CN115820123A - Stone cultural relic color filling protection material and preparation and use methods thereof - Google Patents

Stone cultural relic color filling protection material and preparation and use methods thereof Download PDF

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CN115820123A
CN115820123A CN202211238727.4A CN202211238727A CN115820123A CN 115820123 A CN115820123 A CN 115820123A CN 202211238727 A CN202211238727 A CN 202211238727A CN 115820123 A CN115820123 A CN 115820123A
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color filling
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glue
stone
filling
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CN115820123B (en
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张旭
朱一青
孟德成
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Guowen Kebao Beijing New Material Technology Development Co ltd
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Guowen Kebao Beijing New Material Technology Development Co ltd
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Abstract

The invention discloses a stone cultural relic surface color filling protection material and a preparation method and a use method thereof, aiming at providing a novel stone cultural relic surface color filling protection material on the basis of fully considering the influence of the color filling material on the cultural relic material damage and considering the influence on the stone carving color filling cleaning and secondary color filling, which can meet the display requirement of stone carving, can not generate adverse influence on the stone carving, and can carry out barrier-free replacement when a new material with better performance exists. The stone cultural relic color filling protection material is prepared from the following components in percentage by mass: 14 to 20 percent of natural mineral pigment, 60 to 72 percent of fish glue and 14 to 20 percent of nano modified material; the mass percentage is based on the total mass of the color filling protection material.

Description

Stone cultural relic color filling protection material and preparation and use methods thereof
Technical Field
The invention relates to the technical field of cultural relic repair, in particular to a stone cultural relic color filling protection material and a preparation and use method thereof.
Background
The stone cultural relics are the most important cultural relics in the historical development process of human beings, and have important historical and cultural values. Mainly includes Moya stone carving, statue making, tombstone, inscription making, building stone carving, etc. The large-scale mochi stone engraving and figuration can be engraved on cliff wall, and in order to show information and value of the mochi stone engraving, figuration and inscription and improve the viewing effect, the large-scale mochi stone engraving and figuration is mostly processed by color filling. According to investigation, ancient people mostly use animal glue and natural mineral pigments to prepare the color filling material when filling the stone cultural relics, the traditional color filling material has the characteristics of bright color and difficult fading, but the animal glue has poor stability, and the color filling material is easy to mildew, chalk and the like under the influence of external factors to cause the falling of the color filling material.
The method is limited by the restriction of cultural relic protection technology and concept, in recent years, the modern paint and latex paint are mostly adopted for color filling in the process of carving and figuring on the cliff, on one hand, the artistic value of the stone cultural relic is greatly reduced after the color filling of the modern paint and latex paint, which hinders the appearance, on the other hand, the coating of the paint and latex paint can block the pores of the cultural relic body, influence the volatilization of water in the rock, cause the enrichment of soluble salt, and have adverse influence on the preservation and protection of the cultural relic. Meanwhile, due to the influence of the external environment, the paint and the emulsion paint are easy to generate the problems of fading, discoloring, armor raising, peeling and the like, and can cause the destruction of the cultural relic body in serious cases.
Disclosure of Invention
Aiming at the defects of the prior color filling protection technology, the invention provides a stone cultural relic surface color filling protection material, aiming at providing a novel stone cultural relic surface color filling protection material on the basis of fully considering the influence of the color filling material on the cultural relic material damage and considering the influence on the stone carving color filling cleaning and secondary color filling, which can meet the display requirement of stone carving without generating adverse influence on the stone carving and can carry out barrier-free replacement when a new material with better performance is available.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the invention provides a stone cultural relic color filling protection material which is prepared from the following components in percentage by mass: 14 to 20 percent of natural mineral pigment, 60 to 72 percent of fish glue and 14 to 20 percent of nano modified material; the mass percentage is based on the total mass of the color filling protection material.
Further, the composition is prepared from the following components in percentage by mass: 20% of natural mineral pigment, 60% of fish glue and 20% of nano modified material.
Further, the natural mineral pigment is one or more of chalk, sierozem powder, muscovite, calamine, titanium dioxide, cinnabar, hematite, realgar, orpiment, lead yellow, azurite, chrysolite and malachite green.
Further, the solid content of the swimming bladder glue is 10 percent.
Furthermore, the nano modified material is nano silicon dioxide solution, the solid content of the nano modified material is 30%, and the particle size distribution (D50) is less than or equal to 15nm.
The second aspect of the invention provides a preparation method of the stone cultural relic color filling protection material, which comprises the following steps:
step 1: selection and preparation of natural mineral pigments: selecting proper natural ore according to the characteristics and requirements of the object to be color-filled, grinding, grading, refining to obtain pigment powder with different particle sizes, and screening the pigment powder for later use;
step 2: preparing fish glue: the preparation of the fish glue can be prepared from fresh fish maw, dry fish maw or fish glue finished products, and the solid content is 10 percent;
and step 3: modification of fish glue: after the prepared fish glue with the solid content of 10% is cooled, nano silicon dioxide solution with the solid content of 30% and the particle size distribution (D50) of less than or equal to 15nm is added, and the mass ratio of the fish glue to the nano silicon dioxide solution is 3:1, fully stirring to complete the modification of the fish glue;
and 4, step 4: preparing a color filling protection material: taking a proper amount of modified fish glue, adding a proper amount of natural mineral pigment, and uniformly stirring.
Further: the preparation method of the fish glue comprises the following steps:
step 1: after fresh swimming bladder is obtained, the film, fat layer and microvessels of the swimming bladder wall are peeled off, longitudinally cut into slices, rinsed, completely decontaminated, soaked in alum solution of about 0.05 percent for a plurality of minutes, alum is not excessive so as not to influence the luster of the product, the slices or strips are made after careful rinsing, water is pressed off, and the product is aired in a ventilated place and is in a semitransparent and light yellow slice, namely the dried swimming bladder.
Step 2: and (5) soaking and foaming. Soaking the selected swimming bladder in clear water, cutting into small pieces as small as possible after softening, and soaking for 24 hr.
And step 3: and (5) steaming in a pot. When the swim bladder body becomes soft and white, fishing out from water, collecting the water, putting the collected water on a plate, putting the plate into a pressure cooker (or a common steamer) for steaming for about three to forty minutes, taking one piece, biting with teeth, and feeling glutinous and soft, and sticking the teeth.
And 4, step 4: and (5) smashing the glue. The gum is taken out and immediately put into a garlic mortar for long time pounding (in the past, pounding is generally carried out on a chopping board by a hammer), the longer the pounding time, the more broken the swim bladder, the better the pounding time, and thus the gum yield is high. If pectin is dry, adding appropriate amount of boiled water, and pounding.
And 5: and (5) decocting the glue. Taking out the beaten glue, putting on gauze, and packaging. Boiling water in an iron pan, putting a proper amount of boiled water in the iron bowl, putting the gauze in the iron bowl, soaking and extruding at the same time, and repeating the steps until all glue solution is permeated into the bowl. The left swimming bladder residues can be dried in the air for the next use.
Step 6: and (7) airing. Pouring the glue solution in the bowl into a large and flat appliance, condensing the glue solution into a thin frozen object at the bottom of the appliance, tearing the frozen object off after a period of time, placing the torn object in a ventilated place for airing until the water is completely volatilized, and storing the dried and hard glue in a closed appliance for later use.
And 7: preparing glue solution: taking 10g of dried fish glue, adding 90g of deionized water, soaking for 10-15 hours, then shearing with scissors, decocting in 80 ℃ constant temperature water bath for 4 hours, continuously stirring in the decocting process, adding deionized water, and ensuring that the solid content of the glue solution is 10% after the glue solution is prepared.
The third aspect of the invention provides a use method of the surface color filling protection material based on the stone cultural relic, which comprises the following steps:
firstly, cleaning and washing surface pollutants on the stone cultural relics to remove the surface pollutants in a region to be color filled;
step 2, performing color filling treatment after cleaning and drying for 24 hours and when the surface water content is less than 5%;
step 3, mixing the color filling material in situ before use, stirring the mixture evenly before use, and finishing the preparation work of the color filling material according to the steps;
and 4, dipping the prepared color filling material by using a line drawing pen to trace the stone carving, namely directly tracing the stone carving according to the size of the character groove and the thickness of the line. In the color filling process, the color filling material needs to be repeatedly and uniformly coated, so that material sagging and uneven thickness cannot be generated, and the color filling material cannot be coated outside a stone carving color filling area;
and 5: and testing the free water permeability and the ultrasonic wave speed of the front and rear surfaces of the color filling protection of the color filling area by adopting a nondestructive testing technology, detecting the chromaticity of the whole color filling area, and carrying out on-site inspection and evaluation on the color filling effect through the comparative analysis of data.
The invention has the following beneficial effects:
1) The color filling protection material is modified by scientific and technological means on the basis of the traditional materials and processes, has the advantages of the traditional materials and the modern materials, and has the good characteristics of natural environment friendliness, no toxicity, no harm, no corrosion, good environmental aging resistance, and difficult fading and discoloration;
2) The color filling protection material has the advantages of rich and easily-obtained raw materials, low price, simple and feasible preparation process, no adverse effect on operators and convenient treatment of residual materials;
3) The color filling protection material and the preparation method are suitable for color filling protection work of stone cultural relics such as Moya rock carving, stele carving, moya statue and the like, the performance of the stone cultural relics is slightly changed after color filling, the cultural relic material still can keep excellent pore connectivity and air permeability, moisture in the stone carving can communicate with the outside in a water vapor mode, the normal exchange of water vapor can be carried out on the whole body after color filling, the requirement of protecting and displaying the stone cultural relics can be met in the color filling protection of the stone cultural relics, and the cultural relic body cannot be damaged;
4) The color filling protection material has good reversibility and retreatability, and can be replaced without obstacles once a new material with better performance exists, thereby conforming to the principle and the requirement of cultural relic protection.
Drawings
FIG. 1 is a graph comparing cleaning results in a reprocessability test of example 1;
FIG. 2 is a comparison of the appearance before and after "color" filling in example 1;
FIG. 3 is a comparison of the appearance before and after the "dark space" color filling in example 1;
FIG. 4 is a comparison diagram of the appearance before and after the color filling of the wind tunnel lithotomy (I);
FIG. 5 is a comparison of the appearance before and after the color filling of the wind tunnel litho (II) litho;
fig. 6 is a comparison diagram of the appearance before and after the stone engraving and color filling of the wind tunnel stone engraving (III).
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and 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. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without performing any breakthrough research belong to the protection scope of the present invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
In the embodiment, a national key cultural relic protection unit Ji Yunshan is carved with stones as an implementation object, indoor research tests and field color filling protection projects are developed in 2015 to 2017, the results of the indoor research tests are approved by the national cultural relic bureau, and the field implementation projects pass the acceptance of the national cultural relic bureau of Anhui, which is specifically as follows:
1. indoor research experiment
(1) Sample preparation
The red sandstone with the same stone-carving material as the national key cultural relic protection unit Ji Yunshan is used as the color filling case in the embodiment. Sandstone is selected in the material experiment, is taken from Ji Yunshan stone-carved original producing area, and has sample specifications of 10mm multiplied by 5mm multiplied by 2cm and 5mm multiplied by 2 cm.
The surface color filling protection material for the stone cultural relics is prepared by the following method:
step 1: selecting proper natural ore according to the color of Ji Yunshan stone-carving original color-filling material, crushing, grinding, grading and refining to obtain pigment powder with different particle sizes;
step 2: taking 10g of dried fish glue, adding 90g of deionized water, soaking for 10-15 hours, then shearing with scissors, decocting in a constant-temperature water bath at 80 ℃ for 4 hours, continuously stirring in the decocting process, adding deionized water, and ensuring that the solid content of the glue solution is 10 percent after the glue solution is prepared;
and step 3: after the prepared swimming bladder glue with the solid content of 10 percent is cooled, a certain amount of nano silicon dioxide solution with the solid content of 30 percent and the particle size distribution (D50) of less than or equal to 15nm is added and fully stirred to complete the modification of the swimming bladder glue;
and 4, step 4: taking a proper amount of modified swimming bladder glue, adding a proper amount of natural mineral pigment, and uniformly stirring;
and 5: and (3) uniformly coating the prepared color filling materials with different proportions on the test sample plate, and naturally drying for one week for later use.
The components and mass ratio of the stone carving surface color filling material described in this example are shown in the following table-1.
TABLE-1
Figure SMS_1
Figure SMS_2
Comparative example
Comparative examples are current paints and latex paints numbered 1 (paint) and 2 (latex paint) and 0 (blank).
(2) Test of Material Properties
In the test process, in order to analyze and judge the influence of color-filling materials with different proportions, components and types on the rock performance and the environmental aging resistance, a water repellency test, a permeability test, an adhesion test and a water resistance test are respectively completed for each test sample plate, and the water repellency test method is carried out by adopting a cass through pipe according to the standard DIN 52617; the air permeability test method is carried out by adopting a wet cup method; the adhesion test method is carried out by adopting a grid-scribing tester; the water resistance test was carried out by a dipping method.
Test results
The results of the performance tests of the samples are shown in Table-2 below
TABLE-2
Figure SMS_3
Figure SMS_4
The test data show that after the test sample plate is coated with the paint and the emulsion paint, the free water permeability of the surface of the rock is obviously reduced, the water vapor permeability is almost zero, the coating of the paint and the emulsion paint can block and seal the pore structure of the rock, compared with the existing paint and the emulsion paint, the color filling material of the embodiment has better water resistance, the change of the stone carving performance after the coating is smaller, the cultural relic material can still keep excellent pore permeability and air permeability, the water inside the stone carving can be communicated with the outside in the form of water vapor, the normal exchange of water vapor can be carried out on the whole body after the color filling, the stress damage to the stone carving can not be generated, and the color filling and displaying work of the stone carving is suitable.
(3) Environmental aging resistance test
To further judge the environmental aging resistance of the color-filling protective materials used in the examples, an environmental simulation aging test was conducted to age for 42 cycles, each for 24 hours. The indoor items include: comprehensive environment aging test, ultraviolet light aging test, SO 2 Gas corrosion test, rain test.And evaluating the environmental aging resistance of the material according to the change conditions of appearance, chromaticity and adhesive force of the test sample plates before and after the test.
Test results
The results of the environmental aging resistance test of the sample are shown in Table-3, table-4 and Table-5 below.
TABLE-3 changes in appearance of various plaques before and after aging test
Figure SMS_5
Figure SMS_6
Figure SMS_7
TABLE-4 change in chroma (color difference) of various boards before and after aging test
Figure SMS_8
Figure SMS_9
TABLE-5 comparison of adhesion of color filling materials of samples before and after aging test
Figure SMS_10
Figure SMS_11
After the 42-period simulated environment aging test, analysis on the change data of the appearance, the color difference and the adhesive force before and after the test sample plate coated with different color filling protective materials is subjected to the aging test can show that the test sample plate coated with the paint and the emulsion paint has obvious change of the appearance after aging, has the phenomena of cracking, falling and fading in different degrees, has a high color difference value and obviously becomes low in the adhesive force. The appearance of the test sample plate using the natural mineral pigment, the fish glue and the nano-scale silicon dioxide color filling protective material is not obviously changed after aging, partial sample plates have slight phenomena of dropping and fading, the color difference value is low, and the adhesive force is not obviously reduced.
In the whole view, when the color filling protective material is prepared from 20% of natural mineral pigment, 60% of fish glue and 20% of nano-silicon dioxide, the environmental aging resistance of the material is optimal, and the color filling protective material is used in a comprehensive environmental aging test, an ultraviolet light aging test and an SO (sulfur oxide) aging test 2 The obvious phenomena of shedding and fading do not occur after a gas corrosion test and a rain test, and good adhesive force is kept.
(4) Test for reworkability
According to the Chinese ancient painting protection standard and the industry requirement, mature technology which is proved to be beneficial to long-term preservation of the ancient painting of the cultural relic should be used in the cultural relic protection, and the original technology and material of the ancient painting of the cultural relic should be protected. The traditional process which is scientific and is beneficial to the long-term protection of cultural relics and ancient sites should be inherited. All new materials and processes need to be tested in the early stage, which proves that the method is practical and effective, harmless and harmless to long-term preservation of cultural relics and ancient sites, and can be used. The technical measures applied to the historical relic protection should not hinder further protection in the future, and reversible protective measures should be adopted as far as possible, so that when better technical measures are available, the prior technical measures can be cancelled without causing loss to the historical relic body and the value thereof.
In order to verify the reversibility and the reprocessing performance of the protective material in example 1, a reprocessing performance test is carried out, a Ji Yunshan local red sandstone is selected to prepare a test sample, then the color filling protective material is prepared according to the proportion and coated on the test sample, and the test sample is naturally dried for one week to carry out a surface color filling protective material removal test.
As shown in fig. 1, it can be seen from the reprocessability test that the color filling protective material on the surface of the YB1 sample plate can not be removed basically, the color filling protective material on the surface of the YB2 sample plate can be removed basically, but a small amount of residue exists, and the color filling protective material on the surface of the YB3 sample plate can be completely removed by directly brushing with clean water. The color filling protection materials on the surfaces of the three test sample plates can be completely removed by adopting a mode of cleaning with saturated steam and brushing the camera with clean water, and no residue is left. The rock itself will not be damaged in the cleaning process, and the implementation of the color filling protection work again will not be influenced.
2. In-situ color fill protection
(1) Color-filling protective material
The color filling material comprises, by mass, 20% of natural mineral pigments, 60% of fish glue and 20% of nano-scale silicon dioxide, wherein the natural mineral pigments are orpiment, chrysolite and titanium dioxide, the fish glue is a natural fish glue solution with the solid content of 10%, and the nano-scale silicon dioxide is a nano-silica solution with the solid content of 30% and the particle size distribution (D50) of less than or equal to 15nm.
(2) The surface color filling protection material for the stone cultural relics is prepared by the following method:
step 1: selecting proper natural ores, female yellow, bronze stone and rutile according to the color of Ji Yunshan stone carving original color filling materials, crushing, grinding, grading and refining to obtain stone yellow, bronze stone powder and titanium dioxide with different particle sizes for later use;
step 2: taking 300g of dried fish glue, adding 2700g of deionized water, soaking for 10-15 hours, then shearing into pieces by using scissors, decocting for 4 hours in a constant-temperature water bath at 80 ℃, continuously stirring in the decocting process, adding deionized water, and ensuring that the solid content of the glue solution is 10 percent after the glue solution is prepared;
and 3, step 3: after airing the prepared swimming bladder glue with the solid content of 10 percent, adding 1000g of nano silicon dioxide solution with the solid content of 30 percent and the particle size distribution (D50) of less than or equal to 15nm, and fully stirring to finish the modification of the swimming bladder glue;
and 4, step 4: taking a proper amount of modified fish glue, adding natural mineral pigment with the mass being 1/4 of the total mass of the glue solution, and uniformly stirring to prepare the color filling protective material for later use.
(3) The surface color filling protection material for the stone cultural relics and the preparation method thereof are used by the following method:
firstly, cleaning and washing surface pollutants of stone cultural relics to be color-filled and protected to remove the surface pollutants in a region to be color-filled;
step 2, performing color filling treatment after cleaning and drying for 24 hours and when the surface water content is less than 5%;
step 3, mixing the color filling material in situ before use, stirring the mixture evenly before use, and finishing the preparation work of the color filling material according to the steps;
and 4, dipping the prepared color filling material by using a line drawing pen to trace the stone carving, namely directly tracing the stone carving according to the size of the character groove and the thickness of the line. In the color filling process, the color filling material needs to be repeatedly and uniformly coated, so that material sagging and uneven thickness cannot be generated, and the color filling material cannot be coated outside a stone carving color filling area;
and 5: and testing the free water permeability and the ultrasonic wave speed of the front and rear surfaces of the color filling protection of the color filling area by adopting a nondestructive testing technology, detecting the chromaticity of the whole color filling area, and carrying out on-site inspection and evaluation on the color filling effect through the comparative analysis of data.
(4) Contrast of color filling effect
The color matching protection object in the color matching protection is Ji Yunshan lithograph, and the color matching protection processing is carried out on 14 lithographs in total, and the color matching protection method mainly comprises the following steps: longevity, fallin Jade boundary, ji Yun scenery, mysterious scene, black tiger rock, bai mountain house, open county, snow mud, open county, tianchi, true mon, white mountain, rain rock mountain, cloud deep. Before and after color filling, the stone carving ultrasonic wave speed and the surface free water permeability are detected, and meanwhile, the chroma and the glossiness after color filling protection are tested and compared with a standard sample plate, so that the color filling protection effect is evaluated.
Evaluation results
The performance change before and after stone cut color filling protection and the detection result of the uniformity of the color filling protection material are respectively shown in the following tables-6 and-7.
TABLE-6 detection results of ultrasonic wave and surface free water permeability data before and after color filling
Figure SMS_12
Figure SMS_13
Figure SMS_14
Figure SMS_15
After the color filling protection work is finished, except that the word mouth of 'other places' is too small to be detected, other 12 pieces of color filling stone are subjected to ultrasonic wave speed and surface self-water permeability detection, and according to data contrast analysis, the ultrasonic wave speed increase after the color filling of each color filling stone is below 10%, the surface self-water permeability is unchanged or slightly reduced after the color filling, the performance of the stone carving body is hardly influenced by the coating of the surface color filling protection material, and the requirements of cultural relic protection principle are met.
TABLE-7 results of data on the change in chroma before and after color filling and the gloss after color filling
Figure SMS_16
Figure SMS_17
Figure SMS_18
Figure SMS_19
Figure SMS_20
After color filling is finished, except that the characters of 'other places' are too small to be detected, other color filling gravels are subjected to chromaticity and glossiness detection, through data comparison analysis, the difference value of the same gravels after the color filling of each color filling gravel is below 6.5, human eyes can not identify basically, the color uniformity is good, and the surface glossiness of the color filling gravels after the color filling is between 0 and 2.
As shown in fig. 2, the appearance of the "longevity" is compared before and after color filling (2015, 2021 for left-to-right shooting time, respectively). As shown in fig. 3, "the" dark space "is compared before and after color filling (the left to right shooting times are 2017, and 2022, respectively).
The stone carving appearance comparison before and after color filling protection and after 5 years of color filling protection shows that the display of stone carving information and artistic value is effectively improved after the color filling protection, and the stone carving is favorable for the observation. The stone carving color filling protection material has no phenomena of fading, color change and falling after 5 years, and has good preservation state.
Example 2
1. Color-filling protective material
In the embodiment, guilin stone carving is taken as a color filling protection object, and color filling protection is respectively carried out on Putuo mountain stone carving and Yu mountain stone carving. The stone carving color filling protection relates to more than ten places of stone carving, namely on Putuoshan and Yushan of Yushan parks of Qixing parks in Guilin city, the stone carving material is limestone, and the stone carving is in an open environment, so that the stone carving is totally faded at present and the stone carving content is fuzzy.
The color filling material comprises, by mass, 20% of natural mineral pigment, 60% of fish glue and 20% of nano-scale silicon dioxide, wherein the natural mineral pigment is rock green, the fish glue is a natural fish glue solution with the solid content of 10%, and the nano-scale silicon dioxide is a nano-scale silicon dioxide solution with the solid content of 30% and the particle size distribution (D50) of less than or equal to 15nm.
2. The surface color filling protection material for the stone cultural relics is prepared by the following method:
step 1: selecting proper natural ore malachite according to the color of the original color filling material for Guilin stone carving, crushing, grinding, grading and refining to obtain stone green with different particle sizes by screening;
step 2: taking 30g of dried fish glue, adding 270g of deionized water, soaking for 10-15 hours, then shearing the fish glue into pieces by using scissors, decocting the fish glue in a 80 ℃ constant-temperature water bath for 4 hours, continuously stirring the fish glue in the decocting process, adding the deionized water, and ensuring that the solid content of the fish glue is 10 percent after the glue solution is prepared;
and step 3: after the prepared swimming bladder glue with the solid content of 10% is cooled, 100g of nano silicon dioxide solution with the solid content of 30% and the particle size distribution (D50) of less than or equal to 15nm is added, and the mixture is fully stirred to complete the modification of the swimming bladder glue;
and 4, step 4: taking a proper amount of modified fish glue, adding 100g of natural mineral pigment rock green, and uniformly stirring to prepare the color filling protective material for later use.
3. The surface color filling protection material for the stone cultural relics and the preparation method thereof are used by the following method:
firstly, cleaning and washing surface pollutants of the stone cultural relic to be color-filled and protected to remove the surface pollutants in the area to be color-filled;
step 2, performing color filling treatment after cleaning and drying for 24 hours and when the water content of the surface layer is less than 5%;
step 3, mixing the color filling material as it is, stirring the mixture evenly before use, and completing the preparation of the color filling material according to the steps;
and 4, dipping the prepared color filling material with a line drawing pen to trace the stone carving, namely directly tracing the stone carving according to the size of the character groove and the thickness of the line. In the color filling process, the color filling material needs to be repeatedly and uniformly coated, so that material sagging and uneven thickness cannot be generated, and the color filling material cannot be coated outside a stone carving color filling area;
and 5: and testing the free water permeability and the ultrasonic wave speed of the front and rear surfaces of the color filling protection of the color filling area by adopting a nondestructive testing technology, detecting the chromaticity of the whole color filling area, and carrying out on-site inspection and evaluation on the color filling effect through the comparative analysis of data.
(4) Contrast of color filling effect
The color filling protection is performed by taking Guilin stone carving as a color filling protection object, detecting the ultrasonic wave speed and the surface free water permeability of the stone carving before and after color filling, testing the chroma and the glossiness after color filling protection, and comparing the chroma and the glossiness with a standard sample plate so as to evaluate the color filling protection effect.
Evaluation results
The performance change before and after the stone engraving color filling protection and the detection results of the uniformity of the color filling material are shown in the following tables-8 and-9
TABLE-8 detection results of ultrasonic wave and surface free water permeability data before and after color filling
Figure SMS_21
Figure SMS_22
Except the 'meta wind tunnel' stone carving, the other stone carving is small in whole, related detection work cannot be carried out, ultrasonic wave speed and surface self-water permeability detection are only carried out on the meta wind tunnel stone carving, and data comparison and analysis show that the ultrasonic wave speed is not obviously changed after the stone carving color-filling protection, the change amplitude is within 5%, the surface free water permeability is not changed or is slightly reduced after color filling, the performance of a stone carving body is hardly influenced by painting of a surface color-filling protection material, and the requirement of a cultural relic protection principle is met.
TABLE-9 results of data on chroma change before and after color filling and glossiness after color filling
Figure SMS_23
After color filling is finished, chromaticity and glossiness detection are carried out on the element wind tunnel stone carving, through data comparison analysis, the extreme value color difference value of the color filling protection material in each font after the stone carving is filled with color is 3.7, human eyes can not recognize basically, color uniformity is good, the surface glossiness of the stone carving after the stone carving is filled with color is 0-1, and the viewing effect is good.
As shown in fig. 4, the appearance of the original wind tunnel stone carving (one) is compared before and after color filling; FIG. 5 shows the comparison of the appearance before and after the stone-cut and color-filling of the wind tunnel; fig. 6 shows the comparison of the appearance before and after the color filling of the wind tunnel stone carving (III).
The image data of the stone carving is respectively reserved before and after the stone carving color filling protection is carried out, and the color filling protection test effect of the stone carving is evaluated through the comparison and the field observation of the photos before and after the color filling protection. After the stone carving color filling protection is completed, the stone carving content is fully displayed, the blurred stone carving content is clearly displayed, the stone carving visibility and the display effect are improved, and the requirement of combination of protection and display is met. The subsequent protection and display requirements of the Yushan lithotomy can be met.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments of the embodiments, and it is easily understood by those skilled in the art that the above description is only a part of the embodiments of the present invention, and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. A stone cultural relic color filling protection material is characterized in that: the paint is prepared from the following components in percentage by mass: 14 to 20 percent of natural mineral pigment, 60 to 72 percent of fish glue and 14 to 20 percent of nano modified material; the mass percentage is based on the total mass of the color filling protection material.
2. The color-filling protective material for stone cultural relics, which is characterized in that: the paint is prepared from the following components in percentage by mass: 20% of natural mineral pigment, 60% of fish glue and 20% of nano modified material.
3. The stone cultural relic color-filling protection material as claimed in claim 1, wherein: the natural mineral pigment is one or more of chalk, ash calcium powder, muscovite, calamine, titanium dioxide, cinnabar, hematite, realgar, orpiment, lead yellow, azurite, chrysolite and malachite green.
4. The color-filling protective material for stone cultural relics, which is characterized in that: the solid content of the fish glue is 10%.
5. The color-filling protective material for stone cultural relics, which is characterized in that: the nano modified material is nano silicon dioxide solution, the solid content of the nano modified material is 30%, and the particle size distribution (D50) is less than or equal to 15nm.
6. A method for preparing the stone cultural relic color filling protection material as claimed in claim 1, which is characterized in that: the method comprises the following steps:
step 1: selection and preparation of natural mineral pigments: selecting proper natural ore according to the characteristics and requirements of the object to be color-filled, grinding, grading, refining to obtain pigment powder with different particle sizes, and screening the pigment powder for later use;
step 2: preparing fish glue: the preparation of the fish glue can be prepared from fresh fish maw, dry fish maw or fish glue finished products, and the solid content is 10 percent;
and step 3: modification of fish glue: after the prepared fish glue with the solid content of 10% is cooled, nano silicon dioxide solution with the solid content of 30% and the particle size distribution (D50) of less than or equal to 15nm is added, and the mass ratio of the fish glue to the nano silicon dioxide solution is 3:1, fully stirring to complete the modification of the fish glue;
and 4, step 4: preparing a color filling protection material: taking a proper amount of modified fish glue, adding a proper amount of natural mineral pigment, and uniformly stirring.
7. The method for preparing the color-filling protection material for the stone cultural relics, which is claimed in claim 6, is characterized in that: the preparation of the fish glue comprises the following steps:
step 1: after fresh swim bladder is obtained, the film, fat layer, microvessels and the like on the swim bladder wall are peeled off, longitudinally cut into pieces, rinsed, completely decontaminated, soaked in 0.03-0.06% of alum solution for a plurality of minutes, carefully rinsed, made into pieces or strips, pressed to remove moisture, and dried in a ventilated place, and the product is a semi-transparent and light yellow sheet, namely the dry swim bladder;
step 2: soaking and foaming: soaking the selected swimming bladder in clear water, cutting into small pieces as small as possible with scissors after softening, and continuing soaking;
and step 3: steaming in a pot: when the swim bladder body becomes soft and becomes white, fishing out the swim bladder body from water, stewing the water for thirty to forty minutes, taking out a piece of water to bite with teeth, and feeling glutinous and soft and sticking the teeth;
and 4, step 4: smashing glue: taking out the gelatin, immediately placing into a garlic mortar, and smashing for a long time, wherein the longer the smashing time, the more broken the swim bladder is, the better;
and 5: and (3) boiling the glue: taking out the beaten glue, placing on gauze, packaging, boiling water in an iron pan, placing a proper amount of boiling water in an iron bowl, placing gauze in the iron bowl, soaking and extruding at the same time, repeating the steps until the glue solution is completely permeated into the bowl, and airing the left swimming bladder residues for next use;
step 6: and (3) airing: pouring the glue solution in the bowl into a large and flat appliance, condensing the glue solution into a thin frozen object at the bottom of the appliance, tearing the frozen object off after a period of time, tearing the frozen object into small blocks, airing the small blocks in a ventilated place until all water is volatilized, and storing the dried and hard glue in a closed appliance for later use;
and 7: preparing glue solution: taking 10g of dried fish glue, adding 90g of deionized water, soaking for 10-15 hours, then shearing with scissors, decocting in 80 ℃ constant temperature water bath for 4 hours, continuously stirring in the decocting process, adding deionized water, and ensuring that the solid content of the glue solution is 10% after the glue solution is prepared.
8. The method for using the stone cultural relic color-filling protection material according to any one of claims 1 to 5, which comprises the following steps:
firstly, cleaning and washing surface pollutants on the stone cultural relics to remove the surface pollutants in a region to be color filled;
step 2, performing color filling treatment after cleaning and drying for 24 hours and when the water content of the surface layer is less than 5%;
step 3, mixing the color filling material in situ before use, stirring the mixture evenly before use, and finishing the preparation work of the color filling material according to the steps;
step 4, dipping the prepared color filling material with a line drawing pen to trace the stone carving, namely directly tracing the stone carving according to the size of the character groove and the thickness of the line; in the color filling process, the color filling material needs to be repeatedly and uniformly coated, so that material sagging and uneven thickness cannot be generated, and the color filling material cannot be coated outside a stone carving color filling area;
and 5: and testing the free water permeability and the ultrasonic wave speed of the front and rear surfaces of the color filling protection of the color filling area by adopting a nondestructive testing technology, detecting the chromaticity of the whole color filling area, and carrying out on-site inspection and evaluation on the color filling effect through the comparative analysis of data.
CN202211238727.4A 2022-10-11 2022-10-11 Stone cultural relic color filling protection material and preparation and use methods thereof Active CN115820123B (en)

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