JP6587852B2 - Composite resin material and manufacturing method thereof - Google Patents

Description

  The present invention relates to a composite resin material and a method for producing the same.

  Conventional resin materials are often formed from a single material. In this case, the physical properties of the resin material must be unique to each material used. As a result, the conventional resin material group has a discrete distribution as a whole. For this reason, the use of such a single material resin material is limited, and when an industrial product having a desired specification is to be manufactured, the performance of the product is not limited by the characteristics of the resin material. I do not get.

  There has also been proposed a technique for obtaining a material having an arbitrary characteristic by selecting or offsetting the characteristic of the employed material by forming a copolymer of plural kinds of materials. However, such copolymers have not yet provided properties that are well suited to industrial needs, such as insufficient uniformity of properties and vulnerability to mechanical loads. . For example, regarding the linear expansion coefficient of the resin material, it is difficult to provide a resin material having a desired linear expansion coefficient, even with a copolymer resin material. For this reason, for example, in a semiconductor device, an interposer having an appropriate linear expansion coefficient between the linear expansion coefficient of silicon and the linear expansion coefficient of the printed circuit board is required in the interposer inserted between the silicon chip and the printed circuit board. However, it is difficult to provide an interposer having such a linear expansion coefficient by an interposer made of a single material or a copolymer interposer. The linear expansion coefficient is also called a linear expansion coefficient, a thermal expansion coefficient, or a thermal expansion coefficient, and its reciprocal temperature is a unit. Here, Kelvin (/ K) is used as a unit.

JP-A-8-198956

  The present invention relates to a production method capable of producing a resin material having a desired linear expansion coefficient and a resin material having such a desired linear expansion coefficient.

  The composite resin material according to the present invention is a composite resin material containing a plurality of types of resin materials. The composite resin material is formed by repeatedly arranging a first layer and a second layer in the stacking direction. In the first layer, the first resin material is arranged with the first direction as the longitudinal direction and arranged with a gap in the second direction intersecting the first direction, and the second layer other than the first resin material. These resin materials are arranged with the first direction as the longitudinal direction and arranged to fill the gap. On the other hand, in the second layer, the first resin material is arranged with the third direction intersecting with the first direction as a longitudinal direction and arranged with a gap in the fourth direction intersecting with the third direction. At the same time, the second resin material is arranged with the third direction as the longitudinal direction and arranged so as to fill the gap. As a result, the first resin material disposed in the first layer and the first resin material disposed in the second layer are joined in the vertical direction, and further the second resin disposed in the first layer. The resin material and the second resin material disposed in the second layer are joined in the vertical direction. The first resin material has a uniform molecular chain orientation in the longitudinal direction.

The method for producing a composite resin material according to the present invention can be formed by the following steps.
(1) A first resin material is formed with a first direction as a longitudinal direction and a gap in a second direction intersecting the first direction, and the first resin material is further formed on the first layer. It repeats forming with a gap in the fourth direction intersecting the third direction with the third direction intersecting the first direction as the longitudinal direction.
(2) A second resin material different from the first resin material is embedded in the gap.

It is a perspective view explaining the structure of the composite resin material S which concerns on 1st Embodiment. It is a perspective view explaining the structure of the composite resin material S which concerns on the modification of 1st Embodiment. It is process drawing explaining the manufacturing method of the composite resin material S which concerns on 1st Embodiment. It is process drawing explaining the manufacturing method of the composite resin material S which concerns on 1st Embodiment. It is process drawing explaining the manufacturing method of the composite resin material S which concerns on 1st Embodiment. It is process drawing explaining the manufacturing method of the composite resin material S which concerns on 1st Embodiment. It is process drawing explaining the manufacturing method of the composite resin material S which concerns on 1st Embodiment. It is process drawing explaining the manufacturing method of the composite resin material S which concerns on 1st Embodiment. It is process drawing explaining the manufacturing method of the composite resin material S which concerns on 1st Embodiment. It is process drawing explaining the manufacturing method of the composite resin material S which concerns on 1st Embodiment. It is explanatory drawing which shows the effect of the composite resin material S which concerns on 1st Embodiment. It is a top view explaining the structure of the composite resin material S which concerns on 2nd Embodiment.

  Next, the composite resin material S according to the embodiment of the present invention will be described in detail with reference to the drawings.

