CN111592291A - Novel FBT-X rare earth series composite heat-insulating material and preparation method thereof - Google Patents
Novel FBT-X rare earth series composite heat-insulating material and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a novel FBT-X series rare earth composite heat insulation material and a preparation method thereof. The production process of the material utilizes the physical and chemical action principles of material surface treatment, mechanochemical modification, encapsulation modification and the like, so that a large number of closed vacuum-like micropores are generated in the product, the porosity and the specific surface area are increased, and the dried heat-insulating material has a layered reticular stacked force unit and a filling structure, thereby endowing the material with excellent heat-insulating property and long service life. The material has wide application range, can be used for heat preservation of various equipment and pipelines at the temperature of between 40 ℃ below zero and 800 ℃, and is particularly suitable for heat preservation of special-shaped bodies. The material is simple and easy to construct, convenient to detect and maintain, free of asbestos in the material, free of dust during construction, recyclable in excess materials, and environment-friendly.
Description
Technical Field
The invention relates to the field of heat-insulating materials, in particular to a novel FBT-X series rare earth composite heat-insulating material and a preparation method thereof.
Background
The heat insulation technology is the most economic and obvious important measure for saving energy and reducing consumption, and the research and development of novel heat insulation materials are important subjects of energy saving, consumption reduction and emission reduction. At present, the traditional inorganic fiber materials such as rock wool, glass wool, aluminum silicate wool and the like are still dominant in industrial heat preservation, the materials are relatively cheap and simple to construct, but most of the materials have the problems of single material, limited functions, poor heat insulation performance, incapability of being stably used for a long time and the like. The composite heat-insulating material developed in the nineties of the last century has certain advantages in heat-insulating property and service life, is particularly suitable for heat insulation of special-shaped equipment, and is once favored by users. However, the materials have no unified formula, are different in quality and performance due to the fact that the materials are developed too fast, are not good enough in mud and sand, and are greatly different in quality, and particularly, the defects and the defects of the materials are gradually revealed along with the improvement of national requirements for environmental protection and the appearance of some novel materials. Firstly, most of raw materials used by the product comprise asbestos and an OT penetrant, wherein the asbestos is a carcinogenic substance, the OT penetrant has pungent smell, the harm is caused to the health of production operators, the environment is polluted, and the energy consumption is high in the production process of some plates, so that the energy-saving and environment-friendly requirements are not met; secondly, some products have poor heat insulation performance, particularly certain felt materials taking asbestos as a base material, have large internal pore diameter, poor barrier performance for convection and radiation heat dissipation, high heat conductivity coefficient in a high-temperature state and poor heat insulation effect; thirdly, some products have unstable structural strength, particularly some powder materials formed by mixing sepiolite serving as a main material and other materials can crack, pulverize and fall off after long-term use; and fourthly, the materials have different formulas and more varieties, but most of the materials have single models and limited functions, so that the heat-insulating structure in practical application has a single form, the reasonable combination of complementary functional advantages cannot be carried out in many use occasions, and the use requirements of various different working conditions cannot be better met.
In recent years, novel nano-scale heat insulating materials represented by aerogel have appeared, which are excellent in heat insulating performance, but expensive and mostly used in combination with fiber materials, and disadvantages of the fiber materials and weaknesses of the aerogel still exist, so that the popularization and application of the novel nano-scale heat insulating materials are limited to a certain extent. Therefore, it is necessary to develop a heat insulating material with excellent performance, moderate cost and high comprehensive cost performance.
Disclosure of Invention
The invention provides a novel FBT-X series rare earth composite heat-insulating material.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention aims to provide a novel FBT-X series rare earth composite thermal insulation material which is prepared by taking aluminum silicate cellucotton, sepiolite velvet and brucite fiber as base materials, wherein the raw materials for preparing the rare earth composite thermal insulation material comprise the following components in parts by weight:
10-20 parts of aluminum silicate fiber cotton, 10-20 parts of sepiolite wool, 15-20 parts of brucite fiber, 20-40 parts of filler, 5-10 parts of additive, 2-4 parts of binder and water, wherein the weight of the water is 3-3.5 times of the sum of the weight of the components.
