CN105948642A - Hydrophobic modified expanded perlite thermal insulation board and production method thereof - Google Patents

Hydrophobic modified expanded perlite thermal insulation board and production method thereof Download PDF

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CN105948642A
CN105948642A CN201610280632.7A CN201610280632A CN105948642A CN 105948642 A CN105948642 A CN 105948642A CN 201610280632 A CN201610280632 A CN 201610280632A CN 105948642 A CN105948642 A CN 105948642A
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expanded perlite
insulation board
modified expanded
parts
hydrophobic
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CN201610280632.7A
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Chinese (zh)
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CN105948642B (en
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安武
梅春河
张巍
魏燕
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中晶工程材料(信阳)有限公司
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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 a hydrophobic modified expanded perlite thermal insulation board and a production method thereof. The thermal insulation board comprises the following components, by weight: 20-30 parts of cement, 5-8 parts of fly ash, 2-5 parts of popyltrimethoxysilane, 5-10 parts of polyacrylate emulsion, 50-70 parts of modified expanded perlite, 0.7-2.9 parts of sodium dodecylbenzenesulfonate, 5-10 parts of additives, 1-3 parts of quicklime, 0.1-0.5 parts of PP fiber, 0.5-2 parts of hydroxypropyl methylcellulose, 5-10 parts of bentonite and 10-20 parts of water. According to the modified expanded perlite thermal insulation board, cement, fly ash, bentonite, PP fiber and other organics and inorganics are adopted as raw materials, such that industrial and mining waste materials are effectively utilized, and no toxic or harmful substance is added. Therefore, the modified expanded perlite thermal insulation board is green and environment-friendly. The modified expanded perlite thermal insulation board has the advantages of wide raw material source and low cost. The production process is simple and is easy to operate. With the thermal insulation board, requirements by different building materials can be satisfied, and good social and economic benefits are provided.

Description

The modified expanded perlite insulation board of a kind of hydrophobic and production method thereof
Technical field
The present invention relates to modified expanded perlite insulation board and the production method thereof of a kind of hydrophobic, belong to building material technical field.
Background technology
Building energy conservation is the industry that national industrial policies are given special assistance to.At present, energy-saving building materials is broadly divided into the light bone of inorganic heat preservation Material and the light bone material of organic heat-insulating, but due to materials chemistry character, whether inorganic system or organic system, all The requirement of properties of heat preservation and energy saving and security against fire cannot be taken into account: for heat-insulating property, organic material is better than inorganic material simultaneously; Considering from Performance-based fire, A level anti-flammability insulation material is again only selection.In recent years, inorganic heat insulation material expands Perlite the most progressively becomes the first-selection of inorganic external wall thermal-insulation material with its excellent fire retardancy energy, the advantage such as environmentally safe.
Expanded perlite, as a kind of nonmetallic mineral material, is widely used in building, metallurgy, oil, chemical industry, light industry, electricity The fields such as power, transport and agricultural.District, Xinyang Area, Henan Province Radix Cynanchi Paniculati perlite mineral reserve proved reserves 1.27 hundred million tons, occupy " Asia first, generation Boundary second ", account for more than the 70% of China's perlite commercial reserves.At building trade, Xinyang Normal College spherical hole closed studied After perlite realizes industrialization, expanded perlite is just widely used in the light bone material of external wall insulation.But due to various former Cause, the application of expanded perlite thermal-nsulation plate also suffers from some and limits.
Summary of the invention
The technical problem to be solved is to provide modified expanded perlite insulation board and the production method thereof of a kind of hydrophobic, should Modified expanded perlite insulation board has that fire protecting performance is superior, light weight, intensity high, heat conductivity is low, water absorption rate is low, pliability Get well, the feature such as have good workability.
To achieve these goals, the technical solution adopted in the present invention is to provide the modified expanded perlite insulation board of a kind of hydrophobic, Component including following weight portion meter: cement 20-30 part, flyash 5-8 part, propyl trimethoxy silicane 2-5 part, polypropylene Acid esters emulsion 5-10 part, modified expanded perlite 50-70 part, dodecylbenzene sodium sulfonate 0.7-2.9 part, additive 5-10 part, Quick lime 1-3 part, PP fiber 0.1-0.5 part, hydroxypropyl methyl cellulose 0.5-2 part, bentonite 5-10 part and water 10-20 part.
The model of described cement is PO52.5.
The fineness of described flyash is 12% (R45), and loss on ignition is 5%, and sulfur trioxide content is 3%.
