JP2002266237A - Metal-coated fiber material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a metal-coated fiber material having excellent corrosion resistance and coat strength. SOLUTION: This metal-coated fiber material is characterized by laminating an electroconductive metal coat onto a fiber material and further a corrosion- resistant metal coat onto the surface of the electroconductive metal coat. The metal-coated fiber material is obtained by forming at least either one of the coats of the electroconductive metal coat and the corrosion-resistant metal coat and then heat-treating the resultant fiber material at a temperature not lower than the crystallization temperature of the fiber material and lower than melting temperature thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal-coated fibrous body having excellent adhesion to a metal coating provided on the fibrous body and having excellent corrosion resistance. Specifically, for example, in a metal-coated fiber body in which a metal coating is coated on the surface of a synthetic fiber or a natural fiber such as a nylon fiber body or a polyester fiber body, the metal coating has an excellent adhesion strength and is resistant to chlorine, sulfur, and oxygen. The present invention relates to a metal-coated fiber having excellent corrosion resistance.

[0002]

2. Description of the Related Art A conductive fiber or a conductive yarn obtained by coating a metal thin film on the surface of a synthetic fiber made of a polymer material such as a nylon fiber or a polyester fiber has been conventionally known, and is used to enhance the adhesion of the metal coating film. Various methods have been tried. For example, when coating copper sulfide, a method of pre-treating a polymer material with a dye having a copper ion capturing group, bonding copper ions to the polymer material, and then sulfiding the material.
(Japanese Patent Publication No. 01-37513) and a method of bonding copper sulfide to a copper ion capturing group after attaching a copper ion capturing group to the fiber surface roughened by alkali treatment (Japanese Patent Laid-Open No. 06-298973) and the like are known. ing. In addition, for those which are difficult to apply metal plating such as aramid fiber, polyvinylpyrrolidone (PVP)
There is known a method of forming metal plating by depositing metal ions by utilizing the method and reducing the same to form metal plating (Japanese Patent Publication No. 06-506267).

[0003]

However, the above-mentioned PVP
Is not common since the type of fiber is limited. Further, the coating method for introducing a copper ion trapping group has a problem that the metal coating is limited to copper or a compound thereof and the adhesion strength of the metal coating is not always sufficient. In addition, if the fibers are roughened by alkali treatment, the adhesion strength of the metal coating can be generally increased, but a sufficient effect cannot be obtained unless the degree of the surface roughening and the state of the metal coating are appropriate. Moreover, when the metal-coated fiber is used for clothing and the like, it is necessary to withstand severe use conditions such as washing and abrasion. Further, from the viewpoint of conductivity, a disconnection state is caused even by partial peeling of the metal coating, so that the metal coating is required to have a highly reliable adhesion strength. An object of the present invention is to solve such a problem in a conventional metal-coated fiber, and to provide a metal-coated fiber having excellent coating strength and corrosion resistance.

[0004]

According to the present invention, a fibrous body having a metal coating is provided with a conductive metal coating provided on the surface of the fibrous body as a base, and further provided with a corrosion-resistant metal coating on the surface to provide both a conductive property and a resistance. With increased corrosiveness,
Preferably, by applying a heat treatment in a predetermined temperature range after providing the metal coating, the adhesion strength of the metal coating (coating strength)
Is greatly improved, and the elasticity of the fibrous body is significantly reduced.

That is, the present invention relates to a metal-coated fiber having the following constitution. (1) A metal-coated fibrous body comprising a fibrous body and a conductive metal coating and a corrosion-resistant metal coating on the surface thereof. (2) The metal-coated fibrous body according to the above (1), wherein the conductive metal coating and / or the corrosion-resistant metal coating are formed in a plurality of layers. (3) After providing at least one of a conductive metal coating and a corrosion-resistant metal coating, the above-mentioned heat treatment is performed at a temperature not lower than the crystallization temperature and lower than the melting temperature of the fibrous body.
The metal-coated fibrous body according to any one of (1) and (2). (4) The conductive metal is at least one of silver, copper, nickel, tin, zinc, or a mixture or alloy thereof, and the corrosion-resistant metal is at least one of gold, platinum, palladium, osmium, and rhodium. The metal-coated fibrous body according to any one of the above (1), (2) and (3). (5) The above (1) to (4), wherein the metal coating has an orange peel.
The metal-coated fiber body according to any one of the above. (6) The metal-coated fiber according to any one of the above (1) to (5), wherein the thickness of the corrosion-resistant metal coating is 1 nm to 500 nm. (7) The metal-coated fibrous body according to any one of the above (1) to (6), wherein a paraffin layer and a wax layer are provided on the surface of the corrosion-resistant metal coating. (8) The above wherein the fibrous body is a single fibrous body of a synthetic fibrous body such as a polyester fibrous body, a nylon fibrous body or an acrylic fibrous body, or a composite fibrous body comprising two or more of these components.
The metal-coated fibrous body according to any one of (1) to (7).

