JPH037182A - Ski board - Google Patents

Abstract

PURPOSE:To provide a ski board having a high strength, high resilience, and high repulsive force by using a reinforcing fiber consisting of piano wire or stainless steel wire, and forming a Ni plating covering layer over the external surface. CONSTITUTION:Reinforcing sheets 3, 3 are adhered to the oversurface and undersurface of a core 2 consisting of veneers or plywood, and a sliding face plate 4 and a decoration plate 5 are adhered to the undersurface and oversurface of each reinforcing sheet 3, respectively, and side plates 6, 6 are adhered to the left and right sides of the core 2. Thus a ski board 1 is accomplished. In each reinforcing sheet 3, a plurality of multifold yarns 10 are arranged in parallel with one another and consolidated by resin 11. Each multifold yarn 10 consists of a plurality of reinforcing fibers 9 in a bundle made of piano wire, stainless steel wire, or amorphous wire and has undergone a sizing process, and the outer surface thereof is covered with a resin layer 10a. Further a Ni plating covering layer 12 is formed over the outer surface of each fiber 9. This will, together with generation of the processing strain, enhance the tight contact and adhesion with resin to a great extent.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a ski made by laminating a reinforcing sheet material made by integrating reinforcing fibers with a resin to a core material, and particularly relates to a ski board having a tensile strength and a modulus of elasticity of 1. In addition to maintaining a reinforcing fiber that satisfies all of the required properties such as strength, elongation, and toughness, the reinforcing fiber and resin are integrated with each other by improving adhesion and adhesion. This invention relates to a structure that reliably prevents the material from slipping out of the resin.

[Conventional technology]

In general, skis used for sliding competitions have high strength,
High properties such as high elasticity and high repulsive force are required. In order to meet this demand, skis have been proposed in which a reinforcing sheet material made by integrating M-strength fiber and resin is bonded to a core material (for example,
(See Publication No. 2699, Publication No. 11665 of 1982)
.

The performance of such skis depends on the characteristics of the reinforcing fibers that make up the reinforcing sheet material, so various kinds of reinforcing fibers have been proposed. Glass fiber was commonly used, but it was pointed out that it was unsatisfactory for advanced skiers due to its low elastic modulus and inferior repulsive force during skiing.Therefore, carbon fiber and alumina were used. Ceramic fiber, Amirad fiber, silicon carbide fiber.

Poron fibers, polyethylene fibers, amorphous wires, piano wires, stainless steel wires, and other metal wires are used.

[Problem that the invention attempts to solve]

By the way, the metal wire such as the piano wire can satisfy the characteristics such as strength, elasticity, and toughness required of the reinforcing fiber itself to some extent, but it has some drawbacks in adhesion to resin. That is, since the above-mentioned reinforcing sheet material has a structure in which reinforcing fibers such as metal wires are integrated with resin, in order to effectively utilize the various high properties developed by the reinforcing fibers themselves, it is necessary to It is necessary that the fibers are in close contact with the resin that makes them into a sheet. However, when bending or torsion stress is applied during sliding, the adhesion between the gold rIA&ll and the resin deteriorates.
Depending on the adhesiveness, the metal wire may come off from the resin. Therefore, there is a need to improve the adhesion between reinforcing fibers such as metal wires and resins.

The object of the present invention is to improve the adhesion between reinforcing fibers and resin.

The object of the present invention is to provide a ski that can reliably prevent slippage by greatly improving adhesiveness and, as a result, has high strength, high elasticity, and high repulsive force.

Means for Solving Problem C] The invention of Paragraph 1 of the present application provides a reinforcing sheet material in which reinforcing fibers are arranged parallel to each other and in a planar shape and are integrated with resin. In a ski that is laminated on the surface so that the longitudinal direction of the cough core material and the longitudinal direction of the reinforcing fibers are substantially parallel, the reinforcing fibers are made of piano wire or stainless steel wire, and the outer surface is coated with Nl. It is characterized by the formation of a plating coating layer. Further, the invention in item 2 of the present application is characterized in that the Ni plating coating layer is subjected to processing strain by plastic working, and the invention in item 3 is characterized in that the reinforcing fibers are made of a plurality of piano wires or stainless steel wires. It is characterized by being subjected to a sizing process.

Hereinafter, the reason for adopting the above configuration in the present invention will be explained in detail.

1. Reason for forming the N1 plating coating layer on the outer surface of the reinforcing fibers The purpose of forming the N1 plating coating layer is not only to provide normal properties such as corrosion resistance, but also to particularly improve adhesion and adhesion with resin. This is to do so. That is, the experimental research conducted by the present inventors has revealed that the N-hole compatibility with the resin is very good compared to other coating metals, and the adhesion with the resin can be improved.

Table 2 shows a comparison of the properties of the coated metals.

