CN117303918A - Binding repair sizing material for refractory material and preparation method and application thereof - Google Patents
Binding repair sizing material for refractory material and preparation method and application thereof Download PDFInfo
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- 230000008439 repair process Effects 0.000 title claims abstract description 58
- 239000000463 material Substances 0.000 title claims abstract description 38
- 239000011819 refractory material Substances 0.000 title claims abstract description 37
- 238000004513 sizing Methods 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title description 11
- 239000000835 fiber Substances 0.000 claims abstract description 206
- 239000000919 ceramic Substances 0.000 claims abstract description 184
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 41
- 239000002270 dispersing agent Substances 0.000 claims abstract description 35
- 238000004062 sedimentation Methods 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000007767 bonding agent Substances 0.000 claims abstract description 20
- 238000003756 stirring Methods 0.000 claims description 31
- 229920002401 polyacrylamide Polymers 0.000 claims description 30
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical group OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 28
- 125000002091 cationic group Chemical group 0.000 claims description 24
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical group O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 21
- 239000000843 powder Substances 0.000 claims description 17
- 238000002156 mixing Methods 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 14
- 150000001875 compounds Chemical class 0.000 claims description 13
- 239000011230 binding agent Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 238000011049 filling Methods 0.000 claims description 3
- 230000002528 anti-freeze Effects 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 abstract description 14
- 239000000853 adhesive Substances 0.000 abstract description 13
- 238000005336 cracking Methods 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 17
- 239000000243 solution Substances 0.000 description 14
- 238000012360 testing method Methods 0.000 description 14
- 229910052814 silicon oxide Inorganic materials 0.000 description 9
- -1 silicon oxide ions Chemical class 0.000 description 9
- 238000003860 storage Methods 0.000 description 8
- 238000010276 construction Methods 0.000 description 7
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 5
- 230000001050 lubricating effect Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010998 test method Methods 0.000 description 5
- 150000001450 anions Chemical class 0.000 description 4
- 239000002585 base Substances 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 238000004040 coloring Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
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- 229920004933 Terylene® Polymers 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000035515 penetration Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
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- 239000005020 polyethylene terephthalate Substances 0.000 description 1
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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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/632—Organic additives
- C04B35/634—Polymers
- C04B35/63404—Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B35/63444—Nitrogen-containing polymers, e.g. polyacrylamides, polyacrylonitriles, polyvinylpyrrolidone [PVP], polyethylenimine [PEI]
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/71—Ceramic products containing macroscopic reinforcing agents
- C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
- C04B35/80—Fibres, filaments, whiskers, platelets, or the like
- C04B35/83—Carbon fibres in a carbon matrix
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
- D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
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Abstract
The invention discloses a bonding repair sizing material for refractory materials, which comprises the following components: 20-40 parts of ceramic fiber A, 20-50 parts of ceramic fiber A, 1-20 parts of ceramic fiber B, 10-20 parts of ceramic fiber B, 50-100 parts of bonding agent, 5-10 parts of dispersing agent, 5-15 parts of antifreezing agent and 20-40 parts of water; the diameters of the ceramic fiber A1 and the ceramic fiber A2 are 4-5 mu m, and the diameters of the ceramic fiber B1 and the ceramic fiber B2 are 1-3 mu m; the sedimentation coefficient of the ceramic fiber A1 is 20-30cm, the sedimentation coefficient of the ceramic fiber A2 is 60-70cm, the sedimentation coefficient of the ceramic fiber B1 is 40-50cm, and the sedimentation coefficient of the ceramic fiber B2 is 90-100cm. The cost is low, the strength is high, the toughness is high, the details are full, the shrinkage rate is close to that of the blank product at high temperature, the phenomenon of falling off or cracking is not easy to occur when the adhesive is used at high temperature.
Description
Technical Field
The invention relates to the technical field of refractory material products, in particular to a bonding repair sizing material for a refractory material, a preparation method and application thereof.
Background
The refractory material product is required to be repaired in the manufacturing process, the refractory material is often subjected to falling or cracking phenomenon when in use, once the refractory material is defective, the damage speed of the defective or cracked part is increased under the action of heat flow, and finally the whole refractory material product is damaged, so that the refractory material is required to be repaired by using the bonding repair material regularly when in use.