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments. The metal-coated fibrous body of the present invention is characterized in that a fibrous body is laminated with a conductive metal coating and a corrosion-resistant metal coating on the surface thereof. To obtain a metal fiber with high conductivity and excellent corrosion resistance by providing a metal coating that is durable against corrosion by chlorine, sulfur, and oxygen on the surface of a conductive metal coating. Can be. Here, the fibrous body refers to short fibers (staples), long fibers (filaments), various processed yarns (filament yarns, spun yarns, etc.) composed of these fibers,
These are widely referred to as fibrous bodies.

The fibrous body used in the present invention includes synthetic fibers mainly composed of a polymer material such as polyester, polyamide, acrylic, polyolefin and nylon; natural fibers such as cotton; cellulosic fibers such as rayon; In addition to fiber, inorganic fiber such as glass fiber,
Or a composite fiber body of these or the like can be mentioned. These fiber bodies may be a blend of two or more, or a blend of synthetic fibers and natural fibers. Of these, the present invention is particularly useful for those using synthetic fibers such as polyester fibers, acrylic fibers, and nylon fibers.

[0008] It is difficult to coat a long fiber of a polyester with a metal coating conventionally. However, according to the present invention, a metal-coated fiber having high adhesion strength can be obtained. These fibers preferably have a single fiber thickness of 0.1 to 15 d (denier). If the fiber diameter is smaller than 0.1 d, the strength of the fiber is insufficient, which is not preferable. On the other hand, if the fiber diameter is larger than 15 d, the fibrous body becomes hard and loses flexibility when metal coating is applied, which is not suitable.

Among the metal coatings provided on the fibrous body, the conductive metal coating serving as a base may be at least one of silver, copper, nickel, tin, zinc, and a mixture or alloy thereof. In addition, the coating method or means is not limited. Electrolytic plating and chemical (electroless) plating,
Alternatively, vacuum evaporation or the like can be used.

The corrosion-resistant metal coating provided on the surface of the conductive metal coating includes gold, platinum, palladium, osmium,
At least one of rhodium can be used. By providing such a noble metal coating on the surface, excellent durability against corrosion by chlorine, sulfur, and oxygen can be obtained. The layer thickness of the corrosion resistant metal coating is suitably from 1 nm to 500 nm. If the coating is thinner, the corrosion resistance decreases.
In addition, when the underlying conductive metal coating is a white metal such as silver, nickel, or tin, when gold is used as the corrosion-resistant metal coating, if the layer thickness is greater than 500 nm, the yellow color becomes strong, and the white Decrease the degree. When the thickness of the gold coating is less than 500 nm, a conductive fiber having a whiteness (L value) of about 50 or more can be obtained. Whiteness is measured by the Lab method based on Hunter's equation. Platinum, palladium and osmium do not turn yellow, so 500
It may be thicker than nm. Incidentally, palladium, osmium, and the like are expensive, so that gold and platinum are preferable from the viewpoint of economy.

Each of the conductive metal coating and the corrosion-resistant metal coating may be formed of a plurality of layers by using different metal elements or the like. For example, a thin nickel base layer is provided on the surface of the fibrous body, a silver-plated surface is provided thereon to form a conductive metal coating layer having a two-layer structure, and further a gold or platinum corrosion-resistant metal coating layer is provided on the surface. Form. The corrosion-resistant metal coating layer may be formed of two layers of gold and platinum. As described above, by forming the conductive metal coating and the corrosion-resistant metal coating in a plurality of layers, the corrosion resistance to the conductive metal coating such as silver, nickel, and copper is increased, and the chemical stability is improved. Reliability for long-term use required for materials and the like can be improved.

