Compositions: ceramic – Ceramic compositions – Pore-forming
Patent
1989-08-29
1990-09-04
Group, Karl
Compositions: ceramic
Ceramic compositions
Pore-forming
501141, 501143, 501144, 501155, 106 36, C04B 3800, C04B 3324
Patent
active
049544608
ABSTRACT:
A water-permeable ceramic material is made of a porcelain particulate material as the principle component, one or more primary binders selected from starch adhesives, organic binders, clay and water glass, and one or more secondary binders selected from frit, glaze and glass powder. The principal component is selected from one or more porcelain materials including a fired mixture of pottery stone, kaolin and feldspar; porcelain wastes, and other porcelain materials such as road-surfacing porcelain color aggregates, and is classified to have a particles are of relatively high bulk density and very low porosity. The mix is shaped by a pressing machine to a tabular or tubular form suited to the specific use of the final product. The pressure of the pressing machine is adjusted to an amount of 30-200 kg/cm.sup.2. After shaping, the resultant compact is sintered at a temperature up to the melting point of the porcelain particles to produce the ceramic material. The ceramic material has a continuous porous structure which provides an effective water-permeable property. The individual particles have interstices therebetween having an average pore diameter of at least 0.1 mm; the composite material has an apparent porosity of 10-53%, a water permeability of at least 50 ml/min.cm.sup.2, and a normal incident absorptivity of at least 65% within or throughout the frequency range of 500-5,000 Hz.
REFERENCES:
patent: 3132956 (1964-05-01), Lewis
patent: 3274310 (1966-09-01), Kohl
patent: 3389001 (1968-06-01), Blackburn et al.
patent: 3824112 (1974-07-01), Lawrence et al.
patent: 4481124 (1984-11-01), Koya et al.
Honda Tohru
Kachi Tatsushi
Kajita Yoshiharu
Ohta Shigetoshi
Tanemura Fumikazu
Group Karl
Mino Yogyo Co., Ltd.
LandOfFree
Water-permeable ceramic material does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Water-permeable ceramic material, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Water-permeable ceramic material will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-441864