KR100795174B1 - Carbon fabric for carbon nanotube coated fishing rod and its manufacturing method and carbon fishing rod using this carbon fabric - Google Patents

Abstract

According to the present invention, by manufacturing a fishing rod using a fabric impregnated with carbon yarn in an application layer coated with an epoxy varnish dispersed with carbon nanotubes, shear strength, tensile strength, and flexural strength are improved as compared to a fishing rod using a conventional carbon fabric. Carbon nanotubes coated with carbon nanotubes characterized by excellent impact resistance and a method for manufacturing the same and a carbon fishing rod using the carbon fabric, the present invention is compared to the fishing rods using a conventional carbon fabric shear strength, tensile The performance of strength and flexural strength is improved, so the impact resistance from external impact is strong, and the surface of the carbon fishing rod can be vivid black color by the coating of carbon nanotube. There is an advantage that can reduce the weight due to the manufacturing process and unnecessary painting process.

Description

Carbon fiber for fishing rod with coating carbon nano tube and Method for manufacturing of the same and Fishing rod by using of the same}

1 is a perspective view of a carbon nanotubes coated with carbon nanotubes according to the present invention.

2 is a cross-sectional view taken along the line AA ′ of FIG. 1.

Explanation of symbols on the main parts of the drawings

1: Release paper 2: Epoxy varnish layer

3: carbon yarn layer 10: carbon fabric

According to the present invention, by manufacturing a fishing rod using a fabric impregnated with carbon yarn in an application layer coated with an epoxy varnish dispersed with carbon nanotubes, shear strength, tensile strength, and flexural strength are improved as compared to a fishing rod using a conventional carbon fabric. It relates to a carbon nanofiber coated carbon cloth and its manufacturing method characterized by excellent impact resistance and a carbon fishing rod using the carbon fabric.

In general, a fishing rod manufactured using carbon material has the advantage of being light and strong in resilience due to its elasticity, while the impact resistance is weak, so that the fishing rod easily breaks under the load of the fish in the process of lifting the fishing rod when the fish are being bitten. Even though there is a problem, although a material that can solve the above problems is not developed at present, the fishing rod made of carbon is currently widely used because it is light.

On the other hand, carbon nanotube material is 100 times stronger than steel, and carbon fiber is broken even when only 1% is deformed, while carbon nanotube is a new material that can withstand 15% deformation. Although carbon materials are emerging as the most attracting materials, carbon nanotubes have been applied to carbon fishing rods, and many research and development efforts have been made to solve the above-mentioned problems. van der Waals) Because carbon nanotubes have the property of agglomeration with each other by surface forces (~ 950 meV / nm) such as manpower, numerous efforts have been made to uniformly disperse new carbon nanotubes and apply them to carbon rods. Attempts have been made, but this has not been solved fundamentally.

In addition, many researches are being made to apply carbon nanotubes to new materials in various industrial fields. However, the coagulation phenomenon of carbon nanotubes is a three-dimensional network structure that can improve mechanical strength and conduction characteristics. Disruption of carbon nanotubes is the biggest obstacle to the creation of the polymer composite market. In addition, there is a problem that the high mechanical properties of the carbon nanotubes are not sufficiently expressed due to the insufficient adhesion between the polymer matrix and the nanotube interface to the external load generated in the matrix to the nanotubes.

The present invention for solving the above problems by uniformly dispersing carbon nanotubes, a new material having the property of agglomeration with each other in the epoxy varnish composition, so that carbon nanotubes are uniformly dispersed in the carbon varnish layer carbon in the longitudinal direction of the fishing rod It is an object of the present invention to provide a carbon nano-coated carbon cloth coated with a carbon nanotube and a method of manufacturing the same, characterized in that the yarn is flattened and then impregnated.

In addition, the present invention is a carbon fishing rod manufactured using carbon nanofibers coated with carbon nanotubes uniformly, compared to the conventional fishing rods using carbon fabrics, shear strength, tensile strength and flexural strength are improved, impact resistance from external impact Another object of the present invention is to provide a fishing rod manufactured using carbon nanotubes coated with carbon nanotubes.

