CN105132213B - A kind of scavenger and preparation method thereof of mural painting reinforcement material - Google Patents
A kind of scavenger and preparation method thereof of mural painting reinforcement material Download PDFInfo
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- CN105132213B CN105132213B CN201510451892.1A CN201510451892A CN105132213B CN 105132213 B CN105132213 B CN 105132213B CN 201510451892 A CN201510451892 A CN 201510451892A CN 105132213 B CN105132213 B CN 105132213B
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Abstract
The invention discloses a kind of scavengers and preparation method thereof of mural painting reinforcement material, use borax gel, ethyl acetate and 1:1 ethyl acetate and the two different cleaning agents of paraxylene are mixed, the reinforcement material deteriorated as novel washing material to ancient wall surface cleans.Gel-cleaning agent combination is spread on preservative film, then size is cut suitable gauze and is layered on gel first, presses lightly on, is bonded in gel on gauze, turn take preservative film off later.Gauze and gel have become an entirety at this time, and gel face is sticked on to the wall painting surface for needing to clean, presses lightly on, then tears off, and achieve the purpose that remove wall painting surface aging reinforcement material.This method can effectively remove the reinforcement material for penetrating into wall painting pigment layer under the premise of not destroying wall painting surface, easy to operate, safe and pollution-free.
Description
Technical field
The present invention relates to a kind of cleaning methods of ancient wall surface aging reinforcement material, specifically, being a kind of mural painting
Scavenger of reinforcement material and preparation method thereof.
Background technique
The decoration and beautifying functions of mural painting make it the important content of environment design, are drawing earliest in human history
One of form, the ancient wall of remnants so far are extremely rare cultural relics.Weathering year in year out, has occurred ancient wall
Rise first, hollowing, large area fall off, decolourize, changing colour, the diseases such as crisp alkali.In order to extend the service life of mural painting, antiquary is taken
A series of safeguard measures, wherein it is to permeate certain macromolecule bonding agents in wall painting surface that application is more, to reinforced surface face
The bed of material.The domestic common macromolecule reinforcement material of mural painting mainly has polyvinyl acetate emulsion, pure acrylic latex, organic-silicon-modified
Acrylic emulsion and Paraloid B72 resin etc., it is common practice to by strengthening agent be diluted to solid content be 1~5% it is dilute molten
Liquid is applied to wall painting surface, to increase the intensity of wall painting surface coat of colo(u)r and lime layer.By natural aging in more than 30 years,
Certain macromolecule reinforcement materials of early application start to occur to some extent discoloration, stickness, hardening, embrittlement, blistering etc. now
As the long-term preservation of mural painting will be threatened and open up old by developing as one pleases;If it is not only difficult directly to continue to bonding agent in wall painting surface
To permeate into, and it is easy the material package solidification by aging and influences appearance, or even crust warps.Therefore, how effectively
Ground removes the macromolecule reinforcement material of these agings, is current historical relic's protection field technical problem urgently to be resolved.
The also few people's research at home of the cleaning technique of wall painting surface aging reinforcement material, this laboratory is once in " China
Advances in Materials " magazine delivers research paper on 11 phases in 2012, it was demonstrated that it can be organic molten with ethyl acetate and ethyl acetoacetate etc.
The macromolecule reinforcement material penetrated into rock micropore is removed in agent, and simultaneous quantitative calculates several organic solvents to infiltration Dali
Stone, sandstone, tufa stone surface the high molecular materials such as Paraloid B72 clearance rate.It is directly removed and is penetrated into using organic solvent
There are many problems for the high molecular material of wall painting surface, one is the high volatility of organic solvent, construction site smell is serious, no
Only pollution environment exists simultaneously fire hazard;The second is the permeability and diffusivity of organic solvent is strong, often make partly soluble high score
For sub- material to depths flushing, the amount actually taken out is seldom.
Summary of the invention
The purpose of the present invention is to provide a kind of ablutions of ancient wall surface aging reinforcement material.This method use can
Gel is removed as cleaning basic material, selects the organic solvent of appropriate kind and dosage, being prepared by mixing into peelable gel-has
Solvent combined type cleaning agent, then sticks on wall painting surface for combined type cleaning agent, tears off, is not breaking after the solidification of gel plaster body
The macromolecule reinforcement material for penetrating into wall painting pigment layer and lime layer, operation letter can be effectively cleaned under the premise of bad wall painting surface
Just, safe and pollution-free.
The present invention is achieved through the following technical solutions:
The invention discloses a kind of peelable gel-organic solvent combination cleaning agent, cleaning agent be mass percent 5%~
The organic solvent of 20% mass fraction is mixed with peelable gel, the raw material composition of peelable gel are as follows: 1 part of borax gathers
3~7 parts of vinyl alcohol, 40~60 parts of normal propyl alcohol, 220~280 parts of water.
As a further improvement, cleaning agent of the present invention is in organic solvent and peelable gel mixed process,
Add the borax of 0.1~0.6% mass fraction.
As a further improvement, organic solvent of the present invention is the esters or aromatic ring class of small molecule or mixing for theirs
Close object.
As a further improvement, organic solvent of the present invention is ethyl acetate or propene carbonate.
As a further improvement, organic solvent of the present invention is the ethyl acetate of 10% mass fraction, or
The ethyl acetate of the 1:1 mass ratio of 10% mass fraction and the mixed solvent of paraxylene.
The invention also discloses a kind of preparation method of peelable gel-organic solvent combination cleaning agent, specific preparation step
It is rapid as follows:
(1) preparation of peelable gel:
In parts by weight, raw material forms are as follows: and 1 part of borax, 3~7 parts of polyvinyl alcohol, 40~60 parts of normal propyl alcohol, water 220~
280 parts;Water is respectively charged into two containers of A, B, borax is put into A container, it is slightly hot, after stirring and dissolving, it is added positive third
Alcohol;Polyvinyl alcohol is poured into B container, sealing stirring is heated to 80~90 DEG C and makes it dissolve;Then the solution of B container is existed
It is poured under stirring in the solution of A container, seals agitating and heating, react 3h under the conditions of 80~90 DEG C, be cooled to room temperature, obtaining can
Remove gel, sealed storage;
(2) mixed organic solvents:
The organic solvent of 5%~20% mass fraction of mass percent is mixed with peelable gel, is heated with stirring to about
60 DEG C, and the borax of 0.1~0.6% mass fraction is suitably added depending on the viscosity situation of colloid after mixing, it obtains peelable solidifying
Glue-organic solvent combination cleaning agent.
As a further improvement, organic solvent of the present invention is the esters or aromatic ring class of small molecule or mixing for theirs
Close object.
As a further improvement, organic solvent of the present invention is the ethyl acetate of 10% mass fraction, or
The ethyl acetate of the 1:1 mass ratio of 10% mass fraction and the mixed solvent of paraxylene.
The invention discloses a kind of peelable gel-organic solvent combination cleaning agents to reinforce material for wall painting surface macromolecule
Expect sweep-out method, the specific steps are as follows:
1) peelable gel-organic solvent combination cleaning agent is put down and is spread on preservative film;
2) size is cut suitable degreasing cotton gauze to be layered on peelable gel-organic solvent combination cleaning agent, gently
Pressing, is attached on peelable gel-organic solvent combination cleaning agent uniformly on gauze;
3) gauze is turned, takes preservative film off, gauze and gel have become whole piece gel plaster body at this time;
4) the gel face of plaster body is sticked on to the wall painting surface for needing to clean, is pressed lightly on, gel gradually retrogradation becomes
G., jelly-like is torn off after 20~25 minutes, can come out the macromolecule reinforcement material partial adsorbates in coat of colo(u)r and lime layer;
5) when primary removing does not reach requirement, can repeat 1)~4) step repeatedly removes.
As a further improvement, peelable gel-organic solvent combination cleaning agent of the present invention is coated on mural painting
Closely connected with mural painting after surface, preliminary gelling time is 20 minutes, can easily uncover after preliminary gelling, will not injure mural painting
The coat of colo(u)r on surface.
The working principle of the invention is to use peelable gel to mural painting without destruction as cleaning basic material, is led to
The volatilization for crossing suction-operated to keep cleaning agent, limit solvent, prevents the loss of solution, avoids solution to mural painting percdation;
Partly soluble macromolecule strengthening agent is absorbed simultaneously also by suction-operated.
The present invention is filtered out to the peelable gel rubber material of the nondestructive borax of ancient wall, is coagulated by a series of experiments
The space net structure of glue is able to maintain and is sustained organic solvent, reduces the volatilization of organic solvent, and inhibits to mural painting depth
The infiltration of layer and swelling action, while the polymer segment of dissolution can be effectively adsorbed, reach removal target.Solidifying using borax
On the basis of glue, the present invention selects the organic solvent that can be mixed with peelable gel rubber material of appropriate kind and dosage, preparation
At peelable gel-organic solvent combination cleaning agent, which can remove the height for having penetrated into wall painting pigment layer and lime layer
Molecule reinforcement material.If primary cleaning does not reach requirement, cleaning agent and cleaning method of the invention can be used for multiple times, to reach
Higher clearance rate.
Compared with prior art, the present invention has the advantages that following have:
1) organic cleaning solvent can effectively be extended in wall painting surface residence time;
2) convenient for the control of the cleaning process of vertical plane and top surface mural painting and other complex surface mural paintings.
3) cleaning operation is easy, safe and pollution-free, can repeatedly carry out.
Specific embodiment
The invention discloses a kind of scavenger of mural painting reinforcement material, the cleaning agent be mass percent 5%~
The organic solvent of 20% mass fraction is mixed with peelable gel, the raw material composition of peelable gel are as follows: 1 part of borax gathers
3~7 parts of vinyl alcohol, 40~60 parts of normal propyl alcohol, 220~280 parts of water.
The preparation method of cleaning agent includes two steps of preparation and mixed organic solvents of peelable gel:
(1) preparation of peelable gel:
In parts by weight, raw material forms are as follows: and 1 part of borax, 3~7 parts of polyvinyl alcohol, 40~60 parts of normal propyl alcohol, water 220~
280 parts;Water is respectively charged into two containers of A, B, borax is put into A container, it is slightly hot, after stirring and dissolving, it is added positive third
Alcohol;Polyvinyl alcohol is poured into B container, sealing stirring is heated to 80~90 DEG C and makes it dissolve;Then the solution of B container is existed
It is poured under stirring in the solution of A container, seals agitating and heating, react 3h under the conditions of 80~90 DEG C, be cooled to room temperature, obtaining can
Remove gel, sealed storage.
(2) mixed organic solvents
The organic solvent of 5%~20% mass fraction of mass percent is mixed with peelable gel, is heated with stirring to about
60 DEG C, and the borax of 0.1~0.6% mass fraction is suitably added depending on the viscosity situation of colloid after mixing, it obtains peelable solidifying
Glue-organic solvent combination cleaning agent.
Organic solvent is the esters or aromatic ring class or their mixture of small molecule, wherein the phase of esters and peelable gel
Dissolubility is best, if ethyl acetate or propene carbonate are up to 20% mass fraction.The organic solvent mixed with peelable gel
Type and used in amounts are chosen according to the type of macromolecule reinforcement material to be cleaned.As preferably generally using 10% mass fraction
The ethyl acetate of the 1:1 mass ratio of ethyl acetate or 10% mass fraction and the mixed solvent of paraxylene.
Peelable gel-organic solvent combination cleaning agent can be used for the removing of wall painting surface macromolecule reinforcement material, specifically
Steps are as follows:
1) peelable gel-organic solvent combination cleaning agent is put down and is spread on preservative film;
2) size is cut suitable degreasing cotton gauze to be layered on peelable gel-organic solvent combination cleaning agent, gently
Pressing, is attached on peelable gel-organic solvent combination cleaning agent uniformly on gauze;
3) gauze is turned, takes preservative film off, gauze and gel have become whole piece gel plaster body at this time;
4) the gel face of plaster body is sticked on to the wall painting surface for needing to clean, is pressed lightly on, gel gradually retrogradation becomes
G., jelly-like is torn off after about 20~25 minutes, can go out the macromolecule reinforcement material partial adsorbates in coat of colo(u)r and lime layer
Come;
5) when primary removing does not reach requirement, can repeat 1)~4) step repeatedly removes.
Technical solution of the present invention is further described below by specific embodiment:
Embodiment 1:
Content and implementation process according to the invention, by 1 part of borax, 5 parts of polyvinyl alcohol, 50 parts of normal propyl alcohol, 250 parts of water systems
For at borax gel, the ethyl acetate of 10% mass percent is mixed with borax gel, obtains peelable gel-organic solvent
Combined type cleaning agent;It is then applied on absorbent gauze;Artificial fresco sample surface is sticked on it, is pressed lightly on, about 20 minutes
After tear off, then measure elimination effect.Poly vinyl acetate emulsion to artificial fresco sample surface is penetrated into advance and Jing Guo aging
Liquid, pure acrylic latex, organosilicon-modified acrylic emulsion and the common macromolecule strengthening agent of 4 kinds of Paraloid B72 resin carry out
It removes, 3 pieces of samples are made in each experiment, and mean percent clearance rate is calculated for detection and standard deviation is shown in Table 1.
Ethyl acetate is only changed to the paraxylene and second of 1:1 by same recipe and preparation step as procedure described above
Acetoacetic ester, average clearance rate and standard deviation are also shown in Table 1.
1 column data of table is the experimental result once removed.It is cleaner in order to remove, it can be after the same method in wall
It draws surface and carries out second, third time clear operation, total removal rate is continuously improved, and method of the invention is to wall painting surface face
The influence very little of the bed of material.
The peelable gel of table 1-organic solvent combination cleaning agent is averaged to different strengthening agents in artificial fresco sample surface
Clearance rate
Note: table Plays difference is the calculated value of 3 parallel laboratory tests
Reference examples 1:
Content and implementation process according to the invention, by 1 part of borax, 8 parts of polyvinyl alcohol, 70 parts of normal propyl alcohol, 290 parts of water systems
Standby peelable gel, as a result gel is too dilute, can not form a film, and is also not used to clean.
Reference examples 2:
Content and implementation process according to the invention, by 1 part of borax, 2 parts of polyvinyl alcohol, 30 parts of normal propyl alcohol, 210 parts of water systems
Standby peelable gel, as a result gel is too hard, and colloid and wall painting pigment layer surface binding force are weak, can not obtain cleaning effect.
Reference examples 3:
According to the scheme and step of embodiment 1, organic solvent ethyl acetate is only changed to the second of same mass percent
The paraxylene of acid butyl ester or paraxylene or acetone or n-amyl alcohol or 1:1 and n-amyl alcohol mixed solvent, institute
It obtains peelable gel-organic solvent combination to be mutually layered, can not carry out sticking operation.
Reference examples 4:
As control experiment, the peelable gel of variety classes and different ratio is prepared:
(1) sodium alginate gel: formula 1) be ethyl alcohol 10ml, propylene glycol 1ml, water 65ml, glycerol 3ml, sodium alginate 1g,
Carboxymethyl cellulose 4g, polyvinyl alcohol 15g;2) formula is ethyl alcohol 10ml, propylene glycol 1ml, water 65ml, glycerol 3ml, sodium alginate
0.5g, carboxymethyl cellulose 2g, polyvinyl alcohol 7.5g;3) formula is ethyl alcohol 10ml, propylene glycol 1ml, water 65m, glycerol 3ml, sea
Mosanom 0.6g, carboxymethyl cellulose 2.4g, polyvinyl alcohol 9g;4) formula is ethyl alcohol 10ml, propylene glycol 1ml, water 65ml, glycerol
3ml, sodium alginate 0.3g, carboxymethyl cellulose 1.2g, polyvinyl alcohol 4.5g.Making step is first to moisten polyvinyl alcohol ethyl alcohol
It is wet, it is then added in the water of appropriate sodium benzoate, sodium alginate and carboxymethyl cellulose, heated constant temperature is stirred continuously to 70 DEG C,
It is allowed to uniformly mixed, stands overnight.Propylene glycol is added in next day, glycerol sufficiently stirs evenly, and obtains the peelable gel of sodium alginate.
(2) polyvinyl alcohol gel: formula 1) it is ethyl alcohol 0.4ml, propylene glycol 0.2ml, water 20ml, glycerol 0.2ml, poly- second two
Alcohol 2g, polyvinyl alcohol 2g;2) formula is ethyl alcohol 0.4ml, propylene glycol 0.2ml, water 20ml, glycerol 0.2ml, polyethylene glycol 2g, gathers
Vinyl alcohol 3g;3) formula is ethyl alcohol 0.4ml, propylene glycol 0.2ml, water 20ml, glycerol 0.2ml, polyethylene glycol 2g, polyvinyl alcohol
8g;4) formula is ethyl alcohol 0.4ml, propylene glycol 0.2ml, water 20ml, glycerol 0.2ml, polyethylene glycol 2g, polyvinyl alcohol 10g.Production
Step is dissolved polyvinyl alcohol in water, is heated to 70~80 DEG C, and ethyl alcohol, propylene glycol, glycerol, poly- second two are added after dissolution
Alcohol is sufficiently mixed, and obtains the peelable gel of polyvinyl alcohol.
(3) carboxy methylcellulose gel: formula 1) it is ethyl alcohol 0.4ml, propylene glycol 0.2ml, water 20ml, glycerol 0.2ml, carboxylic
Methylcellulose 4g;2) formula is ethyl alcohol 0.4ml, propylene glycol 0.2ml, water 20ml, glycerol 0.2ml, carboxymethyl cellulose 2g;Match
3) side is ethyl alcohol 0.4ml, propylene glycol 0.2ml, water 20ml, glycerol 0.2ml, carboxymethyl cellulose 1g;4) formula is ethyl alcohol
0.4ml, propylene glycol 0.2ml, water 20ml, glycerol 0.2ml, carboxymethyl cellulose 1.5g.Making step is by carboxymethyl cellulose
It is dissolved in water, heats 70~80 DEG C.Ethyl alcohol is added after dissolution, propylene glycol, glycerol, is sufficiently mixed, obtains carboxymethyl cellulose
Peelable gel.
The removing experiment of wall painting surface macromolecule strengthening agent is carried out instead of tincal gel, it is as a result all not ideal enough.
Certainly, the above enumerated are only specific embodiments of the present invention.It is clear that the invention is not restricted to above embodiments, also
Directly it can export or associate from present disclosure there are many deformation, those skilled in the art and is all
Deformation, is considered as protection scope of the present invention.
Claims (5)
1. a kind of peelable gel-organic solvent combination cleaning agent, which is characterized in that the cleaning agent is 10% mass fraction
Ethyl acetate or 10% mass fraction 1:1 mass ratio ethyl acetate and paraxylene mixed solvent with it is peelable
Gel mixes, the raw material composition of the peelable gel are as follows: 1 part of borax, 3~7 parts of polyvinyl alcohol, normal propyl alcohol 40~60
Part, 220~280 parts of water.
2. peelable gel-organic solvent combination cleaning agent according to claim 1, which is characterized in that the cleaning
Agent adds the borax of 0.1~0.6% mass fraction in organic solvent and peelable gel mixed process.
3. a kind of preparation method of peelable gel-organic solvent combination cleaning agent as claimed in claim 1 or 2, feature
It is, specific preparation process is as follows:
(1) preparation of peelable gel:
In parts by weight, raw material forms are as follows: 1 part of borax, 3~7 parts of polyvinyl alcohol, 40~60 parts of normal propyl alcohol, 220~280 parts of water;
Water is respectively charged into two containers of A, B, borax is put into A container, it is slightly hot, after stirring and dissolving, normal propyl alcohol is added;It will gather
Vinyl alcohol pours into B container, and sealing stirring is heated to 80~90 DEG C and makes it dissolve;Then the solution of B container is fallen under stiring
In the solution for entering A container, agitating and heating is sealed, 3h is reacted under the conditions of 80~90 DEG C, is cooled to room temperature, obtained peelable solidifying
Glue, sealed storage;
(2) mixed organic solvents
By the ethyl acetate of 10% mass fraction or the ethyl acetate and paraxylene of the 1:1 mass ratio of 10% mass fraction
Mixed solvent mixed with peelable gel, be heated with stirring to about 60 DEG C, and suitably mend depending on the viscosity situation of colloid after mixing
The borax for adding 0.1~0.6% mass fraction obtains peelable gel-organic solvent combination cleaning agent.
4. a kind of peelable gel-organic solvent combination cleaning agent as claimed in claim 1 or 2 is used for wall painting surface macromolecule
Reinforcement material sweep-out method, which is characterized in that specific step is as follows:
1) peelable gel-organic solvent combination cleaning agent is put down and is spread on preservative film;
2) size is cut suitable degreasing cotton gauze to be layered on peelable gel-organic solvent combination cleaning agent, is pressed lightly on,
It is attached on peelable gel-organic solvent combination cleaning agent uniformly on gauze;
3) gauze is turned, takes preservative film off, gauze and gel have become whole piece gel plaster body at this time;
4) the gel face of plaster body is sticked on to the wall painting surface for needing to clean, is pressed lightly on, gel gradually retrogradation becomes jelly
Shape is torn off after 20~25 minutes, can come out the macromolecule reinforcement material partial adsorbates in coat of colo(u)r and lime layer;
5) when primary removing does not reach requirement, can repeat 1)~4) step repeatedly removes.
5. a kind of peelable gel-organic solvent combination cleaning agent as claimed in claim 4 adds for wall painting surface macromolecule
Gu material sweep-out method, which is characterized in that the peelable gel-organic solvent combination cleaning agent be coated on wall painting surface with
Afterwards, closely connected with mural painting, preliminary gelling time is 20 minutes, can easily uncover after preliminary gelling, will not injure wall painting surface
Coat of colo(u)r.
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JP6695749B2 (en) * | 2016-06-30 | 2020-05-20 | ライオン株式会社 | Film forming agent for cleaning and cleaning method using the same |
CN106479739B (en) * | 2016-12-30 | 2021-09-07 | 敦煌研究院 | Cleaning material and cleaning process for treating smoking diseases of ancient murals with surface coatings |
CN108611649B (en) * | 2018-05-11 | 2020-01-07 | 佛山市高明利钢精密铸造有限公司 | Surface cleaning method for stainless steel master alloy cast ingot |
CN111826021B (en) * | 2020-06-12 | 2022-08-05 | 西北工业大学深圳研究院 | Organic gel for removing polyacrylic resin on surface of mural based on nano calcium hydroxide and preparation method thereof |
CN113385487A (en) * | 2021-04-22 | 2021-09-14 | 西安工业大学 | Method for removing animal glue on surface of mural by using polyvinyl alcohol hydrogel |
CN113637184B (en) * | 2021-08-19 | 2023-11-21 | 西安工业大学 | Preparation method of microemulsion-loaded polyvinyl alcohol gel |
CN115044418A (en) * | 2022-06-30 | 2022-09-13 | 敦煌研究院 | Cleaning material and cleaning process for cleaning smoke stains on surface of ancient mural |
CN115178509A (en) * | 2022-07-11 | 2022-10-14 | 南京博物院 | Sizing material colored drawing cultural relic reinforcement and surface clay cleaning method considering archaeological unearthing |
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