[First Embodiment]
FIG. 1A is a perspective view showing the structure of the composite resin material S of the first embodiment. As shown in FIG. 1A, the composite resin material S of the first embodiment is formed using, for example, two types of resin materials R1 and R2. In FIG. 1A, for simplification of illustration, only a part of the composite resin material S is illustrated in an enlarged manner. In actual materials, a larger number of resin materials R1 and R2 than illustrated are included. Is formed. In the following, for the sake of simplicity of explanation, a case where two types of resin materials are used will be mainly described. However, it goes without saying that three or more types of resin materials may be used.

  In the composite resin material S of the first embodiment, a plurality of types of resin materials R1 and R2 are formed in one layer with a predetermined blending ratio and one direction as a longitudinal direction. In the example of FIG. 1A, in the first layer (the lowermost layer of FIG. 1A), the blending ratio of the resin materials R1 and R2 is, for example, approximately 1: 1, and the longitudinal directions of the respective resin materials R1 and R2 are The resin materials R1 and R2 are alternately arranged along the Y-axis direction (second direction) that is the X-axis direction (first direction) and is orthogonal to the X-axis. In other words, the resin material R1 is alternately arranged with a predetermined gap in the Y-axis direction, and the resin material R2 is arranged so as to fill the gap. Although the arrangement method of the resin material R1 will be described later, as an example, it is performed by a resin melting method (FDM method). On the other hand, as will be described later, the resin material R2 is positioned and arranged so as to be able to embed the gap, or is formed (embedded) by impregnating the gap. In order for the resin material R2 to be substantially impregnated in the gap, it is preferable to reduce the viscosity of the resin material R2 by, for example, sufficiently increasing the temperature of the resin material R2. Here, the term “filling” does not mean that the gap is completely filled, and both the resin materials R1 and R2 have a desired coupling force and give a certain robustness as a material. It is used for the purpose of being sufficient if it is embedded to the extent. However, the resin material R2 does not need to be formed by impregnation, and the resin material R2 having a predetermined viscosity can be discharged by a resin melting method (FDM method), an ink jet method, or the like.

  On the other hand, in the second layer above the first layer, the compounding ratio of the resin materials R1 and R2 is, for example, approximately 1: 1 as in the first layer. The longitudinal direction is not the X-axis direction of the first layer but an axis (third direction) intersecting with this, for example, the Y-axis direction, and the resin materials R1 and R2 are in the X-axis direction (fourth direction). Arranged along. Also in the second layer, the resin material R1 is alternately formed with a predetermined gap in the X-axis direction, and the resin material R2 is formed so as to fill the gap between the resin material R1 in the gap.

Such a first layer and a second layer are alternately and repeatedly formed a plurality of times, thereby forming a composite resin material S composed of a plurality of types of resin materials.
The resin material R1 of the first layer and the resin material R1 of the second layer are joined in the vertical direction, and similarly, the resin material R2 of the first layer and the resin material R2 of the second layer Are joined in the vertical direction.

  In such a composite resin material S, the resin material R1 extends in the first direction in one layer, and extends in a second direction intersecting the first direction in a layer one layer higher than that. As a result, the composite resin material S has a structure (so-called girder structure) in which the resin materials R1 are joined together in the vertical direction at the intersecting position of the resin material R1 in the first layer and the second layer. Similarly, the resin material R2 has a similar cross beam structure at a position sandwiched between the resin materials R1 and is joined in the vertical direction. With such a structure, even if the bonding force between the different resin materials R1 and R2 (in the lateral direction) is weak, the bonding force between the same resin materials (in the stacking direction) in the above-mentioned cross-girder structure can be strengthened. In this case, the strength of the composite resin material S can be made sufficiently high. By adding a filler material or an adhesive in addition to the resin materials R1 and R2, it is possible to further strengthen the bonding force between the two resin materials.

  In addition, the compounding ratio of the resin materials R1 and R2 illustrated in FIG. 1A, the longitudinal direction, the crossing angle, and the like are merely examples, and can be variously changed depending on the required specifications of the modeled object. For example, as shown in FIG. 1B, the blending ratio of the resin materials R1 and R2 can be set to a different value among the plurality of layers. In FIG. 1B, the compounding ratio of the resin materials R1 and R2 is continuously varied so that the lowermost layer is only the resin material R1 and the uppermost layer is only the resin material R2. However, the present embodiment is limited to this. It is not a thing. For example, a plurality of layers having a predetermined blending ratio may be set as one set, and the predetermined blending ratio may be changed stepwise in units of the plurality of layers.