It is clear from Table 2 that Nl is superior overall, and especially for improving adhesion and adhesion. Therefore, when reinforcing fibers coated with Nl are made into a sheet with resin, when bending or torsion is applied to the ski,
It is possible to reliably prevent reinforcing fibers from coming off from the resin. Further, since the reinforcing fiber is made of sea bream, it will oxidize as it is, which will cause a fatal problem, but by applying Nl plating, the corrosion resistance can be improved. In addition, as the method for coating with Nl, commonly used means such as electroplating, wet plating methods such as hot-dip plating, and dry plating methods such as PCO, CVO, and sputtering can be employed. Of course,
The Ni plating referred to herein is not limited to pure Nl, but may be alloyed with those listed in Table 2 or with other metals within a range that does not impede the required properties.

Also, regarding the amount of metal coating on the ultra-fine wire, the amount of metal coating on the ultra-fine wire is
If it is less than 1g per kg of wire, it is difficult to achieve coating effects such as rust prevention, and if it exceeds 100g, no improvement in the coating effect can be expected, and on the contrary, the thick weight may cause secondary effects such as powdering during processing. Therefore, it is appropriate to use 1 to 100 g per 1 kg of ultrafine wire.

■Reason for imparting processing strain to the Nl plating coating layer by plastic working When the inventors of the present invention further investigated the above Nl plating coating layer, they found that the adhesion and adhesion were sufficiently satisfactory when the Nl coating layer was simply plated. It turns out that there are cases where it is not possible to obtain The reason for this is not clear, but the following points can be made. In other words, the Nl plating coating layer that has just been plated has a porous shape with countless pinholes, and therefore hydrogen generated during the plating process is stored in the Ni layer, or is trapped inside the porous layer. Air will remain in the area. This occluded hydrogen and residual air are released or expanded by the heat generated during resin coating and accumulate at the boundary between the resin layer and the N1 coating layer, resulting in a negative impact on the adhesion between the two. considered to be a thing.

On the other hand, when processing strain is applied to the N1 plating coating layer, the pinholes in the Mff layer are crushed and disappear, and the hydrogen and residual air are released due to processing heat during wire drawing. N1 containing almost no residual air
A plated coating layer will be obtained. As a result, when the reinforcing fibers and the resin are integrated, the adhesion and adhesion between the resin and the reinforcing fibers can be further improved. In addition, the above-mentioned processing strain can be formed by, for example, performing Nl plating treatment on the strands before cold wire drawing, and then wire-drawing the strands in the manufacturing process of the reinforcing fibers.

In order to satisfy the above-mentioned strength required for skis, M, 1 strength fibers are made by combining multiple pieces of piano wire, etc. and sizing them. This is because it is preferable to use . Further, when a large number of m-wires are to be combined, it is effective to perform a sizing treatment to improve the convergence, and this treatment can further improve the adhesive force with the resin.

[Effect]

According to the ski of the invention as set forth in item 1 of the present application, since the Nl plating coating layer is formed on the outer surface of the reinforcing fibers, the adhesion and adhesion between the reinforcing fibers and the resin can be improved, and stress during skiing can be improved. As a result, the tensile strength of the ski as a whole can be increased, and its life can be further extended.

In addition, in the invention of item 2 of the present application, since processing distortion is formed in the N1 plating coating layer, hydrogen and residual air do not accumulate between the coating layer and the resin layer, and in this case, the close contact with the resin is prevented. The properties and adhesion can be further improved.

Furthermore, according to the invention of item 3 of the present application, since a plurality of piano wires etc. are sized together, it is possible to improve the convergence and also improve the adhesion to the resin.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 to 3 are diagrams for explaining a ski according to an embodiment of the present invention.

In the figure, l is the ski of this embodiment, and this is made by bonding thin reinforcing sheet materials 3, 3 to the upper and lower front surfaces of a core material 2 made of veneer or plywood. Glue the sliding face plate 4 on the lower surface and the decorative plate 5 on the upper surface, and
It is constructed by attaching side plates 6.6 to the left and right side surfaces of the core material 2. Furthermore, steel edges 7 are attached to the left and right edges of the sliding face plate 4, and trim edges 8 are attached to the left and right edges of the lower surface of the decorative board 5.

The reinforcing sheet material 3 is made by arranging a plurality of doubling yarns 1O parallel to each other at predetermined intervals and forming a plane, and integrating them with resin 11,
The longitudinal direction of the doubling yarn 10 is arranged so as to be substantially parallel to the longitudinal direction of the core material 2. Further, the doubling yarn 10 is piano wire.

A plurality of reinforcing fibers 9 made of stainless steel wire or amorphous wire are bundled and subjected to sizing treatment, and the outer surface of the reinforcing fiber 9 is coated with a resin layer 10a.

Further, an Nl plating coating layer 12 is formed on the outer surface of each reinforcing fiber 9 in this example. This Nl plating coating layer 12 is plastically worked when the wire rod is plated and then subjected to cold wire drawing, and therefore has a working strain. That is, the N1 plating coating layer 12 is obtained by plating the wire rod in the pre-wire drawing process to form a coating layer of about 4 μm, and then performing secondary cold drawing to form a coating layer of about 1 μm. It is made by stretching it to a thickness of - As a result, pinholes generated during the plating process are crushed during the wire drawing process, resulting in a good coating layer with no defects.

In this way, according to the ski material 1 of this example, the N1 plating coating layer 12 is formed on the reinforcing fibers 9, and processing strain is caused therein, so that the adhesion and adhesion with the resin are significantly improved. You can improve. In other words, the Nl plating coating layer 12 has a structure free of pinholes etc. due to processing distortion, and contains almost no hydrogen or PU air, so there is no adverse effect on adhesion due to hydrogen etc. As mentioned above, the adhesion can be improved, and it will not come off even when stress such as bending or torsion is applied during skiing.As a result, the tensile strength of the entire ski can be improved and its life can be extended.

Furthermore, in this example, since the plurality of reinforcing fibers 9 were subjected to sizing treatment and coated with the resin 10a,
It can improve the convergence, and also has 10 doubling threads and tree J! (1) and when forming the reinforcing sheet material 3 by integrating the reinforcing sheet material 3, the adhesive force between the two can be further improved.

In addition, in the above embodiment, processing distortion was formed in the Nl plating coating layer 12, but in the present invention, this processing distortion does not necessarily have to be formed, and even when there is no processing distortion, the adhesion with the resin is improved compared to the conventional one. can be improved.

Here, the N1 plating coating layer 1 is applied to the reinforcing fiber 9 of this example.
An experiment to confirm the effect of improving adhesive strength with resin by forming No. 2 will be explained.

In this experiment, as shown in Fig. 4, a part of the reinforcing fiber a of this example was embedded in a composite sample piece made of an epoxy resin base mixed with carbon fiber and glass fiber. With the composite sample piece fixed, the above fiber a
Pull the top of the wire 9 until it comes off or breaks,
The adhesion and adhesion of both were investigated. The embedding length of the composite sample piece was set to be the wire diameter d(n)X50 of the fiber a.

As shown in the figure, four reinforcing fibers with a diameter of 50 μm are used, and when N1 plating is not formed on each fiber (ml), processing strain is reduced by wire drawing after forming an Nl plating coating layer. A pullout test was conducted for the case where the surface was coated with a resin (m2), the case where the surface was further coated with a resin (ffi3), and the case where the surface was only coated with Nl plating (case 4). In addition, &I diameter 1008-knit steel wire is also used, which is also N
In Table 6, the same pullout test was conducted for the case where the i-plating was only coated (N15) and the case where processing strain was applied by wire drawing (-6). The case where the fiber a has come off from the composite sample piece is shown, and the O mark shows the case where the fiber a is broken.

As is clear from the table, when the wire diameter was 50μ and no Ni plating was applied (Magnetic 1), the adhesive strength between the two was less than the breaking force of the fiber a.

On the other hand, it is recommended to coat Nl plating (m4) and add processing distortion to it! 1h2), and when this was further coated with a resin (Arashi 3), the wires broke before they came off, indicating that the adhesive strength between the two was greater than the breaking force of the reinforcing fibers.

On the other hand, in the case where only the N1 plating layer was formed with &I diameter of 100 μ- (hidden 5), the wire was removed before the wire was broken. This is probably because the adhesive force was not as strong as this high tensile force because the wire diameter was large and the tension was also high. However, when machining strain is applied to this (6), the wire breaks,
This allows us to understand that the adhesive strength is improved by processing strain, and since the tensile force of the reinforcing fiber itself is large when the wire diameter is relatively thick, applying processing strain can reduce this large tensile force. It can be seen that a corresponding adhesive force was obtained and the effect was even greater.

〔Effect of the invention〕

As described above, according to the ski according to the present invention, since the N1 plating coating layer is formed on the surface of the reinforcing fiber made of piano wire or stainless steel wire, the adhesion between the reinforcing fiber and the resin is significantly improved. This has the effect of preventing the ski from coming off due to external bending and torsion forces, and improving the overall strength of the ski. In addition, in the second aspect of the invention, processing distortion is formed in the N1 plating coating layer, which has the effect of further improving the adhesion with the resin. The treatment has the effect of improving convergence and adhesive strength.

[Brief explanation of the drawing]

1 to 3 are diagrams for explaining a ski according to an embodiment of the present invention, and FIG. 1 is a cross-sectional perspective view of
Fig. 2 is a partial cross-sectional perspective view showing the reinforcing sorting material, Fig. 3 is a cross-sectional view of the reinforcing fibers which have been doubled, and Fig. 4 is for confirming the effects of this example. It is a figure showing the experimental method carried out. In the figure, 1 is a ski, 2 is a core material, 3 is a reinforcing sheet material, 9 is a reinforcing fiber, 11 is a resin, and 12 is a Ni plating coating layer.

Claims (3)

[Claims] (1) A reinforcing sheet material made of reinforcing fibers arranged parallel to each other and in a planar shape and integrated with resin is placed on the surface of the core material in the longitudinal direction of the core material and in the direction of the reinforcing fibers. A ski that is bonded so that the longitudinal direction is substantially parallel to the ski, characterized in that the reinforcing fibers are made of piano wire or stainless steel wire, and a Ni plating coating layer is formed on the outer surface. Board. (2) The ski according to claim 1, wherein the Ni plating coating layer has processing strain due to plastic working. (3) The ski according to claim 1 or 2, wherein the reinforcing fibers are formed by sizing a plurality of piano wires or stainless steel wires.