JPH03202323A - Hybrid prepreg and its manufacture - Google Patents

Abstract

PURPOSE:To improve the flying distance of a ball and the impact resistance of the shaft a golf club without lowering the ball-hitting feeling, while the mechanical strength of said shaft is heightened by a method in which in the carbon fiber arranged in one direction, the metallic fiber and the fiber different from said both fibers are arranged in the same direction as that of the carbon fiber, thereby producing hybrid prepreg. CONSTITUTION:As the metallic fiber 6 to be used, titanium fiber and stainless steel fiber, etc., are preferably used, and as the fiber 8 of different fiber, the inorganic fiber such as glass fiber and boron fiber, etc., or the organic fiber of various kinds may be also used. The diameter of the fiber is set at 50-150mum, but when its diameter is small, the fiber is used as the form of fiber bundle. In hybrid prepreg 1, boron fiber 6 and the fiber 8 of different kinds are arranged at a prescribed distance in the same direction as that of carbon fiber 2 between two prepregs reinforced with the carbon fiber in one direction, and are integrally formed by pressing and/or heating, thereby producing the hybrid prepreg remarkably preferably. As matrix resin, epoxy resin or other thermosetting resin may be used, and curing agent and other addition agent are suitably added thereto.

Description

DETAILED DESCRIPTION OF THE INVENTION 1. The present invention provides carbon fibers and metal fibers such as titanium fibers, amorphous fibers, and stainless steel fibers,
The present invention relates to a hybrid prepreg having as reinforcing fibers one or more types of other different fibers selected from glass fibers, other inorganic fibers, various organic fibers, etc., which are different from these fibers, and a method for producing the same.

Rainbow Rice 2 and 1 In recent years, prepregs using carbon fiber as reinforcing fibers have been widely used in various technical fields, and for example, in the manufacture of golf shafts and fishing rods, because they are lightweight and have high mechanical strength. It has been widely used and has achieved very good results.

However, in terms of strength and elastic modulus, it is also desired to improve the feel (hitting feeling) during use, especially in golf shafts. A method of using metal fibers, such as titanium fibers, which are different from the reinforcing fibers of the prepreg, as reinforcing fibers has been proposed, and research for this purpose has been actively conducted.

Currently, as a hybrid prepreg for this purpose, one having a configuration as shown in FIG. 12 has been proposed and is in use.

That is, the hybrid prepreg shown in FIG. 12 is formed by arranging metal fibers 6 different from the carbon fibers 2 at equal intervals on the prepreg 4 using the carbon fibers 2 as reinforcing fibers.

Although such a hybrid prepreg can be easily manufactured, has improved mechanical strength, and can improve the feel at impact in golf shafts, etc., however, the bonding between the prepreg 4 and the metal fiber 6 is insufficient, and in some cases In some cases, the desired mechanical strength may not be fully exhibited, which is a problem.

Furthermore, recently, especially when used in golf shafts, etc., increased flight distance, stickiness, compressive strength, impact resistance, etc. are required.

Furthermore, the diameter of the metal fibers 6 such as titanium fibers is large, and therefore, the thickness of the hybrid prepreg must also be generally large, which poses the problem that it is difficult to provide a thin hybrid prepreg. It also had

As a result of many research experiments to solve these problems, the present inventors have found that in hybrid prepregs, carbon fibers and other metal fibers such as titanium fibers, amorphous fibers, and stainless steel fibers are used as reinforcing fibers. By incorporating one or more types of different types of fibers selected from glass fibers, other inorganic fibers, various organic fibers, etc. as reinforcing fibers, the hybrid prepreg can be used for golf shafts, etc. mechanical strength, feel during use (hitting feel)
It was found that flight distance was increased, and properties such as stickiness, compressive strength, and impact resistance were improved without impairing performance.

The present invention has been made based on this new knowledge.

Therefore, an object of the present invention is to be able to improve physical properties such as tensile strength and elastic modulus compared to conventional hybrid prepregs, and particularly when used for golf shafts, mechanical strength and To provide a hybrid prepreg capable of increasing flying distance, improving stickiness, compressive strength, impact resistance, etc. without impairing feel (hitting feeling), and providing a thin prepreg, and a method for producing the same.

Furthermore, as will be explained in detail later, another object of the present invention is to provide a hybrid prepreg in which various reinforcing fibers are arranged without any disturbance in the longitudinal direction, the prepreg has good mechanical properties, and is aesthetically pleasing. An object of the present invention is to provide a manufacturing method.

