A construction method for cultural heritage protection using a broad-spectrum and high-efficiency insecticide

Abstract

The present invention relates to the field of cultural relics protection technology, and discloses a construction method for cultural relics protection using a broad-spectrum and efficient killing agent, which includes the following steps: step one, pre-reinforcement: pre-reinforcement of the severely weathered, crisp and fragile areas on the surface of stone cultural relics; step two, surface cleaning: cleaning the dust on the surface of the cultural relics; step three, killing process: spraying a microbial killing agent, a moss and lichen killing agent, and a long-acting killing agent on the surface of the cultural relics to carry out microbial treatment, moss and lichen treatment and long-acting killing treatment respectively; step four, physical cleaning: cleaning the moss and lichens that wither and die on the surface of the cultural relics; step five, nano material treatment: spraying an efficient nano-scale semiconductor photocatalytic material bactericide on the surface of the cultural relics; step six, water-resistant treatment: spraying an efficient penetrating curing agent on the surface of the cultural relics; step seven: surface weathering protection: spraying a long-acting surface protection agent on the surface of the cultural relics. The present invention can achieve thorough killing and long-term protection of fungi and lichen mosses on the surface of stone cultural relics.

Description

Technical Field

[0001] The invention relates to the technical field of cultural relics protection, and in particular to a construction method for cultural relics protection using a broad-spectrum and high-efficiency killing agent. Background Art

[0002] Fungi, mosses, lichens and other lower plants often grow and reproduce on stone cultural relics. These organisms often exist in symbiotic complexes and reproduce rapidly in humid and warm places, causing obvious damage to stone cultural relics. They not only form various spots on the surface of stone cultural relics, affecting the original appearance of the cultural relics, but also because of the growth, reproduction and metabolism of the fungi, lichens and mosses symbiotic complex, the biological secretion and the decomposition of the remains under the action of microorganisms to produce organic acids such as oxalic acid, citric acid, tartaric acid, salicylic acid, etc., causing microbial acid hydrolysis and complex hydrolysis of stone cultural relics.

[0003] The cleaning methods of stone cultural relics can be divided into two categories according to the characteristics of the cleaning agent and treatment technology: cleaning with inorganic or organic solvents such as water and alcohol, and cleaning with chemical solvents. Deionized water and organic solvents such as ethanol and acetone can rinse and kill some biological diseases to a certain extent during cleaning, but it is difficult to remove most biological diseases. Even if ammonia, oxalic acid, and boric acid can kill some diseases, they are only temporary solutions and are difficult to kill serious biological diseases. Although some drugs can kill and remove, they cannot suppress biological diseases for a long time, and cannot play a role in active defense and active protection. Environmental pollution and stronger drug resistance of biological diseases may accompany them. As for the selection of protective materials, the prior art often includes mailing protective materials and inorganic protective materials. Among them, the protection of inorganic protective materials is achieved by reacting certain components with carbon dioxide or hydrating to form new substances, usually including calcium hydroxide aqueous solution, strontium hydroxide, barium hydroxide, alkaline silicate, etc. However, the shortcomings of these methods are also obvious: ① The reaction of inorganic matter and rock is easy to generate a hard shell, which destroys the natural appearance of the stone; ② There is the generation of soluble salts, and the generated salts are very easy to deposit and crystallize on the shell generated by the reaction of inorganic matter and rock, thereby causing damage to stone cultural relics and accelerating corrosion; ③ The construction process is to achieve reinforcement through chemical reaction. Once the reaction starts, the reactants will block the pore structure on the surface of the rock, thereby inhibiting the further penetration of the reinforcing agent. Organic protective materials are mainly some organic polymers, which are water-resistant, corrosion-resistant, impact-resistant, excellent in processing performance, and can be applied in various forms. They mainly include paraffin wax, silicone, acrylic polymer, epoxy resin, etc. Compared with inorganic materials, although organic materials have better adhesion, they also have many disadvantages: ① The mechanical, physical and chemical compatibility of many organic materials with the stone cultural relics to be protected is not very ideal. For example, silicone forms silica gel when used. As the solvent evaporates during the drying process, the mesh structure of silica gel shrinks strongly, and strong stress damage is generated in the three dimensions of the micropores of the stone. ② The service life is not long. For example, silicone and acrylic polymers are mostly liquid plastic materials. When applied to the surface of cultural relics in the form of a thin layer, they can form a solid film to prevent the invasion of external factors. Although the initial ideal effect was achieved at that time, due to the loss of structural water in silicone, the silicone material will shrink and fail, and the brittleness of acrylic acid also shortens its validity period. ③ When using organic materials to protect stone cultural relics, the organic material is generally dissolved in an organic solvent, and then coated or infiltrated on the surface, so that the protective material can enter the depth of the cultural relics through the pores to play a role in connection and reinforcement. If the solvent evaporates too quickly, it will cause the internal protective material to transfer back to the surface, which will not only affect the protection effect, but also change the color and glossiness of the surface of the cultural relics, making the surface color of the cultural relics darker and produce glare, affecting the appearance of the cultural relics.④ The success of organic materials in protecting stone cultural relics is closely related to the penetration mode of the protective materials used. However, most organic materials have a large molecular weight and poor permeability. ⑤ Most stone cultural relics are directly exposed outdoors, and most organic materials are sensitive to ultraviolet rays and are easily photo-aged, which further shortens the service life of the protective materials.

