CN112724548A - Nano gel for mural reinforcement and preparation method thereof - Google Patents
Nano gel for mural reinforcement and preparation method thereof Download PDFInfo
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- CN112724548A CN112724548A CN202011552929.7A CN202011552929A CN112724548A CN 112724548 A CN112724548 A CN 112724548A CN 202011552929 A CN202011552929 A CN 202011552929A CN 112724548 A CN112724548 A CN 112724548A
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- 230000002787 reinforcement Effects 0.000 title claims description 22
- 238000002360 preparation method Methods 0.000 title abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229920006187 aquazol Polymers 0.000 claims abstract description 38
- 239000012861 aquazol Substances 0.000 claims abstract description 38
- 229920001665 Poly-4-vinylphenol Polymers 0.000 claims abstract description 37
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 31
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 31
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 31
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims abstract description 30
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims abstract description 28
- 239000001110 calcium chloride Substances 0.000 claims abstract description 28
- 229910001628 calcium chloride Inorganic materials 0.000 claims abstract description 28
- 239000008367 deionised water Substances 0.000 claims abstract description 28
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 28
- 239000003960 organic solvent Substances 0.000 claims abstract description 22
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 19
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 19
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 19
- 238000005728 strengthening Methods 0.000 claims abstract description 16
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 70
- 238000003756 stirring Methods 0.000 claims description 32
- 239000011259 mixed solution Substances 0.000 claims description 24
- 239000002245 particle Substances 0.000 claims description 18
- 239000000243 solution Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 9
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- 239000007864 aqueous solution Substances 0.000 claims description 8
- 238000005303 weighing Methods 0.000 claims description 8
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 6
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 6
- GSNUFIFRDBKVIE-UHFFFAOYSA-N DMF Natural products CC1=CC=C(C)O1 GSNUFIFRDBKVIE-UHFFFAOYSA-N 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 238000009776 industrial production Methods 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 4
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 15
- 239000000292 calcium oxide Substances 0.000 description 15
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 12
- 238000010422 painting Methods 0.000 description 5
- 239000012744 reinforcing agent Substances 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- SMZOGRDCAXLAAR-UHFFFAOYSA-N aluminium isopropoxide Chemical compound [Al+3].CC(C)[O-].CC(C)[O-].CC(C)[O-] SMZOGRDCAXLAAR-UHFFFAOYSA-N 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 241000282412 Homo Species 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- VCUFZILGIRCDQQ-KRWDZBQOSA-N N-[[(5S)-2-oxo-3-(2-oxo-3H-1,3-benzoxazol-6-yl)-1,3-oxazolidin-5-yl]methyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C1O[C@H](CN1C1=CC2=C(NC(O2)=O)C=C1)CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F VCUFZILGIRCDQQ-KRWDZBQOSA-N 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- YOBAEOGBNPPUQV-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe].[Fe] YOBAEOGBNPPUQV-UHFFFAOYSA-N 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 229910052572 stoneware Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/18—Homopolymers or copolymers of aromatic monomers containing elements other than carbon and hydrogen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44D—PAINTING OR ARTISTIC DRAWING, NOT OTHERWISE PROVIDED FOR; PRESERVING PAINTINGS; SURFACE TREATMENT TO OBTAIN SPECIAL ARTISTIC SURFACE EFFECTS OR FINISHES
- B44D7/00—Preserving paintings, e.g. by varnishing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
- C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
-
- 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
- C08K2003/2206—Oxides; Hydroxides of metals of calcium, strontium or barium
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- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Nanotechnology (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Composite Materials (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Physics & Mathematics (AREA)
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Abstract
The invention discloses a nanogel for strengthening murals, which comprises the following components in parts by weight: 4-10 parts of tetraethoxysilane, 2-5 parts of polyacrylic resin, 1-2 parts of nano calcium hydroxide, 2-6 parts of poly (2-ethyl-2-oxazoline), 3-10 parts of poly (4-vinylphenol), calcium chloride, 70-80 parts of organic solvent, 7-20 parts of ammonia water and 50-70 parts of deionized water. The nano gel for the murals provided by the invention has the advantages of easily available raw material components, low cost and simple and feasible preparation method, and more importantly, the nano gel not only enables the murals to be more firmly pasted, but also realizes the effect of water vapor exchange, further effectively avoids the problems of easy falling and expansion of the murals, and has a good industrial production application prospect.
