A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention belongs to the technical field of ceramic, and concretely relates to a low thermal expansion coefficient iolite cellular ceramic and a preparation method thereof. the iolite cellular ceramic is composed of an inorganic raw material, hydroxypropyl methyl cellulose and magnesium stearate, the inorganic raw material comprises the following components by weight part: 41-45 parts of powdered steatile, 0-35 parts of alumina powder, 42-0 parts of aluminium hydroxide powder, 20-24 parts of quartz powder and/or quartz glass powder, the addition amount of hydroxypropyl methyl cellulose accounts for 7% of inorganic raw material mass, and the addition amount of magnesium stearate accounts for 2% of inorganic raw material mass. The thermal expansion coefficient of the iolite cellular ceramic is low, the thermal expansion coefficient is 0.65-0.85*10<-6>/DEG C(25-800 DEG C), cost is low, the iolite cellular ceramic is a carrier of a catalysis purifier with a national fourth-stage or a national fifth-stage tail gas emission standard, and is a selection of production of the iolite cellular ceramic carrier.
The invention belongs to the technical field of ceramic, and concretely relates to a low thermal expansion coefficient iolite cellular ceramic and a preparation method thereof. the iolite cellular ceramic is composed of an inorganic raw material, hydroxypropyl methyl cellulose and magnesium stearate, the inorganic raw material comprises the following components by weight part: 41-45 parts of powdered steatile, 0-35 parts of alumina powder, 42-0 parts of aluminium hydroxide powder, 20-24 parts of quartz powder and/or quartz glass powder, the addition amount of hydroxypropyl methyl cellulose accounts for 7% of inorganic raw material mass, and the addition amount of magnesium stearate accounts for 2% of inorganic raw material mass. The thermal expansion coefficient of the iolite cellular ceramic is low, the thermal expansion coefficient is 0.65-0.85*10<-6>/DEG C(25-800 DEG C), cost is low, the iolite cellular ceramic is a carrier of a catalysis purifier with a national fourth-stage or a national fifth-stage tail gas emission standard, and is a selection of production of the iolite cellular ceramic carrier.
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