In some embodiments, the filler is a combination of one or more of expanded perlite, expanded perlite powder, vitrified beads, hollow ceramic beads, bentonite, diatomaceous earth, cement.
In some embodiments, the binder is one or a combination of two or more of polyvinyl alcohol, polyimide, and rare earth inorganic high temperature binder.
In some embodiments, the additive is one or a combination of two or more of an AEC surfactant, an isomannic alcohol sulfonate, and a hydrophobic emulsion of silicone.
In some embodiments, the FBT-X1 base composite comprises the following components in parts by weight: 10 parts of high-quality aluminum silicate fiber cotton, 15 parts of sepiolite wool, 15 parts of brucite fiber, 20 parts of bentonite, 30 parts of expanded perlite, 3 parts of AEC surfactant, 3 parts of isomeric alcohol sulfonate, 3 parts of polyimide, 1 part of rare earth inorganic high-temperature binder and 350 parts of water.
In some embodiments, a FBT-X2-type composite material comprises the following components in parts by weight: 15 parts of high-quality aluminum silicate fiber cotton, 15 parts of sepiolite wool, 15 parts of brucite fiber, 17 parts of bentonite, 25 parts of expanded perlite powder, 3 parts of AEC surfactant, 3 parts of isomeric alcohol sulfonate, 1.5 parts of polyimide, 2.5 parts of polyvinyl alcohol, 3 parts of organic silicon hydrophobic emulsion and 310 parts of water.
In some embodiments, a FBT-X3-type composite material comprises the following components in parts by weight: 15 parts of high-quality aluminum silicate fiber cotton, 15 parts of sepiolite wool, 15 parts of brucite fiber, 10 parts of diatomite, 10 parts of cement, 20 parts of vitrified micro-beads, 3 parts of AEC surfactant, 3 parts of isomeric alcohol sulfonate, 2.5 parts of polyvinyl alcohol, 5 parts of organic silicon hydrophobic emulsion, 1.5 parts of polyimide and 320 parts of water.
In particular, the cement adopted by the invention is Portland cement.
In some embodiments, a FBT-X4-type composite material comprises the following components in parts by weight: 15 parts of high-quality aluminum silicate fiber cotton, 15 parts of sepiolite wool, 15 parts of brucite fiber, 15 parts of bentonite, 15 parts of vitrified micro-beads, 5 parts of glass micro-beads, 10 parts of nano hollow ceramic micro-beads, 3 parts of AEC surfactant, 3 parts of isomeric alcohol sulfonate, 2 parts of polyimide, 2 parts of rare earth inorganic high-temperature adhesive and 300 parts of water.
The invention also aims to provide a preparation method of the rare earth composite thermal insulation material, which comprises the following steps:
and (3) adding the diluted AEC surfactant and the isomeric alcohol sulfonate into aluminum silicate fiber cotton for soaking, stirring, adding other raw materials after foaming to a certain degree, and uniformly stirring to obtain the rare earth composite heat-insulating material.
Specifically, weighing each raw material component, diluting AEC surfactant and isomeric alcohol sulfonate with water, adding aluminum silicate cellucotton into the diluted AEC surfactant and isomeric alcohol sulfonate, soaking for more than 8 hours, putting the diluted AEC surfactant and isomeric alcohol sulfonate into a special spiral-flow type stirrer, stirring for about 20 minutes until foaming to a certain degree, sequentially adding other raw materials, stirring while adding materials, and stirring for about 40 minutes to uniformly form viscous paste slurry.
