JPS59125690A - 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, 9A calculators, computers, and the like.

[Background technology]

Conventional electric 1m board is made of phenol resin, epoxy 1
Layer the required number of sheets of prepreg that has been stirred and dried with a resin face for laminate boards such as copper fat or unsaturated polyester resin into a base material for laminate boards such as paper, cloth, or glass cloth, and if necessary,
It is made by laminating and molding a laminate with metal foil placed on the bottom surface, but there is a strong demand for higher density, multilayer, and faster calculation performance for multi-layer printed wiring boards (which cannot be met with conventional materials). [Object of the Invention] The object of the present invention is to provide an electrical 4-layer board for a multilayer printed wiring board that is high in density, multi-layered, and excellent in high-speed operation.

[Disclosure of the invention]

The present invention is an electrical laminate characterized in that a surface plasma-treated aromatic polyamide fiber cloth is used as a part of the base material for the laminate, and the present invention will be described in detail below. The resins for laminates used in the present invention are phenolic resin, cresol resin, epoxy resin, unsaturated polyester resin, melamine resin, polyimide, polybutadiene, polyamide, polyamideoid, polysulfone, polybutylene terephthalate, polyether ether ketone, and fluorinated resin. alone, modified products, etc.
A mixture is used, and if necessary, a solvent such as water, methyl alcohol, acetone, cyclohexanone, or styrene is added to adjust the viscosity.As a base material for the JL board, glass, amorphous fibers such as asbestos, or polyester are used. , polyamide, polyvinyl alcohol, acrylic, and other organic synthetic fibers, as well as cotton and other natural fibers. It is necessary to use a plasma treated aromatic holamide fiber fabric. The surface plasma-treated aromatic polyamide fiber cloth can be disposed at any position on the laminate base material, but it is preferably disposed on the outermost side of the laminate base material. In other words, there is a tendency for the dielectric constant required for curdle speed operability to be less than 4×10 Hz. Further, the number of arranged numbers is not particularly limited, but it is preferable to use mantissa sheets.

Example .

A prepreg (hereinafter referred to as Prepreg A) is prepared by impregnating a glass cloth with a thickness of 00180 mm with an epoxy resin containing a curing agent at a resin amount of 50% by weight (hereinafter simply referred to as "Resin") and drying it.
f) Apply the above curing agent-containing epoxy resin to the top and bottom surfaces of four sheets of surface plasma-treated aromatic polyamide fiber cloth (manufactured by DuPont, product name: Kevlar cloth, whose surface has been plasma-treated) with a thickness of 0.181. The impregnated and dried prepreg was layered one by one so that the amount of prepreg was 50%, and one layer of steel 'ia was layered on the outermost layer, and the molding plate was sandwiched between molding plates at a molding temperature of 165°C and a molding pressure of 60%. Lamination molding was carried out for 120 minutes to obtain an electrical laminate having a thickness of 1.6 mm.

[Conventional example]

An electrical laminate with a thickness of 1.6 m was obtained by processing in the same manner as in the example except that a J-piece was used in which 86 sheets of the same prepreg as in the example were stacked and copper foil was layered on the bottom surface. [Effects of the Invention] The results of testing the electrical laminates obtained in the actual and conventional examples show that the dimensional stability of the electrical laminate of the present invention is excellent, as is clear from Table 1. 4. It is possible to deal with increased density and multilayering, and the dielectric constant can be reduced to 4 x 1 oz., which improves business performance. This is something we have been dealing with.

Table 1

Claims (1)

[Claims] Product) M Machine base material is impregnated with core R-plate resin, the required number of dried prepregs are layered, and if necessary, a metal foil is placed on the bottom surface to form a laminated product. 1. An electrical laminate, characterized in that 8 uses a surface plasma-treated aromatic polyamide fiber cloth as a part of the laminate base material.