The above-mentioned methods for achieving the above can be achieved by the hybrid prepreg and the method for producing the same according to the present invention. In summary, the present invention includes metal fibers and one or more types of different fibers different from the metal fibers and carbon fibers in carbon fibers arranged in one direction as reinforcing fibers. This is a hybrid prepreg characterized by being arranged in the following manner.

Such a hybrid prepreg according to the present invention has metal fibers arranged in the same direction as the carbon fibers, metal fibers and carbon fibers arranged in the same direction as the carbon fibers, and two unidirectional carbon fiber reinforced prepregs using carbon fibers as reinforcing fibers. It is suitably produced by a hybrid prepreg production method characterized by sandwiching and integrating one or more types of different fibers, and can be particularly efficiently realized using a drum winder.

In other words, the hybrid prepreg according to the present invention has (a
) A unidirectional carbon fiber reinforced prepreg using carbon fiber as reinforcing fiber is placed on the circumference of a drum with a predetermined diameter.
a step of winding the carbon fibers so that the arrangement direction of the carbon fibers is aligned in the circumferential direction of the drum; (b) on the circumferential surface of the unidirectional carbon fiber reinforced prepreg wound around the drum, metal fibers, the metal fibers and the carbon fibers; A process of winding one or more types of different fibers at a constant pitch, (c
) While wrapped around the drum or removed from the drum, further cover the surface of the unidirectional carbon fiber reinforced prepreg in which the metal fibers and different types of fibers are aligned, and use the carbon fibers as reinforcing fibers. Preferably produced by a method for producing a hybrid prepreg, which comprises the step of overlapping the other unidirectional carbon fiber reinforced prepreg used so that the arrangement direction of the carbon fibers is aligned in the circumferential direction of the drum. Ru.

Furthermore, according to another manufacturing method of the present invention, a long hybrid prepreg having the configuration according to the present invention described above can be easily manufactured.

In other words, one manufacturing method according to the present invention includes metal fibers and one or more types of different fibers different from the metal fibers and carbon fibers in carbon fibers arranged in one direction as reinforcing fibers. A method for manufacturing a long hybrid prepreg arranged in the same direction as carbon fibers, the method comprising: (a) arranging metal fibers and one or more types of different fibers different from the metal fibers and carbon fibers at predetermined intervals; (b) first and second carbon fiber-reinforced prepregs made of carbon fiber reinforced fibers, each held by a release paper in such a manner that the metal fibers and the different types of fibers are sandwiched; (c) first carbon fiber reinforced prepreg with release paper;
Pressing the metal fibers, different types of fibers, and the second carbon fiber-reinforced prepreg with release paper to a thickness of 0.7 to 0.8 times the total thickness of the first and second carbon fiber-reinforced prepregs with release paper, and the viscosity of the matrix resin in the first and second carbon fiber reinforced prepregs is 1000 to 50000c.
This is a method for producing a long hybrid prepreg, which is characterized by heating until p.

Further, according to another invention, metal fibers and one or more types of different fibers different from the metal fibers and carbon fibers are added to the carbon fibers arranged in one direction as reinforcing fibers. A method for manufacturing a long hybrid prepreg arranged in the same direction, comprising: (a) metal fibers and one or more types of different fibers different from the metal fibers and carbon fibers arranged at predetermined intervals so as to be continuous; (b)
(c) continuously supplying carbon fibers opened by a fiber opening means along with the metal fibers and the different types of fibers from both sides of the metal fibers and the different types of fibers; (c) the metal fibers, the different types of fibers, and the carbon fibers; (d) continuously supplying the first and second resin-coated papers together with the metal fibers, the different types of fibers, and the carbon fibers in such a manner that they are sandwiched; (d) the first resin-coated paper and the metal fibers; , the different types of fibers, the carbon fibers, and the second resin-coated paper are heated under pressure to be integrated, and the metal fibers, the different types of fibers, and the carbon fibers are impregnated with the matrix resin in the first and second resin-coated papers. Provided is a method for manufacturing a long hybrid prepreg characterized by the following.

4.1 Next, the hybrid prepreg and method for manufacturing the same according to the present invention will be explained in more detail with reference to the drawings.

FIG. 1 shows an embodiment of a hybrid prepreg 1 according to the present invention. According to this embodiment, the hybrid prepreg 1 includes metal fibers 6 and metal fibers 6 and carbon fibers 2 in carbon fibers 2 arranged in one direction as reinforcing fibers.
Different types of fibers 8 are arranged in the same direction as the carbon fibers 2. Although the metal fibers 6 and the different types of fibers 8 are arranged alternately in this embodiment, the method of arranging the metal fibers 6 and the different types of fibers 8 is not limited to this, and can be arranged as desired. It can be done.

