CN106116425B - A kind of crack-resistant heat-insulation wall construction material and preparation method thereof - Google Patents

A kind of crack-resistant heat-insulation wall construction material and preparation method thereof Download PDF

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CN106116425B
CN106116425B CN201610463164.7A CN201610463164A CN106116425B CN 106116425 B CN106116425 B CN 106116425B CN 201610463164 A CN201610463164 A CN 201610463164A CN 106116425 B CN106116425 B CN 106116425B
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parts
crack
flyash
insulation wall
wall construction
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CN106116425A (en
Inventor
蒋子平
尹万云
金仁才
唐翠红
胡勇
邱勇
孙飞
成刚
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Anhui Tianjinyun Energy Saving and Waterproof Technology Co., Ltd.
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Anhui Tianjinyun Paint Industry Co Ltd
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    • 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
    • C04B28/24Compositions 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 alkyl, ammonium or metal silicates; containing silica sols
    • C04B28/26Silicates of the alkali metals
    • 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
    • C04B20/00Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02Treatment
    • C04B20/023Chemical treatment
    • 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
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/34Non-shrinking or non-cracking materials
    • C04B2111/343Crack resistant materials
    • 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

Abstract

The invention discloses a kind of crack-resistant heat-insulation wall construction material and preparation method thereof, the raw material of the crack-resistant heat-insulation wall construction material includes by weight:400 600 parts of cement, 40 70 parts of silicon powder, 80 220 parts of sierozem power, 80 160 parts of expanded vermiculite, 60 100 parts of sandstone, 60 100 parts of hollow glass micropearl, 40 80 parts of rock wool silk, 30 80 parts of modified coal ash, 60 120 parts of granular polystyrene, 10 20 parts of wood-fibred, 5 10 parts of polypropylene fibre, 30 60 parts of pva powder, 40 80 parts of polymer dispersion powder end, 10 20 parts of cellulose ether.In the present invention, the crack-resistant heat-insulation wall construction material, solve the problems, such as that decorative mortar made of existing exterior-wall heat insulation material is easy to crack and poor durability, realize being incubated, be heat-insulated truly, cracking resistance high-performance.

Description

A kind of crack-resistant heat-insulation wall construction material and preparation method thereof
Technical field
The present invention relates to building material technical field, particularly a kind of thermal-insulating and anti-cracking wall body building material and its preparation side Method.
Background technology
External Thermal Insulation System can bring outstanding energy-saving effect and comfortable living environment, thus people for The long-term behaviour of the system gives very high concern.At present, the protection mortar that external thermal insulation system overcoat uses is mostly crisp Property cement-based material, than it is great, thermal conductivity factor is high, accumulation of heat value is high;And warming plate is mostly organic insulation material, the small matter of its density The soft deformation in ground is big, under being corroded in the external worlds such as long-term cold and hot, cold wet circulation, various stress repetitions, solar radiation, raindrop erosions, Cracking occurs, comes off, the problems such as efflorescence, heat insulating effect are deteriorated, meeting there is presently no engineering can durable years. Because the outer heat preservation system just to have completed is in hot environment, bust heavy rain, insulation material is with wiping one's face protection mortar at nearly 50 degree Cause ess-strain to act under the temperature difference, thus produce cracking.Numerous research, producer are modified to cement-based polymers Effect is split to control, but apply still can not effectively solve problem of Cracking on heat-insulation material surface.
The content of the invention
Based on problem present in background technology, the present invention proposes a kind of crack-resistant heat-insulation wall construction material and its preparation Method, the crack-resistant heat-insulation wall construction material, solve decorative mortar made of existing exterior-wall heat insulation material it is easy to crack and The problem of poor durability, realize being incubated, be heat-insulated truly, cracking resistance high-performance.
