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Composite skeleton reinforced ceramic based filter material preparation method

A technology of ceramic base and filter material, which is applied to ceramic products, separation methods, chemical instruments and methods, etc., can solve the problems of decreasing porosity, affecting the mechanical properties of products, inability to effectively balance filtration performance and mechanical properties, etc. Specific surface area, the effect of improving the filtration effect

Inactive Publication Date: 2019-05-31
吕莉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem mainly solved by the present invention is: in the product preparation process of the traditional ceramic filter material, due to the formation and diffusion of the glass phase, the internal pores are closed or disappear with the increase of the sintering temperature, and the through-porosity decreases, thereby reducing the sintering temperature It will affect the mechanical properties of the product, causing the disadvantages that the filtration performance and mechanical properties of the product cannot be effectively taken into account. A preparation method for a composite skeleton reinforced ceramic-based filter material is provided.

Method used

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example 1

[0026] In parts by weight, 4 parts of low-viscosity polyvinyl alcohols with an average molecular weight of 16000 are taken successively, 3 parts of microcrystalline cellulose with a limit polymerization degree of 120, 5 parts of gelatin with an isoelectric point of 6.5, and 150 parts of water; Pour polyvinyl alcohol and gelatin into water, stir and mix with a glass rod for 10 minutes, let it swell at room temperature for 12 hours, then add microcrystalline cellulose, heat and stir at 55°C and 300r / min to dissolve for 5 hours, Obtain macromolecular organic matter dispersion liquid; mix graphene oxide and water into a beaker according to the mass ratio of 1:10, and then add 10% graphene oxide mass to the beaker after ultrasonic dispersion for 60 minutes under the condition of ultrasonic frequency of 60kHz Sodium polystyrene sulfonate, then at a temperature of 65°C and a rotation speed of 500r / min, the reaction was stirred at a constant temperature for 45 minutes, filtered to obta...

example 2

[0028] Mix graphene oxide and water in a mass ratio of 1:10 and pour it into a beaker, and then ultrasonically disperse it for 60 minutes at an ultrasonic frequency of 60 kHz, then add sodium polystyrene sulfonate with 10% graphene oxide mass to the beaker , then at a temperature of 65°C and a rotation speed of 500r / min, stir and react at a constant temperature for 45 minutes, filter to obtain a filter cake, wash the filter cake with deionized water for 5 times, and then transfer the washed filter cake into a vacuum drying oven , at a temperature of 95°C and a pressure of 80Pa, vacuum-dry to constant weight to obtain modified graphene oxide; mix modified graphene oxide and deionized water at a mass ratio of 1:5 and pour into a mixer , and add a defoamer of 5% deionized water quality to the mixer, stir and disperse with a stirrer at a speed of 800r / min for 2h to obtain a graphene oxide dispersion; crush the diatomite and pass through an 80-mesh sieve, and Mix the sieved diatoma...

example 3

[0030] In parts by weight, 4 parts of low-viscosity polyvinyl alcohols with an average molecular weight of 16000 are taken successively, 3 parts of microcrystalline cellulose with a limit polymerization degree of 120, 5 parts of gelatin with an isoelectric point of 6.5, and 150 parts of water; Pour polyvinyl alcohol and gelatin into water, stir and mix with a glass rod for 10 minutes, let it swell at room temperature for 12 hours, then add microcrystalline cellulose, heat and stir at 55°C and 300r / min to dissolve for 5 hours, Obtain macromolecular organic matter dispersion; mix graphene oxide and macromolecular organic matter dispersion at a mass ratio of 1:5 and pour them into a mixer, and add 5% of the mass of macromolecular organic matter dispersion to the mixer to defoam Use a stirrer to stir and disperse at a speed of 800r / min for 2 hours to obtain a graphene oxide dispersion; crush the diatomite and pass it through an 80-mesh sieve, and use the sieved diatomite and strong...

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Abstract

The invention belongs to the technical field of environment-friendly materials and discloses a composite skeleton reinforced ceramic based filter material preparation method. The method includes: uniformly stirring and dispersing modified graphene oxide, macromolecular organic matter dispersion liquid and an antifoaming agent to obtain graphene oxide dispersion liquid; mixing diatomite with strongacid solution, performing hydrothermal reaction, filtering, washing, drying and calcining to obtain pretreated diatomite; subjecting the pretreated diatomite, the graphene oxide dispersion liquid, calcium carbonate, magnesium carbonate, sodium fluoride and nano iron powder to ball milling and mixing, and then standing for aging to obtain an aged material; rubbing the aged material to make balls,naturally drying, performing heat-preservation sintering at different temperatures under the protection of nitrogen while the temperature rise rate is controlled, cooling, and discharging to obtain acomposite skeleton reinforced ceramic based filter material. The ceramic based filter material prepared according to the technical scheme has excellent filtration performances as well as mechanical properties and has a promising prospect in development of the technical industry of environment-friendly materials.

Description

technical field [0001] The invention discloses a preparation method of a composite skeleton reinforced ceramic base filter material, which belongs to the technical field of environmental protection materials. Background technique [0002] Porous ceramic materials are a type of porous ceramic products formed by controlling the pore size and distribution during the material forming and sintering process. There are many kinds of porous ceramic materials, which can be divided into micropores (pore diameter<2nm), mesopores (2nm<pore diameter<50nm) and macropores (pore diameter>50nm) according to the pore size; Divided into granular ceramic sintered body, honeycomb ceramic and foam ceramic. [0003] As a typical coarse-grained (coalescing) material, porous ceramic filter material has many advantages, such as good chemical stability, high porosity (up to 20% to 95%), high strength, good thermal stability, and bulk density. Small, no secondary pollution and strong rege...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B35/14C04B35/626C04B35/622B01D39/04C02F3/00C02F3/34C02F3/10
CPCY02W10/10
Inventor 吕莉
Owner 吕莉
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