The invention creates the following advantages or beneficial effects:
1. the rare earth composite thermal insulation material has excellent thermal insulation effect, and particularly has better high-temperature thermal insulation performance. The heat preservation surface temperature can be no more than 15 ℃ of the environmental temperature, and the heat dissipation loss is superior to the requirement of the national standard; when the rare earth composite thermal insulation material is used for thermal insulation, the material is saved, and the material is 1/3-1/2 of the traditional material, so that the heat dissipation area and the occupied space are greatly reduced;
2. the rare earth composite thermal insulation material has the advantages of strong bonding force, good structural integrity, high-temperature strength, no cracking, no falling, no seam, no pulverization phenomenon, long service life, low maintenance cost and high comprehensive cost performance;
3. the rare earth composite thermal insulation material has wide application range, can be used for thermal insulation in the environment of-40 ℃ to 800 ℃, is used for thermal insulation of various equipment and pipelines in the industries of petroleum, chemical engineering, electric power, metallurgy and the like, and is particularly suitable for thermal insulation of special-shaped bodies, such as steam turbines, heat pumps, spheres, valves, elbows and variable-diameter pipe sections;
4. the construction is simple and easy, special machines and tools and skills are not needed, only the pasting and the smearing are needed, and the construction quality is easy to guarantee; after the heat insulation material is manufactured and formed, the heat insulation material can be freely dug and mended, and the detection and the maintenance are convenient.
5. The environment-friendly powder coating is safe and environment-friendly, belongs to a high-grade non-combustible material, is resistant to acid, alkali and oil, is anti-corrosive, waterproof and moistureproof, is nontoxic and tasteless, does not emit powder dust, can recycle residual materials, does not pollute the environment, and belongs to an environment-friendly product.
Compared with the prior similar products, the product has obviously improved heat insulation performance, mechanical property, waterproof performance, environmental protection performance, service life and the like, and is an outstanding innovative upgrading product in silicate composite materials.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
The experimental procedures in the following examples are conventional unless otherwise specified. The test materials used in the following examples were purchased from conventional biochemical reagent stores or manufacturers unless otherwise specified. In the quantitative tests in the examples, three times of repeated experiments are set, and the data are the average value or the average value +/-standard deviation of the three times of repeated experiments.
The FBT rare earth composite heat-insulating coating is a patent product in the nineties of the last century, is listed in the popularization plan of national scientific and technological achievements by the national science and commission, and is somewhat reluctant with the continuous development of science and technology. The invention provides a group of novel rare earth composite heat-insulating materials on the basis of improving the original FBT formula, which comprises the following components in parts by weight:
10-20 parts of aluminum silicate fiber cotton, 10-20 parts of sepiolite wool, 15-20 parts of brucite fiber, 20-40 parts of filler, 5-10 parts of additive, 2-4 parts of binder and water, wherein the weight of the water is 3-3.5 times of the sum of the weight of the components.
Wherein the base material is aluminum silicate fiber cotton, sepiolite velvet and brucite fiber; the filler is one or the combination of more than two of expanded perlite, expanded perlite powder, vitrified micro bubbles, glass micro bubbles, nano hollow ceramic micro bubbles, bentonite, diatomite and cement; the binder is one or the combination of more than two of polyvinyl alcohol, polyimide and rare earth inorganic high-temperature binder; the additive is one or the combination of more than two of AEC surfactant, isomeric alcohol sulfonate and organic silicon hydrophobic emulsion.
The material has wide application range, can be used for heat preservation of various equipment and pipelines at the temperature of between 40 ℃ below zero and 800 ℃, and is particularly suitable for heat preservation of special-shaped bodies. Specifically, the present invention can be divided into a plurality of types according to usage scenarios and usage objects, and the following description is given with reference to specific embodiments.
Example 1
The embodiment provides an FBT-X1 basic rare earth composite thermal insulation material, which comprises the following components in parts by weight:
10 parts of aluminum silicate fiber cotton, 15 parts of sepiolite wool, 15 parts of brucite fiber, 20 parts of bentonite, 30 parts of expanded perlite, 3 parts of AEC surfactant, 3 parts of isomeric alcohol sulfonate, 3 parts of polyimide, 1 part of rare earth inorganic high-temperature binder and water, wherein the addition amount of the water is 3.5 times of the sum of the weight of the raw material components.
The rare earth thermal insulation material is prepared by the following steps:
weighing the raw material components, diluting AEC surfactant and isomeric alcohol sulfonate with water, adding aluminum silicate cellucotton into the AEC surfactant and the isomeric alcohol sulfonate, soaking for more than 8 hours, putting the AEC surfactant and the isomeric alcohol sulfonate into a special spiral-flow type stirrer, stirring for about 20 minutes, adding sepiolite wool, brucite fiber, bentonite, expanded perlite, polyimide and a rare earth inorganic high-temperature binder into the stirrer sequentially after foaming to a certain degree, adding the materials while stirring, and stirring for about 40 minutes to form a viscous paste-shaped slurry, thereby obtaining the FBT-X1 basic rare earth composite heat-insulating material.
