CN108275886B - Aerogel heat preservation felt prepared from industrial solid waste and preparation method - Google Patents
Aerogel heat preservation felt prepared from industrial solid waste and preparation method Download PDFInfo
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- CN108275886B CN108275886B CN201810032399.XA CN201810032399A CN108275886B CN 108275886 B CN108275886 B CN 108275886B CN 201810032399 A CN201810032399 A CN 201810032399A CN 108275886 B CN108275886 B CN 108275886B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
- C03C13/06—Mineral fibres, e.g. slag wool, mineral wool, rock wool
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/04—Manufacture of glass fibres or filaments by using centrifugal force, e.g. spinning through radial orifices; Construction of the spinner cups therefor
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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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- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0045—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by a process involving the formation of a sol or a gel, e.g. sol-gel or precipitation processes
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/165—Ethers
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
Abstract
The invention discloses an aerogel heat preservation felt and a preparation method thereof, belongs to the technical field of aerogel heat preservation felt production, mainly relates to an aerogel heat preservation felt prepared by using industrial solid waste and a preparation method thereof, and aims to solve the problems that the utilization rate of the industrial solid waste is low and the direct discharge of pollutants generated in the production process causes environmental pollution in the prior art. An aerogel heat preservation felt prepared by using industrial solid waste comprises 80-90 parts of slag, 10-20 parts of silica, 2-5 parts of chopped ceramic fiber, 0.5-1 part of titanium dioxide powder, 1-3 parts of film forming additive and 5-8 parts of coupling agent; the invention also discloses a preparation method thereof, which comprises the steps of drying and distribution, electric melting fiber forming, felt making, aerogel soaking, drying, rolling and packaging, and the industrial solid waste is subjected to advanced processing treatment to form the aerogel heat preservation felt with good heat preservation performance and hydrophobic performance. The invention does not need to add chemical reagents, has simple process and is easy to realize.
Description
Technical Field
The invention relates to an aerogel heat preservation felt and a preparation method thereof, belongs to the technical field of aerogel heat preservation felt production, and particularly relates to an aerogel heat preservation felt prepared by using industrial solid waste and a preparation method thereof.
Background
With the development of science and technology and the progress of society, people are more and more conscious of environmental protection, and some heavily polluted industrial processing products begin to transform to an environment-friendly production mode. Industrial solid waste gas, which is a waste product of industrial production, contains a large amount of oxides of calcium, silicon, aluminum, magnesium and iron and a small amount of sulfides, and if the industrial solid waste gas is discarded at will, the waste gas not only causes environmental pollution, but also wastes resources. Therefore, the treatment of industrial solid waste is a hot topic of human research today. At present, the treatment of industrial solid wastes is mainly used for preparing primary products such as concrete, cement and the like, the utilization rate is low, and pollutants generated in the production process are directly discharged to cause pollution to the environment.
Disclosure of Invention
In order to solve the problems, the invention discloses an aerogel heat preservation felt prepared by using industrial solid waste and a preparation method thereof.
The purpose of the invention is realized as follows:
the aerogel thermal insulation blanket prepared from industrial solid waste comprises slag, silica, chopped ceramic fibers and titanium dioxide powder, wherein the slag, the silica, the chopped ceramic fibers and the titanium dioxide powder comprise the following components in parts by weight: 80-90 parts of slag, 10-20 parts of silica, 2-5 parts of chopped ceramic fiber, 0.5-1 part of titanium dioxide powder, 1-3 parts of film-forming assistant and 5-8 parts of coupling agent.
Further, the film forming auxiliary agent is one or two of propylene glycol butyl ether and propylene glycol methyl ether acetate.
Further, the coupling agent is an amino hydrocarbon-based coupling agent or an isocyanic hydrocarbon-based coupling agent.
A preparation method of an aerogel heat preservation felt prepared by using industrial solid waste comprises the following steps:
step one, drying and distributing: the mixture of slag, silica, chopped ceramic fiber and titanium dioxide powder is sieved by a 200-240 mesh sieve, and the mixture is dried by a drying tower.
