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Preparation method of modified zirconium boride heat-insulating nano-ceramic material

A nano-ceramic and zirconium boride technology, applied in the field of nano-materials, can solve the problems of inability to guarantee the adhesion and stability of nano-ceramic powder, complicated process and equipment requirements, loss of fiber texture and hand feeling, etc., and is suitable for large-scale industrialization Strong application, practicality, and good heat insulation performance

Active Publication Date: 2020-06-02
桐乡清锋科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are mainly three ways to theoretically manufacture nano-ceramic composite functional fibers: (1) Coating method, which is to coat the fiber surface with a binder containing nano-ceramic powder. The adhesion and stability of ceramic powder on the fiber surface, especially the comfort of fiber products and the durability of repeated washing
(2) The composite fiber masterbatch method is to blend nano-ceramic powder and organic polymer to form a composite fiber masterbatch, and then mix it with spinning raw materials in a certain proportion for spinning. The process, technology and fiber quality of this method are operable The key is how to effectively disperse the nano-ceramic powder in the masterbatch in the state of nano-particles, which is technically difficult, and no specific and effective method has been found so far.
(3) Synthetic fiber masterbatch method is to carry out the in-situ synthesis of fiber raw materials in the presence of nanopowders to form fiber macromolecules coated with nanoparticles to form nanocomposite fiber masterbatch, and then use the same method as (2) Spinning, the key to this method is that the technology, process and equipment requirements of synthetic fiber masterbatch are very complicated and difficult, and the cost is relatively high. In addition, it is to obtain the special function of the fiber without losing the fiber texture and feel. At present, There is no ideal solution

Method used

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  • Preparation method of modified zirconium boride heat-insulating nano-ceramic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Inject 2 parts of kaolin, 1 part of aluminum nitrate, 5 parts of silicon dioxide, 4 parts of calcium carbonate, and 1 part of tungsten carbide into the screw-type stirring paddle, heat and stir, and control the stirring speed at 200 rpm. At 720°C, keep warm for 30 minutes to obtain slurry;

[0023] (2) Pour the slurry in step (1) into the vacuum reaction furnace, add 5 parts of organic zirconium alkoxide and 1 part of sodium lignosulfonate at the same time, set the furnace temperature to 990°C, and the vacuum pressure to 1.2*10 -3 Pa, continuous reaction for 60min;

[0024] (3) Inject the reaction slurry in the step (2) into a twin-screw extruder to extrude and plasticize to obtain a nano-ceramic material masterbatch, wherein the screw temperature is 220° C., and the screw speed is 1500 rpm;

[0025] (4) Dissolve 1 part of lithium carbonate and 2 parts of sodium bicarbonate in an evaporator with an appropriate amount of deionized water, add 4 parts of zirconium bor...

Embodiment 2

[0029] (1) Inject 3 parts of kaolin, 2 parts of aluminum nitrate, 6 parts of silicon dioxide, 5 parts of calcium carbonate, and 2 parts of tungsten carbide into the screw-type stirring paddle, heat and stir, and control the stirring speed at 250 rpm. At 720°C, keep warm for 30 minutes to obtain slurry;

[0030] (2) Pour the slurry in step (1) into the vacuum reaction furnace, add 6 parts of organic zirconium alkoxide and 2 parts of sodium lignosulfonate at the same time, set the furnace temperature to 990°C, and the vacuum pressure to 1.2*10 -3 Pa, continuous reaction for 70min;

[0031] (3) Inject the reaction slurry in the step (2) into a twin-screw extruder to extrude and plasticize to obtain a nano-ceramic material masterbatch, wherein the screw temperature is 230° C., and the screw speed is 1500 rpm;

[0032] (4) Dissolve 2 parts of lithium carbonate and 3 parts of sodium bicarbonate in an evaporator with an appropriate amount of deionized water, add 5 parts of zirconium...

Embodiment 3

[0036] (1) Inject 4 parts of kaolin, 3 parts of aluminum nitrate, 8 parts of silicon dioxide, 7 parts of calcium carbonate, and 2 parts of tungsten carbide into the screw-type stirring paddle, heat and stir, and control the stirring speed at 280 rpm. At 720°C, keep warm for 30 minutes to obtain slurry;

[0037] (2) Pour the slurry in step (1) into the vacuum reaction furnace, add 7 parts of organic zirconium alkoxide and 2 parts of sodium lignosulfonate at the same time, set the furnace temperature to 1000 °C, and the vacuum pressure to 1.2*10 -3 Pa, continuous reaction 80min;

[0038] (3) Inject the reaction slurry in the step (2) into a twin-screw extruder to extrude and plasticize to obtain a nano-ceramic material masterbatch, wherein the screw temperature is 240° C., and the screw speed is 1500 rpm;

[0039] (4) Dissolve 2 parts of lithium carbonate and 4 parts of sodium bicarbonate in an evaporator with an appropriate amount of deionized water, add 8 parts of zirconium b...

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Abstract

The invention discloses a preparation method of a modified zirconium boride heat-insulation nano ceramic material. The preparation method comprises the following steps: stirring by utilizing a screw type stirring paddle, carrying out pressurizing and high-temperature reaction by utilizing a vacuum reaction furnace and molding by utilizing a double-screw extruder, so as to prepare a nano ceramic material master batch; then adsorbing zirconium boride on the surface layer of the nano ceramic material master batch by utilizing the balance effect of adsorption, ultrasonic oscillation, and evaporation and precipitation, so as to obtain the modified zirconium boride heat-insulation nano ceramic material. The prepared modified zirconium boride heat-insulation nano ceramic material has good heat insulation performance, strong compression resistance and tension compression and a relatively good application prospect.

Description

technical field [0001] The invention relates to the technical field of nanometer materials, in particular to a preparation method of a modified zirconium boride heat-insulating nanometer ceramic material. Background technique [0002] Nanomaterials refer to substances that have at least one dimension in the nanoscale range (1-100nm) in three-dimensional space. Nanoscale effects often make such materials exhibit different melting points, magnetism, optics, thermal conductivity, and electrical conductivity from bulk materials. Therefore, it can have broad application prospects in the fields of optoelectronic materials, ceramic materials, sensors, semiconductor materials, catalytic materials, and medical treatment. However, the preparation conditions of nanomaterials are generally harsh and the cost is high. Therefore, the preparation of nanocomposites using nanomaterials as additives is an effective means to reduce costs and promote the application of nanomaterials. [0003] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/14C04B35/628
Inventor 陈兴建
Owner 桐乡清锋科技有限公司