydrophilic portion 22. The composite 10 in which the thermoplastic resin 16 is fixed to the fixing portion 14 as shown in FIGS. 1A and 1B by cooling and solidifying the thermoplastic resin 16 preferentially guided to the fixing portion 14 in this manner. Can be obtained.

  From the above, the composite 10 according to the present embodiment can be manufactured easily and at a low cost by a simple process without using an injection mold, and thereby various types are manufactured in small amounts. Even in the case, it can be suitably applied.

  In the present embodiment, as described above, the cleaning treatment, the first surface treatment, and the second surface treatment can be performed using one plasma generator 30. In addition, since the plasma CVD method using the plasma generator 30 can be performed under atmospheric pressure, vacuum equipment such as a chamber and an exhaust pump is not required, and can be easily incorporated into a production line. This also makes it possible to simplify the equipment for manufacturing the composite 10 and reduce the capital investment. Moreover, since the composite 10 can be obtained without using batch processing, it is preferable from the viewpoint of mass production as well as small production.

  The present invention is not particularly limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.

  For example, instead of using one plasma generator 30, a plurality of plasma generators having nozzles optimized in each of the cleaning process, the first surface process, and the second surface process are used in combination. Also good. In this case, since the respective processes can be performed in a flow manner, the composite 10 can be efficiently manufactured.

  Further, the method for manufacturing the composite 10 is not limited to the plasma CVD method using the plasma generator 30. For example, in the plasma generator 30, a part of the ignition gas is converted into plasma by glow discharge. However, plasma generation may be performed using electric discharge or flame other than glow discharge. Further, the environment for performing the plasma CVD method is not limited to atmospheric pressure, and may be low pressure, vacuum, or inert atmosphere.

  Furthermore, in the first surface treatment, it is sufficient that the glass film 18 can be formed on the surface of the solid 12, and the starting material may be decomposed using heat, light, or the like as an energy source for film formation instead of plasma. Further, the glass film 18 may be formed by a physical vapor deposition (PVD) method. In the second surface treatment, it is sufficient that the hydrophilic portion 22 can be formed, and the glass film 18 is formed by a chemical process using an oxidizing agent, heating in an oxidizing atmosphere, irradiation with light such as ultraviolet light, ozone treatment, corona discharge, or the like. An oxidation treatment may be performed.

  Furthermore, in the above embodiment, the fixing portion 14 of the composite 10 is provided in a frame shape along the outer peripheral edge of the solid 12, and the frame-shaped thermoplastic resin 16 is fixed. However, the fixing part 14 and the thermoplastic resin 16 are not limited to the above-described shapes, and can be appropriately changed according to the use of the composite 10 and the like. What is shown. FIG. 7 is a schematic plan view of a composite body 60 according to a modification. In addition, among the components shown in FIG. 7, those having the same or similar functions and effects as those shown in FIGS. 1A and 1B are denoted by the same reference numerals, and detailed description thereof is omitted.

  The composite body 60 is formed in the same manner as the composite body 10 except that a thermoplastic resin 62 is formed on the surface of the solid 12 instead of the thermoplastic resin 16. As shown in FIG. 7, the thermoplastic resin 62 has an alphabet “ABC” shape. That is, in the glass film 18, the hydrophilic portion 22 is formed in the fixing portion 64 provided in the above-described shape, and the remaining portion is the water repellent portion 20. Even in the case of the thermoplastic resin 62 having such a shape, for example, by using a template (not shown) in which a through hole having the above shape is formed, the solid resin 12 can be formed similarly to the thermoplastic resin 16 described above. It can be fixed.

  Thus, even if it is the thermoplastic resin 16 and 62 of various shapes, it can be easily produced only by preparing the template etc. according to this shape.

  A 5052 (JIS) plate made of Al and having dimensions of 50 x 30 x 1.5 mm is selected as the solid, and nylon-6 (Amilan CM1007: manufactured by Toray Industries, Inc.) is selected as the thermoplastic resin. A composite according to an example was produced.

  That is, first, the cleaning process was performed on the solid surface using the plasma generator 30 shown in FIG. Specifically, plasma discharge was performed with a generator setting in which an ignition gas was supplied as dry air at 3000 liters / hour, a plasma voltage was 300 V, and a plasma current was 20 A. At this time, the surface was scanned with the distance (irradiation distance L shown in FIG. 2) between the ejection hole 42 and the processing target surface being 4 mm and the processing speed being 5 m / min.

  Next, in order to form a glass film on the surface of the cleaned solid, an ignition gas was supplied as dry nitrogen at 1740 liters / hour, plasma discharge was performed with a generator setting with a plasma voltage of 283 V and a plasma current of 13 A. . Also, starting nitrogen supply pipe of hexamethyldisiloxane (HMDSO: manufactured by Kanto Chemical Co., Ltd.) is supplied at a rate of 40 g / hour through an evaporator kept at 85 ° C. using dry nitrogen supplied at 120 liters / hour as a carrier gas. 46. Thereby, hexamethyldisiloxane was polymerized on the surface of the reinforcing fiber to form a precursor film made of a SiOx glass film. At this time, the irradiation distance L was 4 mm, and the processing speed was 20 m / min. The starting material supply pipe 46 was set at a position 3 mm below the original position (position at the time of marketing), that is, at a position further away from the electrode 34.