Step two, electric melting fiber forming: and (3) heating the mixture dried in the step one by a crucible, electrically melting the mixture into a melt, and preparing the melt into fibers by a fiber-forming centrifuge.
Furthermore, the fiber fineness in the second step is superfine fiber, and the fineness is 0.0025-0.0075 denier.
Further, the melt acidity in the second step is 2.0-2.4.
Step three, felting: and D, felting the fibers prepared in the step two through a felting machine.
Step four, soaking the aerogel: and (3) hydrolyzing the aerogel in an organic solution to obtain a glue solution, putting the fiber felt prepared in the step three into the glue solution, and adding a film-forming assistant and a coupling agent.
Step five, drying and rolling: and drying the heat preservation felt formed in the fourth step by a drying tower, and then rolling and warehousing.
Further, the thickness of the heat preservation felt in the fifth step is 5-30 mm.
Compared with the prior art, the invention has the following beneficial effects: according to the aerogel heat preservation felt prepared by utilizing the industrial solid waste and the preparation method, the industrial solid waste is subjected to deep processing treatment through the steps of drying and distribution, electric melting fiber forming, felt making, aerogel soaking, drying, rolling and packaging, so that the aerogel heat preservation felt with good heat preservation performance and hydrophobic performance is formed. The invention does not need to add chemical reagents, reduces the air pollution, has simple process and is easy to realize.
Detailed Description
Testing the heat preservation performance:
example 1
The aerogel thermal insulation blanket prepared from industrial solid waste comprises slag, silica, chopped ceramic fibers and titanium dioxide powder, wherein the slag, the silica, the chopped ceramic fibers and the titanium dioxide powder comprise the following components in parts by weight: 80 parts of slag, 10 parts of silica, 2 parts of chopped ceramic fiber, 0.5 part of titanium dioxide powder, 1 part of film-forming assistant and 5 parts of coupling agent.
The film-forming auxiliary agent is one or two of propylene glycol butyl ether and propylene glycol methyl ether acetate.
The coupling agent is an amino alkyl coupling agent or an isocyanate alkyl coupling agent.
A preparation method of an aerogel heat preservation felt prepared by using industrial solid waste comprises the following steps:
step one, drying and distributing: sieving the mixture of slag, silica, chopped ceramic fiber and titanium dioxide powder with a 200-mesh sieve, and drying the mixture by a drying tower;
step two, electric melting fiber forming: heating the mixture dried in the step one by a crucible, electrically melting the mixture into a melt, and preparing the melt into fibers by a fiber-forming centrifuge;
step three, felting: felting the fibers prepared in the step two by a felting machine;
step four, soaking the aerogel: hydrolyzing the aerogel in an organic solution to obtain a glue solution, putting the fibrofelt prepared in the step three into the glue solution, and adding a film-forming assistant and a coupling agent;
step five, drying and rolling: and drying the heat preservation felt formed in the fourth step by a drying tower, and then rolling and warehousing.
And step two, the fiber fineness is superfine fiber, and the fineness is 0.0025 denier.
And step two, the melt acidity is 2.0.
And fifthly, the thickness of the heat preservation felt is 5 mm.
Example 2
The aerogel thermal insulation blanket prepared from industrial solid waste comprises slag, silica, chopped ceramic fibers and titanium dioxide powder, wherein the slag, the silica, the chopped ceramic fibers and the titanium dioxide powder comprise the following components in parts by weight: 82 parts of slag, 12 parts of silica, 3 parts of chopped ceramic fiber, 0.6 part of titanium dioxide powder, 1.5 parts of film-forming assistant and 6 parts of coupling agent.
The film-forming auxiliary agent is one or two of propylene glycol butyl ether and propylene glycol methyl ether acetate.
The coupling agent is an amino alkyl coupling agent or an isocyanate alkyl coupling agent.