In addition, the present invention by producing a carbon fabric fishing rod using an epoxy varnish in which carbon nanotubes are uniformly dispersed, the surface of the fishing rod is uniform by carbon nanotubes uniformly dispersed in the epoxy varnish, vivid black color by the carbon nanotubes In order to provide a fishing rod manufactured using carbon nanotube coated carbon fabric characterized in that the black fishing rod can omit the coating process, thereby reducing unnecessary weight due to the manufacturing process and coating process. There is another purpose.

Referring to the configuration of the present invention for achieving the above problems in detail as follows.

The present invention in a carbon fabric for fishing rods using carbon yarn,

The fishing rod carbon fabric is coated with an epoxy varnish in which carbon nanotubes are uniformly dispersed on an upper surface of a release paper;

A carbon yarn layer impregnated with carbon yarns arranged flatly in the longitudinal direction of the fishing rod on top of the epoxy varnish coating layer;

It relates to a carbon nano-coated carbon fabric coated carbon nanotubes characterized in that the semi-cured.

According to the present invention, the term 'carbon' in the context of the specification refers to the term 'carbon' or 'carbon', such as carbon yarns, carbon nanotubes, carbon fabrics and carbon rods, depending on the combined content of terms used together. For the sake of convenience, proper expression is used.

The carbon nanotubes used in the present invention are uniformly dispersed in an epoxy varnish, and then produced a carbon fishing rod with a carbon fabric manufactured using the epoxy varnish, so that shear strength, tensile strength, and flexural strength compared to conventional fishing rods using carbon fabric. It is excellent in that the impact resistance from external impacts to have a good physical properties.

In the present invention, it is preferable that the epoxy varnish in which the carbon nanotubes are uniformly dispersed is added to 6 to 8% by weight of carbon nanotubes to 92 to 94% by weight of the epoxy varnish to be uniformly dispersed. When the amount of the epoxy varnish is less than 92% by weight or the amount of carbon nanotubes exceeds 8% by weight, the shear strength of the carbon fishing rod is increased as the amount of carbon nanotubes is increased relative to the amount of the epoxy varnish. , Physical properties such as tensile strength and flexural strength are improved, and the impact resistance against impact from the outside due to the improvement of shear strength has good physical properties, but it may exhibit more properties than necessary as carbon fishing rods, and it is expensive carbon nano. There is a concern that an uneconomical problem may occur due to an increase in the content of the tube.

The epoxy varnish is preferably composed of 25 to 45% by weight of epoxy resin as the main ingredient, 2 to 4% by weight of dicyanamide as a curing agent, and 51 to 73% by weight of a solvent. When the amount of epoxy resin is less than 25% by weight or the amount of dicyanamide is more than 4% by weight, the amount of curing agent is relatively higher than that of the main body, and the epoxy varnish becomes excessively hardened, causing cracks on the surface of the varnish. If the amount of epoxy resin is more than 45% by weight or the amount of dicyanamide is less than 2% by weight, there is a sufficient amount of hardening due to the insufficient amount of curing agent relative to the amount of main body. It does not occur, and there exists a possibility that the mechanical properties etc. of the coating film of an epoxy varnish may fall. In addition, when the amount of the solvent used is less than 51% by weight, the viscosity becomes high, and the efficiency of coating workability of the epoxy varnish decreases, and the dispersibility of the carbon nanotubes added to the epoxy varnish decreases, so that the added carbon nanotubes aggregate. When the amount of the solvent used exceeds 73% by weight, the amount of the solvent is increased relative to the amount of the epoxy resin, so that the dispersibility of the carbon nanotubes is improved, but the viscosity of the epoxy varnish decreases, so that the epoxy There is a concern that the efficiency of the coating workability of the varnish is lowered, and a problem that a large curing time is required for volatilization of the solvent at the time of curing occurs.

The epoxy resin is preferably a bisphenol-type epoxy resin, the solvent usable in the present invention is butyl glycidyl ether, aryl glycidyl ether, diglycidyl ether, ketones, ethyl alcohol, propyl alcohol, butyl alcohol It is preferable to select and use 1 type or more among them.