The embodiment 1 of the invention provides a basic rare earth composite heat-insulating material, which is characterized in that other materials are used for replacing asbestos wool and an OT penetrating agent on the basis of the original FBT formula, so that the environmental protection performance is improved. The common aluminum silicate cotton is changed into high-quality aluminum silicate fiber cotton, and the common expanded perlite is changed into high-quality expanded perlite, so that the heat insulation performance and the mechanical property of the raw material matrix are improved. By adding other novel auxiliary materials and through a specific process and physical and chemical effects, a large number of closed vacuum-like micropores are generated in the material, the porosity and the specific surface area are increased, and after the heat-insulating material is dried, a layered mesh stacking unit and a filling structure are formed in the material, so that the heat-insulating material has a strong framework and affinity. The heat insulation material has the heat insulation effect of the base material, the heat insulation function and the structural strength of the heat insulation material are further enhanced through a new structure formed by compounding, the heat insulation effect of the material is greatly improved, and the service life of the material is greatly prolonged.
The basic rare earth composite thermal insulation material can be directly coated with prepared paste slurry, or can be formed by a mould and then made into plates and other sectional materials by hot air drying and natural airing, and the paste is pasted on a thermal insulation body when in use, so that the basic rare earth composite thermal insulation material is suitable for most working conditions and use occasions.
Example 2
The embodiment provides an FBT-X2 surface type rare earth composite heat-insulating material, which comprises the following components in parts by weight:
15 parts of aluminum silicate fiber cotton, 15 parts of sepiolite wool, 15 parts of brucite fiber, 3 parts of AEC surfactant, 3 parts of isomeric alcohol sulfonate, 17 parts of bentonite, 25 parts of expanded perlite powder, 1.5 parts of polyimide, 2.5 parts of polyvinyl alcohol, 3 parts of organic silicon hydrophobic emulsion and water, wherein the adding amount of the water is 3.1 times of the sum of the weight of the raw material components.
The rare earth thermal insulation material is prepared by the following steps:
weighing the raw material components, firstly diluting AEC surfactant and isomeric alcohol sulfonate with water, adding aluminum silicate fiber cotton into the AEC surfactant and the isomeric alcohol sulfonate, soaking for more than 8 hours, putting the AEC surfactant and the isomeric alcohol sulfonate into a special spiral-flow type stirrer, stirring for about 20 minutes, after foaming to a certain degree, sequentially adding sepiolite wool, brucite fiber, bentonite, expanded perlite powder, polyimide, polyvinyl alcohol and organic silicon hydrophobic emulsion, stirring while adding materials, and stirring for about 40 minutes to form uniform and viscous paste slurry, thereby obtaining the rare earth composite heat-insulating material.
When the material is used, paste slurry can be used for coating construction, and after the construction of a heat insulation layer on a heat insulation body is finished, the paste slurry is coated on the surface of the heat insulation layer, so that the attractive surface and a certain waterproof protection effect are achieved.
In the embodiment, the expanded perlite is changed into perlite powder on the basis of the embodiment 1, so that the compactness of the heat-insulating material is increased, and the surface of the heat-insulating material is more exquisite and beautiful; the dosage of high-quality aluminum silicate fiber cotton and the addition of the organic silicon hydrophobic emulsion are increased, the tensile strength of the surface of the material is further improved, the cracking and pulverization of the surface of the material are avoided, and the waterproof and protective effects are better. The rare earth composite thermal insulation material is mainly coated on the thermal insulation outer surface by paste slurry, and is suitable for manufacturing a special-shaped surface protection layer which is not easy to be made into a metal protection layer.