The metal-coated fibrous body of the present invention preferably has an orange peel on the metal-coated surface, so that a fiber body having excellent adhesion strength can be obtained. An orange peel refers to a surface condition in which the skin resembles orange peel and has a surface roughness of approximately 0.01 to 1 μm, and is called yuzu skin or pear skin. The fact that the metal-coated surface has an orange peel means that the metal-coated surface is in an orange peel state. Since the layer thickness of the conductive metal coating and the corrosion-resistant metal coating is generally about several hundred nanometers (nm) or less, those having an orange peel have a rough surface up to the back side of the coating and have a fibrous body. The surface of the metal coating enters the back surface of the conductive metal coating in a roughened state and exerts an anchor effect, so that the coating strength of the metal coating is large.

The metal-coated fibrous body of the present invention is preferably obtained by heat-treating the fibrous body at a temperature within a range from the crystallization temperature of the fibrous body to the melting point. By this heat treatment, the structure of the fibrous body is adjusted. Specifically, for example, the recrystallization of the fibrous body is advanced, and the coating strength of the metal coating is significantly increased, and shrinkage due to heating can be significantly suppressed. The heat treatment may be performed after providing at least one of the conductive metal coating and the corrosion-resistant metal coating.

In general, when synthetic fibers such as polyester, nylon, and polyacryl are heated, the state gradually changes to glass transition, crystallization, and melting (melting) according to the heating temperature.
In many cases, they soften due to the glass transition and subsequently shrink significantly during the crystallization stage. When the metal-coated fibrous body is heated to a temperature higher than the crystallization temperature of the fibrous body, the fibrous body softens and its surface enters fine irregularities in the contact surface between the fibrous body and the metal coating, and the metal coating and the fibrous body are anchored. Adhesion, and a large coating strength can be obtained.

The heating temperature is suitably, for example, 170 to 240 ° C. for polyester fiber, 110 to 180 ° C. for nylon fiber, and 150 to 200 ° C. for acrylic fiber. In this heat treatment, the temperature after the temperature is increased to 5 to sufficiently soften the fibrous body.
It is preferable to hold for about 200 minutes. When the heating temperature is higher than the melting temperature of the fibrous body, the entire fibrous body is melted, the crystallinity is reduced, and the fibrous body is destroyed, so that the metal coating cannot be held.

In the process of cooling after softening the fibrous body, the structure of the fibrous body is adjusted. For example, by heating, the molecular arrangement of the fibers is aligned and crystallized, the fibrous body contracts in a state of being in close contact with the metal coating, and the metal coating shrinks while maintaining the integrity with the fibrous body in the slow cooling step, thereby increasing the coating strength. improves. In this cooling step, if the cooling rate of the metal-coated fiber body is not appropriate, sufficient coating strength cannot be obtained. That is, the synthetic fiber has a larger coefficient of linear expansion than a metal. For example, the coefficient of linear expansion of polyester fiber, acrylic fiber, or the like is about twice that of silver, copper, or the like, and the degree of cooling and shrinking is large. For this reason, if the cooling rate is too fast, the shrinkage of the metal coating cannot follow the shrinkage of the fibrous body, and the contact surface between the fibrous body and the metal coating may be partially peeled off. Is preferred.

The heating means may be heating by infrared rays in addition to a heating furnace, a hot blast furnace or the like. Further, heat treatment using pressurized steam in the plating tank may be used. The heat treatment atmosphere may be air, but it is preferable to perform the heat treatment in an atmosphere of an inert gas such as nitrogen or argon in order to prevent discoloration due to oxidation of the metal coating.

Further, the metal-coated fiber body of the present invention has excellent coating strength and non-stretchability by such a heating and cooling treatment. In general, when synthetic fibers are heated to a temperature higher than the crystallization temperature, the crystal structure changes, so that heat shrinkage of 10% or more often occurs. However, the metal-coated fiber of the present invention is subjected to heat treatment to reduce the crystal structure of the fiber. Since it has been adjusted, the crystal structure is unlikely to change even when subsequently heated, and hardly causes heat shrinkage. Rather, it may have a tendency to show slight elongation.