The carbon yarn impregnated in the epoxy varnish coating layer in the above is preferably impregnated at an amount of 30 to 300 g / m 2 with respect to the amount of epoxy varnish at 30 to 90 g / m 2. At this time, when the amount of epoxy varnish is less than 30 g / ㎡ or the amount of carbon yarn exceeds 300 g / ㎡, the amount of carbon yarn is too much relative to the amount of epoxy varnish, so that the carbon yarn to the epoxy varnish layer If it is not sufficiently impregnated, there is a risk of defects in the arrangement of the carbon fabric, and if the amount of epoxy varnish exceeds 90 g / m 2 or the amount of carbon yarn is less than 30 g / m 2, Due to the shortage, mechanical properties such as impact resistance may be deteriorated due to the decrease in shear strength, tensile strength and flexural strength, compared to a fishing rod using carbon fabric.

The carbon nanotubes coated with carbon nanotubes of the present invention as described above are a composite material in a prepreg state in a semi-cured state, and should be stored using a polyethylene bag or the like. After cutting the carbon fabric in the prepreg) state, the cut carbon fabric should be used promptly.

Meanwhile, the carbon nanotube coated carbon nanotube of the present invention will be described in detail with reference to FIGS. 1 and 2.

For reference, Figure 1 is a perspective view of a carbon nanofiber coated carbon nanotubes according to the present invention, Figure 2 is a cross-sectional view of the line AA 'of FIG.

The present invention is a method for producing a carbon cloth for fishing rods produced by a conventional method,

Preparing an epoxy varnish composition in which carbon nanotubes are dispersed by uniformly dispersing carbon nanotubes after adding carbon nanotubes to the epoxy varnish;

Applying an epoxy varnish composition in which the carbon nanotubes are dispersed on the upper surface of the release paper (1) to form an epoxy varnish layer (2);

A process of impregnating the carbon yarn layer (3) in the epoxy varnish by arranging the carbon yarn flatly in the longitudinal direction of the fishing rod on the epoxy varnish layer (2);

Impregnating and then semi-curing the epoxy varnish on the carbon yarn layer (3);

Carbon nanotubes coated with carbon nanotubes 10 are manufactured through.

The amount of carbon nanotubes added to the epoxy varnish, the composition ratio of the epoxy varnish composition, and the amount of the epoxy varnish composition and the carbon yarn used in the method of manufacturing the carbon nanotubes coated with carbon nanotubes 10 are already Since it has been described in detail above, it will be omitted here.

In the present invention, first, by coating the epoxy varnish composition in which the carbon nanotubes are dispersed on the upper surface of the release paper (1) to form an epoxy varnish layer (2), the carbon yarn on the upper portion of the fishing rod is arranged in the longitudinal direction of the fishing rod When the carbon yarn layer 3 is formed, the epoxy yarn is impregnated into the epoxy varnish while the epoxy varnish penetrates through the fine gaps of the arranged carbon yarn layer 3. The epoxy varnish is impregnated with carbon yarn and then semi-cured.

In the present invention, the carbon yarn layer 3 is preferably impregnated with an epoxy varnish and then semi-cured in a prepreg state at a pressure of 5 to 10 kg / cm 2 at a temperature of 110 to 130 ° C. At this time, when the temperature is less than 110 ℃ or the pressure is less than 5 kg / ㎠, there is a fear that a sufficient semi-curing does not occur by the low temperature and pressure, and the temperature exceeds 130 ℃ or pressure is 10 kg / ㎠ When exceeding, the carbon fabric may be completely hardened or high pressure may be applied to the carbon fabric to deform the shape of the carbon fabric.

When the carbon fabric is not completely cured and is in a semiprecured state in a prepreg state, the process of winding the fabric for cutting and mandrel of the fabric is easy in the manufacturing process of the carbon fishing rod, and is formed in the form of a fishing rod. Completely cured in the state. At this time, in order to use the carbon fabric in the manufacturing process of the fishing rod may be used after separating the release paper attached to the lower portion of the carbon fabric.

Meanwhile, the configuration of the fishing rod manufactured using carbon nanotubes coated with carbon nanotubes is as follows.

The present invention provides a carbon fishing rod manufactured by winding a carbon fabric in a mandrel by a conventional method and molding the same,

The carbon fabric is a composite material in a prepreg state in a semi-cured state, wherein an epoxy varnish layer in which carbon nanotubes are uniformly dispersed and a carbon yarn in the epoxy varnish layer are flattened in the longitudinal direction of a fishing rod. Made up of carbon yarn layers impregnated with epoxy varnishes,

And it is about a carbon fishing rod uniformly coated with carbon nanotubes, characterized in that the carbon fabric is wound on the mandrel by a conventional method to de-core after complete curing.

