CN107129261A - Powder, its formed body and cladding - Google Patents
Powder, its formed body and cladding Download PDFInfo
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- CN107129261A CN107129261A CN201610113725.0A CN201610113725A CN107129261A CN 107129261 A CN107129261 A CN 107129261A CN 201610113725 A CN201610113725 A CN 201610113725A CN 107129261 A CN107129261 A CN 107129261A
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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
- C04B30/00—Compositions for artificial stone, not containing binders
- C04B30/02—Compositions for artificial stone, not containing binders containing fibrous materials
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Abstract
The present invention provides a kind of powder, its formed body and cladding, and there is provided the powder that charging property is low, adhesive force is low during stirring.A kind of powder, it includes silica dioxide granule and inorfil, and aforementioned inorganic fiber is with Fe relative to the mass % of aforementioned inorganic fiber 1002O3Inorfil of the conversion comprising more than 1 mass % and below 40 mass % iron.
Description
Technical field
The present invention relates to powder, its formed body and cladding.
Background technology
At room temperature, the mean free path of air molecule is about 100nm.Therefore, with many of the following holes of diameter 100nm
Hole body can suppress the convection current produced wherein by air and be conducted heat caused by conduction, show heat insulating function.
Based on the heat insulating function, ultra-fine grain is used for heat-insulating material, so as to obtain the low heat-insulating material of pyroconductivity.Example
Such as, Patent Document 1 discloses a kind of heat-insulating material and its manufacture method, the heat-insulating material is to include silica and/or oxygen
Change aluminium, include particle diameter DSObtained from multiple little particles and shaping for more than 5nm and below 30nm, under compression ratio 0~5%
Maximum load is that more than 0.7MPa, the pyroconductivity at 30 DEG C are below 0.05W/mK.
Prior art literature
Patent document
Patent document 1：International Publication No. 2012/090566
The content of the invention
Problems to be solved by the invention
Nonetheless, it is intended that by above-mentioned heat-insulating material it is practical when, there is also the problems such as treatability beyond heat transfer rate.It is first
First, in the case of control pyroconductivity, the structure of heat-insulating material is only determined.For example, heat as selection silica is passed
The low raw material of the property led, making powder, and then as porous body, if hole therein becomes shorter than 100nm, must can expire
The pyroconductivity of prestige.
But, in the case where taking care of certain time after manufacturing above-mentioned powder, produced in the composition of powder deviation,
Or because the deadweight of powder causes to produce distribution in heap density.In this way, needing to be again stirring for mixing before construction or before shaping.
In addition, the problem of powder disclosed in above-mentioned patent document 1 is uprised there is also easy powered, adhesive force.
And then, the formed body and its sinter-hardened body that the powder of above-mentioned patent document 1 is formed also with it is upper
The powder stated is similarly easily powered.When its formed body or powered sinter-hardened body, adhesive force is uprised, due to the reason, is produced
The surface of heat-insulating material polish etc. treatability the problem of and the powder that adheres in the manufacture of cladding be attached to overcoating material
Cause the problem of poor sealing or yield reduction etc. are manufactured.
Therefore, it is an object of the present invention to provide stirring when the powder that charging property is low, adhesive force is low.
The solution used to solve the problem
Further investigation is repeated in order to solve the problems, such as above-mentioned conventional art in the present inventor etc., as a result finds：Include two
The powder of silicon oxide particle and specific inorfil can solve the problems, such as above-mentioned conventional art, so as to complete the present invention.
That is, the present invention is as described below.
[1] a kind of powder, it includes silica dioxide granule and inorfil,
Aforementioned inorganic fiber is with Fe relative to the mass % of aforementioned inorganic fiber 1002O3Conversion comprising more than 1 mass % and
The inorfil of below 40 mass % iron.
[2] powder recorded according to [1], wherein, aforementioned silicas particle includes particle diameter DSFor more than 5nm and 30nm with
Under multiple little particles.
[3] powder recorded according to [1] or [2], it also includes infrared ray opacification particle.
[4] powder recorded according to any one of [1]~[3], it also includes alumina particle.
[5] powder recorded according to any one of [1]~[4], it is used for heat-insulating material.
[6] a kind of formed body, its powder recorded comprising any one of [1]~[5].
[7] formed body recorded according to [6], wherein, the maximum load under more than 0% and less than 5% compression ratio is
More than 0.7MPa.
[8] a kind of cladding, its overcoating material for possessing core and storing foregoing core, the core includes [1]~[5]
Any one of record powder and/or [6] or [7] record formed body.
The effect of invention
According to the powder of the present invention, the low electric charge and low adhesive force during stirring can be obtained.
Embodiment
Hereinafter, it is described in detail for the mode (hereinafter referred to as " present embodiment ") for implementing the present invention.With
Under present embodiment be for illustrate the present invention illustration, the invention is not restricted to following present embodiment.The present invention can be with
Various modifications are carried out in the range of its purport to implement.
(powder)
The powder of present embodiment includes silica dioxide granule and inorfil, and aforementioned inorganic fiber is relative to foregoing nothing
The mass % of machine fiber 100 is with Fe2O3Inorfil of the conversion comprising more than 1 mass % and below 40 mass % iron.
<Silica dioxide granule>
The powder of present embodiment includes silica dioxide granule.The silica dioxide granule of present embodiment refers to include by group
Accepted way of doing sth SiO2The particle of the composition of expression and include SiO2Material, also including except including SiO2In addition also comprising metal ingredient,
The particle of inorganic compound etc..That is, silica dioxide granule can also include Si or various on the basis of pure silica
With the salt and composite oxides of the formation of other elements, hydrous oxide as hydroxide can also be included.In addition, dioxy
Silicon carbide particle can also have silanol group.Silica in silica dioxide granule can be crystalloid, can also be noncrystalline,
It can also be their mixture.When the silica of silica dioxide granule is noncrystalline, exists and used as heat-insulating material
In the case of the tendency that improves of the small, heat-insulating property of heat transfer that is produced by solid conduction, therefore preferably.
As silica dioxide granule, specifically, the oxide of the silicon such as " silica ", " quartz " can be included；Silicon
Partial oxide；The composite oxides of the silicon such as silica-alumina, zeolite；Na, Ca, K, Mg, Ba, Ce, B, Fe and Al
In the silicate (glass) of any one；Oxide, partial oxide, salt or the composite oxides (oxidation of element beyond silicon
Aluminium, titanium dioxide etc.) mixture with the oxide of silicon, partial oxide, salt or composite oxides；SiC, SiN etc. oxidation
Thing etc..
Relative to 100 mass % powders, preferably comprise silica more than 50 mass %, more preferably include 75 mass %
More than.By including more than 50 mass % silica, so that the heat transfer produced by solid conduction that there is powder diminishes, fit
It is suitable for the tendency of the purposes as heat-insulating material.By including more than 75 mass % silica, so that between there is powder
Aggregation force is high, the tendency tailed off of dispersing of powder.
According to the purposes of powder, powder can include the material in addition to silica dioxide granule and inorfil.For
Material in addition to silica dioxide granule is described in detail later, and powder, which is included, removes silica dioxide granule and inorfil
In the case of material in addition, relative to the two of the mass % of powder 100, preferably more than 50 mass % and below 99.9 mass %
Silica, more preferably more than 50 mass % and below 97.5 mass %, more preferably more than 60 mass % and 97.5 matter
Measure below %.Silica dioxide granule is more than 50 mass % and below 97.5 mass %, so as to include infrared ray opacification
In the case of the powders such as grain, there is the tendency for showing to suppress the effect that powder is dispersed, the heat-insulating property under high-temperature is improved.
In addition, silica dioxide granule is more than 60 mass % and below 97.5 weight %, so that the heap density that there is powder becomes smaller
Tendency.
Powder is used as to the situation of heat-insulating material, preferably at its used temperature, silica dioxide granule is to thermally-stabilised.
Specifically, when being kept for 1 hour under the maximum operation (service) temperature of heat-insulating material, preferably the quality of silica dioxide granule will not be reduced
More than 10%.In addition, silica dioxide granule preferably has water resistance.Specifically, the titanium dioxide of the water 100g relative to 25 DEG C
The meltage of silicon grain preferably less than 0.1g, more preferably less than 0.01g
For the proportion of silica dioxide granule, in order to close in the presence of the heap of heat-insulating material is made when powder is made into heat-insulating material
Spend the tendency diminished, preferably more than 2.0 and less than 4.0, more preferably more than 2.0 and less than 3.0, more preferably 2.0
Above and less than 2.5.Here, the proportion for wrapping silica containing inorganic compound particle refers to obtain using bottle method
True specific gravity.
The powder of present embodiment can only include a kind of silica dioxide granule, can also include two or more, preferably comprise
2 kinds of different silica dioxide granules of particle diameter, wrap silica containing little particle and bulky grain.By comprising particle diameter it is different 2
Kind of silica dioxide granule, so that little particle is different from the charging property and pyroconductivity of bulky grain, therefore by 2 kinds of silica
Grain is set to appropriate ratio, so as to adjust charging property and pyroconductivity.
The silica dioxide granule of present embodiment more preferably includes particle diameter DSFor multiple small of more than 5nm and below 30nm
Grain, further preferably comprising DSFor more than 5nm and below 25nm multiple little particles, particularly preferably comprising DSFor more than 5nm and
Below 20nm multiple little particles.Particle diameter DSFor more than 5nm, thus in the presence of as short grained silica dioxide granule in chemistry
The tendency that stable, heat-insulating property is easily stablized.Particle diameter DSFor below 30nm, so that in the presence of being used as short grained silica dioxide granule
Between contact area it is small, the powder heat transfer produced by solid conduction tails off, the tendency that pyroconductivity diminishes.Particle diameter DSFor
Below 25nm, so as to there is the tendency that pyroconductivity further diminishes.
The particle diameter of silica dioxide granule can be observed by using field emission type scanning electron microscope (FE-SEM), be obtained
Its homalographic equivalent circle diameter is determined.Average grain diameter can observe 100 particles with FE-SEM, obtain its homalographic circle equivalent
Diameter calculates number and averagely confirmed.Now, the particle using homalographic equivalent circle diameter less than 35nm is determined as little particle, will
Short grained particle diameter is set to particle diameter DS, being averaged for little particle particle diameter be set to DS is averaged, it is more than 35nm by homalographic equivalent circle diameter
Particle determined as bulky grain, the particle diameter of bulky grain is set to particle diameter DL, being averaged for bulky grain particle diameter be set to DL is averaged。
For the silica dioxide granule of present embodiment, DL is averagedMeet DS is averaged<DL is averaged, more preferably comprising more than 40nm and 60 μ
Below m multiple little particles, the multiple little particles for further preferably including less than more than 40nm and 10 μm, are particularly preferably included
Less than more than 40nm and 5 μm of multiple little particles.DL is averagedFor more than 40nm, so as to incline in the presence of resilience when powder is shaped is small
To.DL is averagedFor less than 60 μm, so as to there is the small tendency of pyroconductivity.DL is averagedFor less than 10 μm, so as to exist inorganic in powder
The tendency that fiber and infrared ray opacification particle etc. are equably mixed.DL is averagedFor less than 5 μm, so as to there is the attachment of particle
The tendency that the particle that power is big, come off from powder tails off.
DL is averagedPreferably DS is averagedMore than 2 times, more preferably more than 3 times, be more preferably more than 4 times.For more than 2 times,
The tendency that resilience diminishes when powder is shaped so as to exist.For more than 3 times, so as to have small particle silicas particle and big
The tendency that the bulk density of the powder of grain silica dioxide granule mixing is big, powder small volume, operability are uprised.For more than 4 times, so that
The difference that there is the particle diameter of small particle silicas particle and large granular silicon dioxide particle is big, large granular silicon dioxide particle is easy
The tendency disperseed relative to small particle silicas particle.During the favorable dispersibility of silica dioxide granule, powder is used as thermal insulation
In the case of material, there is the tendency that solid heat transfer diminishes.
<Inorfil>
The powder of present embodiment is relative to the mass % of inorfil 100 with Fe2O3Conversion includes more than 1 mass % and 40
The inorfil of below quality % iron.By with Fe2O3The nothing of iron of the conversion containing more than 1 mass % and below 40 mass %
Machine fiber, so as to suppress the charging property of powder, be tailed off in stirring to the attachment of stirring container.Its reason is simultaneously indefinite, but pushes away
Survey：There is iron oxide i.e. FeO as iron and Fe compounds of reducing condition etc. are in a ratio of with FeO, therefore it occurs with powder
The interaction of electricity, it is powered when suppressing to stir.In addition, thus it is speculated that：Inorfil has the high shape of length-width ratio, so that in stirring
When can well be contacted with powder and stirring container efficiency, thus it is shown that suppress from stirring produce body of powder electrification and to
The excellent properties of container attachment.
As the iron of present embodiment, specifically, Fe can be included；FeO、Fe2O3、Fe3O4Deng iron oxide；Fe
(OH)2、Fe(OH)3Deng iron hydroxide；The FeOOHs such as FeOOH；Iron sulfide, ferric sulfate, ferric nitrate, ferric acetate, ferric oxalate,
The molysite such as ferric carbonate, iron chloride, ferric phosphate；NaFeO2、NaFe2O3、KFeO2、K2FeO4、CaFeO2、CaFe2O4、MgFe2O4Deng oxygen
Change the salt of iron；NaFeSiO3、FeSiO4Deng ferrosilite class；NaFeSi2O6、KFeSi2O6、CaFeSi2O6、MgFeSi2O6Deng silicic acid
Molysite class；FeAl2O4Etc. iron aluminate could class；Na(Fe0.75Al0.25)O2、Ca2FeAlO5、MgFeAlO4Etc. iron aluminate could salt；FeTiO3
Deng Fe and Ti composite oxides；NaTiFeO4、KFeTi3O8、CaFeTi2O6、MgFeTi4O10Deng Fe and Ti composite oxides
Salt etc..
The iron phase of present embodiment is for the mass % of inorfil 100 with Fe2O3Conversion be more preferably more than 1 mass % and
Below 30 mass %, more preferably more than 1 mass % and below 25 mass %, particularly preferably more than 2 mass % and 25
Below quality %, further be particularly preferably more than 5 mass % and below 25 mass %.Iron is below 30 mass %, so as to deposit
In the tendency that heat-insulating property is excellent, it is below 25 mass %, so that there is inorfil is difficult cut-out, the tendency of excellent strength,
For more than 2 weight %, so that in the presence of the tendency improved to the dispersiveness of powder, be more than 5 mass %, thus in the presence of with powder
Aggregation force increase, the tendency dispersed for suppressing powder.
Fe2O3Conversion refer to total amount that each composition that will contain in inorfil converted in the way of oxide as
The mass % of inorfil 100, the iron of present embodiment on the other side is scaled Fe2O3Quality.Specifically, according to reality
Apply the assay method described in example and obtain.
The mass ratio of iron utilizes fluorescence X in the case where that can be classified inorfil from powder in inorfil
Ray is determined and obtained according to following method.By 1g inorfils and the Funaseru II powder of 1g avicel cellulose powder
(trade name, Funakoshi Co., Ltd.s system) in mortar mix 30 minutes after, by 2g mixed-powders be filled into internal diameter 25mm,
In thickness 5mm, the ring of width 3mm vinyl chloride, thickness 3mm is compressed and molded into using press, measure sample is made.Carry out the examination
The total qualitative analysis of sample, fundamental parameters method (fundamental parameter are utilized into division aspect in the form of the oxide
Method Fe Fe) is obtained2O3Reduced mass %.Funaseru II powder is excluded from calculating as solder flux.For example, conduct
Fluorescent X-ray determines device, uses sweep type fluorescent x-ray analyzer ZSX PrimusII (trade name, Rigaku
Corporation systems) situation, in advance by Funaseru II powder to constitute C6H10O5The mode of solder flux carry out compound
Log in, selection sample pattern is block, into division aspect be oxide, solder flux is that Funaseru II powder, dilution rate are 1, passes through reality
SQX is applied to calculate to obtain Fe2O3Quality %.
In addition, in the case that the inorfil in heat-insulating material can not be classified due to reasons such as sintering from powder, passing through
The iron content of inorfil seen in section to heat-insulating material carries out SEM-EDX and determines to obtain.
For the inorfil of present embodiment, average thickness of the average length relative to inorfil of inorfil
Ratio (length-width ratio) be preferably more than 10, more preferably more than 50, more preferably more than 100.Length-width ratio is more than 10, from
And in the case that powder is formed for presence, the tendency that can be formed by small pressure.In addition, length-width ratio is more than 50,
So as to there is the tendency for the productivity ratio for improving formed body.And then, length-width ratio is more than 100, so that the bending that there is formed body is strong
The excellent tendency of degree.
The length-width ratio of inorfil is by the fineness degree using the FE-SEM inorfils 100 being measured and length
Average value and obtain.
Inorfil single dispersing, mixing preferably in powder, but it is also possible to the state or many mutually wound with inorfil
Individual inorfil collects bundles of state mixing in the same direction.In addition, inorfil is under monodisperse status, or nothing
The direction of machine fiber is state unified in same direction.Wherein, from the viewpoint of pyroconductivity is reduced, inorfil is preferred
It is orientated in vertical direction relative to heat transfer direction.
As inorfil, specifically, long glass fiber (long filament) (SiO can be included2-Al2O3-B2O3-CaO)、
Mineral wool (SiO2-Al2O3-CaO-Na2O), alkali-resistant glass fibre (SiO2-ZrO2-CaO-Na2O), asbestos (basalt wool)
(SiO2-Al2O3-Fe2O3- MgO-CaO), slag wool (SiO2-Al2O3- MgO-CaO), ceramic fibre (mullite fiber) (Al2O3-
SiO2), silicon dioxide fibre (SiO2), alumina fibre (Al2O3-SiO2), basalt fibre (SiO2-Al2O3-Fe2O3-MgO-
CaO), potassium titanate fibre, alumina whisker, silicon carbide whisker, silicon nitride crystal whisker, calcium carbonate crystal whisker, alkali magnesium sulfate crystal whisker, sulphur
Sour calcium pyroborate (gypsum fiber), ZnOw, Zirconium oxide fibre, carbon fiber, graphite whisker, phosphate fiber, AES
(Alkaline Earth Silicate) fiber (SiO2-CaO-MgO)；The wollastonites of natural minerals, sepiolite, attapulgite,
Shepardite etc..If these inorfils are with Fe2O3Iron rule of the conversion comprising more than 1 mass % and below 40 mass % be not special
Limit.
When modulating these inorfils, using the raw material comprising iron or adjust its usage amount, so as to obtain with
Fe2O3Inorfil of the conversion comprising more than 1 mass % and below 40 mass % iron.
As inorfil, SiO is preferably comprised from the viewpoint of heat-insulating property2.Inorfil includes SiO2It can pass through
Above-mentioned XRF confirms.As including SiO2Inorfil, specifically, long glass fiber (long filament) can be included
(SiO2-Al2O3-B2O3- CaO), mineral wool (SiO2-Al2O3-CaO-Na2O), alkali-resistant glass fibre (SiO2-ZrO2-CaO-
Na2O), asbestos (basalt wool) (SiO2-Al2O3-Fe2O3- MgO-CaO), slag wool (SiO2-Al2O3- MgO-CaO), ceramics it is fine
Tie up (mullite fiber) (Al2O3-SiO2), silicon dioxide fibre (SiO2), alumina fibre (Al2O3-SiO2), basalt fibre
(SiO2-Al2O3-Fe2O3- MgO-CaO), AES (Alkaline Earth Silicate) fiber (SiO2- CaO-MgO), it is natural
Wollastonite, sepiolite, attapulgite of mineral etc..
As inorfil, Al is preferably comprised from the viewpoint of heat resistance2O3.Inorfil includes Al2O3It can pass through
Above-mentioned XRF confirms.As including Al2O3Inorfil, specifically, long glass fiber (long filament) can be included
(SiO2-Al2O3-B2O3- CaO), mineral wool (SiO2-Al2O3-CaO-Na2O), asbestos (basalt wool) (SiO2-Al2O3-
Fe2O3- MgO-CaO), slag wool (SiO2-Al2O3- MgO-CaO), ceramic fibre (mullite fiber) (Al2O3-SiO2), aluminum oxide
Fiber (Al2O3-SiO2), basalt fibre (SiO2-Al2O3-Fe2O3- MgO-CaO), the attapulgite of natural minerals etc..
The average thickness of inorfil is from preventing from the viewpoint of dispersing preferably more than 1 μm.Feelings as heat-insulating material
Under condition, it is preferably less than 20 μm to be produced from suppression by solid conduction from the viewpoint of conducting heat.For the average thickness of inorfil
Degree, the fineness degree of inorfil 100 is obtained using FE-SEM, it is averaged and obtained.
The inorfil of present embodiment relative to the mass % of powder 100 preferably more than 0.1 mass % and 20 mass % with
Under, more preferably more than 0.5 mass % and below 15 mass %, further preferred more than 0.5 mass % and below 10 mass %.Nothing
Machine fiber is more than 0.1 mass %, so as to there is the tendency for suppressing charging property.In addition, inorfil is below 20 mass %, from
And there is the tendency that pyroconductivity diminishes.And then, it is more than 0.5 mass % and below 20 mass %, so as to have fiber to mixed
The influence of the attachment of conjunction container wall diminishes, the tendency of the repeatability of fiber content well, is more than 0.5 mass % and 15 mass %
Hereinafter, it is more than 0.5 mass % and below 10 mass % so as to become readily tendency in the presence of agglomerate etc., mixing is not produced, from
And resilience when shaping diminishes, is difficult to cause the tendency of forming defects, productivity ratio well.
According to inorfil, there is also the situation for implementing the high surface treatment of insulating properties, but it is also possible to is cleaning inorganic fibre
Dimension etc. removes high surface conditioning agent of insulating properties etc. afterwards as the raw material of powder.
<Infrared ray opacification particle>
The powder of present embodiment also includes infrared ray opacification particle, from the sight for obtaining the heat-insulating property under high-temperature
Point sets out preferably.Infrared ray opacification particle refers to include reflection, scatters or absorb the particle of ultrared material.In powder
During comprising infrared ray opacification particle, suppress the heat transfer produced by radiation, therefore there is particularly more than 200 DEG C of high-temperature
The high tendency of heat-insulating property under region.
As infrared ray opacification particle, specifically, zirconium oxide, zirconium silicate, titanium dioxide, ferrotitanium can be included
The charcoal such as oxide, iron oxide, cupric oxide, carborundum, gold ore, chromium dioxide, manganese dioxide, graphite material, carbon fiber, point are brilliant
The particle of stone pigment, aluminium etc., the particle of stainless steel, particle, the particle of cu zn alloy, the particle of copper/evanohm of bronze etc..
For these metallic particles or non-metallic particle, it can be used alone, and two or more can also be used.
Among these infrared ray opacification particles, the preferred particle of zirconium oxide, zirconium silicate, titanium dioxide, carborundum.
The composition of infrared ray opacification particle is obtained using FE-SEM EDX.
The average grain diameter of infrared ray opacification particle is preferably more than 0.5 μm and less than 30 μm, more preferably 0.5 μm with
Go up and less than 10 μm.Average grain diameter is more than 0.5 μm, so that in the presence of the excellent tendency of the heat-insulating property more than 200 DEG C, it is average
Particle diameter is less than 30 μm, so that in the presence of the tendency excellent less than heat-insulating property at 200 DEG C brought by the suppression of solid conduction.
In addition, the size of inorfil and silica dioxide granule is also depended on, in the average grain diameter D of silica dioxide granuleSAnd DLFor
In the case of less than more than 5nm and 50 μm, the average grain diameter of infrared ray opacification particle is more than 0.5 μm and less than 10 μm,
So as to which the mixing existed with silica dioxide granule becomes easy tendency.It should be noted that infrared ray opacification particle
Average grain diameter with above-mentioned silica dioxide granule identical method by obtaining.
Infrared ray opacification particle be preferably more than 0 mass % relative to 100 mass % powders and 49.5 mass % with
Under, more preferably more than 2 mass % and below 30 mass %.Infrared ray opacification particle is below 49.5 mass %, so that
In the presence of the high tendency of small, less than 200 DEG C the heat-insulating property of heat transfer produced by solid conduction.Infrared ray opacification particle is 2
More than quality %, so that the tendency improved in the presence of the heat-insulating property more than 200 DEG C, infrared ray opacification particle is 30 matter
Below % is measured, so as to become easy tendency in the presence of the mixing with silica dioxide granule.
For the mass ratio of infrared ray opacification particle, SEM-EDX determines the composition of infrared ray opacification particle,
After investigation element that only infrared ray opacification particle contains, using fluorescent x-ary analysis its element is quantified from
And can obtain.
<Alumina particle>
The powder of present embodiment also includes alumina particle, from the viewpoint of high-fire resistance is obtained preferably.Aluminum oxide
Particle refers to include by composition formula Al2O3The particle of the material of expression.Contained alumina particle can be comprising pure in powder
By Al2O3The particle of the material of expression, can also be to include Al and the various formation with other elements salt or composite oxides
Material particle.Specifically, particle comprising following material etc. can be included：Aluminium oxide (Alpha-alumina, γ-
Aluminum oxide, beta-alumina, θ-aluminum oxide, gaseous oxidation aluminium, amorphous aluminum oxide etc.), it is aluminium hydroxide, compound comprising aluminium etc.
Oxide (silica alumina, zeolite etc.), by the material of oxide obtained from the surface oxidation of aluminium carbide, aluminium nitride etc.
Material.
Among these alumina particles, from the viewpoint of heat-insulating property and heat resistance is had concurrently, preferably comprise Alpha-alumina,
Gama-alumina, θ-aluminum oxide, the particle of the material of gaseous oxidation aluminium.In addition, the heap density that there is powder in shaping become it is big,
Shaping readily tendency, therefore the more preferably particle of the material comprising Alpha-alumina.
In formed body contain comprising Alpha-alumina, gama-alumina, the material of θ-aluminum oxide particle, can be porous by determining
The powder x-ray diffraction of body determines (XRD) to confirm.Specifically, for its XRD case, can by during Alpha-alumina by JCPDS
The position of d values shown in card numbering 46-1212 has peak, by the d shown in JCPDS card numberings 23-1009 during gama-alumina
The position of value has when peak, θ-aluminum oxide has peak by the position of the d values shown in JCPDS card numberings 35-0121, so that really
Recognize.It should be noted that can be by d values during Alpha-alumina To confirm, gama-alumina when can be by d values To confirm, θ-aluminum oxide when can be by d values To confirm.
Alumina particle is preferably with respect to the mass % of powder 100 with Al2O3Conversion includes more than 1 mass % and 80 mass %
Following aluminium, more preferably comprising more than 1 mass % and below 40 mass %, further preferably include more than 1 mass % and 25 matter
Measure below %.Alumina particle includes more than 1 mass %, thus in the presence of when exhibiing more than 900 DEG C of temperature, suppress formed body
Heat-insulating property change tendency.Alumina particle includes below 80 mass %, so that in the presence of can suppress the quality of formed body
The tendency that increase and heat-insulating property are reduced.Comprising the alumina particle below 25 mass %, so that the attachment that there is powder diminishes
Tendency.
The mass ratio of alumina particle with the measure identical method of above-mentioned silica dioxide granule content by utilizing glimmering
Light X-ray is determined and obtained.
Powder or formed body are immersed in from suppression water, occur the sight of treatability reduction, the deformation of formed body and cracking etc.
Point sets out, and powder preferably also contains waterproofing agent.As waterproofing agent, specifically, can include solid paraffin, Tissuemat E,
The wax such as acrylic acid ethylene co-polymer wax system waterproofing agent；The silicon such as organic siliconresin, dimethyl silicone polymer, alkylalkoxy silane
It is waterproofing agent；The fluorine system waterproofing agents such as perfluoroalkyl carboxylate, perfluoralkyl phosphate, perfluoroalkyl leptodactyline；Include alkane
The silane couplers such as base, the alkoxy silane of full-fluorine group；Trim,ethylchlorosilane, 1,1,1,3,3,3- HMDSs etc.
Silylating agent etc..They can use one kind or two or more.They can directly use, can also be with solution, emulsion
Mode is used.Preferred wax system waterproofing agent, silicon systems waterproofing agent among them.
From the viewpoint of enough waterproof effects are assigned, powder total quality is preferred relative to the ratio of the quality of waterproofing agent
For more than 100/30 and less than 100/0.1, more preferably more than 100/20 and less than 100/0.5, more preferably 100/10
Above and less than 100/1.
(manufacture method of powder)
The powder manufacture method of present embodiment preferably has by the powder comprising silica dioxide granule and with Fe2O3Conversion
The mixed processes of the inorfil mixing of iron comprising more than 1 mass % and below 40 mass %.
, can be using the particle with silica composition by conventional preparation method manufacture as original as silica dioxide granule
Material.Specifically, as the silica dioxide granule as raw material, it can include：By wet under conditions of acid or alkalescence
The particle that silicate ion is condensed and manufactured by formula method；Manufactured comprising alkoxy silane is hydrolyzed/is condensed by damp process
The inorganic compound particle of silica；The silica dioxide granule that the silica composition manufactured by damp process is sintered and manufactured
Deng.In addition, can be to fire the compound of the silicon such as chloride in the gas phase as silica containing inorganic compound particle is wrapped
The particle for burning and manufacturing.And then, silica dioxide granule can be to make heating silicon metal, comprising silicon gas obtained from the raw material of silicon
Oxidation, the particle for burning and manufacturing, or the particle that silica etc. is melted and manufactured.
As silica containing inorganic compound particle is wrapped, natural silicate mineral can be used.As natural
Mineral, specifically, can include olivine class, allochite class, quartz, feldspar, zeolites etc..
In silica dioxide granule the contained composition in addition to silica composition can utilize in above-mentioned preparation method
The material that exists in raw material in the way of impurity, it can also be added in the manufacturing process of silica.
As the preparation method of known silica, following methods can be included.
(silica synthesized using damp process)
The gel silica manufactured in acid condition using sodium metasilicate as raw material.
The precipitated silica manufactured in the basic conditions using sodium metasilicate as raw material.
The silica synthesized by the hydrolyzing/condensing of alkoxy silane.
(silica synthesized using dry process)
The aerosil that the chloride burning of silicon is manufactured.
The silica that silicon metal gas is burnt and manufactured.
Manufacture ferrosilicon when etc. by-product fine silica powder.
The silica manufactured using arc process, plasma method.
The SiO 2 powder of crushing is melted in flame, the fused silica of spheroidizing.
Among above-mentioned silica, from the viewpoint of productivity ratio and cost, more preferably using aerosil,
Burning silicon metal gas and make silica, fine silica powder, fused silica.
(mixed processes)
For the mixed processes of present embodiment, at least mix silica dioxide granule and inorfil and then can also mix
Close infrared ray opacification particle and alumina particle.Silica dioxide granule and inorfil can use mixer (specific
For, revise mixer described in six editions chemical engineering handbooks (ball is apt to) etc.) mix., specifically, can as mixer
To include：As container rotating type (container itself rotation, vibration, shake) horizontal cylinder type, V-type (can be with paddle
Piece), bicone, cubic type and shake it is rotary-type；It is used as mechanical stirring (container fixed, be stirred with blade etc.)
Single shaft banding pattern, many axoplasm types, rotation rake, dual shaft planetary stirred type, circular cone screw type, high-speed stirred type, rotary disk type,
Belt roller rotation container type, band stirring rotation container type, high speed elliptic rotor type；(entered as flowing stirred type using air, gas
Row stirring) airflow stirring type, using gravity without stirred type etc..These mixers can also be applied in combination.
Mixed processes can use pulverizer (specifically, to revise the powder described in six editions chemical engineering handbooks (ball is apt to)
Broken machine etc.), side pulverized particles or block inorfil or improve particle, the dispersiveness of inorfil, side mixing.
As pulverizer, specifically, can include roller mill (high pressure compressed roller mill, roller rotary grinder),
Bruisher, crushing mill (multi-mull mixer, Chilean formula edge runner), cut-out shearing grinder (shredding machine etc.), rod mill, from
Grinding machine (aerofall mill, cascade mill etc.), vertical roll grinder (ring roller mill, roller finishing machine, ball grinding
Machine), at a high speed rotation mill (hammer-mill, cage mill, pulverizer, screen mill, dials formula grinding machine), grader internally-arranged type at a high speed rotate
Mill (fixed impact template grinder, Scroll-type grinder, centrifugal classification type grinder, circular-gap sand mill), container driving are situated between
Matter grinder (rotary mill (mill,pot, tube mill, conical ball mill), vibrator (circular vibration mill, rotation
Vibromill, centrifugal mill), planetary mills, centrifugal flowization mill), media-agitation type mill it is (tower mill, stirring slot type grinder, sleeping
Formula circulation slot type grinder, vertical circulation slot type grinder, circular-gap sand mill), jet mill (air-flow induction type, spray
Blowing-type is sprayed by type, conflict type, fluidized bed in mouth), compacting cutting mill (high speed centrifugation roller is ground, interior grinding formula), mortar, mill
Stone etc..These pulverizers can also be applied in combination.
Among these mixers and pulverizer, in the powder mixer with stirring vane, at a high speed rotation mill, grader
Put type at a high speed rotation mill, container driving medium grinder, compacting cutting mill exist improve the particle such as silica dioxide granule with it is inorganic
The dispersed tendency of fiber, therefore preferably.From the further dispersiveness for improving the particles such as silica dioxide granule and inorfil
From the viewpoint of, the peripheral speed on the top of stirring vane, swivel plate, hammer plate, blade, pin etc. be preferably set to 100km/h with
Above, more preferably it is set to more than 200km/h, is further preferably set to more than 300km/h.
In the case of mixing multiple species of particle, particle is preferably put into by mixer with the ascending order of bulk density
Or pulverizer.In the case of using infrared ray opacification particle, preferably infrared ray is added after mixing silica dioxide granule
Opacification particle simultaneously mixes and then added inorfil and mix.
Powder is used as to the situation of heat-insulating material, only can arrive used by powder filled not via processes such as shapings
Position is directly used, and can also will shape obtained material as heat-insulating material by powder pressing.
The formed body of powder comprising present embodiment can be press-formed by the powder to present embodiment and
Obtain.As the method that press molding is carried out to powder, specifically, it can include：(plunger type adds the compressing method of mould
Pressing formation method), rubber rolling process (hydrostatic pressing forming process), extrusion molding method, previously known ceramic press molding method etc..They
Among from the viewpoint of productivity ratio the compressing method of preferred mold.
In the compressing method of mould or rubber rolling process by it is powder filled into mould in the case of, to powder apply shake
It is dynamic to wait when being filled uniformly with because presence make the tendency in uniform thickness of formed body, therefore preferably.In addition, side is to mould
Depressurized in tool, the side that deaerates, into mould, can in a short time shape powder filled, therefore go out from the viewpoint of productivity ratio
Hair is preferred.
The heap density of formed body is preferably 0.25g/cm3Above and 2.0g/cm3Below, it is more preferably 0.25g/cm3More than
And 1.7g/cm3Below, it is more preferably 0.25g/cm3Above and 1.5g/cm3Below.Heap density is 0.25g/cm3Above and
2.0g/cm3Hereinafter, so as to there is the tendency for mitigating burden when carrying.Specific assay method is utilized in embodiment described later
The method of record is determined.
Shaping can be controlled by the pressure pressurizeed, can also be controlled by the heap density of formed body.Wherein, by adding
In the case of the Stress control molding condition of pressure, according to the sliding of the powder used, air between powder granule, pore enters
Enter amount etc., under pressurised conditions with the process of retention time, pressure value changes.In contrast, formed body is being utilized
In the case that heap density is controlled, exists and do not need control time, easily reach the maximum load of resulting formed body
Desired value, production management become easy tendency, therefore preferably.
For the formed body of present embodiment, the maximum load under more than 0% and less than 5% compression ratio is preferably 0.7MPa
More than.Specific assay method is determined using the method described in embodiment described later.
Formed body in powder or press molding or after press molding is sufficient in the heat resistance of powder or formed body
When in the range of the condition of temperature and time, after the absorption water that is thermally dried, removes powder or formed body for practicality,
Pyroconductivity step-down, therefore preferably.And then can also implement to heat.
Shaping can be only that the formed body obtained by press molding, but preferred pair press molding is heated.To inciting somebody to action
When powder carries out the formed body implementation heating that press molding is obtained, there is the tendency of compressive strength raising, be especially in the presence of
The tendency that can be suitably used in the big purposes of the load for formed body.
From the viewpoint of dimensional stability, the temperature of heating, which is preferably more than its powder or the highest of formed body, to be made
With the high temperature of temperature.It is different according to the purposes of powder or formed body, preferably more than 400 DEG C and less than 1200 DEG C, more preferably
For more than 500 DEG C and less than 1200 DEG C, more preferably more than 600 DEG C and less than 1200 DEG C.
The atmosphere heated as powder or formed body, specifically, can include in air (or in air), oxygen
Change property atmosphere in (oxygen, ozone, nitrogen oxides, carbon dioxide, hydrogen peroxide, hypochlorous acid, inorganic organic peroxide etc.), with
And in non-active gas atmosphere (helium, argon, nitrogen etc.) etc..Heating treatment time can be according to heat treatment temperature and heat-insulating material
Amount and suitably select.Heat can will be above-mentioned powder filled to implementing after used position, can also by
Implement after powder pressing shaping.
(cladding)
The cladding of present embodiment possesses the core comprising above-mentioned powder and/or above-mentioned formed body and stores the outer of core
Cover material.It should be noted that powder or formed body are referred to as into core sometimes.
<Overcoating material>
As the overcoating material of present embodiment, as long as can then not have with core of the collecting bag containing powder and/or formed body
It is particularly limited to, specifically, can includes：The inorganic fibre fabrics such as glass cloth, alumina fibre cloth, titanium dioxide silicon cloth,
Inorfil braid, polyester film, polyethylene film, polypropylene screen, nylon membrane, polyethylene terephthalate film, fluorine system tree
The metal foils such as the resin films such as adipose membrane, plastic-metal film, aluminium foil, stainless steel foil, copper foil, ceramic paper, inorganic fiber nonwoven fabrics, have
Machine fabric nonwoven cloth, all-glass paper, carbon fiber paper, asbestos paper, inorganic fill paper, organic fiber paper, ceramic coating, fluororesin
Resinous coats such as coating, silicone resin coating etc..
Thickness for being cladded with material, in the case that cladding is used as into heat-insulating material, from the thermal capacitance for reducing overcoating material
It is more thin more preferred from the viewpoint of amount, can suitably it be selected according to behaviour in service, necessary intensity etc..
Can also be overcoating when using in the case of the material that overcoating material is also stablized at a temperature of being included in use core
Material storage is used as the powder of core or the state of formed body.In the case of the cladding used at high temperature, from the rear core of use
From the viewpoint of the processing of material is easy, the preferred high overcoating material of heat resistance.Wherein, " the overcoating material " in this specification refers to
In addition to the material of core is stored when using core, the material that core is stored in the carrying of core, working procedure is also included within.
That is, being cladded with material includes only when carrying or the when of construction protection core, the material for melting and/or volatilizing when in use, therefore outside
Covering organic principle contained in material its own and overcoating material can also melt or disappear under the temperature in use of core.
As overcoating material, from the viewpoint of cladding process is easy, preferably glass cloth, alumina fibre cloth, titanium dioxide
The inorganic fibre fabrics such as silicon cloth, inorfil braid, polyester film, polyethylene film, polypropylene screen, nylon membrane, poly- terephthaldehyde
Metal foil, the ceramics such as the resin films such as sour glycol ester film, fluorine resin film, plastic-metal film, aluminium foil, stainless steel foil, copper foil
Paper, inorganic fiber nonwoven fabrics, organic fiber non-woven fabrics, all-glass paper, carbon fiber paper, asbestos paper, inorganic fill paper, organic fibre
Tie up plate shape material as paper etc..
Cladding is in the case of applied at elevated temperature, as overcoating material, from the viewpoint of heat endurance, more preferably glass
The inorganic fibre fabrics such as cloth, alumina fibre cloth, titanium dioxide silicon cloth, inorfil braid, ceramic paper, inorfil nonwoven
Cloth.As overcoating material, from the viewpoint of intensity, further preferred inorganic fibre fabric.
Cladding includes silica dioxide granule and inorfil, further will be added with particle diameter than larger according to behaviour in service
Silica dioxide granule, infrared ray opacification particle, powder formed by alumina particle as core, be filled into and be processed as
Bag-shaped or tubulose overcoating material.Furthermore, it is possible to carry out press molding to the powder and be made after formed body as core, use
Overcoating material cladding.
Powder relative to the volume that overcoating material is formed filling rate using powder as core in the case of, can be by powder
Body is suitably set according to used object.Using formed body as in the case of core, as described later, can by powder with
Overcoating material together press molding, can also be coated after powder pressing is shaped with overcoating material.
With overcoating material coat core method be not particularly limited, can implement simultaneously core modulation or shaping, with
And cladding with overcoating material, can also be coated after modulating or shaping core with overcoating material.
Overcoating material is inorganic fibre fabric, resin film, plastic-metal film, metal foil, ceramic paper, inorfil nonwoven
The side of the sheets such as cloth, organic fiber non-woven fabrics, all-glass paper, carbon fiber paper, asbestos paper, inorganic fill paper, organic fiber paper
In the case of formula, specifically, can with the suturing of inorfil line or resin fibre line etc., being adhesively fixed of overcoating material,
Suture is coated with both Nian Jie grades.
The overcoating material of sheet is the situation of resin film, plastic-metal film, metal foil etc., from the difficulty of cladding process
From the viewpoint of preferably vacuum packed, shrink-wrap.
Overcoating material with bristle or sprayer to core by that in the case that ceramic coating, resinous coat etc. are formed, can be entered
Row coating, so as to coat core with overcoating material.
The indenture of wire can be set on the cladding of the core with press molding and overcoating material, cladding is assigned
Give flexibility.The form of line can be selected according to the behaviour in service of cladding linearly, curve-like, dotted line shape etc., can also
Combine two or more of them.The thickness of line, the depth of indenture according to the thickness of cladding, intensity, behaviour in service and determine.
Overcoating material can coat the surface entirety of core, can also partly coat core.
In the case of using the overcoating material with thermal bonding, bag filling machine can be used.As bag filling machine,
Specifically, can include as the machine with the function of being filled powder in bag, seal, cut, with
Filled in bag, the bag of cutting machine of sealed function etc. after powder to being cladded with material.In order to arrive bag by powder filled
It is interior, feed pipe (being used to flowing powder into the chute shape of conveying or the apparatus of tubulose from high to lower) can be used, powder
When powered few, exist suppress powder into feed pipe and sealing surface attachment tendency.
The cladding of present embodiment is present is easier processing, application property also excellent tendency than powder and formed body.
Powder, formed body and the cladding of present embodiment are preferred for heat-insulating material.For heat-insulating material, so as to
To obtain low pyroconductivity, treatability and the excellent heat-insulating material of manufacturing.Powder, formed body and the bag of present embodiment
Sound-absorbing material, soundproof material, acoustic material, anti-noise-reflecting material, noise reduction material can also be preferred in addition to heat-insulating material by covering body
Material, grinding agent, catalyst carrier, adsorbent, adsorb the carrier of the chemical reagent such as aromatic or bactericide, deodorant, deodorant,
Humidity adjusting material, filler, pigment etc..
Embodiment
Hereinafter, enumerate specific embodiment and comparative example present embodiment is described in more detail, present embodiment is only
Otherwise more than its purport, then it is not limited to these embodiments and comparative example.In following embodiment and comparative example, powder
Body, formed body are evaluated as described below.
(1) composition analysis based on XRF, the assay of iron relative to inorfil
By the Funaseru II powder of 1g inorfils and 1g avicel cellulose powder (trade name, Funakoshi Co.,
Ltd. make) carried out with mortar after mixing in 30 minutes, 2g mixed-powders are filled into internal diameter 25mm, thickness 5mm, width 3mm chloroethene
In the ring of alkene, thickness 3mm is compressed and molded into using press, the measure sample of x-ray fluorescence analysis is made.In sweep type fluorescence
In x-ray analysis equipment ZSX PrimusII (trade name, Rigaku Corporation systems), in advance by Funaseru II powder
End is to constitute C6H10O5The mode of solder flux carry out compound login, to determining after sample carries out total qualitative analysis, sample mold
Formula selection block, into division aspect selective oxidation thing, solder flux selection Funaseru II powder, dilution rate selection 1, implement SQX calculating,
Iron relative to the mass % of inorfil 100, containing in inorfil is scaled Fe2O3And determine content (quality %).Together
Sample, it is scaled SiO according to by silicon2, aluminium is scaled Al2O3Content (quality %) etc., for as described in table 1
Various composition measuring contents.
(2) carried charge evaluation, the tack evaluation of the stirring based on powder
50g powder samples are put into and are provided with the 2L of stirring seal φ 140mm SUS304 containers, will be pacified
The SUS316 agitating shafts of 4 pieces of agitating paddles with angle equipped with 2 φ mm of SUS316 systems 75 are installed on via stirring seal and stirred
Motor SM-101 (AS ONE Corporation systems) is mixed, after being sealed to container, it is rotated 1 minute with 3000rpm.So
Afterwards, container cover is opened, container is rotated the powder inside 180 degree, discharge.Now, using springtime Electric Co., Ltd's system
Coulombmeter NK-1001 and Faraday cage KQ-1400 determine the carried charge (nC/g) of powder.Commented for tack
Valency, measure is attached to container, unrenewable powder quality (g).
(3) the heap density measurement of formed body, sinter-hardened body
Determine vertical about 30cm, horizontal about 30cm, thickness about 20mm formed body and its sinter-hardened body sample size and
Quality, quality divided by volume, so as to determine heap density (g/cm3)。
(4) formed body, 30 DEG C of pyroconductivity of sinter-hardened body are determined
Using as be configured to vertical about 30cm, horizontal about 30cm, the formed body of the porous body of thickness about 20mm shapes and its
Sinter-hardened body for the pyroconductivity (W/mK) at 30 DEG C, uses use heat-flow meter HFM 436Lambda as sample
(trade name, NETZSCH societies system), determines pyroconductivity.Correction is based on JISA1412-2, uses density 163.12kg/m3, thickness
25.32mm NIST SRM 1450c correction on-gauge plates, under conditions of the temperature difference of high temperature side and low temperature side is 20 DEG C,
15th, 20,24,30,40,50,60, implement in advance at 65 DEG C.
(5) the charging property evaluation of formed body, sinter-hardened body
Device NS-D100 (trade name, Nano Seeds Corporation systems) is determined using electrostatic charge diffusivity,
In 20 DEG C of temperature, humidity 50%RH Constant Temperature and Humidity Chambers, relative to be configured to diameter about 4cm, thickness 10mm it is discoideus into
The sample of body and its sinter-hardened body, 10mm is set to by corona discharge position and with the distance of surface potential meter.Carry out
It is powered that the corona discharges of 10 seconds pin electrodes by 6kV is produced, behind 1 second using surface potential meter to carrying out corona charging with
And the surface potential (kV) after 10 seconds is measured.Determine based on JIS C 61340-2-1 to implement.
(6) measure of the maximum load of sinter-hardened body
Cut by the sample as sinter-hardened body and make the 1 side cube equal with the thickness of porous body, use precision
Universal testing machine AUTOGRAPH AG-100KN (Shimadzu Scisakusho Ltd's system), are determined sample relative to thickness reduction
Maximum load (MPa) under more than 0% and less than 5% compression ratio.
[embodiment 1]
Aerosil, 4000g average grain diameters that 1600g average grain diameters are 14nm are equably mixed with hammer-mill is
120nm fine silica powder, 1200g zirconium silicates and 800g alpha-aluminium oxides, obtains mixed powder.
By the content of the 3960g mixed powders and iron with Fe2O3It is 13 μm, average fibre to be scaled 26.9%, average fiber footpath
The basalt fibre 40g for tieing up a length of 6mm is mixed with high-speed shearing Mixer, obtains powder.Carry out the stirring based on the powder
Carried charge is evaluated, tack evaluation (above-mentioned (2)).Show to be based on above-mentioned (1) in the inorfil of inorfil in table 1
XRF composition analysis result, shows the result that charging property evaluation, tack are evaluated in table 2.
It is 0.40g/cm to obtain vertical 30cm, horizontal 30cm, thickness 2cm, heap density3Formed body, in vertical 30cm, horizontal stroke
720g is filled in 30cm mould by powder obtained above, press molding is carried out, heap density is obtained for 0.40g/cm3Shaping
Body.Evaluate the pyroconductivity of above-mentioned (4) at 30 DEG C of the formed body.Result is shown in table 2.
In order to obtain diameter 4cm, thickness 1cm, heap density for 0.40g/cm3Formed body, filled out in diameter 4cm mould
5g is filled by powder obtained above, press molding is carried out, and obtains heap density for 0.40g/cm3Formed body.Evaluate the formed body
Above-mentioned (5) charging property.Result is shown in table 2.
It is 0.50g/cm to obtain vertical 30cm, horizontal 30cm, thickness 2cm, heap density3Formed body, in vertical 30cm, horizontal stroke
900g is filled in 30cm mould by powder obtained above, press molding is carried out, heap density is obtained for 0.50g/cm3Shaping
Body.The formed body is sintered 1000 DEG C × 1 hour, thickness 1.8cm, heap density 0.62g/cm is obtained3Sinter-hardened body.For
The sinter-hardened body, evaluates the pyroconductivity at 30 DEG C of above-mentioned (4) and the compressive strength of above-mentioned (6).Knot is shown in table 2
Really.
In order to obtain diameter 4cm, thickness 1.2cm, heap density for 0.50g/cm3Formed body, in diameter 4cm mould
8g is filled by powder obtained above, press molding is carried out, heap density is obtained for 0.50g/cm3, discoideus formed body.Will
The formed body is sintered 1000 DEG C × 1 hour, obtains thickness 1.0cm, heap density 0.62g/cm3Sinter-hardened body.For the burning
Hardenite is tied, the charging property of above-mentioned (5) is evaluated.Result is shown in table 2.
And then modulate 2 pieces of above-mentioned thickness 1.8cm, heap density 0.62g/cm3Sinter-hardened body, make straight by blocking
Footpath 28cm, thickness 1.8cm 2 pieces of discoideus samples.Device (the great smart machine strain formula meeting of English is determined using hot plate method pyroconductivity is protected
Society's system), the pyroconductivity at 800 DEG C is determined, is as a result 0.115 (W/mK).Result is shown in table 2.
[comparative example 1]
The use of average fiber footpath it is 10 μm, a length of 6mm of average fiber E glass fibres as inorfil, in addition
Powder is obtained with method similarly to Example 1.The composition analysis based on XRF of the inorfil of above-mentioned (1) is shown in table 1
Result.Carry out carried charge evaluation, the tack evaluation (above-mentioned (2)) of the stirring based on the powder.Result is shown in table 2.
In addition to resulting powder, vertical 30cm, horizontal 30cm, thickness 2cm, heap density are obtained similarly to Example 1
For 0.40g/cm3Formed body, evaluate the pyroconductivity at 30 DEG C of above-mentioned (4).Result is shown in table 2.
In addition to resulting powder, similarly to Example 1, obtain diameter 4cm, thickness 1cm, heap density and be
0.40g/cm3Formed body, evaluate above-mentioned (5) charging property.Result is shown in table 2.
In addition to resulting powder, it is similarly to Example 1, to vertical 30cm, horizontal 30cm, thickness 2cm, heap density
0.50g/cm3Formed body carry out 950 DEG C × 1 hour sinter, obtain thickness 1.8cm, heap density 0.62g/cm3It is sinter-hardened
Body.For the sinter-hardened body, the pyroconductivity at 30 DEG C of above-mentioned (4) and the compressive strength of above-mentioned (6) are evaluated.In table 2
Result is shown.
In addition to resulting powder, in order to obtain diameter 4cm, thickness 1.2cm, heap density similarly to Example 1
For 0.50g/cm3Formed body, in diameter 4cm mould fill 8g by powder obtained above, carry out press molding, obtain
Heap density is 0.50g/cm3, discoideus formed body.The formed body sinter within 950 DEG C × 1 hour, thickness is obtained
1.0cm, heap density 0.62g/cm3Sinter-hardened body.For the sinter-hardened body, the charging property of above-mentioned (5) is evaluated.In table 2
In result is shown.
Table 1
Table 2
Claims (8)
1. a kind of powder, it includes silica dioxide granule and inorfil, and the inorfil is relative to the inorfil
100 mass % are with Fe2O3Inorfil of the conversion comprising more than 1 mass % and below 40 mass % iron.
2. powder according to claim 1, wherein, the silica dioxide granule includes particle diameter DSFor more than 5nm and 30nm with
Under multiple little particles.
3. powder according to claim 1 or 2, it also includes infrared ray opacification particle.
4. according to powder according to any one of claims 1 to 3, it also includes alumina particle.
5. according to powder according to any one of claims 1 to 4, it is used for heat-insulating material.
6. a kind of formed body, it includes powder according to any one of claims 1 to 5.
7. formed body according to claim 6, wherein, the maximum load under more than 0% and less than 5% compression ratio is
More than 0.7MPa.
8. a kind of cladding, its overcoating material for possessing core and storing the core, the core includes Claims 1 to 5
Any one of powder and/or the formed body described in claim 6 or 7.
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| KR102163244B1 (en) | 2018-04-19 | 2020-10-12 | 주식회사 비츠로넥스텍 | Oxidation resistant coating composition and coating method using the same |
| CN108584968A (en) * | 2018-05-17 | 2018-09-28 | 曲阜师范大学 | A kind of amorphous silicic acid ferrisodium nanometer piece preparation method with selective absorption performance |
| CN112326705A (en) * | 2020-11-30 | 2021-02-05 | 天津海关化矿金属材料检测中心 | Qualitative identification method of basalt fibers |
| CN112326705B (en) * | 2020-11-30 | 2023-01-13 | 天津海关化矿金属材料检测中心 | Qualitative identification method of basalt fibers |
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