CN106316335A - Silicate microporous insulation plate and preparation method thereof - Google Patents

Silicate microporous insulation plate and preparation method thereof Download PDF

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Publication number
CN106316335A
CN106316335A CN201610696299.8A CN201610696299A CN106316335A CN 106316335 A CN106316335 A CN 106316335A CN 201610696299 A CN201610696299 A CN 201610696299A CN 106316335 A CN106316335 A CN 106316335A
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Prior art keywords
silicate
slurry
preparation
density
insulation
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CN201610696299.8A
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CN106316335B (en
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吴中和
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Zhuhai Zhongxin Heat Insulating Material Factory Co Ltd
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Zhuhai Zhongxin Heat Insulating Material Factory Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/24—Compositions 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
    • C04B28/26—Silicates of the alkali metals
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/02—Selection of the hardening environment
    • C04B40/0263—Hardening promoted by a rise in temperature
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20—Resistance against chemical, physical or biological attack
    • C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
    • C04B2201/32—Mortars, 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
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Thermal Insulation (AREA)
  • Building Environments (AREA)

Abstract

The invention provides a silicate microporous insulation plate and a preparation method thereof. The preparation method includes steps of S1, preparing silicate insulation slurry so that the density of the defoamed slurry is controlled to 680-720 kg/m<3>; S2, adding suitable inorganic light mineral filler to the slurry, and mixing well; S3, injecting the mixture of step S2 into a mold, placing in a kiln along with the mold, and drying according to a certain temperature curve to obtain the finished plate. The silicate microporous insulation plate has the advantages that the silicate microporous insulation plate has certain strength and suitable toughness, nearly all advantages of microporous calcium silicate insulation material are retained, the defect that the microporous calcium silicate insulation material is hard, crispy and prone to crushing and difficult to construct is overcome, and the silicate microporous insulation plate is high in strength, treading resistant and tolerant to high temperatures as compared with foamed asbestos and composite silicate foam plates; the silicate microporous insulation plate is an insulation material with ideal comprehensive properties.