The concrete preparation method of described modified expanded perlite is: perlite is heated to 1000-1300 DEG C and carries out expanding treatment, Make perlite volumetric expansion 7-10 times, obtain expanded perlite, then lower the temperature, when temperature is down to 100-200 DEG C, to expansion 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, Obtain.
Described additive includes the component of following weight portion meter: calcium sulfate 25-35 part, aluminium oxide 2-5 part, triethanolamine 0.2-5 Part, zinc phosphate 5-10 part and ferrum oxide 15-20 part.
The a length of 12-16mm of described PP fiber.
The technical solution adopted in the present invention also resides in the production method of the modified expanded perlite insulation board providing a kind of hydrophobic, bag Include following steps:
(1) flyash, additive, polyacrylate dispersion, PP fiber, bentonite, quick lime and hydroxypropyl methyl is fine Dimension element is mixed and stirred for uniformly, adds cement and dodecylbenzene sodium sulfonate continues stirring, obtain rubber powder material;
(2) by modified expanded perlite and rubber powder material mix and blend, add propyl trimethoxy silicane and water, stir, Continuous mould pressing molding, obtains half-dried modified expanded perlite insulation board;
(3) half-dried modified expanded perlite insulation board is carried out heating curing;
(4) after heating curing terminates, start to be dried, be dried to modified expanded perlite insulation board water content less than 5%, Kiln discharge.
The equipment that in step (2), continuous mould pressing molding is used is hydraulic press, and the pressure of hydraulic press is 50t.
In step (3), heat-cured temperature is 20-70 DEG C, and the time is 10-24h.
The heating curing of modified expanded perlite insulation board can use the conventional method of this area.The present invention is by swollen for half-dried modification Swollen pearlite heat-insulation plate is sent in tunnel cave, closure of a tunnel kiln wicket, opens biomass particle burning machine and hot-air blower to half-dried Modified expanded perlite insulation board carries out heating curing.
The temperature being dried in step (4) is 90-120 DEG C.
Beneficial effect
1, fire protecting performance is superior.Modified expanded perlite insulation board of the present invention mainly uses inorganic incombustible material, it is possible to effectively Improving the fire protecting performance of warming plate, the combustibility of modified expanded perlite insulation board of the present invention is up to A1 level.
2, light weight, intensity is high, heat conductivity is low.Modified expanded perlite insulation board material of the present invention uses high-mark cement as master Want Binder Materials, mix PP fiber, flyash, quick lime, dodecylbenzene sodium sulfonate, additive, hydroxypropyl methyl the most outward Cellulose and bentonite improve the intensity of Binder Materials, make insulation material be substantially reduced on the basis of ensureing resistance to compression, rupture strength Dry density, makes sheet material have higher intensity and relatively low heat conductivity, thus ensures that heat preservation plate material and system have good guarantor Warm nature energy.
3 is good with the tack coat of heat-insulation system and the cracking resistance protective layer compatibility.Owing to modified expanded perlite insulation board of the present invention uses High-mark cement, as main Binder Materials, does not use sodium silicate and containing sodium silicate or containing chloride ion cement additire, From root, ensure that modified expanded perlite insulation board material and heat-insulation system do not have the accumulation of salt in the surface soil and return the problems such as chlorine, simultaneously the present invention Warming plate and the bonding mortar of heat-insulation system use, anticracking grout composition basic simlarity, it is ensured that system compatibility is good, Bu Huifa The phenomenons such as raw hollowing cracking, it is possible to life-span same with building.
4, pliability is good, backfin than rationally, have good workability.Modified expanded perlite insulation board of the present invention uses half siccative to mold Technology and the employing preferable polyacrylate dispersion of pliability are as Binder Materials additive, and warming plate material is from modified expanded treasure Zhu Yan is fabricated into plate moulding molding, all uses automated production, and product pliability is good, backfin ratio is reasonable, steady quality, Reduce work progress modified expanded perlite insulation board breakage rate.
5, water absorption rate is low.The modified expanded perlite insulation board addition propyl trimethoxy silicane of the present invention is as hydrophober, and leads to Cross modified expanded perlite, optimize the proportionate relationship of each component, reduce the water absorption rate of warming plate, increase the service life.
6, environmental protection.Modified expanded perlite insulation board of the present invention with cement, flyash, bentonite, PP fiber and other Organic and inorganic thing, as raw material, is effectively utilized industrial and mineral dead meal, and does not add poisonous and harmful substance, environmental protection.
