JPH01123740A - Laminated plate for electric use - Google Patents

Abstract

PURPOSE:To obtain a laminated plate for electric use having large strength and which can be punched, by laminating a given number of resin-impregnated glass cloths onto the upper and lower surfaces of a given number of base materials impregnated with a resinous solution including a hollow filler, and further laminating at the upper and/or lower surfaces thereof a lamination member attached with a metallic foil. CONSTITUTION:A shirasu balloon is added as a hollow filler to a resin varnish composed mainly of epoxy resin, within the range of 1-50wt.% with respect to the epoxy resin. Then, the resin varnish added with the shirasu balloon is impregnated into a non-woven glass fabric and dried in a manner that the resin amount after drying is 45wt.%. On the upper and lower surfaces of five base materials obtained as described above through impregnation with the resin including the hollow filler, dried glass cloths which are impregnated with resin varnish composed mainly of epoxy resin in a manner that the resin amount after drying is 50wt.% are overlapped one by one. Then, a lamination member attached with a copper foil is heated and layered on the upper and lower surfaces thereof to obtain copper copper-clad a laminated plate and able to be punched.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an electrical laminate used for "W", airway single-word child equipment, computing equipment, and communication equipment 6.

[Background technology]

Conventionally, electrical laminates are obtained by stacking a required number of resin-impregnated paper or resin-impregnated glass substrates, and then forming a laminate with metal foil on the top and/or bottom surfaces. The former has the advantage of being able to be punched, although its strength is low because it is made of paper, while the latter has the advantage of being able to be punched because it is made of glass cloth, while the latter has the advantage of being able to punch holes because it is made of glass cloth. Ta.

: [Object of the invention] The object of the invention is to have high strength and be able to be punched. ! Our goal is to provide the Kiyo@M board.

[Disclosure of the invention]

The present invention involves laminating and molding a 'WIWII' body in which a required number of resin-impregnated glass cloths are layered on the upper and lower surfaces of a resin-impregnated base material containing a hollow filler, and metal foil is further arranged on the upper and/or lower surfaces. Because it is a WIH board for electrical use, its strength comes from the circumference of the m-lipid-impregnated gubbed cloth on the top and bottom surfaces, and the punching workability comes from the hollow filler-containing resin-impregnated base material interposed between the resin-impregnated glass cloth on the top and bottom surfaces. This invention was able to greatly improve punching properties, and the present invention will be described in detail below.

The hollow filler-containing resin base materials used in the present invention include hollow fillers such as shirasu balloons, glass balloons, pearlite, and vermiculite. Resin, melamine resin, polyimide resin, polygetadiene resin, polyamide resin, fluorinated resin, polyphenylene oxide w fat, polyphenylene sulfide resin, polybutylene terephthalate resin, polyethylene terephthalate resin, etc. alone,
A resin liquid contained in a mixture, modified product, etc. is impregnated into a base material such as woven fabric, nonwoven fabric, glass paper, synthetic fiber woven fabric or nonwoven fabric, or paper. The amount of hollow filler is preferably 1-4:)rLf! to resin. % (hereinafter simply referred to as %) is desirable. That is, if it is less than 1%, the punching property improves, but if it exceeds s<50%, the permeability to the base material decreases, and the tgC insulation properties and water resistance tend to decrease75. The resin-impregnated glass cloth is obtained by impregnating a glass cloth base material such as a glass woven cloth, a glass non-woven cloth, or a lath paper with the above-mentioned resin. Copper as metal foil,
Aluminum, iron, stainless steel 1. A metal foil such as LC brass, nickel, or zinc is used, but if necessary, an adhesive layer can be provided on one side of the metal foil to improve adhesiveness. For lamination molding, multi-stage press method, double belt method, multi-roll method, no-pressure method, etc. are used, and the heating temperature and heating time are depending on the resin used, and the pressure is also no-pressure depending on the resin, and the laminate's own weight. Self-weight pressure, contact pressure, low pressure, and high pressure are used, and are not particularly limited.

The present invention will be explained below based on examples.

Example epoxy resin (manufactured by Vell Chemical Co., Ltd., product: Meiko Pico)
) 10013100 parts by weight C), 4 parts of dicyandiamide, 70.2 parts of benzyldimethyl 7, 10 parts of balloon, methyl oxide $/)-A/Zo
On the top and bottom surfaces of five hollow filler-containing resin-impregnated substrates obtained by impregnating a glass nonwoven fabric with a thickness of 0.2H with a resin varnish consisting of part o so that the resin amount after drying becomes 45%, and drying the resin varnish, Epoxy resin (VC/I/manufactured by Kagaku Co., Ltd., trade name Epicote 10017, 100 parts, !/Vandiamide 4 parts,
0.2 parts of benzyldimethylamine, methylokinto f
After drying, impregnate a glass cloth with a thickness of 0.2 B with a resin varnish consisting of 1/100 parts so that the amount of resin becomes mH, and then dry the resulting resin-impregnated glass cloth. The laminates each having a copper foil with a thickness of 0.035111 placed on the lower surface were laminated under a molding pressure of 9/14 at 165°C for 120 minutes to obtain a double-sided steel-clad laminate with a thickness of 1.6 mm. .

Comparative Example A laminate consisting of 7 sheets of resin-impregnated glass cloth with the same resin content ω% as in the example and with steel foils each having a thickness of 0.035 ff placed on the top and bottom surfaces was molded at a pressure of 40 kgm and at 16 s°C for 120 minutes. A double-sided steel clad laminate having a thickness of 1.6H was obtained by lamination molding.

〔Effect of the invention〕

As is clear from Table 1, the performance of the laminates of the Examples and Comparative Examples was good, confirming that the electrical laminates of the present invention were superior.

Chapter 1 Table

Claims (1)

[Claims] (1) The required number of resin-impregnated glass cloths are layered on the upper and lower surfaces of the required number of hollow filler-containing resin-impregnated base materials, and a laminate is formed by laminating and molding a laminate in which metal foil is further arranged on the upper and/or lower surfaces. An electrical laminate board characterized by: