CN105819719A - Enhanced geopolymer and preparation method thereof - Google Patents
Enhanced geopolymer and preparation method thereof Download PDFInfo
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- CN105819719A CN105819719A CN201610141817.XA CN201610141817A CN105819719A CN 105819719 A CN105819719 A CN 105819719A CN 201610141817 A CN201610141817 A CN 201610141817A CN 105819719 A CN105819719 A CN 105819719A
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- polymer
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/243—Mixtures thereof with activators or composition-correcting additives, e.g. mixtures of fly ash and alkali activators
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B12/00—Cements not provided for in groups C04B7/00 - C04B11/00
- C04B12/005—Geopolymer cements, e.g. reaction products of aluminosilicates with alkali metal hydroxides or silicates
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention provides an enhanced geopolymer and a preparation method thereof. The preparation method comprises the following steps: preparing the following raw materials: phosphate and/or polyphosphates, meta-kaolin, fly ash, sodium silicate, an alkaline compound, silicon dioxide, and water, mixing the raw materials according to a certain ratio, grinding the mixed raw materials to obtain uniform slurry, injecting the slurry into a mould, and carrying out maintenance at a room temperature or low temperature (20 to 80 DEG C) to obtain the geopolymer. The geopolymer, which is produced by the provided formula and preparation method, has the advantages of high temperature resistant and chemical product resistant properties, and excellent mechanical properties, the compressive strength can reach 150 MPa or more, and the application requirements of construction material and high temperature coating can be met. Compared with the conventional construction material production technologies, the provided preparation method has the advantages of simple technology, energy saving, environment-friendliness, low cost, and easy operation.
Description
Technical field
The present invention relates to a kind of enhancement mode geo-polymer and preparation method thereof, belong to field of inorganic nonmetal gelled materials.
Background technology
Geo-polymer is to study one of very active Inorganic Non-metallic Materials the most in the world.It is with clay, Industry Waste
Slag or slag etc. are primary raw material, and alkali or acid are exciting agent, through suitable PROCESS FOR TREATMENT, by chemistry under lower temperature conditions
The class Novel Inorganic Polymers material that reaction obtains.Geo-polymer has high, fast, the acid-alkali-corrosive-resisting of hardening of intensity etc. and is better than
The special performance of Portland cement, has the advantages such as abundant, cheap, the saving energy of material simultaneously, therefore causes
The great interest of materials specialist both at home and abroad.
The forming principle of geo-polymer mainly alkali-activator excites silicon and aluminum source material, causes the disconnected of siliconoxygen bond and alumina key
Split-recombinate, form inorganic chain structure, be similar to macromolecular polymerization reaction and form chain structure.The polymerization of geo-polymer is anti-
Should be as follows: the SiO under alkali-activator effect, in silicon and aluminum source material2And Al2O3Covalent bond destroys fracture, is formed similar organic
The oligomeric silicon-oxy tetrahedron of high polymer monomer and aluminum-oxygen tetrahedron；Carry out the process of a polycondensation the most again, these low polyoxy four sides
Body and aluminum-oxygen tetrahedron, with water as medium, reconfigure, and discharge unnecessary water, the network struture system of the Si-O-Al of Cheng Xin.
The three-dimensional net structure of geo-polymer is shared by silicon-oxy tetrahedron and aluminum-oxygen tetrahedron that bridging oxygen is bonded to be formed, this three-dimensional oxidation
Thing network structure determines its premium properties, thus determines its multipurpose.
And current, the comprcssive strength of geology polymer material, at below 100MPa, needs to gather geology by other reinforcing agents
Compound carries out potentiation.And the interpolation of other reinforcing agents, both added cost, and made again processing technique complicate.
Summary of the invention
The technical problem to be solved is the deficiency existed for above-mentioned prior art and provides a kind of enhancement mode geology polymerization
Thing and preparation method thereof, this geo-polymer is formed under conditions of less than 100 DEG C, and has the highest intensity.
The present invention solves that the technical scheme that problem set forth above is used is:
A kind of enhancement mode geo-polymer, its raw materials by weight portion meter includes:, metakaolin 10-80 part, flyash 0-40
Part, waterglass 10-80 part, alkali compounds 5-30 part, silicon dioxide 0-50 part, water 5-30 part, phosphate and or poly
Phosphate 0.1-2 part.
By such scheme, described phosphate is that one or more in sodium dihydrogen phosphate, potassium dihydrogen phosphate, aluminum phosphate etc. are by arbitrarily
The mixture of ratio.
