CN110317018A - A kind of heat insulating porous plate of inorganic plasticizing of ultralow water absorption rate and preparation method thereof - Google Patents

A kind of heat insulating porous plate of inorganic plasticizing of ultralow water absorption rate and preparation method thereof Download PDF

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Publication number
CN110317018A
CN110317018A CN201910554003.2A CN201910554003A CN110317018A CN 110317018 A CN110317018 A CN 110317018A CN 201910554003 A CN201910554003 A CN 201910554003A CN 110317018 A CN110317018 A CN 110317018A
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parts
cement
absorption rate
water absorption
water
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Inventor
郑娟荣
赵振波
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Zhengzhou Technology University High-Technology Technology Co Ltd
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Zhengzhou Technology University High-Technology Technology Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00Producing shaped prefabricated articles from the material
    • B28B1/50Producing shaped prefabricated articles from the material specially adapted for producing articles of expanded material, e.g. cellular concrete
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B17/00Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
    • B28B17/02Conditioning the material prior to shaping
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/04Portland cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C04B28/08Slag cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/20Mortars, concrete or artificial stone characterised by specific physical values for the density
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/30Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
    • C04B2201/32Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

Abstract

The invention belongs to building material technical fields, specifically disclose a kind of heat insulating porous plate of inorganic plasticizing of ultralow water absorption rate, it is characterised in that: be made of the raw material of following parts by weight: 40-200 parts of cement, 20-100 parts of super-fine minerals admixture, 1-30 parts of chemical addition agent, 40-225 parts of water, 0.4-4 parts of fiber, 1-10 parts of polymer, 0.03-10 parts of foam stabilizer, 1-10 parts of aglite, 10-50 parts of obtained insulation boards of foam apparent density be 80-180kg/m3, compression strength 0.3-0.8MPa, tensile strength is greater than 0.10MPa, and volume water absorption rate is less than 5.0%, and coefficient of softing is greater than 0.70, and thermal coefficient is 0.038-0.053W/m K.It can be used for exterior insulation, roof heat insulation system and insulation and decoration integrated plate etc..

Description

A kind of heat insulating porous plate of inorganic plasticizing of ultralow water absorption rate and preparation method thereof
Technical field
The invention belongs to building material technical field more particularly to a kind of heat insulating porous plates of inorganic plasticizing of ultralow water absorption rate And preparation method thereof.
Background technique
Currently, practical architectural engineering mainly does external wall insulation using expansion polyphenyl plate and rock wool board, expansion polyphenyl plate holds Easy firing, rock wool board are easy water suction and fall off, and cement foam concrete insulation board has many advantages, such as light thermal-insulation, fire prevention, fire resisting, often Apparent density with cement foam concrete is 300kg/m3~1200kg/m3, compression strength is 0.5MPa ~ 15.0MPa, thermally conductive system Number is greater than 0.085W/ (m K), can be used for producing the fields such as building block, light weight board.The performance of cement foam concrete and density it Between have close association, generally, with the reduction of density, the thermal coefficient of cement foam concrete is reduced, heat preservation and every Sound is effect improved, but compression strength reduces, the cracky in transport, work progress.China's professional standard " protect by cement base foam Warm plate " I type (Gan Midu≤180kg/m of (JC/T 2200-2013) regulation3) and II type (Gan Midu≤250kg/m3) insulation board The cement base cystosepiment of volume water absorption rate≤10%, chemical blowing (dioxygen Water blown) currently on the market is II template, its body Product water absorption rate is slightly below 10%.As the density of cement foam concrete reduces, significant disadvantage is exactly that water absorption rate is big, is used for Winter is easy freeze-thaw damage when exterior insulation, and other performance is caused to reduce.
Summary of the invention
The object of the present invention is to provide heat insulating porous plate of inorganic plasticizing of a kind of ultralow water absorption rate and preparation method thereof, preparations Product have that thermal coefficient is low, non-ignitable, high-strength light, and raw material sources are extensive, cheap, can be used for outside exterior wall protecting Temperature, roof heat insulation system and insulation and decoration integrated plate etc..
