CN102320782B - Rice hull ash and metakaolin based polymer composite fireproof paint and preparation method thereof - Google Patents
Rice hull ash and metakaolin based polymer composite fireproof paint and preparation method thereof Download PDFInfo
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- CN102320782B CN102320782B CN2011101435990A CN201110143599A CN102320782B CN 102320782 B CN102320782 B CN 102320782B CN 2011101435990 A CN2011101435990 A CN 2011101435990A CN 201110143599 A CN201110143599 A CN 201110143599A CN 102320782 B CN102320782 B CN 102320782B
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- rice hull
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- hull ash
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses rice hull ash and metakaolin based polymer composite fireproof paint and a preparation method thereof. The paint mainly consists of rice hull ash and alkali-activated metakaolin based polymers. The preparation method comprises the steps that: rice hull ash is used as fillings with the mass parts being 20 to 50 mass parts; the alkali-activated metakaolin based polymers and polyvinyl acetate emulsion are compounded and prepared into adhesion agents with the mass parts being 20 to 40 mass parts; and other auxiliaries and special additives are added and mixed for preparing the paint, wherein the auxiliaries and the special additives comprise the following ingredients in parts by mass: 0 to 10 parts of magnesium hydroxide, 4 to 8 parts of titanium pigment, 0.5 to 2 parts of sodium bentonite, 0.2 to 0.5 part of sodium lignosulphonate, 0.3 to 1 part of gamma-aminopropyl triethoxysilane and 0 to 5 parts of cellulose fibers. The paint and the preparation method have the advantages that the raw material cost is low, in addition, the environment is protected, the preparation process is simple, and the bonding strength and the fireproof performance of products are good.
Description
Technical field
The invention belongs to the preparation field of composite organic-inorganic material, be specifically related to the preparation method of a kind of rice hull ash and metakaolin based polymer composite fireproof paint.
Background technology
Frie retardant coating is along with the following future development of whole coatings industry forward: improve film quality, convenient construction, saving resource, the saving energy and conform.Modern coatings often adopts the different filler of granularity to mix, and mixes grating such as perlite, expanded vermiculite etc., thereby has increased the grinding cost.Rice hull ash has good Micro-aggregate filling effect and pozzolanic activity as a kind of new heat-insulating heat-preserving material, and the reheating linear shrinkage is little, and Thermal Conductivity at High Temperature is low, from heavy and light.China is as producing rice big country, the rice husk aboundresources, and 0.6 hundred million tons, year by-product rice husk can produce approximately 0.1 ~ 0.24 hundred million ton of rice hull ash.The application of rice hull ash has not only enlarged the raw material sources of high-performance fire-resistant coating, and can save the grinding cost, also can reduce simultaneously the environmental disruption of using other mineral materials may cause as filler because of exploitation.
Binding agent commonly used in modern coatings comprises mineral binder bond and organic binder bond.The weathering resistance of mineral binder bond and water tolerance are not good, easily come off, efflorescence; Although the organic binder bond better performances, price general charged is more expensive, and some organic compound combustion toxic substance that can volatilize.The metakaolin base polymers that alkali is excited has made up the deficiency of mineral binder bond as binding agent, also can reduce costs simultaneously, and its adhesive property is higher than the mineral binder bonds such as silicate commonly used, and metakaolin base polymers this as the material of anti-the combustion.Add wherein a small amount of nontoxic aqueous polyvinyl acetate emulsion, can improve the film forming properties of binding agent and the adhesion property of coating and base material.
Summary of the invention
Based on environmental protection, reduce costs and develop the purpose of high-performance fire-resistant coating, the invention provides the preparation method of a kind of rice hull ash and metakaolin based polymer composite fireproof paint.
The object of the invention is achieved through the following technical solutions:
The preparation method of a kind of rice hull ash and metakaolin based polymer composite fireproof paint, it adopts that rice hull ash, alkali excites metakaolin base polymers, aqueous polyvinyl acetate emulsion mix and make, and wherein rice hull ash is as filler, and mass fraction is 20 ~ 50 parts; Metakaolin base polymers and aqueous polyvinyl acetate emulsion that alkali excites are composite as binding agent, and mass fraction is 20 ~ 40 parts.
In the preparation method of above-mentioned rice hull ash and metakaolin based polymer composite fireproof paint, described rice hull ash is to be controlled to burn at 300 ℃～900 ℃ by rice husk to generate in 1 ~ 3 hour.
In the preparation method of above-mentioned rice hull ash and metakaolin based polymer composite fireproof paint, described binding agent is prepared according to the following steps:
(1) kaolin was generated metakaolin in 1 ~ 4 hour 500 ℃～900 ℃ high-temperature calcinations;
(2) NaOH is added in water glass solution the water glass solution of furnishing modulus 1.0～1.6 and concentration 30%～45%, then mix by 2:4～5:4 mass ratio with metakaolin, the metakaolin base polymers that makes that alkali excites;
(3) the metakaolin base polymers and the aqueous polyvinyl acetate emulsion that alkali are excited, 5:1 ~ 10:1 carries out the composite described binding agent that makes in mass ratio.
In the preparation method of above-mentioned rice hull ash and metakaolin based polymer composite fireproof paint, described mixing also comprises adds multiple auxiliary agent and special additive, mix with described filler, binding agent and suitable quantity of water, with the speed high-speed stirring of 1000r/min ~ 4000r/min 0.5 ~ 1 hour, namely get composite fire retardant coating after thing to be mixed is even, wherein the mass fraction of auxiliary agent is: 0 ~ 10 part of magnesium hydroxide, 4 ~ 8 parts of titanium dioxides; The mass fraction of special additive is: 0 ~ 5 part of 0.5 ~ 2 part of sodium bentonite, 0.2 ~ 0.5 part of sodium lignosulfonate, γ-aminopropyl triethoxysilane 0.3-1 part, lignin fibre.
The present invention with respect to effect and the advantage that prior art has is:
(1) the cheap and environmental protection of the raw materials cost of composite fire retardant coating of the present invention, preparation technology is simple, and fire performance is good.
(2) binding strength of coating of composite fire retardant coating of the present invention meets the relevant regulations of cohesive strength in " GB9779-88 Multi wall architectural coatings ", and after high temperature, coating crack is few, difficult drop-off.
(3) lignin fibre of composite fire retardant coating admixture of the present invention for preventing that under normal temperature, coating cracking has good action, has strengthened the sticking power of effects on surface, and lignin fibre is than other mineral fibre and polymer fiber stable performance and environmental protection.
Embodiment
Embodiment 1:
(1) get 283g and control the rice hull ash of burning 2 hours at 500 ℃;
(2) get the metakaolin that 199g generates at 600 ℃ of calcining 2h; 20.2gNaOH is joined in the water glass solution of 100g concentration 29.2%, modulus 3.2, add 29g water, furnishing concentration 30%, modulus are 1.0 water glass solution; Both mixing add the 34.9g aqueous polyvinyl acetate emulsion, stir 150 seconds, make the composite binding agent of organic and inorganic;
(3) with the 71g magnesium hydroxide, the 28g titanium dioxide, 3.5g sodium bentonite, 3.5g sodium lignosulfonate, 3.5g γ-aminopropyl triethoxysilane mixes with the product of step (1) and step (2), adds 31g water, speed with 1000r/min stirred 0.5 hour, namely got composite fire retardant coating after thing to be mixed is even.
The coating layering is applied to the plasterboard of 80mm * 80mm * 8mm, during brushing after first coating surface drying brushing second coating again, coat-thickness is 7mm.Naturally maintenance 7 days under defined terms after drying adopts the vertical combustion method to carry out the fire performance test.The plasterboard back temperature reaches the time (the anti-combustion time of coating) of 220 ℃ for 83min.Observe test specimen after off-test and be subjected to fiery finishing coat, find that the composite fire retardant coating coating crack is less, sintering phenomenon is not serious.
According to " GB9779-88 Multi wall architectural coatings " Plays state bond strength testing method, the cohesive strength that records composite fire retardant coating is 1.06MPa.This measured value is minimum cohesive strength 0.49 MPa of composite coating greater than multi-layer architectural coatings and nitrate under " GB9779-88 Multi wall architectural coatings " specified standards state.
