JPS61202824A - Manufacture of stereostructural material - Google Patents

Abstract

PURPOSE:To enable giving or rigidity and inexpensive and efficient manufacturing, by making use of a string material of prepreg of ultraviolet curing resin. CONSTITUTION:As for an ultraviolet curing resin composite 1, a compound having a photopolymerizing group other than epoxy resin, for example, the compound having acriloyl, methacryloyl and acetylene unsaturated group can be mentioned. This ultraviolet curing resin composite 1 is put into an impregnation tank 10 in a room where ultraviolet rays are not available, a base material 12 composed of a material transmissible to ultraviolet rays is fed into the impregnation tank 10 while the same is being heated by a heating device 11, then the impregnated base material 12 is fed while mold release paper 13 is being applied to the backside of the base material 12, which is wound into a coil-like state and made into prepreg 6. Then the prepreg 6 is made into a large number of stringlike materials 6a, 6b... by slicing the same, to which ultraviolet rays are irradiated by making them into stereostructural materials through weaving and knitting and they are made to cure in a short period of time.

Description

[Detailed description of the invention] [Industrial application field] The present invention is a bag of nets and sieves made of a synthetic resin composition.

This relates to a method for manufacturing three-dimensional knitted bodies, three-dimensional woven bodies, or other three-dimensional structures such as whistles, biku, Yt, etc., such as covers for grill outlets, dust removal in water and sewage systems,
It provides pickling baskets, decorative bodies, etc. for plating.

[Conventional technology]

The above Noh is generally made of bamboo, wire, etc.
That organization! 1i1 work requires a lot of manpower and time,
It had the disadvantage of being expensive. In addition, items knitted with yarns made of synthetic resin compositions lack rigidity and have been limited to flexible bags and the like.

[Problem that the invention seeks to solve]

The present invention solves this problem by using prepreg strings made of ultraviolet curable resin, thereby eliminating the above drawbacks and providing a rigid three-dimensional structure.

[Means for solving problems]

The present invention consists of constructing an uncured prepreg from an ultraviolet curable resin composition, forming a large number of strings from this prepreg, combining them to form a three-dimensional structure, irradiating this three-dimensional structure with ultraviolet light, and Three-dimensional structures are manufactured by curing prepreg strings.

In the present invention, prepreg does not necessarily mean impregnated prepreg, but also includes chopped strand sheet compounds and the like. This chopped strand sheet compound is made by interposing chopped strands between two resin films coated with an ultraviolet curable resin composition and pressing them into a sheet (in this case, chopped strands are pressed into a sheet). (The strands may be matted)
Alternatively, it may be a sheet formed by kneading chopped strands and an ultraviolet curable resin composition and extruding it onto a resin film.

In the embodiment, this prepreg is made of epoxy resin, but prepreg made of resin such as unsaturated polyester may also be used. In addition, the above-mentioned ultraviolet curable resin composition includes a compound having a photopolymerizable group in addition to the epoxy resin, such as an acryloyl group, a methacryloyl group, an acrylamide group, a maleic acid diester group, an allyl group, a vinyl ether group, a vinyl amino group, Examples include compounds having a glycidyl group, an acetylenically unsaturated group, and the like.

[For production]

The prepreg string made of the above-mentioned ultraviolet curable resin composition cures within 1 minute after being irradiated with ultraviolet rays, so it has good workability and can be incorporated into an automatic production line, making it suitable for mass production and equipment. It is also inexpensive.

〔Example〕

The ultraviolet curable epoxy resin composition 1 as shown in the first diagram is prepared by mixing an epoxy resin 2, an epoxy resin 3, and an organic silicon compound 4 at 100°C, and adding a photocuring catalyst 5 to the mixture at 100°C. It is a mixture of

The above resins 2, 3. The materials and mixing ratio of compound 4 and catalyst 5 are as follows.