Specifically, for example, at a temperature higher than the crystallization temperature of the fibrous body but lower than the melting temperature, a metal having an expansion / contraction ratio of ± 4% or less, preferably ± 3% or less when no load is applied. A coated fiber body can be obtained. Further, even under a heating load, for example, at the above-mentioned temperature, the expansion and contraction rate when a g load corresponding to 1/100 of the denier value of the fibrous body is applied is ± 2% or less, preferably the expansion and contraction rate is ± 1. 5
% Or less, more preferably ± 1% or less. The g load corresponding to 1/100 of the denier value of the fibrous body means, for example, that a load of 1 g is applied to a 100 denier fibrous body.

In addition, the metal-coated fiber body of the present invention can be subjected to the above-mentioned heating and cooling treatments to obtain a peel strength of 4 or more in a peel strength test based on the standard (JIS L 0849). ). By the way, the above standard test (JIS L 0849) is a test showing the fastness of dyeing of fibrous bodies and cloths, and the degree of contamination of white cloth that occurs when a white cloth is laid on a dyed cloth and rubbed a specified number of times under a predetermined load The adhesion of the dye is determined by the method. Criteria from grade 1 to grade 5 are defined in the order of higher contamination (lower adhesion), the 5th grade has the lowest degree of contamination, and therefore has the highest adhesion of dyeing. With respect to the metal-coated fiber body subjected to the heat treatment, the adhesion strength (coating strength) of the metal coating can be similarly determined based on the degree of contamination of the white cloth in the peel test. Before the heat treatment, a metal-coated fibrous body having a coating strength of 3 or less can be obtained by performing the heating and slow cooling treatment of the present invention to have a coating strength of 4 or more.

Further, according to the present invention, a metal-coated fiber having excellent conductivity can be obtained. Specifically, for example, the electrical resistance per 1 denier per 1 cm of the fibrous body is 10,000Ω / cm · denier or less, preferably 1000Ω / cm.
A conductive fiber having a denier of not more than 100 Ω / cm and preferably not more than 100 Ω / cm can be obtained. By reducing the metal coating amount, a fibrous body having an electrical resistance of 10,000 Ω / cm · denier or more can be obtained.

The metal-coated fibrous body of the present invention includes those obtained by further performing a surface treatment on the surface of the corrosion-resistant metal coating. As the surface treatment, rust prevention treatment with paraffin or wax or oil treatment (oiling) can be performed. The rust prevention treatment can prevent a decrease in whiteness over time and a decrease in adhesion (peeling strength). In addition, the lubricity of the fibrous body surface is improved by performing the oil treatment. This oil treatment improves the slip when the fibrous body is processed by a weaving machine or a knitting machine, and thus also protects the adhesion of the metal coating. When the metal-coated fiber body is actually used, it is subjected to physical forces such as friction, shearing force, bending, and the like, and the strength and frequency of the metal-coated fiber body cause peeling or missing of the metal coating. The degree is directly based on the adhesion strength between the metal coating and the fibrous body, but the above-mentioned surface treatment buffers friction and shearing force, and as a result, prevents the metal coating from peeling off. Further, since the metal surface is generally partially oxidized and has a hydroxyl group, it is preferable to prevent oxidation and prevent rust by surface treatment. The amount of the surface treatment agent used depends on the type of metal, heating and cooling conditions, etc., but is generally 0.1 to 20 wt%.
Is valid.

The metal-coated fiber of the present invention can be used as various kinds of yarns such as short fibers and long fibers, or spun yarns and processed yarns. In addition to using the metal-coated fiber alone, it can be used as a synthetic fiber, a natural fiber, or a mixed fiber obtained by blending a mixed fiber of a synthetic fiber and a natural fiber. The content of the metal-coated fibrous body in this mixed fiber depends on the application, but is usually 0.1 to 50% or more. Depending on the amount of mixing, the electric resistance per denier per 1 cm of the mixed fibrous body is determined. Can be obtained at 10,000Ω / cm · denier or less, preferably 1000Ω / cm · denier or less.

Further, the metal-coated fibrous body of the present invention can be used as a fabric material such as a woven fabric or a non-woven fabric or a knitted fabric material. In this case, those using silver, tin, nickel or the like have high whiteness and therefore have excellent coloring properties when dyed, and are suitable for textiles and clothing fabrics. Further, those coated with silver or the like can be used as antibacterial fibers and antibacterial clothing. Specific applications include antibacterial socks, underwear, outerwear, lab coats, bedding, sheets, napkins, gloves, shirts, pants, carpets, mats,
Alternatively, work clothes and the like can be mentioned.

