CN111793428A - Environment-friendly building coating and construction method - Google Patents
Environment-friendly building coating and construction method Download PDFInfo
- Publication number
- CN111793428A CN111793428A CN202010745656.1A CN202010745656A CN111793428A CN 111793428 A CN111793428 A CN 111793428A CN 202010745656 A CN202010745656 A CN 202010745656A CN 111793428 A CN111793428 A CN 111793428A
- Authority
- CN
- China
- Prior art keywords
- coating
- parts
- environment
- agent
- base surface
- 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.)
- Pending
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 91
- 239000011248 coating agent Substances 0.000 title claims abstract description 86
- 238000010276 construction Methods 0.000 title claims abstract description 24
- 229920002050 silicone resin Polymers 0.000 claims abstract description 32
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 27
- 235000011089 carbon dioxide Nutrition 0.000 claims abstract description 22
- 239000002105 nanoparticle Substances 0.000 claims abstract description 20
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims abstract description 19
- 229910001634 calcium fluoride Inorganic materials 0.000 claims abstract description 19
- 239000007822 coupling agent Substances 0.000 claims abstract description 17
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229920005989 resin Polymers 0.000 claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 14
- 239000011148 porous material Substances 0.000 claims abstract description 12
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 9
- 239000010703 silicon Substances 0.000 claims abstract description 9
- 239000003085 diluting agent Substances 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 18
- 239000011344 liquid material Substances 0.000 claims description 14
- 239000011259 mixed solution Substances 0.000 claims description 13
- 238000005507 spraying Methods 0.000 claims description 13
- 239000002518 antifoaming agent Substances 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000003973 paint Substances 0.000 claims description 8
- 239000004952 Polyamide Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 229920002647 polyamide Polymers 0.000 claims description 7
- 230000001680 brushing effect Effects 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 238000005498 polishing Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 238000009736 wetting Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 claims 4
- 238000009834 vaporization Methods 0.000 claims 1
- 230000008016 vaporization Effects 0.000 claims 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 18
- 230000001699 photocatalysis Effects 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 7
- 238000013032 photocatalytic reaction Methods 0.000 abstract description 6
- 150000003376 silicon Chemical class 0.000 abstract description 5
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- 238000006555 catalytic reaction Methods 0.000 abstract 1
- 239000011941 photocatalyst Substances 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 24
- 239000000463 material Substances 0.000 description 12
- 238000010521 absorption reaction Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 6
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 230000005284 excitation Effects 0.000 description 4
- 238000009472 formulation Methods 0.000 description 4
- 238000002309 gasification Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- -1 rare earth ions Chemical class 0.000 description 3
- 229910052761 rare earth metal Inorganic materials 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004020 luminiscence type Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000005215 recombination Methods 0.000 description 2
- 230000006798 recombination Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 150000002466 imines Chemical class 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 231100001240 inorganic pollutant Toxicity 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 238000007709 nanocrystallization Methods 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 125000005375 organosiloxane group Chemical group 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229920002866 paraformaldehyde Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000005476 size effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 238000005303 weighing 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
- C09D183/04—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
- 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
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/02—Coverings or linings, e.g. for walls or ceilings of plastic materials hardening after applying, e.g. plaster
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/16—Halogen-containing compounds
- C08K2003/162—Calcium, strontium or barium halides, e.g. calcium, strontium or barium chloride
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Architecture (AREA)
- Inorganic Chemistry (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
- Paints Or Removers (AREA)
Abstract
The invention relates to an environment-friendly building coating and a construction method, wherein the coating comprises the following components in parts by weight: 80-100 parts of silicone resin; 1-2 parts of dry ice; CaF2(Er3+) 5-10 parts of nano particles; 0.5-4 parts of nano titanium dioxide; 0.25-0.60 parts of a coupling agent; 10-15 parts of a curing agent; 0.5-10 parts of an auxiliary agent. The environment-friendly building coating has the advantages that the dry ice is doped into the silicon resin, so that the coating has a large number of communicated pores, can perform three-dimensional and crossed photocatalytic reactions, and has a good catalytic reaction effect. With simultaneous use of CaF2(Er3+) When the nanoparticles are irradiated by visible light, the generated photoproduction cavities have stronger oxidation capacity, the photocatalytic performance of TiO2 is improved, and the photocatalyst is combined with the carrier of modified silicon resinBody action, further improves TiO2The photocatalytic performance of (a). The coating can be widely applied to various concrete substrates to form coatings, and TiO in the photocatalytic coating is utilized to form coatings2The generated electrons purify the air.
