CN104944985B - High intensity low thermal conductivity fibrous ceramic insulation and preparation method thereof - Google Patents
High intensity low thermal conductivity fibrous ceramic insulation and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to a kind of high intensity low thermal conductivity fibrous ceramic insulation and preparation method thereof.Its technical scheme is：By titaniferous materials, mix containing magnesium raw material and bonding agent, shaping, grind after heat treatment, obtain the B material of A material and granularity of the granularity for 0.088 ~ 1mm less than 0.088mm；Potassium raw material, titaniferous materials and the bonding agent will be contained mix, shaping, grind after heat treatment, obtain C material of the granularity less than 0.088mm；The A material, the B material, the C material and the raw material containing potassium are mixed, is ground after heat treatment, obtain D material of the granularity for 0.088 ~ 1mm；Pretreatment ceramic fibre, the B material, the C material, the D material, the bonding agent and additive are mixed, add water stirring, injection mould, vacuum dehydration, dry, heat treatment, high intensity low thermal conductivity fibrous ceramic insulation is obtained.Low production cost of the present invention, made product volume density is low, High anti bending strength and Thermal Conductivity at High Temperature are low.
Description
Technical field
The invention belongs to fibrous ceramic insulation technical field.Specifically related to a kind of high intensity low thermal conductivity pottery is fine
Dimension heat-barrier material and preparation method thereof.
Background technology
Insulation is adiabatic, is to realize energy saving, ensure one of important measures of sustainable economic development.Hot industry send out
Exhibition, proposes requirements at the higher level to heat preserving and insulating material, such as efficient, energy-conservation, high-strength, low lead, waterproof etc..For this purpose, people exist always
Seek the hot industry novel heat insulation heat-barrier material with low thermal conductivity, high infrared reflection rate and microporous with research.
Ceramic fibre is a kind of fibrous light refractory material, and the heat preserving and insulating material being made from has high temperature resistant, hot
The advantages of good stability, low thermal conductivity, mechanical resistant shake, thus all obtain in machinery, the industry such as metallurgy, petrochemical industry, building materials, electronics
It is widely applied.
In prior art, " a kind of lower thermal conductivity heat-barrier material and preparation method thereof " (ZL200810138024.8) patent skill
Basalt fibre is first added to the water and stirs into slurry by art, the technology, adds crystal whisker of hexa potassium titanate, bonding agent and auxiliary agent, then
Floccule is ferreted out, shaping, dries, obtain the composite heat-insulated material of low heat conductivity.A kind of " nano-hole silica composite heat insulation material
And preparation method thereof " (ZL200810047741.X) patented technology, the technology with nano-hole silica powder, alumina silicate fibre, six
Potassium titanate crystal whisker, binder etc. are raw material, pre-process, discongest, being molded, drying through fiber and heat treatment step makes nano-pore
Silica composite heat insulation material." a kind of titanium ceramic thermal insulation material and its preparation method and application " (ZL201110063781.5) patent
Technology, the technology is with crystal whisker of hexa potassium titanate, glass bead, serpentine, short glass fiber, alumina silicate fibre, bentonite and glue
Glutinous agent etc. prepares titanium ceramic thermal insulation material for raw material.
Though above-mentioned technology respectively has clear advantage, but still suffers from the drawback that：(1) the organic additive that introduces, binder or
Bonding agent, under high temperature, charing, decomposition, are also easy to produce dense smoke and irritative gas, pollute environment；(2) the part material for introducing or interpolation
Agent fusing point is relatively low, and the low melting point liquid phase of generation exacerbates the contraction of ceramic fibre, reduces the service life of product；(3) intensity is relatively
Little, after the effect such as external stress, mechanical oscillation or airflow scouring, easily compress, deform, impact insulation liner body structure is stable
Property, reduction heat insulation effect；(4) potassium titanate crystal whisker, microballon etc. are introduced in the form of directly adding, in the material its point uncontrollable
Cloth form, can only be with the formal distribution of " being scattered " between ceramic fibre so that the insulation insulation effect of material is had a greatly reduced quality.
Content of the invention
It is contemplated that overcoming the deficiencies in the prior art, it is therefore an objective to provide a kind of high intensity of low production cost low heat conduction system
The preparation method of number fibrous ceramic insulation, the high intensity low thermal conductivity fibrous ceramic insulation body prepared with the method
Product density is low, High anti bending strength and Thermal Conductivity at High Temperature are low, the heat preservation and insulation field that can be used for for a long time within 1200 DEG C.