The metal-coated fibrous body of the present invention is not limited to a fabric material or the like, but uses its conductivity to shield electromagnetic waves,
Antistatic materials such as dust-free clothes, gloves, shoes, covers, work clothes,
Alternatively, it can be used as an alternative material for reducing the weight of electrodes and electric wires. Further, it can be used as a composite conductive material by surface coating of a conductive organic material, a conductive reinforcing material of a fibrous body reinforced plastic, or the like.

[Production method] The metal-coated fiber of the present invention
It can be obtained by providing a metal coating on the surface of a fibrous body (yarn) such as the organic fibrous body by electrolytic plating or chemical plating, heat-treating in the above temperature range, and cooling. When the metal coating is provided, the surface of the fibrous body is etched in advance with an alkali or the like, and if the surface is roughened, the plating metal to be coated enters the rough surface of the fibrous body surface and exerts an anchor effect. preferable.

When providing a metal coating on a fibrous body (yarn), FIG.
And a manufacturing (plating) apparatus shown in FIG.
As shown in the drawing, this manufacturing apparatus includes a plating tank 10, a plating liquid storage tank 20, liquid supply pipes 31 and 32 communicating the plating tank 10 with the storage tank 20, and a liquid supply pump 40 interposed between the liquid supply pipes. The upper surface of the plating tank 10 is closed by a lid 13. Inside the plating tank 10, a fixed shaft 11 for mounting a wound body 50 in which the original yarn is wound into a cheese is provided. The fixed shaft 11 is formed of a hollow tube material, and has a number of liquid passage holes 12 provided in the tube wall. The fixed shaft 11 is provided upright at the bottom of the plating tank 10, and the top is closed by a stopper 16. The fixed shaft 11 is detachably attached to the tank bottom so that the wound body 50 can be easily mounted, and even if the diameter of the winding core 51 of the wound body 50 is different. A liquid supply pipe 31 for supplying liquid is connected to the fixed shaft 11.
The storage tank 2 is supplied by the liquid supply pump 40 through the liquid supply pipe 31.
From 0, the plating solution is sent to the fixed shaft 11, and the plating solution is supplied into the tank from a number of liquid passage holes 12 provided in the tube wall of the fixed shaft 11. Further, on the upper and lower sides of the plating tank 11, liquid sending pipes 32 for draining to the respective storage tanks 20 are connected, and these liquid sending pipes 31 and 32 form a circulation path of the plating solution. ing. An opening / closing valve 33 is provided at an appropriate position on the liquid sending pipes 31 and 32.

On the other hand, the original yarn has a wound body 50 wound in a cheese winding state on a water-permeable hollow core 51. The fixed shaft 11 is wound so that the fixed shaft 11 passes through the core 51. Thread 5
0 is inserted into the fixed shaft 11 and attached to the plating tank 11. The winding body 50 can be mounted in upper and lower stages as required. A fixed plate 14 is provided on the head of the fixed shaft 11 on which the wound body 50 is mounted. The fixed plate 14 is screwed into the shaft head of the fixed shaft 11 to press the wound body 50 up and down. The gap between the fixing plate 14 and the wound body is eliminated to prevent the plating solution from leaking from these gaps. Further, spacers 15 are interposed between the upper and lower winding bodies 50 and between the lower winding body 50 and the bottom of the plating tank to prevent liquid leakage from these portions.

In the above-described apparatus configuration, the winding body 50 is inserted into the fixed shaft 11 of the plating tank 10 and is mounted thereon.
The plating solution is passed through the fixed shaft 11 through the shaft. The plating solution flows from the fixed shaft 11 toward the winding body 50 through the liquid passage hole 12, passes through the water-permeable core 51, penetrates into the winding body, and passes through the winding body to the plating tank 10. A flowing liquid stream is formed. Electroless plating is performed under this liquid flow. The plating liquid is circulated so that the amount of the liquid flowing out of the plating tank 10 and the amount of the liquid supplied to the plating tank coincide. Specifically, for example, a wound thread body 50 in which a polyester long fiber body or the like is wound into a cheese is charged into the plating tank 10, and a degreaser is circulated to degrease the fiber body surface, followed by washing with water, The etching process is performed through the liquid, and the substrate is washed with water. Next, after a neutralization treatment with a solution of concentrated hydrochloric acid or sulfuric acid, activation treatment is performed with one or a mixture of two tin-based or palladium-based solutions. Thereafter, electroless plating is performed using a plating solution such as silver, and after plating, the substrate is washed with water.
In addition, you may process with a stannous chloride solution etc. instead of an alkali process.