Description
Technical Field
The invention relates to the technical field of building coating materials and construction, in particular to an environment-friendly building coating and a construction method.
Background
With the rapid development of industry, the pollution of nitrogen oxides and sulfides in the atmosphere is increasingly severe, and TiO2The photocatalytic coating is produced according to the following principle: when UV light irradiates the coating, TiO2The generated electron-hole pair can decompose organic or inorganic pollutants in the air, such as nitrogen oxides, sulfur dioxide, formaldehyde, mercury and the like, thereby achieving the effect of purifying the air. But the reaction conditions of the titanium dioxide nano-pole material are very harsh, the photocatalytic reaction can only occur under the condition of ultraviolet excitation, but the proportion of ultraviolet in the solar spectrum is very low, and the light energy conversion rate is not ideal; in addition, titanium dioxide not only catalyzes pollutants, but also catalyzes self organic matters of the coating, so that the service life and the use of the coating are influenced; finally, how to solve the problem of recombination of photo-generated electrons and photo-generated holes is the focus of our discussion. These problems are urgently needed to be solved.
The traditional improved ultraviolet absorption method adopts red shift of material absorption edge, such as ion doping, noble metal deposition and semiconductor compounding to TiO2The modification is carried out so that the absorption edge is red-shifted to make it possible to utilize visible light in sunlight. But the oxidation capability of the holes excited by light with different wavelengths is obviously different, the holes generated by ultraviolet light excitation have stronger oxidability, and meanwhile, the holes with stronger oxidability can also react with water molecules to generate hydroxyl radicals with strong oxidability, which is also beneficial to the photocatalytic reaction, so that pollutants are completely mineralized.
Disclosure of Invention
In view of the above, there is a need to provide an environmentally friendly architectural coating with good catalytic effect and a construction method thereof, which is prepared by CaF2(Er3+) The nano-particles firstly convert visible light into energy which can be converted into nano TiO2Directly absorb the ultraviolet light and improve the nano TiO2And providing steric, cross-linking by modified silicone resinA photocatalytic reaction carrier of fork.
An environment-friendly architectural coating comprises the following components in parts by weight: 80-100 parts of silicone resin; 1-2 parts of dry ice; CaF2(Er3+) 5-10 parts of nano particles; 0.5-4 parts of nano titanium dioxide; 0.25-0.60 parts of a coupling agent; 10-15 parts of a curing agent; 0.5-10 parts of an auxiliary agent.
Further, the solid content of the silicone resin is more than 50 wt%, the silicone resin is provided with micropores, and the dry ice is mixed in the silicone resin and is discharged from the micropores of the silicone resin through gasification, so that communicated pores are formed inside the coating.
Further, the CaF2(Er3+) The particle size of the nano particles is less than 100nm, and the particle size of the nano titanium dioxide is less than 5 nm.
Further, the auxiliary agent comprises a diluent, an antifoaming agent and a leveling agent, wherein the diluent is 0.1-0.3 part by weight, the antifoaming agent is 0.1-0.3 part by weight, and the leveling agent is 0.1-0.3 part by weight.
Further, the coupling agent is KH-550 coupling agent, and the curing agent is 650 polyamide.
Further, the CaF2(Er3+) The weight portion of the nano particles is 8-10, and the weight portion of the nano titanium dioxide is 1.5-3.
And, a construction method of the environment-friendly architectural coating, which comprises the following steps:
preparing a liquid material: CaF is weighed according to a predetermined proportion2(Er3+) Mixing the nano particles, nano titanium dioxide and a coupling agent to form a mixed solution, magnetically stirring, ultrasonically dispersing, adding silicon resin and an auxiliary agent into the mixed solution according to a predetermined proportion, and stirring again to prepare a liquid material;
forming a coating: pouring dry ice and a curing agent into the liquid material according to a preset proportion, stirring for 5-10 min to prepare a coating, and standing for later use;
after the base surface to be constructed is pretreated, coating is coated on the base surface to form an environment-friendly coating;
the components and the predetermined ratio in the steps are the components and the ratio in the environment-friendly architectural coating.
Further, the stirring speed of the mixed solution is more than 1000r/min, the mixed solution is stirred after a diluent is added, the stirring time of two positions in the prepared liquid material is 20-40 minutes respectively, and the ultrasonic dispersion time is 20-40 minutes.
Further, the construction base surface pretreatment comprises the following steps: and (3) polishing and flattening the base surface to be constructed, removing impurities of the base surface, spraying water for cleaning, wetting, and airing until the base surface has no water stain.
Furthermore, the environment-friendly coating formed on the construction base surface is finished by 1-3 layers of brushing, the total brushing thickness reaches more than 50 micrometers, and the brushing is carried out by adopting a pressure spraying construction mode.
The environment-friendly building coating at least has the following advantages:
1. the thermosetting polyorganosiloxane in which the silicone resin has a highly crosslinked structure has excellent heat resistance, weather resistance, hydrophobicity, adhesion, flexibility, and the like, compared with other organic resins, due to its special structure. The silicone resin has a three-dimensional network structure and has very excellent water vapor permeability because its main chain contains 80% of inorganic silicon and oxygen. The silicone resin coating has rich and uniform pore structure and has the characteristics of low density, high specific surface area and the like.
2. The silicon resin is doped with dry ice which is easy to gasify, and the silicon resin is modified by doping the silicon resin coating. Pores are formed in the coating through the gasification of the carbon dioxide and the discharge of the carbon dioxide from the micropores of the silicone resin, and the larger the adding amount of the dry ice is, the more gas is generated in the volatilization process, and a large number of communicated pores are formed in the coating; the modified silicone resin coating has a large number of communicated pores, can perform three-dimensional and crossed photocatalytic reactions, has a good catalytic effect, and the reaction effect is far greater than that of a coating prepared from a traditional polymer emulsion with the photocatalytic effect only occurring on the outermost surface of the coating.
3. Using CaF2(Er3+) As an up-conversion material, the material has the strongest absorption to visible light at 480nm and emits ultraviolet light in a band of 320-380 nm. When visible light irradiates CaF2(Er3+) When granulated, CaF2(Er3+) First converting visible light into energy capable of being converted into TiO2Direct absorption of the UV light used and subsequent transfer to the TiO2The photogenerated holes generated by ultraviolet irradiation have stronger oxidizing ability, thereby improving TiO2The photocatalytic performance of the modified silicon resin is combined with the carrier effect of the modified silicon resin, so that the TiO is further improved2The photocatalytic performance of (a).
Detailed Description
The present invention will be described in detail with reference to specific examples.
The embodiment of the invention provides an environment-friendly building coating which comprises the following components in parts by weight: 80-100 parts of silicone resin; 1-2 parts of dry ice; CaF2(Er3+) 5-10 parts of nano particles; 0.5-4 parts of nano titanium dioxide; 0.25-0.60 parts of a coupling agent; 10-15 parts of a curing agent; 0.5-10 parts of an auxiliary agent.
