JPH02112928A - Continuous manufacture of structural material - Google Patents

Abstract

PURPOSE:To enable the sharp molding of a mesh shape deformed surface to be formed by the method that a braid fibre structure formed in infiltrating a binding agent into fine fibrous lines prior to knitting into a braid fibre structure is penetrated sufficiently with the binding agent into respective fine fibrous lines of the braid fibre structure in decreasing the viscosity in a first heat furnace, and degassing and defoaming therefrom, and further, completely curing it in a second heating furnace by adhering particulate matter onto the surface thereof. CONSTITUTION:Fine fibrous lines 2 are passed through a infiltrating bath so as to infiltrate a binding agent thereinto, after that, braid fibre structure 4 is produced. The residual binding agent of the surface of the braid fibre structure 4 is wiped off by means of a squeeze 5. The binding agent infiltrated braid fibre structure 4 is run, being adjusted in a desired tension, between taking back or tension adjusting caterpillars 9, 10, and passed through a first furnace viscosity, and degassing and defoaming therefrom for infiltrating sufficiently only the binding agent into respective fine fibrous lines constituting the fibre structure 4. The residual binding agent on the surface of the braid fibre structure 4 is wiped off by a squeeze 12, and the surface thereof is covered with particulate matter 10 such as sand, silica fume or the like, and besides, the particulate covered braid fibre structure 4 is passed through a second heat furnace 12 in the temperature of 120-250 deg.C so as to be cured completely.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is applicable to reinforcing materials used to strengthen the tensile strength of structures by being embedded in structural materials with low tensile strength, such as concrete and plastics. A structural material used as a substitute for reinforcing bars or as a substitute for Pc steel wire, etc. More specifically, thin wires made of a material with high tensile strength are knitted into a braided fiber body, and the thin wires are tied together with a binder. The present invention relates to a method for continuously producing a structural material by attaching particulate matter to the surface of the braided fiber body.

(Prior Art) Conventionally, this type of structural material has been used, for example, as shown in Figure 3.
A binder-impregnated braided fiber body C, which is made by knitting fine wires into a braid shape and impregnated with a binder, is stretched over the support member fixed on the base a at a desired tension, and the surface of the braided fiber body C is coated with sand, for example. After that, the adjoining base a is conveyed into a curing furnace e, and the binder is hardened to produce the bonding material.

(Problems to be Solved by the Invention) However, in the case of the conventional method, the production speed is slow due to so-called batch production, and furthermore, if a large amount of binder is used to strengthen the binding force of each thin wire, it is difficult to obtain benefits. This has the disadvantage that it is difficult to form a mesh-like irregularly shaped surface on the surface of the structural material used.

An object of the present invention is to eliminate the above-mentioned disadvantages and to provide a method for continuously producing a structural material efficiently and in which a mesh-like irregularly shaped surface is formed sharply.

(Means for Solving the Problems) The continuous manufacturing method for structural materials of the present invention involves knitting thin wires made of a material with high tensile strength into a braided fiber body, binding the thin wires to each other with a binder, and A method for continuous production of a structural material by attaching particulate matter to the surface of the braided fiber body, wherein the fine wires are impregnated with a binder before being knitted into the braided fiber body, and then the binder-impregnated fine wires are braided. After knitting into a fibrous body, excess binder on the surface of the braided fibrous body is wiped off, and the obtained binder-impregnated braided fibrous body is first heated in a first heating furnace while applying a desired tension to lower the viscosity of the binder. At the same time, deaeration and defoaming are performed, excess binder is wiped off on the surface of the braided fiber body, and then, after granules are attached to the surface of the braided fiber body, the braided fiber body with the particulate matter attached thereto is heated in a second heating furnace. Consists of curing.

The thin wire may be impregnated with the binder by impregnating the thin wire itself with the binder, or by forming the thin wire into a strand and then impregnating the strand with the binder. In addition, when impregnating the strand with a binder,
This may be done immediately before knitting the strand into a braided fiber body.

(Function) The braided fiber body, which is formed by impregnating the fine wires with a binder before being knitted into a braided fiber body, is sufficiently impregnated with the binder to the inside thereof, and then the excess binder on the surface is wiped off. The viscosity of the binder-impregnated braided fibrous body is lowered in the first heating furnace, and the binder sufficiently penetrates between each thin wire of the braided fibrous body.
Degassed and defoamed. The obtained binder-impregnated braided fiber body is
After wiping off the excess binder on the surface and forming a sharp mesh-like irregular surface, particulate matter is attached to the surface of the braided fiber body, and in this state, it is fully cured in a second heating furnace. Ru.