Ceramic fiber is used as a light refractory heat-insulating fiber, and has the characteristics of refractory heat insulation, light weight and the like.
The ceramic fiber product needs to be repaired by using the adhesive repairing material in the manufacturing and using processes, but the adhesive repairing material in the prior art has the following defects in use:
(1) The repairing adhesive made of inorganic powder is different from ceramic fiber in material and has different shrinkage at high temperature, so that cracking easily occurs in later use, the drying time after repairing is long, the repairing thickness is limited and cannot be too thick, otherwise, the repairing adhesive is easy to crack, the surface after repairing is too hard, and the repairing adhesive effect is poor again;
(2) The repair binder made of ceramic fiber has short product storage time, and the shrinkage rate of the repair fiber and the original fiber blank product are not treated in a targeted way, so that the repair fiber is easy to fall off or crack with the original fiber blank product when being used at high temperature;
(3) The repairing adhesive is prepared by mixing inorganic powder and ceramic fiber, and the repairing adhesive has high repairing strength and toughness, but has low construction convenience, high repairing strength, high temperature and blank combining degree.
The three repair adhesives have the main disadvantages that: the preservation time is short, the use is inconvenient, and the repair is easy to fall off or crack with the proembryo due to the too large difference between the repair and the proembryo shrinkage when the repair is used at high temperature.
Disclosure of Invention
In order to solve the problems in the background technology, the invention provides a bonding repair sizing material for refractory materials, which has the characteristics of low cost, high strength, high toughness, full detail, close to the high-temperature shrinkage rate of a blank product, difficult falling or cracking phenomenon during high-temperature use and convenient use. Therefore, the invention also provides a preparation method and application of the bonding repair sizing material for the refractory material.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the invention provides a bonding repair sizing material for refractory materials, which comprises the following components in parts by weight:
20-40 parts of ceramic fiber A, 20-50 parts of ceramic fiber A, 1-20 parts of ceramic fiber B, 10-20 parts of ceramic fiber B, 50-100 parts of bonding agent, 5-10 parts of dispersing agent, 5-15 parts of antifreezing agent and 20-40 parts of water;
the diameters of the ceramic fiber A1 and the ceramic fiber A2 are 4-5 mu m, and the diameters of the ceramic fiber B1 and the ceramic fiber B2 are 1-3 mu m;
the sedimentation coefficient of the ceramic fiber A1 is 20-30cm, the sedimentation coefficient of the ceramic fiber A2 is 60-70cm, the sedimentation coefficient of the ceramic fiber B1 is 40-50cm, and the sedimentation coefficient of the ceramic fiber B2 is 90-100cm.
The technical scheme is adopted:
the ceramic fiber is an inorganic high-temperature resistant material, and generally has two production modes, namely wire throwing production and blowing production, wherein the ceramic fiber produced in the wire throwing mode is thicker, the wire diameter is generally 4-5um, and the ceramic fiber produced in the blowing mode is thinner, and the wire diameter is generally 1-3um.
In the application, the ceramic fiber A1 and the ceramic fiber A2 are produced and processed in a yarn throwing mode in the prior art, and the diameter of the ceramic fiber A1 and the ceramic fiber A2 is 4-5 mu m; the ceramic fiber B1 and the ceramic fiber B2 are produced and processed by adopting a blowing mode in the prior art, and the diameter of the ceramic fiber B1 is 1-3 mu m.
In addition, the prepared ceramic fiber can be chopped to control the fiber length within a certain range, the fiber length is generally measured by an index of sedimentation coefficient, and the method is a professional method for measuring the total length range of the fiber in the industry, and the sedimentation coefficient is measured by the following steps: mixing chopped fiber and aqueous solution according to a fixed proportion, stirring in a fixed mode, pouring into a long measuring cup, and measuring the sedimentation height of the chopped fiber in the aqueous solution after fixed time.
In this application, select out the ceramic fiber mix complex of four kinds of different thickness, different length, cross between the fibre is piled up during the shaping to it is abundant to fill, make product intensity higher, toughness good, the detail is fuller, and when using, according to the fibre grade and the high temperature shrinkage adjustment of waiting to repair the target product four kinds of ceramic fiber's in this application, so that this bonding repair sizing material and the high temperature shrinkage of target product match more, thereby reduce the risk that leads to repairing the fracture because of the shrinkage difference of two when high temperature. The ceramic fibers may also be calcined in advance to reduce the high temperature shrinkage of the ceramic fibers so that the shrinkage of the bond repair compound more closely approximates the high temperature shrinkage of the target article.
Specifically, the bonding agent is a silica sol solution.
Specifically, the solid content of the silica sol solution is 30%, the pH is 8-11, and the particle size of the colloidal particles is 15nm.
The nanometer silica sol is a good surface curing agent and film forming agent, and silicon oxide ions in the silica sol can migrate to the surface layer to form a net structure after being dried, so that the sufficient appearance strength is generated.
Specifically, the dispersing agent is cationic polyacrylamide powder.
Specifically, the molecular weight of polyacrylamide in the cationic polyacrylamide powder is 800 ten thousand.
The cationic polyacrylamide has the functions of adhesion and lubrication, when the cationic polyacrylamide is used, a small amount of water is mixed, the cationic polyacrylamide is highly viscous, and the cationic polyacrylamide is attached to the surface of ceramic fibers to form an ionic layer, so that the fibers repel each other due to the action of single charges, the ceramic fibers can be effectively stretched, the ceramic fibers are prevented from forming curled particles, the interlacing degree of the fibers in a formed product is improved, the toughness of the product is improved, the polyacrylamide is cationic, silicon oxide ions in a silica sol solution are anions, and the anions are adsorbed, so that the silicon oxide ions can be uniformly adsorbed on the ceramic fibers, and the strength of the inside of the simulation false material is increased. And the added cationic polyacrylamide powder has a lubricating effect, so that the construction is convenient.
Specifically, the antifreezing agent is industrial grade glycol.
The ethylene glycol can be industrial grade ethylene glycol or terylene grade ethylene glycol, and can prevent moisture from volatilizing, so that the storage period of the bonding material is long, the product is kept moist, and the construction is convenient.
In a second aspect of the present invention, a method for preparing the bonding repair compound for refractory materials is provided, comprising the steps of:
s1, weighing ceramic fiber A1, ceramic fiber A2, ceramic fiber B1, ceramic fiber B2, bonding agent, dispersing agent, antifreezing agent and water according to the formula amount;
s2, firstly adding an antifreezing agent into a stirring container, adding a dispersing agent into the stirring container in a stirring state, and fully and uniformly mixing the antifreezing agent and the dispersing agent to obtain a viscous liquid;
s3, adding the binding agent and water, and continuously stirring and uniformly mixing;
and S4, finally adding the ceramic fiber A1, the ceramic fiber A2, the ceramic fiber B1 and the ceramic fiber B2, and stirring into a paste to obtain a finished product.
In a third aspect of the invention, there is provided the use of the above-described bonding repair compound for refractory materials for repairing ceramic fiber-based refractory products and filling gaps.
The adhesive repair sizing material can be used for repairing and bonding various ceramic fiber products and other refractory materials, and can fill gaps.
Compared with the prior art, the invention has the following beneficial effects:
(1) The ceramic fiber composite material has the advantages of excellent high temperature resistance, low cost, acid and alkali resistance, high temperature resistance, direct application to open flame and no generation of peculiar smell;
(2) According to the invention, the product adopts a scheme of mixing four ceramic fibers with different thicknesses and lengths according to a specific proportion, and the fibers are stacked in a crossing way and fully filled during molding, so that the product has better strength, high toughness and full detail, and the prepared bonding repair sizing material is close to the high-temperature shrinkage rate of a blank product, and is not easy to fall off or crack during high-temperature use;
(3) The product formula is added with nanoscale silica sol which is used as a good surface curing agent and a film forming agent, and silicon oxide ions in the silica sol can migrate to a surface layer to form a net structure after being dried, so that the product has enough appearance strength and also has the function of high temperature resistance;
(4) The cationic polyacrylamide is added into the product formula to have the bonding and lubricating effects, when the product is used, a small amount of water is mixed, the product has great viscosity, and an ionic layer is formed on the surface of ceramic fibers by attaching the product to the surface of the ceramic fibers, so that the fibers are mutually repelled due to the effect of single charge, the ceramic fibers can be effectively stretched, the ceramic fibers are prevented from forming curled particles, the interlacing degree of the fibers in a formed product is improved, the toughness of the product is improved, the polyacrylamide is cationic, the silicon oxide ions in the silica sol solution are anions, the positive and negative ions are adsorbed, the silicon oxide ions can be uniformly adsorbed on the ceramic fibers, the strength inside the simulation false material is improved, and the added cationic polyacrylamide powder has the lubricating effect, so that the construction is facilitated;
(5) The ethylene glycol is added into the product formula, so that the storage period of the adhesive repair sizing material can be obviously prolonged, the product can be kept moist, and the construction is convenient.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The bonding repair sizing material for the refractory material comprises the following components:
20 parts of ceramic fiber A1, 41 parts of ceramic fiber A2, 1 part of ceramic fiber B13, 2 parts of ceramic fiber B2, 72 parts of bonding agent, 7 parts of dispersing agent, 8 parts of antifreezing agent and 27 parts of water;
the diameters of the ceramic fiber A1 and the ceramic fiber A2 are 4-5 mu m, and the diameters of the ceramic fiber B1 and the ceramic fiber B2 are 1-3 mu m;
the sedimentation coefficient of the ceramic fiber A1 is 20-30cm, the sedimentation coefficient of the ceramic fiber A2 is 60-70cm, the sedimentation coefficient of the ceramic fiber B1 is 40-50cm, and the sedimentation coefficient of the ceramic fiber B2 is 90-100cm.
The bonding agent is silica sol solution, the solid content of the silica sol solution is 30%, the pH is 8-11, and the particle size of the colloidal particles is 15nm.
The dispersing agent is cationic polyacrylamide powder, and the molecular weight of polyacrylamide in the cationic polyacrylamide powder is 800 ten thousand.
The antifreezing agent is industrial grade glycol.
The preparation method of the bonding repair sizing material for the refractory material comprises the following steps:
s1, weighing ceramic fiber A1, ceramic fiber A2, ceramic fiber B1, ceramic fiber B2, bonding agent, dispersing agent, antifreezing agent and water according to the formula amount;
s2, firstly adding an antifreezing agent into a stirring container, adding a dispersing agent into the stirring container in a stirring state, and fully and uniformly mixing the antifreezing agent and the dispersing agent to obtain a viscous liquid;
s3, adding the binding agent and water, and continuously stirring and uniformly mixing;
and S4, finally adding the ceramic fiber A1, the ceramic fiber A2, the ceramic fiber B1 and the ceramic fiber B2, and stirring into a paste to obtain a finished product.
Example 2
The bonding repair sizing material for the refractory material comprises the following components:
27 parts of ceramic fiber A1, 50 parts of ceramic fiber A2, 1 part of ceramic fiber B10, 2 parts of ceramic fiber B18, 50 parts of bonding agent, 5 parts of dispersing agent, 5 parts of antifreezing agent and 20 parts of water;
the diameters of the ceramic fiber A1 and the ceramic fiber A2 are 4-5 mu m, and the diameters of the ceramic fiber B1 and the ceramic fiber B2 are 1-3 mu m;
the sedimentation coefficient of the ceramic fiber A1 is 20-30cm, the sedimentation coefficient of the ceramic fiber A2 is 60-70cm, the sedimentation coefficient of the ceramic fiber B1 is 40-50cm, and the sedimentation coefficient of the ceramic fiber B2 is 90-100cm.
The bonding agent is silica sol solution, the solid content of the silica sol solution is 30%, the pH is 8-11, and the particle size of the colloidal particles is 15nm.
The dispersing agent is cationic polyacrylamide powder, and the molecular weight of polyacrylamide in the cationic polyacrylamide powder is 800 ten thousand.
The antifreezing agent is industrial grade glycol.
The preparation method of the bonding repair sizing material for the refractory material comprises the following steps:
s1, weighing ceramic fiber A1, ceramic fiber A2, ceramic fiber B1, ceramic fiber B2, bonding agent, dispersing agent, antifreezing agent and water according to the formula amount;
s2, firstly adding an antifreezing agent into a stirring container, adding a dispersing agent into the stirring container in a stirring state, and fully and uniformly mixing the antifreezing agent and the dispersing agent to obtain a viscous liquid;
s3, adding the binding agent and water, and continuously stirring and uniformly mixing;
and S4, finally adding the ceramic fiber A1, the ceramic fiber A2, the ceramic fiber B1 and the ceramic fiber B2, and stirring into a paste to obtain a finished product.
Example 3
The bonding repair sizing material for the refractory material comprises the following components:
35 parts of ceramic fiber A1, 37 parts of ceramic fiber A2, 1 part of ceramic fiber B20, 2 parts of ceramic fiber B14, 87 parts of bonding agent, 8 parts of dispersing agent, 15 parts of antifreezing agent and 31 parts of water;
the diameters of the ceramic fiber A1 and the ceramic fiber A2 are 4-5 mu m, and the diameters of the ceramic fiber B1 and the ceramic fiber B2 are 1-3 mu m;
the sedimentation coefficient of the ceramic fiber A1 is 20-30cm, the sedimentation coefficient of the ceramic fiber A2 is 60-70cm, the sedimentation coefficient of the ceramic fiber B1 is 40-50cm, and the sedimentation coefficient of the ceramic fiber B2 is 90-100cm.
The bonding agent is silica sol solution, the solid content of the silica sol solution is 30%, the pH is 8-11, and the particle size of the colloidal particles is 15nm.
The dispersing agent is cationic polyacrylamide powder, and the molecular weight of polyacrylamide in the cationic polyacrylamide powder is 800 ten thousand.
The antifreezing agent is industrial grade glycol.
The preparation method of the bonding repair sizing material for the refractory material comprises the following steps:
s1, weighing ceramic fiber A1, ceramic fiber A2, ceramic fiber B1, ceramic fiber B2, bonding agent, dispersing agent, antifreezing agent and water according to the formula amount;
s2, firstly adding an antifreezing agent into a stirring container, adding a dispersing agent into the stirring container in a stirring state, and fully and uniformly mixing the antifreezing agent and the dispersing agent to obtain a viscous liquid;
s3, adding the binding agent and water, and continuously stirring and uniformly mixing;
and S4, finally adding the ceramic fiber A1, the ceramic fiber A2, the ceramic fiber B1 and the ceramic fiber B2, and stirring into a paste to obtain a finished product.
Example 4
The bonding repair sizing material for the refractory material comprises the following components:
40 parts of ceramic fiber A1, 20 parts of ceramic fiber A2, 1 part of ceramic fiber B17, 2 parts of ceramic fiber B10, 100 parts of binding agent, 10 parts of dispersing agent, 12 parts of antifreezing agent and 40 parts of water;
the diameters of the ceramic fiber A1 and the ceramic fiber A2 are 4-5 mu m, and the diameters of the ceramic fiber B1 and the ceramic fiber B2 are 1-3 mu m;
the sedimentation coefficient of the ceramic fiber A1 is 20-30cm, the sedimentation coefficient of the ceramic fiber A2 is 60-70cm, the sedimentation coefficient of the ceramic fiber B1 is 40-50cm, and the sedimentation coefficient of the ceramic fiber B2 is 90-100cm.
The bonding agent is silica sol solution, the solid content of the silica sol solution is 30%, the pH is 8-11, and the particle size of the colloidal particles is 15nm.
The dispersing agent is cationic polyacrylamide powder, and the molecular weight of polyacrylamide in the cationic polyacrylamide powder is 800 ten thousand.
The antifreezing agent is industrial grade glycol.
The preparation method of the bonding repair sizing material for the refractory material comprises the following steps:
s1, weighing ceramic fiber A1, ceramic fiber A2, ceramic fiber B1, ceramic fiber B2, bonding agent, dispersing agent, antifreezing agent and water according to the formula amount;
s2, firstly adding an antifreezing agent into a stirring container, adding a dispersing agent into the stirring container in a stirring state, and fully and uniformly mixing the antifreezing agent and the dispersing agent to obtain a viscous liquid;
s3, adding the binding agent and water, and continuously stirring and uniformly mixing;
and S4, finally adding the ceramic fiber A1, the ceramic fiber A2, the ceramic fiber B1 and the ceramic fiber B2, and stirring into a paste to obtain a finished product.
Comparative example 1
Comparative example 1 is a comparative test example of example 1, and the comparative example 1 differs from example 1 in that: the bonding repair sizing for the refractory material in comparative example 1 comprises the following components: 37 parts of ceramic fiber A1, 57 parts of ceramic fiber A2, 72 parts of binding agent, 7 parts of dispersing agent, 8 parts of antifreezing agent and 27 parts of water. The selection of the components and the preparation process are the same as in example 1.
Comparative example 2
Comparative example 2 is a comparative test example of example 1, and the comparative example 2 differs from example 1 in that: the bonding repair sizing for the refractory material in comparative example 2 comprises the following components: 20 parts of ceramic fiber A1, 41 parts of ceramic fiber A2, 1 part of ceramic fiber B13, 2 parts of ceramic fiber B20, 72 parts of bonding agent, 8 parts of antifreezing agent and 27 parts of water. The selection of the components and the preparation process are the same as in example 1.
Comparative example 3
Comparative example 3 is a comparative test example of example 1, and comparative example 3 differs from example 1 in that: the bonding repair sizing for the refractory material in comparative example 3 comprises the following components: 20 parts of ceramic fiber A1, 41 parts of ceramic fiber A2, 1 part of ceramic fiber B13, 2 parts of ceramic fiber B20, 72 parts of bonding agent, 7 parts of dispersing agent and 27 parts of water. The selection of the components and the preparation process are the same as in example 1.
The following performance tests were conducted on the bonding repair compounds for refractory materials prepared in examples 1 to 4 and comparative examples 1 to 3:
1. filling plasticity: the test method is a manual test, when the standard requires repair operation, the material can be lubricated and filled, and the plastic energy of the surface can be corrected;
2. drying and curing speed: the testing method is that the time for curing the testing material is short under two states of natural air drying curing and heating curing;
3. post-repair strength: the testing method is to adopt visual inspection or hand pulling test to detect the bonding firmness after curing;
4. repair details: the test method is that the appearance is manually polished, visually inspected and soaked, dried, the surface detail is required to be repaired, the surface detail can be close to the base part, polishing correction can be carried out, and coloring can be carried out, so that the appearance of the base part is not influenced;
5. high temperature resistance after repair: the testing method is that when the liquefied gas stove is burned for 2 hours under a big fire, the repairing part is required to be resistant to high temperature and true fire, and the liquefied gas stove is not cracked after burning;
6. storage performance: the test method is that a, the test method is opened for 3 days at normal temperature to see whether the test is hardened or not, and b, the test method is that the test is sealed for 3 months at normal temperature to see whether the test is hardened or not.
The specific test results are shown in Table 1.
TABLE 1
As shown in the test results in Table 1, the bonding repair compound for refractory materials prepared in examples 1 to 4 is easy to repair, easy to dry and cure, and firm in combination with the base member after curing, good in surface strength of the repair part, but capable of polishing and correcting, capable of coloring, free of influencing the appearance of the base member, high-temperature resistant and fire resistant in the repair part, convenient to store and long in storage time when repairing ceramic fiber products. By setting the comparative examples 1-3, it can be demonstrated that the addition of the dispersing agent and the antifreezing agent can improve the lubricity and cohesiveness of the adhesive repair compound in use; the antifreezing agent has a certain influence on the natural drying and curing speed of the bonding repair sizing material, but has little influence; when no dispersant is added, the fibers are easy to agglomerate (the fibers cannot be fully dispersed and crossed), so that the follow-up polishing and coloring (too much penetration) of the bonding repair sizing material are affected, and the strength at high temperature is affected, and the bonding repair sizing material is easy to crack after burning; the addition of the antifreezing agent can reduce volatilization of the adhesive repair sizing material during storage and increase storage period.