Specifically, the solid content of the silicone resin is more than 50 wt%, the silicone resin is provided with micropores, and the dry ice is mixed in the silicone resin and is discharged from the micropores of the silicone resin through gasification, so that communicated pores are formed inside the coating. The silicone resin coating has rich and uniform pore structure and has the characteristics of low density, high specific surface area and the like. The silicone resin is a thermosetting polyorganosiloxane having a highly crosslinked structure. Due to the special structure, compared with other organic resins, the organic resin has excellent heat resistance, weather resistance, hydrophobicity, adhesive force, flexibility and the like. The silicone resin has a three-dimensional network structure and has very excellent water vapor permeability because its main chain contains 80% of inorganic silicon and oxygen.
According to the embodiment of the invention, dry ice is doped, the dry ice is easy to gasify, and after the silicone resin coating is doped, the silicone resin is modified. Pores are formed inside the coating material by the gasification of the carbon dioxide and the discharge from the micropores of the silicone resin, and the larger the amount of the added dry ice, the more gas is generated during the volatilization of the dry ice, and a large number of connected pores are formed in the coating material.
The dry ice modified silicone resin coating has a large number of communicated pores, can perform three-dimensional and crossed photocatalytic reactions, and has a reaction effect far greater than that of a coating prepared from a traditional polymer emulsion with a photocatalytic effect only occurring on the outermost surface of the coating.
CaF2 (Er) is adopted in the embodiment of the invention3+) The upconversion luminescence is also called upconversion luminescence of rare earth ions as an upconversion material, and refers to a phenomenon in which excitation light having a long wavelength is absorbed and light having a short wavelength is emitted. The upconversion luminescent material generally refers to a material that emits light having a shorter wavelength than an excitation wavelength when excited by light. The up-conversion luminescent material is mainly a solid compound doped with rare earth ions, and the principle is to absorb a plurality of long-wave radiations with low energy by utilizing the metastable energy level characteristics of the rare earth ions so as to emit light with shorter wavelength.
The nano material has small size effect, quantum effect and inducing effect, so that the light absorption band is blue shifted, and the smaller the nano size is, the stronger the blue shift phenomenon is. Meanwhile, the nano material can better solve the problem of the recombination of photo-generated electrons and photo-generated holes. The conventional material without absorption capacity in the ultraviolet band generates wide-band strong ultraviolet absorption capacity through the modification of a nanocrystallization technology. Thus, CaF of embodiments of the invention2(Er3+) The particle size of the nano-particles is preferably below 100nm, and the particle size of the nano-titanium dioxide is below 5 nm. By nano-sized CaF2(Er3+) Particles converting visible light into energy capable of being TiO2Direct absorption of the UV light used and subsequent transfer to the TiO2The photogenerated holes generated by ultraviolet irradiation have stronger oxidizing ability, thereby improving TiO2The photocatalytic performance of the modified silicon resin is combined with the carrier effect of the modified silicon resin, so that the TiO is further improved2The photocatalytic performance of (a).
In a preferred embodiment, the CaF2(Er3+) The weight portion of the nano particles is preferably 8-10 parts, and the weight portion of the nano titanium dioxide is preferably 1.5-3 parts.
Specifically, the auxiliary agent comprises a proper amount of diluent, an antifoaming agent and a leveling agent, wherein the diluent is preferably 0.1-0.3 part by weight, the antifoaming agent is preferably 0.1-0.3 part by weight, and the leveling agent is preferably 0.1-0.3 part by weight. The diluent is preferably a paint diluent, in particular one of a nitro-acid diluent, an amino paint diluent or an acrylic paint diluent. The defoaming agent is preferably one of organosiloxane, amine, imine and amide, and has the advantages of higher defoaming speed and longer foam inhibition time. The leveling agent is preferably a solvent type leveling agent or a paint leveling agent, so that the surface tension of the finishing liquid can be effectively reduced, and the leveling property and uniformity of the finishing liquid are improved.
Preferably, the coupling agent is KH-550 coupling agent and the curing agent is 650 polyamide.
The embodiment of the invention also provides a construction method of the environment-friendly building coating, which comprises the following steps:
step S01, preparing a liquid material: CaF is weighed according to a predetermined proportion2(Er3+) Mixing the nano particles, nano titanium dioxide and a coupling agent to form a mixed solution, magnetically stirring, ultrasonically dispersing, adding silicon resin and an auxiliary agent into the mixed solution according to a predetermined proportion, and stirring again to prepare a liquid material;
step S02, forming a paint: pouring dry ice and a curing agent into the liquid material according to a preset proportion, stirring for 5-10 min to prepare a coating, and standing for later use;
and step S03, after the base surface to be constructed is pretreated, coating the coating on the base surface to form the environment-friendly coating.
In step S01, the stirring speed of the mixed solution is more than 1000r/min, the mixed solution is stirred after a diluent is added, the stirring time of two positions in the prepared liquid material is 20-40 minutes respectively, and the ultrasonic dispersion time is 20-40 minutes.
In step S03, the construction base surface pretreatment includes the steps of: and (3) polishing and flattening the base surface to be constructed, removing impurities of the base surface without floating dust, spraying water for cleaning and wetting, and airing until the base surface has no water stain. The pressure spraying construction is preferably adopted in the embodiment, the number of the coatings is 1-3, the total spraying thickness reaches more than 50 mu m, and the subsequent painting can be carried out after the surface of the previous coating is dry and does not stick to the hand. In the coating manufacturing and construction process, attention should be paid to strengthening field ventilation and fire prevention, and operators should pay attention to labor protection.
The following examples are provided to illustrate the environmental-friendly building coating with different formulation ratios of different components and the construction method thereof, and the parts are all parts by weight.
Example 1
The preparation process of the environment-friendly architectural coating of the embodiment 1 is as follows:
weighing CaF in proportion2(Er3+) Pouring nanoparticles, nano titanium dioxide and a KH-55O coupling agent into a proper amount of diluent, magnetically stirring for 30min under the condition of 1000r/min, then ultrasonically dispersing for 30min, adding the mixed solution into silicone resin, a defoaming agent and a leveling agent according to a proportion, and stirring for 30min on a stirrer to prepare a liquid material.
And pouring dry ice and 650 polyamide (curing agent) into the liquid material according to a proportion, stirring for 5-10 min on a stirrer to prepare a coating, and standing for more than 5 min.
The construction process is as follows:
and (3) polishing and flattening the base surface to be constructed, removing impurities of the base surface without floating dust, carrying out water spray cleaning and wetting treatment, and airing until the base surface is free from water stains. The pressure spraying construction is adopted, the coating is 1-3 layers, the total spraying thickness reaches more than 50 mu m, and the subsequent coating can be carried out after the surface of the previous coating is dry and does not stick to the hand. In the coating manufacturing and construction process, attention should be paid to strengthening field ventilation and fire prevention, and operators should pay attention to labor protection.
The formulation of the environmentally friendly architectural coating of this example 1 is as follows:
silicone resin: 100 portions of
650 polyamide: 12 portions of
CaF2(Er3+) Nano-particles: 5 portions of
Nano titanium dioxide: 0.5 portion
Dry ice: 1.2 parts of
KH-550 coupling agent: 0.25 part
Diluent agent: 0.1 part
Defoaming agent: 0.1 part
Leveling agent: 0.1 part
Coating thickness of 50 μm
Example 2
The environment-friendly building coating is prepared according to the same steps of the embodiment 1, after the concrete base surface is pretreated, the pressure spraying construction is adopted, the coating is 3 layers, the total spraying thickness reaches more than 50 mu m, and the subsequent coating can be carried out after the surface of the previous coating is dry and does not stick to the hands.
The formulation of example 2 is as follows:
silicone resin: 100 portions of
650 polyamide: 12 portions of
CaF2(Er3+) Nano-particles: 8 portions of
Nano titanium dioxide: 1.5 parts of
Dry ice: 1.2 parts of
KH-550 coupling agent: 0.35 part
Diluent agent: 0.2 part
Defoaming agent: 0.2 part
Leveling agent: 0.2 part
Coating thickness of 50 mu mm
Example 3
The environment-friendly building coating is prepared according to the same steps as in example 1, after the concrete base surface is pretreated, the pressure spraying construction is adopted, the coating is 3 layers, the total spraying thickness reaches 60 mu m, and the subsequent coating can be carried out after the surface of the previous coating is dried and does not stick to hands.
The formulation of example 3 is as follows:
silicone resin: 100 portions of
650 polyamide: 12 portions of
CaF2(Er3+) Nano-particles: 10 portions of
Nano titanium dioxide: 3 portions of
Dry ice: 1.2 parts of
KH-550 coupling agent: 0.40 portion
Diluent agent: 0.3 part
Defoaming agent: 0.3 part
Leveling agent: 0.3 part
Coating thickness of 50 mu mm
The coatings formed in the three examples are subjected to a photocatalytic test, and the photocatalytic performance of the coatings of each example is tested, so that the data in the following table are obtained.
Photocatalytic formaldehyde degradation efficiency
| Numbering | Initial concentration of Formaldehyde (mg/l) | Degradation Rate (%) |
| Example 1 | 1.5 | 89.26 |
| Example 2 | 1.5 | 94.52 |
| Example 3 | 1.5 | 98.60 |
The photocatalytic formaldehyde degradation rate test is as follows: the coating plate and a proper amount of paraformaldehyde powder are horizontally placed in a reactor, sealed, vacuumized and heated to be completely vaporized. After cooling and adsorption balance, taking out the coating plate and dividing the coating plate into two equal halves, wherein one half is used for measuring the amount of formaldehyde adsorbed by the coating film and is used as the initial concentration of the formaldehyde; the other half was used for the light experiment, which was placed horizontally in a clean reactor to seal the system and illuminated under an ultraviolet lamp. Standing for a certain time after the illumination is finished, and measuring the concentration of the gaseous formaldehyde in the reactor and the formaldehyde amount absorbed by the coating plate as the residual amount of the formaldehyde after the illumination. As can be seen from the data in the above table, the photocatalytic performance of example 3 is better than that of example 2, and the photocatalytic performance of example 2 is better than that of example 1.
It should be noted that the present invention is not limited to the above-mentioned embodiments, and other changes and modifications can be made by those skilled in the art according to the spirit of the present invention, and these changes and modifications made according to the spirit of the present invention should be included in the scope of the present invention as claimed.
Claims (10)
1. An environment-friendly architectural coating comprises the following components in parts by weight:
80-100 parts of silicone resin;
1-2 parts of dry ice;
CaF2(Er3+) 5-10 parts of nano particles;
0.5-4 parts of nano titanium dioxide;
0.25-0.60 parts of a coupling agent;
10-15 parts of a curing agent;
0.5-10 parts of an auxiliary agent.
2. The environment-friendly architectural coating according to claim 1, wherein the solid content of the silicone resin is 50 wt% or more, the silicone resin has micropores, and the dry ice incorporated in the silicone resin is discharged from the micropores of the silicone resin by vaporization to form connected pores inside the coating.
3. The environmentally friendly architectural coating of claim 1, wherein the CaF2(Er3+) The particle size of the nano particles is less than 100nm, and the particle size of the nano titanium dioxide is less than 5 nm.
4. The environment-friendly building coating as claimed in claim 1, wherein the auxiliary agent comprises a diluent, an antifoaming agent and a leveling agent, wherein the diluent is 0.1 to 0.3 part by weight, the antifoaming agent is 0.1 to 0.3 part by weight, and the leveling agent is 0.1 to 0.3 part by weight.
5. The environmentally friendly architectural coating of claim 1, wherein the coupling agent is a KH-550 coupling agent and the curing agent is 650 polyamide.
6. The method of claim 1The environment-friendly building coating is characterized in that the CaF2(Er3+) The weight portion of the nano particles is 8-10, and the weight portion of the nano titanium dioxide is 1.5-3.
7. An environment-friendly building coating construction method comprises the following steps:
preparing a liquid material: CaF is weighed according to a predetermined proportion2(Er3+) Mixing the nano particles, nano titanium dioxide and a coupling agent to form a mixed solution, magnetically stirring, ultrasonically dispersing, adding silicon resin and an auxiliary agent into the mixed solution according to a predetermined proportion, and stirring again to prepare a liquid material;
forming a coating: pouring dry ice and a curing agent into the liquid material according to a preset proportion, stirring for 5-10 min to prepare a coating, and standing for later use;
after the base surface to be constructed is pretreated, coating is coated on the base surface to form an environment-friendly coating;
the components and their predetermined proportions in the above steps are according to the components and proportions in the environment-friendly architectural coating as described in any one of claims 1 to 6.
8. The construction method of environmental building paint as claimed in claim 7, wherein the stirring speed of the mixed solution is above 1000r/min, the mixed solution is stirred after adding the diluent, the stirring time of two positions in the preparation of the liquid material is 20-40 minutes, and the ultrasonic dispersion time is 20-40 minutes.
9. The method for applying environmental building paint according to claim 7, wherein the pretreatment of the application base surface comprises the following steps: and (3) polishing and flattening the base surface to be constructed, removing impurities of the base surface, spraying water for cleaning, wetting, and airing until the base surface has no water stain.
10. The construction method of environmental building paint as claimed in claim 7, wherein the environmental coating formed on the construction base surface is finished by 1-3 layers of brushing, the total brushing thickness is more than 50 μm, and the brushing is performed by pressure spraying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010745656.1A CN111793428A (en) | 2020-07-29 | 2020-07-29 | Environment-friendly building coating and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010745656.1A CN111793428A (en) | 2020-07-29 | 2020-07-29 | Environment-friendly building coating and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111793428A true CN111793428A (en) | 2020-10-20 |
Family
ID=72828366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010745656.1A Pending CN111793428A (en) | 2020-07-29 | 2020-07-29 | Environment-friendly building coating and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111793428A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112755754A (en) * | 2021-01-04 | 2021-05-07 | 深圳市奇信集团股份有限公司 | Aldehyde-removing water-absorbing resin ball and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1696219A (en) * | 2004-05-11 | 2005-11-16 | 张海波 | Environmental protection type Nano Coating |
| CN1854222A (en) * | 2005-04-26 | 2006-11-01 | 上海温兴生物工程有限公司 | Environmental-protective light catalyst pigment for walls |
| CN101642702A (en) * | 2009-09-09 | 2010-02-10 | 吉林大学 | Red light or infrared light catalytic material comprising semiconductor material and up-conversion material |
| CN104497858A (en) * | 2014-12-15 | 2015-04-08 | 青岛益群漆业集团有限公司 | Nano super weather-resistant fireproof coating |
| CN109401405A (en) * | 2018-11-01 | 2019-03-01 | 香港生产力促进局 | With the antimicrobial coating and preparation method thereof of photon up-conversion preparation |
-
2020
- 2020-07-29 CN CN202010745656.1A patent/CN111793428A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1696219A (en) * | 2004-05-11 | 2005-11-16 | 张海波 | Environmental protection type Nano Coating |
| CN1854222A (en) * | 2005-04-26 | 2006-11-01 | 上海温兴生物工程有限公司 | Environmental-protective light catalyst pigment for walls |
| CN101642702A (en) * | 2009-09-09 | 2010-02-10 | 吉林大学 | Red light or infrared light catalytic material comprising semiconductor material and up-conversion material |
| CN104497858A (en) * | 2014-12-15 | 2015-04-08 | 青岛益群漆业集团有限公司 | Nano super weather-resistant fireproof coating |
| CN109401405A (en) * | 2018-11-01 | 2019-03-01 | 香港生产力促进局 | With the antimicrobial coating and preparation method thereof of photon up-conversion preparation |
Non-Patent Citations (3)
| Title |
|---|
| 上海化工学院等: "《玻璃钢工艺学》", 31 December 1979, 中国建筑工业出版社 * |
| 夏文干等: "《胶接手册》", 28 February 1982, 国防工业出版社 * |
| 张学铭等: "《化学小辞典 第2版》", 31 August 1994, 科学技术文献出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112755754A (en) * | 2021-01-04 | 2021-05-07 | 深圳市奇信集团股份有限公司 | Aldehyde-removing water-absorbing resin ball and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Nawi et al. | Immobilized bilayer TiO2/chitosan system for the removal of phenol under irradiation by a 45 watt compact fluorescent lamp | |
| CN109622048A (en) | A kind of photocatalysis film and preparation method thereof | |
| CN110743357B (en) | Formaldehyde removal liquid added with biological enzyme auxiliary agent and preparation method thereof | |
| CN118048075A (en) | Fireproof interior wall coating with visible light catalysis, and preparation and application thereof | |
| CN107353680A (en) | A kind of light catalyzed coating and its preparation method and application | |
| CN111793428A (en) | Environment-friendly building coating and construction method | |
| CN110075895A (en) | A kind of carbon nitrence-zinc sulphide composite nano materials and its preparation method and application | |
| US20230082072A1 (en) | Protective coating layer, and preparation method and use thereof | |
| CN102208554B (en) | Substrate for flexible luminous device and preparation method thereof | |
| CN112724789A (en) | Outdoor ultraviolet-resistant wear-resistant epoxy floor coating and preparation method thereof | |
| CN107151941B (en) | Photocatalyst suspension, resist blocking and that automatically cleaning wood-based plate facing paper and preparation method thereof | |
| CN106046863A (en) | Preparation method for multifunctional TiO2 nano-paint | |
| CN104399532A (en) | Photocatalyst solution for formaldehyde degradation under visible light, and preparation method thereof | |
| CN109888042B (en) | Solar cell back plate and preparation method thereof | |
| CN102208556A (en) | Flexible substrate used in luminescent device and preparation method thereof | |
| CN1318136C (en) | Nanometer catalyst for used under sunlight and its prepn. method | |
| CN114790361B (en) | Three-proofing coating based on EB curing | |
| KR20120051188A (en) | Menufacturing method of luninescent paint | |
| CN110194865A (en) | A kind of plastic matrix and preparation method of road guard purification vehicle exhaust | |
| KR101240590B1 (en) | Luninescent paint | |
| CN114181593A (en) | Water-based zinc-coated resin compound and preparation method and application thereof | |
| CN102270749A (en) | Base plate used for flexible light-emitting device and preparation method thereof | |
| CN110408243B (en) | Visible light photocatalytic function base coat containing quantum dots and preparation method thereof | |
| CN111774061A (en) | Photocatalyst composite coating and preparation method thereof | |
| Sharif et al. | Effect of ZnO-GO Particles on the Photopolymerization and Photo-Cleaning of Epoxy Coating |
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 | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 338000 1501, 1601 and 1701, building 18 (complex building), Baile village, No. 718, Yuxiu East Avenue, north of the city, Yushui District, Xinyu City, Jiangxi Province Applicant after: Jiangxi Qixin Group Co.,Ltd. Address before: 518000 12 / F-16 / F, block B, Haina Baichuan headquarters building, 6 Baoxing Road, Haiwang community, Xin'an street, Bao'an District, Shenzhen City, Guangdong Province Applicant before: Shenzhen Qixin Group Co.,Ltd. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201020 |