  As an example, the resin material R1 can be formed using at least a liquid crystal polymer as a main component. A liquid crystal polymer is a polymer resin having a property that molecules are aligned in a straight chain when a certain external force is applied in a molten state. Specifically, it is a thermoplastic liquid crystal polymer that gives a melting point higher than a predetermined melting point and melts by applying force, and has a property that molecular chains are regularly arranged when stress is applied in a molten state. Such a liquid crystal polymer is a polycondensate that has, for example, parahydroxybenzoic acid as a basic structure and can be synthesized by ester-bonding other components in a linear form with parahydroxybenzoic acid. As other components, various combinations other than the combination of phenol and phthalic acid are conceivable.

As will be described later, the liquid crystal polymer is a material having a property that when a shearing force is applied in a molten state, the molecular chains inside thereof are aligned along the direction in which the shearing force is applied. The resin material R1 of this embodiment is formed so that the molecular chain orientation is aligned along the longitudinal direction. In other words, the longitudinal direction coincides with the linear direction of the liquid crystal polymer. For this reason, the first resin material R1 has a linear expansion coefficient smaller than that of the resin material R2. As an example, the second resin material may be composed of an epoxy resin. In this case, the linear expansion coefficient of the resin material R1 is about 0.09 ppm / K, whereas the linear expansion coefficient of the resin material R2 is, for example, about 45 to 60 ppm / K, and the former is about two digits. Small value. However, it is needless to say that the difference in linear expansion coefficient between the two is not limited to this, and can be changed according to the gist of the invention.
In addition, the expansion coefficient in the radial direction of the resin material R1 is larger than the expansion coefficient in the longitudinal direction (about 0.09 ppm / K), for example, about 6 to 7 ppm / K.
The resin material R2 can be formed by forming the resin material R1 made of a liquid crystal polymer and then impregnating the gap.
The impregnation step may be performed from beginning to end in an atmospheric pressure atmosphere, but instead, the impregnation operation is performed in a vacuum atmosphere or a reduced pressure atmosphere, and then the interior is filled by returning to the atmospheric pressure atmosphere. It can also be done effectively.

  In the present embodiment, a thermoplastic liquid crystal polymer is used as the resin material R1. On the other hand, as the resin material R2, any of a thermosetting resin, a thermoplastic resin, and a photocurable resin can be used. .

  When a thermosetting resin such as an epoxy resin is used as the resin material R2, the material of the resin material R2 is preferably selected so that the curing temperature of the resin material R2 is lower than the melting temperature of the resin material R1.

In addition, a thermoplastic resin can also be employ | adopted as a material of resin material R2. As the resin material R2 of the thermoplastic resin, for example, polyethylene, polypropylene, polystyrene or the like can be used. In this case, the melting temperature of the resin material R2 is preferably lower than the melting temperature of the resin material R1. If the melting temperature of the resin material R2 is higher than the melting temperature of the resin material R1, the resin material R1 melts in the step of melting and impregnating the resin material R2, and it is difficult to maintain the cross structure of the resin material R1 as shown in FIG. In addition, the orientation direction of the molecular chain of the resin material is not constant.
Moreover, a photocurable resin can also be employ | adopted as a material of resin material R2. As the resin material R2 of the photocurable resin, for example, a prepolymer having an acrylate or methacrylate as an end group, or an oligomer, or a monomer or a mixture thereof and a mixture of at least a predetermined amount of a photopolymerization initiator is used. Can be used. In particular, ester-based, urethane-based, and epoxy-based acrylates and methacrylates can be suitably used.
Also, the composite resin material S can be formed by the same method as the resin material R1 and the method of filling the gap of R1.

  By using different types of resin materials R1 and R2 in combination in one composite resin material S in this way, it is possible to provide a shaped article having the characteristics of the different types of resin materials R1 and R2. For example, it has the advantage of the first resin material, and the disadvantage of the first resin material can be supplemented by the advantage of the second resin material.