A preparation method of an aerogel heat preservation felt prepared by using industrial solid waste comprises the following steps:
step one, drying and distributing: sieving the mixture of the slag, the silica, the chopped ceramic fibers and the titanium dioxide powder by a 210-mesh sieve, and drying the mixture by a drying tower;
step two, electric melting fiber forming: heating the mixture dried in the step one by a crucible, electrically melting the mixture into a melt, and preparing the melt into fibers by a fiber-forming centrifuge;
step three, felting: felting the fibers prepared in the step two by a felting machine;
step four, soaking the aerogel: hydrolyzing the aerogel in an organic solution to obtain a glue solution, putting the fibrofelt prepared in the step three into the glue solution, and adding a film-forming assistant and a coupling agent;
step five, drying and rolling: and drying the heat preservation felt formed in the fourth step by a drying tower, and then rolling and warehousing.
And step two, the fiber fineness is superfine fiber, and the fineness is 0.0035 denier.
And step two, the melt acidity is 2.1.
And fifthly, the thickness of the heat preservation felt is 10 mm.
Example 3
The aerogel thermal insulation blanket prepared from industrial solid waste comprises slag, silica, chopped ceramic fibers and titanium dioxide powder, wherein the slag, the silica, the chopped ceramic fibers and the titanium dioxide powder comprise the following components in parts by weight: 85 parts of slag, 15 parts of silica, 4 parts of chopped ceramic fiber, 0.7 part of titanium dioxide powder, 2 parts of film-forming assistant and 6.5 parts of coupling agent.
The film-forming auxiliary agent is one or two of propylene glycol butyl ether and propylene glycol methyl ether acetate.
The coupling agent is an amino alkyl coupling agent or an isocyanate alkyl coupling agent.
A preparation method of an aerogel heat preservation felt prepared by using industrial solid waste comprises the following steps:
step one, drying and distributing: sieving the mixture of the slag, the silica, the chopped ceramic fibers and the titanium dioxide powder by a 220-mesh sieve, and drying the mixture by a drying tower;
step two, electric melting fiber forming: heating the mixture dried in the step one by a crucible, electrically melting the mixture into a melt, and preparing the melt into fibers by a fiber-forming centrifuge;
step three, felting: felting the fibers prepared in the step two by a felting machine;
step four, soaking the aerogel: hydrolyzing the aerogel in an organic solution to obtain a glue solution, putting the fibrofelt prepared in the step three into the glue solution, and adding a film-forming assistant and a coupling agent;
step five, drying and rolling: and drying the heat preservation felt formed in the fourth step by a drying tower, and then rolling and warehousing.
And step two, the fiber fineness is superfine fiber, and the fineness is 0.0055 denier.
And step two, the melt acidity is 2.2.
And fifthly, the thickness of the heat preservation felt is 15 mm.
Example 4
The aerogel thermal insulation blanket prepared from industrial solid waste comprises slag, silica, chopped ceramic fibers and titanium dioxide powder, wherein the slag, the silica, the chopped ceramic fibers and the titanium dioxide powder comprise the following components in parts by weight: 88 parts of slag, 18 parts of silica, 4.5 parts of chopped ceramic fiber, 0.9 part of titanium dioxide powder, 2.5 parts of film-forming assistant and 7.5 parts of coupling agent.
The film-forming auxiliary agent is one or two of propylene glycol butyl ether and propylene glycol methyl ether acetate.
The coupling agent is an amino alkyl coupling agent or an isocyanate alkyl coupling agent.
A preparation method of an aerogel heat preservation felt prepared by using industrial solid waste comprises the following steps:
step one, drying and distributing: sieving the mixture of the slag, the silica, the chopped ceramic fibers and the titanium dioxide powder through a 230-mesh sieve, and drying the mixture through a drying tower;
step two, electric melting fiber forming: heating the mixture dried in the step one by a crucible, electrically melting the mixture into a melt, and preparing the melt into fibers by a fiber-forming centrifuge;
step three, felting: felting the fibers prepared in the step two by a felting machine;
step four, soaking the aerogel: hydrolyzing the aerogel in an organic solution to obtain a glue solution, putting the fibrofelt prepared in the step three into the glue solution, and adding a film-forming assistant and a coupling agent;
step five, drying and rolling: and drying the heat preservation felt formed in the fourth step by a drying tower, and then rolling and warehousing.
