CN104276793A - Ceramsite-fly ash fireproof thermal insulation material and preparation method of ceramsite-fly ash fireproof thermal insulation material - Google Patents
Ceramsite-fly ash fireproof thermal insulation material and preparation method of ceramsite-fly ash fireproof thermal insulation material Download PDFInfo
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- CN104276793A CN104276793A CN201410472074.5A CN201410472074A CN104276793A CN 104276793 A CN104276793 A CN 104276793A CN 201410472074 A CN201410472074 A CN 201410472074A CN 104276793 A CN104276793 A CN 104276793A
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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
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- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention discloses a ceramsite-fly ash fireproof thermal insulation material and a preparation method of the ceramsite-fly ash fireproof thermal insulation material. The fireproof thermal insulation material comprises the following raw materials: ceramsite, raw mineral materials, an alkaline exciting agent, a water-proofing agent, a water reducer and the like, wherein the raw mineral materials account for 70-100wt.% of the fly ash; the other raw mineral materials contain one or more of slag, steel slag, asbestos tailings acid slag, metakaolin, circulating fluidized bed bottom ash and red mud; the ceramsite is 30-100wt.% of mass of the raw mineral materials; the alkaline exciting agent is 40-55wt.% of mass of the raw mineral materials; the water-proofing agent is 1-3wt.% of total mass of the raw mineral materials and glass beads; the water reducer is 1-3wt.% of total mass of the raw mineral materials and glass beads; the ceramsite, the raw mineral materials, the alkaline exciting agent, the water-proofing agent and the water reducer are fully mixed and stirred, can be enclosed into a mold to prefabricate and mold, can also be molded in a casting manner, and are steamed and cured at 50-90 DEG C for 1-24 hours; the unit weight of the obtained fireproof thermal insulation material is 500-1200kg/m<3>; and the compressive strength is 2.0-8.0MPa. The product can be used as a fire-proof material, a thermal insulation material, a sound-proof material, an adiabatic material and the like.
Description
Technical field:
The present invention relates to a kind of lightweight fireproof insulating material and preparation method thereof.
Technical background:
In recent years, China is in the stage of highly energy-consuming, low output, high pollution always, and country, in order to energy-saving and emission-reduction, reduces and pollutes, implement series of measures policy.The industries such as electric power, cement, iron and steel, aluminium processed produce serious superfluous, create a large amount of solid waste simultaneously, and these solid waste, as flyash, slag, slag, red mud etc., urgently large utilization again, the comprehensive regulation, reduce environmental pollution.
At present, the main body of wall fire-retardant heat-insulation material used is of a great variety both at home and abroad, and organic lagging material causes fire again and again, and flameproof effect is poor, and cost is high; Mineral-type fire-retardant heat-insulation material numerous and complicated again, often because of rate war causes high-quality fire-retardant heat-insulation material can not occuping market, particularly A level fp mineral-type lagging material.
In recent years, haydite concrete, warming plate, hollow bricks etc. obtain the extensive approval in market, ceramicite cement building materials has lightweight, fire prevention, insulation, the feature such as high-strength, such material starts emerging at home, start to have occurred that some correlation techniques are invented, as patent of invention CN200410010935.4, CN200810071410.X, CN200810200384.6, CN201010181684.1, CN201010620953.X, CN201110206968.6, CN201110277104.3, CN201110285851.1, CN201110380304.1, CN201210226681.4, CN201210267178.3, CN201210231961.4, CN201210360125.6, CN201210532102.9, CN201220402623.8, CN201310059437.8, CN201310675747, 2, CN201310727156.5 etc., substantially be all using haydite and cement as the main raw material of system, add flyash and some other subsidiary material, industrial solid castoff utilization is less, cement usage quantity is larger, be unfavorable for energy-saving and emission-reduction, comprehensive utilization gives up.Adopt flyash as material of main part in the present invention, profit is useless, cost is low, environmental protection and energy saving, profit in conjunction with flyash is given up and the low thermal conductivity energy of haydite, exploitation haydite-flyash fire-retardant heat-insulation material, useless to building energy conservation, environmental protection, profit, reduce building cost and have extensively deep meaning.