By such scheme, described polyphosphate be one or more in sodium tripolyphosphate and aluminium triphosphate etc. in any proportion
Mixture.
By such scheme, described metakaolin, flyash, silicon dioxide particle diameter all less than 250 mesh.Preferably, described
Metakaolin, flyash, silicon dioxide particle diameter in the range of 250～8000 mesh.
By such scheme, described waterglass contains Multiple Type in GB/T 4209-1996 " industrial waterglass ", and usual modulus is
1～4, it is selected from liquid-1 waterglass (modulus 3.5-3.7), liquid-2 waterglass (modulus 3.1-3.4), liquid-3 waterglass (modulus
2.6-2.9), the one in liquid-4 waterglass (modulus 2.2-2.5) etc..
By such scheme, described alkali compounds is the one in sodium hydroxide, potassium hydroxide and sodium carbonate etc..
The preparation method of above-mentioned enhancement mode geo-polymer, stirs above-mentioned raw materials and becomes maintenance molding after slurry,
To enhancement mode geo-polymer.
The preparation method of above-mentioned enhancement mode geo-polymer, specifically includes following steps:
(1) count by weight, prepare raw material phosphor hydrochlorate and or polyphosphate 0.1-2 part, metakaolin 10-80 part, powder
Coal ash 0-40 part, waterglass 10-80 part, alkali compounds 5-30 part, silicon dioxide 0-50 part, water 5-30 part；
(2) by step (1) ready waterglass and alkali compounds mix homogeneously, then stand and obtain alkali-activator；
(3) by step (1) ready phosphate and or polyphosphate, and metakaolin, flyash and silicon dioxide
Mix homogeneously (when in step (1) flyash and or time the consumption of silicon dioxide is 0, i.e. without adding flyash in this step
With or silicon dioxide), be added thereto to the alkali-activator ground and mixed that step (2) obtains, be simultaneously introduced step (1) prepare
Good water mixing, obtains uniform sizing material；
(4) step (3) gained uniform sizing material is injected mould, react 2-15 days at 20-80 DEG C of lower seal, the most available
Enhancement mode geo-polymer.
Stir and or ultrasonic, to mix homogeneously by such scheme, step (2) use during mixing
By the 1-2 days time stood in such scheme, step (2).
The present invention utilizes phosphate or polyphosphoric acids salt hydrolysis to produce H+, promote that waterglass fast hydrolyzing generates more hydroxyl
Ion, and then promote that the structure of the aluminium oxide in metakaolin and silicon dioxide is disintegrated, make Si-O and Al-O covalent bond be destroyed
Fracture, dissociates [SiO4]4-[AlO4]5-Plasma, then regroups under water and alkali effect, forms Si-O-Al-O
Spacial framework.The more important thing is, discharge H+Phosphate or polyphosphate generate a kind of water-insoluble double salt, from
And free alkali metal ion is wrapped, this double salt becomes the second phase, is evenly distributed in this geo-polymer,
Enhance the mechanical property of geo-polymer, and make geo-polymer have more preferable chemicals-resistant character.
Compared with prior art, the invention has the beneficial effects as follows:
1) in enhancement mode geo-polymer of the present invention, the second phase produced due to phosphate or polyphosphoric acids salt hydrolysis, with
Micro-, nanoscale is dispersed in geo-polymer, enhances the mechanical property of geo-polymer, and its comprcssive strength reaches
More than 150MPa.
2) preparation method of enhancement mode geo-polymer of the present invention, owing to the hydrolyzation catalysis of phosphate or polyphosphate is made
With, accelerate the silica in higher territory and flyash and alumina structural damage, form the chain type inorganic polymer of silicon-oxygen-aluminum
Structure, therefore, shaping speed is fast, and at room temperature or 20～80 DEG C, maintenance 2-15 days is the most plastic.
3) the geo-polymer product that formula of the present invention and preparation method obtain, high temperature resistant, chemicals-resistant, and have
Excellent mechanical property, its comprcssive strength reaches more than 150MPa, meets the use requirement of construction material, high temperature coating.This
High intensity ground polymers preparation method in invention compared with traditional building material production technology, have that technique is simple, save the energy,
Protection environment, low cost, the advantage such as easily operated.
Accompanying drawing explanation
Fig. 1 is the scanning electron microscope (SEM) photograph of the enhancement mode geo-polymer of embodiment 1 preparation.
Detailed description of the invention
In order to be more fully understood that the present invention, it is further elucidated with present disclosure below in conjunction with example, but the present invention not only limits to
In the following examples.