And step two, the fiber fineness is ultrafine fiber, and the fiber number is 0.0065 denier.
And step two, the melt acidity is 2.3.
And fifthly, the thickness of the heat preservation felt is 20 mm.
Example 5
The aerogel thermal insulation blanket prepared from industrial solid waste comprises slag, silica, chopped ceramic fibers and titanium dioxide powder, wherein the slag, the silica, the chopped ceramic fibers and the titanium dioxide powder comprise the following components in parts by weight: 90 parts of slag, 20 parts of silica, 5 parts of chopped ceramic fiber, 1 part of titanium dioxide powder, 3 parts of film-forming assistant and 8 parts of coupling agent.
The film-forming auxiliary agent is one or two of propylene glycol butyl ether and propylene glycol methyl ether acetate.
The coupling agent is an amino alkyl coupling agent or an isocyanate alkyl coupling agent.
A preparation method of an aerogel heat preservation felt prepared by using industrial solid waste comprises the following steps:
step one, drying and distributing: sieving the mixture of the slag, the silica, the chopped ceramic fibers and the titanium dioxide powder by a 240-mesh sieve, and drying the mixture by a drying tower;
step two, electric melting fiber forming: heating the mixture dried in the step one by a crucible, electrically melting the mixture into a melt, and preparing the melt into fibers by a fiber-forming centrifuge;
step three, felting: felting the fibers prepared in the step two by a felting machine;
step four, soaking the aerogel: hydrolyzing the aerogel in an organic solution to obtain a glue solution, putting the fibrofelt prepared in the step three into the glue solution, and adding a film-forming assistant and a coupling agent;
step five, drying and rolling: and drying the heat preservation felt formed in the fourth step by a drying tower, and then rolling and warehousing.
And step two, the fiber fineness is superfine fiber, and the fineness is 0.0075 denier.
And step two, the melt acidity is 2.4.
And fifthly, the thickness of the heat preservation felt is 30 mm.
Comparative example 1
The aerogel thermal insulation blanket prepared from industrial solid waste comprises slag, silica, chopped ceramic fibers and titanium dioxide powder, wherein the slag, the silica, the chopped ceramic fibers and the titanium dioxide powder comprise the following components in parts by weight: 72 parts of slag, 8 parts of silica, 1 part of chopped ceramic fiber, 1.2 parts of titanium dioxide powder, 4 parts of film-forming assistant and 10 parts of coupling agent.
The film-forming auxiliary agent is one or two of propylene glycol butyl ether and propylene glycol methyl ether acetate.
The coupling agent is an amino alkyl coupling agent or an isocyanate alkyl coupling agent.
A preparation method of an aerogel heat preservation felt prepared by using industrial solid waste comprises the following steps:
step one, drying and distributing: sieving the mixture of slag, silica, chopped ceramic fiber and titanium dioxide powder with a 280-mesh sieve, and drying the mixture by a drying tower;
step two, electric melting fiber forming: heating the mixture dried in the step one by a crucible, electrically melting the mixture into a melt, and preparing the melt into fibers by a fiber-forming centrifuge;
step three, felting: felting the fibers prepared in the step two by a felting machine;
step four, soaking the aerogel: hydrolyzing the aerogel in an organic solution to obtain a glue solution, putting the fibrofelt prepared in the step three into the glue solution, and adding a film-forming assistant and a coupling agent;
step five, drying and rolling: and drying the heat preservation felt formed in the fourth step by a drying tower, and then rolling and warehousing.
And step two, the fiber fineness is superfine fiber, and the fineness is 0.0095 denier.
And step two, the melt acidity is 2.8.
And fifthly, the thickness of the heat preservation felt is 35 mm.
