CN113897131A - Anti-graffiti anti-sticking material and preparation method and application thereof - Google Patents
Anti-graffiti anti-sticking material and preparation method and application thereof Download PDFInfo
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- CN113897131A CN113897131A CN202011540209.9A CN202011540209A CN113897131A CN 113897131 A CN113897131 A CN 113897131A CN 202011540209 A CN202011540209 A CN 202011540209A CN 113897131 A CN113897131 A CN 113897131A
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- 239000000463 material Substances 0.000 title claims abstract description 54
- 238000002360 preparation method Methods 0.000 title claims abstract description 46
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims abstract description 51
- 239000004611 light stabiliser Substances 0.000 claims abstract description 49
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 31
- 229920002545 silicone oil Polymers 0.000 claims abstract description 31
- -1 polydimethylsiloxane Polymers 0.000 claims abstract description 30
- 239000004205 dimethyl polysiloxane Substances 0.000 claims abstract description 28
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims abstract description 28
- 229920005989 resin Polymers 0.000 claims abstract description 25
- 239000011347 resin Substances 0.000 claims abstract description 25
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 25
- 239000010703 silicon Substances 0.000 claims abstract description 25
- 239000002994 raw material Substances 0.000 claims abstract description 24
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 23
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims abstract description 19
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000007822 coupling agent Substances 0.000 claims abstract description 9
- 229920002050 silicone resin Polymers 0.000 claims description 32
- 238000002156 mixing Methods 0.000 claims description 31
- 150000001412 amines Chemical class 0.000 claims description 14
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 14
- 239000012964 benzotriazole Substances 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 230000032683 aging Effects 0.000 abstract description 9
- 239000002904 solvent Substances 0.000 abstract description 5
- 230000000052 comparative effect Effects 0.000 description 19
- 239000011248 coating agent Substances 0.000 description 7
- 239000008199 coating composition Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 238000004132 cross linking Methods 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 201000004681 Psoriasis Diseases 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 208000017667 Chronic Disease Diseases 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction 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
- C09D7/48—Stabilisers against degradation by oxygen, light or heat
-
- 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
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2312/00—Crosslinking
- C08L2312/08—Crosslinking by silane
Abstract
The invention provides an anti-graffiti anti-sticking material and a preparation method and application thereof, wherein the anti-graffiti anti-sticking material comprises A, B two components, and the preparation raw materials of the component A comprise the following components in percentage by weight: 15-20% of an aminosilane coupling agent, 70-80% of hydroxyl silicone oil and 5-10% of polydimethylsiloxane; the preparation raw materials of the component B comprise the following components in percentage by weight: 162-66% of siloxane-based organic silicon resin, 225-27% of siloxane-based organic silicon resin, 2-3% of light stabilizer and 5-10% of isopropanol; the weight ratio of the component A to the component B is 1: 4-1: 6. The invention adds siloxane-based organic silicon resin, hydroxyl silicone oil, polydimethylsiloxane and light stabilizer to make the prepared anti-graffiti and anti-sticking material have the performances of graffiti resistance, sticking resistance, scratch resistance, solvent resistance and weather aging resistance, and is suitable for the fields of outdoor facility protection or industrial product protection and the like.
Description
Technical Field
The invention belongs to the technical field of protective functional materials for outdoor facilities, and relates to an anti-doodling and anti-sticking material as well as a preparation method and application thereof.
Background
Illegal small advertisements such as random posting, random painting and the like on major streets and alleyways, residential buildings and public facilities of a city seriously damage the city appearance environment, become a big public nuisance and stubborn illness affecting the city image, and are called street psoriasis. Practice proves that a scheme with good effect is to paint anti-graffiti and anti-sticking materials on streets, alleys, residential buildings and public facilities, so that the graffiti and anti-sticking materials can be easily erased, small advertisements can not be stuck at all, and the chronic disease of urban psoriasis is fundamentally solved.
CN111417692A discloses a coating composition, which is a one-component coating composition or a two-component coating composition, comprising the following components: alkoxy silicon resin, hydroxyl silicone oil with dynamic viscosity of less than 1000 mPas (25 ℃), amino silane and catalyst; wherein, when the coating composition is a two-component coating composition, the alkoxy silicon resin and the hydroxy silicone oil are present in different components. The coating composition disclosed by the invention takes organic silicon as a main body, has excellent anti-graffiti performance and anti-sticking performance, and can realize zero solvent. However, the aging resistance of the coating composition of the present invention is yet to be further improved.