Description

Heat insulating porous plate of silicate and preparation method thereof
Technical field
The present invention relates to technical field of composite materials, be specifically related to field of heat insulating materials, particularly relate to a kind of silicate micro- Hole warming plate, it is possible to be referred to as the heat insulating porous plate of silicate semi-rigid or the heat insulating porous plate of semi-rigid.
Background technology
Microporous calcium silicate is a kind of hard insulating material conventional on market, and shape of product is hard tile fragment or tabular.Its Major advantage is that intensity is high, and heatproof is high, and heat insulating effect is relatively good, compares with the fiber-like insulation material such as rock wool, glass cotton Relatively, without scratchy fibre dust, the feature of environmental protection is better than fiber-like material, and service life is long.
The major defect of microporous calcium silicate is:
1. product is immalleable, hard and crisp, is easily broken.There are two kinds of situations: one is to break under cold cycling gas shock Broken.Such as, carry out equipment or the pipeline of microporous calcium silicate insulation, under higher operating temperature (350-600 DEG C), if frequency Numerous shutdown, start, if do not controlled temperature rise, temperature drop speed, microporous calcium silicate is replaced impact variation by hot and cold air, can produce Broken.The second situation is that maintainer is trampled microporous calcium silicate products and is easily broken.After goods are broken, heat-insulating property declines.
2. although microporous calcium silicate does not has scratchy fibre dust, but there are earth dust, and easily dry linting in its surface.This A little dust are as one layer of interleaving agent, and when insulation is installed, microporous calcium silicate tile fragment is bondd by very difficult binding material with tile fragment, tile fragment Bond with equipment.Between insulation tile fragment, the existence in gap, forms a large amount of heat bridge, and scatter and disappear a large amount of heat energy, makes heat-insulation layer integral heat insulation Hydraulic performance decline.
For above-mentioned reasons, the conventional construction method of microporous calcium silicate is, needs in advance on equipment (reactor, storage tank etc.) Welding bracing ring or hook nail, the method tied up with iron wire fixes insulation tile fragment, after insulation tile fragment is tentatively fixing, outside heat-insulation layer again Fix with wire gauze, afterwards, wipe one's face with asbestos cement.Float coat has positive effect to the globality of insulation construction, but to elimination Heat bridge effect is little.Because the gap between tile fragment still exists, asbestos cement float coat heat insulation effect is limited, asbestos cement Float coat spreads upon on wire gauze, without being applied in heat insulation tile block gap.So, microporous calcium silicate construction complexity, Operation is many, and integral heat insulation effect is the most undesirable.
Litaflex plate, composition silicate foam heat-insulating board or felt, density 30-70kg/m is also had on market3, belong to density Less blanket type insulation, its material structure is obvious foaming structure, and foam diameter is grade, and intensity is the lowest, heatproof The lowest, it is impossible to trample, it is impossible to replace microporous calcium silicate.
Summary of the invention
Because described in background technology, it is necessary to a kind of heat insulating porous plate of silicate and preparation method thereof is provided, the most permissible Keep the advantage of microporous calcium silicate material, improve again its shortcoming.Design requirement is, density 160-200kg/m3, there is some strength, Also there are certain toughness, cold-hot gas shock, trampling of maintainer can be born；Warming plate Dustless-surface, it is simple to paste Construction, it is simple to smear seam and process of wiping one's face；High insulating effect, thermal conductivity ratio microporous calcium silicate is low.
It is an object of the invention to be achieved through the following technical solutions:
A kind of heat insulating porous plate of silicate, it is 60-by the silicate heat preservation slurry of 100 parts and the density of 13.5-15 part 80kg/m3, the expanded perlite of granularity 30-50 mesh does filler, and drying of heating after mix homogeneously obtains, the silicate after drying Heat insulating porous plate, its material structure is microcellular structure, and micro-pore diameter is micron to nano grade, and density is 160-200kg/m3, by force Degree is about 180-220Kpa.
A kind of preparation method of the heat insulating porous plate of silicate, it comprises the following steps:
S1, making silicate heat preservation slurry, the density domination of described slurry is at 680-720kg/m3；
S2, take described slurry, add a certain amount of inorganic light weight mineral filler, described slurry and described filler are mixed all Even；
In S3, the compound injection mould that will obtain in described S2, put into baking kiln drying together with mould: the most slightly heat up To 55-65 DEG C, keeping this temperature 5-7 hour, preferably 6 hours, this was the first heated zones,；Then heat to 80-90 DEG C, protect Holding this temperature 6-8 hour, preferably 7 hours, this was the second heated zones；Finally it is warming up to 115-120 DEG C, keeps this temperature 5-7 Hour, preferably 6 hours, this was the 3rd heated zones, was finished product after drying.
The heat insulating porous plate of silicate dried, material structure is the microcellular structure being invisible to the naked eye, and micro-pore diameter is micron To nanoscale, density is 160-200kg/m3, intensity reaches about 200Kpa.
Thickness according to the heat insulating porous plate of silicate is different, and the time of the 3rd heated zones need to adjust according to actual needs.
In described S2, the addition content of inorganic light weight mineral filler is different, and intensity, the toughness of final products is had different shadow Ring: addition content is little, and intensity is little, and pliability is good；Addition content is big, and intensity is big, and toughness reduces.Consider wanting of product of the present invention Asking, and consider the factors such as the source of filler, price, effect of heat insulation, choosing density is 60-80kg/m3, granularity 30-50 purpose Expanded perlite does filler, and the mass percent of described slurry and described filler is: 100:13.5-15.
In described S1, the preparation method of described slurry is as follows:
The material of offer following components:
Being stirred 75-80 minute in blender by the material of above-mentioned each component, material stirring is uniform, and foaming fully, then adds Enter organic silicon defoamer 0.25-0.35kg froth breaking.The standard of froth breaking is: the slurry after froth breaking be not allow for obvious grade with Upper bubble, but can not undue froth breaking, need to keep slurry is a kind of tiny/fine and closely woven micropore structural state, the slurry after froth breaking Density domination is at 680-720kg/m3It is advisable.
If not having froth breaking when making silicate heat preservation slurry, or froth breaking being not reaching to requirement, slurry density ratio is relatively low, raw The warming plate tissue of output presents foaming structure, and foam aperture is bigger, hence it is evident that visible；After drying, warming plate density is little, intensity Low, do not meet the design requirement of the present invention；If undue froth breaking, warming plate microporosity reduces, and density increases, and dry density can reach 280kg/m3Above, heat insulation effect is the most bad.So, in production process, it is necessary to control each technological parameter.
In the preparation method of the present invention, in the starting stage of baking, the i.e. first heated zones, it it is the micropore knot of insulation material The structure sizing stage, low-temperature bake, slowly heats up, contributes to micropore sizing；Too fast if heated up, stream molecule can break through material Original structure, produce transpiration, form big bubble.Described second heated zones, is the stable sizing stage, is also progressively to add The fast water evaporation stage.Described 3rd heated zones, after insulation material structure has finalized the design almost, for consolidating the sizing stage, Accelerate water evaporation；Thickness according to insulation material is different, can extend or shorten the heat time heating time of the 3rd heated zones accordingly.
Compared with prior art, the invention have the advantages that
Patent of the present invention provides the benefit that, maintains the almost all advantage of Thermal Insulation Material of Porous Calcium Silicate, improves The deficiency of Thermal Insulation Material of Porous Calcium Silicate.Although silicate heat insulating porous plate intensity decreases, but the intensity of 200Kpa, permissible Bear production, the trampling of maintainer.The feature of environmental protection improves, and toughness improves, warming plate surface not dry linting, easily realizes smearing seam, smearing Face processes, and the good integrity of heat-insulation layer, heat insulation effect is greatly improved.Specifically, at the oil storage tank top, oil recovery factory in oil field, Reactor top, chemical plant, it will usually arrange charge door or manhole, produces or maintainer needs often to arrive tank deck work, at tank Top insulation material selects, and the material such as soft rock wool, glass cotton, composite silicate heat insulation plate/felt is unable to bear trampling of people And deformation failure, microporous calcium silicate is the most easily tramped, and under similar operating mode, the heat insulating porous plate of silicate is that one is difficult to generation The ideal chose replaced.
Following table is the heat insulating porous plate of silicate of the present invention and the main performance comparison of microporous calcium silicate:
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with specific embodiment, to this Invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, not For limiting the present invention.
The present embodiment provides a kind of heat insulating porous plate of silicate, and it is by the silicate heat preservation slurry of 100 parts and 13.5-15 part The density of (preferably 13.5 parts) is 60-80kg/m3(preferably 60kg/m3), granularity be 30 50 expanded perlite do filler, mixed Drying of heating after closing uniformly obtains, the heat insulating porous plate of silicate after drying, and material structure is the microcellular structure being invisible to the naked eye, Micro-pore diameter is micron to nano grade, and density is 160-200kg/m3, intensity reaches about 200Kpa.
The preparation method of the heat insulating porous plate of silicate of the present embodiment comprises the following steps:
S1, making silicate heat preservation slurry: the material of offer following components:
Being stirred in blender by the material of above-mentioned each component 75-80 minute (preferably 75 minutes), material stirring is uniform, sends out Bubble fully, adds organic silicon defoamer 0.25-0.35 part froth breaking.The standard of froth breaking is: the slurry after froth breaking is not allow for bright The aobvious above bubble of grade, but can not undue froth breaking, need to keep slurry is a kind of tiny/fine and closely woven micropore structural state, Slurry density after froth breaking controls at 680-720kg/m3It is advisable, with 680kg/m3Effect preferably；
S2, take 100 parts of described slurry, add a certain amount of inorganic light weight mineral filler, by described slurry and described filler Mix homogeneously: the addition content of inorganic light weight mineral filler is different, intensity, the toughness of final products is had Different Effects: addition content Little, intensity is little, and pliability is good；Addition content is big, and intensity is big, and toughness reduces；Consider the requirement of product of the present invention, and consider to fill out The factors such as the source of material, price, effect of heat insulation, choosing density is 60-80kg/m3, preferably 60kg/m3, granularity 30-50 purpose Expanded perlite does filler, and admixture quantity controls 13.5-15 part, preferably 13.5 parts；
In S3, the compound injection mould that will obtain in described S2, put into baking kiln drying together with mould: the most slightly heat up To 55-65 DEG C, preferably 55 DEG C, the i.e. first heated zones, keep this temperature about 6 hours；Then heat to 80-90, preferably 85 DEG C, the i.e. second heated zones, keep this temperature about 7 hours；Finally it is warming up to 115-120 DEG C, preferably 120 DEG C, is the 3rd Heated zones, keeps this temperature about 6 hours, is finished product.Thickness according to the heat insulating porous plate of silicate is different, the 3rd heating The time of section need to adjust according to actual needs；In the starting stage of baking, the i.e. first heated zones does not allows to heat up too fast, no Then, the microcellular structure of insulation material can be destroyed.

