JPS58197042A - Core material for FRP - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] My most recent work concerns core materials for FRP.

FRP is widely used as panel members, light and heavy FRP hulls, and hybrid materials for construction of Teratani-koshi. When a high strength is required, it is necessary to increase the stiffness of the FRP structural member, but increasing the thickness causes problems such as the weight being increased and molding distortion easily occurring. In order to solve this difficulty, sandwich bars with yRPq integrally mounted on both sides of the lightweight core material are separated.

However, compared to a homogeneous IIRP board of the same type, the sandwich binder has a lower force and strength, and is prone to peeling between the core material and the surface material (FRP forming the surface). There is.

The present invention is the result of research to provide an FRP core material that is strong, lightweight, easy to manufacture, has good adhesion between the surface material and the core material, and does not cause peeling. This is a great proposal.

Next, the present invention will be explained in more detail.

In the present invention, jO~/! ;OL9/Shinbou 1 Shikui
1-Igo ~ / 20 Takumi / A mat made of a glass material with a high density and filled with a porous material made of a mixture of a heat radiation resin and a filler is used.

As Akiko textile powder, 73~ drawn from Butsungu
Adding a sizing agent to glass fibers of about 23μ,! θ~200
The weight per 7,000m is 20~2! Of
It is convenient to use the same one. The resulting O-zi fibers (4.7 glass fibers) can be used to make the -h-i mat, or they can be rolled up as a cake and then rewound to produce Matsutra silk. can.

A glass fiber mat is produced by supplying a bundle of glass pheasants to a predetermined thickness onto a conveyor.

Release the mold to the glass tip. 7 is an uncut continuous piece or / m
Preferably, by using a long piece with a length of 2 m or more, it is possible to easily make four pieces of the above-mentioned range of strength, and a core material using such a glass matte metal. ?
By using it, very favorable results can be achieved.

A relatively short cut of about 70 to 30 cm (70 to 30 cm) was made (). When using the end of a child's group, it is easy to simply drop and deposit only the side fiber bundles on a running belt. The bulk density of the mat tends to be relatively large.

In this case, a suitable result can be obtained by simultaneously supplying the vitreous fiber bundle, a heat-transportable tree as described below, and the filler onto the belt.

In addition, the glass fibers pulled out from the bushing are wound on a reciprocating drum with a large diameter, and the cylindrical aggregate of working fibers wound on the drum is cut open and expanded into a plate shape to form a predetermined amount of $ha. Manufacture field glass φ+11 by pulling it up to 1ψ
, fiber pine) can also be suitably used as a core material.

As thermoplastic resins for polycyclized vinyl, resins, novola ivy type evokinte resin, resealable type phenolic resins, and amorphous polyester resins that do not contain crosslinking agents can be used, but crosslinking l, l k Free polyester resins provide particularly suitable melting methods.

As fillers, hollow glass globules, shirasu balloons, perlite, and pumice powder are useful, and hollow glass globules and shirasu balloons are particularly suitable for giving a foil.

The appropriate mixing ratio of thermoplastic@fat (as a solid content) and filler is 100'' in terms of weight ratio, in the range of 130 to g00.

A mixture of powdered thermoplastic resin and filler is supplied into the voids of the glass fiber mat by blowing, etc., and then heated to slightly soften the thermoplastic side and filler. Although the core material of the present invention can be produced by integrally combining the fibers, heat radiation properties, F fat, and filler, (7) Mix the filler with the resulting dispersion to form a yeast-like mixture, and impregnate a mat (7) evaporate the dispersion medium. I was able to use the core material τ for FRP.

Such a mixture can also be produced by the following method. Thermoplastic phase - For example, a dispersion prepared by adding surfactant I]τ to an unsaturated polyester resin without crosslinking agent, heating and mixing, and gradually adding water to invert and emulsify. A paste-like mixture consisting of a resin dispersion and a filler is created by adding a hollow probe globule or a mixture of the hollow probe globule and a white glass balloon as a filler and mixing with a mixer. be punished.

