JPH02118171A - Surface treatment of structural material - Google Patents

Abstract

PURPOSE:To obtain a structural material excellent in bond strength to matrix structure by preparing a braid fibrous form by knitting fine fiber of high tensile strength, binding the fiber with a binder and spraying rigid granules on the resultant surface to make the surface more coarse with fine pores formed thereon. CONSTITUTION:A braid fibrous form 2 is first prepared by knitting fine fiber 1 of high tensile strength (e.g., aromatic polyamide fiber). The respective fine fibers 1 are mutually bound through a binder 3 consisting of e.g., epoxy resin, and rigid granules such as sand are sprayed with injection pressure on the surface of the fibrous form 2 to form fine pores 6 thereon, thus easily producing the more coarse, uniform surface, leading to higher bond strength of the resultant structural material to matrix, e.g., concrete, plastic, etc., into which the material is to be embedded as reinforcing material.

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. Structural materials used as a substitute for reinforcing bars or as a substitute for PC steel wires, more specifically, as disclosed in JP-A No. 61-290150, thin wires are knitted into a braided fiber body and the thin wires are The present invention relates to a surface treatment method for a structural material formed by bonding these materials together with a binder.

(Prior Art) Conventionally, as shown in the second diagram, a structural material is made by knitting this kind of wire a into a braided fiber body b L and binding the thin wires a with a binder C. In order to increase the binding force with concrete, etc., particulate matter d such as sand is attached to the surface of the braided fiber body using, for example, a binder C, and the surface is treated to have a rough surface.

(Problems to be Solved by the Invention)]7 However, in the case of the conventional surface treatment method, since the surface of the braided fiber body is a mesh-like irregular surface,
It has been disadvantageous that it is difficult to ensure that the particulate matter d adheres to the surface of the assembled fiber body.

The present invention eliminates the above-mentioned disadvantages and can reliably treat the surface of a braided fiber body to a rougher surface (an object of the present invention is to provide a method for surface treatment of paddy for 14-year production).

(Means for Solving the Problems) The method for surface treatment of structural materials of the present invention involves knitting fine wires with high tensile strength into a braided fiber body, and bonding the fine wires to each other with a binder. This is a surface treatment method characterized by spraying hard particles such as sand grains onto the surface of the braided fiber to form micropores on the surface of the braided fiber.

(Function) The surface of the braided fiber body is sprayed with hard particles such as sand grains to form micropores, and the mesh-like irregularly shaped surface formed by the braided braid is formed into a rougher surface.

(Example) Examples of the method for surface treatment of structural materials of the present invention will be described below with reference to the accompanying drawings.

In the illustrated embodiment, a structural material is formed by binding each thin wire 1 of a braided fiber body 2, which is formed by knitting thin wires 1 made of, for example, aromatic polyamide fibers, into a braid shape, with a binder 3 such as an epoxy resin. This is an example of the surface treatment of steel balls, sand, and other hard particles with particle diameters ranging from one tens of tenths to several tenths of a particle size while taking such structural materials with a taking device (not shown).
Spraying with a predetermined injection pressure is performed using a nozzle, etc., using device 5.
Spray all around it. In this way, the mesh-like surface of the braided fiber body 1 collides with the hard particles 4, and a large number of micropores 6, . . . are formed, resulting in a rougher surface.

(Effects of the invention) As described above, according to the method for surface treatment of structural materials of the present invention,
It has the effect that a desired degree of uniform roughness can be formed extremely easily simply by spraying the hard particles.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the method for surface treatment of structural materials of the present invention, and FIG. 2 is a perspective view of a structural material surface-treated by a conventional surface treatment method. 1... Thin wire 2... Braided fiber body 3... Binder 4... Hard granules 5... Spraying device 6... Fine pores

Claims (1)

[Claims] A method for surface treatment of a structural material in which fine wires with high tensile strength are knitted into a braided fiber body and the fine wires are bound to each other with a binder, the method comprising hard particles such as sand grains on the surface of the braided fiber body. 1. A method for surface treatment of a structural material, which comprises spraying to form micropores on the surface of the braided fiber body.