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Aerogel-loaded bamboo charcoal composite material and its preparation method

A composite material and airgel technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of bamboo charcoal and silica that have not been researched and reported, and achieve the effects of tight compounding, fatigue relief, and physical recovery Effect

Inactive Publication Date: 2013-06-05
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, there is no relevant research and report on the composite of bamboo charcoal and silica airgel.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1, a kind of preparation method of the bamboo charcoal composite material of load airgel, carries out following steps successively:

[0027] 1) Mix and stir 75 parts of diatomite powder and 320 parts of NaOH lye with a concentration of 3mol / L, and extract the liquid phase after standing at 120°C for 7 hours;

[0028] 2), first add 25 parts of bamboo charcoal powder to the liquid phase obtained in step 1) and stir evenly, then add dropwise HCl solution with a concentration of 3mol / L until the pH is 7 to obtain a mixed solution;

[0029] 3) Ultrasonic dispersion of the mixture at a frequency of 60KHz for 10 times, each time for 10 minutes, and the time interval for each ultrasonic dispersion is 3 to 5 minutes;

[0030] 4) Put the ultrasonically dispersed mixture at 45°C for 2 days to obtain a gel;

[0031] 5) After immersing the gel in water for 4 hours, dry it at 90° C. to a constant weight to obtain a bamboo-charcoal composite material loaded with airgel.

...

Embodiment 2

[0033] Embodiment 2, a kind of preparation method of the bamboo charcoal composite material of load airgel, carries out following steps successively:

[0034] 1), 75 parts of diatomite powder and 220 parts of NaOH lye with a concentration of 3mol / L were mixed and stirred, and after standing at 80°C for 4 hours, the liquid phase was extracted;

[0035] 2), first add 30 parts of bamboo charcoal powder to the liquid phase obtained in step 1) and stir evenly, then add dropwise H2O with a concentration of 1mol / L 2 SO 4 solution to pH 5 to obtain a mixed solution;

[0036] 3) Ultrasonic dispersion of the mixture at 60KHz for 10 times, each time for 15 minutes, and the time interval for each ultrasonic dispersion is 3 to 5 minutes;

[0037] 4) Put the ultrasonically dispersed mixture at 50°C for 3 days to obtain a gel;

[0038] 5) After immersing the gel in water for 3 hours, dry it at 80° C. to a constant weight to obtain a bamboo-charcoal composite material loaded with airgel. ...

Embodiment 3

[0040] Embodiment 3, a kind of preparation method of the bamboo charcoal composite material of loading airgel, carries out following steps successively:

[0041] 1), 95 parts of diatomite powder and 280 parts of KOH lye with a concentration of 3mol / L were mixed and stirred, and after standing at 100°C for 5 hours, the liquid phase was extracted;

[0042] 2), first add 30 parts of bamboo charcoal powder to the liquid phase obtained in step 1) and stir evenly, then add dropwise H2O with a concentration of 2mol / L 2 SO 4 solution to pH 6 to obtain a mixed solution;

[0043] 3) Ultrasonic dispersion of the mixture at 60KHz for 5 times, each time for 15 minutes, and the time interval for each ultrasonic dispersion is 3 to 5 minutes;

[0044] 4) Put the ultrasonically dispersed mixture at 60°C for 5 days to obtain a gel;

[0045] 5) After immersing the gel in water for 4 hours, dry it at 100° C. to a constant weight to obtain a bamboo-charcoal composite material loaded with airgel...

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Abstract

The invention discloses a preparation method of an aerogel-loaded bamboo charcoal composite material. The method comprises the following steps in order: 1) mixing 75-95 parts by weight of diatomite powder with 200-300 parts by weight of an alkali solution with a concentration of 3-4mol / L, and leaving the mixture to stand at a temperature of 80-120DEG C for 4-7h, then extracting the liquid phase; 2) first adding 25-35 parts by weight of bamboo charcoal into the liquid phase and mixing them uniformly, then adding an HCL solution or an H2SO4 solution with a concentration of 1-4mol / L dropwisely till pH of 4-7; 3) subjecting the mixed solution to ultrasonic dispersion; 4) leaving the dispersed mixed solution to stand at a temperature of 45-90DEG C for 2-5h, thus obtaining gel; 5) putting the gel in water first, and then drying it. The aerogel-loaded bamboo charcoal composite material prepared by the method of the invention has the characteristics of heat preservation, adsorption, negative ion release and light weight, etc.

Description

technical field [0001] The invention relates to a bamboo charcoal composite material loaded with airgel and a preparation method thereof. Background technique [0002] As an emerging industry, bamboo charcoal has been increasingly used in domestic applications and has gradually penetrated into various fields of people's lives. Bamboo charcoal has the functions of adsorption, negative ion effect, far-infrared radiation and electromagnetic shielding, which greatly enhance its application field. [0003] The manufacture of adsorbents is one of the most widely used applications of bamboo charcoal, followed by raw materials for health care products. With the strengthening of the country and the people's awareness of environmental protection, the research on green building materials has developed rapidly, and the application of bamboo charcoal to building materials has also attracted more and more people's attention, such as the publication numbers CN200510049855.4, CN20091015365...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30
Inventor 郭兴忠李文彦孙赛杨辉樊先平
Owner ZHEJIANG UNIV
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