The existing anti-graffiti and anti-sticking coating has problems in different degrees, namely poor anti-sticking performance, poor graffiti resistance, poor scratch resistance and poor aging resistance, and especially the technical scheme which simultaneously meets the two important performances of graffiti resistance and anti-sticking needs to be further researched.
Accordingly, it is desirable in the art to develop a material that is resistant to graffiti and also resistant to sticking on an aging basis.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide an anti-graffiti and anti-sticking material, and a preparation method and application thereof. The anti-doodling and anti-sticking material disclosed by the invention has the performances of anti-doodling, anti-sticking, anti-scratching, solvent resistance and weather aging resistance, and is suitable for the fields of outdoor facility protection or industrial product protection and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
on one hand, the invention provides an anti-graffiti anti-adhesion material which comprises A, B components, wherein the preparation raw materials of the component A comprise the following components in percentage by weight:
15-20% of an aminosilane coupling agent;
70-80% of hydroxyl silicone oil;
5-10% of polydimethylsiloxane;
the preparation raw materials of the component B comprise the following components in percentage by weight:
in the invention, the siloxane-based organic silicon resin can be crosslinked with hydroxyl silicone oil to form a hard organic silicon coating; the amino silane coupling agent can promote the rapid crosslinking of the main resin and ensure the crosslinking to be more complete; the addition of the polydimethylsiloxane can comprehensively improve the scrawling resistance of the material; the addition of the light stabilizer can improve the aging resistance of the material.
In the invention, in the preparation raw material of the component A, the dosage of the aminosilane coupling agent can be 15-20%, such as 15%, 18% or 20%.
In the invention, in the preparation raw material of the component A, the amount of the hydroxyl silicone oil can be 70-80%, for example, 70%, 73%, 75%, 78% or 80%.
In the invention, in the preparation raw material of the component a, the dosage of polydimethylsiloxane can be 5-10%, for example, 5%, 8% or 10%.
In the invention, in the raw material for preparing the component B, the siloxane-based silicone resin 1 can be used in an amount of 62-66%, such as 62%, 64%, or 66%.
In the present invention, the siloxane-based silicone resin 2 may be used in an amount of 25 to 27%, for example, 25%, 26%, 27%, or the like, in the raw material for preparing the component B.
In the invention, in the preparation raw material of the component B, the amount of the light stabilizer can be 2-3%, for example, 2%, 2.5% or 3%.
In the invention, in the raw material for preparing the component B, the amount of the isopropyl alcohol may be 5 to 10%, for example, 5%, 8%, 10%, or the like.
In the invention, the aminosilane coupling agent is N- (2-aminoethyl-3-aminopropyl) methyldimethoxysilane.
In the invention, the viscosity of the hydroxyl silicone oil is 40-60 cp, such as 40cp, 45cp, 50cp, 55cp or 60 cp.
In the invention, the viscosity of the polydimethylsiloxane is 20-40 cp, such as 20cp, 25cp, 30cp, 35cp or 40 cp.
In the invention, the viscosity of the siloxane-based silicone resin 1 is 15-20 cp, such as 15cp, 16cp, 18cp or 20 cp.
Preferably, the viscosity of the siloxane-based silicone resin 2 is 300-350 cp, such as 300cp, 320cp, 340cp or 350 cp.
Preferably, the mass ratio of the siloxane-based silicone resin 1 to the siloxane-based silicone resin 2 is 2:1 to 3:1, such as 2:1, 2.5:1 or 3: 1.
In the present invention, the light stabilizer includes a hindered amine-based light stabilizer and a benzotriazole-based light stabilizer.
Preferably, the mass ratio of the hindered amine light stabilizer to the benzotriazole light stabilizer is 1:1 to 1:2, for example, 1:1, 2:3, or 1: 2.
In the invention, the weight ratio of the component A to the component B is 1: 4-1: 6, such as 1:4, 1:5 or 1: 6.
In another aspect, the present invention provides a method for preparing the anti-graffiti release material, comprising the following steps:
(1) preparation of a component A: uniformly mixing an aminosilane coupling agent, hydroxyl silicone oil and polydimethylsiloxane to obtain a component A;
(2) b, preparation of a component: adding the siloxane-based organic silicon resin 1 into the siloxane-based organic silicon resin 2, heating, uniformly stirring, cooling, then adding a light stabilizer and isopropanol, and uniformly mixing to obtain a component B;
(3) and mixing the component A and the component B, shaking up, and standing to obtain the anti-graffiti and anti-sticking material.