Description
Technical Field
The invention belongs to the technical field of mural reinforcement, and particularly relates to a nanogel for mural reinforcement and a preparation method thereof.
Background
Murals are one of the earliest forms of painting art for humans, and the development of murals can be traced back to the age of stoneware. Ancient murals often record a large amount of information, have important values for understanding ancient history, politics, economy, culture, art, religion, building, scientific history and the like, and are important cultural heritages of human beings in China and even the world. However, as the mural is buried underground for a long time and is attacked by moisture and salt, the lime layer fails, various diseases such as shortenine, armor raising, hollowing and the like occur, and repair is urgently needed.
In order to repair mural painting in which the above various diseases occur, researchers have developed various protective materials. Generally, mural protection materials can be classified into two broad categories, organic and inorganic. Wherein AC33 (component is polyacrylic resin) and nano calcium hydroxide are organic and inorganic representatives. AC33 is widely used because of its advantages such as good adhesion, fast action, high strength of reinforcement, and the transparency of the formed film with little effect on mural color. Has become the main material for repairing mural in recent years. However, the film formed in the mural after the AC33 reinforces the mural is airtight, thereby affecting the exchange of water vapor between the mural and the outside, and causing the mural to swell and pulverize over a long time, which causes fatal damage to the mural.
In order to solve the problem of the water vapor permeability, researchers mostly adopt nano calcium hydroxide to reinforce the mural painting, and gradually pay attention to the mural painting due to the advantages of small influence on water vapor exchange between the mural painting and the outside, good compatibility, aging resistance and the like. However, the nano calcium hydroxide reinforced murals have low reinforcing strength and slow action, and generally need more than two weeks, so the reinforcing efficiency is low.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a nanogel for mural reinforcement, which solves the problems that the reinforcing efficiency of a reinforcing agent in the prior art on murals is poor, the water vapor transmission rate is low, and the murals are easy to fall off or swell.
The invention also aims to provide a preparation method of the nanogel for strengthening the mural.
The technical scheme adopted by the invention is as follows: a nanogel for strengthening murals comprises the following components in parts by weight:
4-10 parts of ethyl orthosilicate, 3-8 parts of aluminum isopropoxide, 2-5 parts of polyacrylic resin, 1-2 parts of nano calcium hydroxide, 2-6 parts of poly (2-ethyl-2-oxazoline), 3-10 parts of poly (4-vinylphenol), calcium chloride, 70-80 parts of organic solvent, 7-20 parts of ammonia water and 50-70 parts of deionized water.
Preferably, the composition comprises the following components in parts by weight:
6-8 parts of ethyl orthosilicate, 4-6 parts of aluminum isopropoxide, 3-4 parts of polyacrylic resin, 1-2 parts of nano calcium hydroxide, 3-5 parts of poly (2-ethyl-2-oxazoline), 5-8 parts of poly (4-vinylphenol), calcium chloride, 74-78 parts of organic solvent, 10-15 parts of ammonia water and 55-64 parts of deionized water.
