CN115627118B - Ball valve casting and processing technology thereof - Google Patents
Ball valve casting and processing technology thereof Download PDFInfo
- Publication number
- CN115627118B CN115627118B CN202211324130.1A CN202211324130A CN115627118B CN 115627118 B CN115627118 B CN 115627118B CN 202211324130 A CN202211324130 A CN 202211324130A CN 115627118 B CN115627118 B CN 115627118B
- Authority
- CN
- China
- Prior art keywords
- parts
- ball valve
- valve casting
- coating
- resistant coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005266 casting Methods 0.000 title claims abstract description 72
- 238000012545 processing Methods 0.000 title abstract description 21
- 238000005516 engineering process Methods 0.000 title abstract description 19
- 239000011248 coating agent Substances 0.000 claims abstract description 79
- 238000000576 coating method Methods 0.000 claims abstract description 79
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 68
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 30
- 239000000919 ceramic Substances 0.000 claims abstract description 25
- 239000000835 fiber Substances 0.000 claims abstract description 25
- 239000010445 mica Substances 0.000 claims abstract description 25
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 25
- NZIOVLXULSCCSG-UHFFFAOYSA-N [2-(dimethylcarbamoyl)phenyl]boronic acid Chemical compound CN(C)C(=O)C1=CC=CC=C1B(O)O NZIOVLXULSCCSG-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 22
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 22
- RZURDERFVOUZFX-UHFFFAOYSA-N 3-(2-fluorophenyl)propanal Chemical compound FC1=CC=CC=C1CCC=O RZURDERFVOUZFX-UHFFFAOYSA-N 0.000 claims abstract description 20
- PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 claims abstract description 16
- 238000003756 stirring Methods 0.000 claims description 34
- 239000000839 emulsion Substances 0.000 claims description 24
- 238000002156 mixing Methods 0.000 claims description 23
- 229920001909 styrene-acrylic polymer Polymers 0.000 claims description 23
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 19
- RPQRDASANLAFCM-UHFFFAOYSA-N oxiran-2-ylmethyl prop-2-enoate Chemical compound C=CC(=O)OCC1CO1 RPQRDASANLAFCM-UHFFFAOYSA-N 0.000 claims description 18
- PXHIYFMTRHEUHZ-UHFFFAOYSA-N 5-hydroxy-2-benzofuran-1,3-dione Chemical compound OC1=CC=C2C(=O)OC(=O)C2=C1 PXHIYFMTRHEUHZ-UHFFFAOYSA-N 0.000 claims description 17
- 150000001412 amines Chemical class 0.000 claims description 16
- 229920002554 vinyl polymer Polymers 0.000 claims description 16
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 13
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 13
- 239000007921 spray Substances 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims description 10
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical group NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 claims description 8
- 229960001124 trientine Drugs 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 230000003749 cleanliness Effects 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000005488 sandblasting Methods 0.000 claims description 5
- 230000003746 surface roughness Effects 0.000 claims description 5
- 238000004381 surface treatment Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims 2
- 238000003754 machining Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000007795 chemical reaction product Substances 0.000 abstract description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 abstract description 3
- 229910002808 Si–O–Si Inorganic materials 0.000 abstract description 3
- 230000002378 acidificating effect Effects 0.000 abstract description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 abstract description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 239000000047 product Substances 0.000 description 21
- 230000000052 comparative effect Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical group CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- GOUHYARYYWKXHS-UHFFFAOYSA-N 4-formylbenzoic acid Chemical group OC(=O)C1=CC=C(C=O)C=C1 GOUHYARYYWKXHS-UHFFFAOYSA-N 0.000 description 2
- HUMNYLRZRPPJDN-UHFFFAOYSA-N benzaldehyde Chemical compound O=CC1=CC=CC=C1 HUMNYLRZRPPJDN-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000008199 coating composition Substances 0.000 description 2
- 239000003995 emulsifying agent Substances 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 150000002430 hydrocarbons Chemical group 0.000 description 2
- 239000003999 initiator Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- HXITXNWTGFUOAU-UHFFFAOYSA-N phenylboronic acid Chemical group OB(O)C1=CC=CC=C1 HXITXNWTGFUOAU-UHFFFAOYSA-N 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 229920003169 water-soluble polymer Polymers 0.000 description 2
- FEPBITJSIHRMRT-UHFFFAOYSA-N 4-hydroxybenzenesulfonic acid Chemical group OC1=CC=C(S(O)(=O)=O)C=C1 FEPBITJSIHRMRT-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QNGNSVIICDLXHT-UHFFFAOYSA-N para-ethylbenzaldehyde Natural products CCC1=CC=C(C=O)C=C1 QNGNSVIICDLXHT-UHFFFAOYSA-N 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/02—Polysilicates
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0657—Particular coverings or materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Paints Or Removers (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The application relates to a ball valve casting, wherein the surface of the ball valve casting is coated with a high-temperature-resistant coating, and the coating components of the high-temperature-resistant coating comprise tetraethoxysilane, 2- (dimethylcarbamoyl) phenylboronic acid, 3- (2-fluorophenyl) propanal, palladium chloride, mica, ceramic fibers, sodium silicate, glycol, toluene, a curing agent and water; and also relates to a processing technology of the ball valve casting. In the application, the tetraethoxysilane takes Si-O-Si as a main chain, so that the silicon-oxygen bond energy is large, and the high temperature resistance is strong; the reaction product of 2- (dimethylcarbamoyl) phenylboronic acid and 3- (2-fluorophenyl) propanal extends outwards through a phenyl ring-shaped large pi bond structure, and firm C-F bonds are introduced, so that the silicon-oxygen bond is not easy to attack, and the chain stability is higher; under the acidic condition, the hydroxyl of the reaction product is cooperated with ethylene glycol and tetraethoxysilane to generate modified polyethyl silicate, so that the toughness of the organic silicon coating is improved; mica and ceramic fiber are added to reduce the heat conductivity and improve the high temperature resistance.
