摘要:
The invention concerns a composite material comprising activated carbon and expanded graphite. The material is a block wherein the activated carbon is homogeneously and uniformly distributed in the form of microporous particles. The texture of said particles is characterised by a microporous volume W0 ranging between 0.1 cm3g−1 and 1.5 cm3g−1 and a mean pore dimension L0 ranging between 2 Å and 30 Å, the activated carbon particles have substantially the same texture wherever they are located in the composite material, the thermal conductivity levels of the material range between 1 and 100 Wm−1K−1. Said material is obtained by heat treatment of a mixture of expanded graphite and an activated carbon precursor in the presence of an activating agent at a temperature and for a time interval sufficient to obtain a wear rate of the activated carbon precursor ranging between 5 and 70% by mass.
摘要:
A method of making a finished product such as a building board includes the steps of forming a mixture of an expanded mineral such as exfoliated vermiculite and a thermosetting resin, pressing the mixture at a temperature in the range of from 100 to 220null C. inclusive to form a green product with a density in the range of from 200 to 650 kg/m3 inclusive, firing the green product in a kiln to its transition temperature to burn off substantially all of the organic constituents of the green product and thereby establish inorganic induced coherence to form the finished product, and allowing the finished product to cool.
摘要翻译:制造诸如建筑板材的成品的方法包括以下步骤:形成诸如剥离的蛭石的膨胀矿物和热固性树脂的混合物,将混合物在100-220℃的温度范围内压制,包括 以形成密度在200至650kg / m 3范围内的绿色产品,将窑中的绿色产品烧制至其转变温度,以消除绿色产品的基本上所有的有机成分,从而建立无机诱导的 一致性以形成成品,并允许成品冷却。
摘要:
The bran has been less usable and have not been treated as industrial resources. The present invention is a method for producing a porous carbon material product and a hard porous carbon material product which have wide variety of functionalities utilizing such bran which is burned and carbonized stably. The method according to the present invention comprises of the steps of kneading bran with a thermosetting resin and an adequate amount of a solution including an adhesive paste or water, the bran is such as rice bran or wheat bran adjusted grain size; granulating the bran kneaded to predetermined grain size or less; molding the bran granulated in a metal mold by pressurizing and degassing to be a mold; burning and carbonizing the mold detached from the metal mold by heating to desired final burning temperature at a predetermined rate under inactive gas atmosphere or under vacuum; and cooling the mold from the final burning temperature to normal temperature at a predetermined rate.
摘要:
A method of producing a fused silica product comprising introducing a silicon-containing, organometallic compound into a flame to form molten silica particles, and collecting the molten silica particles in a furnace having a crown and cup such that a fused silica product is obtained, wherein at least the furnace crown is formed from a porous, fired, zircon refractory having a sodium ion content of less than 30 ppm. The fused silica product produced by the method has a sodium ion contamination level below 100 parts per billion.
摘要:
A process for preparing a porous ceramic material, is disclosed. The process uses an organic sponge material, and a ceramic slurry. The ceramic slurry contains liquid, gluten, and ceramic material.In the first step of the process, the ceramic slurry is applied to the sponge in order to substantially saturate it with slurry. Thereafter, the saturated sponge is dehydrated until it contains less than about 5.0 weight percent of liquid. The dehydrated sponge is then fired at a temperature of from about 1,100 to about 3,500 degrees Fahrenheit.
摘要:
Lightweight, low density magnesia-based tundish refractory compositions containing from 0.01 to 2.00 weight percent styrofoam beads and up to 5.0 weight percent paper fiber are disclosed. The compositions have excellent rapid heating, thermal insulative, vertical adhesion and deskullability properties. The compositions are useful as a lining applied over the permanent lining of a tundish, such as is used in continuous molten metal casting processes.
摘要:
A method for fabricating a high-temperature ceramic superconductor having a Y-Ba-Cu-O or other copper-oxide composition of comparable properties so as to render the ceramic porous to define interlaced diffusion channels throughout the entire body of the ceramic. As a consequence, oxygen, an essential component thereof, will in the course of firing the ceramic, diffuse throughout the interior of the body and thereby interact and become integrated with the crystal structure of the ceramic to form a superconductor having superior properties. The resultant porous ceramic body may be used as a superconductive device, or it may be ground into particles and dispersed as a filler in a binder acting as a plastic agent that can be extruded, molded, or otherwise shaped to create a Meisner-effect shield, a cylindrical superconductive bearing or other superconductive structure.
摘要:
The use of microcrystalline cellulose as an extrusion aid/combustible filler for rehydratable alumina allows the production of low density alumina substrates.
摘要:
A fired refractory artefact with a fine matrix of apertures is manufactured by stacking layers of low ash paper with intervening layers of composite plastics material in sheets. The composite plastics material comprises powdered refractory material and a binder. The composite plastics material sheets are connected by ribs or walls of the composite plastics material formed, for example, in slots cut in the paper layers. The plastics material is cured and the artefact fired after burning off the paper.