The test method of the heat retention property comprises the following steps: according to the proportion of the aerogel heat preservation felts in the embodiments 1-5 and the comparative example 1, square test blocks with the thickness of 30mm x 30mm are respectively cut out from the aerogel heat preservation felts in the embodiments 1-5 and the comparative example 1, the test blocks are placed in a 65 ℃ oven, the test blocks are taken out after 45 minutes of test, the time required for the surface temperature of the test blocks to be reduced from 33 ℃ to 23 ℃ is measured, and the calculation formula of the temperature reduction time index TI is as follows:
in the formula, TI is a cooling time constant, t is a cooling time, d is a test block thickness, and the test results are shown in table 1.
TABLE 1 test of warmth retention Properties
Table 1 above shows the thermal insulation performance of the aerogel thermal insulation blankets in examples 1 to 5 and comparative example 1 at different mixture ratios, and it can be seen from table 1 that, compared with the prior art, the temperature-decreasing time constant of example 1 is increased by 21.7%, the temperature-decreasing time constant of example 2 is increased by 27.8%, the temperature-decreasing time constant of example 3 is increased by 34.2%, the temperature-decreasing time constant of example 4 is increased by 40.0%, and the temperature-decreasing time constant of example 5 is increased by 44.8%.
Testing the hydrophobic property:
example 6
The aerogel thermal insulation blanket prepared from industrial solid waste comprises slag, silica, chopped ceramic fibers and titanium dioxide powder, wherein the slag, the silica, the chopped ceramic fibers and the titanium dioxide powder comprise the following components in parts by weight: 80 parts of slag, 10 parts of silica, 2 parts of chopped ceramic fiber, 0.5 part of titanium dioxide powder, 1 part of film-forming assistant and 5 parts of coupling agent.
The film-forming auxiliary agent is one or two of propylene glycol butyl ether and propylene glycol methyl ether acetate.
The coupling agent is an amino alkyl coupling agent or an isocyanate alkyl coupling agent.
A preparation method of an aerogel heat preservation felt prepared by using industrial solid waste comprises the following steps:
step one, drying and distributing: sieving the mixture of slag, silica, chopped ceramic fiber and titanium dioxide powder with a 200-mesh sieve, and drying the mixture by a drying tower;
step two, electric melting fiber forming: heating the mixture dried in the step one by a crucible, electrically melting the mixture into a melt, and preparing the melt into fibers by a fiber-forming centrifuge;
step three, felting: felting the fibers prepared in the step two by a felting machine;
step four, soaking the aerogel: hydrolyzing the aerogel in an organic solution to obtain a glue solution, putting the fibrofelt prepared in the step three into the glue solution, and adding a film-forming assistant and a coupling agent;
step five, drying and rolling: and drying the heat preservation felt formed in the fourth step by a drying tower, and then rolling and warehousing.
And step two, the fiber fineness is superfine fiber, and the fineness is 0.0025 denier.
And step two, the melt acidity is 2.0.
And fifthly, the thickness of the heat preservation felt is 5 mm.
Example 7
The aerogel thermal insulation blanket prepared from industrial solid waste comprises slag, silica, chopped ceramic fibers and titanium dioxide powder, wherein the slag, the silica, the chopped ceramic fibers and the titanium dioxide powder comprise the following components in parts by weight: 82 parts of slag, 12 parts of silica, 3 parts of chopped ceramic fiber, 0.6 part of titanium dioxide powder, 1.5 parts of film-forming assistant and 6 parts of coupling agent.
The film-forming auxiliary agent is one or two of propylene glycol butyl ether and propylene glycol methyl ether acetate.
The coupling agent is an amino alkyl coupling agent or an isocyanate alkyl coupling agent.
A preparation method of an aerogel heat preservation felt prepared by using industrial solid waste comprises the following steps:
step one, drying and distributing: sieving the mixture of the slag, the silica, the chopped ceramic fibers and the titanium dioxide powder by a 210-mesh sieve, and drying the mixture by a drying tower;
step two, electric melting fiber forming: heating the mixture dried in the step one by a crucible, electrically melting the mixture into a melt, and preparing the melt into fibers by a fiber-forming centrifuge;
step three, felting: felting the fibers prepared in the step two by a felting machine;
step four, soaking the aerogel: hydrolyzing the aerogel in an organic solution to obtain a glue solution, putting the fibrofelt prepared in the step three into the glue solution, and adding a film-forming assistant and a coupling agent;
step five, drying and rolling: and drying the heat preservation felt formed in the fourth step by a drying tower, and then rolling and warehousing.
And step two, the fiber fineness is superfine fiber, and the fineness is 0.0035 denier.
And step two, the melt acidity is 2.1.
And fifthly, the thickness of the heat preservation felt is 10 mm.
Example 8
The aerogel thermal insulation blanket prepared from industrial solid waste comprises slag, silica, chopped ceramic fibers and titanium dioxide powder, wherein the slag, the silica, the chopped ceramic fibers and the titanium dioxide powder comprise the following components in parts by weight: 85 parts of slag, 15 parts of silica, 4 parts of chopped ceramic fiber, 0.7 part of titanium dioxide powder, 2 parts of film-forming assistant and 6.5 parts of coupling agent.
The film-forming auxiliary agent is one or two of propylene glycol butyl ether and propylene glycol methyl ether acetate.
The coupling agent is an amino alkyl coupling agent or an isocyanate alkyl coupling agent.
A preparation method of an aerogel heat preservation felt prepared by using industrial solid waste comprises the following steps:
step one, drying and distributing: sieving the mixture of the slag, the silica, the chopped ceramic fibers and the titanium dioxide powder by a 220-mesh sieve, and drying the mixture by a drying tower;
step two, electric melting fiber forming: heating the mixture dried in the step one by a crucible, electrically melting the mixture into a melt, and preparing the melt into fibers by a fiber-forming centrifuge;
step three, felting: felting the fibers prepared in the step two by a felting machine;
step four, soaking the aerogel: hydrolyzing the aerogel in an organic solution to obtain a glue solution, putting the fibrofelt prepared in the step three into the glue solution, and adding a film-forming assistant and a coupling agent;
step five, drying and rolling: and drying the heat preservation felt formed in the fourth step by a drying tower, and then rolling and warehousing.
And step two, the fiber fineness is superfine fiber, and the fineness is 0.0055 denier.
And step two, the melt acidity is 2.2.
And fifthly, the thickness of the heat preservation felt is 15 mm.
Example 9
The aerogel thermal insulation blanket prepared from industrial solid waste comprises slag, silica, chopped ceramic fibers and titanium dioxide powder, wherein the slag, the silica, the chopped ceramic fibers and the titanium dioxide powder comprise the following components in parts by weight: 88 parts of slag, 18 parts of silica, 4.5 parts of chopped ceramic fiber, 0.9 part of titanium dioxide powder, 2.5 parts of film-forming assistant and 7.5 parts of coupling agent.
The film-forming auxiliary agent is one or two of propylene glycol butyl ether and propylene glycol methyl ether acetate.
The coupling agent is an amino alkyl coupling agent or an isocyanate alkyl coupling agent.
A preparation method of an aerogel heat preservation felt prepared by using industrial solid waste comprises the following steps:
step one, drying and distributing: sieving the mixture of the slag, the silica, the chopped ceramic fibers and the titanium dioxide powder through a 230-mesh sieve, and drying the mixture through a drying tower;
step two, electric melting fiber forming: heating the mixture dried in the step one by a crucible, electrically melting the mixture into a melt, and preparing the melt into fibers by a fiber-forming centrifuge;
step three, felting: felting the fibers prepared in the step two by a felting machine;
step four, soaking the aerogel: hydrolyzing the aerogel in an organic solution to obtain a glue solution, putting the fibrofelt prepared in the step three into the glue solution, and adding a film-forming assistant and a coupling agent;
step five, drying and rolling: and drying the heat preservation felt formed in the fourth step by a drying tower, and then rolling and warehousing.
And step two, the fiber fineness is ultrafine fiber, and the fiber number is 0.0065 denier.
And step two, the melt acidity is 2.3.
And fifthly, the thickness of the heat preservation felt is 20 mm.
Example 10
The aerogel thermal insulation blanket prepared from industrial solid waste comprises slag, silica, chopped ceramic fibers and titanium dioxide powder, wherein the slag, the silica, the chopped ceramic fibers and the titanium dioxide powder comprise the following components in parts by weight: 90 parts of slag, 20 parts of silica, 5 parts of chopped ceramic fiber, 1 part of titanium dioxide powder, 3 parts of film-forming assistant and 8 parts of coupling agent.
The film-forming auxiliary agent is one or two of propylene glycol butyl ether and propylene glycol methyl ether acetate.
The coupling agent is an amino alkyl coupling agent or an isocyanate alkyl coupling agent.
A preparation method of an aerogel heat preservation felt prepared by using industrial solid waste comprises the following steps:
step one, drying and distributing: sieving the mixture of the slag, the silica, the chopped ceramic fibers and the titanium dioxide powder by a 240-mesh sieve, and drying the mixture by a drying tower;
step two, electric melting fiber forming: heating the mixture dried in the step one by a crucible, electrically melting the mixture into a melt, and preparing the melt into fibers by a fiber-forming centrifuge;
step three, felting: felting the fibers prepared in the step two by a felting machine;
step four, soaking the aerogel: hydrolyzing the aerogel in an organic solution to obtain a glue solution, putting the fibrofelt prepared in the step three into the glue solution, and adding a film-forming assistant and a coupling agent;
step five, drying and rolling: and drying the heat preservation felt formed in the fourth step by a drying tower, and then rolling and warehousing.
And step two, the fiber fineness is superfine fiber, and the fineness is 0.0075 denier.
And step two, the melt acidity is 2.4.
And fifthly, the thickness of the heat preservation felt is 30 mm.
Comparative example 2
The aerogel thermal insulation blanket prepared from industrial solid waste comprises slag, silica, chopped ceramic fibers and titanium dioxide powder, wherein the slag, the silica, the chopped ceramic fibers and the titanium dioxide powder comprise the following components in parts by weight: 72 parts of slag, 8 parts of silica, 1 part of chopped ceramic fiber, 1.2 parts of titanium dioxide powder, 4 parts of film-forming assistant and 10 parts of coupling agent.
The film-forming auxiliary agent is one or two of propylene glycol butyl ether and propylene glycol methyl ether acetate.
The coupling agent is an amino alkyl coupling agent or an isocyanate alkyl coupling agent.
A preparation method of an aerogel heat preservation felt prepared by using industrial solid waste comprises the following steps:
step one, drying and distributing: sieving the mixture of slag, silica, chopped ceramic fiber and titanium dioxide powder with a 280-mesh sieve, and drying the mixture by a drying tower;
step two, electric melting fiber forming: heating the mixture dried in the step one by a crucible, electrically melting the mixture into a melt, and preparing the melt into fibers by a fiber-forming centrifuge;
step three, felting: felting the fibers prepared in the step two by a felting machine;
step four, soaking the aerogel: hydrolyzing the aerogel in an organic solution to obtain a glue solution, putting the fibrofelt prepared in the step three into the glue solution, and adding a film-forming assistant and a coupling agent;
step five, drying and rolling: and drying the heat preservation felt formed in the fourth step by a drying tower, and then rolling and warehousing.
And step two, the fiber fineness is superfine fiber, and the fineness is 0.0095 denier.
And step two, the melt acidity is 2.8.
And fifthly, the thickness of the heat preservation felt is 35 mm.