The metal fibers 6 and the different types of fibers 8 are preferably located at the center of the unidirectional carbon fiber prepreg 4 as shown in FIG. Even if it is placed in the same position, the same effect can be achieved.

Further, according to the present invention, the different types of fibers 8 contained in the hybrid prepreg l do not have to be one type, but can be a plurality of types, for example, 2.3 types of different types of different types of fibers. For example, FIG. 3 shows an embodiment in which the different types of fibers 8 include two different types of different types of fibers 8a and 8b.

In this way, the different types of fibers 8 include a plurality of types of different types of fibers 8a,
8b, multiple types of different types of fibers 8a, 8b may be arranged between the metal fibers 6 as shown in FIG. 3, or as shown in FIG. A plurality of types of different types of fibers 8a and 8b may be alternately arranged as a reference. The arrangement relationship between the different types of fibers 8 (8a, 8b) and the metal fibers 6 may be arbitrarily selected as desired, as described above.

The metal fibers 6 used in the present invention include titanium fibers,
Amorphous fibers, stainless steel fibers, etc. are preferably used, and the diameter of such fibers is usually 50 to 150 μm, preferably 70 to 120 μm. Of course, it is also possible to include multiple types of metal fibers in the same prepreg.

Further, the different types of fibers 8 include glass fibers, other inorganic fibers such as boron fibers, alumina fibers, silicon carbide fibers, and silicon nitride fibers, or aramid fibers, polyarylate fibers,
Various organic fibers can also be used, such as polyethylene fibers.

The fiber size of boron fibers etc. is usually 50 to 150 μm, but the fiber diameter, i.e. the monofilament diameter (d), is Since the fiber f is small in diameter (5 to 50 um), when using the fiber f with such a small fiber diameter as the dissimilar fiber 8, it is necessary to form a strand (fiber bundle) in which a large number of fibers f are bundled together as shown in Fig. 5. used.

Therefore, in this specification, the fiber diameter of the different types of fibers 8 in the form of such a strand is a converted diameter expressed by the following formula. use.

D,=,=r td・d n: Number of convergent strands d: Fiber diameter Also, when such strands are used as the different fibers 8, as shown in FIG. 6, regardless of whether or not they are twisted,
In the hybrid prepreg 1, it does not exist in the form of a circular cross section with a reduced diameter D0, but is normally deformed into a flattened state. Therefore, as mentioned above, in order to produce a hybrid prepreg l having the same thickness (T) as when boron fibers with large fiber diameters are used as the different fibers 8, it is necessary to use strands as the different fibers 8. The fiber diameter in this case, that is, the converted diameter D0 is up to 50
Preferably, the thickness is 0 μm.

For example, an organic fiber such as a polyarylate fiber whose fiber diameter d is 23 μm has an equivalent diameter of 300 convergent fibers. is 398 μm, and the fiber diameter d is 13 μm.
By converging 800 glass fibers, the converted diameter D0 is 368 μm, and both of these strands are also suitably used as the different fibers 8 to form a hybrid prepreg l as shown in FIG. can be manufactured.

Similarly, as for the metal fibers 6, those having a small fiber diameter can be used in the form of a strand as described above.

The hybrid prepreg 1 constructed according to the present invention can be produced by various methods, but in particular, metal fibers and different types of fibers are interposed between two unidirectional carbon fiber reinforced prepregs using carbon fibers as reinforcing fibers. It is very suitably manufactured by arranging carbon fibers in the same direction at predetermined intervals and integrating them by pressing and/or heating.

To explain further, as shown in FIG.
On top of the first carbon fiber reinforced prepreg 4A having carbon fibers 2 with a fiber diameter of 5 to 30 μm held in
Metal fibers 6 and dissimilar fibers 8 having a fiber diameter of 50 to 500 μm, which is larger than that of carbon fibers, arranged in the same direction as the arrangement direction of the carbon fibers 2 of the first carbon fiber reinforced prepreg 4A. Further, a second carbon fiber reinforced prepreg 4B held on the same release paper 10 as the first carbon fiber reinforced prepreg 4A is superimposed in such a manner that the metal fibers 6 and the different types of fibers 8 are sandwiched, By pressing and/or heating the bidimensional fiber-reinforced prepregs 4A and 4B toward each other, the first carbon fiber-reinforced prepreg 4A, the gold R fibers 6 and the dissimilar fibers 8, and the second carbon fiber-reinforced prepreg 4B are 1 to 4, and 6.
A hybrid prepreg 1 according to the present invention as illustrated in the figures is formed.

The carbon fibers 2 as the reinforcing fibers of the first and second carbon fiber reinforced prepregs 4A and 4B may be the same carbon fiber, or may be carbon fibers with different strengths. The carbon fiber 2 usually has a fiber diameter of 5 to 30I as described above.
Lm, preferably 6 to 12 μm.

As the matrix resin, thermosetting matrix resins such as epoxy resin, unsaturated polyester resin, polyurethane resin, diallyl phthalate resin, and 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 is 50 to 500°C.

To give a preferable example, epoxy resin is preferable as the matrix resin, and usable epoxy resins include, for example, 11) glycidyl ether-based epoxy resins (bisphenol A, F, etc.).

S-based epoxy resin, novolac-based epoxy resin, brominated bisphenol A-based epoxy resin); (2) Cycloaliphatic epoxy resin; (3) glycidyl ester-based epoxy resin; (4) glycidylamine-based epoxy resin;
5) Heterocyclic epoxy resin: One or more types selected from various other epoxy resins are used, and bisphenol A, F, and S glycidylamine-based epoxy resins are particularly preferably used. Further, as the curing agent, diaminophenyl sulfone (DDS), diaminodiphenylmethane (DDM), etc. are preferably used.

Further, the blending ratio of carbon fibers, metal fibers, different types of fibers, and matrix resin in the hybrid of the present invention can be adjusted arbitrarily, but generally, in weight %, carbon fibers: metal fibers: different types of fibers: matrix resin = (30~ 70): (2-30
): (2-30) = (20-40). Further, according to the present invention, the thickness (T) of the prepreg can be made to be about the same as the fiber diameter of the metal fibers and different types of fibers used, but it will usually be about 80 to 200 μm.

Furthermore, the hybrid prepreg according to the present invention
It can also be manufactured by the method illustrated in the figure.

That is, carbon fibers 2, metal fibers 6, and different types of fibers 8 are arranged at predetermined intervals and in a predetermined arrangement on the first coated paper 14A coated with matrix resin 12, and then the various reinforcing fibers 2.6. The hybrid prepreg 1 according to the present invention is produced by overlapping the second coated paper 14B coated with the matrix resin 12 so as to cover the first coated paper 8, and then pressurizing and heating both coated papers.

Furthermore, the hybrid prepreg 1 according to the present invention can be manufactured very suitably in a drum winery.

That is, in FIG. 9, a drum 2 having a predetermined diameter
A unidirectional carbon fiber-reinforced pre-reg 4A using carbon fiber 2 as the reinforcing fiber, which is held on a release paper lO as shown in FIG. At this time, the arrangement direction of the carbon fibers 2 is arranged in the circumferential direction of the drum 20. Next, the metal fibers 6 and the different types of fibers 8 are transferred to the drum 20 from the bobbin 24 by the traverse device 2.
6 and is wound at a constant pitch onto the drum 20, that is, onto the carbon fiber reinforced prepreg 4A wound around the drum.

Next, as shown in FIG. The fiber-reinforced prepreg 4B is stacked on the surface of the drum 20 so that the fiber directions are aligned in the circumferential direction, and is joined to the first carbon fiber-reinforced prepreg 4A with the metal fibers 6 and the different types of fibers 8 sandwiched therebetween. , a hybrid prepreg 1 having a configuration according to the present invention is formed.

Note that as an alternative method, the second carbon fiber reinforced prepreg 4
In B, the metal fibers 6 and the different types of fibers 8 are arranged on the first carbon fiber reinforced prepreg 4A, and after being removed from the drum, they are superimposed, and if necessary, they are passed through a hot roller or the like. You can also do it.

First and second carbon fiber reinforced prepregs 4A, 4 used
B has the same configuration, with a thickness of 65 mm on the release paper 10.
It was formed in μm. The carbon fibers 2 as reinforcing fibers were PAN-based carbon fibers (manufactured by Toshi Co., Ltd., trade name: rM40J) with a fiber diameter of 6.5 μm, and the matrix resin was an epoxy resin. Further, the content of matrix resin was 33% by weight.

As the metal fiber 6, a titanium fiber with a fiber diameter of 100 μm is used, and as the dissimilar fiber 8, a convergence of 300 filaments of polyarylate fiber (pectran) with a fiber diameter of 23 μm is used. is 2mm
They were arranged so that they were spaced apart from each other.

