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A kind of styrene-acrylic emulsion toughened geopolymer and preparation method thereof

A technology of styrene-acrylic emulsion and geopolymer, which is applied in the field of styrene-acrylic emulsion toughened geopolymer and its preparation, can solve the problems of general improvement of folding ratio, etc., and achieve improved mechanical properties and excellent flexural and compressive strength And the folding ratio, the effect of improving the brittleness problem

Inactive Publication Date: 2020-04-03
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned 3 patent documents use styrene-acrylic emulsion to modify the gelling material, in fact it is only the mixing of styrene-acrylic emulsion and inorganic gelling material, which is mainly mechanical mixing, and the mechanical properties of the material are strengthened through physical action. The improvement effect of ratio is general

Method used

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  • A kind of styrene-acrylic emulsion toughened geopolymer and preparation method thereof

Examples

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Effect test

Embodiment 1

[0021] A styrene-acrylic emulsion toughened polymer, comprising the following raw materials in parts by weight:

[0022] 100 parts of silicon-aluminum raw material (metakaolin), 70 parts of alkali activator, 0.5 part of toughening agent;

[0023] The preparation method of the alkali activator: 20 parts of sodium hydroxide and 80 parts of water glass solution with a modulus of 3.4 were mixed and stirred until all the sodium hydroxide solids were dissolved, and then left to stand for 24 hours to obtain the alkali activator.

[0024] The preparation method of the toughening agent: add 6 parts of silane coupling agent A-151 to 50 parts of styrene-acrylic emulsion, mix and react at 60°C to obtain the product.

[0025] The preparation method of the above-mentioned styrene-acrylic emulsion toughened polymer: mix and stir the silicon-aluminum raw material and the alkali activator at a speed of 10-50r / min for 2min in parts by weight, then add the toughening agent, Mix and stir for 2 m...

Embodiment 2

[0027] A styrene-acrylic emulsion toughened polymer, comprising the following raw materials in parts by weight:

[0028] 100 parts of silicon-aluminum raw material (metakaolin), 70 parts of alkali activator, 1 part of toughening agent;

[0029] The preparation method of the alkali activator: 20 parts of sodium hydroxide and 80 parts of water glass solution with a modulus of 3.4 were mixed and stirred until all the sodium hydroxide solids were dissolved, and then left to stand for 24 hours to obtain the alkali activator.

[0030] The preparation method of the toughening agent: add 6 parts of silane coupling agent A-151 to 50 parts of styrene-acrylic emulsion, mix and react at 60°C to obtain the product.

[0031] The preparation method of the above-mentioned styrene-acrylic emulsion toughened polymer: mix and stir the silicon-aluminum raw material and the alkali activator at a speed of 10-50r / min for 2min in parts by weight, then add the toughening agent, Mix and stir for 2 min...

Embodiment 3

[0033] A styrene-acrylic emulsion toughened polymer, comprising the following raw materials in parts by weight:

[0034] 100 parts of silicon-aluminum raw material (metakaolin), 70 parts of alkali activator, 2 parts of toughening agent;

[0035] The preparation method of the alkali activator: 20 parts of sodium hydroxide and 80 parts of water glass solution with a modulus of 3.4 were mixed and stirred until all the sodium hydroxide solids were dissolved, and then left to stand for 24 hours to obtain the alkali activator.

[0036] The preparation method of the toughening agent: add 6 parts of silane coupling agent A-151 to 50 parts of styrene-acrylic emulsion, mix and react at 60°C to obtain the product.

[0037] The preparation method of the above-mentioned styrene-acrylic emulsion toughened polymer: mix and stir the silicon-aluminum raw material and the alkali activator at a speed of 10-50r / min for 2min in parts by weight, then add the toughening agent, Mix and stir for 2 mi...

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Abstract

The invention relates to styrene-acrylic emulsion-toughened geopolymer. The styrene-acrylic emulsion-toughened geopolymer comprises the following raw materials in parts by weight: 100 parts of a salicraw material, 35-80 parts of an alkali-activator and 0.5-3 parts of a toughening agent; the alkali-activator is formed by mixing 0-20 parts of sodium hydroxide and 80-100 parts of a water glass solution with a molar ratio of 1.2-3.4; and the toughening agent is silane coupling agent-modified styrene-acrylic emulsion. A production method of the styrene-acrylic emulsion-toughened geopolymer is simple, meanwhile, the salic raw material is effectively recycled, the produced styrene-acrylic emulsion-toughened geopolymer is high in product additional value, high in compressive strength and good intenacity, and has excellent mechanical performance, especially a ratio of bending strength to compressive strength, the problems of large brittleness and a low ratio of bending strength to compressivestrength of geopolymer are effectively improved, and the tenacity is superior to that of ordinary Portland cement.

Description

technical field [0001] The invention belongs to the technical field of geopolymer toughening, and in particular relates to a styrene-acrylic emulsion toughened geopolymer and a preparation method thereof. Background technique [0002] Geopolymer is a new type of high-performance inorganic polymer gelling material, and it is one of the most promising alkali-activated gelling materials. Due to its special inorganic polycondensation three-dimensional oxide network structure, geopolymer materials have better high temperature and mechanical properties than polymer materials, cement, ceramics and metals in many aspects. On the other hand, the preparation process of geopolymer materials has very low energy consumption and waste discharge, and is a sustainable "green material". Alkali-activated geopolymers have better compressive strength, acid and alkali resistance, freeze-thaw resistance, and carbonation resistance than ordinary Portland cement. In addition, geopolymers have the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B12/00C04B7/26C04B7/14B28B1/00B28B11/24
CPCB28B1/00B28B11/24C04B7/14C04B7/24C04B7/243C04B12/005C04B28/006C04B22/00C04B24/42C04B24/26Y02P40/10
Inventor 张长森胡志超杨宇王旭诸华军顾薛苏高杰
Owner YANCHENG INST OF TECH
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