JPS60952A - Composite material and manufacture thereof - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a composite (A1) and a method for producing the same.

Reinforced metal f; (((Reinforced with 411)
11 Reinforced Metal Material Old 4 Generally, compared to materials made only of metal, the specific strength and specific modulus of elasticity are higher.In particular, those made by aligning reinforcing fibers in one direction, However, the strength in the direction perpendicular to the first axis, that is, the lateral direction, is low;
They may even be inferior to those made only of metal. The reason for this is that the adhesive force at the interface between the reinforcement II It and the metal is weak, but if this problem is solved and the above adhesive strength is improved, the fracture energy of the reinforcement II It becomes easier to propagate. ,
In turn, the strength in the fiber axis direction decreases.

This problem of so-called anisotropy can be solved by arranging reinforcing fibers in multiple layers instead of arranging them in one direction only, so that the reinforcing fibers between each layer intersect H at any angle. In other words, this problem can be solved to some extent by cross-laminating. However, if this is done, another problem arises in that large distortions occur due to the different coefficients of thermal expansion in each direction, which tends to cause cracks between layers and morphological distortions.

The purpose of this invention is to solve the above-mentioned drawbacks of the conventional compound monthly interest rate system, and to arrange the reinforcing IM miscellaneous only in one direction.

So-called unidirectional reinforcement has high strength in the transverse direction, and tjL', which is made by cross-laminating reinforcing fibers, can prevent layer cracking and form distortion, and is still high strength. The present invention provides a composite material and a method for manufacturing the same.

In order to achieve the above object, the present invention provides a composite material characterized in that fiber-reinforced metal material layers and metal material layers are alternately and integrally layered. In addition, in this invention, as a method for manufacturing such a composite material, the intersection of metal foil and reinforcing 8J & string is described.
A method for manufacturing a composite material is provided, which comprises pressurizing and impregnating a riR'i layer with molten metal.

To explain one embodiment of the composite material of the present invention, FIG. 1 (schematic perspective view) shows a fiber made by reinforcing a so-called 71 to 100% metal 3 with continuous reinforcing fibers 4 aligned in the longitudinal direction. Reinforced metal material layers 1 and metal material layers 2 made only of metal and not reinforced with reinforcing fibers alternate,
It shows a rectangular parallelepiped-shaped composite material that is integrally layered.

In this example, the reinforcing fibers of all the IJi fiber-reinforced metal material layers are oriented in the longitudinal direction of the composite material, but as shown in Figure 2 (schematic perspective view), the reinforcing fibers are oriented in the longitudinal direction. The layers oriented in the width direction and the layers oriented in the width direction may be arranged alternately with the metal material layers lυ. Also, when looking at two fiber-reinforced metal material layers facing each other with a metal material layer in between, the reinforcing fibers of those two layers are
For example, various arrangements can be made, such as intersecting each other at an angle of 30 to 60 degrees.

In the above, the 71-lix metal of the fiber-reinforced metal material layer is typically used as a matrix for Il fiber-reinforced metals, such as aluminum, copper, nickel, magnesium, titanium, or at least one of these as a main component. Alloy J: Umono. In addition, the reinforcing fibers include high strength and high elasticity f! Ire(!r#) These reinforcing fibers are
15-75% by volume based on the whole, preferably 30-70%
Contains volume%. Note that the reinforcement IJ11 may be in the form of continuous fibers as shown in the embodiments, or may be in the form of short fibers. Moreover, it may be in the form of a woven fabric or a sheet of pine wood.

The metal applied to the metal material layer is preferably the same type of metal as the matrix metal in the 41 fiber-reinforced metal material layer, but may be different.

The metal material layer relieves interlayer strain between the IJJI fiber-reinforced fully reinforced metal material layers, improves the lateral strength of the composite material as shown in Figure 1, and improves the transverse strength of the composite material as shown in Figure 2. The structure shown above works to prevent cracks between layers and form distortion of the composite material, thereby improving its strength.

Therefore, the thickness of this metal material layer is preferably 10 μm or more. Usually, the thickness may be about 15 to 100 microns.

In the composite material of the present invention, a molten metal of the same kind or a different kind as the above metal is added to an alternately laminated body of metal foil and reinforcing fibers forming six layers of metal materials, preferably at a temperature of 200 to 2000K (
It can be manufactured by pressurizing and impregnating at a pressure of J/cm2. By pressurizing and impregnating the above laminate with molten metal, HM+ If
A reinforced metal abrasive layer is formed, and at the same time, the fiber reinforced metal material layer and metal foil are integrated. More specifically, it is preferable to use the following method.

In other words, if you want the reinforcing fibers in the fiber-reinforced metal material layer to be aligned in one direction, first wrap a metal foil of the desired thickness around a cylindrical drum, and then apply an organic binder (temporary) on top of it. Wrap a desired amount of reinforcing fibers (multifilament or monofilament) impregnated with a reinforcing fiber (blocking agent, filler) around the fiber-reinforced metal material layer, taking into account the volume content of the reinforcing fibers per hub, and overlap the metal foil and reinforcing fibers. Obtain a combination.

Next, the stacked body is removed from the drum and cut into a desired size.