Embodiment 2:
(1) get 371g and control the rice hull ash of burning 3 hours at 650 ℃;
(2) get the metakaolin that 156g generates at 900 ℃ of calcining 3h; 15.3gNaOH is joined in the water glass solution of 100g concentration 29.2%, modulus 3.2, add 2g water, furnishing concentration 35%, modulus are 1.2 water glass solution; Both mixing add the 15g aqueous polyvinyl acetate emulsion, stir 150 seconds, make the composite binding agent of organic and inorganic;
(3) 66g magnesium hydroxide, 42g titanium dioxide, 4.1g sodium bentonite, 4.1g sodium lignosulfonate, 4.1g γ-aminopropyl triethoxysilane, 0.8g lignin fibre are mixed with the product of step (1) and step (2), add 45g water, speed with 3000r/min stirred 0.5 hour, namely got composite fire retardant coating after thing to be mixed is even.
The coating layering is applied to the plasterboard of 80mm * 80mm * 8mm, during brushing after first coating surface drying brushing second coating again, coat-thickness is 7mm.Naturally maintenance 7 days under defined terms after drying adopts the vertical combustion method to carry out the fire performance test.The plasterboard back temperature reaches the time (the anti-combustion time of coating) of 220 ℃ for 87min.Observe test specimen after experiment finishes and be subjected to fiery finishing coat, find that the composite fire retardant coating coating crack is less, sintering phenomenon is not serious.
According to " GB9779-88 Multi wall architectural coatings " Plays state bond strength testing method, the cohesive strength that records composite fire retardant coating is 0.82MPa.This measured value is minimum cohesive strength 0.49 MPa of composite coating greater than multi-layer architectural coatings and nitrate under " GB9779-88 Multi wall architectural coatings " specified standards state.
Embodiment 3:
(1) get 594g and control the rice hull ash of burning 3 hours at 750 ℃;
(2) get the metakaolin that 146g generates at 800 ℃ of calcining 4h; 11.8gNaOH is joined in the water glass solution of 100g concentration 29.2%, modulus 3.2, evaporation 2.5g water, furnishing concentration 35%, modulus are 1.4 water glass solution; Both mixing add the 42g aqueous polyvinyl acetate emulsion, stir 150 seconds, make the composite binding agent of organic and inorganic;
(3) 197g magnesium hydroxide, 47.5g titanium dioxide, 4.7g sodium bentonite, 4.7g sodium lignosulfonate, 5.9g γ-aminopropyl triethoxysilane, 5g lignin fibre are mixed with the product of step (1) and step (2), add 36g water, stirred 0.5 hour with 3000r/min, namely get composite fire retardant coating after thing to be mixed is even.
The coating layering is applied to the plasterboard of 80mm * 80mm * 8mm, during brushing after first coating surface drying brushing second coating again, coat-thickness is 7mm.Naturally maintenance 7 days under defined terms after drying adopts the vertical combustion method to carry out the fire performance test.The plasterboard back temperature reaches the time (fire endurance of coating) of 220 ℃ for 76min.Observe test specimen after experiment finishes and be subjected to fiery finishing coat, find that the composite fire retardant coating coating crack is less, sintering phenomenon is not serious.
According to " GB9779-88 Multi wall architectural coatings " Plays state bond strength testing method, the cohesive strength that records composite fire retardant coating is 0.91MPa.This measured value is minimum cohesive strength 0.49 MPa of composite coating greater than multi-layer architectural coatings and nitrate under " GB9779-88 Multi wall architectural coatings " specified standards state.
Claims (3)
1. the preparation method of a rice hull ash and metakaolin based polymer composite fireproof paint is characterized in that:
The metakaolin base polymers, the aqueous polyvinyl acetate emulsion that adopt that rice hull ash, alkali excites mix and make, and wherein rice hull ash is as filler, and mass fraction is 20 ~ 50 parts; Metakaolin base polymers and aqueous polyvinyl acetate emulsion that alkali excites are composite as binding agent, and mass fraction is 20 ~ 40 parts; Described rice hull ash is to be controlled to burn at 300 ℃～900 ℃ by rice husk to generate in 1 ~ 3 hour; Described binding agent is prepared according to the following steps:
(1) kaolin was generated metakaolin in 1 ~ 4 hour 500 ℃～900 ℃ high-temperature calcinations;
(2) NaOH is added in water glass solution the water glass solution of furnishing modulus 1.0～1.6 and concentration 30%～45%, then mix by 2:4～5:4 mass ratio with metakaolin, the metakaolin base polymers that makes that alkali excites;
(3) the metakaolin base polymers and the aqueous polyvinyl acetate emulsion that alkali are excited, 5:1 ~ 10:1 carries out the composite described binding agent that makes in mass ratio.
