摘要:
A nonwoven fabric cloth substrate for printed wiring boards containing aromatic polyamide fibers and having a 0.7-1.0 dynamic elastic modulus ratio (E' (250.degree. C.)/E' (30.degree. C.)) and a 0.05 or less loss tangent (Tan.delta.) peak value at 30.degree.-250.degree. C., and a prepreg and a printed wiring board using the nonwoven fabric cloth substrate.
摘要翻译:一种包含芳族聚酰胺纤维并且具有0.7-1.0动态弹性模量比(E'(250℃)/ E'(30℃))和0.05或更小的损耗角正切的印刷线路板的无纺布基底 Tan delta)峰值,以及使用该无纺布基材的预浸料坯和印刷线路板。
摘要:
A nonwoven fabric cloth substrate for printed wiring boards containing aromatic polyamide fibers and having a 0.7-1.0 dynamic elastic modulus ratio (E' (250.degree. C.)/E' (30.degree. C.)) and a 0.05 or less loss tangent (Tan .delta.) peak value at 30-250.degree. C., and a prepreg and a printed wiring board using the nonwoven fabric cloth substrate.
摘要翻译:一种包含芳族聚酰胺纤维并且具有0.7-1.0动态弹性模量比(E'(250℃)/ E'(30℃))和0.05或更小的损耗角正切的印刷线路板的无纺布基底 Tan delta)峰值,以及使用该无纺布基板的预浸料坯和印刷线路板。
摘要:
A connecting member of circuit substrates includes an organic porous base material provided with tackfree films on both sides, through-holes disposed at requested places which are filled with conductive resin compound up to the surface of the tackfree films. This structure enables inner-via-hole connection and can therefore attain a connecting member of circuit substrates and an electrical connector of high reliability and high quality. By using a connecting member of circuit substrates including the organic porous base material provided with tackfree films on both sides and through-holes disposed at requested places which are filled with conductive resin compound up to the surface of the tackfree films, it is possible to form a high-multilayer substrate easily from double sided boards or four-layer substrates which can be manufactured rather stably. In addition to that, since the conductive paste is filled up to the surface of the tackfree films, the conductive paste sticks out from the surface of the organic porous base material when the tackfree films are separated. As a result, the filled amount of the conductive substance increases after the lamination, and thus, the connection resistance is reduced considerably.
摘要:
A method of manufacturing an organic substrate used for printed circuits, which includes the steps of forming through-holes in a porous raw material provided with cover films and having compressive shrinkage, filling electro-conductive paste into the through-holes, separating the cover films from the porous raw material filled with the electro-conductive paste in its through-holes, applying metal foils onto the surfaces of the porous raw material from which the cover films have been separated, and compressing the porous raw material applied with the metal foils through heating and pressurization, whereby the electro-conductive substances in the electro-conductive paste are connected for electrical connection between the metal foils.
摘要:
A printed circuit board includes an uncured substrate material with closed voids which are disposed with a through-hole. When the through-hole is formed, voids which exist in the substrate material open from inner wall of the through-hole to form a hollow-shaped part. By filling the through-hole and the hollow-shaped part with conductive paste, the adhesion improves by the increased holding effect between the conductive paste and the wall surface of the through-hole.
摘要:
A connecting member of circuit substrates includes an organic porous base material provided with tackfree films on both sides, through-holes disposed at requested places which are filled with conductive resin compound up to the surface of the tackfree films. This structure enables inner-via-hole connection and can therefore attain a connecting member of circuit substrates and an electrical connector of high reliability and high quality.By using a connecting member of circuit substrates including the organic porous base material provided with tackfree films on both sides and through-holes disposed at requested places which are filled with conductive resin compound up to the surface of the tackfree films, it is possible to form a high-multilayer substrate easily from double sided boards or four-layer substrates which can be manufactured rather stably. In addition to that, since the conductive paste is filled up to the surface of the tackfree films, the conductive paste sticks out from the surface of the organic porous base material when the tackfree-films are separated. As a result, the filled amount of the conductive substance increases after the lamination, and thus, the connection resistance is reduced considerably.
摘要:
A printed circuit board includes an uncured substrate material with closed voids which are disposed with a through-hole. When the through-hole is formed, voids which exist in the substrate material open from inner wall of the through-hole to form a hollow-shaped part. By filling the through-hole and the hollow-shaped part with conductive paste, the adhesion improves by the increased holding effect between the conductive paste and the wall surface of the through-hole.
摘要:
A method of manufacturing an organic substrate used for printed circuits, which includes the steps of forming through-holes (3) in a porous raw material (2) provided with cover films (1) and having compressive shrinkage, filling electro-conductive paste (4) into the through-holes (3), separating the cover films (1) from the porous raw material (2) filled with the electro-conductive paste (4) in its through-holes (3), applying metal foils (5) onto the surfaces of the porous raw material (2) from which the cover films (1) have been separated, and compressing the porous raw material (2) applied with the metal foils (5) through heating and pressurization, whereby the electro-conductive substances in the electro-conductive paste are connected for electrical connection between the metal foils.
摘要:
A printed circuit board includes an uncured substrate material with closed voids which are disposed with a through-hole. When the through-hole is formed, voids which exist in the substrate material open from inner wall of the through-hole to form a hollow-shaped part. By filling the through-hole and the hollow-shaped part with conductive paste, the adhesion improves by the increased holding effect between the conductive paste and the wall surface of the through-hole.
摘要:
In a positive electrode for an alkaline storage battery, a layer is formed between a porous substrate as a core material and an active material including nickel hydroxide filled into the porous substrate. The layer includes an oxide containing cobalt and nickel and/or a hydroxide containing cobalt and nickel. In the hydroxide, the average of an oxidation number of a metal is more than +II. The layer has a high electric conductivity while keeping the high corrosion resistance. A utilization rate of the active material can be improved due to the high electric conductivity. An alkaline storage battery including such an electrode has a good cycle property.