The hybrid pre-reg 1 manufactured in this way is
A hybrid prepreg with a width of 300 mm, a length of 1.7 m, and a thickness (T) of 160 μm was obtained. The carbon fiber in the hybrid prepreg of this example is gold II! The blending ratio of fibers, different types of fibers, and matrix resin is in weight%, carbon fiber: metal fiber: different type of fiber: matrix resin = 53:
It was 4:17:26.

In addition, the mechanical strength and other properties of such hybrid prepreg were measured, and the hybrid prepreg 1 according to the present invention had both tensile strength and elastic modulus of 9 despite its thin thickness.
It is superior to the conventional hybrid prepreg shown in Figure 12, and especially when used in golf shafts, it can increase flying distance, stickiness, and compressive strength without sacrificing mechanical strength or feel during use (hitting feeling). It also had improved impact resistance and was aesthetically pleasing.

Table 1 shows hybrid prepregs produced according to the above method using different types of metal fibers 6 and different types of fibers 8, and their evaluation results.

Next, a method for manufacturing a long hybrid prepreg 1 according to the present invention will be described with reference to the drawings.

FIG. 10 shows an embodiment of a manufacturing apparatus for implementing the method for manufacturing a long hybrid bunobreg 1 according to the present invention.

In this example, first and second carbon fiber reinforced prepregs 4A and 4B using carbon fibers 2 as reinforcing fibers are held in a release paper 10 and are placed in an unwinder (unwinding section) in the form of a winding roll. ) 32A, 32B. The carbon fiber reinforced prepregs 4A and 4B with release paper pulled out from the unwinding parts 32A and 32B are attached to the press roll 34.
It is sent between A and 34B.

On the other hand, the metal fibers 6 and the different types of fibers 8 are placed on the press roll 34 while being arranged parallel to each other at a predetermined interval within the - plane.
A, 34B, therefore, the unwinding part 3
The release paper-attached carbon fiber reinforced prepregs 4A and 4B pulled out from the release paper 2A and 32B are rolled onto a press roll 34A along with the metal fibers 6 and the different types of fibers 8 with the metal fibers 6 and different types of fibers 8 sandwiched between them. , 34B.

The first and second carbon fiber reinforced prepregs 4A and 4B pass through the press rolls 34A and 34B so as to sandwich the metal fibers 6 and the different types of fibers 8, and then pass through the hot plate 36 and the second stage press roll. 38A, 38B
be passed to.

In this process, the metal fibers 6 and the different types of fibers 8 are buried and impregnated into the first and second carbon fiber reinforced prepregs 4A and 4B, and the metal fibers 6 and the different types of fibers are impregnated into the first and second carbon fiber reinforced prepregs 4A and 4B. A hybrid fiber-reinforced composite resin layer 4 in which the fibers 8 are integrated is formed.

Next, both release papers sandwiching the hybrid fiber-reinforced composite resin layer 4 are cooled by a cooling means (not shown) such as a cold plate, and then, in this example, only the upper release paper 10 is fiber-reinforced by a winder 50. It is peeled off from the composite resin layer 4. A cover film 54 supplied from an unwinder 52 is attached to the surface of the fiber-reinforced composite resin layer 4 adhering to the lower release paper 10, and then wound up in a winder 56 as a hybrid prepreg product.

According to the manufacturing method of this example, in the manufacturing apparatus with the above configuration,
Press rolls 34A, 34B and/or 38A, 38B
The interval is set to a thickness of 0.7 to 0.8 times the total thickness of the first and second carbon fiber reinforced prepregs 4A and 4B with release paper, and the hot plate 36
The first and second carbon fiber reinforced prepregs 4A and 4B are heated so that the viscosity of the matrix resin in the carbon fiber reinforced prepregs 4A and 4B is i ooo to 50,000 cp. As a result, the metal fibers 6 and the different types of fibers 8 are very suitably buried and impregnated into the matrix resin layers of the first and second carbon fiber reinforced prepregs 4A and 4B, and the first and second carbon fiber reinforced prepregs 4A and 4B are impregnated with each other. 4B, and the metal fibers 6 and dissimilar fibers 8 were found to be integrated. If the setting conditions are not met, the metal fibers 6 and the different types of fibers 8
does not suitably enter the center of the first and second carbon fiber-reinforced prepregs 4A and 4B, and the carbon fibers 2
, the alignment in the longitudinal direction of the metal fibers 6 and the different types of fibers 8 may be disturbed, and furthermore, the bonding interface between the first and second carbon fiber prepregs 4A, 4B may not be sufficiently fused, and this bonding interface may be damaged later. Peeling was sometimes observed.