Embodiment 1
A kind of enhancement mode geo-polymer, its raw materials by weight portion meter includes: sodium tripolyphosphate 0.1 part, the 2000 higher ridges of mesh
10 parts of soil, liquid-2 waterglass (modulus 3.1-3.4) 10 parts, sodium hydroxide 5 parts, 5 parts of water.
The preparation method of above-mentioned enhancement mode geo-polymer, specifically includes following steps:
(1) count by weight, prepare raw material sodium tripolyphosphate 0.1 part, 2000 mesh metakaolin 10 parts, liquid-2 waterglass
(modulus 3.1-3.4) 10 parts, sodium hydroxide 5 parts, 5 parts of water；
(2) step (1) ready waterglass and sodium hydroxide are mixed, ultrasonic after stirring, then stand 24h, obtain
Alkali-activator；
(3) by step (1) ready sodium tripolyphosphate and metakaolin mix homogeneously, it is added thereto to step (2) and obtains
The alkali-activator ground and mixed arrived, is simultaneously introduced the mixing of step (1) ready water, obtains uniform sizing material；
(4) step (3) gained uniform sizing material is injected mould, react 15 days at 20 DEG C of lower seals, i.e. can be strengthened
Type geo-polymer.
Intensity test:
Geo-polymer smooth surface that mechanical property prepared by the present embodiment strengthens, flawless, according to GB/T-4740-1999
Ceramic material comprcssive strength experimental technique carries out intensity test, and its comprcssive strength is 151MPa.
From figure 1 it appears that during being prepared geo-polymer by metakaolin, after polyphosphoric acids salt hydrolysis, form the
Two-phase phosphate, this be flower-shaped Particle distribution in geo-polymer matrix, the mechanical strength of geo-polymer is had and changes
Kind effect.
Embodiment 2
A kind of enhancement mode geo-polymer, its raw materials by weight portion meter includes: sodium dihydrogen phosphate 2 parts, the 8000 higher ridges of mesh
Soil 80 parts, 80 parts of 8000 mesh flyash, liquid-4 waterglass (modulus 2.2-2.5) 80 parts, potassium hydroxide 30 parts, 8000
Mesh silicon dioxide 50 parts, 30 parts of water.
The preparation method of above-mentioned enhancement mode geo-polymer, specifically includes following steps:
(1) count by weight, prepare raw material sodium dihydrogen phosphate 2 parts, 8000 mesh metakaolin 80 parts, 8000 mesh fine coal
Ash 80 parts, liquid-4 waterglass (modulus 2.2-2.5) 80 parts, potassium hydroxide 30 parts, 8000 mesh silicon dioxide 50 parts, water
30 parts；
(2) step (1) ready waterglass and potassium hydroxide are mixed, ultrasonic after stirring, then stand 24h, obtain
Alkali-activator；
(3) by step (1) ready sodium dihydrogen phosphate and metakaolin, flyash and silicon dioxide mix homogeneously, Xiang Qi
The alkali-activator ground and mixed that middle addition step (2) obtains, is simultaneously introduced the mixing of step (1) ready water, obtains uniformly
Slurry；
(4) step (3) gained uniform sizing material is injected mould, react 2 days at 80 DEG C of lower seals, i.e. can get enhancement mode
Geo-polymer.
Intensity test:
Geo-polymer smooth surface that mechanical property prepared by the present embodiment strengthens, flawless, according to GB/T-4740-1999
Ceramic material comprcssive strength experimental technique carries out intensity test, and its comprcssive strength is 153MPa.
Embodiment 3
A kind of enhancement mode geo-polymer, its raw materials by weight portion meter includes: aluminium triphosphate 0.4 part, the 250 higher ridges of mesh
41 parts of soil, liquid-1 waterglass (modulus 3.5-3.7) 43 parts, sodium carbonate 6 parts, 250 mesh silica 1 parts, 9 parts of water.
The preparation method of above-mentioned enhancement mode geo-polymer, specifically includes following steps:
(1) count by weight, prepare raw material aluminium triphosphate 0.4 part, 250 mesh metakaolin 41 parts, liquid-1 waterglass
(modulus 3.5-3.7) 43 parts, sodium carbonate 6 parts, 250 mesh silica 1 parts, 9 parts of water；
(2) step (1) ready waterglass and sodium carbonate are mixed, ultrasonic after stirring, then stand 24h, obtain alkali
Exciting agent；
(3) by step (1) ready aluminium triphosphate and metakaolin, silicon dioxide mix homogeneously, it is added thereto to step
Suddenly the alkali-activator ground and mixed that (2) obtain, is simultaneously introduced the mixing of step (1) ready water, obtains uniform sizing material；
(4) step (3) gained uniform sizing material is injected mould, react 10 days at 50 DEG C of lower seals, i.e. can be strengthened
Type geo-polymer.