Description
Technical Field
The application relates to the technical field of valve casting processing, in particular to a ball valve casting and a processing technology thereof.
Background
The valve casting is a control component in a pipeline fluid conveying system, and the valve is used for changing the section of a passage and the flow direction of a medium and has the functions of diversion, cut-off, adjustment, throttling, check, diversion, overflow pressure relief and the like; conventional ball valve castings include a valve body and a valve cover.
Chinese patent publication No. CN104976401a discloses a ball valve casting, which includes a valve body and a valve cover. The valve body is provided with a first through hole which is sequentially divided into a first round hole section, a second round hole section, a first inner spherical section and a third round hole section from one end to the other end; the valve cover is provided with a second through hole, the second through hole is sequentially divided into a second inner spherical surface section, a fourth round hole section and a fifth round hole section from one end to the other end, and the fourth round hole section and the fifth round hole section are concentrically arranged.
With respect to the related art as described above, the inventors consider that the current ball valve castings cannot be applied to severe high temperature environments, and thus there is still a need for improvement.
Disclosure of Invention
In order to improve the high temperature resistance of the ball valve casting, the application provides the ball valve casting and the processing technology thereof.
In a first aspect, the present application provides a ball valve casting that adopts the following technical scheme:
the ball valve casting is coated with a high-temperature-resistant coating on the surface, and the high-temperature-resistant coating comprises the following coating components in parts by weight:
40-50 parts of ethyl orthosilicate;
12-15 parts of 2- (dimethylcarbamoyl) phenylboronic acid;
6-8 parts of 3- (2-fluorophenyl) propanal;
1-2 parts of palladium chloride;
2-4 parts of mica;
1-2 parts of ceramic fiber;
1-2 parts of sodium silicate;
8-10 parts of ethylene glycol;
3-5 parts of toluene;
1-2 parts of curing agent;
30-40 parts of water.
By adopting the technical scheme, the tetraethoxysilane takes Si-O-Si as a main chain, so that the silicon-oxygen bond energy is large, the high temperature resistance is strong, the silicon-oxygen bond electronegativity difference is large, the polarity of the bond is large, the shielding effect on the hydrocarbon group can be realized, and the oxidation stability is improved; 2- (dimethylcarbamoyl) phenylboronic acid and 3- (2-fluorophenyl) propanal are mixed with tetraethoxysilane, and the phenyl ring-shaped large pi bond structure is stretched outwards, and meanwhile, a firm C-F bond is introduced, so that the silicon-oxygen bond of the organosilicon is not easy to attack, the chain stability is higher, a synergistic effect is generated, and the high-temperature resistance is improved; in addition, under the acidic condition, the reaction product of the 2- (dimethylcarbamoyl) phenylboronic acid and the 3- (2-fluorophenyl) propanal forms hydroxyl, and the hydroxyl is cooperated with ethylene glycol and tetraethoxysilane to generate modified polyethyl silicate, so that the toughness of the organosilicon coating is improved, and the film forming service life is prolonged; mica with better high temperature resistance can be horizontally arranged in the coating components, scattered particles can be effectively gathered through the reaction of the components, the bridging effect is achieved in the coating, and the addition of ceramic fibers enables the coating to form a three-dimensional network structure, so that the heat insulation property is ensured; sodium silicate is used as an adhesive to realize the combination of mica, ceramic fiber and organic components, reduce the heat conductivity of the high-temperature-resistant coating and improve the high-temperature resistance.
Preferably, the high temperature resistant coating further comprises 4-6 parts of styrene-acrylic emulsion and 1-2 parts of polyvinyl amine in parts by weight.
