CN105948642B - The modified expanded perlite insulation board and its production method of a kind of hydrophobic - Google Patents

The modified expanded perlite insulation board and its production method of a kind of hydrophobic Download PDF

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Publication number
CN105948642B
CN105948642B CN201610280632.7A CN201610280632A CN105948642B CN 105948642 B CN105948642 B CN 105948642B CN 201610280632 A CN201610280632 A CN 201610280632A CN 105948642 B CN105948642 B CN 105948642B
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parts
expanded perlite
insulation board
modified expanded
hydrophobic
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CN105948642A (en
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安武
梅春河
张巍
魏燕
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Microtek Engineering Materials (xinyang) Co Ltd
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Microtek Engineering Materials (xinyang) 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
    • C04B28/02Compositions 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/24Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28CPREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/003Methods for mixing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28CPREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • 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
    • C04B20/04Heat treatment
    • C04B20/06Expanding clay, perlite, vermiculite or like granular 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
    • 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
    • C04B20/10Coating or impregnating
    • C04B20/1051Organo-metallic compounds; Organo-silicon compounds, e.g. bentone
    • 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
    • C04B2111/20Resistance against chemical, physical or biological attack
    • C04B2111/28Fire resistance, i.e. materials resistant to accidental fires or high temperatures
    • 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
    • C04B2111/40Porous or lightweight 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
    • 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
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

The invention discloses the modified expanded perlite insulation board and its production method of a kind of hydrophobic, include the component of following parts by weight meter:10 20 parts of 20 30 parts of cement, 58 parts of flyash, 25 parts of propyl trimethoxy silicane, 5 10 parts of polyacrylate dispersion, 50 70 parts of modified expanded perlite, 0.7 2.9 parts of neopelex, 5 10 parts of additive, 13 parts of quick lime, 0.1 0.5 parts of PP fibers, 0.5 2 parts of hydroxypropyl methyl cellulose, 5 10 parts of bentonite and water.Modified expanded perlite insulation board of the present invention is effectively utilized industrial and mineral dead meal using cement, flyash, bentonite, PP fibers and other organic and inorganic things as raw material, and without addition poisonous and harmful substance, it is environmentally protective.The raw material sources of modified expanded perlite insulation board of the present invention are extensive, cost is low, simple production process, easily operated, disclosure satisfy that the demand of different construction materials, have good social and economic benefit.

Description

The modified expanded perlite insulation board and its production method of a kind of hydrophobic
Technical field
The present invention relates to the modified expanded perlite insulation board and its production method of a kind of hydrophobic, belong to building material technology Field.
Background technology
Building energy conservation is the industry that national industrial policies are given special assistance to.At present, energy-saving building materials are broadly divided into inorganic guarantor The warm light bone material of lightweight aggregate and organic heat-insulating, but the characteristics of due to chemical material matter, whether inorganic system or organic System, can not all take into account the requirement of properties of heat preservation and energy saving and security against fire at the same time:For heat-insulating property, organic material is better than nothing Machine material;Consider from Performance-based fire, A grades of anti-flammability thermal insulation materials are only selection again.In recent years, inorganic heat insulation material For middle expanded perlite with its excellent fire retardancy energy, the advantage such as environmentally safe is just progressively becoming the head of inorganic external wall thermal-insulation material Choosing.
Expanded perlite as a kind of nonmetallic mineral material, be widely used in building, metallurgy, oil, chemical industry, light industry, The fields such as electric power, transport and agricultural.1.27 hundred million tons of District, Xinyang Area, Henan Province spinal cord perlite mineral reserve proved reserves, occupy " Asia first, generation Boundary the second ", accounts for more than the 70% of China's perlite commercial reserves.In building trade, by spherical the closing of Xinyang Normal College's research After hole perlite realizes industrialization, expanded perlite is just widely used in the light bone material of external wall insulation.But due to each Kind reason, the application of expanded perlite thermal-nsulation plate also suffer from some limitations.
The content of the invention
The technical problems to be solved by the invention are to provide modified expanded perlite insulation board and its production of a kind of hydrophobic Method, the modified expanded perlite insulation board have fire protecting performance is superior, light, intensity is high, thermal conductivity factor is low, water absorption rate is low, Pliability is good, the features such as having good workability.
To achieve these goals, the technical solution adopted in the present invention is to provide a kind of modified expanded perlite of hydrophobic Thermal insulation board, includes the component of following parts by weight meter:20-30 parts of cement, 5-8 parts of flyash, 2-5 parts of propyl trimethoxy silicane, 5-10 parts of polyacrylate dispersion, 50-70 parts of modified expanded perlite, 0.7-2.9 parts of neopelex, additive 5- 10 parts, 1-3 parts of quick lime, 0.1-0.5 parts of PP fibers, 0.5-2 parts of hydroxypropyl methyl cellulose, 5-10 parts of bentonite and water 10- 20 parts.
The model PO52.5 of the cement.
The fineness of the flyash is 12% (R45), loss on ignition 5%, sulfur trioxide content 3%.
The specific preparation method of the modified expanded perlite is:It is swollen that perlite is heated to 1000-1300 DEG C of progress Change is handled, and is made 7-10 times of perlite volumetric expansion, is obtained expanded perlite, then cool down, when temperature is down to 100-200 DEG C, The propyl trimethoxy silicane of expanded perlite gross weight 5-10% is sprayed to expanded perlite, continues to be cooled to room temperature, crosses 20- 30 mesh sieves, to obtain the final product.
The additive includes the component of following parts by weight meter:25-35 parts of calcium sulfate, 2-5 parts of aluminium oxide, triethanolamine 15-20 parts of 0.2-5 parts, 5-10 parts of trbasic zinc phosphate and iron oxide.
The length of the PP fibers is 12-16mm.
The technical solution adopted in the present invention also resides in the production for providing a kind of modified expanded perlite insulation board of hydrophobic Method, comprises the following steps:
(1) it is flyash, additive, polyacrylate dispersion, PP fibers, bentonite, quick lime and hydroxypropyl methyl is fine Dimension element is mixed and stirred for uniformly, adding cement and neopelex continuing to stir, obtain rubber powder material;
(2) modified expanded perlite and rubber powder material are mixed, add propyl trimethoxy silicane and water, stirring is equal Even, continuous mould pressing shaping, obtains half-dried modified expanded perlite insulation board;
(3) half-dried modified expanded perlite insulation board is subjected to heating curing;
(4) after heating curing, drying is started, drying to modified expanded perlite insulation board water content is less than 5%, i.e., Can kiln discharge.
Equipment used in continuous mould pressing shaping is hydraulic press in step (2), and the pressure of hydraulic press is 50t.
Heat-cured temperature is 20-70 DEG C in step (3), time 10-24h.
The heating curing of modified expanded perlite insulation board can use the conventional method of this area.The present invention is will be half-dried Modified expanded perlite insulation board is sent into tunnel oven, closure of a tunnel kiln wicket, opens biomass particle burning machine and air-heater Heating curing is carried out to half-dried modified expanded perlite insulation board.
Dry temperature is 90-120 DEG C in step (4).
Beneficial effect
1st, fire protecting performance is superior.Modified expanded perlite insulation board of the present invention mainly uses inorganic incombustible material, energy The fire protecting performance of thermal insulation board is enough effectively improved, the combustibility of modified expanded perlite insulation board of the present invention is up to A1 grades.
2nd, it is light, intensity is high, thermal conductivity factor is low.Modified expanded perlite insulation board material of the present invention is made using high-mark cement For major gelled material, while mix PP fibers, flyash, quick lime, neopelex, additive, hydroxypropyl first outside Base cellulose and bentonite improve the intensity of cementitious material, make thermal insulation material on the basis of resistance to compression, flexural strength is ensured significantly Dry density is reduced, makes plate that there is higher intensity and relatively low thermal conductivity factor, so as to ensure heat preservation plate material and system with good Good heat-insulating property.
3rd, it is good with the tack coat and cracking resistance protective layer compatibility of heat-insulation system.Since modified expanded perlite of the present invention is kept the temperature Plate as main cementitious material, not using sodium silicate and containing sodium silicate or contains chlorion cement using high-mark cement Additive, ensures that modified expanded perlite insulation board material and heat-insulation system are not in the problems such as accumulation of salt in the surface soil returns chlorine, together from root When the present invention thermal insulation board and bonding mortar that heat-insulation system uses, anticracking grout component it is substantially similar, ensure that System compatible Property it is good, will not occur hollowing cracking phenomena such as, can be with the building same service life.
4th, pliability is good, backfin ratio is reasonable, has good workability.Modified expanded perlite insulation board of the present invention uses half siccative Mould pressing technology and using the preferable polyacrylate dispersion of pliability as cementitious material additive, and thermal insulation board material is from modification Expanded perlite is fabricated into plate moulding shaping, and all using automated production, product pliability is good, backfin is than reasonable, quality Stablize, reduce work progress modified expanded perlite insulation board breakage rate.
5th, water absorption rate is low.The modified expanded perlite insulation board of the present invention adds propyl trimethoxy silicane as hydrophobic Agent, and by modified expanded perlite, optimize the proportionate relationship of each component, reduce the water absorption rate of thermal insulation board, prolong the service life.
6th, it is environmentally protective.Modified expanded perlite insulation board of the present invention with cement, flyash, bentonite, PP fibers and its Its organic and inorganic thing is effectively utilized industrial and mineral dead meal as raw material, and without addition poisonous and harmful substance, it is environmentally protective.
The 7th, although expanded perlite can reach the mesh of raising heat insulation effect by improving vitreous rate in process of production , but still with the presence of the perforate perlite close to 30%, in order to reduce the water absorption rate of this demi-inflation perlite, the present invention Spray propyl trimethoxy silicane in temperature-fall period after puffing furnace is puffing, modified expanded perlite is to achieve the purpose that hydrophobic.
8th, the heating curing temperature and time of the invention by controlling half-dried thermal insulation board, controls drying temperature, Neng Goujin One step improves the properties of thermal insulation board.
9th, test result indicates that, the dry density of modified expanded perlite insulation board of the present invention is less than 188kg/m3, pressure resistance Degree is more than 0.62MPa, and thermal conductivity factor is less than 0.051W/ (m.k), and flexural strength is more than 0.42MPa, and mass water content is less than 4.2%, it is more than 0.30MPa perpendicular to board direction tensile strength, volume water absorption rate is less than 7.7%, and coefficient of softing is more than 0.89, Mass loss rate is less than 3.3%, and compression strength loss rate is less than 22%, and hydrophobic rate is more than 99.2%.
10th, the raw material sources of modified expanded perlite insulation board of the present invention are extensive, cost is low, simple production process, are easy to Operation, disclosure satisfy that the demand of different construction materials, has good social and economic benefit.
Embodiment
The embodiment of the present invention is described in further detail with reference to embodiments.
The requirement of raw material used is in the present invention:
The model PO52.5 of cement.
The fineness of flyash is 12% (R45), loss on ignition 5%, sulfur trioxide content 3%.
The length of PP fibers is 16mm.
Polyacrylate dispersion is purchased from Taiyuan City Jinyuan District Jin Yuan Building Materials Factories.
Embodiment 1
The modified expanded perlite insulation board of the hydrophobic of the present embodiment, includes the component of following parts by weight meter:20 parts of cement, 5 parts of flyash, 5 parts of propyl trimethoxy silicane, 10 parts of polyacrylate dispersion, 50 parts of modified expanded perlite, dodecyl 2 parts of benzene sulfonic acid sodium salt, 8 parts of additive, 1 part of quick lime, 0.3 part of PP fibers, 0.5 part of hydroxypropyl methyl cellulose, 5 parts of bentonite and 10 parts of water.
The additive includes the component of following parts by weight meter:30 parts of calcium sulfate, 5 parts of aluminium oxide, 3 parts of triethanolamine, 15 parts of 10 parts of trbasic zinc phosphate and iron oxide.
The specific preparation method of the modified expanded perlite is:Perlite is heated to 1000 DEG C and carries out puffing place Reason, makes 7 times of perlite volumetric expansion, obtains expanded perlite, then cool down, when temperature is down to 150 DEG C, to expanded perlite Spray the propyl trimethoxy silicane of expanded perlite gross weight 5%, continue to be cooled to room temperature, cross 20 mesh sieves, to obtain the final product.
The production method of the modified expanded perlite insulation board of the hydrophobic of the present embodiment, comprises the following steps:
(1) it is flyash, additive, polyacrylate dispersion, PP fibers, bentonite, quick lime and hydroxypropyl methyl is fine Dimension element adds forced stirrer and is mixed and stirred for 15min, adds cement and neopelex continues to stir 20min, Obtain rubber powder material;
(2) modified expanded perlite and rubber powder material are mixed, add propyl trimethoxy silicane and water, stirring is equal It is even, send to hydraulic press continuous mould pressing and be molded, obtain half-dried modified expanded perlite insulation board;Hydraulic press pressure is 50t;
(3) half-dried modified expanded perlite insulation board is subjected to heating curing, heat-cured temperature is 20 DEG C, the time For 24h;
(4) after heating curing, drying is started, drying temperature is 90 DEG C, dry to modified expanded perlite insulation board Water content is less than 5%, you can kiln discharge.
Embodiment 2
The modified expanded perlite insulation board of the hydrophobic of the present embodiment, includes the component of following parts by weight meter:30 parts of cement, 8 parts of flyash, 2 parts of propyl trimethoxy silicane, 5 parts of polyacrylate dispersion, 60 parts of modified expanded perlite, detergent alkylate 0.7 part of sodium sulfonate, 5 parts of additive, 2 parts of quick lime, 0.1 part of PP fibers, 2 parts of hydroxypropyl methyl cellulose, 10 parts of bentonite and 15 parts of water.
The additive includes the component of following parts by weight meter:25 parts of calcium sulfate, 3 parts of aluminium oxide, triethanolamine 0.2 20 parts of part, 5 parts of trbasic zinc phosphate and iron oxide.
The specific preparation method of the modified expanded perlite is:Perlite is heated to 1300 DEG C and carries out puffing place Reason, makes 10 times of perlite volumetric expansion, obtains expanded perlite, then cool down, when temperature is down to 100 DEG C, to expanded pearlite Rock sprays the propyl trimethoxy silicane of expanded perlite gross weight 10%, continues to be cooled to room temperature, crosses 20 mesh sieves, to obtain the final product.
The production method of the modified expanded perlite insulation board of the hydrophobic of the present embodiment, comprises the following steps:
(1) it is flyash, additive, polyacrylate dispersion, PP fibers, bentonite, quick lime and hydroxypropyl methyl is fine Dimension element adds forced stirrer and is mixed and stirred for 10min, adds cement and neopelex continues to stir 40min, Obtain rubber powder material;
(2) modified expanded perlite and rubber powder material are mixed, add propyl trimethoxy silicane and water, stirring is equal It is even, send to hydraulic press continuous mould pressing and be molded, obtain half-dried modified expanded perlite insulation board;Hydraulic press pressure is 50t;
(3) half-dried modified expanded perlite insulation board is subjected to heating curing, heat-cured temperature is 50 DEG C, the time For 20h;
(4) after heating curing, drying is started, drying temperature is 100 DEG C, dry to modified expanded perlite insulation board Water content is less than 5%, you can kiln discharge.
Embodiment 3
The modified expanded perlite insulation board of the hydrophobic of the present embodiment, includes the component of following parts by weight meter:25 parts of cement, 6 parts of flyash, 4 parts of propyl trimethoxy silicane, 8 parts of polyacrylate dispersion, 70 parts of modified expanded perlite, detergent alkylate 2.9 parts of sodium sulfonate, 10 parts of additive, 3 parts of quick lime, 0.5 part of PP fibers, 1 part of hydroxypropyl methyl cellulose, 8 parts of bentonite and 20 parts of water.
The additive includes the component of following parts by weight meter:35 parts of calcium sulfate, 2 parts of aluminium oxide, 5 parts of triethanolamine, 16 parts of 8 parts of trbasic zinc phosphate and iron oxide.
The specific preparation method of the modified expanded perlite is:Perlite is heated to 1200 DEG C and carries out puffing place Reason, makes 7 times of perlite volumetric expansion, obtains expanded perlite, then cool down, when temperature is down to 200 DEG C, to expanded perlite Spray the propyl trimethoxy silicane of expanded perlite gross weight 8%, continue to be cooled to room temperature, cross 30 mesh sieves, to obtain the final product.
The production method of the modified expanded perlite insulation board of the hydrophobic of the present embodiment, comprises the following steps:
(1) it is flyash, additive, polyacrylate dispersion, PP fibers, bentonite, quick lime and hydroxypropyl methyl is fine Dimension element adds forced stirrer and is mixed and stirred for 20min, adds cement and neopelex continues to stir 20min, Obtain rubber powder material;
(2) modified expanded perlite and rubber powder material are mixed, add propyl trimethoxy silicane and water, stirring is equal It is even, send to hydraulic press continuous mould pressing and be molded, obtain half-dried modified expanded perlite insulation board;Hydraulic press pressure is 50t;
(3) half-dried modified expanded perlite insulation board is subjected to heating curing, heat-cured temperature is 70 DEG C, the time For 10h;
(4) after heating curing, drying is started, drying temperature is 120 DEG C, dry to modified expanded perlite insulation board Water content is less than 5%, you can kiln discharge.
Experimental example one
Using the modified expanded perlite insulation board of embodiment 1 as experiment material, verify the PP fibers of different length to modification The intensity effect of expanded perlite thermal-nsulation plate, the results are shown in Table 1.