Summary of the invention:
In order to improve flyash and the volume of haydite in fire-retardant heat-insulation material is produced, the invention provides a kind of preparation technology simple, stable performance, Novel ceramsite-flyash fire-retardant heat-insulation material that low temperature is steam-cured and preparation method thereof.
The present invention is achieved by the following technical solutions:
The raw material of fire-retardant heat-insulation material of the present invention, main raw material comprises raw mineral materials, haydite, toughened fiber, alkali-activator, water-resisting agent, water reducer and water-holding agent, and described fire-retardant heat-insulation material is made up of following raw material:
Flyash: account for 70 ~ 100% of raw mineral materials,
One or more in slag, slag, Acid Leaching Residue of Asbestos Tailing, metakaolin, circulating fluid-bed bottom ash, red mud: account for 0 ~ 30% of raw mineral materials,
Haydite: the 30 ~ 100wt.% being equivalent to raw mineral materials quality;
Alkali-activator: the 40 ~ 55wt.% being equivalent to raw mineral materials quality, exciting agent comprises sodium (potassium) water glass, NaOH/KOH, water.The modulus of exciting agent is 1.0 ~ 2.0, and mass concentration is at 15 ~ 40wt.%;
Water-resisting agent: the 1-3wt.% being equivalent to raw mineral materials and glass bead total mass;
Water reducer: the 1-3wt.% being equivalent to raw mineral materials and glass bead total mass.
The preparation method of above-mentioned fire-retardant heat-insulation material of the present invention, comprises step:
1) by haydite, raw mineral materials, alkali-activator, water-resisting agent, water reducer and water mix and blend, 1-10min is stirred altogether;
2) by slip casting in mould, regulate cast diffusibleness 15%;
3) after room of resting put into by grinding tool, under 40 ~ 60 DEG C of environment, the base substrate of slip foaming, multiviscosisty, sclerosis formation intensity>=0.1MPa, base substrate hardness reaches 0.1 ~ 0.2MP
arear end is rested, and the time of resting is at 30 ~ 90min;
4) the base substrate upset demoulding, uses cutting machine to cut, removes unnecessary bed material and liftout;
5) work in-process of well cutting are put into steam-cured still, at temperature 50-90 DEG C, maintain humidity is 70 ~ 99%, and curing time is 1 ~ 24h, obtains finished product after steam-cured end.
Preparation technology of the present invention is simple, excellent property, stable, and low temperature is steam-cured, and cost is lower.
Specific implementation method:
Fire-retardant heat-insulation material of the present invention, its embodiment optimized is, comprise haydite-flyash fire-retardant heat-insulation material, described fire-retardant heat-insulation material is made up of following raw material: flyash is main salic minerals raw material, haydite, alkali-activator, water-resisting agent and water reducer etc., wherein raw mineral materials mainly flyash, other raw mineral materialss have in slag, slag, Acid Leaching Residue of Asbestos Tailing, metakaolin, circulating fluid-bed bottom ash, red mud one or more.Haydite is clay haydite, lytag or haydites of book structure.Alkali-activator is by sodium (potassium) water glass and N
aoH/KOH forms.Water-resisting agent is the aqueous solution of potassium methyl silicate or sodium methyl silicate.Water reducer is naphthalene water reducer or polycarboxylate water-reducer.The proportioning of various raw material is respectively:
Salic minerals raw material: 70 ~ 100wt.% flyash, one or more in the slag of 0 ~ 30%, slag, Acid Leaching Residue of Asbestos Tailing, metakaolin, circulating fluid-bed bottom ash, red mud;
Haydite: the 30 ~ 100wt.% being equivalent to raw mineral materials quality;
Alkali-activator: the 40 ~ 55wt.% being equivalent to raw mineral materials quality, exciting agent comprises sodium (potassium) water glass, NaOH/KOH, water.The modulus of exciting agent is 1.0 ~ 2.0, and mass concentration is at 15 ~ 40wt.%;
Water-resisting agent: the 1-3wt.% being equivalent to raw mineral materials and glass bead total mass;
Water reducer: the 1-3wt.% being equivalent to raw mineral materials and glass bead total mass.
The content of above-mentioned various raw materials also can be other proportioning as required.
Flyash reaches the above flyash requirement of GB II level, Al
2o
3mass content>=20wt.%;
The particle diameter of other raw mineral materialss is 10 μm≤D
50≤ 100 μm, particle fineness 0.080mm tails over≤12 ~ 25%, carbon content≤5%, loss on ignition≤10%;
Haydite is clay haydite, lytag or haydites of book structure, and particle diameter is at 1 ~ 20mm, and unit weight is at 300 ~ 800kg/m
3.
Exciting agent comprises sodium (potassium) water glass, NaOH/KOH, water.The modulus of exciting agent is 1.0 ~ 2.0, and mass concentration is at 15 ~ 40wt.%;
Steam curing temperature is 50-90 DEG C, and maintain humidity is 70 ~ 99%, and curing time is 1 ~ 24h;
In preparation raw material, flyash and alkali-activator amount to contained SiO
2with Al
2o
3mol ratio be: 2.5≤SiO
2/ Al
2o
3≤ 4.5, Na
2o and Al
2o
3mol ratio be: 0.5≤Na
2o/Al
2o
3≤ 2.
The preparation method of above-mentioned fire-retardant heat-insulation material of the present invention, its embodiment optimized can be comprise step:
1) alkali-activator preparation
Select sodium (potassium) water glass and NaOH/KOH to be raw material, NaOH/KOH is dissolved in water, control volumetric molar concentration at 5 ~ 15mol/L; Select sodium (potassium) water glass, controlling modulus is 2 ~ 3.5; The two is mixed, controls the overall modulus of mixture 1.0 ~ 2.0; Stir 1 ~ 10min, be placed in plastic containers, leave standstill 12 ~ 48h.
2) mix and blend
By haydite, raw mineral materials, alkali-activator, water-resisting agent, water reducer and water mix and blend, stir 1-10min altogether, can stir 1,3,5,7,10min etc., until stir;
3) pour into a mould
By slip casting in mould, regulate cast diffusibleness about 15%;
4) rest
After room of resting put into by grinding tool, under 40 ~ 60 DEG C of environment, it can be 40,50,60 DEG C, the base substrate of slip foaming, multiviscosisty, sclerosis formation intensity >=0.1MPa, terminate to rest after base substrate hardness reaches 0.1 ~ 0.2MPa, the time of resting at 30 ~ 90min, can be 30,60,90min etc.;
5) demoulding cutting
The base substrate upset demoulding, uses cutting machine to cut, removes unnecessary bed material and liftout;
6) vapor cure
The work in-process of well cutting are put into steam-cured still, at temperature 50-90 DEG C, can be 50,60,70,80,90 DEG C etc.; Maintain humidity is 70 ~ 99%, can be 70,80,90,99% etc.; Curing time is 1 ~ 24h, obtains finished product after steam-cured end.
The performance perameter of the gas concrete that the present invention obtains can be:
Specific embodiment one:
Measure sodium silicate 350g, modulus is 3.25, and density is 1.38g/ml; Take 40g NaOH and 40g water mixes, then mix with water glass, 1.8g water reducer, 9g water-resisting agent, place 24 hours, as liquid basified exciting agent.Take I grade of flyash 300g as raw mineral materials, liquid basified exciting agent is mixed with solid material, after stirring, adds 150g haydite, stir 3min.Mixed material is poured in steel die or mould of plastics, and sealing, rest at 60 DEG C 60min.The base substrate upset demoulding, uses cutting machine to cut, removes unnecessary bed material and liftout.The work in-process of well cutting are put into steam-cured still, and temperature 90 DEG C, under maintain humidity 90% condition, maintenance 4h, obtains finished product after steam-cured end.The unit weight that gained sample records after 7 days is 1000kg/m
3, ultimate compression strength is 6.9MPa (7d) thermal conductivity is 0.176W/ (mK).
Specific embodiment two:
Measure potash water glass 240g, modulus is 3.25, and density is 1.38g/ml; Take 37g NaOH and 60g water mixes, then mix with water glass, 1.8g water reducer, 18g water-resisting agent, place 24 hours, as liquid basified exciting agent.Take II level flyash 210g, liquid basified exciting agent, as raw mineral materials, mixes with solid material by slag 90g, adds 300g haydite after stirring, and stirs 3min.Be poured into by mixed material in steel die or mould of plastics, sealing, rest at 60 DEG C 30min.The base substrate upset demoulding, uses cutting machine to cut, removes unnecessary bed material and liftout.The work in-process of well cutting are put into steam-cured still, and temperature 100 DEG C, under maintain humidity 80% condition, maintenance 4h, obtains finished product after steam-cured end.The unit weight that gained sample records after 7 days is 600kg/m
3, ultimate compression strength is 3.0MPa (28d), and thermal conductivity is 0.130W/ (m.K).
Specific embodiment three:
Measure potash water glass 240g, modulus is 3.25, and density is 1.65g/ml; Take 45g KOH and 50g water mixes, then mix with water glass, 2.1g water reducer, 12g water-resisting agent, place 12 hours, as liquid basified exciting agent.
Take II level flyash 240g, liquid basified exciting agent, as raw mineral materials, mixes with solid material by metakaolin 60g, adds 130g haydite after stirring, and stirs 3min.Be poured into by mixed material in steel die or mould of plastics, sealing, rest at 40 DEG C 90min.The base substrate upset demoulding, uses cutting machine to cut, removes unnecessary bed material and liftout.The work in-process of well cutting are put into steam-cured still, and at temperature 50 C, under maintain humidity 70% condition, maintenance 12h, obtains finished product after steam-cured end.The unit weight that gained sample records after 7 days is 1150kg/m
3, ultimate compression strength is 7.9MPa (28d), and thermal conductivity is 0.192W/ (m.K).
Specific embodiment four:
Measure sodium silicate 220g, modulus is 3.25, and density is 1.38g/ml; Take 50g NaOH and 80g water mixes, then mix with water glass, 2.7g water reducer, 9g water-resisting agent, place 12 hours, as liquid basified exciting agent.Take II level flyash 270g, liquid basified exciting agent, as raw mineral materials, mixes with solid material, adds 200g haydite after stirring, stir 3min by silicon ash 30g.Be poured into by mixed material in steel die or mould of plastics, sealing, rest at 60 DEG C 30min.The base substrate upset demoulding, uses cutting machine to cut, removes unnecessary bed material and liftout.The work in-process of well cutting are put into autoclave, and at temperature 60 C, under maintain humidity 80% condition, maintenance 12h, obtains finished product after steam-cured end.The unit weight that gained sample records after 7 days is 850kg/m
3, ultimate compression strength is 5.1MPa (28d), and thermal conductivity is 0.161W/ (m.K).
Specific embodiment five:
Measure sodium silicate 300g, modulus is 3.25, and density is 1.38g/ml; Take 40g NaOH and 80g water mixes, then mix with water glass, 3.2g water reducer, 12g water-resisting agent, place 36 hours, as liquid basified exciting agent.Take II level flyash 240g, liquid basified exciting agent, as raw mineral materials, mixes with solid material by red mud 60g, adds 250g haydite after stirring, and stirs 3min.Be poured into by mixed material in steel die or mould of plastics, sealing, rest at 60 DEG C 60min.The base substrate upset demoulding, uses cutting machine to cut, removes unnecessary bed material and liftout.The work in-process of well cutting are put into steam-cured still, and temperature 80 DEG C, under maintain humidity 90% condition, maintenance 12h, obtains finished product after steam-cured end.The unit weight that gained sample records after 7 days is 720kg/m
3, ultimate compression strength is 4.1MPa (28d), and thermal conductivity is 0.152W/ (m.K).
The present invention take flyash as main raw material, and in conjunction with other raw mineral materialss, the chemi-excitation technology of application of advanced and light material compounding technology, prepare a kind of light heat insulation material, and product can be used as fire-retardant material, lagging material, sound-proof material, thermal insulation material etc.
Light heat insulation material prepared by the present invention's application fly ash base raw mineral materials, and manufacture craft is simple, dependable performance, good stability.
The above; be only the embodiment that the present invention optimizes, but protection scope of the present invention is not limited thereto, and is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.
Claims (4)
1. a fire-retardant heat-insulation material, is made up of haydite, raw mineral materials, alkali-activator, water-resisting agent, water reducer.