By adopting the technical scheme, the high-temperature-resistant styrene-acrylic emulsion and the polyvinyl amine are further added into the high-temperature-resistant coating component to assist in film formation, and the polyvinyl amine is a water-soluble polymer, so that fusion among styrene-acrylic emulsion particles can be inhibited, the porosity is promoted, and the pores of the porous structure are filled with air with small heat conductivity, so that the heat conductivity can be reduced, and the high-temperature resistance can be improved.
Preferably, the high temperature resistant coating further comprises 2-4 parts of glycidyl acrylate, 2-3 parts of 4-hydroxy phthalic anhydride, 0.6-0.8 part of sodium dodecyl sulfate and 0.1-0.2 part of potassium persulfate in parts by weight.
By adopting the technical scheme, the styrene-acrylic emulsion is modified by utilizing the functional monomer 4-hydroxy phthalic anhydride and glycidyl acrylate in the presence of the emulsifier sodium dodecyl sulfate and the initiator potassium persulfate, so that the thermal stability is improved, and the aim of improving the high-temperature-resistant coating performance is fulfilled.
Preferably, the styrene-acrylic emulsion comprises the following components in parts by weight: glycidyl acrylate: 4-hydroxy phthalic anhydride = 6:3:2.
preferably, the adhesive also comprises 1-2 parts of silane coupling agent by weight.
By adopting the technical scheme, the compatibility of the tetraethoxysilane and each component is improved by utilizing the coupling characteristic of the silane coupling agent, and the organic compounding is realized, so that the high-temperature-resistant coating with better performance is obtained.
Preferably, the curing agent is triethylene tetramine; the silane coupling agent is KH-550.
In a second aspect, the present application provides a processing technology of a ball valve casting, which adopts the following technical scheme:
a processing technology of a ball valve casting comprises the following steps:
s1, preparing a coating of a high-temperature-resistant coating; blending 2- (dimethylcarbamoyl) phenylboronic acid, 3- (2-fluorophenyl) propanal, toluene and palladium chloride, heating to 80-90 ℃, and stirring for reaction for 3-4 hours to obtain a product A;
mixing ethyl orthosilicate, a product A, ethylene glycol and 25-30 parts of water at 70-75 ℃, adjusting pH=5-5.5, and stirring for 3-4h; adding mica, ceramic fiber, sodium silicate, curing agent and the rest of water, and continuously stirring for 1-1.2h to obtain the coating;
s2, surface treatment of a ball valve casting; sand blasting is carried out on the surface of the ball valve casting, so that the surface cleanliness reaches Sa2.5 level and the surface roughness reaches 30-40 mu m;
spraying 4-5 layers of the coating prepared in the step S1 on the surface of the ball valve casting by using a spray gun, wherein the thickness of each layer is 30-45 mu m, the spraying distance is 220-280mm, and the pressure of the spray gun is 1.2-1.6MPa;
drying at 100-130 deg.c for 30-40min and cooling to obtain treated ball valve casting.
Preferably, the step S1 further includes the following steps: blending 4-6 parts of styrene-acrylic emulsion and 1-2 parts of polyvinyl amine, adding 2-4 parts of glycidyl acrylate, 2-3 parts of 4-hydroxy phthalic anhydride, 0.6-0.8 part of sodium dodecyl sulfate and 0.1-0.2 part of potassium persulfate, and reacting at 80-90 ℃ for 3-4 hours to obtain a product B;
mixing 40-50 parts of tetraethoxysilane, 8-10 parts of ethylene glycol and 25-30 parts of water at 70-75 ℃, adjusting pH=5-5.5, and stirring for 3-4 hours; then adding the product B and 1-2 parts of silane coupling agent, and continuously stirring for 50-60min; finally, adding 2-4 parts of mica, 1-2 parts of ceramic fiber, 1-2 parts of sodium silicate, 1-2 parts of curing agent and the rest of water, and continuously stirring for 1-1.2 hours to prepare the coating.