In the invention, the rotation speed of the mixing in the step (1) is 450-500 rpm, such as 450rpm, 460rpm, 480rpm or 500 rpm.
Preferably, the mixing time in the step (1) is 10-15 min, such as 10min, 13min or 15 min.
Preferably, the temperature rise in the step (2) is 55 to 65 ℃, for example, 55 ℃, 58 ℃, 60 ℃ or 65 ℃. Because the viscosity of the siloxane-based silicone resin 2 is greater at room temperature, the viscosity can be reduced by increasing the temperature, so that the two siloxane-based silicone resins are mixed more uniformly.
Preferably, the rotation speed of the stirring in the step (2) is 450-500 rpm, such as 450rpm, 460rpm, 480rpm or 500rpm, and the like, and the stirring time is 20-25 min, such as 20min, 23min or 25min, and the like.
Preferably, the temperature reduction in the step (2) is to reduce the temperature to room temperature.
Preferably, the rotation speed of the mixing in the step (2) is 450-500 rpm, such as 450rpm, 460rpm, 480rpm or 500rpm, and the like, and the mixing time is 10-15 min, such as 10min, 13min or 15min, and the like.
Preferably, the mixing time in the step (3) is 5-10 min, such as 5min, 8min or 10 min.
Preferably, the standing time in the step (3) is 0.5-1 h, such as 0.5h, 0.8h or 1 h.
In a further aspect, the present invention provides the use of an anti-graffiti release material as described above for outdoor installation protection or for protection of industrial articles.
Compared with the prior art, the invention has at least the following beneficial effects:
according to the invention, the siloxane-based organic silicon resin 1 and the siloxane-based organic silicon resin 2 which are used as main body resins can be crosslinked with hydroxyl silicone oil to form a hard organic silicon coating, and the aminosilane coupling agent can promote the quick crosslinking of the main body resins and ensure the more complete crosslinking, so that the excellent basic performance and the anti-sticking property of the material coating are ensured; the addition of the polydimethylsiloxane comprehensively improves the scrawling resistance of the material, and achieves the integration of excellent scrawling resistance and adhesion resistance; in addition, the addition of the light stabilizer improves the aging resistance of the material.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.
Example 1
In this embodiment, an anti-graffiti anti-adhesion material is provided, where the anti-graffiti anti-adhesion material includes A, B two components, and the preparation raw material of the component a includes the following components by weight:
15% of N- (2-aminoethyl-3-aminopropyl) methyldimethoxysilane;
80% of hydroxyl silicone oil;
5% of polydimethylsiloxane;
the preparation raw materials of the component B comprise the following components in percentage by weight:
wherein the viscosity of the hydroxyl silicone oil is 60 cp; the viscosity of the polydimethylsiloxane was 30 cp; the viscosity of the siloxane-based silicone resin 1 is 15cp, the viscosity of the siloxane-based silicone resin 2 is 300cp, and the mass ratio of the siloxane-based silicone resin 1 to the siloxane-based silicone resin 2 is 2: 1; the light stabilizer comprises a hindered amine light stabilizer and a benzotriazole light stabilizer, and the mass ratio of the hindered amine light stabilizer to the benzotriazole light stabilizer is 1: 1; the weight ratio of the component A to the component B is 1: 5.
The preparation method comprises the following steps:
(1) preparation of a component A: mixing N- (2-aminoethyl-3-aminopropyl) methyldimethoxysilane, hydroxyl silicone oil and polydimethylsiloxane at the rotating speed of 460rpm for 10min to obtain a component A;
(2) b, preparation of a component: adding siloxane-based organic silicon resin 1 into siloxane-based organic silicon resin 2, heating to 60 ℃, stirring at the rotating speed of 470rpm for 25min, cooling to room temperature, then adding light stabilizer and isopropanol, and mixing at the rotating speed of 460rpm for 12min to obtain a component B;
(3) and mixing the component A and the component B for 8min, and standing for 1h to obtain the anti-graffiti anti-sticking material.
Example 2
In this embodiment, an anti-graffiti anti-adhesion material is provided, where the anti-graffiti anti-adhesion material includes A, B two components, and the preparation raw material of the component a includes the following components by weight:
18% of N- (2-aminoethyl-3-aminopropyl) methyldimethoxysilane;
75% of hydroxyl silicone oil;
7% of polydimethylsiloxane;
the preparation raw materials of the component B comprise the following components in percentage by weight:
wherein, the viscosity of the hydroxyl silicone oil is 40 cp; the viscosity of the polydimethylsiloxane was 40 cp; the viscosity of the siloxane-based silicone resin 1 is 20cp, the viscosity of the siloxane-based silicone resin 2 is 350cp, and the mass ratio of the siloxane-based silicone resin 1 to the siloxane-based silicone resin 2 is 2.5: 1; the light stabilizer comprises a hindered amine light stabilizer and a benzotriazole light stabilizer, and the mass ratio of the hindered amine light stabilizer to the benzotriazole light stabilizer is 1: 2; the weight ratio of the component A to the component B is 1: 4.
The preparation method comprises the following steps:
(1) preparation of a component A: mixing N- (2-aminoethyl-3-aminopropyl) methyldimethoxysilane, hydroxyl silicone oil and polydimethylsiloxane at the rotating speed of 470rpm for 15min to obtain a component A;
(2) b, preparation of a component: adding siloxane-based organic silicon resin 1 into siloxane-based organic silicon resin 2, heating to 55 ℃, stirring at the rotating speed of 450rpm for 20min, cooling to room temperature, then adding light stabilizer and isopropanol, and mixing at the rotating speed of 470rpm for 13min to obtain a component B;
(3) and mixing the component A and the component B for 5min, and standing for 0.5h to obtain the anti-graffiti anti-sticking material.
Example 3
In this embodiment, an anti-graffiti anti-adhesion material is provided, where the anti-graffiti anti-adhesion material includes A, B two components, and the preparation raw material of the component a includes the following components by weight:
20% of N- (2-aminoethyl-3-aminopropyl) methyldimethoxysilane;
70% of hydroxyl silicone oil;
10% of polydimethylsiloxane;
the preparation raw materials of the component B comprise the following components in percentage by weight:
wherein the viscosity of the hydroxyl silicone oil is 50 cp; the viscosity of the polydimethylsiloxane was 20 cp; the viscosity of the siloxane-based silicone resin 1 is 16cp, the viscosity of the siloxane-based silicone resin 2 is 330cp, and the mass ratio of the siloxane-based silicone resin 1 to the siloxane-based silicone resin 2 is 3: 1; the light stabilizer comprises a hindered amine light stabilizer and a benzotriazole light stabilizer, and the mass ratio of the hindered amine light stabilizer to the benzotriazole light stabilizer is 2: 3; the weight ratio of the component A to the component B is 1: 6.
The preparation method comprises the following steps:
(1) preparation of a component A: mixing N- (2-aminoethyl-3-aminopropyl) methyldimethoxysilane, hydroxyl silicone oil and polydimethylsiloxane at the rotating speed of 450rpm for 13min to obtain a component A;
(2) b, preparation of a component: adding siloxane-based organic silicon resin 1 into siloxane-based organic silicon resin 2, heating to 65 ℃, stirring at the rotating speed of 460rpm for 23min, cooling to room temperature, then adding light stabilizer and isopropanol, and mixing at the rotating speed of 500rpm for 15min to obtain a component B;
(3) and mixing the component A and the component B for 10min, and standing for 0.8h to obtain the anti-graffiti anti-sticking material.
Example 4
In this embodiment, an anti-graffiti anti-adhesion material is provided, where the anti-graffiti anti-adhesion material includes A, B two components, and the preparation raw material of the component a includes the following components by weight:
17% of N- (2-aminoethyl-3-aminopropyl) methyldimethoxysilane;
73% of hydroxyl silicone oil;
10% of polydimethylsiloxane;
the preparation raw materials of the component B comprise the following components in percentage by weight:
wherein the viscosity of the hydroxyl silicone oil is 45 cp; the viscosity of the polydimethylsiloxane was 35 cp; the viscosity of the siloxane-based silicone resin 1 is 18cp, the viscosity of the siloxane-based silicone resin 2 is 340cp, and the mass ratio of the siloxane-based silicone resin 1 to the siloxane-based silicone resin 2 is 2.5: 1; the light stabilizer comprises a hindered amine light stabilizer and a benzotriazole light stabilizer, and the mass ratio of the hindered amine light stabilizer to the benzotriazole light stabilizer is 1: 1; the weight ratio of the component A to the component B is 1: 5.