Next, a plurality of the above-mentioned cut pieces are stacked so that the direction of the reinforcing fibers of each cut piece is in an arbitrary direction, and the metal foil and the reinforcing u
An alternating laminate of i and m is obtained.

Next, the laminate is placed in a mold, and molten metal of a desired type is impregnated under pressure, that is, cast. As a result, the composite material of the present invention is obtained.

The above method can be applied even when the reinforcing mtia is in the form of a sheet material such as a fabric or a mat. however,
In this case, the metal foil and the sheet-like reinforcing 11 fibers may be stacked one after another to form a laminate having a desired thickness of 4rV. In addition, when the reinforcing fibers are short fibers, the desired amount of short fibers is scattered on a single layer of metal foil, the metal foil is placed on top of it, and this operation is repeated the necessary number of times to obtain a laminate of the desired thickness. j7 It's so hot.

The composite material of this invention can be used in various applications. For example, aerospace products such as blades, unblades, ribs, engine parts, and minor parts (for example, connecting rods, cylinder heads, crankcases, pistons, piston pins, ships and vehicles such as I-shaped arms, bushing rods, etc.)・As a material for automobile parts, as a material for electrical and electronic equipment such as substrates, electrodes, and contacts, as a material for sliding parts such as bearings, vanes, brushes, and brakes, as a material for IL 9 II equipment such as speakers, and as a material for golf clubs. head, tennis racket, skis,
It can be used as a material for sports and leisure goods such as bicycle parts, and as a material for medical equipment such as prosthetic limbs and hands. It can also be used as a component material for various textile machines, printers, office equipment, generators, etc., and can also be used in flywheel configurations. Can be used as 3+.

Next, the composite material of the present invention and the 3% manufacturing method thereof will be explained in more detail based on Examples.

Example 1 Aluminum foil with a thickness of 20μ is straight B I Q 00m
m, wrapped around a drum with a width of 300ml, and on top of it,
A carbon fiber string "Toreca" M 7IO manufactured by Toshi Co., Ltd. impregnated with an aqueous polyvinyl alcohol solution was wound in a single layer without any gaps to obtain a compact assembly of aluminum foil and carbon fiber.

After the polyvinyl alcohol was dried, the stacked body was removed from the drum and cut into pieces of 70 mm square to obtain cut pieces.

Next, 30 pieces of the above-mentioned cut pieces were stacked with the carbon fibers aligned in the same direction to make a laminate, and this was put into a die.
Impregnated with a pressure of 12, this invention? I got the money.

Next, the composite material was cut out into a piece having a length of 70n+m, a width of IQmm, and a thickness of 3mm so that the direction of the carbon fibers was in the longitudinal direction to obtain a first test piece. Similarly, a second test piece having a length of 5Qmm, a width of 2Qrnm, and a thickness of 3mm was cut out with the carbon fibers oriented in the width direction.

Next, using a three-point bending test section, the bending strength of the first test piece in the longitudinal direction was measured and found to be approximately 132 K CJ /mm2. Also, the second
Measurements were made in the same manner on a test piece of [Bending strength was approximately 9K]
CJ/mm2 and ivy.

Comparative Example 1 The aluminum foil was peeled off from the stacked body used in Example 1 above, and carbon was removed! ! Composite Uwa 1 without a metal material layer was prepared in exactly the same manner as in Example 1 using only a string.
I got it.

Next, two scale test pieces, the same as those in Example 1, were cut out from the above composite material and subjected to a bending test.The bending strength of the first test piece was approximately 140 kg/mm2. Although slightly higher than that of Example 1, that of the second specimen was only about 3 KQ/m1112, which was less than one third of that of Example 1.

Example 2 A 70 mm square cut piece similar to that used in Example 1 was
This time, the directions of the carbon fibers are perpendicular to each other.
0 sheets are stacked to make lr1 layer body, j:l non-example 1
Create a composite material in the same manner as above, and add 1jl of carbon to one side.
A test piece was obtained by cutting out a piece with a length of 70 mm, a width of 10 mm, and a thickness of 3 mm so that the lt direction was the longitudinal direction.

Next, when we measured the bending strength in the -C longitudinal direction of the above test piece, it was approximately 68KCI/111+112.
is.

Comparative Example 2 Similar to Example 2, but using the cut pieces from which the aluminum foil was peeled off, a composite material without the metal layer was prepared at 4!71 [.

In order to measure the bending strength, an attempt was made to cut out the same test J1 as in Example 2 from the above composite material, but it was impossible due to significant cracking over 1 m.

[Brief explanation of drawings]

Figures 1 and 2 are different actual films! +
(i:'. Schematic perspective view showing the composite filter '31 of this invention'<,
” 6. 1: Fiber-reinforced metal H material layer 2: Metal vJ rice layer 3: Metal 4: Reinforcement 1lli fiber patent applicant Toshi Co., Ltd. 1

Claims (2)

[Claims] (1) A composite 4-ocline characterized in that fiber-reinforced metal JUI layers and metal material layers are alternately and integrally layered. (2) A method for producing a composite monthly rate, which comprises pressurizing and impregnating a molten metal into an alternately laminated body of metal foil and reinforcing fibers.