The second technical scheme of the invention is realized as follows: the preparation method of the nanogel for strengthening the mural comprises the following steps:
s1, respectively weighing the following components in parts by weight: 4-10 parts of tetraethoxysilane, 2-5 parts of polyacrylic resin, 1-2 parts of nano calcium hydroxide, 2-6 parts of poly (2-ethyl-2-oxazoline), 3-10 parts of poly (4-vinylphenol), calcium chloride, 70-80 parts of an organic solvent, 7-20 parts of ammonia water and 50-70 parts of deionized water;
s2, adding the tetraethoxysilane, the polyacrylic resin, the nano calcium hydroxide and the calcium chloride which are obtained in the step S1 into deionized water, and uniformly stirring to obtain a mixed solution;
s3, adding the ammonia water obtained in the step S1 into the mixed aqueous solution obtained in the step S2, and stirring uniformly at normal temperature to obtain an aminated mixed solution;
s4, respectively dissolving poly (2-ethyl-2-oxazoline) and poly (4-vinylphenol) in an organic solvent, dropwise adding the organic solvent solution of the poly (2-ethyl-2-oxazoline) into the organic solvent solution of the poly (4-vinylphenol) while stirring, adding the aminated mixed solution obtained in S3, and fully stirring for 6-10 h to obtain the nanogel for strengthening the mural.
Preferably, the mass concentration of the ammonia water is 3.5-4.3%.
Preferably, the particle size of the nano calcium hydroxide is 5-10 nm.
Preferably, the organic solvent is at least one of DMF, methanol, ethanol, n-propanol or isopropanol.
Compared with the prior art, the nano gel for the mural provided by the invention has the advantages that the raw material components are easy to obtain, the cost is low, the preparation method is simple and feasible, more importantly, the nano gel not only enables the mural to be pasted more firmly, but also realizes the effect of water-vapor exchange, further effectively avoids the problem that the mural is easy to fall off and swell, and has a good industrial production application prospect. Meanwhile, the nanogel has super-strong stability; in addition, the nanogel obtained by the invention can be popularized to the protection of other cultural relics such as stone, paper and the like.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention; that is, the specific embodiments herein are a subset of the embodiments in the present application and not all embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control.
The embodiment of the invention provides a nanogel for strengthening murals, which comprises the following components in parts by weight:
4-10 parts of tetraethoxysilane, 2-5 parts of polyacrylic resin, 1-2 parts of nano calcium hydroxide, 2-6 parts of poly (2-ethyl-2-oxazoline), 3-10 parts of poly (4-vinylphenol), 2-7 parts of calcium chloride, 70-80 parts of organic solvent, 7-20 parts of ammonia water and 50-70 parts of deionized water.
Further, the coating comprises the following components in parts by weight:
6-8 parts of tetraethoxysilane, 3-4 parts of polyacrylic resin, 1-2 parts of nano calcium hydroxide, 3-5 parts of poly (2-ethyl-2-oxazoline), 5-8 parts of poly (4-vinylphenol), 3-5 parts of calcium chloride, 74-78 parts of organic solvent, 10-15 parts of ammonia water and 55-64 parts of deionized water.
Furthermore, the particle size of the nano calcium hydroxide is 5-10 nm.
The embodiment of the invention also provides a preparation method of the nanogel for mural reinforcement, which comprises the following steps:
s1, respectively weighing the following components in parts by weight: 6-8 parts of tetraethoxysilane, 3-4 parts of polyacrylic resin, 1-2 parts of nano calcium hydroxide, 3-5 parts of poly (2-ethyl-2-oxazoline), 5-8 parts of poly (4-vinylphenol), calcium chloride, 74-78 parts of an organic solvent, 10-15 parts of ammonia water and 55-64 parts of deionized water;
s2, adding the tetraethoxysilane, the polyacrylic resin, the nano calcium hydroxide and the calcium chloride which are obtained in the step S1 into deionized water, and uniformly stirring to obtain a mixed solution;
s3, adding the ammonia water obtained in the step S1 into the mixed aqueous solution obtained in the step S2, and stirring uniformly at normal temperature to obtain an aminated mixed solution;
s4, respectively dissolving poly (2-ethyl-2-oxazoline) and poly (4-vinylphenol) in an organic solvent, dropwise adding the organic solvent solution of the poly (2-ethyl-2-oxazoline) into the organic solvent solution of the poly (4-vinylphenol) while stirring, adding the aminated mixed solution obtained in S3, and fully stirring for 6-10 h to obtain the nanogel for strengthening the mural.