In the manufacturing apparatus of the above embodiment, a long hybrid prepreg according to the present invention is continuously and efficiently manufactured.

The manufacturing method of the above embodiment will be described in more detail with numerical values as follows.

The first and second carbon fiber reinforced prepregs 4A and 4B using carbon fiber 2 as reinforcing fibers had the same configuration, and were formed to a thickness of 65 μm on a release paper 10 of 120 μm thick. .

The carbon fiber 2 used was a PAN-based carbon fiber (manufactured by Toshi Co., Ltd., trade name "M2O") having a fiber diameter of 6.5 μm, and the matrix resin used was an epoxy resin. Further, the content of matrix resin in the prepreg was 35% by weight.

As the metal fiber 6, a titanium fiber with a fiber diameter of 1100 u is used, and as the dissimilar fiber 8, a convergence of 300 filaments of polyarylate fiber (pectran) with a fiber diameter of 23 μm is used. is 2mm
They were arranged so that they were spaced apart from each other.

The distance between the press rolls 34A, 34B and 38A, 38B was 300 μm, and the thickness was set to be 0.8 times the total thickness of the first and second carbon fiber reinforced prepregs 4A, 4B with release paper. Further, the hot plate 36 is heated to 100°C, and the first and second carbon fiber reinforced prepregs 4A
The viscosity of the matrix resin in , 4B was 2000 cp.

In this way, a long pipe lid prepreg 1 having a width of 300 mm could be continuously manufactured at a manufacturing speed of 3 m/min.

Carbon fiber in the hybrid prepreg of this example,
The blending ratio of gold 111I# fiber, different fiber, and matrix resin was carbon fiber:metal fiber, different type fiber:matrix resin=53+4:17:26 in weight%.

In addition, the mechanical strength and other properties of such hybrid prepreg were measured, and the hybrid prepreg 1 according to the present invention had both tensile strength and elastic modulus of 9 despite its thin thickness.
It is superior to the conventional hybrid prepreg shown in Figure 12, and especially when used in golf shafts, it can increase flying distance, stickiness, and compressive strength without sacrificing mechanical strength or feel during use (hitting feeling). It also had improved impact resistance and was aesthetically pleasing. 1st
FIG. 1 shows another embodiment for manufacturing a long hybrid prepreg 1.

In this embodiment, the metal fibers 6 and the different types of fibers 8 are supplied between the press rolls 34A and 34B in a state in which they are arranged parallel to each other at a predetermined interval within a plane. The carbon fibers 2 used as reinforcing fibers are opened by a spreading means 60 such as a series of opening bars, and the opened carbon fibers 2 are then separated from the metal fibers 6 and the different types of fibers 8.
It is continuously supplied from both sides of the press rolls 34A and 34B together with the metal fibers 6 and the different types of fibers 8.

Further, first and second resin-coated papers 14, which are formed by applying matrix resin 12 to release paper 10, are attached to unwinders (unwinding m) 32A and 32B in the form of winding rolls. The resin-coated paper 14 pulled out from the chain unwinding parts 32A and 32B is rolled onto press rolls 34A and 34B in such a manner that the metal fibers 6, different types of fibers 8, and carbon fibers 2 are sandwiched therebetween.
sent between.

Therefore, the resin-coated paper 14 pulled out from the unwinding parts 32A and 32B contains the metal fibers 6, different types of fibers 8, and carbon fibers 2.
A press roll 34. A, 34B
It will pass between.

The first and second resin-coated papers 14 are placed on the press roll 3 so as to sandwich the metal fibers 6, different types of fibers 8, and carbon fibers 2.
After passing through 4A and 34B, it is successively passed through hot plate 36 and second stage press rolls 38A and 38B. In this process, the metal fibers 6, the different types of fibers 8, and the carbon fibers 2 are buried and impregnated into the matrix resin 12 of the first and second resin-coated papers 14, and the matrix resin 12, the carbon fibers 2, and the metal fibers 6 A hybrid fiber-reinforced composite resin layer 4 in which different types of fibers 8 are integrated is formed.

Next, both release papers sandwiching the hybrid fiber-reinforced composite resin layer 4 are cooled by a cooling means (not shown) such as a cold plate, and then, in this example, only the upper release paper 10 is fiber-reinforced by a winder 50. It is peeled off from the composite resin layer 4. A cover film 54 supplied from an unwinder 52 is attached to the surface of the fiber-reinforced composite resin layer 4 adhering to the lower release paper 10, and then wound up in a winder 56 as a hybrid prepreg product.

