JP6319000B2 - Method and apparatus for surface modification of reinforced substrate - Google Patents

Description

  The present invention relates to a surface modification method and a surface modification apparatus for a reinforced substrate.

  In recent years, a composite material in which a reinforced base material is impregnated with a resin has been used as an automobile part in order to reduce the weight of an automobile body. Examples of such a reinforcing substrate include carbon fiber, glass fiber, polyamide fiber, and the like. In general, since the reinforced substrate has low adhesion to the resin, it is necessary to improve the adhesion of the reinforced substrate to the resin.

  In this connection, for example, in Patent Document 1 below, the surface of the aromatic polyamide fiber is modified and bonded by irradiating the aromatic polyamide fiber with plasma from a direction perpendicular to the fiber arrangement surface. A method for improving adhesion has been disclosed to improve the properties.

Japanese Patent Application Laid-Open No. 61-258065

  In the adhesion improving method described in Patent Document 1, plasma is irradiated from the direction orthogonal to the arrangement surface to the aromatic polyamide fiber. In this way, when the plasma is irradiated from the orthogonal direction, the plasma gas is compressed and heated to a high temperature because there is no escape place at the irradiated portion, and is exposed to the high temperature portion at the center, so that the reinforced substrate that is the object to be irradiated may be damaged. There is. Therefore, in the adhesion improving method described in Patent Document 1, in order to reduce damage to the reinforced base material caused by plasma irradiation, a sufficient irradiation distance is provided and surface modification is performed by irradiating plasma for a long time. Yes. That is, there is a possibility that the plasma cannot be efficiently irradiated in order to obtain the surface modification effect.

  The present invention has been made in order to solve the above-described problems, and is a reinforcing group that efficiently irradiates the reinforcing substrate with plasma and reduces the surface of the reinforcing substrate while reducing damage to the reinforcing substrate. An object of the present invention is to provide a material surface modification method and a surface modification apparatus.

The surface modification method for a reinforced substrate according to the present invention that achieves the above object is a method in which a surface of a reinforced substrate constituting a composite material is impregnated with a resin and inclined with respect to an orthogonal direction perpendicular to the surface. In this method, the surface of the reinforced substrate is modified by irradiating with plasma. Further, the reinforcing substrates are arranged so as to oppose each other, and by irradiating the plasma between the reinforcing substrates arranged so as to oppose each other, both surfaces of the opposing reinforcing substrates are arranged. Irradiate the plasma.

Moreover, the surface modification apparatus for a reinforced base material according to the present invention that achieves the above object is inclined with respect to the orthogonal direction perpendicular to the surface of the reinforced base material constituting the composite material by impregnating the resin. It has an irradiation part which irradiates plasma from the direction and modifies the surface of the reinforced substrate. Moreover, the said reinforcement | strengthening base material is arrange | positioned so that it may mutually oppose, The said reinforcement | strengthening base material which the said irradiation part opposes by irradiating the said plasma toward the said reinforcement | strengthening base material arrange | positioned facing each other The plasma is irradiated on both of the surfaces.

  According to the surface modification method and the surface modification apparatus for a reinforced base material configured as described above, the surface of the reinforced base material is irradiated by irradiating the surface of the reinforced base material from a direction inclined with respect to the orthogonal direction. To reform. Therefore, since the plasma gas is irradiated to the surface of the reinforced substrate in an inclined manner, the compression of the plasma gas is suppressed, and the high temperature portion at the center can be released and irradiated. Therefore, the surface of the reinforced substrate can be modified by efficiently irradiating the reinforced substrate with plasma while reducing damage to the reinforced substrate.