Wherein the mass concentration of the ammonia water is 3.5-4.3%; the organic solvent is at least one of DMF, methanol, ethanol, n-propanol or isopropanol, preferably DMF.
The nano gel for the murals provided by the invention has the advantages of easily available raw material components, low cost and simple and feasible preparation method, and more importantly, the nano gel not only enables the murals to be more firmly pasted, but also realizes the effect of water vapor exchange, further effectively avoids the problems of easy falling and expansion of the murals, and has a good industrial production application prospect.
The following are specific examples
Example 1
The embodiment 1 of the invention provides a nanogel for strengthening murals, which comprises the following components in parts by weight:
7 parts of tetraethoxysilane, 3.5 parts of polyacrylic resin, 1.5 parts of calcium oxide with the particle size of 8nm, 4 parts of poly (2-ethyl-2-oxazoline), 6 parts of poly (4-vinylphenol), 4 parts of calcium chloride, 76 parts of DMF, 12 parts of ammonia water with the mass concentration of 4.0 percent and 60 parts of deionized water.
The nanogel for strengthening the mural provided in embodiment 1 of the invention is prepared by the following method:
s1, respectively weighing the following components in parts by weight: 7 parts of tetraethoxysilane, 3.5 parts of polyacrylic resin, 1.5 parts of calcium oxide with the particle size of 8nm, 4 parts of poly (2-ethyl-2-oxazoline), 6 parts of poly (4-vinylphenol), 4 parts of calcium chloride, 76 parts of DMF, 12 parts of ammonia water with the mass concentration of 4.0 percent and 60 parts of deionized water;
s2, adding the tetraethoxysilane, the polyacrylic resin, the calcium oxide with the particle size of 8nm and the calcium chloride which are described in the S1 into deionized water, and uniformly stirring to obtain a mixed solution;
s3, adding the ammonia water obtained in the step S1 into the mixed aqueous solution obtained in the step S2, and stirring uniformly at normal temperature to obtain an aminated mixed solution;
s4, respectively dissolving poly (2-ethyl-2-oxazoline) and poly (4-vinylphenol) in DMF, dropwise adding the DMF solution of poly (2-ethyl-2-oxazoline) into the DMF solution of poly (4-vinylphenol) while stirring, adding the aminated mixed solution obtained in S3, and fully stirring for 8h to obtain the nanogel for strengthening the mural.
Example 2
The embodiment 2 of the invention provides a nanogel for mural reinforcement, which comprises the following components in parts by weight:
6 parts of tetraethoxysilane, 3 parts of polyacrylic resin, 1 part of calcium oxide with the particle size of 5nm, 3 parts of poly (2-ethyl-2-oxazoline), 5 parts of poly (4-vinylphenol), 3 parts of calcium chloride, 74 parts of DMF (dimethyl formamide), 10 parts of ammonia water with the mass concentration of 35% and 55 parts of deionized water.
The nanogel for mural reinforcement provided by the embodiment 2 of the invention is prepared by the following method:
s1, respectively weighing the following components in parts by weight: 6 parts of tetraethoxysilane, 3 parts of polyacrylic resin, 1 part of calcium oxide with the particle size of 5nm, 3 parts of poly (2-ethyl-2-oxazoline), 5 parts of poly (4-vinylphenol), 3 parts of calcium chloride, 74 parts of DMF (dimethyl formamide), 10 parts of ammonia water with the mass concentration of 35% and 55 parts of deionized water;
s2, adding the tetraethoxysilane, the polyacrylic resin, the calcium oxide with the particle size of 5nm and the calcium chloride which are described in the S1 into deionized water, and uniformly stirring to obtain a mixed solution;
s3, adding the ammonia water obtained in the step S1 into the mixed aqueous solution obtained in the step S2, and stirring uniformly at normal temperature to obtain an aminated mixed solution;
s4, respectively dissolving poly (2-ethyl-2-oxazoline) and poly (4-vinylphenol) in DMF, dropwise adding the DMF solution of poly (2-ethyl-2-oxazoline) into the DMF solution of poly (4-vinylphenol) while stirring, adding the aminated mixed solution obtained in S3, and fully stirring for 6h to obtain the nanogel for strengthening the mural.