  A modeling procedure of the composite resin material S shown in FIG. 1A will be described with reference to FIGS. 2 and 3. First, as shown in FIG. 2, in the first layer, as shown in FIG. 2, the resin material R1 is formed with an arrangement pitch of, for example, approximately 1: 1 and the Y-axis direction as the longitudinal direction. A gap according to the arrangement pitch remains between the resin materials R1.

  Similarly, in the second layer, which is an upper layer of the first layer, the resin material R1 is similarly formed at an arrangement pitch of approximately 1: 1, with the X-axis direction as the longitudinal direction. In the second layer, a gap remains along the Y-axis direction at a position between the plurality of resin materials R1.

  Thereafter, the same procedure is repeated, and the resin material R1 is formed so as to cross each other and be joined in the vertical direction between two layers that are adjacent between the upper and lower sides, thereby forming the cross structure of the resin material R1. In addition, the resin material R1 formed in each layer is formed using a liquid crystal polymer as a material, and given a predetermined shearing force at the time of formation, the molecular chains are aligned along the longitudinal direction. Thereby, the linear expansion coefficient of resin material R1 can be set to a very low value compared with other resin materials, for example, about 0.09 ppm / K.

  Subsequently, as shown in FIG. 3, the gap of the resin material R1 is filled with the resin material R2 by impregnating the molten resin material R2 with the molten resin material R2. The impregnation can be more effectively embedded by vacuum impregnation than impregnation at atmospheric pressure.

  When a thermoplastic resin is used as the resin material R2, the resin material R2 is solidified when the temperature falls below the melting temperature. Thereby, this resin material R2 is also formed in a cross-girder structure joined in the vertical direction between the first layer and the second layer adjacent to each other in the vertical direction. Note that the amount of impregnation of the resin material R2 is larger than the volume of the void due to the resin material R1 (a volume obtained by subtracting the volume of the resin material R1 from the volume of the rectangular parallelepiped covering the formation region of the resin material R1). (Greater than 100%). As a result, the gap portion can be sufficiently filled with the resin material R2, and the gap can be prevented from remaining without being filled.

Further, when a thermosetting resin is used as the resin material R2, after the impregnation is completed, a heating step for increasing the temperature of the composite resin material S to the curing temperature of the resin material R2 is executed. In this case as well, since the resin material R2 is cured or contracted in the heating step, the amount of impregnation of the resin material R2 is increased in anticipation of the curing shrinkage than the volume of the voids by the resin material R1 (more than 100%). Enlarged).
In addition, in the stage where the resin material R2 is impregnated into the gap between the resin materials R1 and then thermally cured, instead of completely curing the resin material R2, the curing process (thermal process) is temporarily stopped when the resin material R2 is in a semi-cured state. It is also possible to shift the resin material R2 from the semi-cured state to the fully cured state in the final heat pressing step.
Further, when a photocurable resin is used as the resin material R2, after the impregnation is finished, the composite resin material S is irradiated with light such as ultraviolet rays by a mercury lamp or an LED lamp. At first glance, it tends to be thought that only the surface that is the irradiated surface is cured, but since the composite resin material S of the present invention has a cross beam structure, irregular reflection of light rays is likely to occur at each lattice point, and curing proceeds deeper. . A semi-cured state capable of maintaining the shape for at least a short time is possible. When further curing is desired, the curing can be completed by performing a thermal process in the same manner as the thermosetting resin. The heating process can be replaced with a heating press process. Similarly to the thermosetting resin, the resin material R2 is cured or shrunk in the photocuring process or the heating process, so that the impregnation amount of the resin material R2 is larger than the volume of the voids by the resin material R1 in anticipation of the curing shrinkage. (Greater than 100%).

  2 and 3, the resin material R1 is formed in a cross-girder structure over a plurality of layers, and then the molten resin material R2 is poured (impregnated) into a gap between the resin materials R1 over the layers. The step of forming the composite resin material S was shown. The manufacturing process of the composite resin material S is not limited to this. For example, as shown in FIGS. 4 to 7, after the resin materials R1 are arranged and formed in one layer, a procedure for pouring the resin material R2 into the gap is performed, and these steps are repeated, thereby repeating the composite resin material S of FIG. 1A. It is also possible to form Further, it is also possible to separately spray or apply a filler material or an adhesive for connecting the resin materials R1 and R2. By using the filler material, the bonding force between the resin materials R1 and R2 can be improved, and even if a gap is generated between the two resin materials, the filler material is dispersed in the gap. Thereby, both resin materials can be effectively joined via a filler material. Here, the filler material is an inorganic or organic fine powder, also called a filler, and is often in the form of needles, rods, or fibers. As the material, glass fiber, mica, carbon, cellulose, metal and the like can be used. The filler material has been subjected to chemical surface treatment such as silane coupling treatment, aluminate treatment, titanate treatment, chromic acid treatment, and catalyzing treatment, and physical surface treatment such as plasma treatment, ion treatment, and ozone treatment. There may be.

