JP3810487B2 - Tombstone surface protection method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a surface protection tombstone and a surface protection method for a tombstone.
[0002]
[Prior art]
In general, tombstones are soiled by external and internal factors. Contamination due to external factors is caused by splashing from the ground due to dirt or rain, rain marks including dirt traveling on the surface, adhesion of dirt components due to fallen leaves, etc., or chemical erosion of the surface by acidic chemical substances in rain water. In particular, there are minute holes and irregularities on the surface of the tombstone, and if dirt such as dirt adheres to it, the falling water such as rainwater diffuses the dirt adhering to the surface of the tombstone, and the dirty water is on the surface. Drops while remaining attached to the surface, causing dirt. In addition, when rainwater that has traveled on the surface contains dirt components such as acidic chemical substances, jumps from the ground, and fallen leaves, these dirt accumulates in minute holes and irregularities on the tombstone surface.
[0003]
In addition, the contamination due to internal factors is caused by the iron contained in the tombstone itself being oxidized by the acidic water that has permeated from the outside and floating on the surface in a stain-like manner.
Such dirt cannot be removed by simple cleaning, so that the appearance of the tombstone is significantly impaired.
[0004]
[Problems to be solved by the invention]
An object of the present invention is to provide a surface-protecting tombstone that can maintain a beautiful surface state that is difficult to be contaminated with dirt and is not chemically eroded over a long period of time.
[0005]
In addition, the present invention can maintain a beautiful surface state that does not easily adhere to dirt and is not chemically eroded over a long period of time, and also protects engraved character parts from the outside while maintaining a natural texture. It is intended to provide a tombstone surface protection method that can be done.
[0006]
[Means for Solving the Problems]
The method for protecting the surface of a tombstone according to the present invention is a step of embedding a sculpture character portion of a tombstone with a clay stuffing, then applying a surface protective agent mainly composed of a siloxane condensate and curing to form a cured film. And a step of applying a character protective agent containing alkoxysilane or a hydrolyzate thereof and colloidal silica to the exposed engraved character portion after removing the padding and curing to form a matte film. It is characterized by.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing a tombstone. The lower stone 1 is placed on a caroten (not shown) in which the urn is stored. The incense burner 2 is disposed in front of the lower base stone 1. The middle headstone 3 is placed on the lower headstone 1, and the water basin 4 is placed on the lower headstone 1 so as to be positioned in front of the middle headstone 3. The upper stone 5 is placed on the middle stone 3, and the meteorite 6 is placed on the upper stone 5. A sculpture character (not shown) such as a house name is attached to the front surface of the meteorite 6.
[0008]
A protective film having a siloxane bond is coated on the entire surface including the bottom surface of the lower head stone 1, the incense burner 2, the middle head stone 3, the water basin 4, the upper head stone 5 and the meteorite 6 that construct such a tombstone.
[0009]
As the tombstone, for example, white granite, black granite, komatsu stone, basalt, marble, sandstone and the like are used.
Next, the construction method of the surface protection film in the surface protection tombstone of the present invention will be described.
[0010]
First, the surface of the tombstone construction member described above is thoroughly washed and dried. Subsequently, a surface protective agent mainly composed of a siloxane condensate is applied to the entire surface including the bottom surface of the construction member using, for example, a spray gun, and cured at room temperature to form a surface protective film.
[0011]
Examples of the surface protective agent mainly composed of the siloxane condensate include (1) Add a small amount of dimethylsilane, diethylsilane and diphenyldichlorosilane to monomethylsilane, monoethylsilane and monophenyldichlorosilane, and add water to add water. A silicone varnish solution obtained by dissolving a trifunctional condensate (RSiO _1.5 ) and a bifunctional condensate (R ₂ SiO) obtained by decomposition with a solvent such as xylene, sodium acetate, zinc octylate, tetrabutyl titanate, A composition containing a curing accelerator such as aluminum acetylacetonate; (2) The condensate is modified by adding an organic resin such as an alkyd resin, an epoxy resin, an acrylic resin, or a urethane resin. A composition comprising a modified silicone varnish solution dissolved in a solvent and the aforementioned curing accelerator. Things, etc. are used. In particular, a surface protective film formed by applying and curing a surface protective agent containing a modified silicone varnish-based solution is beneficial because it can adhere more firmly to the tombstone surface. The curing accelerator is added to the silicone varnish solution or the modified silicone varnish solution just before being applied to the tombstone construction member.
[0012]
In applying the surface protective film, when the surface protective agent is applied using a spray gun, it is preferable to brush the surface protective agent on the engraved character portion prior to the application.
