JPH0568727A - Ski strip - Google Patents

Abstract

PURPOSE:To provide a ski strip which has much improved in toughness and is hardly snapped and if snapped, is not separated at the snapped part but still connected and is safe and further is excellent in feeling of ski and in apperance. CONSTITUTION:A ski strip 100 is formed by sticking a slender plate-form core member 102 formed of a plywood or urethane, and hardened fiber-reinforced resin layers 104 (104a, 104m, and 104b) provided by laminating on the upper and the lower sides of the core member 102, with a hardening agent and the like, into a formation having an almost rectangular section. And at least one layer 104m of the fiber-reinforced layers 104 is made into a fiber-reinforced prepreg layer which is formed of a fiber-reinforced prepreg 1 including a metallic fiber and a different fiber other than a metallic fiber as the reinforcement fiber.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ski, in which fiber-reinforced resin layers are laminated in parallel on both upper and lower sides of a plate-shaped core material, and in particular, at least one fiber-reinforced resin layer is provided. The present invention relates to a ski, which is a fiber-reinforced prepreg layer having metal fibers and different kinds of fibers other than metal fibers as reinforcing fibers.

[0002]

2. Description of the Related Art In recent years, skis made of, for example, fiber-reinforced composite resin products using glass fibers as reinforcing fibers have been widely used because of their light weight and high mechanical strength. And has achieved good results.

FIG. 3 schematically shows a sectional structure of a ski 100 '. Briefly, the ski 100 'is
An elongated plate-shaped core material 102 made of wood plywood or urethane, and cured fiber reinforced resin layers 104 (104a, 104b) arranged on both upper and lower sides of the core material 102.
And 104c) are bonded together with an adhesive or the like, and molded to have a substantially rectangular cross section. Also, ski 10
The upper surface and the side surface of 0'are respectively covered with a surface material 106 and a side material 108 made of a thermoplastic resin such as ABS or nylon. Further, the lower surface of the ski, that is, the sliding surface is made of a thermoplastic resin such as polyethylene. Become surface material 11
It is covered with 0. Metal top edges 112 and edges 114 are fixed to upper and lower edge corners along the longitudinal direction of the ski, respectively.

Usually, the fiber-reinforced resin layer 104 is produced by laminating a plurality of fiber-reinforced prepregs using glass fiber cloth (woven fabric) as reinforcing fibers and curing the layers.

[0005]

The ski 100 'having such a structure has the features of being lightweight and having high mechanical strength as described above, but in addition, in order to prevent breakage, It is desired to improve the toughness so that the broken parts can be connected without being separated even if they are broken. Furthermore, the appearance is required to be fashionable, and improvement from the aesthetic viewpoint is also desired.

As a result of many researches conducted by the present inventors, the fiber reinforced having metal fibers such as titanium fiber, stainless fiber, and tungsten fiber as reinforcing fibers and dissimilar fibers such as carbon fibers other than metal fibers. It has been found that the above demand can be met by providing the fiber reinforced prepreg layer formed by the prepreg as a part of the fiber reinforced resin layer of the conventional ski having the above structure.

The present invention has been made based on such a new finding.

Therefore, an object of the present invention is toughness is greatly improved, it is hard to break, and even if it is broken, the broken parts are connected without separation, it is safe, and further, the feeling of downhill and the aesthetic appearance are improved. The point is to provide skis that are also excellent.

[0009]

The above object is achieved by a ski according to the present invention. In summary, the present invention relates to a ski, in which fiber-reinforced resin layers are laminated in parallel on the upper and lower sides of a plate-shaped core member, and at least one of the fiber-reinforced resin layers is a metal fiber as a reinforcing fiber. A ski having a fiber-reinforced prepreg layer containing different kinds of fibers other than metal fibers. Preferably, the surface of the metal fiber is subjected to a phosphate treatment or a chromate treatment.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a ski according to the present invention will be described in more detail with reference to the drawings.

