Preparation method for low-temperature sintered type ceramic glass

A glass-ceramic and low-temperature sintering technology, which is applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve the problems of poor crystal size uniformity of ordinary glass-ceramics, failure to meet the requirements of the glass market, and intensified erosion of refractory materials. Achieve the effects of improving low-temperature sintering and mechanical properties, reducing viscosity, and reducing softening temperature

Inactive Publication Date: 2018-06-15
CHANGZHOU OPTICAL MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The technical problem to be solved by the present invention: the continuous melting temperature of ordinary glass-ceramics is too high at present, which increases fuel consumption, and intensifies the erosion of glass liquid on refractory materials of kilns, and the crystal size uniformity of ordinary glass-ceramics is poor and the mechanical properties are poor. Poor, can not meet the defects of the glass market requirements, provides a preparation method of low-temperature sintered glass-ceramic

Method used

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  • Preparation method for low-temperature sintered type ceramic glass

Examples

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example 1

[0025] Weigh 1.0kg of urban sludge and pour it into a centrifuge, centrifuge at a speed of 7000r / min for 16min, separate the precipitate, and place the precipitate in an oven, dry at a temperature of 95°C for 35min, and discharge at a constant weight , to obtain a dry precipitate, and then put the dry precipitate into a muffle furnace, calcined at a temperature of 750 ° C for 1 hour, and naturally cooled to room temperature to obtain a calcined precipitate, continue to pour the calcined precipitate into the Mix and mill 0.8% zirconia in a ball mill tank for 3 hours, pass through a 120-mesh sieve after ball milling to obtain a precipitate powder; weigh 24g of ultra-fine alumina with a particle size of 85nm and pour it into a solution containing 2g sodium lauryl sulfate and 80mL Mix and stir in a beaker of deionized water for 20 minutes to obtain an ultrafine alumina dispersion. The ultrafine alumina dispersion, deionized water and absolute ethanol are mixed in a condenser tube w...

example 2

[0027] Weigh 1.1kg of urban sludge and pour it into a centrifuge, centrifuge at a speed of 7500r / min for 18 minutes, separate the precipitate, and place the precipitate in an oven, dry it at a temperature of 97°C for 40 minutes, and discharge it at a constant weight , to obtain a dry precipitate, and then put the dry precipitate into a muffle furnace, calcined at a temperature of 800 ° C for 2 hours, and naturally cooled to room temperature to obtain a calcined precipitate, continue to pour the calcined precipitate into the Mix 0.8% zirconia in a ball mill jar and mill for 4 hours, pass through a 120-mesh sieve after ball milling to obtain a precipitate powder; weigh 26g of superfine alumina with a particle size of 88nm and pour it into a mixture of 3g sodium lauryl sulfate and 87mL Mix and stir in a beaker of deionized water for 22 minutes to obtain a superfine alumina dispersion. The superfine alumina dispersion, deionized water and absolute ethanol are mixed at a volume rati...

example 3

[0029]Weigh 1.2kg of urban sludge and pour it into a centrifuge, centrifuge at a speed of 8000r / min for 20min, separate the precipitate, and place the precipitate in an oven, dry at 100°C for 45min, and discharge at a constant weight , to obtain a dry precipitate, and then put the dry precipitate into a muffle furnace, calcined at a temperature of 850 ° C for 3 hours, and naturally cooled to room temperature to obtain a calcined precipitate, continue to pour the calcined precipitate into the Mix and mill 0.8% zirconia in a ball mill tank for 5 hours, pass through a 120-mesh sieve after ball milling, and obtain a precipitate powder; weigh 30g of ultrafine alumina with a particle size of 90nm and pour it into a solution containing 4g sodium lauryl sulfate and 95mL Mix and stir in a beaker of deionized water for 24 minutes to obtain a superfine alumina dispersion. The superfine alumina dispersion, deionized water and absolute ethanol are mixed at a volume ratio of 5:2:1 and placed...

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Abstract

The invention relates to the technical field of preparation of ceramic glass, and in particular relates to a preparation method for low-temperature sintered type ceramic glass. The method uses precipitate powder and modified ultrafine aluminium oxide powder as basic glass, uses modified boron mud powder and sheep bone powder as nucleating agents, and uses a rare earth oxide and sodium chloride asclarifying agents, and the basic glass, the nucleating agents and the clarifying agents are mixed for a reaction to obtain the low-temperature sintered type ceramic glass. According to the method provided by the invention, a precipitate obtained by centrifugation in sludge is calcined under high-temperature conditions to obtain the precipitate powder, ultrafine aluminium oxide powder is modified by a silane coupling agent, in the low-temperature sintering process, the modified ultrafine powder is formed, so that the sintering speed of the ceramic glass is improved; and boron mud powder and a self-prepared dispersion liquid are mixed, the mixed solution is uniformly dispersed on the surface of the basic glass, then the sheep bone powder is added, and the situation that the sheep bone powderis rich in phosphorus element matter is utilized, so that a final precipitated crystal has a more compact and uniform structure, the dimensional uniformity of the ceramic glass is further improved, and the method has wide application prospects.

Description

technical field [0001] The invention relates to the technical field of glass-ceramics preparation, in particular to a method for preparing low-temperature sintered glass-ceramics. Background technique [0002] Microcrystalline glass, also known as microcrystalline jade or ceramic glass, refers to adding certain nucleating substances to the glass, and through heat treatment, light irradiation or chemical treatment, a large number of tiny crystals are uniformly precipitated in the glass to form a dense microcrystal. A multiphase complex of crystalline and glassy phases. There are many types of glass-ceramics, and glass products of different uses can be produced by different composition ratios and different processes, such as: transparent glass-ceramics, glass-ceramics with zero expansion coefficient, surface-strengthened glass-ceramics, different colors or Cutting glass-ceramic, etc. [0003] Glass-ceramic is an inorganic material with excellent performance, which has th...

Claims

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Application Information

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IPC IPC(8): C03C10/00C03B19/06
CPCC03B19/06C03C10/0063
Inventor 唐仕平杨明忠张建初
Owner CHANGZHOU OPTICAL MATERIAL
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