Although 7, expanded perlite can reach to improve by improving vitreous rate the purpose of heat insulation effect in process of production, but Still with the presence of close to 30% perforate perlite, in order to reduce the perlitic water absorption rate of this demi-inflation, the present invention is at puffing furnace Spraying propyl trimethoxy silicane in expanded rear temperature-fall period, modified expanded perlite is to reach the purpose of hydrophobic.
8, the present invention is by controlling the heating curing temperature and time of half-dried warming plate, controls baking temperature, it is possible to carry further The properties of high warming plate.
9, test result indicate that, the dry density of modified expanded perlite insulation board of the present invention is less than 188kg/m3, comprcssive strength is more than 0.62MPa, heat conductivity is less than 0.051W/ (m.k), and rupture strength is more than 0.42MPa, and mass water content is less than 4.2%, hangs down Directly being less than 7.7% in direction, plate face tensile strength more than 0.30MPa, volume water absorption rate, coefficient of softing is more than 0.89, mass loss Rate is less than 3.3%, and comprcssive strength loss rate is less than 22%, and hydrophobic rate is more than 99.2%.
10, the raw material sources of modified expanded perlite insulation board of the present invention are extensive, low cost, production technology are simple, easily operated, Disclosure satisfy that the demand of different construction material, there is good Social and economic benef@.
Detailed description of the invention
Below in conjunction with embodiment, the detailed description of the invention of the present invention is described in further detail.
The requirement of raw material used in the present invention is:
The model of cement is PO52.5.
The fineness of flyash is 12% (R45), and loss on ignition is 5%, and sulfur trioxide content is 3%.
The a length of 16mm of PP fiber.
Polyacrylate dispersion is purchased from Jinyuan District, Taiyuan City Jin Yuan Building Materials Factory.
Embodiment 1
The modified expanded perlite insulation board of the hydrophobic of the present embodiment, including the component of following weight portion meter: cement 20 parts, fine coal Ash 5 parts, propyl trimethoxy silicane 5 parts, polyacrylate dispersion 10 parts, modified expanded perlite 50 parts, dodecyl Benzene sulfonic acid sodium salt 2 parts, additive 8 parts, quick lime 1 part, PP fiber 0.3 part, hydroxypropyl methyl cellulose 0.5 part, swelling 5 parts of soil and 10 parts of water.
Described additive includes the component of following weight portion meter: 30 parts of calcium sulfate, aluminium oxide 5 parts, triethanolamine 3 parts, phosphorus 10 parts of zinc of acid and ferrum oxide 15 parts.
The concrete preparation method of described modified expanded perlite is: perlite is heated to 1000 DEG C and carries out expanding treatment, make treasure Pearl rock volumetric expansion 7 times, obtains expanded perlite, then lowers the temperature, and when temperature is down to 150 DEG C, sprays expanded perlite The propyl trimethoxy silicane of expanded perlite gross weight 5%, continues to be cooled to room temperature, crosses 20 mesh sieves, to obtain final product.
The production method of the modified expanded perlite insulation board of the hydrophobic of the present embodiment, comprises the following steps:
(1) flyash, additive, polyacrylate dispersion, PP fiber, bentonite, quick lime and hydroxypropyl methyl is fine Dimension element adds forced stirrer and is mixed and stirred for 15min, adds cement and dodecylbenzene sodium sulfonate continues stirring 20min, To rubber powder material;
(2) by modified expanded perlite and rubber powder material mix and blend, add propyl trimethoxy silicane and water, stir, Deliver to hydraulic press continuous mould pressing molding, obtain half-dried modified expanded perlite insulation board;Hydraulic press pressure is 50t;
(3) half-dried modified expanded perlite insulation board carrying out heating curing, heat-cured temperature is 20 DEG C, and the time is 24h;
(4) after heating curing terminates, starting to be dried, baking temperature is 90 DEG C, is dried to modified expanded perlite insulation board and contains The water yield is less than 5%, gets final product kiln discharge.
Embodiment 2
The modified expanded perlite insulation board of the hydrophobic of the present embodiment, including the component of following weight portion meter: cement 30 parts, fine coal Ash 8 parts, propyl trimethoxy silicane 2 parts, polyacrylate dispersion 5 parts, modified expanded perlite 60 parts, detergent alkylate Sodium sulfonate 0.7 part, additive 5 parts, quick lime 2 parts, PP fiber 0.1 part, hydroxypropyl methyl cellulose 2 parts, bentonite 10 parts and 15 parts of water.