For achieving the above object, the comprising the concrete steps that of the technical solution used in the present invention：
The first step, will the titaniferous materials of 70 ~ 85wt%, 5 ~ 25wt% the bonding agent mixing containing magnesium raw material and 5 ~ 10wt% all
Even, compressing under the conditions of 50 ~ 100MPa, it is heat-treated 0.5 ~ 2 hour under the conditions of neutral atmosphere and 500 ~ 1000 DEG C, obtains
Heat treatment material I；Then the heat treatment is expected that I crushes, grinding, screening, obtain A material and granularity of the granularity for 0.088 ~ 1mm
B material less than 0.088mm.
Second step, by the combination of the raw material containing potassium of 20 ~ 40wt%, the titaniferous materials of 50 ~ 70wt% and 5 ~ 10wt%
Agent is mixed, compressing under the conditions of 50 ~ 100MPa, is heat-treated 0.5 ~ 2 under the conditions of neutral atmosphere and 800 ~ 1200 DEG C
Hour, natural cooling, obtain heat treatment material II；Then the heat treatment is expected that II crushes, grinding, screening, obtain granularity and be less than
The C material of 0.088mm.
3rd step, by the A material of 30 ~ 50wt%, the B material of 10 ~ 30wt%, 10 ~ 30wt% the C material
Mix with the raw material containing potassium of 5 ~ 10wt%, be heat-treated 0.5 ~ 2 hour under the conditions of neutral atmosphere and 800 ~ 1200 DEG C,
Natural cooling, obtains heat treatment material III；Then the heat treatment is expected III to crush, grinding, screening, obtain granularity for 0.088 ~
The D material of 1mm.
4th step, ceramic fibre is placed in concentration for 5 ~ 30wt% titanium-containing compound solution in, under the conditions of 50 ~ 90 DEG C
Stirring 0.5 ~ 3 hour, filters；Then dry 12 ~ 24 hours under the conditions of 70 ~ 110 DEG C, under the conditions of 400 ~ 800 DEG C, be heat-treated 2
~ 5 hours, obtain pre-processing ceramic fibre.
5th step, by the pretreatment ceramic fibre of 30 ~ 50wt%, the B material of 5 ~ 15wt%, 5 ~ 15wt% the C thing
Material, the D material of 5 ~ 15wt%, the bonding agent of 5 ~ 15wt% and the additive of 5 ~ 15wt% are mixed, and are added water and are stirred into
Slurry；Again the slurry is injected mould, vacuum dehydration, dry 12 ~ 24 hours under the conditions of 70 ~ 110 DEG C, then 800 ~
It is heat-treated 0.5 ~ 5 hour under the conditions of 1100 DEG C, natural cooling, high intensity low thermal conductivity fibrous ceramic insulation is obtained.
The titaniferous materials are titanium dioxide or are metatitanic acid that the granularity of the titaniferous materials is less than 0.088mm.
Described containing magnesium raw material be magnesium hydroxide, the one kind in magnesium carbonate, magnesium sulfate and magnesia, the granularity containing magnesium raw material
Less than 0.088mm.
The bonding agent for industrial dextrine powder or is powdered glucose.
The raw material containing potassium is in Anhydrous potassium carbonate, potassium sulfate, potassium chloride, potassium hydroxide, potassium nitrate and saleratus
One kind, the granularity containing potassium raw material are less than 0.088mm.
The neutral atmosphere is nitrogen atmosphere or is argon gas atmosphere.
The ceramic fibre is the one kind in alumina-silicate ceramic fibre, magnesium silicon ceramic fiber and calcium magnesium silicon ceramic fiber.
The titanium-containing compound is titanium trichloride or is titanyl sulfate.
The additive is the one kind in silicon powder, alumina powder and titanium dioxide.
Due to adopting technique scheme, the present invention has following good effect compared with prior art：
Raw material sources of the present invention are extensive, low production cost；By strict control atmosphere, granularity, shaping and
The operations such as heat treatment, not only improve the close contact and particulate material and fiber between various feed particles, are also magnesium titanate
Being formed in situ and growing up there is provided proportional space for potassium and potassium titanate crystal whisker, has modified interfibrous pore structure, thus in drop
While low bulk density and the raising strength of materials, also increase the high-temperature infrared reflectivity of material, reduce high-temperature heat-conductive system
Number.
High intensity low thermal conductivity fibrous ceramic insulation prepared by the present invention is after testing：Bulk density be 0.2 ~
0.35g/cm3；In the range of 200 ~ 1200 DEG C, thermal conductivity factor is 0.05 ~ 0.12W/ (m K)；Rupture strength is more than 0.6MPa.Can be long
Phase is for the heat preservation and insulation field within 1200 DEG C.
Thus, the low production cost of the present invention, prepared high intensity low thermal conductivity fibrous ceramic insulation have
The feature that bulk density is low, High anti bending strength and Thermal Conductivity at High Temperature are low.