The preparation method comprises the following steps:
(1) preparation of a component A: mixing N- (2-aminoethyl-3-aminopropyl) methyldimethoxysilane, hydroxyl silicone oil and polydimethylsiloxane at the rotating speed of 500rpm for 14min to obtain a component A;
(2) b, preparation of a component: adding the siloxane-based organic silicon resin 1 into the siloxane-based organic silicon resin 2, heating to 63 ℃, stirring at the rotating speed of 500rpm for 22min, cooling to room temperature, then adding the light stabilizer and the isopropanol, and mixing at the rotating speed of 450rpm for 10min to obtain a component B;
(3) and mixing the component A and the component B for 7min, and standing for 1h to obtain the anti-graffiti anti-sticking material.
Example 5
In this embodiment, an anti-graffiti anti-adhesion material is provided, where the anti-graffiti anti-adhesion material includes A, B two components, and the preparation raw material of the component a includes the following components by weight:
16% of N- (2-aminoethyl-3-aminopropyl) methyldimethoxysilane;
78% of hydroxyl silicone oil;
6% of polydimethylsiloxane;
the preparation raw materials of the component B comprise the following components in percentage by weight:
wherein the viscosity of the hydroxyl silicone oil is 55 cp; the viscosity of the polydimethylsiloxane was 25 cp; the viscosity of the siloxane-based silicone resin 1 is 20cp, the viscosity of the siloxane-based silicone resin 2 is 345cp, and the mass ratio of the siloxane-based silicone resin 1 to the siloxane-based silicone resin 2 is 3: 1; the light stabilizer comprises a hindered amine light stabilizer and a benzotriazole light stabilizer, and the mass ratio of the hindered amine light stabilizer to the benzotriazole light stabilizer is 1: 2; the weight ratio of the component A to the component B is 1: 6.
The preparation method comprises the following steps:
(1) preparation of a component A: mixing N- (2-aminoethyl-3-aminopropyl) methyldimethoxysilane, hydroxyl silicone oil and polydimethylsiloxane at 480rpm for 12min to obtain a component A;
(2) b, preparation of a component: adding the siloxane-based organic silicon resin 1 into the siloxane-based organic silicon resin 2, heating to 58 ℃, stirring at 480rpm for 24min, cooling to room temperature, then adding a light stabilizer and isopropanol, and mixing at 480rpm for 12min to obtain a component B;
(3) and mixing the component A and the component B for 6min, and standing for 1h to obtain the anti-graffiti anti-sticking material.
Comparative example 1
This comparative example differs from example 1 only in that the weight ratio of the a component to the B component was 1: 3.
Comparative example 2
This comparative example differs from example 1 only in that the weight ratio of the a component to the B component was 1: 7.
Comparative example 3
This comparative example differs from example 1 only in that the viscosity of the hydroxy silicone oil is 30 cp.
Comparative example 4
This comparative example differs from example 1 only in that the viscosity of the hydroxy silicone oil is 100 cp.
Comparative example 5
This comparative example differs from example 1 only in that the starting materials for the preparation of component A do not comprise polydimethylsiloxane.
Comparative example 6
This comparative example differs from example 1 only in that no light stabilizer is included in the starting materials for the preparation of the B component.
The anti-graffiti release materials prepared in examples 1-5 and comparative examples 1-6 were tested for performance by the following methods:
(1) scrawling resistance: testing the scrawling resistance cleanable grade of the ink, the oil-based marker and the acrylic acid self-spray paint according to JG/T304-2011;
(2) anti-sticking property: testing the anti-sticking surface condition and 180-degree peel strength of the 3M single-sided identification adhesive tape according to JG/T304-2011;
(3) pencil hardness: counting according to the hardness of the pencil and JG/T304-2011;
(4) solvent rub resistance: wiping with acetone according to JG/T304-2011, and counting the wiping times without exposing the bottom;
(5) resistance to artificial weather aging: the coating was observed for changes and tested for anti-stick properties according to JG/T304-2011.
The results of the performance tests are shown in table 1.
TABLE 1
As can be seen from Table 1, the anti-graffiti and anti-sticking materials prepared in examples 1-5 all achieve the best indexes of graffiti resistance and anti-sticking property, and have excellent performances of surface scratch resistance, solvent wiping resistance, artificial weather aging resistance and the like.
The coating of the anti-graffiti release materials prepared in comparative examples 1 and 2 was not fully cured compared to example 1, and various other properties could not be tested, indicating that too large (1:3) or too small (1:7) of the weight ratio of component a to component B resulted in a decrease in the performance of the anti-graffiti release materials of the present invention.
The coating of the anti-graffiti release materials prepared in comparative examples 3 and 4 did not cure completely and the other properties could not be tested, which indicates that either too little (30cp) or too much (100cp) of the hydroxyl silicone oil viscosity decreased the performance of the anti-graffiti release materials of the present invention.
