JPH08389Y2 - Reinforcing mesh fabric of inorganic materials - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention is based on an inorganic material such as cement as a main material.
The present invention relates to a reinforcing fabric used for constructing various building materials such as wall materials.

(Prior Art) Using an inorganic material such as cement and a coarse woven fabric mainly composed of carbon fiber for various building materials, that is, a so-called fiber-reinforced inorganic material is disclosed in Japanese Patent Laid-Open No. 63-55146. Are known.

In this known example, a carbon fiber yarn is used for the warp and the mesh size is obtained by flattening the mesh size to a roughness of 5 to 150 mm and stopping the intersection of the warp and the weft with copolymer nylon or the like for reinforcement. Used for.

Further, in this known example, the carbon fiber yarn is formed by bundling 3,000 to 30,000 single fibers each having an average diameter of about 5 to 10 μm. It is shown that after impregnation, the resin is cured and used, and that a thin yarn made of a material having a higher melting point than the sealing material is wound.

However, since the mesh fabric has coarse meshes, the systematic restraining force of the warp and weft yarns is extremely weak, and thus the yarn arrangement may be disturbed by a slight external force. In particular, weft yarns with no tension tend to bend greatly. Therefore, in this known example, the sealing is performed.

In order to solve the problem due to such yarn disorder, a mesh fabric in which a warp group and a weft group arranged in layers are integrated by a warp structure using an auxiliary yarn is disclosed in Japanese Patent Laid-Open No. Sho 63-63.
-Proposed by 197751.

This mesh fabric has a warp, weft, and auxiliary yarn to increase the systematic restraint force by adopting a warp design, so that weft alignment can be prevented when impregnated with a thermosetting resin. It is valid.

However, unfortunately, this published patent publication Sho 63-
In the method according to 197751, since the yarn arrangement in the thickness direction is not symmetrical, there is a drawback that the woven fabric warps as the thermosetting resin cures. Furthermore, although this mesh fabric uses auxiliary yarns, the auxiliary yarns are strongly bent while the warp yarns and weft yarns are strongly tightened, so when tension is applied to the warp yarns, the weft yarns that do not receive tension are greatly bent in the thickness direction. There is a problem that ends up. Therefore, when the thermosetting resin is impregnated, the width of the woven fabric is not kept constant, which causes a problem in using the finished woven fabric.

(Problems to be solved by the invention) The present invention is to remedy the drawbacks of the conventional technology so that even if the resin cures after being impregnated with a thermosetting resin, the woven fabric does not warp and has a flat finish. It is to provide a woven fabric, and to provide a woven fabric in which the weft does not bend when impregnated with a thermosetting resin, that is, a woven fabric in which the width of the woven fabric is easily kept uniform even when impregnated. .

(Means for Solving the Problem) The present invention provides a woven fabric in which warp yarns and weft yarns made of carbon fiber yarns have a plain weave mesh structure and are woven with auxiliary yarns extending around the warp yarns.

The warp and weft of the mesh fabric of the present invention are all made of carbon fiber yarn. This carbon fiber thread has a reinforcing effect on an inorganic material such as cement.

The carbon fiber yarn has a single fiber diameter of 5 to 15 μm and a number of single fibers of about 3,000 to 1,000,000.
The thickness of the thread can be appropriately selected according to the application.

The warp and the weft have a plain weave structure structure. Furthermore, it is twisted and organized by a thin auxiliary yarn extending around the warp. Mojiri organization is also called entangled organization.

The auxiliary yarn to be twisted and woven is one in which the parallel weft yarns are entangled with each other, and the auxiliary yarns that are adjacent to each other have opposite ups and downs with respect to the weft yarn.

Further, the position at which the auxiliary yarn is entangled may be not only one weft yarn but also an odd number of yarns such as three, five, .... At the skipped position, the auxiliary yarn and the warp yarn are set so that the ups and downs are opposite to each other.

As a result of such a structure structure, the weft yarn is always sandwiched between the warp yarn and the auxiliary yarn.

The auxiliary yarn preferably has a dry heat shrinkage rate of 0.5% or less at 200 ° C., and examples thereof include carbon fiber yarn, glass fiber yarn, polyaramid fiber yarn, and vinylon fiber yarn. Since these fiber yarns hardly shrink when impregnated with the thermosetting resin, the flatness of the woven fabric can be maintained without causing the warp yarns and the weft yarns to bend due to the shrinkage of the auxiliary yarns.

Further, the auxiliary yarn preferably has a smaller thickness than the warp yarn and the weft yarn. Generally, it is half or less, preferably one third or less.

The fineness of the auxiliary thread is important for the fabric construction. If the thickness of the auxiliary yarn is about the same as that of the carbon fiber yarn, even if the carbon fiber yarn is woven into the plain weave structure, the flatness of the woven fabric is lost, and warpage is likely to occur when impregnated with the resin. Further, in the case of being extremely thin, for example, 1/50 or less, it is difficult to expect the effect of twisting by using the auxiliary yarn, that is, the effect of maintaining the filling structure.

After all, the one satisfying the optimum condition as the auxiliary yarn is one having a thickness of about one-third or less of the warp and weft yarn selected from carbon fiber yarn, polyramide fiber yarn, glass fiber yarn, vinylon fiber yarn and the like. .

The size of the mesh composed of the warp and the weft is determined according to the application. For example, 10 when used to reinforce mortar
It is preferably about 20 to about 20 mm, and about 30 to 150 mm when used for strengthening concrete.

The mesh fabric of the present invention can be easily manufactured by using a heddle heddle in a weaving operation.

It is possible to supply the thermoplastic polymer yarn together with the warp yarn and / or the weft yarn for weaving, and after the weaving, melt the melted yarn to stop the adhesion at the intersection of the warp yarn and the weft yarn.

As the thermoplastic polymer thread, a thread made of a low melting point thermoplastic polymer such as copolymerized nylon or polyester can be used.

Such a woven fabric of the present invention can be used as it is, of course, before or after weaving, warp yarns, weft yarns, auxiliary yarns, or woven fabrics, nylon resin, polyester resin, polyetheretherketone resin Apply a thermoplastic resin such as polyphenylene sulfide resin, a thermosetting resin such as epoxy resin, unsaturated polyester resin, phenol resin, or a solidifying agent such as cement paste by coating or impregnation, and use after curing the whole. You can also

(Example) Hereinafter, description will be given with reference to the drawings.

1A and 1B are warp yarns, 2A and 2B are weft yarns, and carbon fiber yarns having the same thickness are used in both.

 The warp and weft have a plain weave structure structure.

3A and 3B are auxiliary yarns, which are extended around the warp yarns 1A and 1B and are entwined with the weft yarn by a twist structure.

The positional relationship of each yarn at the intersection of the warp yarn and the weft yarn is as follows.

At the intersections of the warp yarns 1A, 1A ... And the warp yarns 2A, 2A ..., the warp yarns 1A, 1A ... Are positioned above the weft yarns 2A, 2A ..., and the auxiliary yarns 3A, 3A. 2A, 2A ... goes through the lower side and is entwined with the right side of warp 1A, 1A.

At the intersections of the warp threads 1B, 1B ... And the weft threads 2A, 2A ..., the warp threads 1B, 1B ... are below the weft threads 2A, 2A ... and the auxiliary threads 3B, 3B ... are the weft threads 2A, Above 2A ...

At the intersections of the wefts 1A, 1A ... And the wefts 2B, 2B ..., the wefts 2B, 2B ... are located above the warp 1A1A ..., and auxiliary yarns 3A, 3A ... It is located without getting entangled in the wefts 2B, 2B ....

At the intersections of the warp yarns 1B, 1B and the weft yarns 2B, 2B ..., the weft yarns 2B, 2B ... are below the warp yarns 1B, 1B ..., and further below the auxiliary yarns 3B, 3B ...・ It is located without being entangled.

The warps 1A, 1A ... are above the wefts 2A, 2A.
The wefts 2B, 2B ... cross below.

Auxiliary yarns 3A, 3A ... intersect the weft yarns 2A, 2A ... Below, and warp yarns 1A, 1A ... and weft yarns 2A, 2A.
・ Hold.

Auxiliary yarns 3A, 3A ... cross over wefts 2B, 2B ... while warp yarns 1A, 1A .. Change the position and convert from right to left and left to right. Therefore, auxiliary threads 3A, 3A ...
· Indicates warp yarns 1A, 1A for the first weft yarns 2A, 2A
..To the right of, and for the second weft threads 2A, 2A ...
Tighten the weft threads 2A, 2A ... with the warp threads 1A, 1A ... under the weft threads 2A, 2A.

The auxiliary yarns 3B, 3B ... are between the auxiliary yarns 3A and 3A,
If 3A is above 2A and 2B, 3B is located below, if it is below, it is located above, so that wefts 2A and 2A are tightened with warp 1B, 1B.

In the example of the drawing, the warp has 72,000 single fibers (single fiber diameter: 7μ
m) was used and the same was used for the weft. The arrangement of warp and weft is 0.85 per inch.

As the auxiliary yarn, 1420 denier polyaramid fiber yarn was used.

The thickness of the polyaramid fiber yarn was 1/30 of that of the carbon fiber yarn, and the dry heat shrinkage ratio at 200 ° C. was 0.18%.

(Effects of the Invention) The mesh fabric according to the present invention is mainly composed of carbon fibers having strong characteristics, and the carbon fiber threads have a plain weave mesh structure, so that the threads are arranged symmetrically in the thickness direction. Therefore, even if it is impregnated with a thermosetting resin, it is possible to prevent the warp that tends to occur during curing.

Furthermore, the mesh woven fabric hardened with a resin can be expected to have a high fixing effect when it is used to reinforce an inorganic material such as a cement material due to the suitable size of the threads.

Further, the weft is twisted with a thin auxiliary yarn, and the weft is sandwiched between the warp and the auxiliary yarn from above and below at the intersection of the weft and the warp to hold the weft sufficiently, so that the eyes are strong,
It is possible to prevent bending of the weft yarn, which tends to occur during impregnation of the thermosetting resin. Therefore, various characteristics of the carbon fiber such as strength and elastic modulus can be sufficiently exhibited.

Further, in the present invention, since the main material is composed of carbon fiber, it is suitable for reinforcing inorganic materials such as cement, mortar, concrete, etc., which exhibit excellent alkali resistance.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing a mesh fabric according to an embodiment of the present invention. 1A: Warp 1B: Warp 2A: Weft 2B: Weft 3A: Auxiliary yarn 3B: Auxiliary yarn

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI technical display location D03D 19/00 (56) References JP-A-63-55146 (JP, A) JP-A-63- 197751 (JP, A) JP 2-243547 (JP, A) JP 63-111045 (JP, A) JP 63-22636 (JP, A) JP 61-19833 (JP, A) Actual Kaihei 2-106477 (JP, U)

Claims (2)

[Scope of utility model registration request] 1. A reinforcing mesh fabric of an inorganic material, wherein a warp and a weft composed of carbon fiber yarns have a plain weave mesh structure and are woven with auxiliary yarns extending along the circumference of the warp. 2. The mesh fabric for reinforcing an inorganic material according to claim 1, wherein an auxiliary yarn thinner than the carbon fiber yarn is used.