The amount of carbon nanotubes used in the carbon fishing rod, the composition ratio of the epoxy varnish composition, the amount of the epoxy varnish composition and the carbon yarn used are already described in detail above, and thus will be omitted here. And the carbon fabric used in the above is to use the carbon fabric of the release paper is separated.

In the above, the carbon fabric is preferably wound on a mandrel by a conventional method and completely cured at a pressure of 1.0 to 5.0 kg / cm 2 at a temperature of 120 to 130 ° C. At this time, when the curing temperature is less than 120 ℃ or the pressure is less than 1.0 kg / ㎠, sufficient curing does not occur due to the low curing temperature and pressure, resulting in a decrease in shear strength, tensile strength and bending strength of the carbon fishing rod. If there is a possibility that the mechanical properties such as impact properties are not sufficiently exhibited, and if the curing temperature exceeds 130 ° C. or the pressure exceeds 5.0 kg / cm 2, the mechanical properties as described above may be lowered due to the excessive hardening of the carbon fabric. There is concern.

In the present invention, a method of winding and shaping a carbon fabric coated with carbon nanotubes uniformly on a mandrel to form a carbon fishing rod in the present invention adopts a conventional method, and is generally used for manufacturing a carbon fishing rod. The method is as follows.

1st process (Fabric cutting process)

The semi-cured carbon fabric, not fully cured and in the prepreg state, is precisely cut into the designed shape. The cut carbon fabric should be used quickly. Keep carbon fabrics frozen if not used quickly.

2nd process (mandrel preparation process)

Clean the mandrel and apply the outer surface of the mandrel using a release agent such as paraffin wax or silicone oil.

3rd step (apply adhesive resin to mandrel)

Epoxy resin is applied to the surface of the mandrel to which the release agent is applied to the surface of the mandrel.

4th process (carbon fabric winding process)

Using a rolling table, the carbon fabric in a prepreg, semi-hardened state is wound on the mandrel while the mandrel is rotated to form the shape of a fishing rod barrel.

5th process (heat curing process)

A mandrel wound with carbon fabric is placed in a heating furnace and cured by heating at a low temperature at 125 ± 5 ° C. for 2 hours. At this time, the rod rod material is cured and the resin solution constituting the coating layer is molded and the rod rods having a firm bonding force are molded. If the heating temperature and the heating time is less than the temperature and time range conditions, there is a risk that the mechanical properties of the carbon fishing rod may be lowered without sufficient hardening occurs, even if the temperature and time range conditions are exceeded On the contrary, the mechanical properties of the carbon fishing rod may be lowered due to the fire.

6th process (separation process of fishing rod barrel from mandrel)

When the fishing rod lon hardened in the fifth step is separated from the mandrel, the fishing rod lon is completed.

As described above, the carbon nanotubes coated with carbon nanotubes of the present invention have a vivid black color by the carbon nanotubes, whereas in the manufacturing process of a conventional carbon fishing rod, the coating process is finally performed on the surface of the carbon fishing rod. The invention is characterized in that unnecessary weight can be reduced by omitting the coating process on the surface of the carbon fishing rod.

Hereinafter, the configuration of the present invention will be described in detail with reference to the following Examples, but the present invention is not necessarily limited to the following Examples.

1. Fabrication of carbon fabric coated with carbon nanotubes

(Example 1)

Epoxy varnish (Carbon, Korea) was applied to the upper surface of the release paper in the amount of 30 g / m2, and carbon yarn (Korea, Korea) was added thereon at a rate of 30 g / m2. After flattening, impregnating the epoxy varnish layer and semi-cured at a temperature of 125 ± 5 ℃. At this time, the epoxy varnish used in the above was used by dispersing uniformly by adding 6% by weight of carbon nanotubes (ILJIN Nanotech, Korea) to 94% by weight of epoxy varnish.

(Example 2)

Epoxy varnish (Carbon Korea, Korea) was applied to the upper surface of the release paper in the amount of 90 g / m2, and carbon yarn (Korea Carbon, Korea) was added to the carbon fiber in the length direction of the fishing rod at the rate of 300 g / m2. After flattening, impregnating the epoxy varnish layer and semi-cured at a temperature of 125 ± 5 ℃. At this time, the epoxy varnish used in the above was added to the epoxy varnish 92% by weight of carbon nanotubes (ILJIN Nanotech, Korea) 8% by weight was uniformly dispersed.