The hydrophobic property test method comprises the following steps: the aerogel heat preservation felt of the embodiment 6-10 and the comparative example 2 is prepared into a 100mm by 200mm aerogel heat preservation felt test block according to the mixture ratio of the embodiment 6-10 and the comparative example 2, water is dripped on each test block, an included angle formed by a tangent line along the surface of the water dripping and the surface of a material, namely a wetting angle is tested, and when the wetting angle is larger than 90 degrees, the aerogel heat preservation felt is hydrophobic. The test results are shown in table 2.
TABLE 2 hydrophobic Properties test
Table 2 above shows the hydrophobic properties of the aerogel insulation blankets of examples 6-10 and comparative example 2 at different formulations, and it can be seen from Table 2 that the wetting angle of example 6 is increased by 8.19%, the wetting angle of example 7 is increased by 11.52%, the wetting angle of example 8 is increased by 24.68%, the wetting angle of example 9 is increased by 30.74%, and the wetting angle of example 10 is increased by 38.51% compared to the prior art.
It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the invention should, therefore, be determined not with reference to the above description, but instead should be determined with reference to the pending claims along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of subject matter that is disclosed herein is not intended to forego the subject matter and should not be construed as an admission that the applicant does not consider such subject matter to be part of the disclosed subject matter.
The above list of details is only for the concrete description of the feasible embodiments of the present application, they are not intended to limit the scope of the present application, and all equivalent embodiments or modifications that do not depart from the technical spirit of the present application are intended to be included within the scope of the present application.
Claims (6)
1. An aerogel heat preservation felt prepared by using industrial solid waste comprises slag, silica, chopped ceramic fiber, titanium dioxide powder, film forming auxiliary agent and coupling agent, and is characterized in that: the slag, the silica, the chopped ceramic fiber, the titanium dioxide powder, the film-forming assistant and the coupling agent are as follows in parts by weight: 80-90 parts of slag, 10-20 parts of silica, 2-5 parts of chopped ceramic fiber, 0.5-1 part of titanium dioxide powder, 1-3 parts of film-forming assistant and 5-8 parts of coupling agent;
the preparation method of the aerogel heat preservation felt prepared by utilizing the industrial solid waste comprises the following steps:
step one, drying and distributing: sieving the mixture of the slag, the silica, the chopped ceramic fiber and the titanium dioxide powder by a sieve of 200-240 meshes, and drying the mixture by a drying tower;
step two, electric melting fiber forming: heating the mixture dried in the step one by a crucible, electrically melting the mixture into a melt, and preparing the melt into fibers by a fiber-forming centrifuge;
step three, felting: felting the fibers prepared in the step two by a felting machine;
step four, soaking the aerogel: hydrolyzing the aerogel in an organic solution to obtain a glue solution, putting the fibrofelt prepared in the step three into the glue solution, and adding a film-forming assistant and a coupling agent;
step five, drying and rolling: and drying the heat preservation felt formed in the fourth step by a drying tower, and then rolling and warehousing.
2. The aerogel thermal insulation blanket prepared by using industrial solid waste as claimed in claim 1, wherein: the film-forming auxiliary agent is one or two of propylene glycol butyl ether and propylene glycol methyl ether acetate.
3. The aerogel thermal insulation blanket prepared by using industrial solid waste as claimed in claim 1, wherein: the coupling agent is an amino alkyl coupling agent or an isocyanate alkyl coupling agent.
4. The aerogel thermal insulation blanket prepared by using industrial solid waste as claimed in claim 1, wherein: and step two, the fiber fineness is superfine fiber, and the fineness is 0.0025-0.0075 denier.
5. The aerogel thermal insulation blanket prepared by using industrial solid waste as claimed in claim 1, wherein: and the acidity of the melt in the second step is 2.0-2.4.
6. The aerogel thermal insulation blanket prepared by using industrial solid waste as claimed in claim 1, wherein: and fifthly, the thickness of the heat preservation felt is 5-30 mm.
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| CN112830760B (en) * | 2021-01-20 | 2021-11-26 | 湖南荣岚智能科技有限公司 | Heat-insulating and high-temperature-resistant aerogel gradient composite material and preparation method thereof |
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