JPS59125689A - Electric laminated board - 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 [Technical Field] The present invention belongs to the field of electrical laminates for multilayer printed wiring boards used in electronic equipment, electrical equipment, computers, computers, and the like.

[Background technology]

Conventional electrical laminates are made of phenolic resin, epoxy resin,
Paper, resin varnish for laminates such as unsaturated polyester resin, etc.
It is made by layering the required number of impregnated and dried prepreg sheets on a laminate base material such as cloth or galanu cloth, and then placing metal foil on the bottom surface depending on the need for safety. However, this has been a problem as delamination may occur during punching and drilling when processing laminates.

[Purpose of the invention]

An object of the present invention is to provide an electric/vapor phase four-layer board with excellent interlayer adhesion.

[Disclosure of the invention]

The present invention is an electrical laminate characterized by using a surface-glazed aromatic polyamide fiber/glass fiber nonwoven fabric as a base material for the laminate, and the present invention will be described in detail below. The resins for laminates used in the present invention include phenolic resin, cresol resin, epoxy resin, unsaturated polyester resin, melamine resin, polyimide, polybutylene, gonine, polyamide, polyamideimide, polynulfon, polybutylene terephthalate, and polyether. etherke 1
For laminates, fluorocarbon resins, fluorinated resins, etc. are used alone, modified products, and mixtures, and if necessary, solvents such as water, methylalfur, acetone, cyclohexanone, and styrene are added to adjust the viscosity. The base material used is a nonwoven fabric made of aromatic polyamide fibers and glass fibers whose surface has been plasma treated to improve adhesion.The aromatic polyamide fibers and glass fibers can be twisted, twisted, or Although any mixer may be used, it is preferable to use a combination twist amount that reduces variation. Although only one piece of the above-mentioned nonwoven fabric may be used, it is preferable to use a plurality of pieces from the viewpoint of reducing thickness variations.

Example: The surface of a 086-〇 twisted nonwoven fabric with a thickness of 086-0, consisting of aromatic polyamide interfiber weight parts and glass fiber heavy foot parts, was subjected to plasma treatment, and then impregnated with a curing agent-containing epoxy resin to a resin power weight percentage. A laminate in which 35 micron thick copper foil was layered on the top and bottom of three dried prepreg sheets was sandwiched between molding plates and laminated for 120 minutes at a molding pressure of 60°C to a molding temperature of 165°C to form a laminate with a thickness of 1. ．．
A six-layer electrical laminate was obtained.

Conventional Example Except that the twisted nonwoven fabric with a thickness of 0.86 wtr was used without plasma treatment, it was treated in the same manner as in the example, and the thickness was 1.
．． A 6M electrical laminate was obtained.

〔Effect of the invention〕

As is clear from Table 1, the results of testing the adhesion strength between 1 μm of the K1-layer plates for friendly forces obtained in the Examples and Conventional Examples are clearly shown in Table 1. The superiority of electrical laminates was lauded.

Table 1

Claims (1)

[Claims] An electrical laminate made by laminating and molding a laminate in which a required number of prepregs are impregnated with a laminate resin and dried into a laminate base material, and if necessary, a metal foil is placed on the bottom surface of the laminate. An electrical laminate characterized in that a surface plasma-treated aromatic polyamide fiber/glass fiber nonwoven fabric is used as a base material for the laminate.