JPS60222233A - But adhesion of frp material - Google Patents

Abstract

PURPOSE:To elevate the strength at adhered part by bringing only glass fibers outside from the periphery of FRP molded pieces to fill the lap part with a resin after the overlapping of glass fiber of one FRP molding piece with that of the other. CONSTITUTION:Only glass fibers 3 are brought outside by a proper length from the periphery of one FRP mold piece 1 and the other 2. Glass fibers 3 and 3 are overlapped between both the FRP molding pieces 1 and 2. A warp 5 is put on the lap part 4 and a resin 6 such as plastic agent is made to fill the lap part 4. The possible presence of glass fiber 3 even at the lap part 4 enables the mutual but adhesion of FRP molding pieces 1 and 2 without the lowering of the strength at the part.

Description

[Detailed description of the invention] The present invention relates to a method for butt bonding FRP materials.

When butt-bonding, for example, FRP plates, conventional methods include bringing the end faces of this plate and another plate into contact with each other, and bonding the abutting portions with adhesive. However, in this construction method, there is a problem that since the Ifi class fiber is not present in the bonded part, the strength of this bonded part is inferior to other parts.

Therefore, an object of the present invention is to increase the strength of the bonded portion to a sufficient level.

In order to achieve this objective, the present invention brings out only the glass fibers from the periphery of the FRP molded piece and connects them to other FR
After wrapping the P-molded piece with the class fiber, the wrapped part is filled with resin. Therefore, if the class fiber is present also in the lapped part, that is, the bonded part, the strength of the bonded part will be reduced. This means that the FRP molded pieces can be butted and bonded to each other without lowering the temperature.

The present invention will be explained below using examples. Figure 1~gl!
In Figure 12, (1) is one FRP molded piece to be butted and bonded together, (2) is the other FRP molded piece, and the class fiber (3) is attached from the periphery of each molded piece (1) and (2). The chisel is extended outward at an appropriate length. FRP like this
When molded pieces (1) and (2) are butted and bonded together, as shown in Fig. 1, the class fibers (3 bars 3) of both FRP molded pieces (1) and (2) are lapped together,
Apply the warp threads (5) to this wrap part (4), and then
As shown in the figure, this wrap portion (4) may be filled with a resin (6) such as a plastic agent. In this way, the glass fiber (3) can be present even in the lap part (4), that is, the adhesive part, so the FRP molded pieces (1) and (2) can be butted against each other without reducing the strength of this part. This means that it can be glued.

Next, the present invention will be described in detail regarding the case where the FRl) layer is formed over the entire inner surface from the inside of the old pipe.

In such cases, the objectives can be bone reinforcement, liner construction, water stoppage effect, etc. For water supply pipes, aging pipes can be rehabilitated, and for sewage pipes,
Measures can be taken to prevent infiltration of water and hydrogen sulfide.

Figures 8 to 6 show the first application example, in which an FRP pipe (7) with a larger diameter than the old pipe is installed in the circumferential direction as shown in Figure 8 (a).
Cut it off at a certain point, and push it into the old pipe (8) as shown in Fig. 5 with the rolled-up shape as shown in Fig. 8 (b).
), it is loosened inside the old pipe (8) and then attached to the old pipe (8) using the elastic restoring force of FRP. In addition, hook (9) 4 as shown in Fig. 4 should be connected to # of FRP pipe (7).
It is convenient to stick the hooks (9) to the four parts and the inner circumferential part, respectively, and to engage the hooks (9) when rolling and thinning as shown in FIG. 8(b). As shown in Figure 8(c), the old pipe (8
), if the FRP pipe (7) is inserted, the joint Qη
Butt and glue using the method described above. FIG. 6 is a perspective view showing when adhesion is completed.

Figure 7 shows the second application example, in which the FRP continuous plate (
2) is glued in a spiral shape to the inner surface of the old pipe (8), and the joints (ends) are butted and glued together using the method described above.

FIG. 8 shows the eighth application example, and in this example, FRP
The plate α◆ is formed into a tile shape and is adhered to the inner surface of the old pipe (8). (to) is a seam.

9 to 10 show a fourth application example. In this example, the FRP pipe (G) is divided into a plurality of parts in the circumferential direction, and the glass fibers (G) in the divided part α71 are joined to each other to make them continuous, and when inserted into the old pipe (8), both figures ( This class fiber (
g) By elastically deforming the pipe, the FRP pipe (g) is folded into a small size. Once inserted into the old tube (8), the FRP tube (6) is adhered to the inner surface of the old tube (8) as shown in both figures (b), and then the class fiber (end) part is filled with resin. 'fJ9 figure shows FRP 'fi (to) 8 in the circumferential direction.
It shows the case where it is divided, and FIG. 10 shows the case where it is divided into four. In this way, since the divided portion can be made continuous, it becomes easier to handle the pipe when it is pushed into the old pipe (8).

[Brief explanation of the drawing]

FIG. 1 is a plan view of an embodiment of the present invention, FIG. 2 is a front view thereof, and FIGS. 16 is a diagram showing a first application example of the present invention, FIG. 7 is a diagram showing an application example of 962 of the present invention, FIG. 8 is a diagram showing an eighth application example of the present invention, and FIGS. % lo
The figure is a diagram showing a fourth example of application of the present invention. (1) (2)... FRP molded piece, (3) (to)...
・Class fiber, (4)...Wrap capital (adhesive part),
(5) Warp yarn, (6) Resin agent Yoshihiro Morimoto Figure 1 Figure 2 Figure 3 (a) (b) (C) Figure 4 Figure 6 Figure 7 Figure 8 Figure 9 (a) Figure 10 (a) (b) (b)

Claims (1)

[Claims] 1. Butt adhesion of spruce material, characterized in that only the class fibers are brought out from the periphery of the FRP molded piece, this is wrapped with the class fibers of other FRP molded pieces, and then this wrapped part is filled with resin. Method.