  The contact angle of water on the surface of the glass film obtained as described above with respect to water was 163.5 °, and the contact angle with respect to the molten thermoplastic resin was 146.7 °. That is, it was confirmed that a water-repellent portion showing so-called super-water repellency was formed on the surface of the glass film.

  Next, the above-described template 50 was placed on the obtained glass film, and the fixing portion was subjected to oxidation treatment with plasma gas through the through hole 52 to form a hydrophilic portion. Specifically, dry air was supplied as an ignition gas at 3000 liters / hour, plasma discharge was performed with a generator setting with a plasma voltage of 300 V and a plasma current of 20 A. At this time, the irradiation distance L was 7 mm, and the processing speed was 20 m / min.

  Thereby, the hydrophilic part was formed by chemically modifying the hydroxyl group at the fixing site of the glass film. The contact angle of this hydrophilic portion with respect to water was 2.5 °, and the contact angle with respect to the molten thermoplastic resin was 9.0 °. That is, it was confirmed that a hydrophilic portion showing so-called super-hydrophilicity was formed at the fixing portion of the glass film.

  The powder of the thermoplastic resin formed by cutting the above amylan CM1007 was placed on the solid surface subjected to the first surface treatment and the second surface treatment in this way. In this state, the solid was placed in an annular furnace maintained at 250 ° C. in a dry nitrogen atmosphere and allowed to stand for 10 minutes. The thermoplastic resin thus melted was repelled by the water repellent part and guided to the hydrophilic part. Thereafter, the solid was taken out from the annular furnace and allowed to cool to room temperature, whereby a composite in which the thermoplastic resin was solidified on the hydrophilic portion was obtained.

  From the above, it was confirmed that the composite according to the example can be produced by fixing a thermoplastic resin to a solid fixing site without using an injection mold. Similarly, when the shape of the template is changed, it is possible to obtain a composite in which the thermoplastic resin is fixed to the fixing portion corresponding to the shape of the through hole of the template. That is, according to the present embodiment, it is possible to easily and inexpensively produce a simple process without using an injection mold, and it is also suitable for producing many kinds in small quantities. Can be obtained.

DESCRIPTION OF SYMBOLS 10, 60 ... Composite 12 ... Solid 14, 64 ... Fixed part 16, 62 ... Thermoplastic resin 18 ... Glass film 20 ... Water-repellent part 22 ... Hydrophilic part 30 ... Plasma generator 32 ... Casing 34 ... Electrode 36 ... Power supply DESCRIPTION OF SYMBOLS 38 ... Insulator 40 ... Nozzle member 42 ... Discharge hole 44 ... Gas supply pipe 46 ... Starting material supply pipe 50 ... Template 52 ... Through-hole 54 ... Support part

Claims (5)

A composite in which a thermoplastic resin is fixed to a solid fixing site excluding an inert metal,
A SiOx glass film is formed on the solid surface,
The glass film has a water repellent portion having a contact angle of 130 ° or more when evaluated with water, and a hydrophilic portion having a hydroxyl group density larger than the water repellent portion and the contact angle of 20 ° or less. And
The hydrophilic part is formed in the fixing part of the glass film, and the water-repellent part is formed in the remaining part of the glass film ;
The thermoplastic resin is configured to selectively protrude from the anchor site on the glass film, composite, characterized in Rukoto to have a curved edge. The composite of claim 1, wherein
The composite comprising the glass film being a deposited layer of glass fine particles. A method for producing a composite by obtaining a composite by fixing a thermoplastic resin to a solid fixing site excluding an inert metal,
Applying a first surface treatment to the surface of the solid to form a SiOx glass film composed of a water repellent portion having a contact angle of 130 ° or more when evaluated with water;
Of the glass film, by applying a second surface treatment that chemically modifies the hydroxyl group only to the fixing site, the fixing site is changed to a hydrophilic portion having a contact angle of 20 ° or less;
The powdery thermoplastic resin disposed on the glass film including at least the fixing part is melted to obtain a melt, and the melt is made hydrophilic by the difference in the contact angle between the water repellent part and the hydrophilic part. A step of fixing the thermoplastic resin to the fixing part by solidifying after guiding to the sex part ;
The manufacturing method of the composite_body | complex characterized by having. In the manufacturing method of Claim 3,
Production of a composite comprising the water-repellent part and the hydrophilic part by performing the second surface treatment in a state where a template that exposes only the fixing part is disposed on the glass film. Method. In the manufacturing method of Claim 3 or 4,
In the first surface treatment, the glass film is formed by depositing glass particles on the solid surface.

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