In addition, as shown in FIG. 8, the stretching process is performed on the resin materials R1 and R2 formed over a plurality of layers to compress the dimensions in the stacking direction, and various fluctuation effects such as environmental temperature variations in the manufacturing process are affected. It is also possible to absorb and arrange a uniform plate.
Moreover, it is also possible to compress the dimension of a lamination direction by performing a hot press process instead of an extending process. In the case of the hot pressing process, the hot pressing process is executed at a temperature T1 between the softening temperature Ts2 and the melting temperature Tm2 of the resin material R2 having a lower melting temperature than the resin material R1, and then the resin material R1 having a higher melting point. The heating press is performed again at a temperature T2 that is equal to or higher than the softening temperature Ts1 and lower than the melting temperature Tm1. By performing hot pressing at such a temperature T2, the resin material R1 can be hot pressed without breaking the orientation in the resin material R1. As a result, the dimension in the stacking direction can be compressed, the gap between R1 and R2 can be further reduced, and the bonding force between the two can be increased. It is also possible to realize a surface shape (surface roughness) that is similar to the surface shape (surface roughness) of the parallel plate press surface used in the heating press.

  Next, a method for forming the resin material R1 will be described with reference to FIG. The resin material R1 can be formed by a method in which thread-like wire rods oriented in one direction in advance are arranged by high-precision positioning. However, since there is a limit to the alignment accuracy of the wire and the mechanical accuracy of the arrangement, it is preferable to form the wire by a so-called resin melt 3D printer (FDM method).

  In the case of a resin melt 3D printer, as shown in FIG. 9, the diameter of the discharge port 12 of the melt head 11 is as small as several μm to several hundred μm. Further, in the inside of the melt head 11, the distribution as shown in FIG. For this reason, a shearing force (shearing stress) is generated when a molten resin having a flow rate difference is passed through the discharge port. At this time, the molecular chain of the discharged molten resin acquires orientation. Further, when the melting head 11 moves relative to the modeling table (not shown), tension is generated in the molten resin by balancing the discharge amount and the moving speed. As the resin is cooled, the molecular chains are oriented and solidified in the direction of relative movement (swept direction). This property of orientation with respect to the sweep direction is a behavior peculiar to the molten resin method (FDM method) using a 3D printer. At this time, when a liquid crystal polymer is used as the resin, the molecular chain is particularly strongly oriented. As a result, the formed first resin material R1 can be made to have a very low linear expansion coefficient compared to a normal resin material without causing interfacial peeling or the like.

  The resin material R1 in one layer can also be formed by laminating a molten resin material over a plurality of layers as shown in the upper side of FIG.

  As described above, in the composite resin material S of the present embodiment, the resin material R1 having a low coefficient of linear expansion is incorporated in the cross beam structure. For this reason, in one layer of the composite resin material S, thermal expansion in the longitudinal direction of the resin material R1 is suppressed. The expansion coefficient of the composite resin material S is determined by the linear expansion coefficient of the resin material R1, the linear expansion coefficient of the resin material R2, and the blending ratio of both.

On the other hand, the thermal expansion coefficient in the short direction (radial direction) of the resin material R1 is larger than the expansion coefficient in the longitudinal direction. However, the resin material R1 is formed to have a cross-girder structure in the composite resin material S together with the resin material R2. For this reason, as shown in FIG. 10, even if the resin material R1 (liquid crystal polymer) expands in the radial direction at a high temperature (for example, at 120 ° C. and 220 ° C.), The deviation of the center position is suppressed by the resin material R2 (see FIG. 10). That is, the radial dimension of the resin material R1 changes, but the arrangement pitch is substantially unchanged.
Thus, the composite resin material S of this Embodiment has the outstanding characteristic that the change of the dimension according to a temperature change can be suppressed.