■Ultraviolet curable epoxy resin composition 1 ・Resin 2: 12 parts by weight of Epicoat 828 (oiled shell epoxy ■, bisphenol A type epoxy tMyt=>・Resin 3: Epicoat 1001
48 parts by weight (-〃〃) Compound 4: KBM 202 2 parts by weight <4fJa Kagaku Kogyo, 5 phenyldimethoxysilane)
- Photo-curing catalyst 5: UVE-10140, 6 parts by weight (General Electric Co., propylene ponate 50% solution of tri-7lylsulnenium salt) The above ultraviolet curable epoxy resin composition 1 was mixed into prepreg 6.
In order to do this, it is placed in an impregnating tank 1o in a room without ultraviolet rays as shown in the second diagram, and the impregnating tank 10 is heated to about 100 t by a heating device 11 while roving.
A base material 12 made of a material that transmits ultraviolet light, such as a cloth, is sent into an impregnating tank 10, and then a release paper 13 is applied to the back side of the impregnated base material 12, and the product is wound into a coil shape. It is.

Examples of the material for the base material 12 include the following.

■Glass fibers (there are various processing forms; for example, a surface mat as a single fiber cloak, a strand as a long fiber cloak), ■Organic fibers (synthetic fibers such as linear polyester, nonwoven fabrics of synthetic fibers), etc. are used.

The surface of the prepreg may be in any desired state, such as dry and dry, sticky or sticky, or an intermediate state thereof.

Next, to manufacture a three-dimensional structure, the prepreg 6 is sliced into multiple strings 6a, 6a, . . . as shown in FIG. 3(A), as shown in FIG. 3(0). Furthermore, prepreg 6
If the base material 12 is formed into a string instead of slicing, the string 6a can be obtained immediately without slicing. Next, these strings 6a are woven or knitted as shown in FIG. 3(C) to form a three-dimensional structure 20 as shown in FIG. 3(D). (Then, when ultraviolet NiA 21 is irradiated from the outside of the three-dimensional structure 20 as shown in FIG.
, 6a... cures in a short time of - minutes or less,
A predetermined three-dimensional structure can be obtained.

Dispensing A hemispherical dragon was manufactured using the following materials.

■Ultraviolet curable epoxy resin composition l Resin 2; Epicoat 828 12 parts by weight (oiled shell epoxy ■, bisphenol A type epoxy tree Y1 Resin 3: Epicoat 1001 48
Parts by weight (〃〃〃) Compound 47 KBM 202 2 parts by weight (
Shin-Etsu Chemical Co., Ltd., diphenyldimethoxysilane)/photocuring catalyst 5: UVE-10140, 6 parts by weight (50% Neral Electric Co., Ltd., triarylsulnenium salt propylene carbonate 50% i? &) ■ Base material 12
PS 240PE (roving, Nitto Boseki) ■ Shape of the basket Diameter 100φ, thickness 5011 ■ Curing conditions Ultraviolet rays with an intensity of 40 mW/d were irradiated for 30 seconds.

■Effects By using the above-mentioned ultraviolet-effect prepreg, it was possible to efficiently mold an FRP molded article with stitches, which had not been possible until now.

〔effect〕

As described above, according to the present invention, it is possible to move a three-dimensional structure made of a resin composition, and when this three-dimensional structure is irradiated with ultraviolet rays, the prepreg strings are cured in a short time, improving workability. It is good, has low equipment costs, and is suitable for mass production.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the method for manufacturing the ultraviolet curable resin composition in the present invention, FIG. 2 is an explanatory diagram of the method for manufacturing the prepreg, and FIG. )
FIG. 1 is an explanatory diagram sequentially showing each step of an embodiment of the method of the present invention. 1... Ultraviolet curable resin composition, 6...
・Prepreg, 6a... String, 20...
- Three-dimensional structure, 21... Ultraviolet rays. Note 1-)jJ-2nd Buddha 3rd Circle (8) (Hora

Claims (1)

[Claims] An uncured prepreg is constructed from an ultraviolet curable resin composition, this prepreg is formed into a number of strings, and these are combined into a three-dimensional structure, and this three-dimensional structure is irradiated with ultraviolet rays to cure the prepreg. A method for manufacturing a three-dimensional structure by hardening strings.