In order to achieve the above objectives, the technical solution adopted by the present invention is that:
A kind of heat insulating porous plate of inorganic plasticizing of ultralow water absorption rate, is made of the raw material of following parts by weight: 40-200 parts of cement, 20-100 parts of super-fine minerals admixture, 1-30 parts of chemical addition agent, 40-225 parts of water, 0.4-4 parts of fiber, 1-10 parts of polymer, 0.03-10 parts of foam stabilizer, 1-10 parts of aglite, 10-50 parts of obtained insulation boards of foam apparent density be 80-180kg/ m3, compression strength 0.3-0.8MPa, tensile strength is greater than 0.10MPa, and less than 5.0%, coefficient of softing is greater than volume water absorption rate 0.70, thermal coefficient is 0.038-0.053W/m K.
Further, the cement is portland cement, ordinary portland cement, portland slag cement, flyash-Si One of acid salt cement, Portland pozzolana cement and composite Portland cement;The super-fine minerals admixture is fine coal One of ash and agstone, and the granularity of flyash and agstone is not higher than 30 μm;The chemical addition agent be by Waterproofing agent, the swelling agent mixture of 10-35:40-60 in mass ratio;The water is city tap-water;The fiber is concrete Synthetic fibers;The polymer is pure-acrylic emulsion, vinyl acetate emulsion, ethylene-vinyl acetate copolymer emulsion or redispersible One of latex powder;The foam stabilizer is one of aluminium-magnesium silicate, sodium bentonite, cellulose ether, polyvinyl alcohol;It is described Aglite is partial size 1mm-5mm, apparent density 6kg/m3-20kg/m3Expansion polystyrene;The foam is by table The mixing of the ratio of face activating agent class foaming agent and water 1:30-50 in mass ratio, and the foam prefabricated by nitrogen compressor.
Further, the waterproofing agent is triethanolamine stearate compound, and swelling agent is sulphate aluminium cement, alunite One of with magnesia;The triethanolamine stearate compound is stearic acid and triethanolamine is 1:1 ingredient in molar ratio, It is solid powder through drying, grinding in the compound for being slightly soluble in water that 70-80 DEG C obtains after reacting 4 hours.
A kind of preparation method of the heat insulating porous plate of inorganic plasticizing of ultralow water absorption rate, comprising the following steps:
(1) preparation A material: by cement, super-fine minerals admixture, chemical addition agent and water 40-200:20-100:1- in mass ratio 30:40-225 is uniformly mixed and ball milling 45min-60min obtains A material;
(2) preparation B material: by A material, fiber, polymer, foam stabilizer, aglite 105-250:0.8-2:2-5 in mass ratio: 0.05-5:2-5, which is successively uniformly mixed, obtains B material;
(3) it prepares C material: foaming agent and water 1:30-50 in mass ratio is uniformly mixed and pass through pressure with the nitrogen for being 5 DEG C with temperature Contracting machine foams to obtain foam C material;
(4) it prepares finished product: two kinds of B, C material 100-250:18-35 in mass ratio is injected into die for molding after mixing evenly, form Band mould stands 6-10h at 5-40 DEG C of room temperature afterwards, in 50-75 DEG C of at a temperature of curing in the mold 3d-7d or in 50-75 DEG C of temperature Demoulded after lower curing in the mold 1-2d, the green body after demoulding 50-75 DEG C at a temperature of continue to conserve 3d-7d, by making after maintenance is good With requiring to carry out finished product cutting.
Further, the partial size that A expects in the step (1) is not more than 45 μm, and the wet milling device is ball mill, colloid mill One of with Ball-stirring mill.
Further, in the step (4) during maintenance, need to be covered moulding box or package green body with film.
