CN111574176A - Nano ceramic composite heat-insulating material and preparation method thereof - Google Patents
Nano ceramic composite heat-insulating material and preparation method thereof Download PDFInfo
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- CN111574176A CN111574176A CN202010444108.5A CN202010444108A CN111574176A CN 111574176 A CN111574176 A CN 111574176A CN 202010444108 A CN202010444108 A CN 202010444108A CN 111574176 A CN111574176 A CN 111574176A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
- C04B2111/00508—Cement paints
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
- C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a nano ceramic composite heat-insulating material which comprises the following components in parts by weight: 25-40 parts of waste fiber cotton, 10-35 parts of nano zirconia, 20-40 parts of nano yttrium oxide, 30-50 parts of sepiolite wool, 10-15 parts of rapid penetrant T, 20-30 parts of attapulgite hydrosol, 10-20 parts of silica hydrosol, 80-110 parts of vitrified micro-beads, 5-10 parts of floating beads, 10-20 parts of expanded perlite and 620 parts of water 380-. The composite heat-insulating material is prepared by recycling the waste fiber cotton, the obtained composite material is vitrified in the surface of high-temperature flame without scattering and falling, and the composite material serving as a protective layer has the effects of no cracking due to thermal expansion and cold contraction, no sinking and no sagging under the action of vibration and gravity; according to the invention, the nano zirconia and the nano yttrium oxide are added, and the ceramic microparticles can be filled in gaps of the cellucotton, so that the impact resistance of the composite material is improved; the sepiolite fibers added in the composite material can be mutually entangled with the fiber surface, so that the tensile strength and the impact resistance of the composite material are improved.
Description
Technical Field
The invention relates to a heat insulation composite material, in particular to a nano ceramic composite heat insulation material and a preparation method thereof.
Background
The protective sleeve of the pipeline generally comprises a soft protective layer and an outer sheath, the soft protective layer and the outer sheath are bonded by a composite material coating, aluminum silicate cotton or asbestos adopted in the materials of the currently generally adopted composite material coating is new, the environmental protection is not facilitated, the cost is higher, and the problems of powder falling and slag falling after drying and forming, low high temperature resistance coefficient and complex materials exist in the existing composite material coating.
Patent CN107602053 discloses a nano silicon-based composite adiabatic coating and a preparation method thereof, wherein the coating with certain heat-insulating property is prepared by adopting components such as waste fiber cotton, attapulgite hydrosol, silica hydrosol, vitrified micro-beads, floating beads and expanded perlite, but the coating is only simple composite of the components, so that the comprehensive strength of the coating has certain defects.
Disclosure of Invention
The invention provides a nano ceramic composite heat-insulating material and a preparation method thereof, aiming at the problem of poor comprehensive strength of the existing heat-insulating material.
The technical scheme for solving the technical problems is as follows: a nano ceramic composite heat-insulating material comprises the following components in parts by weight: 25-40 parts of waste fiber cotton, 10-35 parts of nano zirconia, 20-40 parts of nano yttrium oxide, 30-50 parts of sepiolite wool, 78-15 parts of rapid penetrant T10, 20-30 parts of attapulgite hydrosol, 10-20 parts of silica hydrosol, 80-110 parts of vitrified micro-beads, 5-10 parts of floating beads, 10-20 parts of expanded perlite and 620 parts of water 380-;
wherein the waste cellucotton is any one or a composition of any two or three of waste high-silicon-oxygen-content cotton, waste glass cellucotton and waste ceramic cellucotton; the attapulgite hydrosol has a mass concentration of more than 40% and is prepared by dispersing ultrafine attapulgite with a fineness of more than 800 meshes by an ultrahigh-speed dispersion machine; the silica hydrosol with mass concentration higher than 50% is prepared by dispersing 20-60 nm nanometer silica in a superhigh speed disperser.
The preparation method of the nano ceramic composite heat-insulating material comprises the following steps:
1) treatment of waste cellucotton
Shearing and carding the waste cellucotton by a shearing carding machine, removing impurities, and purifying, fluffing and feathering fibers;
2) preparation of hydrosols
Dispersing the superfine attapulgite into high-concentration hydrosol by using an ultrahigh-speed dispersion machine at the revolution of more than 8000 rpm, and dispersing the nano silicon dioxide into the high-concentration hydrosol at the revolution of more than 30000 rpm;
3) preparation of composite materials
Preliminarily mixing the waste fiber cotton carded in the step 1) and sepiolite wool, putting the mixture into water, adding a rapid penetrating agent T, stirring for 15-30min to form pulp, then adding attapulgite hydrosol, stirring for 5-10min at the same rotation speed, adding 10-20 parts of silicon dioxide hydrosol, stirring for 5-15min at the same rotation speed, finally adding residual water, nano zirconium oxide, nano yttrium oxide, vitrified micro bubbles, floating beads and expanded perlite, stirring for 15-30min at the same rotation speed, spraying, drying and forming to obtain the composite material.
The invention has the beneficial effects that:
1. the composite heat-insulating material is prepared by recycling the waste fiber cotton, the obtained composite material is vitrified in the surface of high-temperature flame without scattering and falling, and the composite material serving as a protective layer has the effects of no cracking due to thermal expansion and cold contraction, no sinking and no sagging under the action of vibration and gravity;
2. according to the invention, the nano zirconia and the nano yttrium oxide are added, and the ceramic microparticles can be filled in gaps of the cellucotton, so that the impact resistance of the composite material is improved;
3. the sepiolite fibers added in the composite material can be mutually entangled with the fiber surface, so that the tensile strength and the impact resistance of the composite material are improved.
Detailed Description
The present invention is described below with reference to examples, which are provided for illustration only and are not intended to limit the scope of the present invention.
Example 1
A nano ceramic composite heat-insulating material comprises the following components in parts by weight: 25kg of waste high-silicon-oxygen-content cotton, 10kg of rapid penetrant T10kg, 10kg of nano zirconia, 20kg of nano yttrium oxide, 30kg of sepiolite wool, 20kg of attapulgite hydrosol, 10kg of silicon dioxide hydrosol, 80kg of vitrified micro bubbles, 5kg of floating beads, 10kg of expanded perlite and 380kg of water.
The preparation method of the nano ceramic composite heat-insulating material comprises the following steps:
firstly, treating waste cellucotton: shearing and carding the waste high silicon cotton by a shearing carding machine to remove impurities, so that the fibers are purified, fluffy and feathered;
secondly, preparing attapulgite hydrosol: dispersing the superfine attapulgite into 45 wt% high concentration hydrosol by an ultra-high speed disperser with the revolution over 8000 rpm;
thirdly, preparing the silica hydrosol: dispersing the nano silicon dioxide into 55 wt% high concentration hydrosol by using an ultra-high speed dispersion machine with the revolution over 30000 r/min;
fourthly, preparing the composite material: preliminarily mixing the waste fiber cotton carded in the step 1) and sepiolite wool, putting the mixture into water, adding a rapid penetrating agent T, stirring for 30min to form pulp, then adding attapulgite hydrosol, stirring for 10min at the same rotation speed, adding 10-20 parts of silicon dioxide hydrosol, stirring for 15min at the same rotation speed, finally adding residual water, nano zirconium oxide, nano yttrium oxide, vitrified micro bubbles, floating beads and expanded perlite, stirring for 30min at the same rotation speed, spraying, drying and forming to obtain the composite material.
Example 2
A nano ceramic composite heat-insulating material comprises the following components in parts by weight: 40kg of waste glass fiber cotton, 35kg of nano zirconia, 40kg of nano yttrium oxide, 50kg of sepiolite wool, T15kg of a rapid penetrating agent, 30kg of attapulgite hydrosol, 20kg of silicon dioxide hydrosol, 110kg of vitrified micro-beads, 10kg of floating beads, 20kg of expanded perlite and 620kg of water.
The preparation method of the nano ceramic composite heat-insulating material comprises the following steps:
firstly, treating waste cellucotton: shearing and carding the waste glass fiber cotton by a shearing carding machine, removing impurities, and purifying, fluffing and feathering fibers;
secondly, preparing attapulgite hydrosol: dispersing the superfine attapulgite into 48 wt% high concentration hydrosol by an ultra-high speed disperser with the revolution over 8000 rpm;
thirdly, preparing the silica hydrosol: dispersing the nano silicon dioxide into 57 wt% high concentration hydrosol by using an ultra-high speed dispersion machine with the revolution over 30000 r/min;
fourthly, preparing the composite material: preliminarily mixing the waste glass fiber cotton carded in the step 1) and sepiolite wool, putting the mixture into water, adding a rapid penetrating agent T, stirring for 15min to form pulp, then adding attapulgite hydrosol, stirring for 5min at the same rotation speed, adding 10-20 parts of silicon dioxide hydrosol, stirring for 5min at the same rotation speed, finally adding residual water, nano zirconium oxide, nano yttrium oxide, vitrified micro bubbles, floating beads and expanded perlite, stirring for 15min at the same rotation speed, spraying, drying and forming to obtain the composite material.
Example 3
A nano ceramic composite heat-insulating material comprises the following components in parts by weight: 32.5kg of waste ceramic fiber cotton, 22.5kg of nano zirconia, 30kg of nano yttrium oxide, 40kg of sepiolite wool, 12.5kg of rapid penetrating agent T12, 25kg of attapulgite hydrosol, 15kg of silicon dioxide hydrosol, 95kg of vitrified micro bubbles, 7.5kg of floating beads, 15kg of expanded perlite and 500kg of water.
The preparation method of the nano ceramic composite heat-insulating material comprises the following steps:
firstly, treating waste cellucotton: shearing and carding the waste ceramic fiber cotton by a shearing carding machine to remove impurities, so that the fibers are purified, fluffy and feathered;
secondly, preparing attapulgite hydrosol: dispersing the superfine attapulgite into 50 wt% high concentration hydrosol by an ultra-high speed disperser with the revolution over 8000 rpm;
thirdly, preparing the silica hydrosol: dispersing the nano silicon dioxide into 60 wt% high concentration hydrosol by using a super high speed dispersion machine with the revolution over 30000 r/min;
fourthly, preparing the composite material: preliminarily mixing the waste ceramic fiber cotton carded in the step 1) and sepiolite wool, putting the mixture into water, adding a rapid penetrating agent T, stirring for 20min to form pulp, then adding attapulgite hydrosol, stirring for 8min at the same rotation speed, adding 10-20 parts of silicon dioxide hydrosol, stirring for 8min at the same rotation speed, finally adding residual water, nano zirconium oxide, nano yttrium oxide, vitrified micro bubbles, floating beads and expanded perlite, stirring for 20min at the same rotation speed, spraying, drying and forming to obtain the composite material.
The nano ceramic composite heat-insulating material obtained in example 1 was subjected to building industry related tests, the unit of the tests was national building materials industry heat preservation and sealing material product quality supervision and inspection test center, and the results are shown in table 1.
TABLE 1. test results of example 1 industry
Note: the detection bases are GB/T17371-.
Comparative examples 1-3 composite materials were prepared as in examples 1-3, except that the nano zirconia, nano yttria and sepiolite wool were removed. The composites obtained in examples 2 and 3 and comparative examples 1 to 3 were subjected to the relevant property tests according to the criteria of table 1, and the results are shown in tables 2 and 3.
TABLE 2 Heat insulation Properties
TABLE 3 mechanical Properties
| Tensile strength/kPa | Tensile strength (600 ℃ C.)/kPa | Bond Strength/kPa | Impact strength (KJ/m2) | |
| Example 1 | 113 | 64 | 35 | 107 |
| Comparative example 1 | 85 | 21 | 24 | 78 |
| Example 2 | 121 | 72 | 33 | 98 |
| Comparative example 2 | 92 | 27 | 22 | 69 |
| Example 3 | 107 | 59 | 29 | 110 |
| Comparative example 3 | 81 | 18 | 17 | 82 |
Note: the execution standard of the impact strength is GB/T15231.5-1994.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (2)
1. The nano ceramic composite heat-insulating material is characterized by comprising the following components in parts by weight: 25-40 parts of waste fiber cotton, 10-35 parts of nano zirconia, 20-40 parts of nano yttrium oxide, 30-50 parts of sepiolite wool, 78-15 parts of rapid penetrant T10, 20-30 parts of attapulgite hydrosol, 10-20 parts of silica hydrosol, 80-110 parts of vitrified micro-beads, 5-10 parts of floating beads, 10-20 parts of expanded perlite and 620 parts of water 380-;
the waste cellucotton is any one or a composition of any two or three of waste high-silicon-oxygen-dispersion cotton, waste glass cellucotton and waste ceramic cellucotton; the attapulgite hydrosol has a mass concentration of more than 40 percent and is formed by dispersing ultrafine attapulgite with the fineness of more than 800 meshes by an ultrahigh-speed dispersion machine; the mass concentration of the silicon dioxide hydrosol is more than 50 percent, and the silicon dioxide hydrosol is formed by dispersing 20-60 nanometers of nano silicon dioxide by an ultra-high speed dispersion machine;
the preparation method of the nano ceramic composite heat-insulating material comprises the following steps:
1) treatment of waste cellucotton
Shearing and carding the waste cellucotton by a shearing carding machine, removing impurities, and purifying, fluffing and feathering fibers;
2) preparation of hydrosols
Dispersing the superfine attapulgite into high-concentration hydrosol by using an ultrahigh-speed dispersion machine at the revolution of more than 8000 rpm, and dispersing the nano silicon dioxide into the high-concentration hydrosol at the revolution of more than 30000 rpm;
3) preparation of composite materials
Preliminarily mixing the waste fiber cotton carded in the step 1) and sepiolite wool, putting the mixture into water, adding a rapid penetrating agent T, stirring for 15-30min to form pulp, then adding attapulgite hydrosol, stirring for 5-10min at the same rotation speed, adding 10-20 parts of silicon dioxide hydrosol, stirring for 5-15min at the same rotation speed, finally adding residual water, nano zirconium oxide, nano yttrium oxide, vitrified micro bubbles, floating beads and expanded perlite, stirring for 15-30min at the same rotation speed, spraying, drying and forming to obtain the composite material.