According to such a manufacturing apparatus or method, the plating solution is supplied from the inside of the wound body through the fixed shaft and flows toward the outside of the wound body, so that the gap between the fiber bodies is formed by the plating solution. Since the plating solution is spread outward and the plating solution penetrates into the details between the fiber bodies, the metal plating is uniformly formed on the surface of the fiber body even in a cheese wound state.

After the metal coating (plating), the fibrous body is dried and subjected to a heating and cooling treatment in the above temperature range. This heat treatment may be performed by introducing pressurized steam into the plating tank. Alternatively, the wound body may be taken out of the plating tank, transferred to an electric furnace or the like, and subjected to heat treatment. Note that the heat treatment atmosphere may be air, but it is preferable to perform the heat treatment in an inert atmosphere such as nitrogen or argon in order to prevent discoloration due to oxidation of the metal coating.

[0032]

EXAMPLES The present invention will be specifically described below with reference to examples.

[Embodiment 1] Using the illustrated plating apparatus,
A fibrous body (150 denier) made of a polymer material shown in Table 1 was wound around a winding shaft to form a wound thread body, which was put into a plating tank, and the following (a) degreasing treatment, (b) alkali treatment After performing the neutralization treatment and the (c) activation treatment, (d) electroless plating is performed on the first layer metal (conductive metal coating) shown in Table 1, and (e) the surface of the first layer metal A second layer metal (corrosion resistant metal coating) was laminated by electroless plating. (F) Next, the fibrous body was subjected to a heat treatment in a temperature range not lower than the crystallization temperature and lower than the melting temperature. Each treatment was carried out by circulating a chemical under pressure.

(A) Degreasing treatment: A 5 wt% solution of a degreasing solution (A-screen A-220: product of Okuno Pharmaceutical Co., Ltd.) was placed in a plating tank at 55 ° C.
After circulating for a minute, it was thoroughly washed with ion-exchanged water. (B) Alkali treatment: After degreasing, a 20 wt% sodium hydroxide solution is circulated through a plating tank at 70 ° C. for 20 minutes, and further thoroughly washed with ion-exchanged water, and then a 5 wt% concentrated hydrochloric acid solution is added to the plating tank at room temperature for 2 minutes. Circulated. (C) Activation treatment: After alkali treatment, a concentrated hydrochloric acid solution and a mixed solution of palladium chloride (Catalyst C: product of Koshino Pharmaceutical Co., Ltd.) were circulated in a plating tank at room temperature for 3 minutes, and then sufficiently washed with ion-exchanged water. . Further, a 10 wt% sulfuric acid solution was circulated in the plating tank at 45 ° C. for 3 minutes to activate. (D) Plating step: After the catalyst was attached to the surface of the fibrous body by the above pretreatment, the plating solution for gold, silver and nickel shown in Table 1 was circulated through the plating tank to form a metal coating. (E) Heat treatment: The metal-coated fiber body was charged into an electric furnace, and Table 1
Heating / cooling treatment was carried out under the temperature conditions shown in FIG.

With respect to these metal-coated fibrous bodies, the adhesion (peeling) strength of the coating was measured. The results are shown in Table 1. Table 1 shows the same test results as those of the comparative examples without heat treatment after metal coating. This adhesion strength is a standard test (JIS L 0849) showing the color fastness of textiles and fabrics.
It measured based on the peel strength test according to. The strength was evaluated in accordance with the criteria from grade 1 to grade 5 in ascending order of adhesion. In addition, the conductivity was measured. Conductivity of fibrous body is 10
After repeated friction, the electric resistance between the central portions of the fibrous body 10 cm was measured, and the resistance per 1 denier (Ω / cm · denier) was determined for 1 cm of the fibrous body. The results are shown in Table 1.
The fibrous body of the present embodiment is 15 denier,
The thickness of the fibrous body is not limited to this.