Example 3
The embodiment provides an FBT-X3 reinforced rare earth composite thermal insulation material, which comprises the following components in parts by weight:
15 parts of aluminum silicate fiber cotton, 15 parts of sepiolite wool, 15 parts of brucite fiber, 3 parts of AEC surfactant, 3 parts of isomeric alcohol sulfonate, 10 parts of diatomite, 10 parts of cement, 20 parts of vitrified micro bubbles, 2.5 parts of polyvinyl alcohol, 1.5 parts of polyimide, 5 parts of organic silicon hydrophobic emulsion and water, wherein the adding amount of the water is 3.2 times of the sum of the weight of other raw material components.
The rare earth thermal insulation material is prepared by the following steps:
weighing the raw material components, firstly diluting AEC surfactant and isomeric alcohol sulfonate with water, adding aluminum silicate fiber cotton into the AEC surfactant and the isomeric alcohol sulfonate, soaking for more than 8 hours, putting the AEC surfactant and the isomeric alcohol sulfonate into a special spiral-flow type stirrer, stirring for about 20 minutes, after foaming to a certain degree, sequentially adding sepiolite wool, brucite fiber, kieselguhr, cement, vitrified micro bubbles, polyimide, polyvinyl alcohol and organic silicon hydrophobic emulsion, stirring while adding materials, and stirring for about 40 minutes to form uniform viscous paste slurry, thereby obtaining the rare earth composite thermal insulation material.
The rare earth composite thermal insulation material provided by the embodiment removes materials such as bentonite and expanded perlite in the formula of the embodiment 1, increases vitrified micro-beads with little water absorption and large hardness, diatomite with high activity, cement and other materials, and adds the organic silicon hydrophobic emulsion, so that the surface hardness, compressive strength and hydrophobic property of the material are greatly improved.
Example 4
The embodiment provides an FBT-X4 high-temperature rare earth composite heat-insulating material, which comprises the following components in parts by weight:
15 parts of aluminum silicate fiber cotton, 15 parts of sepiolite wool, 15 parts of brucite fiber, 3 parts of AEC surfactant, 3 parts of isomeric alcohol sulfonate, 15 parts of bentonite, 15 parts of vitrified micro-beads, 5 parts of glass micro-beads, 10 parts of nano hollow ceramic micro-beads, 2 parts of polyimide, 2 parts of rare earth inorganic high-temperature binder and water, wherein the adding amount of the water is 3 times of the sum of the weight of the raw material components.
The rare earth thermal insulation material is prepared by the following steps:
weighing the raw material components, firstly diluting AEC surfactant and isomeric alcohol sulfonate with water, adding aluminum silicate fiber cotton into the AEC surfactant and the isomeric alcohol sulfonate, soaking for more than 8 hours, putting the AEC surfactant and the isomeric alcohol sulfonate into a special spiral-flow type stirrer, stirring for about 20 minutes, after foaming to a certain degree, sequentially adding sepiolite wool, brucite fiber, bentonite, vitrified micro-beads, glass micro-beads, nano hollow ceramic micro-beads, polyimide and rare earth inorganic high-temperature binder, and stirring for about 40 minutes while adding materials to form uniform viscous paste slurry, thus obtaining the rare earth composite thermal insulation material.
On the basis of the formula in example 1, the rare earth composite thermal insulation material provided by the embodiment is added with inorganic functional materials such as vitrified micro-beads, glass micro-beads, nano hollow ceramic micro-beads and the like which have high temperature resistance and strong radiation shielding and anti-radiation capabilities, so that the high-temperature thermal insulation performance and the high-temperature strength of the rare earth composite thermal insulation material are greatly enhanced. The paste can be used for coating construction, or can be formed by a mould, then heated, dried and naturally aired to prepare plates and other sectional materials, and the plates and other sectional materials are pasted on a heat-insulated body by the paste when in use. The material is mainly suitable for the heat preservation of equipment with high temperature of more than 500 ℃ and large radiation heat dissipation, and occasions with special working condition requirements such as the thickness reduction of the heat preservation layer. Especially, the combination with the FBT-1 basic type can obtain more economical and better use effect.
The main technical parameters of each type of product are as follows:
note: "-" indicates that no detection of the relevant performance data was performed. Because the embodiments 2 and 3 are mainly used for the condition that the temperature of the heat preservation surface is not high, the detection of the high-temperature heat conductivity coefficient and the high-temperature strength data is not needed, the hydrophobic performance detection is increased, and the detection of the compressive strength is also increased according to the requirement in the embodiment 3.