A kind of crack-resistant heat-insulation wall construction material, its raw material include by weight:Cement 400-600 parts, silicon powder 40-70 Part, sierozem power 80-220 parts, expanded vermiculite 80-160 parts, sandstone 60-100 parts, hollow glass micropearl 60-100 parts, rock wool silk 40-80 parts, modified coal ash 30-80 parts, granular polystyrene 60-120 parts, wood-fibred 10-20 parts, polypropylene fibre 5-10 parts, gather Vinyl alcohol powder 30-60 parts, polymer dispersion powder end 40-80 parts, cellulose ether 10-20 parts;
Wherein, preparing the method for the modified coal ash includes:Flyash is added to the mixed acid of concentrated nitric acid and the concentrated sulfuric acid In solution, at ultrasound, filter, wash after being cooled to room temperature, drying obtains the flyash of surface active;By the surface active Flyash and silane coupler, which are added in ethanol, to be ultrasonically treated, and is filtered, and washing, drying obtains the flyash of grafting;By institute The flyash for stating grafting adds ultrasonic disperse in DMF, under conditions of nitrogen protection, adds the performed polymer of terminal isocyanate group With catalyst dibutyl tin dilaurate, stirring reaction after heating, chain extender is added, quick stirring, continue to stir after vacuumizing Mix, filter, washing, cured in drying box, obtain the modified coal ash.
In a specific embodiment, the parts by weight of cement can be 420,430,450,460,480,500,520,540, 560、570、580、590;The parts by weight of silicon powder can be 45,48,50,52,55,57,60,61,64,65,67,69;Grey calcium The parts by weight of powder can be 85,95,100,105,115,130,145,160,175,190,195,205,215;Expanded vermiculite Parts by weight can be 85,90,95,100,105,110,115,125,130,135,140,145,155;The parts by weight of sandstone can be with For 65,67,70,71,75,78,80,84,85,86,90,92,95,97;The parts by weight of rock wool silk can be 45,47,50,51, 55、58、60、64、65、66、70、72、75、77;The parts by weight of modified coal ash can be 33,35,38,41,43,47,50, 53、56、59、65、69、72、76、78;The parts by weight of granular polystyrene can be 65,70,76,80,83,88,92,95,102, 110、115;The parts by weight of wood-fibred can be 12,13,14,15,16,17,18,19;The parts by weight of pva powder can be with For 33,35,37,38,41,43,45,47,50,53,56,59;Polymer dispersion powder end parts by weight can be 41,43,47, 49、50、53、54、56、59、65、69、72、76、78;The parts by weight of cellulose ether can be 11,12,13,14,15,16,17, 18、19。
Preferably, preparing the method for the modified coal ash includes:The flyash of the mesh of particle diameter >=20 is added into volume ratio is 1:In 3-5 concentrated nitric acid and the mixed acid solution of the concentrated sulfuric acid, 0.5-3h is ultrasonically treated at 30-50 DEG C, the frequency of ultrasonic wave is 20-40KHz, sound intensity 0.1-0.3W/cm2, filter, wash after being cooled to room temperature, drying obtains the flyash of surface active;Will The flyash and silane coupler of the surface active are added in ethanol, and 3-6h, ultrasonic wave are ultrasonically treated at 80-100 DEG C Frequency be 20-40KHz, sound intensity 0.4-0.6W/cm2, filter, washing, drying obtains the flyash of grafting;Connect described The flyash of cladodification adds ultrasonic disperse 0.5-1h in DMF, under conditions of nitrogen protection, adds the pre-polymerization of terminal isocyanate group Body and catalyst dibutyl tin dilaurate, stirring reaction 1-3h, adds chain extender after being warming up to 60-80 DEG C, is in rotating speed 0.01-0.02h is quickly stirred under conditions of 1000-1200rpm, continues to stir 0.01-0.02h after vacuumizing, uses polytetrafluoroethyl-ne Alkene membrane filtration, washing, cures 1-3h in 100-120 DEG C of drying box, obtains the modified coal ash;Preferably, flyash, Silane coupler, the performed polymer of terminal isocyanate group, the weight proportion of chain extender are 1:0.02-0.05:0.4-0.6:0.1- 0.2。
Preferably, preparing the method for the performed polymer of the terminal isocyanate group includes:PTMEG is warming up to 90-120 DEG C and be dehydrated 3-5h after being evacuated to pressure≤- 0.09Mpa, be cooled to 40-60 DEG C, add isocyanates, be warming up to 80- Stirring reaction 1-3h after 100 DEG C, obtains the performed polymer of terminal isocyanate group.
Preferably, the cement is 42.5 grades of portland cements of P.O and 5-20% by mass percent 80-95% CA-60 aluminate cements form.
Preferably, the particle diameter of the silicon powder and sierozem power all >=200 mesh;The particle diameter of the expanded vermiculite is 1.1- The weight percentage for the expanded vermiculite that 4.7mm, wherein particle diameter are 1.1-2.6mm is 60-80%;The particle diameter of the sandstone is 0.8-1.6mm, it is preferable that the sandstone be quartz sand, dolomite sand, river sand, a kind of in sea sand or at least two it is mixed Compound.
Preferably, the bulk density of the hollow glass micropearl is 150-200kg/m3, thermal conductivity factor 0.028- 0.048W/m ﹒ K.
Preferably, the length of the wood-fibred is 0.5-2mm;The polypropylene fibre is the type that is chopped, and its length is 5- 8mm, a diameter of 38-40mm;Preferably, the weight proportion of wood-fibred and polypropylene fibre is 15-17:6-8.
Preferably, the polymer dispersion powder is last is total to for ethylene-vinyl acetate copolymer, vinyl acetate-versatic acid ethene A kind of in polymers, ethene-vinyl laurate-vinyl chloride copolymer or at least two mixture.
Preferably, the viscosity of the cellulose ether is 180000-200000mPa ﹒ s;Preferably, the cellulose ether is hydroxyl One kind in ethylmethylcellulose, carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl methyl cellulose or at least two Mixture.
A kind of preparation method of crack-resistant heat-insulation wall construction material, it is characterised in that including:By cement, silicon powder, grey calcium Powder, expanded vermiculite, sandstone, pva powder, polymer dispersion powder end and cellulose ether are added in mixer, stir 20- It is well mixed after 30min;Wood-fibred, polypropylene fibre, hollow glass micropearl and rock wool silk are subsequently added into, stirs 3-4min;Again Modified coal ash and granular polystyrene are added, 5-10min is stirred, obtains the crack-resistant heat-insulation wall construction material.
In the present invention, the crack-resistant heat-insulation wall construction material uses the portland cement and aluminate cement of specific proportioning Blended as binder materials, and using the silicon powder of certain content, sierozem power isoreactivity material, thus to cement as gelling The durability of material improves;At the same time, also using expansion polystyrene, hollow glass in the construction material Glass microballon, modified coal ash, expanded vermiculite etc. are used as heat-insulated aggregate, wherein the modified coal ash passes through acid and silane coupler After surface active, through polyurethane grafted intercalation, a kind of brand-new cement inorganic material is formed, recycles itself and glass bead Gradation adjustment effect and parcel sealing process to granular polystyrene, are greatly improved the heat insulating ability of the wall body building material, apply Work and fire protecting performance;At the same time, the modified technique also improves the interface phase of flyash and inorganic coagulation material etc. Capacitive energy, the performances such as intensity, the toughness of whole building material thus can be improved, and silicon powder, sierozem power blend cement and formed Binder materials, than reducing, fragility can obviously reduce for the backfin of its mortar formed, so that the wall body building material Crack resistance is improved.
In the present invention, in addition to from specific binder materials and aggregate, also grown by adding different types of fiber Short collocation, using its random distribution and network structure in the material, disperseing inside the heat-insulation layer that the material is formed should Power, strengthen the pliability, crack resistance, freeze-thawing resistant cyclicity of heat-insulation layer;Especially selection adds polypropylene fibre, and it is in the material Expect spuious arrangement in the mortar of formation, can effectively digest stress caused by internal all directions contraction, the toughness of thermal insulation mortar With crack resistance because the connection function of network of fibers in mortar has obtained larger improvement;It is in addition, also poly- by adjusting in the present invention The volume of the additives such as vinyl alcohol powder, polymer dispersion powder end, cellulose ether, fiber, improve the bonding of the construction material Property, water-retaining property and crack resistance, while it is met heat-insulating property.
Embodiment
Technical scheme is described in detail below by specific embodiment.
Embodiment 1
A kind of crack-resistant heat-insulation wall construction material, its raw material include by weight:400 parts of cement, 70 parts of silicon powder, grey calcium 80 parts of powder, 160 parts of expanded vermiculite, 60 parts of quartz sand, 100 parts of hollow glass micropearl, 40 parts of rock wool silk, 80 parts of modified coal ash, 60 parts of granular polystyrene, 20 parts of wood-fibred, 5 parts of polypropylene fibre, 60 parts of pva powder, ethylene-vinyl acetate copolymer 40 Part, 20 parts of hydroxyethylmethylcellulose;
Wherein, preparing the method for the modified coal ash includes:It is 1 that the flyash of the mesh of particle diameter >=20 is added into volume ratio:3 Concentrated nitric acid and the concentrated sulfuric acid mixed acid solution in, be ultrasonically treated 0.5h at 50 DEG C, the frequency of ultrasonic wave is 40KHz, the sound intensity For 0.1W/cm2, filter, wash after being cooled to room temperature, drying obtains the flyash of surface active;By the powder of the surface active Coal ash and silane coupler are added in ethanol, 3h are ultrasonically treated at 100 DEG C, the frequency of ultrasonic wave is 40KHz, and the sound intensity is 0.4W/cm2, filter, washing, drying obtains the flyash of grafting;The flyash of the grafting is added into ultrasound point in DMF 1h is dissipated, under conditions of nitrogen protection, adds the performed polymer and catalyst dibutyl tin dilaurate of terminal isocyanate group, heating Stirring reaction 3h after to 60 DEG C, adds chain extender, the quick stirring 0.02h under conditions of rotating speed is 1000rpm, after vacuumizing Continue to stir 0.01h, with polytetrafluoroethylene (PTFE) membrane filtration, washing, cure 1h in 120 DEG C of drying box, obtain the modified powder Coal ash;Wherein flyash, silane coupler, the performed polymer of terminal isocyanate group, the weight proportion of chain extender are 1:0.02:0.6: 0.1;The method of the performed polymer of the terminal isocyanate group includes:By PTMEG be warming up to 90 DEG C and be evacuated to pressure≤- 5h is dehydrated after 0.09Mpa, is cooled to 40 DEG C, isocyanates is added, stirring reaction 1h after being warming up to 100 DEG C, obtains holding isocyanide The performed polymer of perester radical;
The cement is 42.5 grades of portland cements of P.O and 20% CA-60 aluminic acid salt solution by mass percent 80% Mud forms;The particle diameter of the silicon powder and sierozem power all >=200 mesh;The particle diameter of the expanded vermiculite is 1.1-4.7mm, wherein grain The weight percentage for the expanded vermiculite that footpath is 1.1-2.6mm is 60%;The particle diameter of the quartz sand is 0.8-1.6mm;It is described The bulk density of hollow glass micropearl is 150kg/m3, thermal conductivity factor is 0.048W/m ﹒ K;The length of the wood-fibred is 0.5mm;The polypropylene fibre is the type that is chopped, and its length is 8mm, a diameter of 38mm;Polymer dispersion powder end for ethene- Acetate ethylene copolymer;The viscosity of the hydroxyethylmethylcellulose is 180000mPa ﹒ s.
Embodiment 2
A kind of crack-resistant heat-insulation wall construction material, its raw material include by weight:600 parts of cement, 40 parts of silicon powder, grey calcium 220 parts of powder, 80 parts of expanded vermiculite, 100 parts of dolomite sand, 60 parts of hollow glass micropearl, 80 parts of rock wool silk, modified coal ash 30 Part, 120 parts of granular polystyrene, 10 parts of wood-fibred, 10 parts of polypropylene fibre, 30 parts of pva powder, vinyl acetate-versatic acid second 80 parts of alkene copolymer, 10 parts of carboxymethyl cellulose;
Wherein, preparing the method for the modified coal ash includes:It is 1 that the flyash of the mesh of particle diameter >=20 is added into volume ratio:5 Concentrated nitric acid and the concentrated sulfuric acid mixed acid solution in, 3h is ultrasonically treated at 30 DEG C, the frequency of ultrasonic wave is 20KHz, and the sound intensity is 0.3W/cm2, filter, wash after being cooled to room temperature, drying obtains the flyash of surface active;By the fine coal of the surface active Ash and silane coupler are added in ethanol, 6h are ultrasonically treated at 80 DEG C, the frequency of ultrasonic wave is 20KHz, sound intensity 0.6W/ cm2, filter, washing, drying obtains the flyash of grafting;The flyash of the grafting is added into ultrasonic disperse in DMF 0.5h, under conditions of nitrogen protection, add the performed polymer and catalyst dibutyl tin dilaurate of terminal isocyanate group, heating Stirring reaction 1h after to 80 DEG C, adds chain extender, the quick stirring 0.01h under conditions of rotating speed is 1200rpm, after vacuumizing Continue to stir 0.02h, with polytetrafluoroethylene (PTFE) membrane filtration, washing, cure 3h in 100 DEG C of drying box, obtain the modified powder Coal ash;Wherein flyash, silane coupler, the performed polymer of terminal isocyanate group, the weight proportion of chain extender are 1:0.05:0.4: 0.2;The method of the performed polymer of the terminal isocyanate group includes:By PTMEG be warming up to 120 DEG C and be evacuated to pressure≤- 3h is dehydrated after 0.09Mpa, is cooled to 60 DEG C, isocyanates is added, stirring reaction 3h after being warming up to 80 DEG C, obtains holding isocyanic acid The performed polymer of ester group;
The cement is 42.5 grades of portland cements of P.O and 5% CA-60 aluminic acid salt solution by mass percent 95% Mud forms;The particle diameter of the silicon powder and sierozem power all >=200 mesh;The particle diameter of the expanded vermiculite is 1.1-4.7mm, wherein grain The weight percentage for the expanded vermiculite that footpath is 1.1-2.6mm is 80%;The particle diameter of the dolomite sand is 0.8-1.6mm;Institute The bulk density for stating hollow glass micropearl is 200kg/m3, thermal conductivity factor is 0.028W/m ﹒ K;The length of the wood-fibred is 2mm;The polypropylene fibre is the type that is chopped, and its length is 5mm, a diameter of 40mm;The viscosity of the carboxymethyl cellulose is 200000mPa ﹒ s.
Embodiment 3
A kind of crack-resistant heat-insulation wall construction material, its raw material include by weight:500 parts of cement, 55 parts of silicon powder, grey calcium 150 parts of powder, 120 parts of expanded vermiculite, 80 parts of sea sand, 80 parts of hollow glass micropearl, 60 parts of rock wool silk, 55 parts of modified coal ash, gather 90 parts of benzene particle, 15 parts of wood-fibred, 7 parts of polypropylene fibre, 45 parts of pva powder, ethene-vinyl laurate-vinyl chloride 60 parts of copolymer, 15 parts of hydroxyethyl cellulose;
Wherein, preparing the method for the modified coal ash includes:It is 1 that the flyash of the mesh of particle diameter >=20 is added into volume ratio:4 Concentrated nitric acid and the concentrated sulfuric acid mixed acid solution in, be ultrasonically treated 1.5h at 40 DEG C, the frequency of ultrasonic wave is 30KHz, the sound intensity For 0.2W/cm2, filter, wash after being cooled to room temperature, drying obtains the flyash of surface active;By the powder of the surface active Coal ash and silane coupler are added in ethanol, 4h are ultrasonically treated at 90 DEG C, the frequency of ultrasonic wave is 30KHz, and the sound intensity is 0.5W/cm2, filter, washing, drying obtains the flyash of grafting;The flyash of the grafting is added into ultrasound point in DMF 0.7h is dissipated, under conditions of nitrogen protection, the performed polymer and catalyst dibutyl tin dilaurate of terminal isocyanate group is added, rises Temperature adds chain extender, quick stirring 0.01h, is vacuumized under conditions of rotating speed is 1100rpm to stirring reaction 2h after 70 DEG C After continue to stir 0.01h, with polytetrafluoroethylene (PTFE) membrane filtration, washing, cure 2h in 110 DEG C of drying box, obtain the modification Flyash;Wherein flyash, silane coupler, the performed polymer of terminal isocyanate group, the weight proportion of chain extender are 1:0.03: 0.5:0.15;The method of the performed polymer of the terminal isocyanate group includes:PTMEG is warming up to 100 DEG C and is evacuated to pressure 4h is dehydrated after power≤- 0.09Mpa, is cooled to 50 DEG C, adds isocyanates, stirring reaction 2h, is held after being warming up to 90 DEG C The performed polymer of NCO;
The cement is 42.5 grades of portland cements of P.O and 15% CA-60 aluminic acid salt solution by mass percent 85% Mud forms;The particle diameter of the silicon powder and sierozem power all >=200 mesh;The particle diameter of the expanded vermiculite is 1.1-4.7mm, wherein grain The weight percentage for the expanded vermiculite that footpath is 1.1-2.6mm is 70%;The particle diameter of the sea sand is 0.8-1.6mm;The sky The bulk density of heart glass microballoon is 180kg/m3, thermal conductivity factor is 0.038W/m ﹒ K;The length of the wood-fibred is 1.5mm; The polypropylene fibre is the type that is chopped, and its length is 7mm, a diameter of 39mm;The viscosity of the hydroxyethyl cellulose is 190000mPa ﹒ s.
Embodiment 4
A kind of crack-resistant heat-insulation wall construction material, its raw material include by weight:450 parts of cement, 60 parts of silicon powder, grey calcium 100 parts of powder, 130 parts of expanded vermiculite, 90 parts of sandstone, 70 parts of hollow glass micropearl, 50 parts of rock wool silk, 60 parts of modified coal ash, gather 80 parts of benzene particle, 16 parts of wood-fibred, 8 parts of polypropylene fibre, 35 parts of pva powder, 50 parts of polymer dispersion powder end, fiber Plain 15 parts of ether;
Wherein, preparing the method for the modified coal ash includes:It is 1 that the flyash of the mesh of particle diameter >=20 is added into volume ratio:4 Concentrated nitric acid and the concentrated sulfuric acid mixed acid solution in, 2h is ultrasonically treated at 45 DEG C, the frequency of ultrasonic wave is 25KHz, and the sound intensity is 0.2W/cm2, filter, wash after being cooled to room temperature, drying obtains the flyash of surface active;By the fine coal of the surface active Ash and silane coupler are added in ethanol, 5h are ultrasonically treated at 85 DEG C, the frequency of ultrasonic wave is 35KHz, sound intensity 0.5W/ cm2, filter, washing, drying obtains the flyash of grafting;The flyash of the grafting is added into ultrasonic disperse in DMF 0.8h, under conditions of nitrogen protection, add the performed polymer and catalyst dibutyl tin dilaurate of terminal isocyanate group, heating Stirring reaction 2h after to 75 DEG C, adds chain extender, the quick stirring 0.02h under conditions of rotating speed is 1100rpm, after vacuumizing Continue to stir 0.02h, with polytetrafluoroethylene (PTFE) membrane filtration, washing, cure 2h in 115 DEG C of drying box, obtain the modified powder Coal ash;Wherein, flyash, silane coupler, the performed polymer of terminal isocyanate group, the weight proportion of chain extender are 1:0.04: 0.5:0.2;The method of the performed polymer of the terminal isocyanate group includes:PTMEG is warming up to 110 DEG C and is evacuated to pressure 4h is dehydrated after power≤- 0.09Mpa, is cooled to 55 DEG C, adds isocyanates, stirring reaction 2h, is held after being warming up to 85 DEG C The performed polymer of NCO;
The cement is 42.5 grades of portland cements of P.O and 10% CA-60 aluminic acid salt solution by mass percent 90% Mud forms;The particle diameter of the silicon powder and sierozem power all >=200 mesh;The particle diameter of the expanded vermiculite is 1.1-4.7mm, wherein grain The weight percentage for the expanded vermiculite that footpath is 1.1-2.6mm is 75%;The particle diameter of the sandstone is 0.8-1.6mm, and described Sandstone is river sand, the mixture of sea sand;The bulk density of the hollow glass micropearl is 170kg/m3, thermal conductivity factor is 0.038W/m ﹒ K;The length of the wood-fibred is 1.6mm;The polypropylene fibre is the type that is chopped, and its length is 6mm, a diameter of 39mm;The polymer dispersion powder end is the mixing of ethylene-vinyl acetate copolymer, vinyl acetate-versatic acid ethylene copolymer Thing;The viscosity of the cellulose ether is 190000mPa ﹒ s;The cellulose ether is hydroxyethyl cellulose, hydroxypropyl methyl fiber The mixture of element.
The preparation method of crack-resistant heat-insulation wall construction material described in above-described embodiment 1-4, including:By cement, silicon powder, Sierozem power, expanded vermiculite, sandstone, pva powder, polymer dispersion powder end and cellulose ether are added in mixer, stirring It is well mixed after 20-30min;Wood-fibred, polypropylene fibre, hollow glass micropearl and rock wool silk are subsequently added into, stirs 3-4min; Modified coal ash and granular polystyrene are added, 5-10min is stirred, obtains the crack-resistant heat-insulation wall construction material.
In work progress, by weight 1:1-1.5 is configured the crack-resistant heat-insulation wall construction material and water, is obtained Crack-resistant heat-insulation wall mortar.
The mortar that crack-resistant heat-insulation wall construction material described in above-described embodiment 1-4 is obtained carries out performance test, as a result It is as follows:
In the present invention, the crack-resistant heat-insulation wall construction material uses the portland cement and aluminate cement of specific proportioning Blended as binder materials, and using the silicon powder of certain content, sierozem power isoreactivity material, thus to cement as gelling The durability of material improves;At the same time, also using expansion polystyrene, hollow glass in the construction material Glass microballon, modified coal ash, expanded vermiculite etc. are used as heat-insulated aggregate, wherein the modified coal ash passes through acid and silane coupler After surface active, through polyurethane grafted intercalation, a kind of brand-new cement inorganic material is formed, recycles itself and glass bead Gradation adjustment effect and parcel sealing process to granular polystyrene, are greatly improved the heat insulating ability of the wall body building material, apply Work and fire protecting performance;At the same time, the modified technique also improves the interface phase of flyash and inorganic coagulation material etc. Capacitive energy, the performances such as intensity, the toughness of whole building material thus can be improved, and silicon powder, sierozem power blend cement and formed Binder materials, than reducing, fragility can obviously reduce for the backfin of its mortar formed, so that the wall body building material Crack resistance is improved.
In the present invention, in addition to from specific binder materials and aggregate, also grown by adding different types of fiber Short collocation, using its random distribution and network structure in the material, disperseing inside the heat-insulation layer that the material is formed should Power, strengthen the pliability, crack resistance, freeze-thawing resistant cyclicity of heat-insulation layer;Especially selection adds polypropylene fibre, and it is in the material Expect spuious arrangement in the mortar of formation, can effectively digest stress caused by internal all directions contraction, the toughness of thermal insulation mortar With crack resistance because the connection function of network of fibers in mortar has obtained larger improvement;It is in addition, also poly- by adjusting in the present invention The volume of the additives such as vinyl alcohol powder, polymer dispersion powder end, cellulose ether, fiber, improve the bonding of the construction material Property, water-retaining property and crack resistance, while it is met heat-insulating property.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto, Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.

Claims (9)

1. a kind of crack-resistant heat-insulation wall construction material, it is characterised in that its raw material includes by weight:Cement 400-600 parts, silicon Micro mist 40-70 parts, sierozem power 80-220 parts, expanded vermiculite 80-160 parts, sandstone 60-100 parts, hollow glass micropearl 60-100 Part, rock wool silk 40-80 parts, modified coal ash 30-80 parts, granular polystyrene 60-120 parts, wood-fibred 10-20 parts, polypropylene fibre 5-10 parts, pva powder 30-60 parts, polymer dispersion powder end 40-80 parts, cellulose ether 10-20 parts;
Wherein, preparing the method for the modified coal ash includes:Flyash is added to the mixed acid solution of concentrated nitric acid and the concentrated sulfuric acid In, it is ultrasonically treated, is filtered after being cooled to room temperature, washed, drying obtains the flyash of surface active;By the powder of the surface active Coal ash and silane coupler, which are added in ethanol, to be ultrasonically treated, and is filtered, and washing, drying obtains the flyash of grafting;By described in The flyash of grafting adds ultrasonic disperse in DMF, under conditions of nitrogen protection, add terminal isocyanate group performed polymer and Catalyst dibutyl tin dilaurate, stirring reaction after heating, adds chain extender, quick stirring, continues to stir after vacuumizing, Filtering, washing, cures in drying box, obtains the modified coal ash.
2. crack-resistant heat-insulation wall construction material according to claim 1, it is characterised in that prepare the modified coal ash Method includes:It is 1 that the flyash of the mesh of particle diameter >=20 is added into volume ratio:In 3-5 concentrated nitric acid and the mixed acid solution of the concentrated sulfuric acid, 0.5-3h is ultrasonically treated at 30-50 DEG C, the frequency of ultrasonic wave is 20-40KHz, sound intensity 0.1-0.3W/cm2, it is cooled to room Filter, wash after temperature, drying obtains the flyash of surface active;The flyash of the surface active and silane coupler are added Into ethanol, 3-6h is ultrasonically treated at 80-100 DEG C, the frequency of ultrasonic wave is 20-40KHz, sound intensity 0.4-0.6W/cm2, Filter, washing, drying obtains the flyash of grafting;The flyash of the grafting is added into ultrasonic disperse 0.5-1h in DMF, Under conditions of nitrogen protection, the performed polymer and catalyst dibutyl tin dilaurate of terminal isocyanate group are added, is warming up to 60- Stirring reaction 1-3h, adds chain extender after 80 DEG C, the quick stirring 0.01- under conditions of rotating speed is 1000-1200rpm 0.02h, continue to stir 0.01-0.02h after vacuumizing, with polytetrafluoroethylene (PTFE) membrane filtration, washing, in 100-120 DEG C of drying box Middle curing 1-3h, obtains the modified coal ash;Flyash, silane coupler, the performed polymer of terminal isocyanate group, chain extender Weight proportion is 1:0.02-0.05:0.4-0.6:0.1-0.2.
3. crack-resistant heat-insulation wall construction material according to claim 1 or 2, it is characterised in that prepare the end isocyanic acid The method of the performed polymer of ester group includes:PTMEG is warming up to 90-120 DEG C and is dehydrated after being evacuated to pressure≤- 0.09Mpa 3-5h, 40-60 DEG C is cooled to, adds isocyanates, stirring reaction 1-3h after being warming up to 80-100 DEG C, obtain isocyanate terminated The performed polymer of base.
4. crack-resistant heat-insulation wall construction material according to claim 1 or 2, it is characterised in that the cement is by quality Percentage 80-95% 42.5 grades of portland cements of P.O and 5-20% CA-60 aluminate cements composition.
5. crack-resistant heat-insulation wall construction material according to claim 1 or 2, it is characterised in that the silicon powder and grey calcium The particle diameter of powder all >=200 mesh;The particle diameter of the expanded vermiculite is 1.1-4.7mm, and wherein particle diameter is 1.1-2.6mm expanded vermiculite Weight percentage be 60-80%;The particle diameter of the sandstone is 0.8-1.6mm, the sandstone be quartz sand, dolomite sand, A kind of in river sand, sea sand or at least two mixture.
6. crack-resistant heat-insulation wall construction material according to claim 1 or 2, it is characterised in that the hollow glass micropearl Bulk density be 150-200kg/m3, thermal conductivity factor is 0.028-0.048W/m ﹒ K.
7. crack-resistant heat-insulation wall construction material according to claim 1 or 2, it is characterised in that the polymer dispersion powder End is ethylene-vinyl acetate copolymer, vinyl acetate-versatic acid ethylene copolymer, ethene-vinyl laurate-vinyl chloride are common A kind of in polymers or at least two mixture.
8. crack-resistant heat-insulation wall construction material according to claim 1 or 2, it is characterised in that the cellulose ether glues Spend for 180000-200000mPa ﹒ s;The cellulose ether is hydroxyethylmethylcellulose, carboxymethyl cellulose, hydroxy ethyl fiber Element, a kind of in hydroxypropyl methyl cellulose or at least two mixture.
9. a kind of preparation method of crack-resistant heat-insulation wall construction material according to claim any one of 1-8, its feature exist In, including:By cement, silicon powder, sierozem power, expanded vermiculite, sandstone, pva powder, polymer dispersion powder end and fiber Plain ether is added in mixer, is well mixed after stirring 20-30min;It is micro- to be subsequently added into wood-fibred, polypropylene fibre, hollow glass Pearl and rock wool silk, stir 3-4min;Modified coal ash and granular polystyrene are added, stirs 5-10min, obtains the cracking resistance insulation Wall body building material.
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