In summary, the present application includes the following beneficial technical effects:
1. the tetraethoxysilane takes Si-O-Si as a main chain, so that the silicon-oxygen bond energy is large and the high temperature resistance is strong; the silicon-oxygen bond has large electronegativity difference, so that the polarity of the bond is large, the shielding effect on the hydrocarbon group can be realized, and the oxidation stability is improved; 2- (dimethylcarbamoyl) phenylboronic acid and 3- (2-fluorophenyl) propanal are mixed with tetraethoxysilane, and the phenyl ring-shaped large pi bond structure is stretched outwards, and meanwhile, a firm C-F bond is introduced, so that the silicon-oxygen bond of the organosilicon is not easy to attack, the chain stability is higher, a synergistic effect is generated, and the high-temperature resistance is improved; under the acidic condition, the reaction product of the 2- (dimethylcarbamoyl) phenylboronic acid and the 3- (2-fluorophenyl) propanal forms hydroxyl, and the hydroxyl is cooperated with ethylene glycol and tetraethoxysilane to generate modified polyethyl silicate, so that the toughness of the organosilicon coating is improved; sodium silicate is used as an adhesive, so that the combination of mica, ceramic fiber and organic components is realized, the heat conductivity of the high-temperature-resistant coating is reduced, and the high-temperature resistance is improved;
2. the high-temperature resistant styrene-acrylic emulsion and the polyvinyl amine are further added into the high-temperature resistant coating component to assist in film formation, and the polyvinyl amine is a water-soluble polymer, so that fusion among styrene-acrylic emulsion particles can be inhibited, the porosity is promoted, and the pores of the porous structure are filled with air with small heat conductivity, so that the heat conductivity can be reduced, and the high-temperature resistance can be improved;
3. the functional monomer 4-hydroxy phthalic anhydride and glycidyl acrylate are used for modifying the styrene-acrylic emulsion in the presence of an emulsifier sodium dodecyl sulfate and an initiator potassium persulfate, so that the thermal stability is improved, and the aim of improving the high-temperature-resistant coating performance is fulfilled.
Detailed Description
The present application is described in further detail below.
In this application, ethyl orthosilicate is supplied by Jin Jinle (Hunan) chemical Co., ltd; 2- (dimethylcarbamoyl) phenylboronic acid is supplied by Hongxin Hubei, inc. of Fine chemical industry; mica is supplied by Hebei Wen Hao mineral products Co., ltd., 60-80 mesh; ceramic fiber is provided by the Jiade mineral processing factory in the Ming county of life, the product number is JD-TCXW1, and the specification is 1.0-3.5mm; the styrene-acrylic emulsion is a styrene-acrylic polymer emulsion provided by En chemical industry Co., ltd in Anhui, model WC-SA220, brand DUSUE; the polyvinyl amine is provided by Wuhan Rong and lautus biotechnology Co., ltd; glycidyl acrylate is provided by the WUHANXIN Jiali Biotechnology Co., ltd., product number A1045; the silane coupling agent is KH-550.
The raw materials used in the following embodiments may be commercially available from ordinary sources unless otherwise specified.
Examples
Example 1
The embodiment discloses a ball valve casting and a processing technology thereof; a ball valve casting, the surface of ball valve casting is coated with high temperature resistant coating, the high temperature resistant coating includes the following coating components: ethyl orthosilicate, 2- (dimethylcarbamoyl) phenylboronic acid, 3- (2-fluorophenyl) propanal, palladium chloride, mica, ceramic fibers, sodium silicate, ethylene glycol, toluene, a curing agent and water, wherein the curing agent is triethylene tetramine; the contents of the components are shown in Table 1 below.
A processing technology of a ball valve casting comprises the following steps:
s1, preparing a coating of a high-temperature-resistant coating; blending 2- (dimethylcarbamoyl) phenylboronic acid, 3- (2-fluorophenyl) propanal, toluene and palladium chloride, heating to 80 ℃, and stirring for reaction for 3 hours to obtain a product A;
mixing ethyl orthosilicate, a product A, ethylene glycol and 25 parts of water at 70 ℃, adjusting the pH to be=5, and stirring for 3 hours; adding mica, ceramic fiber, sodium silicate, curing agent and the rest of water, and continuously stirring for 1h to obtain the coating;
s2, surface treatment of a ball valve casting; sand blasting is carried out on the surface of the ball valve casting, so that the surface cleanliness reaches Sa2.5 level and the surface roughness reaches 30 mu m;
spraying 4 layers of the coating prepared in the step S1 on the surface of the ball valve casting by using a spray gun, wherein the thickness of each layer is 30 mu m, the spraying distance is 220mm, and the pressure of the spray gun is 1.2MPa;
drying at 100 ℃ for 30min, and cooling to obtain the treated ball valve casting.
Example 2
The embodiment discloses a ball valve casting and a processing technology thereof; a ball valve casting, the surface of ball valve casting is coated with high temperature resistant coating, the high temperature resistant coating includes the following coating components: ethyl orthosilicate, 2- (dimethylcarbamoyl) phenylboronic acid, 3- (2-fluorophenyl) propanal, palladium chloride, mica, ceramic fibers, sodium silicate, ethylene glycol, toluene, a curing agent and water, wherein the curing agent is triethylene tetramine; the contents of the components are shown in Table 1 below.