[0004] In summary, there is an urgent need to develop a cultural relics protection treatment method that can completely kill fungi and mosses and lichens and can achieve long-term protection and good weather resistance. Summary of the invention

[0005] The present invention aims to provide a construction method for cultural heritage protection using a broad-spectrum and highly efficient insecticide, so as to achieve complete killing and long-term protection of fungi and lichens on the surface of stone cultural relics.

[0006] To achieve the above object, the present invention adopts the following technical solution: a construction method for cultural heritage protection using a broad-spectrum and high-efficiency insecticide, comprising the following steps:

[0007] Step 1: Pre-reinforcement: Pre-reinforce the severely weathered, crumbly and fragile areas on the surface of stone cultural relics;

[0008] Step 2: Surface cleaning: clean the dust on the surface of the cultural relics;

[0009] Step 3: Killing process: Spray the microbial killer, moss and lichen killer, and long-acting killer on the surface of the cultural relics to carry out microbial treatment, moss and lichen treatment, and long-acting killing treatment respectively;

[0010] Step 4: Physical cleaning: clean the mosses and lichens that have completely withered and died on the surface of the cultural relics;

[0011] Step 5: Nanomaterial treatment: Spray high-efficiency nano-scale semiconductor photocatalytic material bactericide on the surface of cultural relics to achieve long-term killing and hydrophobic protection;

[0012] Step 6: Water-resistant treatment: spray high-efficiency penetrating curing agent on the surface of the cultural relics;

[0013] Step 7: Surface anti-weathering protection: Spray long-lasting surface sealing agent on the surface of the cultural relics.

[0014] Preferably, as an improvement, in step one, the pre-reinforcement material is tetraethyl orthosilicate.

[0015] Preferably, as an improvement, in step three, the microbiocide comprises the following raw materials in parts by weight: 80 to 100 parts of anhydrous ethanol and 2 to 8 parts of sodium hypochlorite.

[0016] Preferably, as an improvement, in step three, the moss and lichen killer is benzalkonium chloride, and the concentration of benzalkonium chloride is 0.5-5%.

[0017] Preferably, as an improvement, in step three, the long-acting killing agent is at least one of nano titanium dioxide and nano bismuth trioxide.

[0018] Preferably, as an improvement, in step three, when spraying microbial killers and moss and lichen killers, the distance from the cultural relics is 5 to 15 cm; when spraying long-acting killers, the distance from the cultural relics is 5 to 10 cm, and the spraying frequency is 1 time / d, for a total of 3 days.

[0019] Preferably, as an improvement, in step five, the high-efficiency nano-scale semiconductor photocatalytic material bactericidal agent is at least one of nano titanium dioxide, zinc oxide, cadmium sulfide, BiVO4, Bi2WO6, and Bi2MoO6.

[0020] Preferably, as an improvement, in step six, the high-efficiency penetrating curing agent includes the following raw materials in parts by weight: siloxane.

[0021] Preferably, as an improvement, in step seven, the long-acting surface sealing agent includes the following raw materials in parts by weight: perfluororesin.

[0022] Preferably, as an improvement, in step seven, when the long-acting surface sealing agent is sprayed, the distance from the cultural relics is 5 cm.