Example 3
The embodiment 3 of the invention provides a nanogel for mural reinforcement, which comprises the following components in parts by weight:
8 parts of tetraethoxysilane, 4 parts of polyacrylic resin, 2 parts of calcium oxide with the particle size of 10nm, 5 parts of poly (2-ethyl-2-oxazoline), 8 parts of poly (4-vinylphenol), 5 parts of calcium chloride, 78 parts of DMF (dimethyl formamide), 15 parts of ammonia water with the mass concentration of 4.3 percent and 64 parts of deionized water.
The nanogel for mural reinforcement provided in embodiment 3 of the invention is prepared by the following method:
s1, respectively weighing the following components in parts by weight: 8 parts of tetraethoxysilane, 4 parts of polyacrylic resin, 2 parts of calcium oxide with the particle size of 10nm, 5 parts of poly (2-ethyl-2-oxazoline), 8 parts of poly (4-vinylphenol), 5 parts of calcium chloride, 78 parts of DMF (dimethyl formamide), 15 parts of ammonia water with the mass concentration of 4.3 percent and 64 parts of deionized water;
s2, adding the tetraethoxysilane, the polyacrylic resin, the calcium oxide with the particle size of 10nm and the calcium chloride which are described in the S1 into deionized water, and uniformly stirring to obtain a mixed solution;
s3, adding the ammonia water obtained in the step S1 into the mixed aqueous solution obtained in the step S2, and stirring uniformly at normal temperature to obtain an aminated mixed solution;
s4, respectively dissolving poly (2-ethyl-2-oxazoline) and poly (4-vinylphenol) in DMF, dropwise adding the DMF solution of poly (2-ethyl-2-oxazoline) into the DMF solution of poly (4-vinylphenol) while stirring, adding the aminated mixed solution obtained in S3, and fully stirring for 10h to obtain the nanogel for strengthening the mural.
Example 4
The embodiment 4 of the invention provides a nanogel for mural reinforcement, which comprises the following components in parts by weight:
6 parts of tetraethoxysilane, 3 parts of polyacrylic resin, 2 parts of calcium oxide with the particle size of 10nm, 3 parts of poly (2-ethyl-2-oxazoline), 8 parts of poly (4-vinylphenol), 3 parts of calcium chloride, 78 parts of DMF (dimethyl formamide), 10 parts of ammonia water with the mass concentration of 4.3 percent and 64 parts of deionized water.
The nanogel for mural reinforcement provided in embodiment 4 of the invention is prepared by the following method:
s1, respectively weighing the following components in parts by weight: 6 parts of ethyl orthosilicate, 3 parts of polyacrylic resin, 2 parts of calcium oxide with the particle size of 10nm, 3 parts of poly (2-ethyl-2-oxazoline), 8 parts of poly (4-vinylphenol), 3 parts of calcium chloride, 78 parts of DMF (dimethyl formamide), 10 parts of ammonia water with the mass concentration of 4.3% and 64 parts of deionized water;
s2, adding the tetraethoxysilane, the polyacrylic resin, the calcium oxide with the particle size of 10nm and the calcium chloride which are described in the S1 into deionized water, and uniformly stirring to obtain a mixed solution;
s3, adding the ammonia water obtained in the step S1 into the mixed aqueous solution obtained in the step S2, and stirring uniformly at normal temperature to obtain an aminated mixed solution;
s4, respectively dissolving poly (2-ethyl-2-oxazoline) and poly (4-vinylphenol) in DMF, dropwise adding the DMF solution of poly (2-ethyl-2-oxazoline) into the DMF solution of poly (4-vinylphenol) while stirring, adding the aminated mixed solution obtained in S3, and fully stirring for 8h to obtain the nanogel for strengthening the mural.