As shown in FIG. 1, a ski 100 according to the present invention has an elongated plate-shaped core member 1 made of wood plywood or urethane, as in the conventional ski 100 '.
02 and the cured fiber-reinforced resin layer 104 laminated and arranged on both upper and lower sides of the core material 102 are bonded together with an adhesive or the like, and molded to have a substantially rectangular cross section. The upper surface and both side surfaces of the ski 100 are covered with a surface material 106 and side materials 108 made of a thermoplastic resin such as ABS or nylon, and the lower surface of the ski, that is, the sliding surface is made of a thermoplastic material such as polyethylene. It is covered with a surface material 110 made of resin. Metal top edges 112 and edges 114 are fixed to the upper and lower edge corners along the longitudinal direction of the ski, respectively.

In some cases, the ski 200 has a core member 102, a prepreg for forming a fiber reinforced resin layer 104, surface members 106 and 110, and side members 108.
It is also possible to produce by so-called "integral curing molding" in which the layers are laminated and then cured.

According to the present invention, the fiber reinforced resin layers 104 provided on both sides of the core material 102 are a plurality of layers, and in FIG. 1, the fiber reinforced resin layer 10 is three layers for easy understanding.
4a, 104m, and 104b, at least one layer, in this embodiment, the fiber-reinforced resin layer 104m is formed of a fiber-reinforced prepreg having at least metal fibers as reinforcing fibers, which will be described in detail later. Fiber reinforced prepreg layer.

Other fiber reinforced resin layers 104a, 104b
Is produced by curing a fiber reinforced prepreg using a glass fiber cloth (woven fabric) as a reinforcing fiber or a fiber reinforced prepreg using another reinforcing fiber as in the conventional case. Each of these fiber reinforced resin layers 104a, 1
The reinforcing fibers of 04b can all be the same or different fibers can be used.

In FIG. 1, the fiber reinforced resin layer 104m, that is, the fiber reinforced prepreg layer is the other fiber reinforced resin layer 104.
Although one layer is formed between a and 104b, a plurality of layers may be formed, and when a plurality of other fiber reinforced resin layers are laminated, one layer or a plurality of layers may be formed at any position. It can be arranged in layers. Further, if necessary, the surface material 10
It can also be located adjacent to 6 or 110, ie in the outermost layer.

Further, the other fiber-reinforced resin layer 104a,
As the matrix resin of the prepreg forming 104b, a thermosetting matrix resin such as an epoxy resin, an unsaturated polyester resin, a polyurethane resin, a diallyl phthalate resin or a phenol resin can be used. Further, a curing agent and other imparting agents such as a flexibility imparting agent are appropriately added so that the curing temperature of the prepreg becomes 50 to 200 ° C.

If the ski 100 is manufactured by integrally curing the various prepregs, the surface material and the side material, the thermoplastic resin such as the surface material and the side material is prevented from being melted at the time of curing. Therefore, a low temperature curable resin such as a combination of an unsaturated polyester, a vinyl ester and an epoxy resin with a low temperature curable curing agent is used so that the curing temperature of the prepreg is 80 to 100 ° C. The agent or the like is appropriately selected.

Next, the fiber-reinforced prepreg layer 104m, which is a feature of the present invention, will be described in more detail. 4 and 5 show an embodiment of the fiber reinforced prepreg 1 used for forming the fiber reinforced prepreg layer 104m according to the present invention.

FIG. 4 is a sectional view showing an embodiment of the fiber reinforced prepreg 1 which is a feature of the present invention. In this embodiment, the fiber reinforced prepreg 1 is configured to have reinforcing fibers impregnated with the matrix resin 2. According to the invention, the metal fibers 4 and the dissimilar fibers 6 other than the metal fibers are used as the reinforcing fibers.

As the metal fiber 4, one kind or plural kinds selected from titanium fiber, amorphous fiber, steel fiber, stainless fiber, tungsten fiber, aluminum fiber and the like are used. The metal fiber 4 is 5 to 150.
Various fiber diameters of μm can be used.