The graffiti resistance of the graffiti resistant release material prepared in comparative example 5 is significantly reduced compared to example 1, and does not meet the optimum performance criteria, since no polydimethylsiloxane is included in comparative example 5.
The resistance to weathering of the graffiti-resistant release material prepared in comparative example 6 is significantly reduced compared to example 1, since no light stabilizer is included in comparative example 6.
The applicant states that the invention is illustrated by the above examples to the anti-graffiti release material and the preparation method thereof, but the invention is not limited to the above examples, i.e. it does not mean that the invention must be implemented by means of the above examples. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
Claims (10)
1. The anti-graffiti anti-adhesion material is characterized by comprising A, B components, wherein the component A is prepared from the following raw materials in percentage by weight:
15-20% of an aminosilane coupling agent;
70-80% of hydroxyl silicone oil;
5-10% of polydimethylsiloxane;
the preparation raw materials of the component B comprise the following components in percentage by weight:
2. the anti-graffiti release material according to claim 1, wherein the aminosilane coupling agent is N- (2-aminoethyl-3-aminopropyl) methyldimethoxysilane.
3. The anti-graffiti release material according to claim 1 or 2, wherein the hydroxyl silicone oil has a viscosity of 40 to 60 cp.
4. The anti-graffiti release material according to any one of claims 1 to 3, wherein the polydimethylsiloxane has a viscosity of 20 to 40 cp.
5. The anti-graffiti release material according to any one of claims 1 to 4, wherein the silicone-based silicone resin 1 has a viscosity of 15 to 20 cp;
preferably, the viscosity of the siloxane-based silicone resin 2 is 300-350 cp;
preferably, the mass ratio of the siloxane-based silicone resin 1 to the siloxane-based silicone resin 2 is 2: 1-3: 1.
6. The anti-graffiti release material according to any one of claims 1 to 5, wherein the light stabilizer comprises a hindered amine light stabilizer and a benzotriazole light stabilizer;
preferably, the mass ratio of the hindered amine light stabilizer to the benzotriazole light stabilizer is 1: 1-1: 2.
7. The anti-graffiti release material according to any one of claims 1 to 6, wherein the weight ratio of the A component to the B component is 1:4 to 1: 6.
8. The method for preparing the anti-graffiti release material according to any one of claims 1 to 7, wherein the method comprises the following steps:
(1) preparation of a component A: uniformly mixing an aminosilane coupling agent, hydroxyl silicone oil and polydimethylsiloxane to obtain a component A;
(2) b, preparation of a component: adding the siloxane-based organic silicon resin 1 into the siloxane-based organic silicon resin 2, heating, uniformly stirring, cooling, then adding a light stabilizer and isopropanol, and uniformly mixing to obtain a component B;
(3) and mixing the component A and the component B, shaking up, and standing to obtain the anti-graffiti and anti-sticking material.
9. The method according to claim 8, wherein the mixing speed in step (1) is 450 to 500 rpm;
preferably, the mixing time in the step (1) is 10-15 min;
preferably, the temperature rise in the step (2) is to 55-65 ℃;
preferably, the rotation speed of the stirring in the step (2) is 450-500 rpm, and the stirring time is 20-25 min;
preferably, the temperature reduction in the step (2) is to reduce the temperature to room temperature;
preferably, the rotation speed of the mixing in the step (2) is 450-500 rpm, and the mixing time is 10-15 min;
preferably, the mixing time in the step (3) is 5-10 min;
preferably, the standing time in the step (3) is 0.5-1 h.
10. Use of the anti-graffiti release material according to any one of claims 1 to 7 for protection of outdoor installations or protection of industrial articles.
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| CN111234694A (en) * | 2020-03-16 | 2020-06-05 | 中国船舶重工集团公司第七二五研究所 | Antifouling material and preparation method thereof |
| CN111417692A (en) * | 2017-11-07 | 2020-07-14 | 瓦克化学股份公司 | Anti-graffiti coating compositions |
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| CN101585995A (en) * | 2009-07-08 | 2009-11-25 | 兰州迅美漆业科技有限公司 | Oil-based anti-graffiti adhesion resistant paint and preparation method thereof |
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| CN109266153A (en) * | 2018-09-19 | 2019-01-25 | 湖南凯斯利新材料有限公司 | Aqueous anti-graffiti self-cleaning coating of one kind and preparation method thereof |
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