2. preparation method according to claim 1, it is characterized in that, described mixing also comprises adds multiple auxiliary agent and special additive, mix with described filler, binding agent and suitable quantity of water, with the speed high-speed stirring of 1000r/min ~ 4000r/min 0.5 ~ 1 hour, namely get composite fire retardant coating after thing to be mixed is even, wherein the mass fraction of auxiliary agent is: 0 ~ 10 part of magnesium hydroxide, 4 ~ 8 parts of titanium dioxides; The mass fraction of special additive is: 0 ~ 5 part of 0.5 ~ 2 part of sodium bentonite, 0.2 ~ 0.5 part of sodium lignosulfonate, γ-aminopropyl triethoxysilane 0.3-1 part, lignin fibre.
3. the rice hull ash and the metakaolin based polymer composite fireproof paint that are made by the described preparation method of claim 1.
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| CN2011101435990A CN102320782B (en) | 2011-05-31 | 2011-05-31 | Rice hull ash and metakaolin based polymer composite fireproof paint and preparation method thereof |
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| CN2011101435990A CN102320782B (en) | 2011-05-31 | 2011-05-31 | Rice hull ash and metakaolin based polymer composite fireproof paint and preparation method thereof |
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| CN102320782A CN102320782A (en) | 2012-01-18 |
| CN102320782B true CN102320782B (en) | 2013-05-15 |
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| CN102775110B (en) * | 2012-07-30 | 2013-12-18 | 济南鲁新新型建材有限公司 | Cementing material with strength grade of above 200MPa and preparation method thereof |
| CN104327614B (en) * | 2014-10-20 | 2016-09-28 | 芜湖县双宝建材有限公司 | A kind of high-performance water-based expanding fire-proof paint |
| CN105481306A (en) * | 2015-12-01 | 2016-04-13 | 浙江湖州父子岭耐火集团有限公司 | New tunnel fireproof paint |
| CN106277980B (en) * | 2016-08-12 | 2018-10-02 | 卓达新材料科技集团威海股份有限公司 | A kind of flyash base polymers fireproof coating and preparation method thereof |
| EP3507414A1 (en) * | 2016-08-30 | 2019-07-10 | Prosetex S.p.A. | Fire-retarding mixture, process for producing the mixture, fabric treated with the mixture and method of treating a fabric with the mixture |
| CN106752143B (en) * | 2016-12-19 | 2019-10-01 | 华南理工大学 | A kind of calcined diatomite Non-expansive fireproof paint |
| CN108929114B (en) * | 2017-05-23 | 2021-07-02 | 中国石油天然气股份有限公司 | Geopolymer coating and preparation method and application thereof |
| CN107265891A (en) * | 2017-07-19 | 2017-10-20 | 沈阳建筑大学 | One kind is using enhanced geopolymer of rice hull ash and preparation method thereof |
| CN108948991A (en) * | 2018-05-19 | 2018-12-07 | 巢湖市翔宇渔具有限公司 | A kind of ANTI-FOULING PAINT FOR FISHING NET of slow release long-acting |
| CN109137609A (en) * | 2018-07-20 | 2019-01-04 | 蚌埠市奥特纸箱机械有限公司 | A method of improving corrugated paper ring Asia intensity |
| CN110305503A (en) * | 2019-05-29 | 2019-10-08 | 华南理工大学 | A kind of flexibly polymers base anticorrosive paint and the preparation method and application thereof |
| CN110526632B (en) * | 2019-09-18 | 2021-01-15 | 武汉大学 | Foam slag based polymer material and preparation method thereof |
| CN111423197A (en) * | 2020-04-15 | 2020-07-17 | 福州市宇心建材科技有限公司 | Single-component alkali-activated cement tunnel fireproof coating and application method thereof |
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| CN101560068A (en) * | 2009-06-03 | 2009-10-21 | 西安建筑科技大学 | Kaolin-slag base geological polymer compound cementing material with enhanced composite organic macromolecule and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101560068A (en) * | 2009-06-03 | 2009-10-21 | 西安建筑科技大学 | Kaolin-slag base geological polymer compound cementing material with enhanced composite organic macromolecule and preparation method thereof |
Non-Patent Citations (1)
| Title |
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| 章云 等."稻壳灰在建筑材料中的应用".《河南建材》.2010,(第1期),第38页. |
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