According to this embodiment, in the manufacturing apparatus having the above configuration, the distance between the press rolls 34A, 34B and/or 38A, 38B is 0.7 to 0.0 of the total thickness of the first and second resin coated paper 14.
．． The hot plate 36 is set to be 8 times thicker, and the hot plate 36 is
Matrix resin 1 in the first and second resin coated paper 14
It is preferable to heat the first and second resin-coated papers 14 so that the viscosity of the first and second resin-coated papers 14 becomes 1,000 to 50,000 cp.

As a result, metal fibers 6, different types of fibers 8 and carbon fibers 2
are very suitably buried and impregnated into the matrix resin 12 of the first and second resin coated papers 14, and the matrix resin 12, carbon fibers 2, metal fibers 6 and Different types of fibers 8 are integrated. By selecting such setting conditions, the alignment in the longitudinal direction of the carbon fibers 2, metal fibers 6, and different types of fibers 8 is not disturbed, and in particular, the metal fibers 6 and different types of fibers 8 are aligned in the center of the matrix resin layer. can be suitably entered into.

Furthermore, the matrix resin 1 of the first and second resin coated paper 14
The two bonding interfaces can be sufficiently fused, and no peeling will occur from this bonding interface later.

With the manufacturing apparatus of the above embodiment, hybrid prepreg can be manufactured continuously and efficiently.

The manufacturing method of the above embodiment will be described in more detail with numerical values as follows.

The first and second coated papers 14 used had the same structure, and were coated with epoxy resin to a thickness of 35 μm on a release paper 10 having a thickness of 120 μm. The carbon fiber 2 as a reinforcing fiber is PA with a fiber diameter of 6.5 μm.
N-based carbon fiber (manufactured by Toshi Co., Ltd.: product name rM40J)
were used, and 53 fibers were arranged in parallel on each of the metal fibers and the different types of fibers. The carbon fibers were uniformly opened in the width direction by the opening means 60 and arranged at a uniform density over a width of 300 mm.

The fiber-spreading means 60 is constituted by a normal fiber-spreading bar, and in this embodiment, three stainless steel bars 62 each having a diameter of 30 mm are arranged in parallel at an interval of 60 mm. The fibers were opened by passing the strand through the strand under a tension of 500 g/strand.

As the metal fiber 6, a titanium fiber with a fiber diameter of 100 μm is used, and as the dissimilar fiber 8, a convergence of 500 filaments of alumina fiber with a fiber diameter of 10 μm is used, and the interval between the metal fiber 6 and the dissimilar fiber 8 is 2 mm. It was arranged so that

The distance between the press rolls 34A, 34B and 38A, 38B was 3.0 mm, and the thickness was set to be 0.8 times the total thickness of the first and second coated paper 14. Further, the hot plate 36 was heated to 100° C., and the viscosity of the matrix resin in the first and second coated papers 14 was 2000 cp.

In this way, a long hybrid prepreg 1 having a width of 300 mm could be continuously manufactured at a manufacturing speed of 3 m/min.

Carbon fiber in the hybrid prepreg of this example,
The blending ratio of metal fibers, different types of fibers, and matrix resin was carbon fiber: metal fibers: different types of fibers: matrix resin = 49:3:23:24 in weight percent.

In addition, the mechanical strength and other properties of such a hybrid prepreg were measured, and although the hybrid prepreg 1 according to the present invention is thin, both tensile strength and elastic modulus are low.
It is superior to the conventional hybrid prepreg shown in Figure 12, and especially when used in golf shafts, it can increase flying distance, stickiness, and compressive strength without sacrificing mechanical strength or feel during use (hitting feeling). It also had improved impact resistance and was aesthetically pleasing.

Because the hybrid prepreg according to the present invention is configured as described above, it can improve physical properties such as mechanical strength, and is thinner than conventional hybrid prepregs. Despite its thinness, it has excellent compressive strength and elastic modulus. Especially when used in golf shafts, etc., it can increase flying distance, maintain stickiness, and compress It has improved strength and impact resistance, and is aesthetically pleasing. Furthermore, according to the manufacturing method of the present invention, carbon fibers, metal fibers, and different types of fibers can be arranged without disturbance in the length direction of the fibers, resulting in a hybrid prepreg that has good mechanical properties and is aesthetically pleasing. It has the advantage of being able to provide

[Brief explanation of drawings]