A processing technology of a ball valve casting comprises the following steps:
s1, preparing a coating of a high-temperature-resistant coating; blending 2- (dimethylcarbamoyl) phenylboronic acid, 3- (2-fluorophenyl) propanal, toluene and palladium chloride, heating to 90 ℃, and stirring for reacting for 4 hours to obtain a product A;
mixing ethyl orthosilicate, product a, ethylene glycol and 30 parts of water at 75 ℃, adjusting ph=5.5, stirring for 4h; adding mica, ceramic fiber, sodium silicate, curing agent and the rest of water, and continuously stirring for 1.2 hours to prepare the coating;
s2, surface treatment of a ball valve casting; sand blasting is carried out on the surface of the ball valve casting, so that the surface cleanliness reaches Sa2.5 level and the surface roughness reaches 40 mu m;
spraying 5 layers of the coating prepared in the step S1 on the surface of the ball valve casting by using a spray gun, wherein the thickness of each layer is 45 mu m, the spraying distance is 280mm, and the pressure of the spray gun is 1.6MPa;
drying at 130 ℃ for 40min, and cooling to obtain the treated ball valve casting.
Example 3
The embodiment discloses a ball valve casting and a processing technology thereof; a ball valve casting, the surface of ball valve casting is coated with high temperature resistant coating, the high temperature resistant coating includes the following coating components: ethyl orthosilicate, 2- (dimethylcarbamoyl) phenylboronic acid, 3- (2-fluorophenyl) propanal, palladium chloride, mica, ceramic fibers, sodium silicate, ethylene glycol, toluene, a curing agent and water, wherein the curing agent is triethylene tetramine; the contents of the components are shown in Table 1 below.
A processing technology of a ball valve casting comprises the following steps:
s1, preparing a coating of a high-temperature-resistant coating; blending 2- (dimethylcarbamoyl) phenylboronic acid, 3- (2-fluorophenyl) propanal, toluene and palladium chloride, heating to 85 ℃, and stirring for reacting for 3.5 hours to obtain a product A;
mixing ethyl orthosilicate, product a, ethylene glycol and 27 parts of water at 73 ℃, adjusting the ph=5, and stirring for 3.5h; adding mica, ceramic fiber, sodium silicate, curing agent and the rest of water, and continuously stirring for 1.1h to obtain the coating;
s2, surface treatment of a ball valve casting; sand blasting is carried out on the surface of the ball valve casting, so that the surface cleanliness reaches Sa2.5 level and the surface roughness reaches 35 mu m;
spraying 4 layers of the coating prepared in the step S1 on the surface of the ball valve casting by using a spray gun, wherein the thickness of each layer is 40 mu m, the spraying distance is 250mm, and the pressure of the spray gun is 1.4MPa;
drying at 120 ℃ for 35min, and cooling to obtain the treated ball valve casting.
Example 4
The difference with the embodiment 1 is that the embodiment discloses a ball valve casting and a processing technology thereof; a ball valve casting, the surface of ball valve casting is coated with high temperature resistant coating, the high temperature resistant coating includes the following coating components: ethyl orthosilicate, 2- (dimethylcarbamoyl) phenylboronic acid, 3- (2-fluorophenyl) propanal, palladium chloride, mica, ceramic fibers, sodium silicate, ethylene glycol, toluene, a curing agent, water, styrene-acrylic emulsion, polyvinyl amine, glycidyl acrylate, 4-hydroxy phthalic anhydride, sodium dodecyl sulfate, potassium persulfate and a silane coupling agent, wherein the curing agent is triethylene tetramine, and the silane coupling agent is KH-550; the contents of the components are shown in Table 1 below.
The processing technology of the ball valve casting comprises the following steps of:
mixing styrene-acrylic emulsion and polyvinyl amine, adding glycidyl acrylate, 4-hydroxy phthalic anhydride, sodium dodecyl sulfate and potassium persulfate, and reacting at 80 ℃ for 3 hours to obtain a product B;
mixing ethyl orthosilicate, a product A, ethylene glycol and 25 parts of water at 70 ℃, adjusting the pH to be=5, and stirring for 3 hours; then adding the product B and the silane coupling agent, and continuously stirring for 50min; and finally adding mica, ceramic fiber, sodium silicate, curing agent and the rest of water, and continuously stirring for 1h to obtain the coating.
Example 5
The difference with the embodiment 2 is that the embodiment discloses a ball valve casting and a processing technology thereof; a ball valve casting, the surface of ball valve casting is coated with high temperature resistant coating, the high temperature resistant coating includes the following coating components: ethyl orthosilicate, 2- (dimethylcarbamoyl) phenylboronic acid, 3- (2-fluorophenyl) propanal, palladium chloride, mica, ceramic fibers, sodium silicate, ethylene glycol, toluene, a curing agent, water, styrene-acrylic emulsion, polyvinyl amine, glycidyl acrylate, 4-hydroxy phthalic anhydride, sodium dodecyl sulfate, potassium persulfate and a silane coupling agent, wherein the curing agent is triethylene tetramine, and the silane coupling agent is KH-550; the contents of the components are shown in Table 1 below.