It is the schematic which shows the surface modification apparatus of the reinforced base material which concerns on 1st Embodiment. It is the schematic for demonstrating the surface modification method which concerns on 1st Embodiment. It is a graph for demonstrating an example of the effect of the surface modification method which concerns on 1st Embodiment. It is the schematic for demonstrating the surface modification method which concerns on contrast. FIG. 5 (A) is a photomicrograph showing the reinforced substrate before plasma irradiation, and FIG. 5 (B) is a microscope showing the reinforced substrate after being irradiated with plasma by the surface modification method according to the comparative example. It is a photograph. It is the schematic for demonstrating the surface modification method which concerns on 2nd Embodiment. It is the schematic for demonstrating the surface modification method which concerns on the modification 1. It is the schematic for demonstrating the surface modification method which concerns on the modification 2. It is the schematic for demonstrating the surface modification method which concerns on the modification 3. It is the schematic for demonstrating the surface modification method which concerns on the modification 4.

<First Embodiment>
Hereinafter, a first embodiment of the present invention will be described with reference to the accompanying drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted. The dimensional ratios in the drawings are exaggerated for convenience of explanation, and may differ from actual ratios.

  FIG. 1 is a schematic view showing a surface modification device 1 for a reinforced substrate 210 according to a first embodiment of the present invention. FIG. 2 is a schematic view for explaining the surface modification method according to the first embodiment. FIG. 3 is a graph for explaining an example of the effect of the surface modification method according to the first embodiment. FIG. 4 is a schematic view for explaining the surface modification method according to the comparative example. FIG. 5A is a photomicrograph showing the reinforced substrate 210 before plasma irradiation, and FIG. 5B is a reinforced substrate 210 after being irradiated with plasma P by the surface modification method according to the comparative example. FIG.

  First, the reinforced substrate 210 whose surface is modified by the surface modification apparatus 1 will be described. The reinforced substrate 210 constitutes a composite material by impregnating the resin. The composite material has higher strength and rigidity than the resin alone when combined with the reinforced substrate 210.

  The reinforcing substrate 210 is formed of a woven fabric sheet such as carbon fiber, glass fiber, or organic fiber. In the present embodiment, as an example, a carbon fiber having a small coefficient of thermal expansion and excellent dimensional stability and less deterioration in mechanical properties even at high temperatures will be described. The reinforcing substrate 210 is configured in a so-called bobbin shape in a bundle of about 1,000 to 50,000 carbon fibers.

  As shown in FIG. 1, the surface modification device 1 for a reinforced base material 210 according to the first embodiment includes a tension control unit 10, an irradiation unit 20, and a conveyance unit 30.

  The tension control unit 10 controls the tension of the reinforced substrate 210 conveyed by the conveyance unit 30 to prevent distortion of the reinforced substrate 210. The tension control unit 10 includes an arrangement unit 11 on which a bobbin-shaped reinforcing base 210 is set, and four rollers 12 to 15 that prevent distortion of the reinforcing base 210.

  The irradiation unit 20 irradiates the reinforcing substrate 210 with the plasma P. The irradiation unit 20 irradiates the surface 211 of the reinforced substrate 210 with the plasma P from a direction inclined with respect to the Y direction (orthogonal direction orthogonal to the surface 211), thereby modifying the surface 211 of the reinforced substrate 210. Moreover, it is preferable that the irradiation part 20 irradiates the surface 211 of the reinforcement | strengthening base material 210 with the plasma P from the direction which inclined 30 degrees or more with respect to the Y direction.

  As a power source for the irradiation unit 20, an AC power source 21 is preferably used. The AC power supply 21 is grounded (grounded).

  By irradiating the reinforced substrate 210 with plasma P, an acidic functional group is introduced to the carbon surface constituting the carbon fiber, so that the surface 211 of the reinforced substrate 210 is modified and the adhesion to the resin is improved. .

  The transport unit 30 winds the reinforced base material 210 whose surface 211 has been modified into a bobbin shape again while transporting the reinforced base material 210 in the direction of the arrow in FIG. The conveyance unit 30 includes a motor 31 and a winding unit 32 that winds the reinforced substrate 210 by being rotated by the motor 31.

  Next, with reference to FIG. 2, FIG. 4, and FIG. 5, the surface modification method according to the proportionality and the surface modification method according to the present embodiment will be described.

  First, the surface modification method according to the comparative example will be described with reference to FIG. In the comparative surface modification method, the irradiation unit 920 irradiates the surface 211 of the reinforced substrate 210 with the plasma P from the Y direction.

  When the plasma P is irradiated from the Y direction in this way, the plasma gas is compressed on the surface 211 of the reinforced substrate 210 because there is no escape, and is compressed to a high temperature and exposed to the high temperature portion at the center, so that the reinforced substrate 210 is damaged. Let That is, as shown in FIGS. 5 (A) and 5 (B), the reinforcing base 210, which is a carbon fiber, is reduced in diameter and the strength is reduced.

  Next, the surface modification method according to the present embodiment will be described with reference to FIG.

  The surface modification method according to the present embodiment is a method for modifying the surface 211 of the reinforced substrate 210 by irradiating the surface 211 of the reinforced substrate 210 with the plasma P from a direction inclined with respect to the Y direction. . Furthermore, it is preferable to irradiate the surface 211 of the reinforced substrate 210 with the plasma P from a direction inclined by 30 ° or more from the Y direction.

  Hereinafter, an example of the irradiation conditions of the plasma P will be described.

  The plasma voltage is, for example, 200 to 400 V and preferably 260 to 280 V from the viewpoint of the ease of generating plasma P.

  The pulse discharge frequency is, for example, 10 to 30 kHz, and preferably 16 to 20 kHz, from the viewpoint of easy generation of plasma P.

  The plasma irradiation distance L is, for example, 2 to 30 mm, and preferably 10 to 15 mm. If the plasma irradiation distance L is short, the reinforced substrate 210 may be damaged, and if it is long, the surface modification effect becomes small.

  The plasma irradiation time is, for example, 0.1 to 5.0 seconds, and preferably 0.5 to 1.0 seconds. If the plasma irradiation time is short, the surface modification effect is small, and if the plasma irradiation time is long, the reinforced substrate 210 may be damaged.

  As the plasma gas, for example, a mixed gas containing 0.5% or more of oxygen, nitrogen, or helium can be used. Adhesion is improved when oxygen, nitrogen, or helium activated by the plasma P adheres to the surface of the reinforced substrate 210.

  By irradiating the plasma P from the direction inclined with respect to the Y direction as described above, it is possible to irradiate by escaping the central high temperature portion while suppressing the compression of the plasma gas. Therefore, it is possible to efficiently irradiate the reinforced substrate 210 with the plasma P while reducing damage to the reinforced substrate 210.

  The reinforced substrate 210 having the surface 211 thus modified can be applied to a composite material molding method such as an RTM (Resin Transfer Molding) molding method or a filament winding molding method.

  In FIG. 3, the horizontal axis indicates the inclination angle from the Y direction, and the vertical axis indicates the tensile strength of the reinforced substrate 210 and the amount of acidic functional groups introduced on the surface 211 of the reinforced substrate 210. Here, as shown by a dotted line in FIG. 3, a description will be given by taking as an example a reinforced substrate 210 having a tensile strength before irradiation with plasma P of 1420 MPa.

  As shown in FIG. 3, the tensile strength and the amount of acidic functional groups of the reinforced substrate 210 increase as the inclination angle from the Y direction increases. That is, by increasing the angle of inclination from the Y direction and irradiating, the adhesive strength to the resin can be improved while increasing the tensile strength of the reinforced substrate 210. Here, when the inclination angle exceeds 30 °, the tensile strength exceeds 1420 MPa, which is the tensile strength before irradiation, and therefore the inclination angle is preferably 30 ° or more.

  As described above, the surface modification method of the reinforced base material 210 according to the present embodiment is a direction inclined with respect to the Y direction on the surface 211 of the reinforced base material 210 constituting the composite material by impregnating the resin. Then, the surface 211 of the reinforced substrate 210 is modified by irradiating with plasma P. For this reason, compression of plasma gas is suppressed and it can irradiate by escaping the high temperature part of the center. Therefore, the surface 211 of the reinforced substrate 210 can be modified by efficiently irradiating the reinforced substrate 210 with the plasma P while reducing damage to the reinforced substrate 210.