The weight ratio of the mixture of the glass fiber mat, the thermoplastic resin (as a solid content), and the filler is suitably 100, 30 to 30, preferably 100 to 770 to 3sO.

The FRP core material of the present invention suffers from the following problems due to the above-mentioned transverse waves.

The core material for Honkamei FR and P is integrally composed of glass-7 fiber mat with a small density, heat radiation 4-fiber 1 hayabe, and filler, and the gap between glass A9 fiber bundles is Since it is filled with a mixture of thermoplastic resin and filler, it has a large anti-compressive force.The core material for FRP according to the present invention? By using it, the anti-compressive force is increased, and the large F
RP? r: Can serve as a samurai. This effect is especially noticeable when using glass fibers such as cylindrical glass, hollow glass globules, lath balloons, etc.

The FRP core material of the present invention is flexible and can be stored in a roll and used for one day. Therefore, it is easy to pack and transport, and is convenient to use. The core material for FRP of the present invention has a scoop-shaped temple with a bent 7F in order to shoulder flexibility.
It is also suitable for RP mold construction.

Historically, since the mixture of the heat-reactive material and the filler formed by the core material for the uninvented FFIP has appropriate porosity, the following effects can be obtained.

Liquid thermosetting material I for core material core material surface hardening for FRP of the present invention
When the fiber-impregnated body (uncured FRP) impregnated with fat was put together, the above-mentioned pot fat seeped into the inside through the small pores in the above-mentioned mixture, and as a result, the core material was also layered on the surface. uncured FRP
As the core material hardens, the strength of the core material increases, and the surface FRP1 and the surface are strongly bonded, and sandwich panels that are squeezed often suffer from peeling.

Note that if the porosity in the mixture is too low, the penetration of the resin into the core material will tend to be opaque, and if the porosity is too high, the amount of resin impregnated into the core material will be small. Since the specific gravity of the product is high, it is appropriate that the porosity be in the range of 30 to 60% (excluding the volume of 1 part of the hollow).

As the Mokumachi Nozomi tree, polyvinyl resin, polyacrylic acid vinyl resin, novolac type phenol tree, acrylic ester, etc. can be used.
For FRP, it is most suitable to use unsaturated polyester fibers that do not contain any cross-linked material, and unplated FRP layered on the surface of the core material.
The crosslinking agent (styrene) in the core material penetrates into the core material, and the non-resilient polyester resin in the core material also hardens, making it possible to obtain a strong FRP.

In addition, uncut continuous 6P citrus bundles or long shinziwa bundles with a length of 7 m or more, 1 piece or 2 m or more should be piled to a constant thickness of F7T (7th, thermal radiation supervision) The transducer ζ fiber bundle f23 is placed on the surface of the porous body r element (formed in step 7 and above and below lT+4 of the glass bond fiber mat) made of a mixture of the fibers Φ°11 and the filler.
- 200 parts of chopped strands were cut into a matte shape and deposited to a predetermined thickness, formed by applying a binder of powdered polyester fibers to form a non-glass layer. It is also possible to use the core material 17 by needle bunching or by needle bunching organic fiber yarn or glass fiber yarn on the next surface.

This core material is three-dimensionally reinforced by needle bunching, so the FRP board molded using this core V has excellent strength against shearing force when subjected to one bending load. Also, even when the FRP surface material is subjected to a tensile load, the strength against internal shearing is also excellent.

Next, a non-inventive example will be shown.

Example: To a product prepared by adding 1 part of unsaturated polyester resin 93I' which does not contain cross-linking agent gold and 7 parts by weight of methyl enal ketone, 7 parts by weight of surfactant Mli was prepared.
The 70th military division, Seikaro [7, g O
~70℃ in the state of sword fever to 90℃
Gradually add warm water to a pot, invert and emulsify, and then add ammonia water and water to pH 9.3. 4 volumes of liquid (solid content: 20 parts) were made.

Dispersion D of unsaturated polyester resin containing no crosslinking agent
For 100 parts by weight, hollow glass pellets with a bulk specific gravity of 03.2 and glass with a bulk specific gravity of 0 g) were added in a ratio of 2:/ (
720 parts by weight of the light packaging material (bulk specific gravity 0..27) prepared by '#S@ were added and mixed in a mixer to produce a paste-like material.

Next, add a sizing agent to the glass fibers of f7/moxibustion fiber diameter/7μ by pulling them out from a button, and bundle them together.
The amount of troops per 1000rn is 0'? The series A; -7-t; was formed by stacking the 4' monument bundles in a curved manner.
= Pheasant mat (bulk density 100L9/m", mat thickness 44
Evening trick, unit weight 1.1! ;Oy/n? 2'), add the above paste-like mixture fmat/rr? "ksf), 2.0'
Wax coated with 10fk, dried veins are applied to reduce the pore size to 0.
09/n-? ) was manufactured.

Glass 1 fiber chopped strand mat (Asahi Fiber Class G4 CM Otsu 0 Yu FA,
Single star Otsu 009 / m2) τ layered laminated material with 7 cells polyester 10 (Showa polymer chemistry rules /, 57B
QT) curing catalyst (Permec N manufactured by Nippon Kaku)
After 7 days of thorough mixing, the mixture was applied using the no-no-dry-amp method, impregnated, defoamed, and heated to 2F.
A sandwich panel with a vitreous fiber content of 30 g in the FRP layer was molded by curing in an atmosphere of 7 g'% humidity at f°C. Table 7 shows the properties evaluated for this Sand German nano ζ panel.

Comparative example (/ Core material and 17 balsa (a wood of the Panya family produced in steel rice that is extremely abundant.Thickness 3.9L ratio IO3/) Ge1
I used it for 7 days.

Glass-hime chopped strand mat (Asahi Fiberglass G CM Otsu Q3FA, year m Otsu 00 II'/m2)'; C Valley one piece ti laminated material was applied to both the upper and lower surfaces of the above core material.Example A sandwich panel with a glass negative fiber shoulder content of 30% in an FRP shield was molded under the same conditions as /. The performance evaluated for this sandwich 2-piece is shown in Table 7.

Comparative example! As the core material, vinyl material (Funun Kaseiyo Hiniform, thickness: 5.2 cm, specific gravity: 0./) is used. No holes are used.

Kasuri chopped strand cloak (Asahi fiberglass g CM Otsu 0., =<-
FA, motorcycle 600 fl/m”) k Each one piece of FRP with the same condition as the example / on the laminated material with the city wall.
A sandwich molding film with a glass fiber content of 30% in the layer was prepared. The performance evaluated for this sandwich film is shown in Figure 1.

Table 7 Miseshiri / Comparison 1 / Comparison νsu! Enjoying the panel (ms, ) 7. ．． 27f
7. Specific gravity of Otsu panel 0. 〆f
0.7g 0.73 Core material for FRP with this explanation? The sandwich binder molded using the molded polyester alkyd I (σ) penetrates into the pores of the core material, and the penetrating resin is mixed with the D80 polyester alkyd I1 in the core material. Because it is chemically bonded, the adhesion between the core material and the narrow FRP layer is improved, and compared to sandwich panels formed using conventional core materials (valve, vinyl chloride x pet material), Bending +5?ljC is a dog.Also, the uninvented core material for FRP is a mixture of unsaturated alkyd and hollow inorganic grain fillers in the voids of the 6-strand fiber mat. Since the sandwich panel of the present invention is formed without using a core material, it has a bending elasticity that is more flexible than the conventional sandwich made with a metal core material. It is.

Special dispatcher: Representative of Asahi Fiberglass Co., Ltd. Representative: Yuan Hiromi, Fuji, and 7 others Shizukuimo□←

Claims (1)

[Claims] (1) High-pitched glass made of glass fiber mat. (4) A porous body made of a mixture of unsaturated polyester resin and filler containing no structural material was filled into the voids of the fiber mat. The core material for FRP is characterized by 0) The filling material is hollow and unreinforced grains.
A core material for FRP as stated in the claims.