In conclusion, the bonding repair sizing material disclosed by the invention takes ceramic fibers as raw materials, has excellent high-temperature resistance, is low in cost, acid and alkali resistant and high-temperature resistant, can be directly used on open flame, and has no peculiar smell; the product adopts a scheme of mixing four ceramic fibers with different thicknesses and lengths according to a specific proportion, and when in molding, the fibers are stacked in a crossing way and fully filled, so that the product has better strength, high toughness and full detail, and the prepared bonding repair sizing material is close to the high-temperature shrinkage rate of a blank product and is not easy to fall off or crack when in use at high temperature; the product formula is added with nanoscale silica sol which is used as a good surface curing agent and a film forming agent, and silicon oxide ions in the silica sol can migrate to a surface layer to form a net structure after being dried, so that the product has enough appearance strength and also has the function of high temperature resistance; the cationic polyacrylamide is added into the product formula to have the bonding and lubricating effects, when the product is used, a small amount of water is mixed, the product has great viscosity, and an ionic layer is formed on the surface of ceramic fibers by attaching the product to the surface of the ceramic fibers, so that the fibers are mutually repelled due to the effect of single charge, the ceramic fibers can be effectively stretched, the ceramic fibers are prevented from forming curled particles, the interlacing degree of the fibers in a formed product is improved, the toughness of the product is improved, the polyacrylamide is cationic, the silicon oxide ions in the silica sol solution are anions, the positive and negative ions are adsorbed, the silicon oxide ions can be uniformly adsorbed on the ceramic fibers, the strength inside the simulation false material is improved, and the added cationic polyacrylamide powder has the lubricating effect, so that the construction is facilitated; the ethylene glycol is added into the product formula, so that the storage period of the adhesive repair sizing material can be obviously prolonged, the product can be kept moist, and the construction is convenient.
The foregoing description of the invention has been presented for purposes of illustration and description, and is not intended to be limiting. Several simple deductions, modifications or substitutions may also be made by a person skilled in the art to which the invention pertains, based on the idea of the invention.
Claims (8)
1. The bonding repair sizing material for the refractory material is characterized by comprising the following components in parts by weight:
20-40 parts of ceramic fiber A, 20-50 parts of ceramic fiber A, 1-20 parts of ceramic fiber B, 10-20 parts of ceramic fiber B, 50-100 parts of bonding agent, 5-10 parts of dispersing agent, 5-15 parts of antifreezing agent and 20-40 parts of water;
the diameters of the ceramic fiber A1 and the ceramic fiber A2 are 4-5 mu m, and the diameters of the ceramic fiber B1 and the ceramic fiber B2 are 1-3 mu m;
the sedimentation coefficient of the ceramic fiber A1 is 20-30cm, the sedimentation coefficient of the ceramic fiber A2 is 60-70cm, the sedimentation coefficient of the ceramic fiber B1 is 40-50cm, and the sedimentation coefficient of the ceramic fiber B2 is 90-100cm.
2. The bonding repair compound for refractory materials according to claim 1, wherein the bonding agent is a silica sol solution.
3. The bonding repair compound for refractory materials according to claim 2, wherein the silica sol solution has a solid content of 30%, a pH of 8 to 11 and a colloidal particle size of 15nm.
4. The bonding repair compound for refractory materials according to claim 1, wherein the dispersant is cationic polyacrylamide powder.
5. The bonding repair compound for refractory materials according to claim 4, wherein the molecular weight of polyacrylamide in the cationic polyacrylamide powder is 800 ten thousand.
6. The bonding repair compound for refractory materials according to claim 1, wherein the antifreeze is ethylene glycol.
7. A method of preparing the bonding repair compound for refractory materials according to claim 1, comprising the steps of:
s1, weighing ceramic fiber A1, ceramic fiber A2, ceramic fiber B1, ceramic fiber B2, bonding agent, dispersing agent, antifreezing agent and water according to the formula amount;
s2, firstly adding an antifreezing agent into a stirring container, adding a dispersing agent into the stirring container in a stirring state, and fully and uniformly mixing the antifreezing agent and the dispersing agent to obtain a viscous liquid;
s3, adding the binding agent and water, and continuously stirring and uniformly mixing;
and S4, finally adding the ceramic fiber A1, the ceramic fiber A2, the ceramic fiber B1 and the ceramic fiber B2, and stirring into a paste to obtain a finished product.
8. Use of the bonding repair compound for refractory materials according to claim 1, characterized in that it is used for repairing ceramic fiber-based refractory products and filling gaps.
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