Intensity test:
Geo-polymer smooth surface that mechanical property prepared by the present embodiment strengthens, flawless, according to GB/T-4740-1999
Ceramic material comprcssive strength experimental technique carries out intensity test, and its comprcssive strength is 159MPa.
Embodiment 4
A kind of enhancement mode geo-polymer, its raw materials by weight portion meter includes: potassium dihydrogen phosphate 1 part, 800 mesh metakaolins
50 parts, 10 parts of 800 mesh flyash, liquid-3 waterglass (modulus 2.6-2.9) 43 parts, potassium hydroxide 10 parts, 10 parts of water.
The preparation method of above-mentioned enhancement mode geo-polymer, specifically includes following steps:
(1) count by weight, prepare raw material potassium dihydrogen phosphate 1 part, 800 mesh metakaolin 50 parts, 800 mesh flyash
10 parts, liquid-3 waterglass (modulus 2.6-2.9) 43 parts, potassium hydroxide 10 parts, 10 parts of water；
(2) step (1) ready waterglass and potassium hydroxide are mixed, ultrasonic after stirring, then stand 24h, obtain
Alkali-activator；
(3) by step (1) ready potassium dihydrogen phosphate and metakaolin, flyash mix homogeneously, it is added thereto to step
(2) the alkali-activator ground and mixed obtained, is simultaneously introduced the mixing of step (1) ready water, obtains uniform sizing material；
(4) step (3) gained uniform sizing material is injected mould, react 7 days at 70 DEG C of lower seals, i.e. can get enhancement mode
Geo-polymer.
Intensity test:
Geo-polymer smooth surface that mechanical property prepared by the present embodiment strengthens, flawless, according to GB/T-4740-1999
Ceramic material comprcssive strength experimental technique carries out intensity test, and its comprcssive strength is 155MPa.
The above is only the preferred embodiment of the present invention, it is noted that for the person of ordinary skill of the art,
On the premise of conceiving without departing from the invention, it is also possible to making some modifications and variations, these broadly fall into the protection model of the present invention
Enclose.
Claims (9)
1. an enhancement mode geo-polymer, it is characterised in that its raw materials by weight portion meter includes: phosphate and or poly
Phosphate 0.1-2 part, metakaolin 10-80 part, flyash 0-40 part, waterglass 10-80 part, alkali compounds 5-30
Part, silicon dioxide 0-50 part, water 5-30 part.
A kind of enhancement mode geo-polymer the most according to claim 1, it is characterised in that described phosphate is biphosphate
One or more in sodium, potassium dihydrogen phosphate, aluminum phosphate mixture in any proportion.
A kind of enhancement mode geo-polymer the most according to claim 1, it is characterised in that described polyphosphate is trimerization
One or both mixture in any proportion in sodium phosphate and aluminium triphosphate.
A kind of enhancement mode geo-polymer the most according to claim 1, it is characterised in that described metakaolin, fine coal
Ash, silicon dioxide particle diameter all less than 250 mesh.
A kind of enhancement mode geo-polymer the most according to claim 4, it is characterised in that described metakaolin, fine coal
Ash, silicon dioxide particle diameter in the range of 250～8000 mesh.
A kind of enhancement mode geo-polymer the most according to claim 1, it is characterised in that described waterglass is industry water glass
Glass, modulus is 1～4.
A kind of enhancement mode geo-polymer the most according to claim 1, it is characterised in that described alkali compounds is hydrogen-oxygen
Change one or more mixture in any proportion in sodium, potassium hydroxide and sodium carbonate.
8. according to the preparation method of the enhancement mode geo-polymer described in any one in claim 1-7, it is characterised in that
Described raw material stirring is uniformly become maintenance molding after slurry, i.e. can get enhancement mode geo-polymer.