1 to 4 are cross-sectional configuration diagrams of a hybrid prepreg according to the present invention. FIG. 5 is a cross-sectional view of a strand showing one form of dissimilar fibers used in the present invention. FIG. 6 is a cross-sectional configuration diagram of another embodiment of the hybrid prepreg according to the present invention. FIGS. 7 and 8 are cross-sectional views illustrating a method for manufacturing a hybrid prepreg according to the present invention. FIG. 9 is a perspective view illustrating a preferred method of manufacturing a hybrid prepreg according to the present invention. FIGS. 10 and 11 are cross-sectional configuration diagrams illustrating a method of manufacturing another embodiment of the pipe lid prepreg according to the present invention. FIG. 12 is a cross-sectional configuration diagram of a conventional hybrid prepreg. 1: Hybrid prepreg 2: Carbon fiber 4.4A, 4B = Carbon fiber reinforced prepreg 6: Metal fiber 8: Different type of fiber 14: First and second resin coated paper 34A, B, 38A, B Nibble roller 36; Hot plate 60 : Engraving of the drawing of the opening means (no changes in content) Figure 1 Figure 4 Figure 3 f Figure 8 Figure 9 Figure 7 Procedural amendment (voluntary) February 28, 1990

Claims (1)

[Claims] 1) In carbon fibers arranged in one direction as reinforcing fibers,
A hybrid prepreg characterized in that metal fibers and one or more types of different fibers different from the metal fibers and carbon fibers are arranged in the same direction as the carbon fibers. 2) Two unidirectional carbon fiber reinforced prepregs using carbon fibers as reinforcing fibers, metal fibers arranged in the same direction as the carbon fibers, and one or more types different from the metal fibers and carbon fibers. A method for producing a hybrid prepreg characterized by sandwiching and integrating different types of fibers. 3) (a) Wrap a unidirectional carbon fiber-reinforced prepreg using carbon fibers as reinforcing fibers around the circumferential surface of a drum having a predetermined diameter so that the arrangement direction of the carbon fibers is aligned in the circumferential direction of the drum. Step (b) Wrapping metal fibers and one or more types of different fibers different from the metal fibers and carbon fibers at a constant pitch on the circumferential surface of the unidirectional carbon fiber reinforced prepreg wound around the drum. Step (c) In the state of being wound around the drum or in the state of being removed from the drum, further covering the surface of the unidirectional carbon fiber reinforced prepreg in which the metal fibers and different types of fibers are aligned, Other unidirectional carbon fiber reinforced prepreg using as reinforcing fiber,
A method for producing a hybrid prepreg, comprising the step of stacking the carbon fibers so that the arrangement direction of the carbon fibers is aligned in the circumferential direction of a drum. 4) Carbon fibers arranged in one direction as reinforcing fibers,
A method for producing a long hybrid prepreg in which metal fibers and one or more types of different fibers different from the metal fibers and carbon fibers are arranged in the same direction as the carbon fibers, the method comprising: (a) metal fibers and , arranging and continuously supplying one or more types of different fibers different from the metal fibers and carbon fibers at predetermined intervals; (b) separating the metal fibers and the different types of fibers by sandwiching them; (c) continuously supplying first and second carbon fiber-reinforced prepregs held by the paper pattern and made of carbon fibers as reinforcing fibers along with the metal fibers and the different types of fibers; 1 carbon fiber reinforced prepreg, metal fibers and different types of fibers, and a second carbon fiber reinforced prepreg with release paper, which is 0.7 to 0.8 times the total thickness of the first and second carbon fiber reinforced prepreg with release paper. A method for producing a long hybrid prepreg, comprising: pressing it to a thickness, and heating it until the viscosity of the matrix resin in the first and second carbon fiber reinforced prepregs becomes 1,000 to 50,000 cp. 5) Carbon fibers arranged in one direction as reinforcing fibers,
A method for producing a long hybrid prepreg in which metal fibers and one or more types of different fibers different from the metal fibers and carbon fibers are arranged in the same direction as the carbon fibers, the method comprising: (a) metal fibers and , arranging and continuously supplying one or more types of different fibers different from the metal fibers and carbon fibers at predetermined intervals; (b) spreading the carbon fibers opened by the fiber opening means into the metal fibers; and continuously feeding the dissimilar fibers along with the metal fibers and the dissimilar fibers from both sides of the dissimilar fibers; (c) first and second resin-coated papers in such a manner that the metallic fibers, dissimilar fibers, and carbon fibers are sandwiched; (d) processing the first resin-coated paper, the metal fibers, the different fibers, the carbon fibers, and the second resin-coated paper; A method for producing a long hybrid prepreg, comprising: pressing and heating to integrate the metal fibers, different types of fibers, and carbon fibers to impregnate the matrix resin in the first and second resin-coated papers.