[0013]
The surface protective tombstone according to the present invention described above is chemically inert and has a pH of 2 because the protective film coated on the surface of the tombstone has a siloxane bond (Si-O-Si) similar to that of glass or quartz. It exhibits excellent corrosion resistance against acid of some degree, excellent water repellency and water permeability. As a result, the tombstone coated with the protective film can be prevented from being eroded by acidic chemical substances in rainwater. In addition, since the protective film has high water repellency, even if dirt components such as splashes of dirt or rain from the ground, dirt including rain that travels on the surface, and dirt components such as fallen leaves adhere, Can be removed. Furthermore, since the protective film has excellent acid resistance and water permeability, even if the tombstone itself contains iron, etc., it can prevent acid moisture from penetrating into the tombstone from the surface, so the iron content Occurrence of stains caused by oxidation can be prevented. Furthermore, the protective film exhibits excellent weather resistance.
[0014]
Therefore, it is possible to provide a surface protective tombstone capable of preventing contamination due to external and internal factors and maintaining a beautiful state of the tombstone surface for a long period of time.
In addition, by covering the tombstone with the above-described surface protective film having excellent characteristics, it becomes possible to use marble and sandstone which are conventionally unsuitable as a tombstone in terms of corrosion resistance and the like.
[0015]
Next, the tombstone surface protection method according to the present invention will be described.
(First step)
First, after embedding the sculpture character portion of a tombstone (meteorite, etc.) with a clay-like padding, the surface protective agent comprising the aforementioned siloxane condensate as a main component on the entire surface including the bottom surface of the construction member of the tombstone containing the meteorite. Is applied using, for example, a spray gun and cured to form a cured film (surface protective film).
[0016]
As the tombstone, for example, white granite, black granite, komatsu stone, basalt, marble, sandstone and the like are used. In particular, it is preferable to target tombstones made of dark stone (for example, black granite) that makes it difficult to read engraved letters when gloss is given.
[0017]
As the clay-like stuffing, oil clay having good peelability is preferable.
(Second step)
Next, after the padding of the engraved character portion is removed, a character protective agent containing alkoxysilane or a hydrolyzate thereof and colloidal silica is applied to the engraved character portion by brushing or the like and cured to form a matte film To do.
[0018]
Examples of the character protecting agent include (a) general formula R ¹ Si (OR ² ) ₃ (wherein R ¹ is an alkyl group such as a methyl group, an ethyl group or an n-propyl group, or a γ-chloropropyl group). , Vinyl group, 3,3,3-trichloropropyl group, γ-glycidoxypropyl group, γ-methacryloxypropyl group, γ-mercaptopropyl group, phenyl group, 3,4-epoxycyclohexylethyl group, γ-amino Propyl group, R ² represents an acyl group such as methyl group, ethyl group, n-propyl group, i-propyl group, n-butyl group, sec-butyl group, t-butyl group, acetyl group). that organoalkoxysilane or a hydrolyzate or the general formula Si (oR ³⁾ ₄ (provided that, R ³ in the formula is a methyl group, an alkyl group such as ethyl group, n- propyl group), represented by With that tetraalkoxysilane or a hydrolyzate thereof, a composition obtained by adding (b) colloidal silica and are dissolved dispersed in a solvent such as isopropyl alcohol, curing accelerator zirconium tetraalkoxide or trialkoxide such as boron into the solution. The curing accelerator is added to the solution containing the components (a) and (b) immediately before application to the engraved character portion of the tombstone construction member.
[0019]
According to the tombstone surface protection method according to the present invention described above, the engraved character portion of the tombstone is previously filled with a clay-like filling, and a surface protection agent mainly composed of a siloxane condensate is applied and cured, A cured film having the above-mentioned molecular structure having a siloxane bond (Si—O—Si) similar to glass or quartz and having excellent corrosion resistance against acid having a pH of about 2 and excellent water repellency and water permeability. (Surface protective film) can be formed firmly. As a result, contamination due to external and internal factors can be prevented, and the tombstone surface can be maintained in a beautiful state for a long period of time.
[0020]
Further, after the formation of the cured film, the clay-like padding embedded in the engraved character portion is peeled and removed to expose the engraved character portion. At this time, since the cured film (surface protective film) is firmly attached to the tombstone building member, only the padding can be removed without causing peeling of the protective film around the padding. In particular, the padding made of oil clay can be easily peeled off and removed from the engraved character portion. A matte film can be formed by applying a character protective agent containing alkoxysilane or a hydrolyzate thereof and colloidal silica to the engraved character portion thus exposed and curing it. The formed matte film can protect the engraved character portion from the outside world, and since it has poor gloss, the engraved character does not reflect and the character can be read clearly.
[0021]
Therefore, it is possible to maintain a beautiful surface state that is difficult to adhere to dirt and is not chemically eroded over a long period of time. It is possible to provide a method for protecting the surface of a tombstone that can be protected from the outside while maintaining a natural texture that is easy to read.
[0022]
【Example】
Hereinafter, preferred embodiments of the present invention will be described in detail.
( Reference Example 1)
First, trifunctional and bifunctional condensates obtained by hydrolysis by adding a small amount of dimethylsilane, diethylsilane and diphenyldichlorosilane to monomethylsilane, monoethylsilane and monophenyldichlorosilane with water are added with xylene. A modified silicone varnish solution with no curing accelerator added was prepared by dissolving and adding an acrylic resin to the solution.
[0023]
Next, only the meteorite 6 is taken out of the tombstones composed of the white granite and the lower stone 1, the incense burner 2, the middle stone 3, the water bowl 4, the upper stone 5 and the meteorite 6 (the tombstone construction member) shown in FIG. The entire surface including the bottom surface was washed and then dried. Subsequently, a surface protecting agent was prepared by adding 5% by weight of tetrabutyl titanate, which is a curing accelerator, to the modified silicone varnish-based solution to which the curing accelerator had not been added. The portion was applied by brushing and cured to form a surface protective film on the engraved character portion. Subsequently, the above-described surface protective agent was applied to the entire surface including the bottom surface of the meteorite 6 using a spray gun and cured to form a surface protective film.
[0024]
The meteorite 6 made of white granite coated with the surface protective film of Reference Example 1 as described above and the meteorite made of white granite without surface protection (Comparative Example 1) are each externally applied for 8 months. After the exposure, the surface condition of these meteorites was observed. As a result, the meteorite 6 of Reference Example 1 retains the original color tone of white granite, while the meteorite of Comparative Example 1 retains the fine color tone inherent to white granite due to the penetration of rainwater containing acid and dirt and surface adhesion. Was lost and became a rough spotted pattern.
[0025]
The white granite used for the meteorite did not make it difficult to read the engraving characters due to its material and color even if the engraving portion was covered with a surface protective film and given gloss.
(Example 1 )
First, tetraethylalkoxysilane and colloidal silica were dissolved and dispersed in isopropyl alcohol to prepare an alkoxysilane-based solution with no curing accelerator added.
[0026]
Next, only the meteorite 6 is taken out of the tombstones composed of the black granite shown in FIG. The entire surface including the bottom surface was washed and then dried. Subsequently, the engraved character portion of the meteorite 6 was embedded with oil clay. Subsequently, a surface protection agent was prepared by adding 5% by weight of tetrabutyl titanate as a curing accelerator to the modified silicone varnish solution without addition of a curing accelerator as in Reference Example 1 described above, and this surface protective agent was sprayed. The surface protective film was formed by applying and curing the bottom surface of the meteorite 6 and the entire surface including the engraved character portion using a gun.
[0027]
Next, after the surface protective film was sufficiently cured, the oil clay in the engraved character portion of the meteorite 6 was removed with a cutter or the like. Subsequently, 3% by weight of zirconium tetraethylalkoxide is added to the alkoxysilane-based solution to which the curing accelerator has not been added to prepare a character protective agent. The character protective agent is applied to the exposed engraved character portion with a brush and cured. As a result, a matte film was formed on the engraved character portion.
[0028]
8 months each of the meteorite 6 made of black granite coated with the surface protective film and the matte film of Example 1 and the black granite not subjected to surface protection (Comparative Example 2) for 8 months each. After being exposed to the outside world for a long time, the surface condition of these meteorites was observed. As a result, the meteorite of Example 1 retains the gloss unique to black granite, while the meteorite of Comparative Example 2 loses gloss and turns whitish.
[0029]
Further, the meteorite made of black granite of Example 1 has a natural texture that is easy to read because the engraving character portion such as a house name is protected by a matte film, and the engraving character portion does not reflect. It was.
[0030]
( Reference Example 2 )
First, including the bottom of the lower base stone 1, incense burner 2, middle base stone 3, water basin 4, upper base stone 5 and meteorite 6 (gravestone construction member) shown in FIG. The entire surface was washed and then dried. Subsequently, a surface protective agent was prepared by adding 5% by weight of tetrabutyl titanate, which is a curing accelerator, to the modified silicone varnish solution without addition of a curing accelerator, similar to Reference Example 1 described above. The engraved character portion of the tombstone building member was applied by brushing and cured to form a surface protective film on the engraved character portion. Subsequently, the above-mentioned surface protective agent was applied to the entire surface including the bottom surface of the tombstone building member using a spray gun and cured to form a surface protective film. A tombstone construction member having such a surface protection film was assembled as shown in FIG. 1 to construct a surface protection tombstone.
[0031]
The tombstone made of Komatsu stone coated with the surface protective film of Reference Example 2 as described above was exposed to the outside for one year, and then the surface state of the tombstone was observed. As a result, it was confirmed that the tombstone of Example 3 retained the original green color of Komatsuishi.
[0032]
In addition, even if the Komatsu stone used for the tombstone construction member was coated with a surface protective film on the sculpture part and given gloss, the engraving letters did not become difficult to read due to its material and color.
[0033]
(Example 2 )
First, including the bottom of the lower base stone 1, incense burner 2, middle base stone 3, water basin 4, upper base stone 5 and meteorite 6 (gravestone construction member) shown in FIG. The entire surface was washed and then dried. Then, the sculpture character part of the tombstone construction member was embedded with oil clay. Subsequently, a surface protection agent was prepared by adding 5% by weight of tetrabutyl titanate as a curing accelerator to the modified silicone varnish solution without addition of a curing accelerator as in Reference Example 1 described above, and this surface protective agent was sprayed. The surface protective film was formed by applying and curing the bottom surface of the tombstone building member and the entire surface including the engraved character portion using a gun.
[0034]
Next, after the surface protective film was sufficiently cured, the oil clay in the engraved character portion of the tombstone building member was removed with a cutter or the like. Subsequently, 3 wt% of zirconium tetraethylalkoxide was added to the same alkoxysilane-based solution with no addition of the curing accelerator as in Example 1 to prepare a character protector, and this character protector was exposed on the engraved character portion exposed. A matte film was formed on the engraved character by applying with a brush and curing. A tombstone construction member formed with such a surface protection film and a matte film was assembled as shown in FIG. 1 to construct a surface protection tombstone.
[0035]
The tombstone made of black granite coated with the surface protective film and matte film of Example 2 as described above was exposed to the outside for one year, and then the surface condition of the tombstone was observed. As a result, it was confirmed that the tombstone of Example 2 retained the gloss unique to black granite.
[0036]
( Reference Example 3 )
First, the entire surface including the bottom surfaces of the two marble plates was washed and then dried. Subsequently, a surface protective agent was prepared by adding 5% by weight of tetrabutyl titanate, which is a curing accelerator, to the modified silicone varnish solution without addition of a curing accelerator, similar to Reference Example 1 described above. The entire surface including the bottom surface of the marble plate was applied with a spray gun and cured to form a surface protective film.
[0037]
Of the two marble plates coated with the surface protective film of Reference Example 3 as described above, 9.8 accelerated weather resistance in the JIS K5400 (1990) paint general test method is applied to one of the marble plates. .1 A 200-hour accelerated weathering test was conducted with a sunshine arc lamp type, and the appearance was visually compared with a marble plate coated with the remaining surface protective film not yet tested. As a result, there was no difference in appearance between the marble board after the accelerated weathering test and the marble board which had not been tested.
[0038]
【The invention's effect】
As described above in detail, according to the present invention, it is possible to prevent contamination due to external factors such as rainwater and fallen leaves, and internal factors such as oxidation of iron contained in the tombstone itself, and to clean the tombstone surface over a long period of time. A surface protection tombstone capable of maintaining the state can be provided.
[0039]
In addition, according to the present invention, it is possible to maintain a beautiful surface state that is difficult to adhere to dirt and is not chemically eroded over a long period of time, and further, a tombstone of dark stone such as black granite However, it is possible to provide a method for protecting the surface of a tombstone that can protect the sculpture character part from the outside world while maintaining a natural texture that is easy to read.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a tombstone according to the present invention.
[Explanation of symbols]
1 ... Shimodaiishi,
2 ... Incense burner,
4 ... water bowl,
6 ... Meteorite.

Claims (1)

After embedding the sculpture character part of the tombstone with a clay-like filling, applying a surface protective agent mainly composed of a siloxane condensate and curing to form a cured film;
After removing the padding, applying a character protective agent containing alkoxysilane or a hydrolyzate thereof and colloidal silica to the exposed engraved character portion, and curing to form a matte film;
A method for protecting a surface of a tombstone, comprising:

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