Present invention has the advantage that
1. cement base slurry can increase the ratio of mud, the ratio of mud of cement base slurry of the invention can increase to by wet-milling 0.75, moreover it is possible to obtain uniform, not stratified, not bleeding cement slurry, the foam concrete of preparation does not defoam;And common cement The ratio of mud of base slurry is that the 0.4-0.5(ratio of mud is excessive, and cement slurry layering causes foam concrete to defoam), with common water The preparation process of mud foam concrete compares, and present invention solid raw material used when preparing the cement base slurry of same volume subtracts It is few, to reduce density;
2. aglite (EPS particle) of the invention further decreases the density of foam concrete, simultaneously because EPS particle is producing Skeleton function is played in product, keeps small product size more stable, it is not easy to crack, in addition, polymer, fiber and EPS particle in the present invention Form a flexible three-dimensional network micro-structure, this be further ensured that extremely-low density insulation board do not crack, not dusting;
3. the waterproofing agent in the present invention is a kind of triethanolamine stearate compound, it is in molar ratio with triethanolamine by stearic acid 1:1 ingredient, the compound for being slightly soluble in water after reacting 4 hours at 70-80 DEG C, is solid powder through drying, grinding, stearic Molecular formula is CH3(CH2)16COOH, the molecular formula of triethanolamine are N (C2H4OH)3, when stearic acid and triethanolamine in molar ratio It is reacted 4 hours for 1:1 ingredient and at 70-80 DEG C, the carboxyl (- COOH) in stearic acid and hydroxyl (- OH) meeting in triethanolamine Ester hair reaction (- O-) occurs and is condensed out a molecular water, therefore, also keeps 2 in each triethanolamine stearate compound Hydroxyl (- OH), the compound is together with cement slurry when ball milling, and under the action of mechanical force, compound is gradually dissolved into water, Wherein calcium ion (the Ca in hydroxyl (- OH) complexing cement product2+), to promote the aquation of cement, increase cement slurry solidification Intensity afterwards, in addition, after cement slurry solidification, stearic hydrophobic group (CH3(CH2)16CO-) it is covered on the cement slurry of hardening The surface of body, ensure that the persistence of ultralow the volume water absorption rate and waterproofness of product, and conventional waterproof agent (such as calcium stearate and has Machine silicon etc.) it is the surface for being covered on hardened cement paste, durability difference is simultaneously uneven, through in a few years just losing waterproof effect;
4. the heat insulating porous plate of inorganic plasticizing of ultralow water absorption rate of the invention is a kind of material that do not burn compared with expansion polyphenyl plate Material, durability is more preferable, and the two heat insulation effect is suitable, so, the heat insulating porous plate of inorganic plasticizing of ultralow water absorption rate of the invention can To replace expansion polyphenyl plate for exterior insulation completely;Compared with rock wool board, the inorganic plasticizing of ultralow water absorption rate of the invention Low energy consumption for the preparation process of heat insulating porous plate, technique is simpler, cheap, and the latter is lower than the former water absorption rate, heat preservation is imitated Fruit is more preferable, stronger with the cohesive force of foundation wall, and the two is incombustible material, so, the inorganic modeling of ultralow water absorption rate of the invention Changing heat insulating porous plate can replace rock wool board for exterior insulation completely;
5. the present invention is when preparing foam, surfactant-based foaming agent is made of hydrophobic group and hydrophilic radical, mixes surface The water of activating agent class foaming agent just generates bubble under gas stirring, the surface of bubble is the water of one layer of hydrophilic radical containing foaming agent Film, foaming agent gas of the hydrophobic group in bubble in, since drying apparent density of the invention is 80-180kg/m3, gas Steep that wall is very thin, and air bubble is easy to increase and rupture with temperature, leads to the reduction of properties, and temperature is 5 DEG C by the present invention The compressed nitrogen and expanding foam solution (i.e. containing the water of foaming agent) that nitrogen is generated by compressor mix the hair that merga pass fills steel wire lump It steeps rifle and generates minute bubbles, the gas in bubble is nitrogen, since nitrogen is in extremely-low density (i.e. dry density 80-180kg/m3) protect Warm plate accounts for volume about 90% and temperature is 5 DEG C, lower than temperature (≤30 DEG C of cement slurry), in addition, the thermal expansion coefficient of nitrogen It is lower, so nitrogen gas is not easy to expand in abscess, it is easy to get closed abscess;
6. raw materials abundance, cheap, simple process, production energy consumption are low in the present invention, industrialization easy to accomplish Production.