2. fire-retardant heat-insulation material according to claim 1, described raw mineral materials comprises flyash, described flyash accounts for 70 ~ 100wt.% of raw mineral materials, other raw mineral materialss contain in slag, slag, Acid Leaching Residue of Asbestos Tailing, metakaolin, circulating fluid-bed bottom ash, red mud one or more; Described haydite is clay haydite, lytag or haydites of book structure; Described toughened fiber is the one in polypropylene fibre, polyacrylonitrile fibre or wood fibre; Described water-resisting agent is the aqueous solution of potassium methyl silicate or sodium methyl silicate; Described water reducer is naphthalene water reducer or polycarboxylate water-reducer.
3. lightweight fireproof insulating material according to claim 2, comprises the raw material of following quality proportioning:
Flyash: account for 70 ~ 100% of raw mineral materials,
One or more in slag, slag, Acid Leaching Residue of Asbestos Tailing, metakaolin, circulating fluid-bed bottom ash, red mud: account for 0 ~ 30% of raw mineral materials;
Haydite: the 30 ~ 100wt.% being equivalent to raw mineral materials quality;
Alkali-activator: the 40 ~ 55wt.% being equivalent to raw mineral materials quality, exciting agent comprises sodium (potassium) water glass, NaOH/KOH, water.The modulus of exciting agent is 1.0 ~ 2.0, and mass concentration is at 15 ~ 40wt.%;
Water-resisting agent: the 1-3wt.% being equivalent to raw mineral materials and glass bead total mass;
Water reducer: the 1-3wt.% being equivalent to raw mineral materials and glass bead total mass.
4. fire-retardant heat-insulation material according to claim 2, during reaction raw materials mixing, needs additional a certain amount of water, makes H
2o/Na
2the mol ratio of O is 10 ~ 20;
Flyash reaches the above flyash requirement of GB II level, Al
2o
3mass content>=20wt.%;
The particle diameter of other raw mineral materialss is 10 μm≤D
50≤ 100 μm, particle fineness 0.080mm tails over≤12 ~ 25%, carbon content≤5%, loss on ignition≤10%;
Haydite is clay haydite, lytag or haydites of book structure, and particle diameter is at 5 ~ 20mm, and unit weight is at 300 ~ 500kg/m
3.
Exciting agent comprises sodium (potassium) water glass, NaOH/KOH, water.The modulus of exciting agent is 1.0 ~ 2.0, and mass concentration is at 15 ~ 40wt.%;
Steam curing temperature is 50-90 DEG C, and maintain humidity is 70 ~ 99%, and curing time is 1 ~ 24h;
In preparation raw material, flyash and alkali-activator amount to contained SiO
2with Al
2o
3mol ratio be: 2.5≤SiO
2/ Al
2o
3≤ 4.5, Na
2o and Al
2o
3mol ratio be: 0.5≤Na
2o/Al
2o
3≤ 2.
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| CN106277983A (en) * | 2016-08-15 | 2017-01-04 | 贵州安顺家喻新型材料股份有限公司 | A kind of baking-free insulating brick and preparation method thereof |
| CN107344831A (en) * | 2017-08-09 | 2017-11-14 | 中国地质大学（武汉） | A kind of fiber reinforcement glass bead geo-polymer and preparation method thereof |
| CN107365137A (en) * | 2017-08-02 | 2017-11-21 | 合肥广民建材有限公司 | A kind of flyash fire-retardant heat-insulation material and preparation method thereof |
| CN108658488A (en) * | 2018-05-03 | 2018-10-16 | 宋俊芳 | A kind of radiation protection thermal insulation board and preparation method thereof |
| CN114409337A (en) * | 2022-01-29 | 2022-04-29 | 新疆土木工程检测科技有限公司 | Method for preparing self-heat-insulation building block by air-set sand and grouting |
| CN115159943A (en) * | 2022-07-04 | 2022-10-11 | 中国建筑第五工程局有限公司 | Fireproof light heat-insulating material and preparation method and application thereof |
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| CN107344831A (en) * | 2017-08-09 | 2017-11-14 | 中国地质大学（武汉） | A kind of fiber reinforcement glass bead geo-polymer and preparation method thereof |
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| CN114409337A (en) * | 2022-01-29 | 2022-04-29 | 新疆土木工程检测科技有限公司 | Method for preparing self-heat-insulation building block by air-set sand and grouting |
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| CN115159943B (en) * | 2022-07-04 | 2023-10-03 | 中国建筑第五工程局有限公司 | Fireproof light heat-insulating material and preparation method and application thereof |
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Application publication date: 20150114 |