The different fibers 6 are selected from inorganic fibers such as carbon fibers, glass fibers, alumina fibers, silicon carbide fibers and silicon nitride fibers, and organic fibers such as aramid fibers, polyarylate fibers and polyethylene fibers. 1
Seed or multiple species. The different fibers 6 may have various fiber diameters of 5 to 30 μm.

As the matrix resin 2, a thermosetting matrix resin such as epoxy resin, unsaturated polyester resin, polyurethane resin, diallyl phthalate resin or phenol resin can be used. Further, a curing agent and other imparting agents such as flexibility imparting agent are appropriately added so that the curing temperature is 50 to 200 ° C.

As a preferred example, an epoxy resin is preferable as the matrix resin 2, and usable epoxy resins include, for example, (1) glycidyl ether type epoxy resins (bisphenol A, F, S type epoxy resin, novolac type epoxy resin). Epoxy resin, brominated bisphenol A epoxy resin); (2) cycloaliphatic epoxy resin;
(3) Glycidyl ester-based epoxy resin; (4) Glycidylamine-based epoxy resin; (5) Heterocyclic epoxy resin; and one or more kinds selected from other various epoxy resins, particularly bisphenol A, F, S
Glycidyl amine epoxy resin is preferably used.
As the curing agent, amine curing agents such as dicyandiamide (DICY), diaminodiphenylsulfone (DDS), diaminodiphenylmethane (DDM); acid anhydrides such as hexahydrophthalic anhydride (HHP)
A), methylhexahydrophthalic anhydride (MHHPA)
Etc. are used, but amine-based curing agents are particularly preferably used.

The mixing ratio of the reinforcing fiber and the matrix resin 2 in the fiber reinforced prepreg 1 can be adjusted as desired.
In general, the weight ratio of metal fiber: different fiber: matrix resin = 1 to 30:30 to 80:20 to 70 is good, and preferably 5 to 20:40 to 75:25 to 60.
The thickness T of the fiber reinforced prepreg 1 is usually 20 to 300.
μm.

FIG. 5 shows another embodiment of the fiber reinforced prepreg 1 which characterizes the present invention. According to this embodiment, the first dissimilar fiber 6A is arranged on one side of the prepreg, and the second dissimilar fiber 6B different from the first dissimilar fiber 6A is arranged on the other side of the prepreg. This is different from the prepreg of the previous embodiment shown in FIG.

In the present embodiment, the metal fibers 4 are preferably located at the center of the fiber reinforced prepreg 1 as shown in the figure, but they are arranged on either side slightly offset from the center. Even if it does, the same effect can be exhibited.

The first and second heterogeneous fibers 6A and 6B are the same as in the previous embodiment, the inorganic fibers such as carbon fiber, glass fiber, alumina fiber, silicon carbide fiber, silicon nitride fiber, aramid fiber and polyaryle. -One kind or plural kinds selected from organic fibers such as G-fiber and polyethylene fiber. For example, as an example, the first different fiber 6A is a carbon fiber and the second different fiber 6B is a glass fiber.

The prepreg 1 having such a structure can be manufactured by various methods. To give an example, the prepreg 1 is a reinforcing fiber, for example, the first dissimilar fiber 6A is a carbon fiber, and the second
The dissimilar fiber 6B is made of glass fiber, and the metal fiber 4 is placed between the two unidirectional fiber reinforced prepregs.
It is extremely suitably manufactured by arranging the same in the same direction as A and 6B at a predetermined interval and pressing and / or heating to integrate them.

To further explain, as shown in FIG.
The first carbon fiber reinforced prepreg 1 held on the release paper 10 and having carbon fibers as the first different fibers 6A, for example.
On top of A, the metal fibers 4 arranged in the same direction as the arrangement direction of the carbon fibers 6A of the first carbon fiber reinforced prepreg 1A are arranged, and the release paper 10 is sandwiched by the metal fibers 4. A second glass fiber reinforced prepreg 1B having glass fibers as the second dissimilar fibers 6B held by the
Are overlapped with each other, and the prepregs 1A and 1B are pressed and / or heated toward each other. As a result, the first carbon fiber reinforced prepreg 1A, the metal fibers 4 and the second glass fiber reinforced prepreg 1B are integrally joined to form the fiber reinforced prepreg 1 according to the present invention as shown in FIG. ..

