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Preparation method of high-strength lightweight aluminium-zirconium hollow microspheres

A hollow microsphere, high-strength technology, applied in the preparation of microspheres, microcapsule preparations, etc., can solve the problems of complex process, low spheroidization rate, incomplete encapsulation, etc.

Active Publication Date: 2015-02-11
(CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003]The composite ceramic hollow microspheres currently on the market are mainly obtained from the hollow ceramic microspheres produced during the combustion process of coal powder, and are obtained through air separation or magnetic separation. Its main components are silicon oxide and aluminum oxide, the content of impurities is too much, the composition fluctuates greatly, and the compressive strength is low
[0004] Patent CN 101499348A discloses a hollow silica / magnetic composite microsphere and its preparation method. It is obtained by embedding a layer of magnetic particles on the surface of silica microspheres. The disadvantage is that the process is relatively complicated and cannot be mass-produced and applied.
Patent CN 101905153A discloses the preparation method and application of ZnO-doped TiO2 composite hollow spheres. The composite hollow microspheres are prepared by template method-hydrolysis coating method to prepare ZnO-doped TiO22Composite hollow ball, the disadvantage of this method is less ball forming rate, incomplete wrapping, and low compressive strength

Method used

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  • Preparation method of high-strength lightweight aluminium-zirconium hollow microspheres
  • Preparation method of high-strength lightweight aluminium-zirconium hollow microspheres

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1. Weigh 5g of aluminum sulfate and 5g of zirconium sulfate, dissolve them in 78g of aqueous solution, mix and stir evenly, add 10g of octane, 0.1g of sodium lauryl sulfate, and stir at a speed of 20,000rpm for 5 minutes to form an oil Water-in-aluminum zirconium microsphere emulsion. Pass the emulsion through the spray drying equipment at a spray drying temperature of 200°C to obtain aluminum-zirconium porous hollow microspheres, put the dried porous hollow microsphere powder into a high-temperature furnace for two sintering, and the heating rate of the first sintering is 10°C / min, raise the temperature to 600°C, keep the temperature for 2 hours, and then carry out the second reburning after cooling down, the heating rate is 5°C / min, raise the temperature to 1200°C, and keep the temperature for 2 hours. The final aluminum-zirconium hollow microspheres have a particle size of 0.1-50 μm, a wall thickness of 20-30 nm, and a density of 0.4 g / cm 3 , Calculated by volume, ...

Embodiment 2

[0022] 2. Weigh 8g of aluminum sulfate and 8g of zirconium sulfate, dissolve them in 69g of aqueous solution, mix and stir evenly, add 14g of decane, 0.3g of sodium lauryl sulfate, and form an oil Water-in-aluminum zirconium microsphere emulsion. The emulsion is passed through the spray drying equipment, the spray drying temperature is 300°C, and the aluminum-zirconium porous hollow microspheres are obtained. The dried porous hollow microsphere powder is put into a high-temperature furnace for two sintering, and the heating rate of the first sintering is 10°C / min, raise the temperature to 600°C, keep the temperature for 2 hours, and then carry out the second reburning after cooling down, the heating rate is 5°C / min, raise the temperature to 1200°C, and keep the temperature for 2 hours. The final aluminum-zirconium hollow microspheres have a particle size of 0.1-50 μm, a wall thickness of 20-30 nm, and a density of 0.6 g / cm 3 , Calculated by volume, the crushing strength of a...

Embodiment 3

[0024] 3. Weigh 10g of aluminum sulfate and 10g of zirconium sulfate, dissolve them in 55g of aqueous solution, mix and stir evenly, add 25g of kerosene, 0.5g of sodium dodecylbenzenesulfonate, and form Water-in-oil aluminum zirconium microsphere emulsion. Pass the emulsion through the spray drying equipment at a spray drying temperature of 200°C to obtain aluminum-zirconium porous hollow microspheres, put the dried porous hollow microsphere powder into a high-temperature furnace for two sintering, and the heating rate of the first sintering is 10°C / min, raise the temperature to 600°C, keep the temperature for 2 hours, and then carry out the second reburning after cooling down, the heating rate is 5°C / min, raise the temperature to 1200°C, and keep the temperature for 2 hours. The final aluminum-zirconium hollow microspheres have a particle size of 0.1-50 μm, a wall thickness of 20-30 nm, and a density of 0.4 g / cm 3 , Calculated by volume, the crushing strength of aluminum-zi...

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Abstract

The invention discloses a preparation method of high-strength lightweight aluminium-zirconium hollow microspheres. The preparation method comprises the following steps: (1) preparing water-in-oil type aluminium-zirconium microsphere emulsion; (2) rapidly dehydrating the microsphere emulsion by using spray drying equipment so as to form aluminium-zirconium porous hollow microspheres; (c) collecting dried hollow microsphere powder, and carrying out two times of after-combustion so as to obtain the compact high-strength lightweight aluminium-zirconium hollow microspheres with the density of 0.4-0.8g / cm<3>, the compressive strength of greater than or equal to 35MPa, the particle size of 0.1-50 micrometers and the wall thickness of 20-30nm. Serving as lightweight packing, the hollow microspheres can be applied to the fields of coating, printing ink, plastic, rubber, petrochemical engineering, automobiles, ships and the like.

Description

technical field [0001] The invention belongs to the technical field of microsphere materials, and in particular relates to a preparation method of high-strength lightweight aluminum-zirconium hollow microspheres. Background technique [0002] Hollow ceramic microsphere is a kind of hollow tiny spherical material. It is a hollow particle with unique and stable properties. It is widely used in petroleum cementing and automobile floor because of its light weight, low thermal conductivity, wear resistance, high dispersion, good electrical insulation and thermal stability. , Emulsion explosives, high-grade fire-resistant coatings, thermal insulation refractory materials, building exterior wall thermal insulation and energy saving, high-grade insulation materials and other fields. In addition, it also has potential applications in light-weight packaging materials, wave-absorbing materials, deep-water buoyancy materials, and lightweight high-strength concrete in the electronics in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/10C04B35/48C04B35/622B01J13/12
Inventor 彭寿王芸杨扬钱学君彭程
Owner (CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD