Superhydrophobic foam ceramic and preparation method thereof

A foam ceramic and super-hydrophobic technology, applied in the field of hydrophobic ceramics, can solve the problems of difficulty in achieving uniformity and integrity of super-hydrophobic properties, complicated process, and high cost, and achieve the effect of low cost, simple process, and good stability

Active Publication Date: 2017-04-05
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some existing technologies often prepare superhydrophobic ceramics from the water transport performance of the ceramic material itself, or need to redesign and prepare superhydrophobic coatings, resulting in high cost, complicated process, and difficulty in popularization.
Especially for most methods for special-shaped ceramic surfaces, it is difficult to achieve the uniformity and integrity of superhydrophobic properties

Method used

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  • Superhydrophobic foam ceramic and preparation method thereof
  • Superhydrophobic foam ceramic and preparation method thereof
  • Superhydrophobic foam ceramic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Please refer to Figure 1A and 1B , this embodiment is carried out according to the following steps, thereby making superhydrophobic ceramic foam.

[0027] Step 1, prepare ceramic clay 10.5%, silicon dioxide 15wt%, 5wt% acrylamide, 2wt% N,N-methylene bisacrylamide solvent, and water and tert-butanol solution with a mass ratio of 1 Afterwards, pour into the inside of ball mill to obtain slurry with ball milling for 4 hours.

[0028] Step 1 ', then add the calcium sulfate whisker of gross weight 0.5wt% in the slurry in step 1, so that solid content is 26wt%.

[0029] Step 2, weigh 40g of slurry, add 0.5ml of n-butanol to the slurry, then add 0.2ml of initiator ammonium persulfate and stir for 1min, then add 0.1ml of catalyst tetramethylethylenediamine and stir for 30min, then pour into the mold Middle injection billet.

[0030] Step 3, drying: After surface-drying in natural environment, put it into a blast drying oven at 30°C for drying.

[0031] Step 4, sintering: s...

Embodiment 2

[0034] Step 1, 10wt% ceramic clay, 5wt% silicon dioxide, 10wt% acrylamide, 5wt% N,N-methylenebisacrylamide solvent, and the balance are water and tert-butanol solution with a mass ratio of 0.5 After that, pour it into a ball mill to make a slurry with ball milling for 4 hours.

[0035] Step 1', add the calcium sulfate whisker of gross weight 2wt% in the slurry in step 1, so that the solid content in the present embodiment is 17wt%.

[0036] Step 3, weigh 20g of slurry, add 0.05ml of n-butanol to the slurry, then add 0.5ml of initiator ammonium persulfate and stir for 10min, then add 0.01ml of catalyst tetramethylethylenediamine and stir for 60min, then pour into the mold Middle injection billet.

[0037] Step 4, drying: put it into a blast drying oven at 50°C after being surface-dried in a natural environment.

[0038] Step 5, sintering: set the temperature control program and sinter directly. From room temperature to 110°C at a heating rate of 5°C / min and keep for 30 minut...

Embodiment 3

[0041] Step 1, 8wt% ceramic clay, 10wt% silicon dioxide, 10wt% acrylamide, 5wt% N,N-methylenebisacrylamide solvent, and the balance of water and tert-butanol solution with a mass ratio of 1 After it is ready, pour it into a ball mill to mill for 6 hours, and take out the slurry.

[0042] Step 1', add the calcium sulfate whisker of gross weight 2wt% in the slurry in step 1, so that the solid content in the present embodiment is 20wt%.

[0043] Step 2, weigh 30g of slurry, add 0.2ml of n-butanol to the slurry, then add 0.1ml of initiator ammonium persulfate and stir for 1min, then add catalyst tetramethylethylenediamine 0.01ml and stir for 30min, then pour into the mold Middle injection billet.

[0044] Step 3, drying: put it into a blast drying oven at 40°C after being surface-dried in a natural environment.

[0045] Step 4, sintering: set the temperature control program and sinter directly. The temperature was raised from room temperature to 110°C at a rate of 5°C / min and m...

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Abstract

The invention provides super-hydrophobic foam ceramic and a preparation method thereof. The preparation method comprises the following steps: 1, preparing the following raw materials by weight percent: 10-28% of ceramic clay, 10-28% of SiO2, 5-15% of acrylamide, 2-10% of an N,N-methylene bisacrylamide solvent and the balance of water and a tert-butyl alcohol solution, adding the raw materials into a ball mill, and performing ball-milling for 4 hours to prepare pulp; 2, weighing 20-50 g of the pulp, adding 0.01-1 ml of n-butyl alcohol into the pulp, adding 0.1-1 ml of an initiator-ammonium persulfate, stirring for 0.1-10 minutes, adding 0.01-0.5 ml of a catalyst-tetramethylethylenediamine, stirring for 1-60 minutes, pouring into a mould, and injecting; 3, drying; 4, sintering; 5, producing a high-temperature hydrolysis reaction on a ceramic surface by a silane compound at the hydrolysis temperature of not lower than 20-70 DEG C to prepare the super-hydrophobic foam ceramic. The preparation method is simple in equipment, low in cost, simple in process, good in repeatability and suitable for large-scale production.

Description

technical field [0001] The invention relates to the field of hydrophobic ceramics, in particular to a superhydrophobic foam ceramic and a preparation method thereof. Background technique [0002] In the 1970s, the United States was the first to use alumina and kaolin to successfully develop foam ceramics. The excellent application value of foam ceramics has attracted the attention of the scientific and technological circles, and relevant research work has begun in various countries. Britain, Japan, Germany, Switzerland and other countries have competed to carry out research, the production technology is becoming more and more advanced, and the technical equipment is becoming more and more mechanized and automated. A variety of materials have been developed, which are suitable for different purposes. Foam ceramic filters, such as A12O3, ZrO2, SiC, silicon nitride, boride and other high-temperature foam ceramics, some of which have added certain minerals, such as mullite, cord...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/06C04B35/14C04B33/13C04B35/622
Inventor 崔月华李金桦涂强彭洋潘忠文朱开才钟家祥
Owner CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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