The compounding ratio of the metal fiber 4, the first and second heterogeneous fibers 6A, 6B: matrix resin 2 in the prepreg of the present invention can be adjusted as desired, but generally it is% by weight.
Then, metal fiber: first heterogeneous fiber: second heterogeneous fiber: matrix resin = (1 to 30): (10 to 70): (10
70): (20-70). Further, according to the present invention, the thickness (T) of the prepreg may be about the fiber diameter of the metal fiber 4 to be used, but usually 80 to
It will be about 200 μm.

Furthermore, in each of the above embodiments, preferably, the metal fibers 4 used in the fiber reinforced prepreg 1 are previously subjected to a phosphate treatment or a chromate treatment as a chemical conversion treatment.

By subjecting the metal fiber 4 to a phosphate treatment or a chromate treatment in advance, a metal salt coating is formed on the surface of the metal fiber, and the metal salt coating enhances the adhesiveness of the metal fiber 4 with the matrix resin 2. As a result, the effect of improving mechanical strength such as torsional fracture strength and impact resistance of the ski pole shaft made of the fiber reinforced prepreg 1 using the metal fibers 4 can be sufficiently exerted, and at the same time, the toughness can be improved. ..

As the phosphate treatment, either zinc phosphate treatment or manganese phosphate treatment can be used. In particular, when the metal fibers 4 are steel fibers or stainless fibers, iron phosphate-based phosphate treatment can be used in addition to the zinc phosphate-based or manganese phosphate-based treatment described above.

The treatment conditions such as the liquid composition of the phosphate treatment, pH, treatment temperature, treatment time and the like can be the usual conditions, but from the viewpoint of improving the adhesion of the metal fibers 4 to the matrix resin 2. Therefore, it may be appropriately determined according to the type of the metal fiber 4 to be used.

Specifically, the phosphate treatment is performed on the metal fiber 4
It is preferable to perform so that a metal salt coating film having a coating amount of 0.2 to 10 g / m ² is formed on the surface. In addition, the chromate treatment is performed so that a metal salt coating (chromate coating) having a coating amount of 0.01 to 0.15 g / m ² is formed on the surface of the metal fiber 4 as in the case of the phosphate treatment. It is preferable to carry out.

In the fiber reinforced prepreg 1 of the present invention, the metal fibers 4 can be arranged in one direction, but can also be used in the form of cloth (woven fabric).

Next, the present invention will be described more specifically with reference to Examples.

Example 1 A ski 100 similar to that shown in FIG. 1 was produced.

The fiber-reinforced resin layers 104a and 104b are the same, and in this embodiment, glass fibers having a fiber diameter of 13 μm (made by Asahi Fiber Glass Co., Ltd., standard name E glass) are used as the reinforcing fibers. A cloth (woven fabric) was used as the matrix resin, and the matrix resin was prepared by a prepreg using an epoxy resin. The matrix resin content was 35% by weight.

On the other hand, the fiber reinforced prepreg layer 104m is
The fiber reinforced prepreg 1 having the structure shown in FIG.
That is, in this prepreg 1, titanium fibers having a fiber diameter of 100 μm are arranged at 0.7 mm pitch as the metal fibers 4, and the different fiber 6 has a fiber diameter of 13 μm.
m glass fibers (made by Asahi Fiber Glass Co., Ltd., standard name E glass) were arranged in the same direction as the titanium fibers, and epoxy resin was used as the matrix resin 2. Further, in terms of weight%, the ratio was metal fiber: different fiber: matrix resin = 14: 56: 30.

In manufacturing the ski 100, in the present embodiment, the core material 102 has a thickness of 15 m at the center.
Using urethane having a width of 55 mm and a width of 55 mm, the prepreg for forming the fiber reinforced resin layer was laminated on both sides of the urethane core material 102 to a thickness of 1.5 mm. At this time, the fiber reinforced prepreg 1 was arranged so as to be located at a substantially intermediate position between the prepregs 104a and 104b laminated on each side of the core material 102.