The invention utilizes an orthogonal test scientific method to arrange the test, utilizes the mathematical statistics principle to analyze the test result, and repeatedly optimizes the formula and the process scheme through data analysis, thereby firstly realizing the formula and the process setting of the basic rare earth composite thermal insulation material in the embodiment 1. The basic material does not contain asbestos and OT penetrant, meets the requirement of environmental protection, has more excellent heat insulation performance and structural strength than the original FBT composite heat insulation material, and can be applied to most heat insulation working conditions and heat insulation places. On the basis of the basic model, products of examples 2 to 4 and the like having different characteristics and different uses were developed. The surface type rare earth composite thermal insulation material of the embodiment 2 is used for the outer surface of the thermal insulation layer, so that the thermal insulation surface is more attractive, the strength of the material is improved, and the material is endowed with better hydrophobic property. The high-strength rare earth composite thermal insulation material of the embodiment 3 has improved hardness and compressive strength on the basis of basic form, and is suitable for places which are trodden and bear force. The high-temperature rare earth composite thermal insulation material of the embodiment 4 can be applied to occasions with higher temperature, and can be combined with other materials for use under the high-temperature working condition, so that the thermal insulation thickness is reduced, the construction cost is reduced, and the construction process is simplified.
The composite heat-insulating material can be prepared into finished products such as plates, pipe shells, elbow shells, valve shells, pipeline supporting and hanging frames and the like by paste slurry by using a mould according to the shape and working condition requirements of a heat-insulated body, and the prefabricated sections and the finished products are adhered to the heat-insulated device by the paste slurry during field construction, so that the construction steps can be simplified, the construction efficiency can be improved, and the requirement of putting into production as soon as possible can be met.
In practical application, the composite heat-insulating material and other general materials can be utilized to design heat-insulating structures with corresponding different forms according to different equipment shapes, different working conditions and different use occasions, so that various materials are subjected to complementary and reasonable optimized combination use, the comprehensive performance of the materials is improved, and the ideal effects of better heat-insulating effect, stronger waterproof performance, lower construction cost and longer service life are achieved. The following application scenarios are specific:
1. be applied to thermal-insulated insulation construction of pipeline, cylindrical isotacticity shape equipment: if the temperature is in the medium and low temperature conditions, the FBT-X1 basic type heat insulation material is used together with the superfine glass wool material as a heat insulation layer; in case of high temperature environment, FBT-X4 high temperature type material, FBT-X1 basic type material in the middle part and superfine glass wool material in the outer part are used near the surface of the equipment. Compared with the method only using the same material, the method can reduce the thickness of the heat-insulating material, reduce the material cost, reduce the construction workload and the construction cost, reduce the heat dissipation area and further reduce the heat dissipation loss. The surface of the FBT-1 material is coated with the waterproof curing agent, the surface of the glass wool is coated with the aluminum foil, and the outermost surface of the glass wool is coated with the aluminum skin, so that a protective layer formed by a triple waterproof structure has excellent waterproof performance, the abnormal fluctuation of a heat preservation state caused by extreme weather such as rain, snow, strong wind and the like is overcome, the rapid drop of medium temperature and a large amount of heat dissipation loss are reduced, and the stable operation of production is ensured.
2. The heat-insulating structure is applied to heat-insulating structures of special-shaped equipment such as valves, heat pumps, steam turbines and the like, the internal heat-insulating layer can be the same as that of the equipment with a regular shape, and the surface of the heat-insulating structure is provided with a protective layer made of FBT-X2 surface type and magnesium steel inorganic waterproof materials.
