Alumina slip formula for making ceramic foam.

Abstract

OCR 09WP 26 / 12 / 2567 The alumina slip formula for making ceramic foam consists of calcined microalumina powder. Quartz powder, bentonite or kaolin clay (either one), sodium silicate solution, water, surfactant. Polyvinyl alcohol solution and aluminosilicate fiber are prepared by combining the components. When all ingredients are mixed together, a slip solution with a density of 1.60 - 1.80 grams per cubic centimeter will be obtained. White to off-white in color, this is a slip used in the ceramic manufacturing process and has good adhesion to polymers. It is coated and has heat-resistant properties when fired to create ceramic foam at a temperature of 1,200°C. Celsius degrees Celsius, for applications in the materials and construction industries.

Claims

OCR 09WP 26 / 12 / 2567 1. The alumina slip formula for making ceramic foam consists of: a. Microalumina powder is calcined to a concentration of 30-70 percent by weight. B. Quartz powder, particle size 325 mesh, 5-20% by weight. C. Bentonite or kaolin, either one, in an amount of 2-10 percent by weight. d. A sodium silicate solution, 5-20 percent by weight. Water content: 15-35 percent by weight. F. Surfactant (Tween 80) in an amount of 0.1 - 3 percent by weight. B. A polyvinyl alcohol solution of 0.1 - 1 percent by weight. C. Aluminosilicate fiber content: 1-5 percent by weight.

2. The alumina slip formula for use in making ceramic foam, as per claim 1, which involves a sodium silicate solution. Its composition includes 15-18 percent by weight of sodium oxide (Na2O) and silica (SiO2). 34-37 percent by weight and water 46-50 percent by weight.