9. according to the preparation method of the enhancement mode geo-polymer described in any one in claim 1-7, it is characterised in that
Comprise the steps:
(1) count by weight, prepare raw material phosphor hydrochlorate and or polyphosphate 0.1-2 part, metakaolin 10-80 part,
Flyash 0-40 part, waterglass 10-80 part, alkali compounds 5-30 part, silicon dioxide 0-50 part, water 5-30 part；
(2) step (1) ready waterglass and alkali compounds are mixed, ultrasonic after stirring, then stand and obtain alkali and swash
Send out agent；
(3) by step (1) ready phosphate and or polyphosphate, and metakaolin, flyash and silicon dioxide
Mix homogeneously (when in step (1) flyash and or time the consumption of silicon dioxide is 0, i.e. without adding flyash in this step
With or silicon dioxide), be added thereto to the alkali-activator ground and mixed that step (2) obtains, be simultaneously introduced step (1) prepare
Good water mixing, obtains uniform sizing material；
(4) step (3) gained uniform sizing material is injected mould, react 2-15 days at 20-80 DEG C of lower seal, the most available
Enhancement mode geo-polymer.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106587682A (en) * | 2016-12-06 | 2017-04-26 | 钦州市高新技术产业服务中心 | Geopolymer and preparation method thereof |
| CN106673470A (en) * | 2016-12-09 | 2017-05-17 | 钦州市钦南区科学技术情报研究所 | Geopolymer and preparation method thereof |
| CN107746212A (en) * | 2017-10-18 | 2018-03-02 | 浙江大学 | Modified enhanced ground oligomer gel material of one kind and preparation method thereof |
| CN108373277A (en) * | 2018-03-13 | 2018-08-07 | 盐城工学院 | A kind of epoxy resin roughening metakaolin based geopolymer and preparation method thereof |
| CN109231860A (en) * | 2018-09-26 | 2019-01-18 | 长安大学 | A kind of cementitious material and preparation method thereof |
| CN109704678A (en) * | 2019-01-23 | 2019-05-03 | 广东联城住工装备信息科技有限公司 | The preparation method of ultra-high performance concrete, hollow out component and hollow out component |
| CN111732378A (en) * | 2020-07-06 | 2020-10-02 | 济南大学 | Geopolymer member and preparation method thereof |
| CN112028654A (en) * | 2020-09-14 | 2020-12-04 | 深圳大学 | Baking-free geopolymer composite refractory material and preparation method thereof |
| CN114230249A (en) * | 2021-12-22 | 2022-03-25 | 西安理工大学 | Inorganic polymer mortar and preparation method thereof |
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| US10981828B2 (en) * | 2018-08-22 | 2021-04-20 | The Catholic University Of America | High strength class C fly ash cementitious compositions with controllable setting |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106587682A (en) * | 2016-12-06 | 2017-04-26 | 钦州市高新技术产业服务中心 | Geopolymer and preparation method thereof |
| CN106673470A (en) * | 2016-12-09 | 2017-05-17 | 钦州市钦南区科学技术情报研究所 | Geopolymer and preparation method thereof |
| CN107746212B (en) * | 2017-10-18 | 2019-08-27 | 浙江大学 | A kind of modification enhanced ground oligomer gel material and preparation method thereof |
| CN107746212A (en) * | 2017-10-18 | 2018-03-02 | 浙江大学 | Modified enhanced ground oligomer gel material of one kind and preparation method thereof |
| CN108373277A (en) * | 2018-03-13 | 2018-08-07 | 盐城工学院 | A kind of epoxy resin roughening metakaolin based geopolymer and preparation method thereof |
| CN108373277B (en) * | 2018-03-13 | 2020-12-15 | 盐城工学院 | Epoxy resin toughened metakaolin-based polymer and preparation method thereof |
| CN109231860A (en) * | 2018-09-26 | 2019-01-18 | 长安大学 | A kind of cementitious material and preparation method thereof |
| CN109704678A (en) * | 2019-01-23 | 2019-05-03 | 广东联城住工装备信息科技有限公司 | The preparation method of ultra-high performance concrete, hollow out component and hollow out component |
| CN109704678B (en) * | 2019-01-23 | 2021-12-28 | 广东睿住住工科技有限公司 | Ultra-high performance concrete, hollow component and preparation method of hollow component |
| CN111732378A (en) * | 2020-07-06 | 2020-10-02 | 济南大学 | Geopolymer member and preparation method thereof |
| CN112028654A (en) * | 2020-09-14 | 2020-12-04 | 深圳大学 | Baking-free geopolymer composite refractory material and preparation method thereof |
| CN112028654B (en) * | 2020-09-14 | 2021-09-14 | 深圳大学 | Baking-free geopolymer composite refractory material and preparation method thereof |
| CN114230249A (en) * | 2021-12-22 | 2022-03-25 | 西安理工大学 | Inorganic polymer mortar and preparation method thereof |
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| CN105819719B (en) | 2018-05-01 |
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