Further, the whiteness of these metal-coated fiber bodies was measured. The results are shown in Table 1 together with the overall evaluation. Further, a chlorine bleaching test was performed to examine the presence or absence of corrosion. The chlorine bleaching test was performed with a chlorine aqueous solution (trade name: Hiter 50%
(Aqueous solution containing water) was immersed in 100 cc of the silver-coated fiber of the sample at room temperature for 10 minutes, and the generated bubbles were observed. Table 1 shows the results.

Example 2 A metal-coated fibrous body was manufactured in the same manner as in Example 1, except that the plating method for the metal coating was changed to electrolytic plating. Example 1 of this metal-coated fiber body
The same test was performed. The results are shown in Table 2.

Example 3 A metal-coated fibrous body was manufactured in the same manner as in Example 1, except that the plating method of the metal coating was changed to the formation of the coating by the sol-gel method. The same test as in Example 1 was performed on this metal-coated fiber body. Table 3 shows the results.
It was shown to.

As shown in Tables 1 to 3, all of the metal-coated fibers belonging to the preferred range of the present invention have excellent corrosion resistance to chlorine corrosion, and have low electric resistance and excellent conductivity. have. Further, the coating strength is high, and whiteness is high in silver or nickel coating.

[0040]

[Table 1]

[0041]

[Table 2]

[0042]

[Table 3]

[0043]

The metal-coated fiber of the present invention has excellent corrosion resistance and high coating strength. Specifically, it has excellent chlorine corrosiveness in a chlorine bleaching test. Further, it can have a reference strength of 4 or higher in a peel strength test of the coating. In addition, it has a small expansion and contraction ratio even under heating, and has excellent durability against external force. Therefore, the metal-coated fibrous body of the present invention can be used in a field which has not been conventionally applicable due to insufficient adhesion and durability of the metal coating.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing an outline of a plating apparatus.

FIG. 2 is an explanatory view showing a wound state of a wound body.

[Explanation of symbols]

10-plating tank, 11-fixed shaft, 12-through hole, 13-
Lid, 14-fixing plate, 15-spacer, 16-plug, 20-
Storage tanks, 31, 32-liquid feed pipe, 33-on-off valve, 40-liquid feed pump, 50-thread, 51-water-permeable core.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yusuke Maeda 3-6-1, Ibarjima, Akita-shi, Akita F-term in Jemco No.1 Plant (Reference) 4L031 AA17 AA18 AA20 BA04 CB11 CB12 DA00 DA15 5G307 AA08 BA04 BB09 BC01 BC02 BC03 BC06 BC07 BC09 BC10

Claims (8)

[Claims] 1. A metal-coated fibrous body characterized in that a conductive metal coating and a corrosion-resistant metal coating are laminated on the surface of the fibrous body. 2. The metal-coated fibrous body according to claim 1, wherein a conductive metal coating and / or a corrosion-resistant metal coating are formed in each of a plurality of layers. 3. The method according to claim 1, wherein after applying at least one of the conductive metal coating and the corrosion-resistant metal coating, the fibrous body is heat-treated at a temperature higher than a crystallization temperature and lower than a melting temperature. Or the metal-coated fibrous body according to any of 2. 4. The conductive metal is silver, copper, nickel, tin,
At least one of zinc or a mixture or alloy thereof
And wherein the corrosion-resistant metal is at least one of gold, platinum, palladium, osmium and rhodium.
Or the metal-coated fibrous body according to any one of 3. 5. The metal-coated fiber according to claim 1, wherein the metal coating has an orange peel. 6. The corrosion-resistant metal coating has a thickness of 1 nm to 500 nm.
The metal-coated fibrous body according to any one of claims 1 to 5, which has a nm. 7. The metal-coated fiber according to claim 1, wherein a paraffin layer and a wax layer are provided on the surface of the corrosion-resistant metal coating. 8. The fiber according to claim 1, wherein the fibrous body is a single fibrous body of a synthetic fibrous body such as a polyester fibrous body, a nylon fibrous body or an acrylic fibrous body, or a composite fibrous body comprising two or more of these components. Or a metal-coated fibrous body.