[Second Embodiment]
Next, a composite resin material S according to a second embodiment of the present invention will be described with reference to FIG.

  As in the first embodiment, the composite resin material S according to the second embodiment includes a resin material R1 made of a liquid crystal polymer and a resin material R2 made of a material different from the liquid crystal polymer. It is structured in a structure. However, in 2nd Embodiment, as shown in FIG. 11, resin material R1 has a discontinuous location (discontinuous point P) in the longitudinal direction. When the resin material R1 is formed by discharging the resin material R1 with the resin melt 3D printer, for example, with the X-axis direction as the longitudinal direction, the discharge is temporarily stopped at a predetermined position (discontinuous point P) in the discharge along the X-axis direction. After the discharge operation is stopped and a predetermined period elapses, the discharge operation is started again from the stop position. By such a process, the resin material R1 has discontinuous points at the point where the discharge operation is stopped. If such a discontinuous point exists, the molecular chain of resin material R1 will be cut | disconnected in the vicinity and connection force will fall. For this reason, the expansion / contraction rate of the resin material R1 is increased in the vicinity of the discontinuous point as compared with the case where there is no discontinuous point.

  As described above, by providing discontinuous points at predetermined intervals in the resin material R1, the linear expansion coefficient of the resin material R1 can be made different from that in the case where the discontinuous points are not given to the resin material. As a result, the thermal characteristics inside the composite resin material S can be finely adjusted. Further, when the composite resin material S as a whole has strain, the strain can be adjusted or reduced. Note that the density of discontinuous points may be uniform in one composite resin material S, or may vary in the vertical direction (stacking direction) and / or in the plane direction. When the density of the discontinuous points is different, different linear expansion coefficients are obtained depending on positions in one composite resin material S.

  As mentioned above, although several embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

S ... Composite resin material, R1, R2 ... Resin material, 11 ... Melting head, 12 ... Discharge port.

Claims (10)

A composite resin material including a plurality of types of resin materials,
The first layer and the second layer are repeatedly arranged in the stacking direction,
In the first layer, the first resin material is arranged with the first direction as a longitudinal direction and arranged with a gap in a second direction intersecting the first direction, and other than the first resin material The second resin material is arranged with the first direction as the longitudinal direction and arranged to fill the gap,
In the second layer, the first resin material is arranged with a third direction intersecting the first direction as a longitudinal direction and with a gap in a fourth direction intersecting the third direction. And the second resin material is arranged so that the third direction is a longitudinal direction and fills the gap,
As a result, the first resin material arranged in the first layer and the first resin material arranged in the second layer are joined in the vertical direction, and further arranged in the first layer. The second resin material and the second resin material arranged in the second layer are joined in the vertical direction,
The first resin material is a composite resin material characterized in that molecular chain orientation is aligned in the longitudinal direction.   The composite resin material according to claim 1, wherein the first resin material is a liquid crystal polymer.   The composite resin material according to claim 1, wherein a linear expansion coefficient of the first resin material is smaller than a linear expansion coefficient of the second resin material.   The composite resin material according to claim 1, wherein the first resin material has discontinuous portions in the longitudinal direction. In the method for producing a composite resin material,
A first resin material is formed with a first direction as a longitudinal direction and a gap in a second direction intersecting the first direction, and further, the first resin material is formed on the first layer in the first direction. And repeatedly forming the third direction intersecting the longitudinal direction and with a gap in the fourth direction intersecting the third direction,
A method of manufacturing a composite resin material, wherein a second resin material different from the first resin material is embedded in the gap.   The method for producing a composite resin material according to claim 5, wherein the first resin material is formed so that molecular chain orientation is aligned in the longitudinal direction.   The composite resin material according to claim 6, wherein the formation in which the molecular chain orientation is aligned in the longitudinal direction is a formation in which a discharge is performed while applying a shearing force by a resin melting method and a sweep is performed in the longitudinal direction. Method.   The method for producing a composite resin material according to claim 6, wherein the first resin material is a liquid crystal polymer.   6. The method for producing a composite resin material according to claim 5, wherein the embedding of the second resin material is resin impregnation.   The method for producing a composite resin material according to claim 5, wherein the first resin material is formed so as to have discontinuous portions in the longitudinal direction.

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