Next, after the prepregs laminated on both sides of the core material 102 are cured, the ski 1 having the structure shown in FIG.
00 was manufactured and its performance was evaluated. The results at that time are shown in Table 1.

ABS resin was used as the surface materials 106, 108 and 110.

Comparative Example 1 A ski was manufactured by using the same material and method as in Example 1 except that the fiber reinforced prepreg layer 104m was not provided in Example 1.

Table 1 shows the performance evaluation of the ski of this comparative example.

Example 2 In Example 1, the fiber reinforced prepreg layer 104m was provided as the outermost layer of the fiber reinforced resin layer 104, that is, adjacent to the surface material 106, and otherwise the same as in Example 1 Was produced.

According to this embodiment, the transparent polycarbonate resin is used as the surface material 106, and the fiber reinforced prepreg layer 104m is made of the prepreg using the epoxy resin as the matrix resin 2. It was visually observable and aesthetically superior.

Table 1 shows the performance evaluation of the ski of this example.

Comparative Example 2 A ski was manufactured by the same material and method as in Example 2 except that the fiber-reinforced prepreg layer 104m was not provided in Example 2.

Table 1 shows the performance evaluation of the ski of this comparative example.

Examples 3 to 7 As the metal fibers 4 of the fiber-reinforced prepreg layer 104m, stainless fibers (Example 3), tungsten fibers (Example 4), amorphous fibers (Example 5), and chromate-treated titanium fibers (Example) Example 6) and Example 2 except that zinc phosphate treated stainless fibers (Example 7) were used.
Skis were made with the same materials and methods as above.

The chromate treatment in Example 6 is as follows.
Zinchrome R-14 made by Nippon Parker Rising Co., Ltd.
15A was used and the coating amount was 0.03 g / m ² . Further, the zinc phosphate treatment in Example 7 was carried out by using Palpond L-3080 manufactured by Nippon Parker Rising Co., Ltd.
The coating amount was 1.0 g / m ² .

According to each embodiment, the transparent polycarbonate resin is used as the surface material 106, and the fiber reinforced prepreg layer 104m is made of the prepreg using the epoxy resin as the matrix resin 2. It was visually observable and aesthetically superior.

Table 1 shows the performance evaluation of the ski of this example.

[0055]

[Table 1]

[0056]

As described above, in the ski of the present invention, at least one of the fiber reinforced resin layers disposed on both sides of the core material has metal fibers and different fibers other than the metal fibers as the reinforcing fibers. Since it is made of a fiber-reinforced prepreg layer, the toughness is greatly improved, it is difficult to break, and even if it breaks, the broken parts are connected without separation, it is safe, and moreover, the feeling of downhill and aesthetics However, it has the advantage of being excellent.

[Brief description of drawings]

1 is a cross-sectional view of the ski according to the invention taken along the line I--I of FIG.

FIG. 2 is a plan view of a ski.

FIG. 3 is a cross-sectional view of a conventional ski.

FIG. 4 is a cross-sectional configuration diagram of an embodiment of the fiber reinforced prepreg according to the present invention.

FIG. 5 is a cross-sectional configuration diagram of another embodiment of the fiber reinforced prepreg according to the present invention.

FIG. 6 is a diagram illustrating one manufacturing method for manufacturing the fiber-reinforced prepreg shown in FIG.

[Explanation of symbols]

 1 Fiber Reinforced Prepreg 2 Matrix Resin 4 Metal Fiber 6 Different Fiber 100 Ski Plate 102 Core Material 104 Fiber Reinforced Resin Layer 104m Fiber Reinforced Prepreg Layer

Claims (1)

[Claims] 1. A ski in which fiber-reinforced resin layers are arranged in parallel on both upper and lower sides of a plate-shaped core material, and at least one layer of the fiber-reinforced resin layers is a metal fiber or a metal fiber other than a metal fiber as a reinforcing fiber. A ski having a fiber-reinforced prepreg layer containing different kinds of fibers.