CN104446605A - Waterproof heat-insulating aerated brick and preparation method thereof - Google Patents

Abstract

The invention discloses a waterproof heat-insulating aerated brick, which is prepared from the following raw materials in parts by weight: 0.4-0.6 part of polyferric sulphate, 0.2-0.3 part of tributyl acetylcitrate, 6-9 parts of basalt fibers, 7-9 parts of gypsum, 30-36 parts of flyash, 5-6 parts of aerated aluminite powder, 9-11 parts of cement, 4-5 parts of iron ore milltailings, 10-12 parts of quicklime, 8-10 parts of a modified walnut shell, 15-20 parts of basic magnesium carbonate, 1-2 parts of triphenyl phosphate and a proper amount of water. The aerated brick disclosed by the invention has excellent electrical insulating property, corrosion resistance, fire resistance, high-temperature resistance, heat-insulating property and fire prevention and heat insulation properties through addition of the basalt fibers and basic magnesium carbonate; through use of the modified walnut shell, the heat insulation effect is enhanced, the water resistance is good, the weight is reduced, the anti-seismic property is increased, and meanwhile, the water reducing effect is good.

Description

A kind of fireproof heat insulating aerated bricks and preparation method thereof

Technical field

The invention belongs to brick field, particularly relate to a kind of fireproof heat insulating aerated bricks and preparation method thereof.

Background technology

Aerated bricks is also called air-entrained concrete building block, application very extensive, is mainly used in the load-bearing wallings such as the materials for wall in machinery plant and covil construction, infilled wall, floor and roof boarding and non-bearing material and filling enclosure wall around.

Current aerated bricks has become the leading product of building material industry, and country progressively prohibits the use clay solid brick, is instead exactly air-entrained concrete building block gradually, autoclaved brick.

Aerated bricks have lightweight, thermal and insulating performance good, shock resistance is strong, good processability, have certain high thermal resistance, good, the adaptable feature of sound-proofing properties, can according to the different starting material in locality, different condition is carried out amount body and is surely made, raw material sources is extensive, river sand, flyash, ore in sand form etc. can be selected, suit measures to local conditions, can be salvaged, environmental, really turn waste into wealth.

But along with the development of building trade, buildings is more and more higher, moulding is more and more peculiar, require all to increase to the intensity, density, shrinkage value, frost resistance etc. of aerated bricks, improving constantly in addition along with people's living standard, also more and more higher to the requirement of environment, there is higher requirement to the heat-insulating property of buildings, sound absorption qualities, radioactivity, even require that buildings has the performance of body health benefits, therefore as required, the aerated bricks developing excellent performance is more imperative.

Summary of the invention

The object of the present invention is to provide a kind of fireproof heat insulating aerated bricks and preparation method thereof, this aerated bricks has excellent electrical insulating property, anticorrosive, flame resistant, high temperature resistant, adiabatic and fireproof heat insulating performance.

Technical scheme of the present invention is as follows:

A kind of fireproof heat insulating aerated bricks, is characterized in that being made up of the raw material of following weight part: bodied ferric sulfate 0.4-0.6, tributyl acetylcitrate 0.2-0.3, basalt fibre 6-9, gypsum 7-9, flyash 30-36, aerating aluminium powder 5-6, cement 9-11, adopting iron ore tailings 4-5, unslaked lime 10-12, modification nut-shell 8-10, magnesium basic carbonate 15-20, triphenylphosphate 1-2, water are appropriate;

Described modification nut-shell is made up of the raw material of following weight part: nut-shell 14-17, slag wool 1-2, water glass 0.2-0.3, gas phase aluminium sesquioxide 0.4-0.5, SULPHUR POWDER 0.2-0.3, epoxy acrylate 0.8-1, vinyl cyanide 0.3-0.5, Rizinsan K2 A2 0.2-0.3, trolamine 0.1-0.2, SILICA FUME 1-2, multicellular glass powder 1-2, high-efficiency water-reducing agent of poly-carboxylic acid 2-3, ammonium persulphate 0.08-0.1, sewer oil 2-3; Making method is: walnut shell flour is broken into 100-200 order particle, spray into Rizinsan K2 A2, sewer oil while stirring, mix rear placement 2-3 hour, mix with slag wool, water glass, gas phase aluminium sesquioxide, SULPHUR POWDER, epoxy acrylate, vinyl cyanide, SILICA FUME, multicellular glass powder again, be heated to 75-80 DEG C, add other remaining components again, dispersion grinding 30-40 minute, to obtain final product.

The preparation method of described fireproof heat insulating aerated bricks, is characterized in that comprising the following steps:

(1) by cement, adopting iron ore tailings, unslaked lime, gypsum, magnesium basic carbonate, flyash mixing, send into grinding in ball grinder and become 50-100 order particle, mix with the composition except aerating aluminium powder again, be that 0.57-0.58 adds water by ratio of water to material, stir, add aerating aluminium powder again, stir and obtain slurry;

(2) slurry that (1) step obtains is poured in mould, obtain brick idiosome;

(3) brick idiosome is put into steam-cured still to vacuumize, then in 1.7-1.9 hour, pass into steam equably, make the temperature of steam-cured indoor rise to 170-180 DEG C, pressure reaches 11-13MPa, keeps constant 10-11 hour;

(4) let off steam equably in 1.7-1.9 hour, make the temperature of steam-cured indoor be down to less than 70 DEG C, go out still, place 28-30 days and get final product.

Beneficial effect of the present invention

Aerated bricks of the present invention, by adding basalt fibre, magnesium basic carbonate, has excellent electrical insulating property, anticorrosive, flame resistant, high temperature resistant, adiabatic and fireproof heat insulating performance; By using modification nut-shell, enhancing effect of heat insulation, water-tolerant, alleviating weight, adding anti-seismic performance, water-reducing effect is good simultaneously.

Embodiment

A kind of fireproof heat insulating aerated bricks, is made up of the raw material of following weight part (kilogram): bodied ferric sulfate 0.5, tributyl acetylcitrate 0.2, basalt fibre 8, gypsum 8, flyash 34, aerating aluminium powder 5.7, cement 10, adopting iron ore tailings 4.5, unslaked lime 11, modification nut-shell 9, magnesium basic carbonate 18, triphenylphosphate 1.5, water are appropriate;

Described modification nut-shell is made up of the raw material of following weight part (kilogram): nut-shell 15, slag wool 1.5, water glass 0.2, gas phase aluminium sesquioxide 0.5, SULPHUR POWDER 0.3, epoxy acrylate 0.9, vinyl cyanide 0.4, Rizinsan K2 A2 0.2, trolamine 0.2, SILICA FUME 1.5, multicellular glass powder 1.5, high-efficiency water-reducing agent of poly-carboxylic acid 2.5, ammonium persulphate 0.09, sewer oil 2.5; Making method is: walnut shell flour is broken into 160 order particles, spray into Rizinsan K2 A2, sewer oil while stirring, mix rear placement 2.5 hours, mix with slag wool, water glass, gas phase aluminium sesquioxide, SULPHUR POWDER, epoxy acrylate, vinyl cyanide, SILICA FUME, multicellular glass powder again, be heated to 78 DEG C, add other remaining components again, dispersion grinding 35 minutes, to obtain final product.

The preparation method of described fireproof heat insulating aerated bricks, comprises the following steps:

(1) by cement, adopting iron ore tailings, unslaked lime, gypsum, magnesium basic carbonate, flyash mixing, send into grinding in ball grinder and become 70 order particles, then mix with the composition except aerating aluminium powder, be 0.58 add water by ratio of water to material, stir, then add aerating aluminium powder, stir and obtain slurry;

(2) slurry that (1) step obtains is poured in mould, obtain brick idiosome;

(3) brick idiosome is put into steam-cured still to vacuumize, then in 1.8 hours, pass into steam equably, make the temperature of steam-cured indoor rise to 176 DEG C, pressure reaches 12MPa, keeps constant 10 hours;

(4) let off steam equably in 1.7 hours, make the temperature of steam-cured indoor be down to 70 DEG C, go out still, place 30 days and get final product.

Experimental data:

The density of this aerated bricks is 640kg/m3, refractory temperature is 710 DEG C, thermal conductivity is 0.14W/(m DEG C), adopt showerhead respectively to the thick clay tile wall of 240mm and aerating brick wall spray, clay tile wall all soaked into after 12 hours, the aerating brick wall degree of depth that seeps water after spraying 72 hours is 80mm, and ultimate compression strength is 6.5Mpa, sound absorption coefficient 0.4.

Claims (2)

1. a fireproof heat insulating aerated bricks, is characterized in that being made up of the raw material of following weight part: bodied ferric sulfate 0.4-0.6, tributyl acetylcitrate 0.2-0.3, basalt fibre 6-9, gypsum 7-9, flyash 30-36, aerating aluminium powder 5-6, cement 9-11, adopting iron ore tailings 4-5, unslaked lime 10-12, modification nut-shell 8-10, magnesium basic carbonate 15-20, triphenylphosphate 1-2, water are appropriate;

Described modification nut-shell is made up of the raw material of following weight part: nut-shell 14-17, slag wool 1-2, water glass 0.2-0.3, gas phase aluminium sesquioxide 0.4-0.5, SULPHUR POWDER 0.2-0.3, epoxy acrylate 0.8-1, vinyl cyanide 0.3-0.5, Rizinsan K2 A2 0.2-0.3, trolamine 0.1-0.2, SILICA FUME 1-2, multicellular glass powder 1-2, high-efficiency water-reducing agent of poly-carboxylic acid 2-3, ammonium persulphate 0.08-0.1, sewer oil 2-3; Making method is: walnut shell flour is broken into 100-200 order particle, spray into Rizinsan K2 A2, sewer oil while stirring, mix rear placement 2-3 hour, mix with slag wool, water glass, gas phase aluminium sesquioxide, SULPHUR POWDER, epoxy acrylate, vinyl cyanide, SILICA FUME, multicellular glass powder again, be heated to 75-80 DEG C, add other remaining components again, dispersion grinding 30-40 minute, to obtain final product.

2. the preparation method of fireproof heat insulating aerated bricks according to claim 1, is characterized in that comprising the following steps:

(1) by cement, adopting iron ore tailings, unslaked lime, gypsum, magnesium basic carbonate, flyash mixing, send into grinding in ball grinder and become 50-100 order particle, mix with the composition except aerating aluminium powder again, be that 0.57-0.58 adds water by ratio of water to material, stir, add aerating aluminium powder again, stir and obtain slurry;

(2) slurry that (1) step obtains is poured in mould, obtain brick idiosome;

(3) brick idiosome is put into steam-cured still to vacuumize, then in 1.7-1.9 hour, pass into steam equably, make the temperature of steam-cured indoor rise to 170-180 DEG C, pressure reaches 11-13MPa, keeps constant 10-11 hour;

(4) let off steam equably in 1.7-1.9 hour, make the temperature of steam-cured indoor be down to less than 70 DEG C, go out still, place 28-30 days and get final product.