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Fly ash based composite material as well as preparation method and application thereof

A composite material and fly ash technology, which is applied in the field of fly ash-based composite materials and its preparation, can solve the problems of affecting application, easy loss, and poor long-lasting antibacterial performance, and achieve high antibacterial activity, increase added value, Good long-lasting antibacterial effect

Active Publication Date: 2017-11-24
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But generally speaking, the silver ion raw material is relatively expensive, and it is easy to lose at the same time, and the long-lasting antibacterial property is not good.
[0004] Moreover, the color of fly ash has always been the main factor affecting its application as a filling material in various occasions, especially the fluidized bed fly ash, because it has a part of unburned charcoal, so the color is darker, which affects its application in various occasions. Applications in areas with high color requirements

Method used

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  • Fly ash based composite material as well as preparation method and application thereof
  • Fly ash based composite material as well as preparation method and application thereof
  • Fly ash based composite material as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] A method for preparing a fly ash-based composite material, comprising the following steps:

[0027] (1) With fly ash as raw material, the raw material is added to 0.5mol / L hydrochloric acid for pickling, then the pickled raw material is washed with water until the pH value of the eluate reaches 7, and then to the washed Add ethylene glycol, sodium polyacrylate and alkylphenol polyoxyethylene ether to the raw material, the mass ratio of raw material to ethylene glycol, sodium polyacrylate and alkylphenol polyoxyethylene ether is 100:8:2.5:0.6, wet process Grinding until the particle size of the raw material is ≤25 microns (this process is also a dispersion process), and finally a base material slurry with a solid content of 50% is prepared;

[0028] (2) Add a saturated solution of zinc sulfate to the base material slurry first, then slowly add (to reduce the crystallization rate) a saturated solution of barium chloride dropwise at 55°C under stirring conditions, the mate...

Embodiment 2

[0030] A method for preparing a fly ash-based composite material, comprising the following steps:

[0031] (1) With fly ash as raw material, the raw material is added to 0.1mol / L hydrochloric acid for pickling, then the pickled raw material is washed with water until the pH value of the eluate reaches 6, and then to the washed Add ethylene glycol, sodium polyacrylate and alkylphenol polyoxyethylene ether to the raw material, the mass ratio of raw material to ethylene glycol, sodium polyacrylate and alkylphenol polyoxyethylene ether is 100:5:0.5:0.1, wet process Grinding until the particle size of the raw material is ≤25 microns, and finally preparing a base material slurry with a solid content of 45%;

[0032] (2) Add a saturated solution of zinc sulfate to the substrate slurry first, then slowly add a saturated solution of barium chloride dropwise at 50°C under stirring conditions, the solid-liquid ratio of the substrate slurry to the saturated solution of zinc sulfate is 3g / ...

Embodiment 3

[0034] A method for preparing a fly ash-based composite material, comprising the following steps:

[0035] (1) With fly ash as raw material, the raw material is added to 1mol / L hydrochloric acid for pickling, then the pickled raw material is washed with water until the pH value of the eluate reaches 8, and then the washed raw material is added Add ethylene glycol, sodium polyacrylate and alkylphenol polyoxyethylene ether, the mass ratio of raw material to ethylene glycol, sodium polyacrylate and alkylphenol polyoxyethylene ether is 100:10:3:1, wet grinding Treat until the particle size of the raw material is ≤25 microns, and finally prepare a substrate slurry with a solid content of 55%;

[0036] (2) Add a saturated solution of zinc sulfate to the substrate slurry first, then slowly add a saturated solution of barium chloride dropwise at 60°C under stirring conditions, the solid-liquid ratio of the substrate slurry to the saturated solution of zinc sulfate is 10g / 40mL , the s...

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Abstract

The invention discloses a fly ash based composite material, which is prepared from fly ash and zinc hydroxide or zinc oxide coating the surface of the fly ash. The fly ash based composite material is a material of a core-shell structure using the coal ash as a core and using the zinc hydroxide or zinc oxide as a case; the fly ash based composite material has good whiteness; the application range is greatly expanded; the antibacterial activity value is high; the durable antibacterial performance of the zinc oxide is good; the fly ash based composite material can be used for preparing an antibacterial coating; the coating stability is high. The raw material cost is low; the waste material reutilization can be realized; the added value of the fly ash can be greatly improved; the application prospects are very good.

Description

technical field [0001] The invention relates to the field of solid waste recycling and new materials, in particular to a fly ash-based composite material and its preparation method and application. Background technique [0002] Fly ash is a kind of industrial solid waste, which is generally produced from coal-fired enterprises and causes serious pollution to the environment. The high value-added application of fly ash has always been an important content of its resource utilization. On the one hand, it can solve the problem of environmental pollution caused by it. On the other hand, its high value-added can bring profits to enterprises and has relatively good economic benefits. and social benefits. [0003] Fly ash-based antibacterial materials are mainly reported to add silver ions to them, and use silver ions to release slowly on the surface of fly ash to make them antibacterial. But generally speaking, the silver ion raw material is relatively expensive, and it is easy ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/02C08K9/04C08K7/26C09D5/14D01F1/10A01N59/16A01P1/00C09C1/00C09C3/06C09C3/08C09C3/10
CPCA01N59/16C01P2006/60C08K7/26C08K9/02C08K9/04C08K9/08C09C1/0078C09C3/006C09C3/06C09C3/066C09C3/08C09C3/10C09D5/14D01F1/103
Inventor 万祥龙金石
Owner ANHUI UNIV OF SCI & TECH
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