Specific embodiment
Embodiment 1
A kind of heat insulating porous plate of inorganic plasticizing of ultralow water absorption rate, is made of the raw material of following parts by weight: 40-200 parts of cement, 20-100 parts of super-fine minerals admixture, 1-30 parts of chemical addition agent, 40-225 parts of water, 0.4-4 parts of fiber, 1-10 parts of polymer, 0.03-10 parts of foam stabilizer, 1-10 parts of aglite, 10-50 parts of obtained insulation boards of foam apparent density be 80-180kg/ m3, compression strength 0.3-0.8MPa, tensile strength is greater than 0.10MPa, and less than 5.0%, coefficient of softing is greater than volume water absorption rate 0.70, thermal coefficient is 0.038-0.053W/m K.
Further, the cement is portland cement, ordinary portland cement, portland slag cement, flyash-Si One of acid salt cement, Portland pozzolana cement and composite Portland cement;The super-fine minerals admixture is fine coal One of ash and agstone, and the granularity of flyash and agstone is not higher than 30 μm;The chemical addition agent be by Waterproofing agent, the swelling agent mixture of 10-35:40-60 in mass ratio;The water is city tap-water;The fiber is concrete Synthetic fibers;The polymer is pure-acrylic emulsion, vinyl acetate emulsion, ethylene-vinyl acetate copolymer emulsion or redispersible One of latex powder;The foam stabilizer is one of aluminium-magnesium silicate, sodium bentonite, cellulose ether, polyvinyl alcohol;It is described Aglite is partial size 1mm-5mm, apparent density 6kg/m3-20kg/m3Expansion polystyrene;The foam is by table The mixing of the ratio of face activating agent class foaming agent and water 1:30-50 in mass ratio, and the foam prefabricated by compressor by nitrogen.
Further, the waterproofing agent is triethanolamine stearate compound, and swelling agent is sulphate aluminium cement, alunite One of with magnesia;The triethanolamine stearate compound is stearic acid and triethanolamine is 1:1 ingredient in molar ratio, It is solid powder through drying, grinding in the compound for being slightly soluble in water that 70-80 DEG C obtains after reacting 4 hours;
A kind of preparation method of the heat insulating porous plate of inorganic plasticizing of ultralow water absorption rate, is added by cement, super-fine minerals admixture, chemistry Add agent and water 40:20:1:40 in mass ratio uniformly mixed and ball milling 45min obtains A material;By A material, fiber, polymer, foam stabilizing Agent, aglite 105:0.8:2:0.05:2 in mass ratio, which are uniformly mixed, obtains B material;Foaming agent and water 1:30 in mass ratio are mixed It closes uniformly and foams to obtain foam C material by compressor with temperature for 5 DEG C of nitrogen;Then by two material of B, C in mass ratio 100: 35 inject after mixing evenly die for molding, after molding, band mould 8h is stood at 20-30 DEG C of room temperature, be sent at a temperature of 75 DEG C Maintenance 1d after demould, the green body after demoulding 50 DEG C at a temperature of continue conserve 7d.Measurement product drying apparent density be 80kg/m3, compression strength 0.3MPa, tensile strength 0.10MPa, volume water absorption rate 4.8%, coefficient of softing 0.70, thermal coefficient For 0.038W/m K.
Embodiment 2
Embodiment 2 difference from example 1 is that: by cement, super-fine minerals admixture, chemical addition agent and water press matter Amount is uniformly mixed than 200:100:30:225 and ball milling 60min obtains A material;By A material, fiber, polymer, foam stabilizer, lightweight bone Material 250:2:5:5:5 in mass ratio, which is uniformly mixed, obtains B material;Foaming agent and water 1:50 in mass ratio are uniformly mixed and use temperature It foams to obtain foam C material by compressor for 5 DEG C of nitrogen;Then two material of B, C 250:18 in mass ratio is infused after mixing evenly After entering die for molding, molding, band mould 6h is stood at 35-40 DEG C of room temperature, demould, take off after conserving 2d at a temperature of being sent into 50 DEG C Green body after mould 75 DEG C at a temperature of continue to conserve 3d, the drying apparent density for measuring product is 180kg/m3, compression strength For 0.8MPa, tensile strength 0.15MPa, volume water absorption rate 3.0%, coefficient of softing 0.90, thermal coefficient is 0.053W/m K.
Embodiment 3
Embodiment 3 difference from example 1 is that: by cement, super-fine minerals admixture, chemical addition agent and water press matter Amount is uniformly mixed than 100:60:10:120 and ball milling 56min obtains A material;By A material, fiber, polymer, foam stabilizer, aglite 175:1:3:1:5 in mass ratio, which is uniformly mixed, obtains B material;Foaming agent and water 1:35 in mass ratio are uniformly mixed and are with temperature 5 DEG C of nitrogen foams to obtain foam C material by compressor;Then two material of B, C 185:20 in mass ratio is injected after mixing evenly 10h is stood after die for molding, molding, with mould at 5-10 DEG C of room temperature, curing in the mold 3d at a temperature of being sent into 75 DEG C.Measurement produces The drying apparent density of product is 135kg/m3, compression strength 0.55MPa, tensile strength 0.12MPa, volume water absorption rate 4.0%, Coefficient of softing 0.85, thermal coefficient are 0.045W/m K.
Embodiment 4
Embodiment 3 difference from example 1 is that: by cement, super-fine minerals admixture, chemical addition agent and water press matter Amount is uniformly mixed than 200:40:30:190 and ball milling 50min obtains A material;By A material, fiber, polymer, foam stabilizer, aglite 140:1:3:1:3 in mass ratio, which is uniformly mixed, obtains B material;Foaming agent and water 1:40 in mass ratio are uniformly mixed and are with temperature 5 DEG C of nitrogen foams to obtain foam C material by compressor;Then two material of B, C 140:30 in mass ratio is injected after mixing evenly 9h is stood after die for molding, molding, with mould at 11-19 DEG C of room temperature, demoulds, demoulds after conserving 2d at a temperature of being sent into 50 DEG C Green body afterwards 50 DEG C at a temperature of continue conserve 7d, measure product drying apparent density be 100kg/m3, compression strength is 0.40MPa, tensile strength 0.11MPa, volume water absorption rate 4.5%, coefficient of softing 0.75, thermal coefficient are 0.040W/m K.
Embodiment 5
Embodiment 5 difference from example 1 is that: by cement, super-fine minerals admixture, chemical addition agent and water press matter Amount is uniformly mixed than 180:80:20:196 and ball milling 60min obtains A material;By A material, fiber, polymer, foam stabilizer, aglite 230:1:3:4:5 in mass ratio, which is uniformly mixed, obtains B material;Foaming agent and water 1:40 in mass ratio are uniformly mixed and are with temperature 5 DEG C of nitrogen foams to obtain foam C material by compressor;Then two material of B, C 170:20 in mass ratio is injected after mixing evenly 7h is stood after die for molding, molding, with mould at 31-34 DEG C of room temperature, curing in the mold 5d at a temperature of being sent into 60 DEG C.Measurement produces The drying apparent density of product is 130kg/m3, compression strength 0.45MPa, tensile strength 0.13MPa, volume water absorption rate 4.0%, Coefficient of softing 0.80, thermal coefficient are 0.044W/m K.
Embodiment 6
Embodiment 6 difference from example 1 is that: by cement, super-fine minerals admixture, chemical addition agent and water press matter Amount is uniformly mixed than 150:80:20:175 and ball milling 60min obtains A material;By A material, fiber, polymer, foam stabilizer, aglite 200:1:3:4:5 in mass ratio, which is uniformly mixed, obtains B material;Foaming agent and water 1:40 in mass ratio are uniformly mixed and are with temperature 5 DEG C of nitrogen foams to obtain foam C material by compressor;Then two material of B, C 150:25 in mass ratio is injected after mixing evenly 8h is stood after die for molding, molding, with mould under room temperature (20-30 DEG C), curing in the mold 6d at a temperature of being sent into 55 DEG C.Measurement The drying apparent density of product is 120kg/m3, compression strength 0.40MPa, tensile strength 0.12MPa, volume water absorption rate 4.5%, coefficient of softing 0.78, thermal coefficient is 0.043W/m K.