(Comparative Example 1)

Epoxy varnish (Carbon Korea, Korea) was applied to the upper surface of the release paper in the amount of 90 g / m2, and carbon yarn (Korea Carbon, Korea) was added to the carbon fiber in the length direction of the fishing rod at the rate of 300 g / m2. After flattening, impregnating the epoxy varnish layer and semi-cured at a temperature of 125 ± 5 ℃. At this time, the epoxy varnish used in the above was used, the epoxy varnish is not added to the carbon nanotubes, unlike Examples 1 and 2.

2. Preparation of fishing rod barrel and test specimen using carbon nanotube coated carbon fabric

0.72 ± 0.01 mm thick on a mandrel with a diameter of 20 mm, which was immediately pretreated after cutting the semi-cured, nonprecured, semi-precured carbon fabric prepared according to the methods of Examples 1, 2 and Comparative Example 2. After winding to a temperature of 125 ± 5 ℃ completely cured to a pressure of 3.0 kg / ㎠ and de-centered the mandrel to form a fishing rod.

In addition, the semi-cured semi-precured carbon fabric prepared in the method of Examples 1 and 2 and Comparative Example 2 was completely cured under the above conditions in the form of fabric and used as a test piece. It was.

3. Evaluation of fishing rod barrel and test specimen

The results of evaluating the physical properties of the shear strength, tensile strength and flexural strength for the carbon fishing rod and the test piece manufactured using the carbon fabric of Examples 1, 2 and Comparative Example 1 are as follows.

division Example Comparative example One 2 One Shear strength (kgf / ㎠) 20 20.3 10 Tensile strength (kgf / ㎠) 490 494 390 Flexural strength (kgf / ㎠) 26.7 26.3 20.7

According to the evaluation of Table 1, in the case of a fishing rod manufactured using the samples of Examples 1 and 2, which are carbon fabrics manufactured using epoxy varnishes in which carbon nanotubes are uniformly dispersed, carbon nanotubes are added. Compared to the fishing rod manufactured using the sample of Comparative Example 1, which is a carbon fabric manufactured using an epoxy varnish, which has not been used, the impact resistance is excellent due to its excellent shear strength. Compared to Example 1, it was evaluated that the physical properties of tensile strength and flexural strength were excellent.

And in the case of a fishing rod manufactured using the samples of Examples 1 and 2, which are carbon fabrics manufactured using epoxy varnishes in which carbon nanotubes are uniformly dispersed, although not included in the evaluation item, epoxy without carbon nanotubes added thereto. Since the black color of the surface of the carbon fishing rod barrel is much clearer than that of the fishing rod manufactured using the sample of Comparative Example 1, which is a carbon fabric manufactured using varnish, the black color is applied to the surface of the carbon fishing rod by the conventional method. In the process of manufacturing the carbon fishing rod according to the present invention, the coating process can be omitted in the case of black color, and there is a feature that can reduce unnecessary weight due to the painting process.

       And carbon nanotubes coated with carbon nanotubes of the present invention is not necessarily used for carbon fishing rods, fishing rods, inline skate support, golf clubs, tennis rackets, badminton rackets, car bumpers, industrial equipment, aerospace It can be applied to various fields such as cycle body.

As described above, the present invention has proved its superiority through the above embodiments, but the present invention is not necessarily limited only by the above configuration, and various substitutions may be made without departing from the technical spirit of the present invention. , Modifications and variations are possible.

According to the present invention having the above structure, carbon nanotubes, which are new materials, are uniformly dispersed in an epoxy varnish composition and applied to carbon rods for fishing rods, whereby carbon rods manufactured using carbon nanorods coated with carbon nanotubes are uniformly coated. Compared with the conventional fishing rod using carbon fabric, the performance of shear strength, tensile strength and flexural strength is improved, so the impact resistance from external impact is strong, and carbon nanotubes can show the vivid black color on the outer surface of the carbon fishing rod. If the fishing rod is black at the time of manufacture, the coating process can be omitted, so that the coating process of the carbon fishing rod can be omitted, unnecessary weight due to the painting process can be reduced, and thus the manufacturing process can be shortened. .

Claims (12)

In the carbon fabric for fishing rods using carbon yarn, The fishing rod carbon fabric is coated with an epoxy varnish in which carbon nanotubes are uniformly dispersed on an upper surface of a release paper; A carbon yarn layer impregnated with carbon yarns arranged flatly in the longitudinal direction of the fishing rod on top of the epoxy varnish coating layer; Carbon nanotubes coated with carbon nanotubes, characterized in that the semi-cured. The method of claim 1, The carbon nanotubes are carbon nanotubes coated with carbon nanotubes, characterized in that the carbon nanotubes 6 ~ 8% by weight added to 92 ~ 94% by weight epoxy varnish. The method of claim 2, The epoxy varnish is carbon nanotube-coated fishing rod carbon fabric, characterized in that consisting of 25 ~ 45% by weight of the main epoxy resin, 2 ~ 4% by weight of diyanamide (hardener) and 51 ~ 73% by weight of the solvent . The method of claim 3, wherein Wherein the epoxy resin is carbon nanotube coated carbon cloth characterized in that the bisphenol-type epoxy resin. The method of claim 3, wherein The solvent may be selected from the group consisting of butylglycidyl ether, arylglycidyl ether, diglycidyl ether, ketones, ethyl alcohol, propyl alcohol, butyl alcohol, and the like. Coated fishing rod carbon fabric. The method of claim 1, Carbon yarn impregnated in the epoxy varnish coating layer for carbon nanotube-coated fishing rod, characterized in that the amount of carbon yarn is impregnated in the ratio of 30 ~ 300g / ㎡ with respect to the amount of epoxy varnish 30 ~ 90 g / ㎡ Carbon fabric. In the manufacturing method of the carbon cloth for fishing rods that are usually manufactured, Preparing an epoxy varnish composition in which carbon nanotubes are dispersed by uniformly dispersing carbon nanotubes after adding carbon nanotubes to the epoxy varnish; Applying an epoxy varnish composition in which the carbon nanotubes are dispersed on an upper surface of a release paper to form an epoxy varnish layer; Impregnating the carbon yarn layer on the epoxy varnish by arranging the carbon yarn flatly in the longitudinal direction of the fishing rod on the epoxy varnish layer; Semi-curing the epoxy yarn varnish after the carbon yarn layer; Carbon nanotube-coated fishing rod carbon fabric manufacturing method characterized in that is manufactured through The method of claim 7, wherein Epoxy varnish in which the carbon nanotubes are dispersed in the carbon nanotube-coated fishing rod carbon fabric, characterized in that 6 to 8% by weight of carbon nanotubes added to 92 ~ 94% by weight epoxy varnish. The method of claim 7, wherein The epoxy varnish is carbon nanotube-coated fishing rod carbon fabric, characterized in that consisting of 25 ~ 45% by weight of the main epoxy resin, 2 ~ 4% by weight of diyanamide (hardener) and 51 ~ 73% by weight of the solvent Manufacturing method. The method of claim 7, wherein Carbon nanotubes impregnated in the epoxy varnish layer carbon nanotube-coated fishing rod carbon, characterized in that the amount of the carbon yarns impregnated in the ratio of 30 ~ 300g / ㎡ to the amount of epoxy varnish 30 ~ 90 g / ㎡ Fabric manufacturing method. In the carbon fishing rod manufactured by winding a carbon material in a mandrel by a conventional method and molding, The carbon fabric is a composite material in a prepreg state in a semi-cured state, wherein an epoxy varnish layer in which carbon nanotubes are uniformly dispersed and a carbon yarn in the epoxy varnish layer are flattened in the longitudinal direction of a fishing rod. Made up of a layer of impregnated carbon yarn, And a carbon fishing rod uniformly coated with carbon nanotubes, wherein the carbon fabric is wound on the mandrel by a conventional method and de-cored after complete curing. The method of claim 11, Carbon nanotubes impregnated in the epoxy varnish layer is carbon nanotube-coated carbon fishing rod, characterized in that the amount of carbon yarns impregnated in the ratio of 30 ~ 300g / ㎡ with respect to the amount of epoxy varnish 30 ~ 90 g / ㎡.

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