JPH0544904B2 - - Google Patents

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is useful as a reinforcing material used to strengthen the tensile strength of a structure by being embedded in a structural material with low tensile strength, such as concrete or plastic. Structural materials used as a substitute for reinforcing steel or as a substitute for PC steel wire, more specifically,
A continuous manufacturing method for a structural material, which comprises knitting fine wires made of a material with high tensile strength into a braided fiber body, binding the fine wires to each other with a binder, and attaching particulate matter to the surface of the braided fiber body. Regarding.

(Prior Art) Conventionally, this type of structural material has been bonded by knitting thin wires into a braided cord and impregnating it with a binder to a supporting member b fixed on a base a, as shown in FIG. 3, for example. Stretching the agent-impregnated braided fiber body c with a desired tension, attaching particulate matter d such as sand to the surface of the braided fiber body c,
Thereafter, the base a is transported into a hardening furnace e, and the binder is hardened to manufacture the product.

(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 in addition, a large amount of binder is used to strengthen the binding force of each thin wire. A disadvantage is that the mesh-like irregularly shaped surface of the structural material is difficult to form sharply.

An object of the present invention is to eliminate the above-mentioned disadvantages and to provide a method for efficiently and continuously producing a structural material 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 continuously producing a structural material by attaching particulate matter to the surface of the braided fiber body, the method comprising: knitting the fine wires into a braided fiber body, then impregnating the braided fiber body with a binder, and adding The excess binder on the body surface is wiped off, and the obtained binder-impregnated braided fiber body is first heated in a first heating furnace while applying the desired tension to lower the binder viscosity and degas and defoam. The process consists of wiping off excess binder on the surface of the braided fiber body, then adhering particulate matter to the surface of the braided fiber body, and then main-curing the particulate matter-adhered braided fiber body in a second heating furnace.

Incidentally, the impregnation of the binder into the braided fibrous body may be performed after the braided fibrous body is loosened.

(Function) The braided fiber body is impregnated with a binder, and after that, the binder-impregnated braided fiber body whose surface is wiped of excess binder is lowered in viscosity in the first heating furnace, and the binder is absorbed into the braided fiber body. It sufficiently penetrates into the spaces between each thin wire, and is also degassed and degassed. The excess binder on the surface of the obtained binder-impregnated braided fiber body is wiped off, and particulate matter is adhered to the surface of the braided fiber body with the mesh-like irregularly shaped surface formed in a sharp manner. In this state, main hardening is performed in the second heating furnace.

In addition, if the binding agent is impregnated into the braided fiber body after the braided fiber body is loosened, the binder will be sufficiently impregnated into each of the thin wires that make up the braided fiber body. 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 production method of the present invention, in which reference numeral 1 indicates a known braid knitting device, in which a 6000 denier braid consisting of a thin wire 2 made of aromatic polyamide fiber of about 10 denier, for example, is made. The strands 3 are knitted into eight round braids to continuously produce a braided fiber body 4 with a diameter of 2.5 mm, and then the obtained braided fiber body 4
The yarn is run between loosening rolls 5, 5 to create slack between each strand 3 and between each thin wire 2, and then the braided fiber body 4 with the slack introduced is placed in a binder 6 such as an epoxy resin. The braided fiber body is impregnated with a binder by passing through an impregnating tank 7. Then,
Excess binder on the surface of the braided fiber body 4 impregnated with the binder 6 is wiped off with a squeeze 8 for wiping off excess resin provided above the impregnating tank 7, and the binder-impregnated braided fiber body 4 is removed by a caterpillar 9. The tension is adjusted to the desired tension between the and tension adjusting caterpillar 10, and the binder is first run through a first heating furnace 11 set at a temperature of about 120 to 180°C to lower the viscosity of the binder and degas and defoamer. , 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 12 for wiping off the excess binder provided on the exit side of the first heating furnace 11, and a particle size of 1 mm to several tenths of the particle size is applied to the surface. A granular material 13 such as sand or silica fuyum of about 1.0 mm in size is dropped from the hopper 14 and attached, and the granular material-attached braided fiber body 4 is heated to a temperature of 120 to 250.
Main hardening is performed while passing through the second heating furnace 15 set at about .degree. After that, the braided fiber body is heated to
After passing through a cooling furnace 16 set at 80° C. or lower and cooling to room temperature, the material is cut into a desired length with a cutter 17. In addition, 18 in the figure shows a guide roll.

In this way, a braid-like structural material having a mesh-like irregularly shaped surface formed into a sharp shape is obtained as shown in the second figure.

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

The thin wires 2 can be knitted into a braided fiber body in any desired braided shape, such as a square braided string, a flat braided string, etc., in addition to the above-mentioned circular braided shape.

The binder is not limited to the epoxy resin, but may include 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 is impregnated with a binder, and then the excess binder on the surface is wiped off. The viscosity of the body is lowered in the first heating furnace so that the binder sufficiently penetrates into the spaces between each thin wire of the braided fiber body, and it is also degassed and defoamed, and the resulting binder-impregnated braided fiber body is Excess binder is wiped off, and particulate matter is attached to the surface of the braided fiber body with a mesh-like irregularly shaped surface formed in a sharp shape,
In this state, it is fully cured in the second heating furnace, so that it is possible to continuously produce braid-like structural materials with a sharp mesh-like irregular surface and each thin wire tightly bound to each other in an extremely efficient manner. It has the following effects.

In addition, if the impregnation of the binder into the braided fiber body is performed after the braided fiber body is loosened,
The effect is even more pronounced because each thin wire is fully adhesive with a minimum amount of binder.

[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. DESCRIPTION OF SYMBOLS 1... Braid knitting device, 2... Thin wire, 3... Strand, 4... Braid fiber body, 5... Loosening roll, 6... Binder, 7... Impregnation tank, 8, 12...
Squeeze for wiping off excess binder, 9... Caterpillar for take-up, 10... Caterpillar for tension adjustment,
11...first heating furnace, 13...granular material, 14...
Hopper, 15...Second heating furnace, 16...Cooling furnace, 17...Cutter.

Claims (1)

[Claims] 1. A product made by 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 adhering particulate matter to the surface of the braided fiber body. A method for continuous production of structural materials, in which the thin wires are knitted into a braided fibrous body, the braided fibrous body is then impregnated with a binder, and the excess binder on the surface of the braided fibrous body is wiped off. The 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 and degassed and defoamed, and the excess binder on the surface of the braided fibrous body is wiped off. A continuous manufacturing method for a structural material, which comprises 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 impregnation of the binder into the braided fiber body is carried out after the braided fiber body is loosened.