Claims (6)

1. a kind of heat insulating porous plate of inorganic plasticizing of ultralow water absorption rate, it is characterised in that: be made of the raw material of following parts by weight: 40-200 parts of cement, 20-100 parts of super-fine minerals admixture, 1-30 parts of chemical addition agent, 40-225 parts of water, 0.4-4 parts of fiber, The apparent density of 1-10 parts of polymer, 0.03-10 parts of foam stabilizer, 10-50 parts of 1-10 parts of aglite, foam obtained insulation boards For 80-180kg/m3, compression strength 0.3-0.8MPa, for tensile strength greater than 0.10MPa, volume water absorption rate is soft less than 5.0% Change coefficient and be greater than 0.70, thermal coefficient is 0.038-0.053W/m K.
2. the heat insulating porous plate of inorganic plasticizing of ultralow water absorption rate as described in claim 1, it is characterised in that: the cement is silicon Acid salt cement, ordinary portland cement, portland slag cement, Portland fly ash cement, Portland pozzolana cement and One of composite Portland cement;The super-fine minerals admixture is one of flyash and agstone, and flyash 30 μm are not higher than with the granularity of agstone;The chemical addition agent is by waterproofing agent, swelling agent 10-35:40- in mass ratio 60 mixture;The water is city tap-water;The fiber is the synthetic fibers of concrete;The polymer is pure C cream One of liquid, vinyl acetate emulsion, styrene-acrylic emulsion, ethylene-vinyl acetate copolymer emulsion or redispersable latex powder;The foam stabilizing Agent is one of aluminium-magnesium silicate, sodium bentonite, cellulose ether, polyvinyl alcohol;The aglite be partial size 1mm-5mm, Apparent density 6kg/m3-20kg/m3Expansion polystyrene;The foam be by surfactant-based foaming agent and water by The ratio of mass ratio 1:30-50 mixes, and the foam prefabricated by nitrogen compressor.
3. the heat insulating porous plate of inorganic plasticizing of ultralow water absorption rate as claimed in claim 2, it is characterised in that: the waterproofing agent is Triethanolamine stearate compound, swelling agent are one of sulphate aluminium cement, alunite and magnesia;The stearic acid three Ethyl alcohol amine compound is stearic acid and triethanolamine is 1:1 ingredient in molar ratio, is obtained after reacting 4 hours at 70-80 DEG C micro- It is dissolved in the compound of water, is solid powder through drying, grinding.
4. a kind of preparation method of the heat insulating porous plate of inorganic plasticizing of the ultralow water absorption rate as described in claim 1-3, feature It is, comprising the following steps:
(1) preparation A material: by cement, super-fine minerals admixture, chemical addition agent and water 40-200:20-100:1- in mass ratio 30:40-225 is uniformly mixed and ball milling 45min-60min obtains A material;
(2) preparation B material: by A material, fiber, polymer, foam stabilizer, aglite 105-250:0.8-2:2-5 in mass ratio: 0.05-5:2-5, which is successively uniformly mixed, obtains B material;
(3) it prepares C material: foaming agent and water 1:30-50 in mass ratio is uniformly mixed and pass through compression with the nitrogen that temperature is 5 DEG C Machine foams to obtain foam C material;
(4) it prepares finished product: two kinds of B, C material 100-250:18-35 in mass ratio is injected into die for molding after mixing evenly, form Band mould stands 6-10h at 5-40 DEG C of room temperature afterwards, in 50-75 DEG C of at a temperature of curing in the mold 3d-7d or in 50-75 DEG C of temperature Demoulded after lower curing in the mold 1-2d, the green body after demoulding 50-75 DEG C at a temperature of continue to conserve 3d-7d, by making after maintenance is good With requiring to carry out finished product cutting.
5. the preparation method of the heat insulating porous plate of inorganic plasticizing of ultralow water absorption rate as claimed in claim 4, it is characterised in that: institute It states the partial size that A expects in step (1) and is not more than 45 μm, the wet milling device is one of ball mill, colloid mill and Ball-stirring mill.
6. the preparation method of the heat insulating porous plate of inorganic plasticizing of ultralow water absorption rate as claimed in claim 4, it is characterised in that: institute It states in step (4) during maintenance, needs to be covered moulding box or package green body with film.
CN201910554003.2A 2019-06-25 2019-06-25 A kind of heat insulating porous plate of inorganic plasticizing of ultralow water absorption rate and preparation method thereof Pending CN110317018A (en)

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