摘要:
In a solder paste which is a mixture of a flux and low melting point metal particles, low melting point metal fine particles manufactured by a conventional method or apparatus therefor include particles having widely varying particle diameters. Accordingly, the solder paste could not completely fill the minute holes in a mask for application to minute solder portions by printing, or mask removability was poor. According to the present invention, a mixture of a heat resistant continuous phase liquid and coarse metal particles in molten state is passed through a porous membrane to form the coarse low melting point metal particles into fine particles with a predetermined diameter. An apparatus according to the present invention comprise a porous membrane between a heating and dispersing mechanism and a cooling mechanism, and a pressure vessel connected to the heating and dispersing mechanism for applying a high pressure to the heating and dispersing mechanism.
摘要:
In a solder paste which is a mixture of a flux and low melting point metal particles, low melting point metal fine particles manufactured by a conventional method or apparatus therefor include particles having widely varying particle diameters. Accordingly, the solder paste could not completely fill the minute holes in a mask for application to minute solder portions by printing, or mask removability was poor. According to the present invention, a mixture of a heat resistant continuous phase liquid and coarse metal particles in molten state is passed through a porous membrane to form the coarse low melting point metal particles into fine particles with a predetermined diameter. An apparatus according to the present invention comprise a porous membrane between a heating and dispersing mechanism and a cooling mechanism, and a pressure vessel connected to the heating and dispersing mechanism for applying a high pressure to the heating and dispersing mechanism.
摘要:
It is an object of the present invention to provide spherical metal particles having excellent monodispersity. The present invention relates to a method of manufacturing monodisperse spherical metal particles characterized by passing liquid metal through a porous membrane so as to disperse the resulting liquid metal particles in a continuous liquid phase.
摘要:
It is an object of the present invention to provide spherical metal particles having excellent monodispersity. The present invention relates to a method of manufacturing monodisperse spherical metal particles characterized by passing liquid metal through a porous membrane so as to disperse the resulting liquid metal particles in a continuous liquid phase.
摘要:
A monohydric-alcohol-containing emulsion that is more stable than prior art emulsions.An emulsion with tolerance to alcohol comprising a monohydric alcohol or a solution in a monohydric alcohol as a solvent; and an emulsifier; (1) the content of the monohydric alcohol or the solution thereof being 10 wt % or more, based on the total weight of the emulsion; (2) the content of the emulsifier being 0.1 to 50 wt %, based on the total weight of the emulsion; and (3) the emulsion being in the form of an O/W emulsion, W/O/W emulsion, O/W/O emulsion, or S/O/W emulsion.
摘要翻译:含有一元醇的乳液比现有技术的乳液更稳定。 具有醇的乳剂,其包含一元醇或作为溶剂的一元醇中的溶液; 和乳化剂; (1)一元醇或其溶液的含量相对于乳液的总重量为10重量%以上; (2)基于乳液的总重量,乳化剂的含量为0.1〜50重量% 和(3)乳液为O / W乳液,W / O / W乳液,O / W / O乳液或S / O / W乳液形式。
摘要:
It is an object of the present invention to provide spherical metal particles having excellent monodispersity. The present invention relates to a method of manufacturing monodisperse spherical metal particles characterized by passing liquid metal through a porous membrane so as to disperse the resulting liquid metal particles in a continuous liquid phase.
摘要:
It is an object of the present invention to close a slit as easily as possible while suppressing positional displacement of both end edge portions flanking the slit. A corrugated tube includes a corrugated tube body portion formed in a tubular shape in which annular projecting portions and annular recessed portions are alternately formed in a longitudinal direction and a slit is formed in a longitudinal direction; a plurality of first extended pieces provided on one side of both side edge portions flanking the slit in the corrugated tube body portion; and a plurality of second extended pieces provided on the other side of both the side edge portions. The slit is closed in a state where the plurality of the first extended pieces and the plurality of the second extended pieces are disposed on an inner circumferential side of the corrugated tube body portion at different positions.
摘要:
The invention provides monodisperse single emulsions which have a mean emulsion particle size within the range of 0.3 to 40 .mu.m and are substantially free of emulsion particles having a particle size smaller than 50% of the mean particle size, double emulsions which have a mean emulsion particle size within the range of 0.3 to 40 .mu.m and whose internal phase concentration is controlled substantially uniformly within the range of 1% to 70%, and methods of producing these emulsions.
摘要:
Porous glass product of the invention comprises about 60 to about 80% by weight of SiO.sub.2, about 7 to about 15% by weight of Al.sub.2 O.sub.3, about 6 to about 12% by weight of B.sub.2 O.sub.3, about 3 to about 7% by weight of Na.sub.2 O and about 3 to 7% by weight of CaO and having pores about 200 to about 10000 nm in size and circular in cross section.
摘要翻译:本发明的多孔玻璃制品包含约60至约80重量%的SiO 2,约7至约15重量%的Al 2 O 3,约6至约12重量%的B 2 O 3,约3至约7重量%的Na 2 O 和约3〜7重量%的CaO,具有孔径约200〜约10000nm,截面为圆形。
摘要:
A method of making metallic iron in which a compact, containing iron oxide such as iron ore or the like and a carbonaceous reductant such as coal or the like, is used as material, and the iron oxide is reduced through the application of heat, thereby making metallic iron. In the course of this reduction, a shell composed of metallic iron is generated and grown on the surface of the compact, and slag aggregates inside the shell. This reduction continues until substantially no iron oxide is present within the metallic iron shell. Subsequently, heating is further performed to melt the metallic iron and slag. Molten metallic iron and molten slag are separated one from the other, thereby obtaining metallic iron with a relatively high metallization ratio. Through the employment of an apparatus for making metallic iron of the present invention, the above-described method is efficiently carried out, and metallic iron having a high iron purity can be made continuously as well as productively not only from iron oxide having a high iron content but also from iron oxide having a relatively low iron content.