The processing technology of the ball valve casting comprises the following steps of:
mixing styrene-acrylic emulsion and polyvinyl amine, adding glycidyl acrylate, 4-hydroxy phthalic anhydride, sodium dodecyl sulfate and potassium persulfate, and reacting at 90 ℃ for 4 hours to obtain a product B;
mixing ethyl orthosilicate, product a, ethylene glycol and 30 parts of water at 5 ℃, adjusting ph=5.5, stirring for 4h; then adding the product B and the silane coupling agent, and continuously stirring for 60min; and finally adding mica, ceramic fiber, sodium silicate, curing agent and the rest of water, and continuously stirring for 1.2 hours to prepare the coating.
Example 6
The difference with the embodiment 3 is that the embodiment discloses a ball valve casting and a processing technology thereof; a ball valve casting, the surface of ball valve casting is coated with high temperature resistant coating, the high temperature resistant coating includes the following coating components: ethyl orthosilicate, 2- (dimethylcarbamoyl) phenylboronic acid, 3- (2-fluorophenyl) propanal, palladium chloride, mica, ceramic fibers, sodium silicate, ethylene glycol, toluene, a curing agent, water, styrene-acrylic emulsion, polyvinyl amine, glycidyl acrylate, 4-hydroxy phthalic anhydride, sodium dodecyl sulfate, potassium persulfate and a silane coupling agent, wherein the curing agent is triethylene tetramine, and the silane coupling agent is KH-550; the contents of the components are shown in Table 1 below.
The processing technology of the ball valve casting comprises the following steps of:
mixing styrene-acrylic emulsion and polyvinyl amine, adding glycidyl acrylate, 4-hydroxy phthalic anhydride, sodium dodecyl sulfate and potassium persulfate, and reacting at 85 ℃ for 3.5h under heat preservation to obtain a product B;
mixing ethyl orthosilicate, product a, ethylene glycol and 27 parts of water at 73 ℃, adjusting the ph=5, and stirring for 3.5h; then adding the product B and the silane coupling agent, and continuously stirring for 55min; and finally adding mica, ceramic fiber, sodium silicate, curing agent and the rest of water, and continuously stirring for 1.1h to obtain the coating.
Example 7
The difference from example 1 is that the coating component of the high temperature resistant coating further comprises styrene-acrylic emulsion and polyvinyl amine, and the contents of the components are shown in the following table 2.
Example 8
The difference from example 7 is that the coating composition of the high temperature resistant coating further comprises glycidyl acrylate, 4-hydroxy phthalic anhydride, sodium dodecyl sulfate and potassium persulfate, the contents of each component are shown in table 2 below.
Example 9
The difference from example 8 is that the styrene-acrylic emulsion was replaced with an acrylic emulsion, and the contents of the components are shown in Table 2 below.
Example 10
The difference from example 8 is that glycidyl acrylate is replaced with ethyl acetate, and the contents of the components are shown in the following table 2.
Example 11
The difference from example 8 is that 4-hydroxy phthalic anhydride was replaced with 4-carboxybenzaldehyde, and the contents of the components are shown in Table 2 below.
Example 12
The difference with example 4 is that the styrene-acrylic emulsion comprises the following components in parts by weight: glycidyl acrylate: 4-hydroxy phthalic anhydride = 6:3:2, the contents of the components are shown in Table 2 below.
Example 13
The difference from example 1 is that the coating component of the high temperature resistant coating further comprises a silane coupling agent KH-550, the contents of each component are shown in table 2 below.
Example 14
The difference from example 13 is that the silane coupling agent is Kh-560.
Example 15
The difference from example 1 is that the curing agent is p-hydroxybenzenesulfonic acid.
Comparative example
Comparative example 1
The difference from example 1 is that the coating composition of the high temperature resistant coating is only 40 parts of ethyl orthosilicate, 1 part of curing agent and 30 parts of water.
Comparative example 2
The difference from example 1 is that 2- (dimethylcarbamoyl) phenylboronic acid is replaced with phenylboronic acid.
Comparative example 3
The difference from example 1 is that 3- (2-fluorophenyl) propanal is replaced by benzaldehyde.
TABLE 1 component content tables of examples 1 to 6
TABLE 2 component content tables of examples 7 to 13
Performance test
The testing method comprises the following steps: performing high temperature resistance test on ball valve casting samples processed by each example and comparative example, wherein the sizes of the ball valve casting samples are 50mm multiplied by 20mm multiplied by 2mm; testing the yield strength of a sample by a tensile testing machine at the normal temperature of 25 ℃ and 400 ℃, wherein the tensile speed is 15mm/min, and the high temperature resistance is represented by the difference value of the yield strength at 400 ℃ and the normal temperature of 25 ℃, wherein the smaller the difference value is, the higher the mechanical property maintenance degree is, and the high temperature resistance is stronger; the test results are shown in table 3 below.
Table 3 results of performance test of each of examples and comparative examples
| Yield strength difference/MPa | |
| Example 1 | 58 |
| Example 2 | 54 |
| Example 3 | 57 |
| Example 4 | 38 |
| Example 5 | 33 |
| Example 6 | 36 |
| Example 7 | 51 |
| Example 8 | 42 |
| Example 9 | 47 |
| Example 10 | 46 |
| Example 11 | 46 |
| Example 12 | 36 |
| Example 13 | 55 |
| Example 14 | 56 |
| Example 15 | 59 |
| Comparative example 1 | 92 |
| Comparative example 2 | 80 |
| Comparative example 3 | 75 |
The present embodiment is merely for explanation of the present application and does not limit the protection scope of the present application, and those skilled in the art can make modifications to the present embodiment without creative contribution as needed after reading the present specification, but are protected by patent laws only within the scope of claims of the present application.
Claims (8)
1. A ball valve casting, characterized in that: the ball valve casting surface is coated with a high-temperature-resistant coating, and the high-temperature-resistant coating comprises the following coating components in parts by weight:
40-50 parts of ethyl orthosilicate;
12-15 parts of 2- (dimethylcarbamoyl) phenylboronic acid;
6-8 parts of 3- (2-fluorophenyl) propanal;
1-2 parts of palladium chloride;
2-4 parts of mica;
1-2 parts of ceramic fiber;
1-2 parts of sodium silicate;
8-10 parts of ethylene glycol;
3-5 parts of toluene;
1-2 parts of curing agent;
30-40 parts of water;
preparing a coating of the high-temperature-resistant coating: blending 2- (dimethylcarbamoyl) phenylboronic acid, 3- (2-fluorophenyl) propanal, toluene and palladium chloride, heating to 80-90 ℃, and stirring for reaction for 3-4 hours to obtain a product A;
mixing ethyl orthosilicate, a product A, ethylene glycol and 25-30 parts of water at 70-75 ℃, adjusting pH=5-5.5, and stirring for 3-4h; and adding mica, ceramic fiber, sodium silicate, curing agent and the rest of water, and continuously stirring for 1-1.2h to obtain the coating.
2. A ball valve casting as defined in claim 1, wherein: the high-temperature resistant coating also comprises 4-6 parts of styrene-acrylic emulsion and 1-2 parts of polyvinyl amine by weight.
3. A ball valve casting as defined in claim 2, wherein: the high-temperature resistant coating also comprises 2-4 parts of glycidyl acrylate, 2-3 parts of 4-hydroxy phthalic anhydride, 0.6-0.8 part of sodium dodecyl sulfate and 0.1-0.2 part of potassium persulfate by weight.
4. A ball valve casting according to claim 3, wherein: the styrene-acrylic emulsion comprises the following components in parts by weight: glycidyl acrylate: 4-hydroxy phthalic anhydride = 6:3:2.
5. a ball valve casting as defined in claim 1, wherein: the high-temperature resistant coating also comprises 1-2 parts of silane coupling agent according to parts by weight.
6. A ball valve casting as defined in claim 5, wherein: the curing agent is triethylene tetramine; the silane coupling agent is KH-550.
7. A process for machining a ball valve casting as defined in claim 1, comprising the steps of:
s1, preparing a coating of a high-temperature-resistant coating; blending 2- (dimethylcarbamoyl) phenylboronic acid, 3- (2-fluorophenyl) propanal, toluene and palladium chloride, heating to 80-90 ℃, and stirring for reaction for 3-4 hours to obtain a product A;
mixing ethyl orthosilicate, a product A, ethylene glycol and 25-30 parts of water at 70-75 ℃, adjusting pH=5-5.5, and stirring for 3-4h; adding mica, ceramic fiber, sodium silicate, curing agent and the rest of water, and continuously stirring for 1-1.2h to obtain the coating;
s2, surface treatment of a ball valve casting; sand blasting is carried out on the surface of the ball valve casting, so that the surface cleanliness reaches Sa2.5 level and the surface roughness reaches 30-40 mu m;
spraying 4-5 layers of the coating prepared in the step S1 on the surface of the ball valve casting by using a spray gun, wherein the thickness of each layer is 30-45 mu m, the spraying distance is 220-280mm, and the pressure of the spray gun is 1.2-1.6MPa;
drying at 100-130 deg.c for 30-40min and cooling to obtain treated ball valve casting.
8. The process for manufacturing a ball valve casting according to claim 7, wherein: the step of S1 is as follows:
blending 12-15 parts of 2- (dimethylcarbamoyl) phenylboronic acid with 6-8 parts of 3- (2-fluorophenyl) propanal, 3-5 parts of toluene and 1-2 parts of palladium chloride, heating to 80-90 ℃, and stirring for reaction for 3-4 hours to obtain a product A;
blending 4-6 parts of styrene-acrylic emulsion and 1-2 parts of polyvinyl amine, adding 2-4 parts of glycidyl acrylate, 2-3 parts of 4-hydroxy phthalic anhydride, 0.6-0.8 part of sodium dodecyl sulfate and 0.1-0.2 part of potassium persulfate, and reacting at 80-90 ℃ for 3-4 hours to obtain a product B;
mixing 40-50 parts of tetraethoxysilane, 8-10 parts of ethylene glycol and 25-30 parts of water at 70-75 ℃, adjusting pH=5-5.5, and stirring for 3-4 hours; then adding the product B and 1-2 parts of silane coupling agent, and continuously stirring for 50-60min; finally, adding 2-4 parts of mica, 1-2 parts of ceramic fiber, 1-2 parts of sodium silicate, 1-2 parts of curing agent and the rest of water, and continuously stirring for 1-1.2 hours to prepare the coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211324130.1A CN115627118B (en) | 2022-10-27 | 2022-10-27 | Ball valve casting and processing technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211324130.1A CN115627118B (en) | 2022-10-27 | 2022-10-27 | Ball valve casting and processing technology thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115627118A CN115627118A (en) | 2023-01-20 |
| CN115627118B true CN115627118B (en) | 2024-03-19 |
Family
ID=84906009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211324130.1A Active CN115627118B (en) | 2022-10-27 | 2022-10-27 | Ball valve casting and processing technology thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115627118B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006011512A1 (en) * | 2004-07-28 | 2006-02-02 | Dainippon Ink And Chemicals, Inc. | Organic-inorganic composite coating film and aqueous coating composition |
| JP2012246440A (en) * | 2011-05-30 | 2012-12-13 | Nippon Paint Co Ltd | Inorganic coating composition |
| CN114350428A (en) * | 2022-01-11 | 2022-04-15 | 温州市海格阀门有限公司 | Antirust butterfly valve casting and machining method thereof |
-
2022
- 2022-10-27 CN CN202211324130.1A patent/CN115627118B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006011512A1 (en) * | 2004-07-28 | 2006-02-02 | Dainippon Ink And Chemicals, Inc. | Organic-inorganic composite coating film and aqueous coating composition |
| JP2012246440A (en) * | 2011-05-30 | 2012-12-13 | Nippon Paint Co Ltd | Inorganic coating composition |
| CN114350428A (en) * | 2022-01-11 | 2022-04-15 | 温州市海格阀门有限公司 | Antirust butterfly valve casting and machining method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115627118A (en) | 2023-01-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113308174A (en) | Dual-modified waterborne epoxy resin anticorrosive paint and preparation method thereof | |
| EP2138606A1 (en) | A composition containing silica sol, its preparation method, and galvanized self-lubricating metal material using the composition | |
| CN101870574A (en) | Anion colored veneer exterior thermal insulation material | |
| CN107129629A (en) | A kind of redispersible latex powder and preparation method thereof | |
| CN111777367B (en) | Waterproof repair mortar for building wall and preparation method thereof | |
| CN115572145B (en) | Modified basalt fiber reinforced basic magnesium sulfate cement and preparation method thereof | |
| CN115627118B (en) | Ball valve casting and processing technology thereof | |
| CN107619224A (en) | A kind of regeneration aggregate mortar of cracking resistance insulation and preparation method thereof | |
| CN110256034B (en) | Granite-imitated wall brick coating and preparation process thereof | |
| CN105236896A (en) | Light high-performance powder concrete and preparation method thereof | |
| CN112143269A (en) | Water-based inorganic zinc-rich coating and preparation method thereof | |
| CN114656177A (en) | Silicate cement with chlorine ion permeation resistance and preparation method thereof | |
| CN110357537B (en) | Self-repairing concrete using unhydrated cementitious material as repairing agent and preparation method thereof | |
| CN108864898A (en) | A kind of epoxy ceramic coating and preparation method thereof of anti-cracking | |
| CN115925335A (en) | Rust-proof steel fiber concrete and preparation method thereof | |
| CN105504641A (en) | Composite polyethylene material special for water pipes | |
| CN109355975B (en) | Heat-resistant vulcanized fiber paper and preparation method thereof | |
| CN112159246A (en) | Preparation method of cement-based building exterior wall thermal insulation material | |
| CN111187554A (en) | Anticorrosive paint for large-diameter high-temperature-resistant thermal steel pipe and spraying method | |
| CN111646769A (en) | Flue gas pipeline of gas steam boiler and construction method thereof | |
| CN112592140A (en) | Cement-based material for building 3D printing | |
| CN111792869A (en) | Anti-cracking concrete filler and production process thereof | |
| CN105176209B (en) | High intensity low thermal conductivity PP composite material layer for pipe insulation | |
| CN114213754B (en) | MOFs particle doped composite material and preparation method thereof | |
| CN118063149B (en) | Self-leveling mortar and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |