CN116218365A - Organosilicon coating and preparation method thereof - Google Patents
Organosilicon coating and preparation method thereof Download PDFInfo
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- CN116218365A CN116218365A CN202310383121.8A CN202310383121A CN116218365A CN 116218365 A CN116218365 A CN 116218365A CN 202310383121 A CN202310383121 A CN 202310383121A CN 116218365 A CN116218365 A CN 116218365A
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- 238000000576 coating method Methods 0.000 title claims abstract description 60
- 239000011248 coating agent Substances 0.000 title claims abstract description 59
- 238000002360 preparation method Methods 0.000 title abstract description 13
- 239000003921 oil Substances 0.000 claims abstract description 59
- -1 polydimethylsiloxane copolymer Polymers 0.000 claims abstract description 41
- 239000004205 dimethyl polysiloxane Substances 0.000 claims abstract description 40
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims abstract description 40
- 239000003054 catalyst Substances 0.000 claims abstract description 34
- 239000002904 solvent Substances 0.000 claims abstract description 30
- 239000007822 coupling agent Substances 0.000 claims abstract description 25
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 21
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 20
- 239000010703 silicon Substances 0.000 claims abstract description 20
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910021485 fumed silica Inorganic materials 0.000 claims abstract description 18
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 17
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims abstract description 17
- 150000002148 esters Chemical class 0.000 claims abstract description 17
- DTPCFIHYWYONMD-UHFFFAOYSA-N decaethylene glycol Chemical compound OCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO DTPCFIHYWYONMD-UHFFFAOYSA-N 0.000 claims abstract description 15
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 claims abstract description 15
- HQYALQRYBUJWDH-UHFFFAOYSA-N trimethoxy(propyl)silane Chemical compound CCC[Si](OC)(OC)OC HQYALQRYBUJWDH-UHFFFAOYSA-N 0.000 claims abstract description 15
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 33
- 239000002216 antistatic agent Substances 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 15
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims description 13
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 claims description 12
- 229910052697 platinum Inorganic materials 0.000 claims description 12
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 9
- 239000004447 silicone coating Substances 0.000 claims description 9
- 229920001296 polysiloxane Polymers 0.000 claims description 8
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 claims description 6
- CNCOEDDPFOAUMB-UHFFFAOYSA-N N-Methylolacrylamide Chemical compound OCNC(=O)C=C CNCOEDDPFOAUMB-UHFFFAOYSA-N 0.000 claims description 6
- 229910002651 NO3 Inorganic materials 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 229920001577 copolymer Polymers 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- OMNKZBIFPJNNIO-UHFFFAOYSA-N n-(2-methyl-4-oxopentan-2-yl)prop-2-enamide Chemical compound CC(=O)CC(C)(C)NC(=O)C=C OMNKZBIFPJNNIO-UHFFFAOYSA-N 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims 1
- 150000001412 amines Chemical group 0.000 claims 1
- 239000003973 paint Substances 0.000 abstract description 11
- 230000032683 aging Effects 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 33
- 230000000052 comparative effect Effects 0.000 description 14
- 239000004033 plastic Substances 0.000 description 14
- 229920003023 plastic Polymers 0.000 description 14
- 239000000463 material Substances 0.000 description 11
- 239000000853 adhesive Substances 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 229920006351 engineering plastic Polymers 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 239000000945 filler Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000004417 polycarbonate Substances 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000010292 electrical insulation Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 125000000524 functional group Chemical group 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000004841 bisphenol A epoxy resin Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000007665 sagging Methods 0.000 description 2
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 description 1
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 206010000369 Accident Diseases 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical group C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical class C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- ARYZCSRUUPFYMY-UHFFFAOYSA-N methoxysilane Chemical class CO[SiH3] ARYZCSRUUPFYMY-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Classifications
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- 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
- C09D183/04—Polysiloxanes
-
- 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
- C09D5/24—Electrically-conducting 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Abstract
The invention belongs to the field of organic coatings, and in particular relates to an organic silicon coating which comprises the following components in parts by weight: 30-50 parts of Xinyue KP-549 acrylic acid (ester) or polydimethylsiloxane copolymer and 50-100 parts of low-viscosity alpha, omega-dihydroxypolysiloxane; 2-10 parts of polydimethylsiloxane, 10-30 parts of white oil, 20-40 parts of fumed silica, 10-15 parts of polymethyl nonafluorohexyl siloxane, 10-40 parts of methoxy PEG-10 propyl trimethoxy silane, 2-5 parts of cross-linking agent, 0.5-1 part of coupling agent, 0.01-0.05 part of catalyst and 100-300 parts of solvent oil. The paint has excellent antistatic, ageing and oxidation resistance, and once coated, the paint can protect an ammeter box for 15-20 years, and is basically equivalent to the service life of the ammeter box. Meanwhile, the invention also provides a preparation method of the coating.
Description
Technical Field
The invention belongs to the field of organic silicon, and particularly relates to an organic silicon coating and a preparation method thereof.
Background
The ammeter box is a low-voltage distribution box formed by assembling switching equipment, measuring instruments, protection electrical appliances and auxiliary equipment in a closed or semi-closed cabinet or on a screen according to the electric wiring requirements. The circuit can be switched on or off by manual or automatic switch in normal operation, and the circuit can be switched off or alarmed by the protection electric appliance in fault or abnormal operation. However, with the increase of the types and the number of household appliances, the burden of the electric meter box is more and more heavy, and reports are frequently made when fire accidents are caused by the fire of the electric meter box.
The material of the main current ammeter box is a resin-based composite material. The main components of the box body are ABS engineering plastics, polycarbonate transparent PC materials, DMC and SMC materials, and the box body is formed by injection molding and pressing of the ABS engineering plastics, the polycarbonate transparent PC materials, the DMC and the SMC materials. Compared with the prior metal ammeter box, the ammeter box made of the plastic material has better chemical corrosion resistance, fatigue resistance, electrical insulation and the like, and is applied to actual production and life by replacing the prior metal ammeter box on a large scale.
However, there are some safety hazards in the use of plastic electric meter boxes, which cause the electric meter boxes to fire, and there are many reasons, such as overload of electricity, humidity, incorrect installation, private wiring on the electric meter, etc., especially overload of electricity consumption in summer, and may cause the electric meter boxes to fire. The plastic has low ignition point, especially after long time, and the original antistatic performance and flame retardant performance are greatly reduced, so that the ignition accident can be avoided.
To solve this problem, during the processing of the electric meter box, some paint is usually sprayed on the surface thereof to ensure high toughness and flame retardance of the casing during use.
Patent CN 109181532A discloses a room temperature curing organosilicon paint, which is prepared by mixing the following raw materials in parts by weight: 100 parts of alpha, omega-dihydroxyl polydimethylsiloxane, 10-50 parts of alpha, omega-dihydroxyl polytrifluoropropyl methyl siloxane, 5-20 parts of polydimethylsiloxane, 5-20 parts of polytrifluoropropyl methyl siloxane, 5-50 parts of aminopropyl triethoxysilane, 20-100 parts of hydrogenated bisphenol A epoxy resin, 0.5-20 parts of fumed silica, 80 parts of filler, 5-9 parts of cross-linking agent, 1-6 parts of coupling agent, 0.1-1 part of catalyst and 100-300 parts of diluent. The mechanism is as follows: the alpha, omega-dihydroxyl polydimethylsiloxane, the alpha, omega-dihydroxyl polytrifluoropropyl methyl siloxane and the bisphenol A epoxy resin are adopted as film forming substances, the fluorine-containing groups are introduced to increase the oil resistance, corrosion resistance and high temperature resistance of the coating, the epoxy resin is added to increase the adhesive force of the coating to metal, and the polydimethyl siloxane and the polytrifluoropropyl methyl siloxane are added to reduce the viscosity and the surface energy of the coating, so that the processing coating performance and the surface adhesion performance of the coating are further enhanced; at the same time, the mechanical properties are reinforced by the addition of fillers. The organosilicon coating has good water resistance and salt fog resistance, but the development purpose is to apply the metal anticorrosion field, the protection effect of the plastic ammeter box is to be checked, the electrical insulation performance required by the coating suitable for the ammeter box is not described by corresponding characters, and the organosilicon coating cannot be directly applied to the ammeter box.
On one hand, the existing paint for the plastic ammeter box is not more, on the other hand, because the working environment of the ammeter box is special and is in a high-voltage and closed state for a long time, the ammeter box is more severe and still suffers from wind, sun and rain, and the common paint for plastics cannot play a corresponding protection role, so that new antistatic, ageing-resistant and oxidation-resistant paint suitable for plastics needs to be developed to meet the protection purpose of the ammeter box.
Disclosure of Invention
In view of the shortcomings of the prior art, a first object of the present invention is to provide an antistatic, anti-aging, anti-oxidation coating suitable for plastic electricity meter boxes. The invention provides an organosilicon coating which has excellent antistatic, ageing and oxidation resistance, and once the coating is coated, the coating can give protection to an ammeter box for 15-20 years, and the service life of the coating is basically equivalent to that of the ammeter box.
A second object of the present invention is to provide a method for producing the above-mentioned silicone coating.
In order to achieve the first object, the present invention adopts the following technical scheme:
an organosilicon coating consists of the following components in parts by weight: 30-50 parts of Xinyue KP-549 acrylic acid (ester) or polydimethylsiloxane copolymer and 50-100 parts of low-viscosity alpha, omega-dihydroxypolysiloxane; 2-10 parts of polydimethylsiloxane, 10-30 parts of white oil, 20-40 parts of fumed silica, 10-15 parts of polymethyl nonafluorohexyl siloxane, 10-40 parts of methoxy PEG-10 propyl trimethoxy silane, 2-5 parts of cross-linking agent, 0.5-1 part of coupling agent, 0.01-0.05 part of catalyst and 100-300 parts of solvent oil;
wherein the viscosity of the low-viscosity alpha, omega-dihydroxypolysiloxane is 1000 mPa.s-5000 mPa.s; the relative molecular weight of the polydimethylsiloxane is 20000-50000;
the viscosity of the polymethyl nonafluorohexyl siloxane is 3000-7500 mPa.s, and the coupling agent is prepared by mixing isopropyl triisostearate titanate and gamma-methacryloxypropyl trimethoxysilane according to the mass ratio of 3:2.
In the above-mentioned silicone coating, the white oil is 3# white oil.
In the organic silicon coating, the antistatic agent is one of stearamidopropyl hydroxyethyl quaternary ammonium nitrate, alkyl dicarboxymethyl ammonium ethyllactone and dodecyl dimethyl quaternary ethylinternal salt.
In the organic silicon coating, the cross-linking agent is one of N-methylol acrylamide, divinylbenzene and diacetone acrylamide.
In the above-mentioned organic silicon coating material, the catalyst is a platinum catalyst.
In the organic silicon coating, the platinum catalyst is platinum (0) -1, 3-divinyl-1, 3-tetramethyl disiloxane.
In the above-mentioned organic silicon coating, the solvent oil is one or more of No. 120, no. 150 and No. 200 solvent oils.
In one of the above-mentioned silicone paints, the silicone paint is applied in the form of a spray.
Meanwhile, the invention also discloses a preparation method of the organic silicon coating, which comprises the following steps:
(1) Dehydrating each raw material to a water content of 0.3wt% or less;
(2) Adding Xinyue KP-549 acrylic acid (ester) copolymer/polydimethylsiloxane, low-viscosity alpha, omega-dihydroxyl polysiloxane, polydimethylsiloxane, white oil, fumed silica, polymethyl nonafluorohexyl siloxane and methoxy PEG-10 propyl trimethoxy silane into a planetary barrel, stirring and dispersing uniformly to obtain a mixture;
(3) Grinding the obtained mixture until the particle size is less than or equal to 40 and p m;
(4) Adding antistatic agent, cross-linking agent, coupling agent, catalyst and solvent oil into the ground mixture, vacuumizing, heating to 70-80 ℃, stirring for 1-2h, discharging and packaging.
Compared with the prior art, the invention has the following beneficial effects:
the film forming material of the invention is acrylic acid (ester)/polydimethylsiloxane copolymer, polymethyl nonafluorohexyl siloxane, methoxy PEG-10 propyl trimethoxy silane and low viscosity alpha, omega-dihydroxyl polysiloxane, and the formed film is compact, uniform, smooth and flat, and has excellent acid and alkali corrosion resistance, scratch resistance and electrical insulation.
The acrylic acid (ester)/polydimethylsiloxane copolymer, the low-viscosity alpha, omega-dihydroxyl polysiloxane and the methoxy PEG-10 propyl trimethoxy silane in the film forming substance contain hydroxyl and carboxyl functional groups, and part of the acrylic acid (ester)/polydimethylsiloxane copolymer is combined with unsaturated bonds in a plastic substrate under the promotion effect of isopropyl triisostearate titanate in a coupling agent, so that the originally excellent adhesive force of a film is further combined with the surface of a plastic ammeter box closely, other mediums are prevented from penetrating and corroding an aged ammeter box towards an interface, and powerful protection is provided for the ammeter box. The coupling agent provided by the invention is formed by mixing isopropyl triisostearate and gamma-methacryloxypropyl trimethoxysilane according to the mass ratio of 3:2, the two substances have the effects of enhancing the adhesive strength between a plastic substrate and a resin coating film, preventing other mediums from penetrating to an interface and improving the interface state, the isopropyl triisostearate also has the effect of catalyzing and promoting the combination of functional groups in the film forming substances and unsaturated bonds in the plastic substrate, and the gamma-methacryloxypropyl trimethoxysilane can improve the dispersibility and compatibility of filler fumed silica in the resin, and the fumed silica and polydimethylsiloxane are used for defoaming and inhibiting bubbles in a synergic manner, so that the phenomena of orange peel, pinholes, sagging and the like of the coating film are avoided, and the protective effect and the service life are influenced.
The invention also limits the viscosity of part of components in the coating, the relative molecular weight of the polydimethylsiloxane used in the invention is 20000-50000, the surface tension is small, the invention has unique interface property, the surface tension of the coating can be effectively reduced, the coating property and expansibility are improved, a coating which has no orange peel and uniform appearance is obtained, and the polydimethylsiloxane and the fumed silica play the roles of synergistic defoaming and foam inhibition.
The catalyst used in the invention is platinum catalyst, and in some specific embodiments of the invention, the platinum catalyst used is platinum (0) -1, 3-divinyl-1, 3-tetramethyl disiloxane, which has the advantages of small dosage and high catalytic efficiency, and can rapidly catalyze the crosslinking reaction between acrylic acid (ester)/polydimethylsiloxane copolymer, polymethyl nine-fluorohexyl siloxane, methoxy PEG-10 propyl trimethoxy silane and low-viscosity alpha, omega-dihydroxy polysiloxane, and can avoid the phenomenon of yellowing and discoloration of a coating film after crosslinking.
Detailed Description
The technical scheme of the invention is further described by the following specific embodiments. It will be apparent to those skilled in the art that the examples are merely to aid in understanding the invention and are not to be construed as a specific limitation thereof.
The specific experimental procedures or conditions are not noted in the examples and may be followed by the operations or conditions of conventional experimental procedures described in the literature in this field. The reagents or apparatus used were conventional reagent products commercially available without the manufacturer's knowledge.
Example 1
An organosilicon coating consists of the following components in parts by weight: 40g of Xinyue KP-549 acrylic acid (ester) or polydimethylsiloxane copolymer, 80g of low-viscosity alpha, omega-dihydroxypolysiloxane (3000 Pa.s), 8g of polydimethylsiloxane (30000 relative molecular weight), 20g of white oil, 30g of fumed silica, 0.2g of antistatic agent, 13g of polymethyl nonafluorohexyl siloxane, 35g of methoxy PEG-10 propyl trimethoxysilane (3000 Pa.s), 2g of cross-linking agent, 0.5g of coupling agent, 0.03g of catalyst and 100g of solvent oil;
the coupling agent is formed by mixing isopropyl triisostearate titanate and gamma-methacryloxypropyl trimethoxysilane according to the mass ratio of 3:2; the white oil is 3# white oil; the antistatic agent is stearamidopropyl hydroxyethyl quaternary ammonium nitrate; the cross-linking agent is N-methylol acrylamide; the catalyst is platinum catalyst platinum (0) -1, 3-diethylene-1, 3-tetramethyl disiloxane; the solvent oil is prepared by mixing No. 120 and No. 150 solvent oil according to the mass ratio of 2:1;
the preparation method of the organic silicon coating comprises the following steps:
(1) Dehydrating each raw material to a water content of 0.3wt% or less;
(2) Adding Xinyue KP-549 acrylic acid (ester) copolymer/polydimethylsiloxane, low-viscosity alpha, omega-dihydroxyl polysiloxane, polydimethylsiloxane, white oil, fumed silica, polymethyl nonafluorohexyl siloxane and methoxy PEG-10 propyl trimethoxy silane into a planetary barrel, stirring and dispersing uniformly to obtain a mixture;
(3) Grinding the obtained mixture to a particle size of less than or equal to 40 mu m;
(4) Adding antistatic agent, cross-linking agent, coupling agent, catalyst and solvent oil into the ground mixture, vacuumizing, heating to 70-80 ℃, stirring for 1-2h, discharging and packaging.
Example 2
An organosilicon coating consists of the following components in parts by weight: 30g of a Sichuan KP-549 acrylic acid (ester)/polydimethylsiloxane copolymer and 100g of low-viscosity alpha, omega-dihydroxypolysiloxane (2000 mPa.s); 3g of polydimethylsiloxane (relative molecular mass: 30000); 30g of white oil, 40g of fumed silica, 2g of antistatic agent, 10g of polymethyl nonafluorohexyl siloxane (5000 Pa.s), 40g of methoxy PEG-10 propyl trimethoxy silane, 5g of cross-linking agent, 1g of coupling agent, 0.05g of catalyst and 300g of solvent oil;
the coupling agent is formed by mixing isopropyl triisostearate titanate and gamma-methacryloxypropyl trimethoxysilane according to the mass ratio of 3:2; the white oil is 3# white oil; the antistatic agent is alkyl dicarboxymethyl ammonium ethyllactone; the cross-linking agent is diacetone acrylamide; the catalyst is platinum catalyst platinum (0) -1, 3-diethylene-1, 3-tetramethyl disiloxane; the solvent oil is No. 120 solvent oil;
the preparation method of the organic silicon coating is the same as that of the example 1.
Example 3
An organosilicon coating consists of the following components in parts by weight: 50g of Xinyue KP-549 acrylic acid (ester) or polydimethylsiloxane copolymer, 60g of low-viscosity alpha, omega-dihydroxypolysiloxane (5000 mPa.s), 2g of polydimethylsiloxane (relative molecular weight: 50000), 17g of white oil, 20g of fumed silica, 1g of antistatic agent, 15g of polymethyl nonafluorohexyl siloxane (70000 mPa.s), 15g of methoxy PEG-10 propyl trimethoxysilane, 3g of cross-linking agent, 0.7g of coupling agent, 0.01g of catalyst and 250g of solvent oil;
the coupling agent is formed by mixing isopropyl triisostearate titanate and gamma-methacryloxypropyl trimethoxysilane according to the mass ratio of 3:2; the white oil is 3# white oil; the antistatic agent is dodecyl dimethyl quaternary ethylene internal salt; the cross-linking agent is divinylbenzene; the catalyst is platinum catalyst platinum (0) -1, 3-diethylene-1, 3-tetramethyl disiloxane; the solvent oil is prepared by mixing No. 120 solvent oil, no. 150 solvent oil and No. 200 solvent oil according to the mass ratio of 1:1:2;
the preparation method of the organic silicon coating is the same as that of the example 1.
Comparative example 1
An organosilicon coating consists of the following components in parts by weight: 120g of low-viscosity alpha, omega-dihydroxypolysiloxane (3000 Pa.s), 8g of polydimethylsiloxane (relative molecular weight: 30000), 20g of white oil, 30g of fumed silica, 0.2g of antistatic agent, 13g of polymethyl nonafluorohexyl siloxane, 35g of methoxy PEG-10 propyl trimethoxysilane (3000 Pa.s), 2g of cross-linking agent, 0.5g of coupling agent, 0.03g of catalyst and 100g of solvent oil;
the coupling agent is formed by mixing isopropyl triisostearate titanate and gamma-methacryloxypropyl trimethoxysilane according to the mass ratio of 3:2; the white oil is 3# white oil; the antistatic agent is stearamidopropyl hydroxyethyl quaternary ammonium nitrate; the cross-linking agent is N-methylol acrylamide; the catalyst is platinum catalyst platinum (0) -1, 3-diethylene-1, 3-tetramethyl disiloxane; the solvent oil is prepared by mixing No. 120 and No. 150 solvent oil according to the mass ratio of 2:1;
the preparation method of the organic silicon coating is the same as that of the example 1.
Comparative example 2
An organosilicon coating consists of the following components in parts by weight: 40g of Xinyue KP-549 acrylic acid (ester) or polydimethylsiloxane copolymer, 80g of high-viscosity alpha, omega-dihydroxypolysiloxane (30000 mPa.s), 8g of polydimethylsiloxane (relative molecular weight: 30000), 20g of white oil, 30g of fumed silica, 0.2g of antistatic agent, 13g of polymethyl nonafluorohexyl siloxane, 35g of methoxy PEG-10 propyl trimethoxysilane (3000 mPa.s), 2g of cross-linking agent, 0.5g of coupling agent, 0.03g of catalyst and 100g of solvent oil;
the coupling agent is formed by mixing isopropyl triisostearate titanate and gamma-methacryloxypropyl trimethoxysilane according to the mass ratio of 3:2; the white oil is 3# white oil; the antistatic agent is stearamidopropyl hydroxyethyl quaternary ammonium nitrate; the cross-linking agent is N-methylol acrylamide; the catalyst is platinum catalyst platinum (0) -1, 3-diethylene-1, 3-tetramethyl disiloxane; the solvent oil is prepared by mixing No. 120 and No. 150 solvent oil according to the mass ratio of 2:1;
the preparation method of the organic silicon coating is the same as that of the example 1.
Comparative example 3
An organosilicon coating was prepared in the same manner as in example 1, except that the coupling agent was isopropyl triisostearate titanate.
The preparation method of the organic silicon coating is the same as that of the example 1.
Comparative example 4
An organosilicon coating was prepared in the same manner as in example 1, except that the coupling agent was gamma-methacryloxypropyl trimethoxysilane.
The preparation method of the organic silicon coating is the same as that of the example 1.
Comparative example 5
An organosilicon coating consists of the following components in parts by weight: 40g of a KP-549 acrylic acid (ester)/polydimethylsiloxane copolymer, 115g of low-viscosity alpha, omega-dihydroxypolysiloxane (3000 Pa.s), 8g of polydimethylsiloxane (relative molecular weight: 30000), 20g of white oil, 30g of fumed silica, 0.2g of an antistatic agent, 13g of polymethyl nonafluorohexyl siloxane, 2g of a crosslinking agent, 0.5g of a coupling agent, 0.03g of a catalyst and 100g of solvent oil;
the coupling agent is formed by mixing isopropyl triisostearate titanate and gamma-methacryloxypropyl trimethoxysilane according to the mass ratio of 3:2; the white oil is 3# white oil; the antistatic agent is stearamidopropyl hydroxyethyl quaternary ammonium nitrate; the cross-linking agent is N-methylol acrylamide; the catalyst is platinum catalyst platinum (0) -1, 3-diethylene-1, 3-tetramethyl disiloxane; the solvent oil is prepared by mixing No. 120 and No. 150 solvent oil according to the mass ratio of 2:1;
the preparation method of the organic silicon coating is the same as that of the example 1.
Performance testing
Spraying the paint on an ABS engineering plastic plate by adopting a spray gun, and placing the ABS engineering plastic plate in a 50 ℃/24 h-10 ℃/24 high-low temperature alternating environment for circulation for 60 days, wherein the appearance, color, adhesive force and Shore hardness of the coating are all carried out after the circulation experiment is finished;
appearance and color: the technical indexes are as follows: fine and uniform flow, no bubbles, crust and impurities are qualified
Adhesion (MPa): the adhesion of the coating was measured using an adhesion tester.
Coating shore hardness/a: and the quality is less than or equal to 80.
The test results are shown in Table 1
Table 1 test results
| Appearance and color | Adhesion force | Shore hardness of the coating | |
| Example 1 | Qualified product | 2.16 | Qualified product |
| Example 2 | Qualified product | 2.01 | Qualified product |
| Example 3 | Qualified product | 2.32 | Qualified product |
| Comparative example 1 | Qualified product | 1.56 | Qualified product |
| Comparative example 2 | Qualified product | 1.42 | Qualified product |
| Comparative example 3 | Qualified product | 1.77 | Qualified product |
| Comparative example 4 | Qualified product | 1.82 | Qualified product |
| Comparative example 5 | Failure to pass | - | Failure to pass |
Analysis of results:
as can be seen from the comparison of the example 1 and the comparative example 1, in the absence of the believed KP-549 acrylic acid (ester) type/polydimethylsiloxane copolymer, the adhesive force of the coating is reduced, the copolymer has the functions of uniform film formation and capability of improving the flexibility of the film, and meanwhile, the adhesive force can be improved when the copolymer acts on the ABS engineering plastic;
as can be seen from a comparison of example 1 and comparative example 2, the low viscosity alpha, omega-dihydroxypolysiloxane is easier to cooperate with several film forming substances of acrylic acid (ester)/polydimethylsiloxane copolymer, polymethyl nine fluorohexyl siloxane and methoxy PEG-10 propyl trimethoxy silane in comparison with the high viscosity alpha, omega-dihydroxypolysiloxane, and the lower viscosity can improve the compactness and flexibility of the film forming, and the adhesive force can be improved when the adhesive is applied to ABS engineering plastics.
As can be seen from comparison of examples 1 and comparative examples 3 and 4, both materials have the effects of enhancing the adhesive strength between the plastic substrate and the resin coating film, preventing other media from penetrating to the interface and improving the interface state, and the isopropyl triisostearate titanate also has the effect of catalyzing and promoting the combination of the functional groups in the film-forming materials and unsaturated bonds in the plastic substrate, and the gamma-methacryloxypropyl trimethoxysilane can improve the dispersibility and compatibility of filler fumed silica in the resin, and the fumed silica and polydimethylsiloxane are used for defoaming and inhibiting foam in a synergic manner, so that the phenomena of orange peel, pinholes, sagging and the like of the coating film are avoided to influence the protective effect and the service life.
From a comparison of example 1 and comparative example 5, it was found that PEG-modified methoxy silane had a decisive effect on the hardness, adhesion of the coating after high and low temperature cycling. This may be due to the combination of long and flexible ethoxy units and acrylic structural units in the acrylic/polydimethylsiloxane copolymers, which maintain a more flexible film structure.
Meanwhile, although not explicitly shown here, the fluorosilicone resin is also indispensable in the formula, can obviously improve the weather resistance and acid and alkali resistance of the film, and is also very critical to the flexibility of the paint film.
The applicant states that the process of the invention is illustrated by the above examples, but the invention is not limited to, i.e. does not mean that the invention must be carried out in dependence on the above process steps. It should be apparent to those skilled in the art that any modification of the present invention, equivalent substitution of selected raw materials, addition of auxiliary components, selection of specific modes, etc. fall within the scope of the present invention and the scope of disclosure.
Claims (9)
1. The organic silicon coating is characterized by comprising the following components in parts by weight: 30-50 parts of Xinyue KP-549 acrylic acid (ester) or polydimethylsiloxane copolymer and 50-100 parts of low-viscosity alpha, omega-dihydroxypolysiloxane; 2-10 parts of polydimethylsiloxane, 10-30 parts of white oil, 20-40 parts of fumed silica, 10-15 parts of polymethyl nonafluorohexyl siloxane, 10-40 parts of methoxy PEG-10 propyl trimethoxy silane, 2-5 parts of cross-linking agent, 0.5-1 part of coupling agent, 0.01-0.05 part of catalyst and 100-300 parts of solvent oil;
wherein the viscosity of the low-viscosity alpha, omega-dihydroxypolysiloxane is 1000 mPa.s-5000 mPa.s; the relative molecular weight of the polydimethylsiloxane is 20000-50000;
the viscosity of the polymethyl nonafluorohexyl siloxane is 3000-7500 mPa.s, and the coupling agent is prepared by mixing isopropyl triisostearate titanate and gamma-methacryloxypropyl trimethoxysilane according to the mass ratio of 3:2.
2. A silicone coating according to claim 1, wherein the white oil is a # 3 white oil.
3. The silicone coating of claim 1, further comprising an antistatic agent, wherein the antistatic agent is one of stearamidopropyl hydroxyethyl quaternary amine nitrate, alkyl dicarboxymethyl ammonium ethyllactone, dodecyl dimethyl quaternary ethylinternal salt.
4. The silicone coating of claim 1, wherein the cross-linking agent is one of N-methylolacrylamide, divinylbenzene, diacetone acrylamide.
5. A silicone coating according to claim 1, wherein the catalyst is a platinum catalyst.
6. The silicone coating of claim 5, wherein the platinum catalyst is platinum (0) -1, 3-divinyl-1, 3-tetramethyldisiloxane.
7. The organic silicon coating according to claim 1, wherein the solvent oil is one or more of No. 120, no. 150 and No. 200 solvent oils.
8. A silicone coating according to claim 1, wherein the silicone coating is applied in the form of a spray.
9. A method for preparing the organic silicon coating according to any one of claims 1 to 8, comprising the steps of:
(1) Dehydrating each raw material to a water content of 0.3wt% or less;
(2) Adding Xinyue KP-549 acrylic acid (ester) copolymer/polydimethylsiloxane, low-viscosity alpha, omega-dihydroxyl polysiloxane, polydimethylsiloxane, white oil, fumed silica, polymethyl nonafluorohexyl siloxane and methoxy PEG-10 propyl trimethoxy silane into a planetary barrel, stirring and dispersing uniformly to obtain a mixture;
(3) Grinding the obtained mixture to a particle size of less than or equal to 40 mu m;
(4) Adding antistatic agent, cross-linking agent, coupling agent, catalyst and solvent oil into the ground mixture, vacuumizing, heating to 70-80 ℃, stirring for 1-2h, discharging and packaging.
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| US7198205B1 (en) * | 2003-07-24 | 2007-04-03 | Anderson & Associates, Llc | Silicone protective coating |
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| CN112646545A (en) * | 2020-12-18 | 2021-04-13 | 深圳市康利邦科技有限公司 | Self-adhesive liquid silicone rubber preparation capable of spraying and preparation method thereof |
| US20210301171A1 (en) * | 2018-08-02 | 2021-09-30 | Akzo Nobel Coatings International B.V. | Coating Composition Comprising Polysiloxane-Modified Polyurethane for Soft-Feel, Stain Resistant Coatings |
| CN114269863A (en) * | 2019-08-22 | 2022-04-01 | 日东化成株式会社 | Antifouling coating composition |
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2023
- 2023-04-10 CN CN202310383121.8A patent/CN116218365A/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7198205B1 (en) * | 2003-07-24 | 2007-04-03 | Anderson & Associates, Llc | Silicone protective coating |
| CN105086823A (en) * | 2015-05-28 | 2015-11-25 | 浙江凌志精细化工有限公司 | Organosilicone room-temperature-cured anticorrosive coating material |
| CN108841325A (en) * | 2018-07-18 | 2018-11-20 | 合肥欧仕嘉机电设备有限公司 | A kind of high-voltage electrical equipment coatings and preparation method thereof |
| US20210301171A1 (en) * | 2018-08-02 | 2021-09-30 | Akzo Nobel Coatings International B.V. | Coating Composition Comprising Polysiloxane-Modified Polyurethane for Soft-Feel, Stain Resistant Coatings |
| CN109181532A (en) * | 2018-09-18 | 2019-01-11 | 湖北兴瑞硅材料有限公司 | A kind of room temperature curing organosilicon coating and preparation method thereof |
| CN114269863A (en) * | 2019-08-22 | 2022-04-01 | 日东化成株式会社 | Antifouling coating composition |
| CN112646545A (en) * | 2020-12-18 | 2021-04-13 | 深圳市康利邦科技有限公司 | Self-adhesive liquid silicone rubber preparation capable of spraying and preparation method thereof |
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