Intensity effect of the PP fibers of 1 different length of table to modified expanded perlite insulation board
PP fibre lengths Compression strength Flexural strength Fiber batch mixing situation
6mm 0.38MPa 0.18MPa It is well dispersed
8mm 0.41MPa 0.22MPa It is well dispersed
10mm 0.44MPa 0.23MPa It is well dispersed
12mm 0.52MPa 0.38MPa It is well dispersed
14mm 0.59MPa 0.42MPa It is well dispersed
16mm 0.63MPa 0.45MPa It is well dispersed
18mm 0.64MPa 0.46MPa It is not easy to disperse
20mm 0.65MPa 0.49MPa It is not easy to disperse
Experimental example two
Using the expanded perlite of the present invention as experiment material, according to the preparation method of the modified expanded perlite of embodiment 1, Only changing the temperature that sprays of propyl trimethoxy silicane, verification difference, which sprays temperature, influences modified expanded perlite hydrophobicity, It the results are shown in Table 2.
2 difference of table, which sprays temperature, influences modified expanded perlite hydrophobicity
The perlite place of production Spray temperature Hydrophobic rate
Xinyang spinal cord 200℃ 98.8%
Xinyang spinal cord 150℃ 99.2%
Xinyang spinal cord 100℃ 99.0%
Experimental example three
Using the modified expanded perlite insulation board of the present invention as experimental group, and use commercially available expanded perlite thermal-nsulation plate As control, property indices are detected, the results are shown in Table 3.
The property indices of 3 modified expanded perlite insulation board of the present invention of table

Claims (7)

1. a kind of modified expanded perlite insulation board of hydrophobic, it is characterised in that include the component of following parts by weight meter:Cement 20-30 parts, 5-8 parts of flyash, 2-5 parts of propyl trimethoxy silicane, 5-10 parts of polyacrylate dispersion, modified expanded perlite 50-70 parts, 0.7-2.9 parts of neopelex, 5-10 parts of additive, 1-3 parts of quick lime, 0.1-0.5 parts of PP fibers, hydroxyl 10-20 parts of 0.5-2 parts of propyl methocel, 5-10 parts of bentonite and water;
The specific preparation method of the modified expanded perlite is:Perlite is heated to 1000-1300 DEG C and carries out puffing place Reason, makes 7-10 times of perlite volumetric expansion, obtains expanded perlite, then cool down, when temperature is down to 100-200 DEG C, to swollen Swollen perlite sprays the propyl trimethoxy silicane of expanded perlite gross weight 5-10%, continues to be cooled to room temperature, crosses 20-30 mesh Sieve, to obtain the final product;
The additive includes the component of following parts by weight meter:25-35 parts of calcium sulfate, 2-5 parts of aluminium oxide, triethanolamine 0.2- 15-20 parts of 5 parts, 5-10 parts of trbasic zinc phosphate and iron oxide;
The length of the PP fibers is 12-16mm.
2. the modified expanded perlite insulation board of hydrophobic according to claim 1, it is characterised in that the type of the cement Number it is PO52.5.
3. the modified expanded perlite insulation board of hydrophobic according to claim 1, it is characterised in that the flyash Fineness is 12%R45, loss on ignition 5%, sulfur trioxide content 3%.
A kind of 4. production method of the modified expanded perlite insulation board of hydrophobic as claimed in claim 1, it is characterised in that bag Include following steps:
(1)By flyash, additive, polyacrylate dispersion, PP fibers, bentonite, quick lime and hydroxypropyl methyl cellulose It is mixed and stirred for uniformly, adding cement and neopelex continuing to stir, obtain rubber powder material;
(2)Modified expanded perlite and rubber powder material are mixed, propyl trimethoxy silicane and water is added, stirs evenly, Continuous mould pressing is molded, and obtains half-dried modified expanded perlite insulation board;
(3)Half-dried modified expanded perlite insulation board is subjected to heating curing;
(4)After heating curing, start drying, drying to modified expanded perlite insulation board water content is less than 5%, you can goes out Kiln.
5. the production method of the modified expanded perlite insulation board of hydrophobic according to claim 4, it is characterised in that step (2)Equipment used in middle continuous mould pressing shaping is hydraulic press, and the pressure of hydraulic press is 50t.
6. the production method of the modified expanded perlite insulation board of hydrophobic according to claim 4, it is characterised in that step (3)In heat-cured temperature be 20-70 DEG C, time 10-24h.
7. the production method of the modified expanded perlite insulation board of hydrophobic according to claim 4, it is characterised in that step (4)The temperature of middle drying is 90-120 DEG C.
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CN108863273A (en) * 2018-08-16 2018-11-23 信阳成喜保温材料有限公司 A kind of waterproofness cement perlite heat-insulating shield and its production method

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