Specific embodiment
With reference to specific embodiment, the invention will be further described, not the restriction to its protection domain.
For avoiding repeating, first will be as follows for the raw material granularity Unify legislation involved by this specific embodiment, in embodiment not
Repeat again：
The granularity of the titanium dioxide and metatitanic acid is less than 0.088mm.
The granularity of the magnesium hydroxide, magnesium carbonate, magnesium sulfate and magnesia is less than 0.088mm.
The granularity of the Anhydrous potassium carbonate, potassium sulfate, potassium chloride, potassium hydroxide, potassium nitrate and saleratus is less than
0.088mm.
Embodiment 1
A kind of high intensity low thermal conductivity fibrous ceramic insulation and preparation method thereof.Preparation method described in the present embodiment
Comprise the concrete steps that：
The first step, will the titanium dioxide of 70 ~ 80wt%, the magnesium hydroxide of 10 ~ 20wt% and 8 ~ 10wt% powdered glucose mixing all
Even, compressing under the conditions of 50 ~ 80MPa, it is heat-treated 0.5 ~ 1 hour under the conditions of nitrogen atmosphere and 800 ~ 1000 DEG C, obtains
Heat treatment material I；Then the heat treatment is expected that I crushes, grinding, screening, obtain A material and granularity of the granularity for 0.088 ~ 1mm
B material less than 0.088mm.
Second step, the powdered glucose of the Anhydrous potassium carbonate of 20 ~ 30wt%, the titanium dioxide of 60 ~ 70wt% and 8 ~ 10wt% is mixed
Uniformly, compressing under the conditions of 50 ~ 80MPa, it is heat-treated 1 ~ 2 hour under the conditions of argon gas atmosphere and 1000 ~ 1200 DEG C, natural
Cooling, obtains heat treatment material II；Then the heat treatment is expected that II crushes, grinding, screening, obtain C of the granularity less than 0.088mm
Material.
3rd step, by the A material of 30 ~ 40wt%, the B material of 20 ~ 30wt%, 20 ~ 30wt% the C material
Mix with the Anhydrous potassium carbonate of 8 ~ 10wt%, be heat-treated 0.5 ~ 1 hour under the conditions of nitrogen atmosphere and 800 ~ 1000 DEG C, from
So cool down, obtain heat treatment material III；Then the heat treatment is expected that III crushes, grinding, screening, granularity is obtained for 0.088 ~ 1mm
D material.
4th step, calcium magnesium silicon ceramic fiber is placed in concentration for 20 ~ 30wt% titanium trichloride solution in, in 50 ~ 90 DEG C of bars
Stir 0.5 ~ 1.5 hour under part, filter；Then dry 12 ~ 24 hours under the conditions of 70 ~ 110 DEG C, under the conditions of 600 ~ 800 DEG C
Heat treatment 2 ~ 5 hours, obtains pre-processing calcium magnesium silicon ceramic fiber.
5th step, by the pretreatment calcium magnesium silicon ceramic fiber of 30 ~ 40wt%, the B material of 10 ~ 15wt%, 10 ~ 15wt%
The C material, the D material, the industrial dextrine powder of 10 ~ 15wt% and 5 ~ 10wt% of 10 ~ 15wt% titanium dioxide mixing all
Even, add water and stir into slurry；Again by slurry injection mould, vacuum dehydration, 12 ~ 24 are dried under the conditions of 70 ~ 110 DEG C little
When, then it is heat-treated 0.5 ~ 2 hour under the conditions of 800 ~ 1000 DEG C, natural cooling, high intensity low thermal conductivity pottery is obtained fine
Dimension heat-barrier material.
Embodiment 2
A kind of high intensity low thermal conductivity fibrous ceramic insulation and preparation method thereof.Preparation method described in the present embodiment
Comprise the concrete steps that：
The first step, will the metatitanic acid of 80 ~ 85wt%, the magnesium carbonate of 10 ~ 15wt% and 5 ~ 8wt% the mixing of industrial dextrine powder all
Even, compressing under the conditions of 80 ~ 100MPa, it is heat-treated 1 ~ 2 hour under the conditions of argon gas atmosphere and 500 ~ 800 DEG C, obtains heat
Process material I；Then the heat treatment is expected I to crush, grinding, screening, it is that the A material of 0.088 ~ 1mm and granularity are little to obtain granularity
B material in 0.088mm.
Second step, will the potassium sulfate of 30 ~ 40wt%, the metatitanic acid of 50 ~ 60wt% and 8 ~ 10wt% powdered glucose mixing all
Even, compressing under the conditions of 80 ~ 100MPa, it is heat-treated 0.5 ~ 1 hour under the conditions of nitrogen atmosphere and 800 ~ 1000 DEG C, natural
Cooling, obtains heat treatment material II；Then the heat treatment is expected that II crushes, grinding, screening, obtain C of the granularity less than 0.088mm
Material.
3rd step, by the A material of 40 ~ 50wt%, the B material of 20 ~ 30wt%, 10 ~ 20wt% the C material
Mix with the potassium sulfate of 8 ~ 10wt%, be heat-treated 1 ~ 2 hour under the conditions of argon gas atmosphere and 1000 ~ 1200 DEG C, naturally cold
But, heat treatment material III is obtained；Then the heat treatment is expected that III crushes, grinding, screening, obtain D thing of the granularity for 0.088 ~ 1mm
Material.
4th step, alumina-silicate ceramic fibre is placed in concentration for 10 ~ 20wt% titanyl sulfate solution in, in 50 ~ 90 DEG C of bars
Stir 1 ~ 3 hour under part, filter；Then dry 12 ~ 24 hours under the conditions of 70 ~ 110 DEG C, at heat under the conditions of 400 ~ 600 DEG C
Reason 2 ~ 5 hours, obtains pre-processing alumina-silicate ceramic fibre.
5th step, by the pretreatment alumina-silicate ceramic fibre of 40 ~ 50wt%, the B material of 5 ~ 10wt%, 5 ~ 10wt%
The C material, the alumina powder of the D material, the industrial dextrine powder of 10 ~ 15wt% and 10 ~ 15wt% of 5 ~ 10wt% mix all
Even, add water and stir into slurry；Again by slurry injection mould, vacuum dehydration, 12 ~ 24 are dried under the conditions of 70 ~ 110 DEG C little
When, then it is heat-treated 2 ~ 4 hours under the conditions of 800 ~ 1000 DEG C, natural cooling, high intensity low thermal conductivity ceramic fibre is obtained
Heat-barrier material.
Embodiment 3
A kind of high intensity low thermal conductivity fibrous ceramic insulation and preparation method thereof.Preparation method described in the present embodiment
Comprise the concrete steps that：
The first step, the powdered glucose of the metatitanic acid of 80 ~ 85wt%, the magnesium sulfate of 5 ~ 10wt% and 8 ~ 10wt% is mixed,
Compressing under the conditions of 50 ~ 80MPa, it is heat-treated 1 ~ 2 hour under the conditions of argon gas atmosphere and 500 ~ 800 DEG C, is heat-treated
Material I；Then the heat treatment is expected I to crush, grinding, screening, it is that the A material of 0.088 ~ 1mm and granularity are less than to obtain granularity
The B material of 0.088mm.
Second step, will the potassium chloride of 25 ~ 35wt%, the metatitanic acid of 60 ~ 70wt% and 5 ~ 8wt% the mixing of industrial dextrine powder all
Even, compressing under the conditions of 50 ~ 80MPa, it is heat-treated 1 ~ 2 hour under the conditions of argon gas atmosphere and 800 ~ 1000 DEG C, naturally cold
But, heat treatment material II is obtained；Then the heat treatment is expected that II crushes, grinding, screening, obtain C thing of the granularity less than 0.088mm
Material.
3rd step, by the A material of 40 ~ 50wt%, the B material of 10 ~ 20wt%, 20 ~ 30wt% the C material
Mix with the potassium chloride of 8 ~ 10wt%, be heat-treated 0.5 ~ 1 hour under the conditions of nitrogen atmosphere and 800 ~ 1000 DEG C, naturally cold
But, heat treatment material III is obtained；Then the heat treatment is expected that III crushes, grinding, screening, obtain D thing of the granularity for 0.088 ~ 1mm
Material.
4th step, calcium magnesium silicon ceramic fiber is placed in concentration for 5 ~ 10wt% titanyl sulfate solution in, in 50 ~ 90 DEG C of bars
Stir 0.5 ~ 1.5 hour under part, filter；Then dry 12 ~ 24 hours under the conditions of 70 ~ 110 DEG C, under the conditions of 600 ~ 800 DEG C
Heat treatment 2 ~ 5 hours, obtains pre-processing calcium magnesium silicon ceramic fiber.
5th step, by the pretreatment calcium magnesium silicon ceramic fiber of 40 ~ 50wt%, the B material of 5 ~ 10wt%, 5 ~ 10wt%
The C material, the D material of 5 ~ 10wt%, the powdered glucose of 10 ~ 15wt% and the silicon powder of 10 ~ 15wt% are mixed, plus
Water stirs into slurry；Again the slurry is injected mould, vacuum dehydration, dry 12 ~ 24 hours under the conditions of 70 ~ 110 DEG C, then
It is heat-treated 3 ~ 5 hours under the conditions of 900 ~ 1100 DEG C, natural cooling, the heat-insulated material of high intensity low thermal conductivity ceramic fibre is obtained
Material.
Embodiment 4
A kind of high intensity low thermal conductivity fibrous ceramic insulation and preparation method thereof.Preparation method described in the present embodiment
Comprise the concrete steps that：
The first step, the powdered glucose of the titanium dioxide of 70 ~ 75wt%, the magnesia of 20 ~ 25wt% and 5 ~ 8wt% is mixed,
Compressing under the conditions of 50 ~ 80MPa, it is heat-treated 0.5 ~ 1 hour under the conditions of nitrogen atmosphere and 800 ~ 1000 DEG C, is heat-treated
Material I；Then the heat treatment is expected I to crush, grinding, screening, it is that the A material of 0.088 ~ 1mm and granularity are less than to obtain granularity
The B material of 0.088mm.
Second step, the industrial dextrine powder of the potassium hydroxide of 25 ~ 35wt%, the titanium dioxide of 60 ~ 70wt% and 5 ~ 8wt% is mixed
Uniformly, compressing under the conditions of 50 ~ 80MPa, it is heat-treated 1 ~ 2 hour under the conditions of argon gas atmosphere and 800 ~ 1000 DEG C, natural
Cooling, obtains heat treatment material II；Then the heat treatment is expected that II crushes, grinding, screening, obtain C of the granularity less than 0.088mm
Material.
3rd step, by the A material of 40 ~ 50wt%, the B material of 20 ~ 30wt%, 20 ~ 30wt% the C material
Mix with the potassium hydroxide of 5 ~ 8wt%, be heat-treated 0.5 ~ 1 hour under the conditions of nitrogen atmosphere and 1000 ~ 1200 DEG C, natural
Cooling, obtains heat treatment material III；Then the heat treatment is expected that III crushes, grinding, screening, obtain D of the granularity for 0.088 ~ 1mm
Material.
4th step, magnesium silicon ceramic fiber is placed in concentration for 20 ~ 30wt% titanium trichloride solution in, in 50 ~ 90 DEG C of conditions
Lower stirring 1 ~ 3 hour, filters；Then dry 12 ~ 24 hours under the conditions of 70 ~ 110 DEG C, under the conditions of 400 ~ 600 DEG C, be heat-treated 2
~ 5 hours, obtain pre-processing magnesium silicon ceramic fiber.
5th step, by the pretreatment magnesium silicon ceramic fiber of 30 ~ 40wt%, the B material of 10 ~ 15wt%, 10 ~ 15wt%
The C material, the alumina powder of the D material, the powdered glucose of 5 ~ 10wt% and 10 ~ 15wt% of 10 ~ 15wt% mix all
Even, add water and stir into slurry；Again by slurry injection mould, vacuum dehydration, 12 ~ 24 are dried under the conditions of 70 ~ 110 DEG C little
When, then it is heat-treated 0.5 ~ 2 hour under the conditions of 900 ~ 1100 DEG C, natural cooling, high intensity low thermal conductivity pottery is obtained fine
Dimension heat-barrier material.
Embodiment 5
A kind of high intensity low thermal conductivity fibrous ceramic insulation and preparation method thereof.Preparation method described in the present embodiment
Comprise the concrete steps that：
The first step, the powdered glucose of the metatitanic acid of 80 ~ 85wt%, the magnesium sulfate of 5 ~ 10wt% and 8 ~ 10wt% is mixed,
Compressing under the conditions of 50 ~ 80MPa, it is heat-treated 1 ~ 2 hour under the conditions of argon gas atmosphere and 500 ~ 800 DEG C, is heat-treated
Material I；Then the heat treatment is expected I to crush, grinding, screening, it is that the A material of 0.088 ~ 1mm and granularity are less than to obtain granularity
The B material of 0.088mm.
Second step, will the potassium nitrate of 30 ~ 40wt%, the titanium dioxide of 50 ~ 60wt% and 8 ~ 10wt% the mixing of industrial dextrine powder all
Even, compressing under the conditions of 80 ~ 100MPa, it is heat-treated 0.5 ~ 1 hour under the conditions of nitrogen atmosphere and 800 ~ 1000 DEG C, natural
Cooling, obtains heat treatment material II；Then the heat treatment is expected that II crushes, grinding, screening, obtain C of the granularity less than 0.088mm
Material.
3rd step, by the A material of 30 ~ 40wt%, the B material of 20 ~ 30wt%, 20 ~ 30wt% the C material
Mix with the potassium nitrate of 8 ~ 10wt%, be heat-treated 1 ~ 2 hour under the conditions of argon gas atmosphere and 800 ~ 1000 DEG C, natural cooling,
Obtain heat treatment material III；Then the heat treatment is expected that III crushes, grinding, screening, obtain D material of the granularity for 0.088 ~ 1mm.
4th step, magnesium silicon ceramic fiber is placed in concentration for 10 ~ 20wt% titanium trichloride solution in, in 50 ~ 90 DEG C of conditions
Lower stirring 0.5 ~ 1.5 hour, filters；Then dry 12 ~ 24 hours under the conditions of 70 ~ 110 DEG C, hot under the conditions of 600 ~ 800 DEG C
Process 2 ~ 5 hours, obtain pre-processing magnesium silicon ceramic fiber.
5th step, by the pretreatment magnesium silicon ceramic fiber of 40 ~ 50wt%, the B material of 5 ~ 10wt%, 5 ~ 10wt% institute
State C material, the D material of 5 ~ 10wt%, the industrial dextrine powder of 10 ~ 15wt% and the titanium dioxide of 10 ~ 15wt% to mix, plus
Water stirs into slurry；Again the slurry is injected mould, vacuum dehydration, dry 12 ~ 24 hours under the conditions of 70 ~ 110 DEG C, then
It is heat-treated 2 ~ 4 hours under the conditions of 800 ~ 1000 DEG C, natural cooling, the heat-insulated material of high intensity low thermal conductivity ceramic fibre is obtained
Material.
Embodiment 6
A kind of high intensity low thermal conductivity fibrous ceramic insulation and preparation method thereof.Preparation method described in the present embodiment
Comprise the concrete steps that：
The first step, will the metatitanic acid of 70 ~ 80wt%, the magnesia of 10 ~ 20wt% and 8 ~ 10wt% the mixing of industrial dextrine powder all
Even, compressing under the conditions of 50 ~ 80MPa, it is heat-treated 0.5 ~ 1 hour under the conditions of nitrogen atmosphere and 800 ~ 1000 DEG C, obtains
Heat treatment material I；Then the heat treatment is expected that I crushes, grinding, screening, obtain A material and granularity of the granularity for 0.088 ~ 1mm
B material less than 0.088mm.
Second step, will the saleratus of 20 ~ 30wt%, the metatitanic acid of 60 ~ 70wt% and 8 ~ 10wt% powdered glucose mixing all
Even, compressing under the conditions of 50 ~ 80MPa, it is heat-treated 1 ~ 2 hour under the conditions of argon gas atmosphere and 1000 ~ 1200 DEG C, naturally cold
But, heat treatment material II is obtained；Then the heat treatment is expected that II crushes, grinding, screening, obtain C thing of the granularity less than 0.088mm
Material.
3rd step, by the A material of 40 ~ 50wt%, the B material of 10 ~ 20wt%, 20 ~ 30wt% the C material
Mix with the saleratus of 8 ~ 10wt%, be heat-treated 0.5 ~ 1 hour under the conditions of nitrogen atmosphere and 1000 ~ 1200 DEG C, natural
Cooling, obtains heat treatment material III；Then the heat treatment is expected that III crushes, grinding, screening, obtain D of the granularity for 0.088 ~ 1mm
Material.
4th step, calcium magnesium silicon ceramic fiber is placed in concentration for 5 ~ 10wt% titanium trichloride solution in, in 50 ~ 90 DEG C of bars
Stir 1 ~ 3 hour under part, filter；Then dry 12 ~ 24 hours under the conditions of 70 ~ 110 DEG C, at heat under the conditions of 400 ~ 600 DEG C
Reason 2 ~ 5 hours, obtains pre-processing calcium magnesium silicon ceramic fiber.
5th step, by the pretreatment calcium magnesium silicon ceramic fiber of 30 ~ 40wt%, the B material of 10 ~ 15wt%, 10 ~ 15wt%
The C material, the D material of 10 ~ 15wt%, the powdered glucose of 10 ~ 15wt% and the silicon powder of 5 ~ 10wt% mix,
Add water and stir into slurry；Again the slurry is injected mould, vacuum dehydration, dry 12 ~ 24 hours under the conditions of 70 ~ 110 DEG C, so
It is heat-treated 3 ~ 5 hours under the conditions of 900 ~ 1100 DEG C afterwards, natural cooling, the heat-insulated material of high intensity low thermal conductivity ceramic fibre is obtained
Material.
This specific embodiment has following good effect compared with prior art：
The raw material sources adopted by this specific embodiment are extensive, low production cost；By strict control atmosphere, grain
The operations such as degree, shaping and heat treatment, not only improve the close contact and particulate material and fiber between various feed particles,
Being formed in situ and grow up there is provided proportional space for magnesium titanate potassium and potassium titanate crystal whisker, has modified interfibrous pore structure,
Thus while reducing bulk density and improving the strength of materials, also increase the high-temperature infrared reflectivity of material, reduce height
Warm thermal conductivity factor.
High intensity low thermal conductivity fibrous ceramic insulation prepared by this specific embodiment is after testing：Bulk density is
0.2~0.35g/cm3；In the range of 200 ~ 1200 DEG C, thermal conductivity factor is 0.05 ~ 0.12W/ (m K)；Rupture strength is more than 0.6MPa.
The heat preservation and insulation field that can be used for for a long time within 1200 DEG C.
Thus, the low production cost of this specific embodiment, prepared high intensity low thermal conductivity ceramic fibre are heat-insulated
Material has the characteristics that bulk density is low, High anti bending strength and Thermal Conductivity at High Temperature are low.
Claims (10)
1. a kind of preparation method of high intensity low thermal conductivity fibrous ceramic insulation, it is characterised in that the preparation method
Comprise the concrete steps that：
The first step, the bonding agent containing magnesium raw material and 5 ~ 10wt% of the titaniferous materials of 70 ~ 85wt%, 5 ~ 25wt% is mixed,
Compressing under the conditions of 50 ~ 100MPa, it is heat-treated 0.5 ~ 2 hour under the conditions of neutral atmosphere and 500 ~ 1000 DEG C, obtains hot place
Reason material I；Then the heat treatment is expected I to crush, grinding, screening, it is that the A material of 0.088 ~ 1mm and granularity are less than to obtain granularity
The B material of 0.088mm；
Second step, will be mixed for the bonding agent of the raw material containing potassium of 20 ~ 40wt%, the titaniferous materials of 50 ~ 70wt% and 5 ~ 10wt%
Uniform, compressing under the conditions of 50 ~ 100MPa, heat treatment 0.5 ~ 2 hour under the conditions of neutral atmosphere and 800 ~ 1200 DEG C is closed,
Natural cooling, obtains heat treatment material II；Then the heat treatment is expected that II crushes, grinding, screening, obtain granularity and be less than
The C material of 0.088mm；
3rd step, by the A material of 30 ~ 50wt%, the B material of 10 ~ 30wt%, the C material of 10 ~ 30wt% and 5 ~
The raw material containing potassium of 10wt% is mixed, and is heat-treated 0.5 ~ 2 hour under the conditions of neutral atmosphere and 800 ~ 1200 DEG C, natural
Cooling, obtains heat treatment material III；Then the heat treatment is expected that III crushes, grinding, screening, obtain D of the granularity for 0.088 ~ 1mm
Material；
4th step, ceramic fibre is placed in concentration for, in the titanium-containing compound solution of 5 ~ 30wt%, stirring under the conditions of 50 ~ 90 DEG C
0.5 ~ 3 hour, filter；Then dry 12 ~ 24 hours under the conditions of 70 ~ 110 DEG C, 2 ~ 5 are heat-treated under the conditions of 400 ~ 800 DEG C little
When, obtain pre-processing ceramic fibre；
5th step, by the pretreatment ceramic fibre of 30 ~ 50wt%, the B material of 5 ~ 15wt%, the C material of 5 ~ 15wt%, 5
The D material of ~ 15wt%, the bonding agent of 5 ~ 15wt% and the additive of 5 ~ 15wt% are mixed, and are added water and are stirred into slurry
Material；Again by slurry injection mould, vacuum dehydration, dry 12 ~ 24 hours under the conditions of 70 ~ 110 DEG C, then 800 ~ 1100
It is heat-treated 0.5 ~ 5 hour under the conditions of DEG C, natural cooling, high intensity low thermal conductivity fibrous ceramic insulation is obtained.
2. the preparation method of high intensity low thermal conductivity fibrous ceramic insulation according to claim 1, it is characterised in that
The titaniferous materials are titanium dioxide or are metatitanic acid that the granularity of the titaniferous materials is less than 0.088mm.
3. the preparation method of high intensity low thermal conductivity fibrous ceramic insulation according to claim 1, it is characterised in that
Described containing magnesium raw material be magnesium hydroxide, the one kind in magnesium carbonate, magnesium sulfate and magnesia, the granularity containing magnesium raw material is less than
0.088mm.
4. the preparation method of high intensity low thermal conductivity fibrous ceramic insulation according to claim 1, it is characterised in that
The bonding agent for industrial dextrine powder or is powdered glucose.