2. The method for preparing a nano ceramic composite heat insulating material according to claim 1, comprising the steps of:
1) treatment of waste cellucotton
Shearing and carding the waste cellucotton by a shearing carding machine, removing impurities, and purifying, fluffing and feathering fibers;
2) preparation of hydrosols
Dispersing the superfine attapulgite into high-concentration hydrosol by using an ultrahigh-speed dispersion machine at the revolution of more than 8000 rpm, and dispersing the nano silicon dioxide into the high-concentration hydrosol at the revolution of more than 30000 rpm;
3) preparation of composite materials
Preliminarily mixing the waste fiber cotton carded in the step 1) and sepiolite wool, putting the mixture into water, adding a rapid penetrating agent T, stirring for 15-30min to form pulp, then adding attapulgite hydrosol, stirring for 5-10min at the same rotation speed, adding 10-20 parts of silicon dioxide hydrosol, stirring for 5-15min at the same rotation speed, finally adding residual water, nano zirconium oxide, nano yttrium oxide, vitrified micro bubbles, floating beads and expanded perlite, stirring for 15-30min at the same rotation speed, spraying, drying and forming to obtain the composite material.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113307550A (en) * | 2021-05-19 | 2021-08-27 | 英索来欣(苏州)新材料科技有限公司 | Vacuum heat-insulating material and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0106246A1 (en) * | 1982-10-01 | 1984-04-25 | General Refractories Company | Expanded perlite/alkali metal silicate insulation material and a process for the production thereof |
| CN103819998A (en) * | 2012-11-16 | 2014-05-28 | 苏州裕丰装饰门窗有限公司 | Heat insulating coating as well as coating method, paint and preparing method thereof |
| CN106830873A (en) * | 2017-02-17 | 2017-06-13 | 于斌 | Multi-functional composite magnesium silicate heat preserving and insulating material formula and preparation technology |
| CN107338574A (en) * | 2017-07-24 | 2017-11-10 | 苏州宏久航空防热材料科技有限公司 | A kind of radiation-resistant ceramics cellucotton composite |
| CN107602053A (en) * | 2017-09-30 | 2018-01-19 | 烟台科立达节能科技有限公司 | Nano silicon-based compound heat insulation coating and preparation method thereof |
-
2020
- 2020-05-22 CN CN202010444108.5A patent/CN111574176A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0106246A1 (en) * | 1982-10-01 | 1984-04-25 | General Refractories Company | Expanded perlite/alkali metal silicate insulation material and a process for the production thereof |
| CN103819998A (en) * | 2012-11-16 | 2014-05-28 | 苏州裕丰装饰门窗有限公司 | Heat insulating coating as well as coating method, paint and preparing method thereof |
| CN106830873A (en) * | 2017-02-17 | 2017-06-13 | 于斌 | Multi-functional composite magnesium silicate heat preserving and insulating material formula and preparation technology |
| CN107338574A (en) * | 2017-07-24 | 2017-11-10 | 苏州宏久航空防热材料科技有限公司 | A kind of radiation-resistant ceramics cellucotton composite |
| CN107602053A (en) * | 2017-09-30 | 2018-01-19 | 烟台科立达节能科技有限公司 | Nano silicon-based compound heat insulation coating and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113307550A (en) * | 2021-05-19 | 2021-08-27 | 英索来欣(苏州)新材料科技有限公司 | Vacuum heat-insulating material and preparation method thereof |
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Application publication date: 20200825 |