摘要:
A process of manufacturing inorganic nanofibers, without using an organic polymer, using a highly reactive metal alkoxide such as titanium alkoxide or zirconium alkoxide, in particular, a process in which inorganic nanofibers can be stably produced over a long period, is provided. It is a process of manufacturing inorganic nanofibers by electrospinning using a sol solution containing an inorganic component as a main component, characterized in that the sol solution contains a metal alkoxide having a high reactivity and a salt catalyst, and that the salt catalyst is an amine compound having an N—N bond, an N—O bond, an N—C═N bond, or an N—C═S bond.
摘要:
A process of manufacturing inorganic nanofibers, without using an organic polymer, using a highly reactive metal alkoxide such as titanium alkoxide or zirconium alkoxide, in particular, a process in which inorganic nanofibers can be stably produced over a long period, is provided. It is a process of manufacturing inorganic nanofibers by electrospinning using a sol solution containing an inorganic component as a main component, characterized in that the sol solution contains a metal alkoxide having a high reactivity and a salt catalyst, and that the salt catalyst is an amine compound having an N—N bond, an N—O bond, an N—C═N bond, or an N—C═S bond.
摘要:
A process for manufacturing organic fibers containing an inorganic component comprising the steps of: (1) preparing an inorganic spinnable sol solution; (2) mixing the inorganic spinnable sol solution, a solvent capable of dissolving the inorganic spinnable sol solution, and an organic polymer capable of being dissolved in the solvent to prepare a spinning solution; and (3) spinning the spinning solution to form the organic fibers containing an inorganic component composed of an inorganic gel and the organic polymer, is disclosed. The inorganic spinnable sol solution preferably has a weight average molecular weight of 10,000 or more, and the inorganic spinnable sol solution is preferably prepared from a material containing a metal alkoxide having an organic substituent. According to the process of the present invention, organic fibers containing an inorganic component having an improved mechanical strength can be produced by mixing an inorganic component into an organic component, and a nonwoven fabric containing the fibers can be provided.
摘要:
An apparatus for a discharge treatment, comprising a pair of electrodes located opposite to each other; an element for applying an alternating current-high voltage between the electrodes; and an element for passing a gas mainly composed of air at a rate of 10 m/sec or more through a space formed between the electrodes is disclosed. Further, a process for a discharge treatment of an article, comprising applying an alternating current-high voltage between a pair of electrodes located opposite to each other, to the article placed between the electrodes, while a gas mainly composed of air is passed at a rate of 10 m/sec or more through a space formed between the electrodes, to thereby expose the article to an electric discharge induced between the electrodes, is also disclosed.
摘要:
An inorganic fiber structure comprising inorganic nanofibers having an average fiber diameter of 3 μm or less, in which an entirety including the inside thereof is adhered with an inorganic adhesive, and the porosity thereof is 90% or more, is disclosed. Furthermore, a process for producing an inorganic fiber structure is disclosed, which includes (i) a step of spinning inorganic fibers by an electrospinning method, from a spinning inorganic sol solution containing a compound mainly composed of an inorganic component; (ii) a step of forming an inorganic fiber aggregate by irradiating the inorganic fibers with ions having a polarity opposite to that of the inorganic fibers to accumulate the inorganic fibers; and (iii) a step of forming an inorganic fiber structure adhering to the inorganic fiber aggregate with an inorganic adhesive in an entirety including the inside thereof, in which an adhering inorganic sol solution containing a compound mainly composed of an inorganic component is imparted to an entirety including the inside of the inorganic fiber aggregate, and an excess adhering inorganic sol solution is removed by gas-through.
摘要:
Disclosed is a fine-fibers-dispersed nonwoven fabric comprising dispersed fine fibers having a fiber diameter of 4 μm or less and a fiber length of 3 mm or less, wherein an adhesion rate of substances adhered to the nonwoven fabric is 0.5 mass % or less. Further, a process and an apparatus for manufacturing the fine-fibers-dispersed nonwoven fabric, as well as a sheet material comprising the fine-fibers-dispersed nonwoven fabric are also disclosed.
摘要:
Disclosed is a powders-affixed nonwoven fabric prepared from a fiber web comprising powder materials and fine short fibers having a fiber diameter of 4 &mgr;m or less and a fiber length of 3 mm or less in a dispersed state in the powders-containing fiber web, the powders-containing fiber web being formed by a method other than a wet-laid method. Further, a process for manufacturing the powders-affixed nonwoven fabric, and a sheet material comprising the powders-affixed nonwoven fabric are also disclosed.
摘要:
A process for treating outer-inner surfaces of a porous non-conductor, comprising steps of: placing said porous non-conductor between a pair of electrodes which are located opposite to each other and carry a dielectric layer on a surface facing the other electrode, respectively, so that said porous non-conductor is brought into contact with both dielectric layers without coming into contact with said electrodes; and then, applying an alternating current voltage having a frequency of about 0.1 KHz to about 100 KHz between said electrodes to thereby induce an electric discharge in voids contained in said porous non-conductor and sandwiched between a pair of said electrodes is disclosed.
摘要:
A process for manufacturing an inorganic material-based article comprising the steps of (1) forming a sol solution mainly composed of an inorganic component, (2) producing inorganic material-based gel fine fibers by extruding the resulting sol solution from a nozzle, and at the same time, applying an electrical field to the extruded sol solution to thin the extruded sol solution, and then, collecting inorganic material-based gel fine fibers on a support, (3) drying the collected inorganic material-based gel fine fibers to produce inorganic material-based article containing inorganic material-based dried gel fine fibers, and then, (4) sintering the inorganic material-based article containing inorganic material-based dried gel fine fibers to produce inorganic material-based article containing inorganic material-based sintered fine fibers.
摘要:
A process for electret treatment is described, involving(1) placing the dielectric article between a combination of a first ion-repulsive electrode and a first ion-attractive electrode and between a combination of a second ion-repulsive electrode and a second ion-attractive electrode, under a specified arrangement;(2) supplying a first positive ion and a first negative ion from a first ion generating means between the dielectric article and the first ion-repulsive electrode, the first ion generating means being selected from an alternating current surface discharge element and an alternating current corona-type ion generating element;(3) applying a direct current voltage between the first ion-repulsive electrode and the first ion-attractive electrode to produce a first potential difference therebetween, whereby only one of the first positive and negative ions is moved in a specified direction, and is transferred on the dielectric article;(4) supplying a second positive ion and a second negative ion from a second ion generating means between the dielectric article and a second ion-repulsive electrode, the second ion generating means being selected from specified elements; and(5) applying a direct current voltage between the second ion-repulsive electrode and the second ion-attractive electrode to produce a second potential difference therebetween, whereby only the second ion having polarity opposite to polarity of the first ion transferred on the dielectric article is moved in a specified direction, and is transferred on the dielectric article.