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Intumescent phosphoric acid-based geopolymer and preparation method thereof

A kind of polymer and expansive technology, applied in the direction of cement production, etc., can solve the problem that geopolymers cannot be widely used, and achieve a significant effect of quick setting

Active Publication Date: 2021-06-29
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a phosphate-based geopolymer with expansibility and quick-setting properties, aiming to solve the problem that geopolymers cannot be widely used in large-scale water conservancy projects and traffic road emergency projects. Provide technical support for the application of materials in such projects

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  • Intumescent phosphoric acid-based geopolymer and preparation method thereof
  • Intumescent phosphoric acid-based geopolymer and preparation method thereof
  • Intumescent phosphoric acid-based geopolymer and preparation method thereof

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Embodiment 1

[0047] (1) Aluminum aluminum ratio of 0.25 is prepared by sol - gel method (Al 2 O 3 -nsio 2 The raw materials used include: nine-water nitrate aluminum (ANN), tetraeth ester (TEOS), anhydrous ethanol (EtOH) and deionized water (DiW); specific steps: First, use deionized water And the mixture of nine-water nitrate aluminum mixed stirred and transparent aluminum solution, deionized water and nine-water nitrate aluminum molar ratio of 30: 1; then prepared transparent silicon aluminum aluminum liquid with anhydrous ethanol and tetraethyl ester, Among them, the molar ratio of tetraethylene ethanol and tetraeth ester is 5: 1; aluminum solution and silicon solutions are composite according to Si / Al = 1.5, that is, 750.26 g of aluminum nine nitrate is 750.26 g, and tetralate is 208.33. g, no water ethanol extract 200.35 g and deionized water 1080g, the specific quality can be adjusted according to the proportion of preparation needs. Subsequently, the mixed aluminum solution was slowly...

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Abstract

The invention discloses an intumescent phosphoric acid-based geopolymer and a preparation method thereof, which belong to the technical field of inorganic nonmetallic materials. The preparation method comprises the following steps of (1) preparing a geopolymer precursor with a silica-alumina ratio of 0.25-3 by a sol-gel method, and (2) by taking acetone as an additive, exciting by utilizing a phosphoric acid solution to generate the intumescent phosphoric acid-based geopolymer. The intumescent phosphoric acid-based geopolymer prepared by the invention has remarkable intumescence and quick-setting property, and the conventional setting time of 12 h can be shortened to 5 min.

Description

Technical field [0001] The present invention relates to the field of inorganic non-metallic materials, and more particularly to an expansion type phosphate-based product polymer and a preparation method thereof. Background technique [0002] As a widely used cement, silicate cement is emitted by large amounts of carbon dioxide during production and use, leading to global warming to exacerbate. The phosphate base polymer is prepared from natural mineral or solid waste, an amorphous and quasi-state three-dimensional network gel containing a silicon oxide, an aluminum oxyuminous tetrahedral, and a phosphate or a phosphate. According to the relevant study, if the generic polymer replaces the traditional silicate cement, the emissions of carbon dioxide will be reduced by 80 times. From the traditional material classification, the phosphate base polymer is an inorganic macromolecular material that is bonded by a non-carbon atom by covalent bond. Due to its special three-dimensional net...

Claims

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Application Information

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IPC IPC(8): C04B12/00
CPCC04B12/005Y02P40/10
Inventor 周伟唐嘉博姬翔
Owner WUHAN UNIV