3. Be applied to heat-insulating insulation construction that easy trample such as large-scale storage tank deck or bearing surface: the heat insulation layer is made of FBT-X3 high-strength composite heat insulation material, and the surface of the heat insulation layer is made of FBT-X2 surface type and magnesium steel inorganic waterproof material to form a protective layer, so that the overall strength and the waterproof performance of the heat insulation structure are greatly enhanced. Ensuring normal use under the treading and bearing conditions.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (9)
1. The novel FBT-X series rare earth composite thermal insulation material is characterized by being prepared from aluminum silicate fiber cotton, sepiolite velvet and brucite fiber serving as base materials, and the raw materials for preparing the rare earth composite thermal insulation material comprise the following components in parts by weight:
10-20 parts of aluminum silicate fiber cotton, 10-20 parts of sepiolite wool, 15-20 parts of brucite fiber, 20-40 parts of filler, 5-10 parts of additive, 2-4 parts of binder and water, wherein the weight of the water is 3-3.5 times of the sum of the weight of the components.
2. The rare earth composite thermal insulation material according to claim 1, wherein the filler is one or a combination of more than two of expanded perlite, expanded perlite powder, vitrified micro-beads, glass micro-beads, nano hollow ceramic micro-beads, bentonite, diatomite and cement.
3. The rare earth composite thermal insulation material of claim 1, wherein the additive is one or a combination of more than two of AEC surfactant, isomerous alcohol sulfonate and organic silicon hydrophobic emulsion.
4. The rare earth composite thermal insulation material as claimed in claim 1, wherein the binder is one or a combination of more than two of polyimide, polyvinyl alcohol and rare earth inorganic high-temperature binder.
5. The rare earth composite thermal insulation material as claimed in claim 1, wherein the FBT-X1 based composite material comprises the following components in parts by weight: 10 parts of high-quality aluminum silicate fiber cotton, 15 parts of sepiolite wool, 15 parts of brucite fiber, 20 parts of bentonite, 30 parts of expanded perlite, 3 parts of AEC surfactant, 3 parts of isomeric alcohol sulfonate, 3 parts of polyimide, 1 part of rare earth inorganic high-temperature binder and 350 parts of water.
6. The rare earth composite thermal insulation material as claimed in claim 1, wherein the FBT-X2 type composite material comprises the following components in parts by weight: 15 parts of high-quality aluminum silicate fiber cotton, 15 parts of sepiolite wool, 15 parts of brucite fiber, 17 parts of bentonite, 25 parts of expanded perlite powder, 3 parts of AEC surfactant, 3 parts of isomeric alcohol sulfonate, 1.5 parts of polyimide, 2.5 parts of polyvinyl alcohol, 3 parts of organic silicon hydrophobic emulsion and 310 parts of water.
7. The rare earth composite thermal insulation material as claimed in claim 1, wherein the FBT-X3 type composite material comprises the following components in parts by weight: 15 parts of high-quality aluminum silicate fiber cotton, 15 parts of sepiolite wool, 15 parts of brucite fiber, 10 parts of diatomite, 12 parts of cement, 20 parts of vitrified micro-beads, 3 parts of AEC surfactant, 3 parts of isomeric alcohol sulfonate, 1.5 parts of polyimide, 2.5 parts of polyvinyl alcohol, 3 parts of organic silicon hydrophobic emulsion and 320 parts of water.
8. The rare earth composite thermal insulation material as claimed in claim 1, wherein the FBT-X4 type composite material comprises the following components in parts by weight: 15 parts of high-quality aluminum silicate fiber cotton, 15 parts of sepiolite wool, 15 parts of brucite fiber, 15 parts of bentonite, 15 parts of vitrified micro-beads, 5 parts of glass micro-beads, 10 parts of nano hollow ceramic micro-beads, 3 parts of AEC surfactant, 3 parts of isomeric alcohol sulfonate, 2 parts of polyimide, 2 parts of rare earth inorganic high-temperature adhesive and 300 parts of water.
9. The method for preparing rare earth composite thermal insulation material according to any one of claims 6 to 8, characterized by comprising the steps of:
and (3) adding the diluted AEC surfactant and the isomeric alcohol sulfonate into aluminum silicate fiber cotton for soaking, stirring, adding other raw materials after foaming to a certain degree, and uniformly stirring to obtain the rare earth composite heat-insulating material.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112521058A (en) * | 2020-11-19 | 2021-03-19 | 中猫科技有限公司 | Honeycomb structure ceramic thermal insulation composite material and manufacturing method thereof |
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