Described additive includes the component of following weight portion meter: 25 parts of calcium sulfate, aluminium oxide 3 parts, triethanolamine 0.2 part, Zinc phosphate 5 parts and ferrum oxide 20 parts.
The concrete preparation method of described modified expanded perlite is: perlite is heated to 1300 DEG C and carries out expanding treatment, make treasure Pearl rock volumetric expansion 10 times, obtains expanded perlite, then lowers the temperature, and when temperature is down to 100 DEG C, sprays expanded perlite The propyl trimethoxy silicane of expanded perlite gross weight 10%, continues to be cooled to room temperature, crosses 20 mesh sieves, to obtain final product.
The production method of the modified expanded perlite insulation board of the hydrophobic of the present embodiment, comprises the following steps:
(1) flyash, additive, polyacrylate dispersion, PP fiber, bentonite, quick lime and hydroxypropyl methyl is fine Dimension element adds forced stirrer and is mixed and stirred for 10min, adds cement and dodecylbenzene sodium sulfonate continues stirring 40min, To rubber powder material;
(2) by modified expanded perlite and rubber powder material mix and blend, add propyl trimethoxy silicane and water, stir, Deliver to hydraulic press continuous mould pressing molding, obtain half-dried modified expanded perlite insulation board;Hydraulic press pressure is 50t;
(3) half-dried modified expanded perlite insulation board carrying out heating curing, heat-cured temperature is 50 DEG C, and the time is 20h;
(4) after heating curing terminates, starting to be dried, baking temperature is 100 DEG C, is dried to modified expanded perlite insulation board and contains The water yield is less than 5%, gets final product kiln discharge.
Embodiment 3
The modified expanded perlite insulation board of the hydrophobic of the present embodiment, including the component of following weight portion meter: cement 25 parts, fine coal Ash 6 parts, propyl trimethoxy silicane 4 parts, polyacrylate dispersion 8 parts, modified expanded perlite 70 parts, detergent alkylate Sodium sulfonate 2.9 parts, additive 10 parts, quick lime 3 parts, PP fiber 0.5 part, hydroxypropyl methyl cellulose 1 part, bentonite 8 parts and 20 parts of water.
Described additive includes the component of following weight portion meter: 35 parts of calcium sulfate, aluminium oxide 2 parts, triethanolamine 5 parts, phosphorus 8 parts of zinc of acid and ferrum oxide 16 parts.
The concrete preparation method of described modified expanded perlite is: perlite is heated to 1200 DEG C and carries out expanding treatment, make treasure Pearl rock volumetric expansion 7 times, obtains expanded perlite, then lowers the temperature, and when temperature is down to 200 DEG C, sprays expanded perlite The propyl trimethoxy silicane of expanded perlite gross weight 8%, continues to be cooled to room temperature, crosses 30 mesh sieves, to obtain final product.
The production method of the modified expanded perlite insulation board of the hydrophobic of the present embodiment, comprises the following steps:
(1) flyash, additive, polyacrylate dispersion, PP fiber, bentonite, quick lime and hydroxypropyl methyl is fine Dimension element adds forced stirrer and is mixed and stirred for 20min, adds cement and dodecylbenzene sodium sulfonate continues stirring 20min, To rubber powder material;
(2) by modified expanded perlite and rubber powder material mix and blend, add propyl trimethoxy silicane and water, stir, Deliver to hydraulic press continuous mould pressing molding, obtain half-dried modified expanded perlite insulation board;Hydraulic press pressure is 50t;
(3) half-dried modified expanded perlite insulation board carrying out heating curing, heat-cured temperature is 70 DEG C, and the time is 10h;
(4) after heating curing terminates, starting to be dried, baking temperature is 120 DEG C, is dried to modified expanded perlite insulation board and contains The water yield is less than 5%, gets final product kiln discharge.
Experimental example one
With the modified expanded perlite insulation board of embodiment 1 as experiment material, the PP fiber of checking different length is to modified expanded treasure The intensity effect of pearl rock warming plate, the results are shown in Table 1.