Example 5
The embodiment 5 of the invention provides a nanogel for mural reinforcement, which comprises the following components in parts by weight:
8 parts of tetraethoxysilane, 4 parts of polyacrylic resin, 1 part of calcium oxide with the particle size of 10nm, 5 parts of poly (2-ethyl-2-oxazoline), 5 parts of poly (4-vinylphenol), 5 parts of calcium chloride, 74 parts of DMF (dimethyl formamide), 15 parts of ammonia water with the mass concentration of 4.3 percent and 55 parts of deionized water.
The nanogel for mural reinforcement provided in embodiment 5 of the invention is prepared by the following method:
s1, respectively weighing the following components in parts by weight: 8 parts of tetraethoxysilane, 4 parts of polyacrylic resin, 1 part of calcium oxide with the particle size of 10nm, 5 parts of poly (2-ethyl-2-oxazoline), 5 parts of poly (4-vinylphenol), 5 parts of calcium chloride, 74 parts of DMF (dimethyl formamide), 15 parts of ammonia water with the mass concentration of 4.3 percent and 55 parts of deionized water;
s2, adding the tetraethoxysilane, the polyacrylic resin, the calcium oxide with the particle size of 10nm and the calcium chloride which are described in the S1 into deionized water, and uniformly stirring to obtain a mixed solution;
s3, adding the ammonia water obtained in the step S1 into the mixed aqueous solution obtained in the step S2, and stirring uniformly at normal temperature to obtain an aminated mixed solution;
s4, respectively dissolving poly (2-ethyl-2-oxazoline) and poly (4-vinylphenol) in DMF, dropwise adding the DMF solution of poly (2-ethyl-2-oxazoline) into the DMF solution of poly (4-vinylphenol) while stirring, adding the aminated mixed solution obtained in S3, and fully stirring for 8h to obtain the nanogel for strengthening the mural.
Comparative example 1
The same preparation method as in example 1 was followed, except that the components constituting the nanogel did not contain tetraethoxysilane.
Comparative example 2
The same preparation method as in example 1 was used except that the components constituting the nanogel did not contain tetraethoxysilane and polyacrylic acid resin.
Comparative example 3
The same preparation method as in example 1 was followed, except that no poly (2-ethyl-2-oxazoline) was contained in the components constituting the nanogel.
Comparative example 4
The same preparation method as in example 1 was followed, except that the components constituting the nanogel did not contain poly (2-ethyl-2-oxazoline) and poly (4-vinylphenol).
The nanogels obtained in the embodiments 1 to 5 of the invention have good reinforcing effect and good water vapor transmittance on murals, and the reinforcing property and the water vapor transmittance of the mural reinforcing agent obtained in the embodiments 1 to 5 and the mural reinforcing agent obtained in the comparative examples 1 to 4 on murals are tested.
The specific test method comprises the following steps:
the nanogels obtained in examples 1 to 5 and comparative examples 1 to 4 were sequentially coated on mural stubs obtained from a coffin chamber of sienna, and after 6 hours, the mural was tested for moisture transmittance and peel strength, and the specific test results are shown in the following table:
table 1 test results of examples 1 to 5 and comparative examples 1 to 4
| Group of | Water vapor transmission rate (%) | Peel strength (N/m) |
| Example 1 | 88％ | 75 |
| Example 2 | 85％ | 72 |
| Example 3 | 82％ | 73 |
| Example 4 | 86％ | 74 |
| Example 5 | 87％ | 71 |
| Comparative example 1 | 10％ | 45 |
| Comparative example 2 | 9％ | 44 |
| Comparative example 3 | 8％ | 42 |
| Comparative example 4 | 9％ | 46 |
| General of | 6％ | 38 |
Conventional references in note tables are now the only single use polyacrylic resin (AC33) reinforcement
As can be seen from the data in table 1, the nanogels obtained in the embodiments 1 to 5 of the invention have good water vapor permeability and strong peel strength to the mural, i.e., have good reinforcement to the mural; the water vapor permeability and the peel strength of the reinforcing agents obtained in the comparative examples 1, 2, 3 and 4 to the mural are not good; in addition, compared with the conventional method that only the polyacrylic resin (AC33) reinforcing agent is used alone, the water vapor transmission rate of the nanogel obtained by the method is improved by at least 76 percent; the peel strength is improved by at least 86.7%.
In conclusion, the raw material components of the nanogel for the murals are easy to obtain, the cost is low, the preparation method is simple and feasible, and more importantly, the nanogel not only enables the murals to be pasted more firmly, but also realizes the effect of water vapor exchange, so that the problems that the murals are easy to fall off and swell are effectively solved, and the nanogel has a good industrial production application prospect.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. The nanogel for strengthening the murals is characterized by comprising the following components in parts by weight:
4-10 parts of tetraethoxysilane, 2-5 parts of polyacrylic resin, 1-2 parts of nano calcium hydroxide, 2-6 parts of poly (2-ethyl-2-oxazoline), 3-10 parts of poly (4-vinylphenol), calcium chloride, 70-80 parts of organic solvent, 7-20 parts of ammonia water and 50-70 parts of deionized water.
2. The nanogel for mural reinforcement according to claim 1, comprising the following components in parts by weight:
6-8 parts of tetraethoxysilane, 3-4 parts of polyacrylic resin, 1-2 parts of nano calcium hydroxide, 3-5 parts of poly (2-ethyl-2-oxazoline), 5-8 parts of poly (4-vinylphenol), calcium chloride, 74-78 parts of an organic solvent, 10-15 parts of ammonia water and 55-64 parts of deionized water.
3. A method for preparing a nanogel for mural reinforcement according to claim 1 or 2, comprising the steps of:
s1, respectively weighing the following components in parts by weight: 4-10 parts of tetraethoxysilane, 2-5 parts of polyacrylic resin, 1-2 parts of nano calcium hydroxide, 2-6 parts of poly (2-ethyl-2-oxazoline), 3-10 parts of poly (4-vinylphenol), calcium chloride, 70-80 parts of an organic solvent, 7-20 parts of ammonia water and 50-70 parts of deionized water;
s2, adding the tetraethoxysilane, the polyacrylic resin, the nano calcium hydroxide and the calcium chloride which are obtained in the step S1 into deionized water, and uniformly stirring to obtain a mixed solution;
s3, adding the ammonia water obtained in the step S1 into the mixed aqueous solution obtained in the step S2, and stirring uniformly at normal temperature to obtain an aminated mixed solution;
s4, respectively dissolving poly (2-ethyl-2-oxazoline) and poly (4-vinylphenol) in an organic solvent, dropwise adding the organic solvent solution of the poly (2-ethyl-2-oxazoline) into the organic solvent solution of the poly (4-vinylphenol) while stirring, adding the aminated mixed solution obtained in S3, and fully stirring for 6-10 h to obtain the nanogel for strengthening the mural.
4. The method for preparing the nanogel for the mural reinforcement according to claim 3, wherein the mass concentration of the ammonia water is 3.5-4.3%.
5. The method for preparing the nanogel for mural reinforcement according to claim 4, wherein the particle size of the nano calcium hydroxide is 5-10 nm.
6. The method for preparing nanogel for mural reinforcement according to any one of claims 3-5, wherein the organic solvent is at least one of DMF, methanol, ethanol, n-propanol or isopropanol.
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| CN116640483A (en) * | 2023-06-05 | 2023-08-25 | 陕西师范大学 | Ceramic colored drawing cultural relic reinforcing agent |
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