  In addition, the surface 211 of the reinforced substrate 210 is irradiated with plasma P from a direction inclined by 30 ° or more with respect to the Y direction. For this reason, as shown in FIG. 3, compared with the case where the plasma P is not irradiated, the tensile strength of the reinforcement base material 210 can be raised.

  In addition, as described above, the surface modification device 1 for the reinforced substrate 210 according to this embodiment irradiates the surface 211 of the reinforced substrate 210 with the plasma P from the direction inclined with respect to the Y direction, The irradiation unit 20 for modifying the surface 211 of the reinforced substrate 210 is included. For this reason, compression of plasma gas is suppressed and it can irradiate by escaping the high temperature part of the center. Therefore, the surface 211 of the reinforced substrate 210 can be modified by efficiently irradiating the reinforced substrate 210 with the plasma P while reducing damage to the reinforced substrate 210.

  Further, the irradiation unit 20 irradiates the surface 211 of the reinforced substrate 210 with the plasma P from a direction inclined by 30 ° or more with respect to the Y direction. For this reason, as shown in FIG. 3, compared with the case where the plasma P is not irradiated, the tensile strength of the reinforcement base material 210 can be raised.

Second Embodiment
Next, a second embodiment of the present invention will be described. Description of parts common to the first embodiment will be omitted, and only features unique to the second embodiment will be described.

  FIG. 6 is a schematic diagram for explaining the surface modification method according to the second embodiment, and corresponds to FIG. 2.

  As shown in FIG. 6, the surface modification device 2 for a reinforced base material 210 according to the second embodiment forms an irradiation part 120 and a recess 212 where the reinforced base material 210 faces a part of the reinforced base material 210. And a plurality of rollers 40. The configurations of the tension control unit 10 and the conveyance unit 30 are the same as those of the surface modification apparatus 1 according to the first embodiment, and thus description thereof is omitted.

  The irradiation unit 120 is arranged along the Y direction. The irradiation unit 120 irradiates the plasma P toward the space between the reinforcing bases 210 arranged opposite to each other in the recesses 212, so that both surfaces 212 </ b> A and 212 </ b> B of the surface 211 of the opposing reinforcing bases 210 are irradiated. Plasma P is irradiated. According to this structure, since the irradiation part 120 is arrange | positioned so that it may not incline with respect to a Y direction, the width | variety of the X direction of the irradiation part 120 can be suppressed. In addition, it is possible to prevent the interference with the reinforced substrate 210 that is generated by increasing the inclination angle of the irradiation unit 20 in the first embodiment.

  The irradiation unit 120 irradiates the plasma P from the Y direction to the portion where the recess 212 is formed as described above. Further, the reinforcing base 210 is formed along the Y direction so as to face each other in the recess 212. Therefore, the surface P of the reinforced substrate 210 is irradiated with the plasma P from a direction inclined with respect to the substantially X direction orthogonal to the surface 211 of the reinforced substrate 210.

  The plurality of rollers 40 includes a first roller 41, a second roller 42, a third roller 43, a fourth roller 44, and a fifth roller 45.

  The first roller 41 bends a part of the reinforcing base 210 downward in the Y direction.

  The second roller 42 and the first roller 41 are arranged so that a part of the reinforced substrate 210 follows the irradiation shape of the plasma P.

  The third roller 43 bends the reinforced base material 210 bent downward in the Y direction by the first roller 41 upward in the Y direction.

  The fourth roller 44 and the fifth roller 45 are arranged so that a part of the reinforced substrate 210 follows the irradiation shape of the plasma P.

  The fifth roller 45 bends the reinforced substrate 210 bent upward in the Y direction by the third roller 43 to the left in the X direction.

  The diameter of the third roller 43 is formed larger than the distance between the first roller 41 and the fifth roller 45. For this reason, in the concave portion 212, the width on the lower side in the Y direction (distal side with respect to the reinforced base material 210 where the concave portion 212 is not formed) is set to the width on the upper side in the Y direction (proximal side with respect to the reinforced base material 210 where the concave portion 212 is not formed). Larger than that. According to this configuration, the tension T in the direction of the arrow in the first roller 41 and the fifth roller 45 with respect to the reinforcing base 210 in a state where the reinforcing base 210 is stretched by the tension control unit 10 and the transport unit 30. Can be generated. Therefore, when the plasma P is irradiated, the reinforcing substrate 210 can be prevented from fluttering, and the irradiation distance can be made uniform. Therefore, it is possible to obtain a reinforced substrate 210 having a uniform surface modification effect.

  Next, the irradiation method according to the present embodiment will be described.

  In the irradiation method according to the present embodiment, the transport unit 30 transports the reinforced base material 210 so that the reinforced base material 210 forms a concave portion 212 facing each other in a part of the reinforced base material 210.

  The irradiation unit 120 irradiates the opposing surfaces 212A and 212B with the plasma P by irradiating the plasma P between the opposing surfaces 212A and 212B of the recess 212.

  As described above, in the method for modifying the surface of the reinforced substrate 210 according to this embodiment, the reinforced substrates 210 are disposed so as to face each other. In the method of modifying the surface of the reinforced substrate 210, the plasma P is applied to both the surfaces 211 of the reinforced substrate 210 facing each other by irradiating the plasma P between the reinforced substrates 210 arranged to face each other. Irradiate. According to this method, the opposing surfaces 212A and 212B can be irradiated with the plasma P at the same time, and the reinforced substrate 210 can be irradiated with the plasma P more efficiently.

  Further, the reinforced substrate 210 is transported so that the reinforced substrate 210 forms a recess 212 facing each other in a part of the reinforced substrate 210, and the surfaces 212A and 212B of the recess 212 facing each other are irradiated with the plasma P. . For this reason, the surface 211 of the reinforced substrate 210 can be continuously modified, and the productivity is improved. Further, since the irradiation unit 120 is not inclined with respect to the Y direction, the width of the irradiation unit 120 in the X direction can be suppressed. In addition, it is possible to prevent the interference with the reinforced substrate 210 that is generated by increasing the inclination angle of the irradiation unit 20 in the first embodiment.

  Further, in the concave portion 212, the width on the lower side in the Y direction is formed larger than the width on the upper side in the Y direction. For this reason, when the plasma P is irradiated, the reinforcing substrate 210 can be prevented from fluttering, and by making the irradiation distance uniform, the reinforcing substrate 210 having a uniform surface modification effect can be obtained.

  Further, the shape of the recess 212 is formed so as to have a shape along the irradiation shape of the plasma P. For this reason, the plasma P can be irradiated to the surface 211 of the reinforced substrate 210 along the irradiation shape of the plasma P, and a larger area can be irradiated with the plasma P. Therefore, the reinforced substrate 210 can be irradiated with the plasma P more efficiently.

  Further, as described above, in the surface reforming apparatus 2 for the reinforced base material 210 according to the present embodiment, the reinforced base materials 210 are disposed so as to face each other. Moreover, the irradiation part 120 irradiates both the surface 211 of the opposing reinforcement | strengthening base material 210 with plasma P by irradiating the plasma P toward between the reinforcement | strengthening base materials 210 arrange | positioned facing each other. For this reason, it is possible to simultaneously irradiate the opposing surfaces 212A and 212B with the plasma P, and to irradiate the reinforced substrate 210 with the plasma P more efficiently.

  Moreover, it has the conveyance part 30 which conveys the reinforcement base material 210, and the some roller 40 which forms the recessed part 212 which the reinforcement base material 210 mutually opposes in a part of the reinforcement base material 210. FIG. For this reason, the surface 211 of the reinforced substrate 210 can be continuously modified, and the productivity is improved. Further, since the irradiation unit 120 is not inclined with respect to the Y direction, the width of the irradiation unit 120 in the X direction can be suppressed. In addition, it is possible to prevent the interference with the reinforced substrate 210 that is generated by increasing the inclination angle of the irradiation unit 20 in the first embodiment.

  In addition, the plurality of rollers 40 are formed so that the lower width in the Y direction is larger than the upper width in the Y direction in the recess 212. For this reason, when the plasma P is irradiated, the reinforcing substrate 210 can be prevented from fluttering, and by making the irradiation distance uniform, the reinforcing substrate 210 having a uniform surface modification effect can be obtained.

  In addition, the plurality of rollers 40 forms the shape of the recess 212 so as to have a shape along the irradiation shape of the plasma P. For this reason, the plasma P can be irradiated to the surface 211 of the reinforced substrate 210 along the irradiation shape of the plasma P, and a larger area can be irradiated with the plasma P. Therefore, the reinforced substrate 210 can be irradiated with the plasma P more efficiently.

  Hereinafter, modifications of the above-described embodiment will be exemplified.

<Modification 1>
FIG. 7 is a schematic diagram for explaining a surface modification method according to Modification Example 1, and corresponds to FIG. In the second embodiment described above, the recess 212 is formed only in one place. However, two recesses 212 may be formed so as to be recessed in opposite directions as shown in FIG. According to this configuration, the plasma P is irradiated to the lower surface 211 a of the reinforced base material 210 in the right concave portion 212 and the upper surface 211 b of the reinforced base material 210 in the left concave portion 212. Therefore, since both surfaces 211a and 211b of the reinforced substrate 210 are irradiated with the plasma P, the surface 211 of the reinforced substrate 210 can be modified more uniformly. Further, three or more recesses 212 may be provided.

<Modification 2>
FIG. 8 is a schematic diagram for explaining a surface modification method according to Modification Example 2, and corresponds to FIG. In the first embodiment described above, the irradiation unit 20 is arranged to be inclined with respect to the Y direction, whereby the surface 211 of the reinforced substrate 210 is irradiated with the plasma P inclined. However, as shown in FIG. 8, the irradiation unit 120 is arranged along the Y direction, and the injection unit 300 injects the compressed air A with respect to the plasma P from the direction intersecting the Y direction. The surface 211 may be irradiated with the plasma P inclined. According to this configuration, since the irradiation unit 120 does not tilt with respect to the Y direction, the width of the irradiation unit 120 in the X direction can be suppressed. In addition, it is possible to prevent the interference with the reinforced substrate 210 that is generated by increasing the inclination angle of the irradiation unit 20 in the first embodiment.

<Modification 3>
FIG. 9 is a schematic diagram for explaining a surface modification method according to Modification Example 3, and corresponds to FIG. In the second embodiment described above, by using the second roller 42 and the fourth roller 44, the shape of the recess 212 is formed so that the reinforced substrate 210 has a shape that follows the irradiation shape of the plasma P. However, as shown in FIG. 9, by using the first roller 41, the fifth roller 45, and the sixth roller 46, the concave portion is formed so that the reinforcing substrate 210 has a shape that follows the irradiation shape of the plasma P. The shape 312 may be formed.

<Modification 4>
FIG. 10 is a schematic diagram for explaining a surface modification method according to Modification Example 4 and corresponds to FIG. In the second embodiment described above, the diameter of the third roller 43 is formed larger than the distance between the first roller 41 and the fifth roller 45, so that the width on the lower side in the Y direction is increased on the upper side in the Y direction. It was formed larger than the width of. However, as shown in FIG. 10, by arranging the seventh roller 47 and the eighth roller 48, the lower width in the Y direction may be formed larger than the upper width in the Y direction.

  The present invention is not limited to the above-described embodiments and modifications, and various modifications can be made within the scope of the claims.

  In the above-described embodiment, the reinforced substrate 210 is transported by the transport unit 30, but may be a form in which it is not transported.

1, 2 Surface reformer,
20,120 irradiation unit,
30 transport section,
40 multiple rollers,
41 first roller,
42 second roller,
43 Third roller,
44 Fourth roller,
45 fifth roller,
46 Sixth roller,
47 Seventh roller,
48 Eighth roller,
210 reinforced substrate,
211 the surface of the reinforced substrate,
212, 312 recess,
212A, 212B The opposing surface of the recess,
300 injection section,
P Plasma.

Claims (14)

A reinforcing group that modifies the surface of the reinforced substrate by irradiating the surface of the reinforced substrate constituting the composite material by impregnating the resin with plasma from a direction inclined with respect to the orthogonal direction orthogonal to the surface. A surface modification method for a material ,
Arranging the reinforcing substrates so as to face each other;
A method for modifying a surface of a reinforced substrate, wherein both the surfaces of the reinforced substrate facing each other are irradiated with the plasma by irradiating the plasma between the reinforced substrates disposed opposite to each other.   The surface modification method for a reinforced substrate according to claim 1, wherein the plasma is irradiated on the surface of the reinforced substrate from a direction inclined at least 30 ° with respect to the orthogonal direction. Conveying the reinforced substrate so that the reinforced substrate forms recesses facing each other in a part of the reinforced substrate;
The method of modifying a surface of a reinforced substrate according to claim 1 or 2 , wherein the plasma is irradiated onto surfaces of the recesses facing each other. The reinforced base material according to claim 3 , wherein in the concave portion, a width on a distal side with respect to another reinforced base material on which the concave portion is not formed is larger than a width on a proximal side with respect to the other reinforced base material. Surface modification method. The method for modifying a surface of a reinforced substrate according to claim 3 or 4 , wherein the shape of the recess is formed so as to have a shape along the shape of the plasma irradiation. Conveying the reinforced substrate so as to form at least two of the recesses recessed in opposite directions,
The method for modifying a surface of a reinforced substrate according to any one of claims 3 to 5 , wherein the plasma is irradiated to surfaces facing each other among the recesses. The surface modification of the reinforced substrate according to any one of claims 1 to 6 , wherein the irradiation direction of the plasma is changed by jetting compressed air to the plasma from a direction intersecting the irradiation direction of the plasma. Quality method. An irradiation unit for modifying the surface of the reinforced substrate by irradiating the surface of the reinforced substrate constituting the composite material by impregnating the resin with a plasma from a direction inclined with respect to the orthogonal direction orthogonal to the surface. a surface modification apparatus of the reinforcing base material having,
The reinforcing substrates are arranged to face each other;
The irradiation unit irradiates the plasma between both surfaces of the reinforced substrate facing each other by irradiating the plasma between the reinforced substrates disposed to face each other. Reformer . The surface modification device for a reinforced substrate according to claim 8 , wherein the irradiation unit irradiates the surface of the reinforced substrate with the plasma from a direction inclined by 30 ° or more with respect to the orthogonal direction. A transport unit for transporting the reinforced substrate;
The apparatus for modifying a surface of a reinforced base material according to claim 8 or 9 , further comprising a plurality of rollers in which a part of the reinforced base material forms a recess in which the reinforced base material faces each other. 2. The plurality of rollers are configured such that, in the concave portion, a width on a distal side with respect to the other reinforcing substrate on which the concave portion is not formed is larger than a width on a proximal side with respect to the other reinforcing substrate. The surface modification apparatus for a reinforced substrate according to 0 . Wherein the plurality of rollers, the surface modification apparatus of the reinforcing substrate according to claim 1 0 or 1 1 to form the shape of the recess so as to have a shape along the illumination profile of the plasma. The transport unit transports the reinforced base material so as to form at least two concave portions recessed in opposite directions.
The irradiation unit, on the surface facing to each other of each of said recesses, surface modifying apparatus of reinforced base material according to any one of claims 1 0 to 1 2 to irradiate the plasma. The direction intersecting the irradiation direction of the plasma, according to any one of claims 8-1 3, further comprising an ejection portion for changing an irradiating direction of the plasma by injecting compressed air to the plasma Surface modification equipment for reinforced substrates.