5. the preparation method of high intensity low thermal conductivity fibrous ceramic insulation according to claim 1, it is characterised in that
The raw material containing potassium is the one kind in Anhydrous potassium carbonate, potassium sulfate, potassium chloride, potassium hydroxide, potassium nitrate and saleratus, described
Granularity containing potassium raw material is less than 0.088mm.
6. the preparation method of high intensity low thermal conductivity fibrous ceramic insulation according to claim 1, it is characterised in that
The neutral atmosphere is nitrogen atmosphere or is argon gas atmosphere.
7. the preparation method of high intensity low thermal conductivity fibrous ceramic insulation according to claim 1, it is characterised in that
The ceramic fibre is the one kind in alumina-silicate ceramic fibre, magnesium silicon ceramic fiber and calcium magnesium silicon ceramic fiber.
8. the preparation method of high intensity low thermal conductivity fibrous ceramic insulation according to claim 1, it is characterised in that
The titanium-containing compound is titanium trichloride or is titanyl sulfate.
9. the preparation method of high intensity low thermal conductivity fibrous ceramic insulation according to claim 1, it is characterised in that
The additive is the one kind in silicon powder, alumina powder and titanium dioxide.
10. a kind of high intensity low thermal conductivity fibrous ceramic insulation, it is characterised in that the high intensity low thermal conductivity pottery
Porcelain fibrous insulating material is high intensity low thermal conductivity fibrous ceramic insulation according to any one of claim 1 ~ 9
Preparation method prepared by high intensity low thermal conductivity fibrous ceramic insulation.
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| CN106220210B (en) * | 2016-07-22 | 2018-10-09 | 武汉科技大学 | Fibrous ceramic insulation and preparation method thereof based on polyaluminium chloride waste residue |
| TWI621512B (en) * | 2017-05-09 | 2018-04-21 | Zeng Yuan Sheng | Method for manufacturing grass and wood fiber board |
| CN107032827A (en) * | 2017-06-01 | 2017-08-11 | 合肥金同维低温科技有限公司 | A kind of fast refrigerating cabinet low heat conductivity heat-insulating material |
| CN107056312B (en) * | 2017-06-05 | 2019-10-11 | 武汉科技大学 | It is a kind of siliceous moldable and preparation method thereof |
| CN107739168B (en) * | 2017-11-29 | 2020-08-14 | 山东建筑大学 | Flame-retardant thermal-insulation material containing expanded vermiculite with low thermal conductivity coefficient and preparation method thereof |
| CN107986733B (en) * | 2017-11-29 | 2020-07-28 | 山东建筑大学 | Flame-retardant heat-insulating material containing ceramic fiber modified expanded vermiculite and preparation method thereof |
| CN111276734B (en) * | 2018-12-05 | 2021-10-26 | 新奥科技发展有限公司 | Solid electrolyte conducting potassium ions, preparation method and potassium solid battery |
| CN109437845B (en) * | 2018-12-25 | 2021-06-01 | 佛山科学技术学院 | Antiskid wear-resistant ceramic and preparation method thereof |
| CN111960833A (en) * | 2020-08-26 | 2020-11-20 | 廊坊森德科技有限公司 | Environment-friendly dry type vibration bonding agent |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2007014562A1 (en) * | 2005-08-03 | 2007-02-08 | Technische Universität Bergakademie Freiberg | Ceramic material resistant to thermal shocks and corrosion, process for producing the same and its use |
| CN101041770A (en) * | 2007-03-08 | 2007-09-26 | 中国人民解放军国防科学技术大学 | High-temperature resistant aluminium oxide aerogel heat-proof composite material and method for making same |
| CN101625065A (en) * | 2009-08-17 | 2010-01-13 | 武汉阜成科技有限公司 | High temperature resistance multilayer heat insulating composite material and manufacturing method thereof |
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| CN101213156B (en) * | 2005-05-31 | 2014-07-16 | 康宁股份有限公司 | Aluminum titanate ceramic forming batch mixtures and green bodies including pore former combinations and methods of manufacturing and firing same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2007014562A1 (en) * | 2005-08-03 | 2007-02-08 | Technische Universität Bergakademie Freiberg | Ceramic material resistant to thermal shocks and corrosion, process for producing the same and its use |
| CN101041770A (en) * | 2007-03-08 | 2007-09-26 | 中国人民解放军国防科学技术大学 | High-temperature resistant aluminium oxide aerogel heat-proof composite material and method for making same |
| CN101625065A (en) * | 2009-08-17 | 2010-01-13 | 武汉阜成科技有限公司 | High temperature resistance multilayer heat insulating composite material and manufacturing method thereof |
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