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A kind of preparation method of micro-nano cavity material

A micro-nano and cavity technology is applied in the field of preparation of micro-nano cavity materials, which can solve the problems of high manufacturing cost of micro-hollow spheres, difficult substrates for micro-nano hollow spheres, and difficult application, and achieves a micro-nano pore structure. Abundant, accessible, inexpensive effects

Inactive Publication Date: 2020-06-30
广东格仑帝环保材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing micro-nano cavities can be synthesized through hydrothermal synthesis to prepare micro-nano hollow spheres with different shapes. However, the hydrothermal reaction is completed under high temperature and high pressure, and the substrate of micro-nano hollow spheres is also difficult to adjust arbitrarily. , resulting in high manufacturing cost of micro hollow spheres, single composition, and difficulty in large-scale promotion and application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A method for preparing a micro-nano cavity material, comprising in parts by weight:

[0017] Step 1, mix 20 parts of diatomaceous earth, 0.5 part of starch microspheres, the diameter of the microspheres is 0.5 micron, and 20 parts of deionized water to obtain a mixture, wherein the starch microspheres are used as the template agent, and the diatomite is used as the forming agent. ball substrate.

[0018] Step 2, 20 parts of water glass containing 2% sodium hydroxide are added in the above-mentioned mixed homogeneous mixture, heated to 20 o C geopolymerization takes place, reacts 12 hours, generates geopolymer on the surface of starch microsphere;

[0019] Step 3, putting the starch microspheres of the geopolymer formed on the surface into an organic solvent, soaking and dissolving, removing the template agent, and obtaining a micro-nano hollow cavity.

[0020] The micro-nano cavity material of this example is analyzed by a voltage servo anti-compression and anti-foldi...

Embodiment 2

[0022] A method for preparing a micro-nano cavity material, comprising in parts by weight:

[0023] Mix 150 parts of mixed soil composed of bentonite, kaolin and diatomaceous earth, 5 parts of polystyrene foam microspheres with a diameter of 1 micron, and 150 parts of deionized water to obtain a mixture, wherein the organic micronano The balls are used as a template, and the mixed soil is used as a ball-forming base material.

[0024] Add 150 parts of water glass containing 30% sodium hydroxide to the well-mixed mixture and heat to 90 o C geopolymerization occurs, and the reaction time is 24 hours, and the geopolymer is generated on the surface of polystyrene foam microspheres;

[0025] at 900 o C. Calcining the polystyrene foam microspheres of geopolymer formed on the surface at high temperature, and calcining for 6 hours to remove the template agent to obtain micro-nano hollow spheres.

[0026] The micro-nano cavity material of this example was analyzed by a voltage servo...

Embodiment 3

[0028] A method for preparing a micro-nano cavity material, comprising in parts by weight:

[0029] Step 1, weigh 50 parts of kaolin, 1 part of polystyrene foam microspheres with a diameter of 1 micron, add 100 parts of deionized, stir, and mix evenly; wherein, polystyrene foam microspheres are used as a template agent, and kaolin is used as a forming agent. ball substrate.

[0030] Step 2, take by weighing 5 parts of sodium hydroxide, then add 95 parts of water glass, be mixed with 100 parts of 5% sodium hydroxide-95% water glass mixed solution as alkali excitation liquid;

[0031] Step 3, adding the prepared alkali shock to the mixture prepared in step 1, heating to 60 o C, reacted for 24 hours to form geopolymer microspheres;

[0032] Step 4, the polymer microsphere that step 3 makes is placed in muffle furnace 400 o C was roasted for 3 hours to obtain porous micro-nano hollow spheres with both nano-micropores and micro-macropores.

[0033] The micro-nano cavity materia...

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Abstract

The invention relates to a method for preparing a micro-nano cavity material. The method comprises the following steps: uniformly mixing the following components in parts by weight: 20-150 parts of clay, 0.5-5 parts of organic micro-nano spheres and 20-150 parts of deionized water so as to obtain a mixture, wherein the organic micro-nano spheres are adopted as a template agent; putting 20-150 parts of an alkali activating liquid into the uniformly mixed mixture, heating to 20-90 DEG C to implement a polymerization reaction, and generating a geopolymer on the surfaces of the organic micro-nanospheres; removing the template agent of the organic micro-nano spheres of the geopolymer generated on the surfaces, thereby obtaining the micro-nano cavity material. By adopting the scheme, the micro-nano cavity material prepared by using the method is of a structure of micro-nano pores and medium pores in an original clay structure, and also has micron-order large pores sintered by using a template. Tests show that the prepared micro-nano cavity material is good in pressure resistance, small in density and applicable to aspects such as thermal insulation, sound insulation and catalyst carriers. As the raw materials are cheap and easy to obtain, the prepared micro-nano cavity material is low in preparation cost and can be produced and applied in a large scale.

Description

technical field [0001] The invention relates to the technical field of chemical material preparation, in particular to a preparation method of a micro-nano cavity material. Background technique [0002] Micro-nano cavities can not only be used to store drugs and achieve slow release of drugs, but also prevent heat transfer and sound transmission. Therefore, micro-nano cavity materials have broad application prospects in the release of agricultural fertilizers and pest control. At the same time, the micro-nano hollow cavity also has broad application prospects in heat insulation, sound insulation materials and catalyst carriers. Existing micro-nano cavities can be synthesized through hydrothermal synthesis to prepare micro-nano hollow spheres with different shapes. However, the hydrothermal reaction is completed under high temperature and high pressure, and the substrate of micro-nano hollow spheres is also difficult to adjust arbitrarily. , resulting in high manufacturing c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/26C04B38/04C04B33/13C04B38/06
CPCY02P40/10
Inventor 刘自力吴桂冠左建良刘奎良
Owner 广东格仑帝环保材料科技有限公司