(Examples) Examples of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a process diagram of the manufacturing method of the present invention, in which reference numeral 1 indicates a known braid knitting device, in which a thin wire 2 made of, for example, aromatic polyamide fibers of about 10 deniers is soaked in an impregnating tank (not shown). The 6000 denier strands 3, which have been impregnated with a binder by passing through the strands, are knitted into a 8-strand round string shape with a diameter of 2.
A 5 mm braided fiber body 4 is continuously produced, and then the excess binder on the surface of the obtained braided fiber body 4 is wiped off with a squeeze 5 for wiping off the excess binder, and the braided fiber body 4 is impregnated with the binder.
Adjust the tension between the take-up caterpillar 6 and the tension adjusting caterpillar 7 to the desired tension and run the
While passing through the first heating furnace 8 set at about 80° C., the viscosity of the binder is lowered, and the binder is degassed and defoamed, and only the binder is sufficiently impregnated between each of the thin wires 2 constituting the braided fiber body 4. . Next, the excess binder on the surface of the braided fiber body 4 is wiped off with a squeeze 9 for wiping off the excess binder provided at the outlet side of the heating furnace 8, and the surface is coated with a particle size of about 1 to several meters.
A granular material 10 such as sand or silica neem with a thickness of about 1.5 m is supplied dropwise from a hopper 11 and attached to the material, and the granular material-adhered braided fiber body 4 is heated while passing through a second heating furnace 12 set at a temperature of about 120 to 250°C. Let it harden. Thereafter, the braided fiber body 4 is passed through a cooling furnace 13 set at a temperature of 80° C. or less to be cooled to room temperature, and then cut into a desired length with a cutter 14.

In this way, a braid-like structural material having a sharply formed mesh-like irregular surface is obtained as shown in the second figure.

In the case of the above embodiment, an example was shown in which the thin wire 2 itself was impregnated with a binder, but although not particularly shown, the thin wire was once made into a strand 3 and then fed to the braid knitting machine 1. This may be done by impregnating the strands 3 with a binder in the supply path where the strands are knitted, or just before the strands are knitted into braided fibers 4 in the braiding machine 1.

The thin wires 2 are not limited to the aromatic polyamide fibers mentioned above, but may also include inorganic fibers such as carbon fibers, glass fibers, and ceramic fibers, and organic fibers such as polyester fibers, high-strength polyolefin fibers, strong polyamide fibers, and strong polyvinyl alcohol fibers. , cold-drawn steel wire, prestressing steel wire, and other metal wires may be used alone or in combination.

The thin wires 2 are knitted into a braided fiber body in the form of a circular braid,
It can be knitted into any desired braided shape, such as a square braided cord or a hand-strung cord.

The binder is not limited to the epoxy resin, but includes organic binders such as polyester, vinyl ester, phenol, and polyimide, alkali metal silicate, colloidal silica, and phosphate. An inorganic binder such as a cement-based binder or a cement-based binder can be used.

(Effects of the Invention) As described above, according to the continuous manufacturing method for structural materials of the present invention, the braided fiber body formed by impregnating the binder into the fine wires before being knitted into the braided fiber body has a After that, the binder-soaked braided fibers are thoroughly impregnated with the binder until the excess binder is wiped off the surface, and the viscosity of the binder-impregnated braided fibers is lowered in the first heating furnace, and the binder is applied between each thin wire of the braided fibers. With sufficient penetration,
The resulting binder-impregnated braided fibers are degassed and defoamed.
After wiping off the excess binder on the surface and forming a sharp mesh-like irregular surface, particulate matter is attached to the surface of the braided fiber body, and in this state, it is fully cured in a second heating furnace. As a result, it is possible to produce a braid-like structural material in a highly efficient and continuous manner, in which a mesh-like irregularly shaped surface is sharply formed and the thin wires are firmly connected to each other.

[Brief explanation of the drawing]

FIG. 1 is a process diagram of the continuous production method for the structural material of the present invention, FIG. 2 is a front view of the structural material obtained by this method, and FIG. 3 is an explanatory diagram of the conventional method. 1... Braid knitting device 2... Thin wire 3... Strand 4... Braid fiber body 5.9... Squeeze for wiping off excess binder 6... Caterpillar for take-up 7...・Tension adjustment caterpillar 8...First heating furnace 10...Particles 12...Second heating furnace 13...Cooling furnace 14...Cutter patent application Mitsui Construction Co., Ltd.

Claims (1)

[Claims] 1. Thin wires made of a material with high tensile strength are knitted into a braided fiber body, the thin wires are bound to each other with a binder, and granules are attached to the surface of the braided fiber body. A continuous manufacturing method for a structural material comprising: impregnating the thin wires with a binder before knitting them into a braided fiber body; then knitting the binder-impregnated thin wires into a braided fiber body; The binder is wiped off, and the obtained binder-impregnated braided fiber body is first heated in a first heating furnace while applying a desired tension to lower the binder viscosity and degas and defoam, and the surface of the braided fiber body is heated. A method for continuous production of a structural material, which comprises wiping off excess binder, adhering particulate matter to the surface of the braided fiber body, and then fully curing the particulate matter-attached braided fiber body in a second heating furnace. 2. The continuous manufacturing method according to claim 1, wherein the thin wire is impregnated with a binder by impregnating the thin wire itself with a binder. 3. The continuous manufacturing method according to claim 1, wherein the thin wire is impregnated with a binder by forming the thin wire into a strand and then impregnating the strand with the binder. 4. The continuous production method according to claim 3, wherein the impregnation of the binder into the strand is carried out immediately before knitting the strand into a braided fiber body.