Claims (4)

1. the heat insulating porous plate of silicate, it is characterised in that: it is by the silicate insulation that mass percent is 100:13.5-15 Drying of heating after slurry and expanded perlite mix homogeneously obtains, and described expanded perlite is as filler, and its density is 60- 80kg/m3, granularity 30-50 mesh；The material structure of the heat insulating porous plate of described silicate is microcellular structure, and micro-pore diameter is micron To nanoscale, density is 160-200kg/m3, intensity is 180-220Kpa.
2. the preparation method of the heat insulating porous plate of silicate, it is characterised in that: it comprises the following steps:
S1, making silicate heat preservation slurry, the density domination of described slurry is at 680-720kg/m3；
S2, take described slurry, add a certain amount of inorganic light weight mineral filler, by described slurry and described filler mix homogeneously；
In S3, the compound injection mould that will obtain in described S2, put into baking kiln drying together with mould: be first slightly warming up to 55-65 DEG C, then keep this temperature 5-7 hour；Then heat to 80-90 DEG C, keep this temperature 6-8 hour；Finally it is warming up to 115-120 DEG C, keep this temperature 5-7 hour, after drying, be finished product.
Preparation method the most according to claim 2, it is characterised in that:
In described S2, density chosen by described inorganic light weight mineral filler is 60-80kg/m3, the expanded pearlite of granularity 30-50 mesh Rock, the mass percent of described slurry and described filler is: 100:13.5-15.
Preparation method the most according to claim 2, it is characterised in that:
In described S1, the preparation method of described slurry is as follows:
The material of offer following components:
Being stirred 75-80 minute in blender by the material of above-mentioned each component, material stirring is uniform, and foaming fully, has added Machine silicon defoaming agent 0.25-0.35 part froth breaking；The standard that froth breaking is to be reached is: the slurry after froth breaking is not allow for obvious grade Above bubble, but can not undue froth breaking, need to keep slurry is a kind of tiny/fine and closely woven micropore structural state, the slurry after froth breaking Material density domination is at 680-720kg/m3。
CN201610696299.8A 2016-08-19 2016-08-19 Heat insulating porous plate of silicate and preparation method thereof Active CN106316335B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2285773Y (en) * 1997-05-19 1998-07-08 周响 Thermal insulation compound silicate board for wall
CN1312336A (en) * 2000-03-08 2001-09-12 吴中和 Formed high-strength composit heat-insulating silicate material for valve
CN101028968A (en) * 2006-08-22 2007-09-05 吴中和 Production of unshaped thermal-insulating material
CN101391872A (en) * 2007-09-17 2009-03-25 刘伟华 Novel thermal insulation composite material composition and method of making the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2285773Y (en) * 1997-05-19 1998-07-08 周响 Thermal insulation compound silicate board for wall
CN1312336A (en) * 2000-03-08 2001-09-12 吴中和 Formed high-strength composit heat-insulating silicate material for valve
CN101028968A (en) * 2006-08-22 2007-09-05 吴中和 Production of unshaped thermal-insulating material
CN101391872A (en) * 2007-09-17 2009-03-25 刘伟华 Novel thermal insulation composite material composition and method of making the same

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