The PP fiber of the table 1 different length intensity effect to modified expanded perlite insulation board
PP fibre length Comprcssive strength Rupture strength Fiber batch mixing situation
6mm 0.38MPa 0.18MPa Good dispersion
8mm 0.41MPa 0.22MPa Good dispersion
10mm 0.44MPa 0.23MPa Good dispersion
12mm 0.52MPa 0.38MPa Good dispersion
14mm 0.59MPa 0.42MPa Good dispersion
16mm 0.63MPa 0.45MPa Good dispersion
18mm 0.64MPa 0.46MPa It is difficult to dispersion
20mm 0.65MPa 0.49MPa It is difficult to dispersion
Experimental example two
With the expanded perlite of the present invention as experiment material, according to the preparation method of the modified expanded perlite of embodiment 1, only change Becoming the temperature that sprays of propyl trimethoxy silicane, checking difference sprays temperature to be affected modified expanded perlite hydrophobicity, and result is shown in Table 2.
Table 2 difference sprays temperature to be affected modified expanded perlite hydrophobicity
The perlite place of production Spray temperature Hydrophobic rate
Xinyang Radix Cynanchi Paniculati 200℃ 98.8%
Xinyang Radix Cynanchi Paniculati 150℃ 99.2%
Xinyang Radix Cynanchi Paniculati 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 right According to, detect property indices, the results are shown in Table 3.
The property indices of table 3 modified expanded perlite insulation board of the present invention

Claims (10)

1. the modified expanded perlite insulation board of a hydrophobic, it is characterised in that include the component of following weight portion meter: cement 20-30 part, flyash 5-8 part, propyl trimethoxy silicane 2-5 part, polyacrylate dispersion 5-10 part, modified expanded Margarita Rock 50-70 part, dodecylbenzene sodium sulfonate 0.7-2.9 part, additive 5-10 part, quick lime 1-3 part, PP fiber 0.1-0.5 Part, hydroxypropyl methyl cellulose 0.5-2 part, bentonite 5-10 part and water 10-20 part.
The modified expanded perlite insulation board of hydrophobic the most according to claim 1, it is characterised in that the type of described cement Number it is PO52.5.
The modified expanded perlite insulation board of hydrophobic the most according to claim 1, it is characterised in that described flyash Fineness is 12% (R45), and loss on ignition is 5%, and sulfur trioxide content is 3%.
The modified expanded perlite insulation board of hydrophobic the most according to claim 1, it is characterised in that described is modified expanded Perlitic concrete preparation method is: perlite is heated to 1000-1300 DEG C and carries out expanding treatment, make perlite volumetric expansion 7-10 times, obtain expanded perlite, then lower the temperature, when temperature is down to 100-200 DEG C, expanded perlite is sprayed expansion treasure The propyl trimethoxy silicane of pearl rock gross weight 5-10%, continues to be cooled to room temperature, crosses 20-30 mesh sieve, to obtain final product.
The modified expanded perlite insulation board of hydrophobic the most according to claim 1, it is characterised in that described additive bag Include the component of following weight portion meter: calcium sulfate 25-35 part, aluminium oxide 2-5 part, triethanolamine 0.2-5 part, zinc phosphate 5-10 Part and ferrum oxide 15-20 part.
The modified expanded perlite insulation board of hydrophobic the most according to claim 1, it is characterised in that described PP fiber A length of 12-16mm.
7. the production method of the modified expanded perlite insulation board of a hydrophobic as claimed in claim 1, it is characterised in that bag Include following steps:
(1) flyash, additive, polyacrylate dispersion, PP fiber, bentonite, quick lime and hydroxypropyl methyl is fine Dimension element is mixed and stirred for uniformly, adds cement and dodecylbenzene sodium sulfonate continues stirring, obtain rubber powder material;
(2) by modified expanded perlite and rubber powder material mix and blend, add propyl trimethoxy silicane and water, stir, Continuous mould pressing molding, obtains half-dried modified expanded perlite insulation board;
(3) half-dried modified expanded perlite insulation board is carried out heating curing;
(4) after heating curing terminates, start to be dried, be dried to modified expanded perlite insulation board water content less than 5%, Kiln discharge.
The production method of the modified expanded perlite insulation board of hydrophobic the most according to claim 7, it is characterised in that step (2) equipment that in, continuous mould pressing molding is used is hydraulic press, and the pressure of hydraulic press is 50t.
The production method of the modified expanded perlite insulation board of hydrophobic the most according to claim 7, it is characterised in that step (3) in, heat-cured temperature is 20-70 DEG C, and the time is 10-24h.
The production method of the modified expanded perlite insulation board of hydrophobic the most according to claim 7, it is characterised in that step Suddenly the temperature being dried in (4) is 90-120 DEG C.
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