[0023] The principles and advantages of this solution are:

[0024] 1. High efficiency and reliability: Most mature killing schemes on the market use drugs to kill. Although drug killing does not necessarily cause pollution and damage to the cultural relics substrate, the pollution and damage to the environment cannot be underestimated. Its stable molecular structure is not easy to be degraded, and the dose after being consumed in the environment is difficult to continue to play a killing role. It is more likely to develop drug resistance, and it is necessary to increase the dose for repeated disinfection, which greatly increases the maintenance cost of cultural relics. Compared with most of the inefficient and short-term algae removal products sold on the market, the new material killing inhibitor of cultural relics protection in this technical solution divides the killing agent into a short-term efficient killing agent and an ultra-long-term inhibitory killing agent. It has a broad-spectrum and efficient killing ability of microorganisms and low-level plants. Through the combined use of short-term efficient killing ability and long-term inhibitory protection ability, it can effectively control the reproduction of microorganisms and low-level plants, and has a special killing effect on fungi, bacteria, algae, lichens, mosses and low-level green plants.

[0025] Most organic sealing agents in the field of cultural relics protection have problems such as short service life, lack of weather resistance, easy light aging, poor permeability, etc., while inorganic sealing agents have problems such as crusting that affects the appearance, reaction to form soluble salt deposition crystals, and difficulty in penetrating the substrate. The cultural relics protection algae removal inhibitor of this technical solution uses a new material with extremely strong aging resistance and weather resistance. After spraying on the surface of stone and earthen cultural relics, it can be quickly absorbed and penetrated to form a hydrophobic and anti-fouling interface without destroying the material structure of the cultural relics, changing its original air permeability and color, and no glare. In addition, it forms a photocatalytic environment that does not contain nutrients, can effectively inhibit the growth of mosses, lichens, molds and low green plants, prevent biological damage to cultural relics, and can play a role in moisture-proof and harmful gases in the air. After comprehensive use, the effective protection period can be as long as 3 to 5 years.

[0026] 2. Environmental friendliness: The new material killing agent for cultural relics protection in this technical solution is very different from traditional chemical disinfectants and killing agents. The active ingredients contained in the high-efficiency killing agent with a short action time are unstable in nature. After contact with light, air and organic matter, the effective ingredients will gradually decompose. After killing fungi, bacteria, algae, lichens and mosses, the redox potential drops rapidly, and it quickly decomposes and reduces to ordinary water. The discharge does not pollute the environment and is easily neutralized and reduced, so it is very easy to control. Compared with traditional chemical killing agents, it is safe, residue-free and pollution-free. Due to its short action time, it will not create a chemical environment that can induce the production of antibodies for fungi, bacteria, algae, lichens and mosses, and is not conducive to the formation of antibodies. Therefore, it can be used for a long time and is a safe, green and environmentally friendly ingredient.

[0027] The long-acting inhibitor and killer component in the new cultural heritage material inhibitor of this technical solution can continuously and efficiently kill fungi, bacteria, algae, and lichens through photocatalysis, creating an inorganic environment that is not suitable for the growth and reproduction of biological diseases, and achieving long-term protection in the true sense. In addition, this photocatalytic material is safe and non-toxic to the human body, can be used in the field of food additives, is non-irritating to the skin, and has no adverse effects on contact with the skin. It has no odor or strange smell, does not change color, decompose, volatilize, or deteriorate under long-term light exposure. It is an antibacterial agent that maintains an antibacterial effect for a long time, has good safety, does not pollute the environment, and has no secondary damage. It is an environmentally friendly bactericidal inhibitor.

[0028] 3. Easy to use: The new material killing inhibitor for cultural relics protection in this technical solution is divided into three doses of killing agents and one dose of inhibitor, all of which are used for spraying. There is no technical difficulty in use, and the protection process is simple. You only need to use a spraying tool such as a spraying pot to evenly spray the agent on the surface of the cultural relic substrate until the substrate is soaked. Among them, the three doses of killing agents need to be sprayed every day, and spraying can be done for three consecutive days. After the application of the medicine, the biological diseases will gradually wither and die a few days later. After using wooden tools or brushes to physically remove the dead diseases, the inhibitor can be used. The inhibitor also only needs to be sprayed evenly on the surface of the cultural relic substrate with a spraying tool such as a spraying pot. The new material killing inhibitor for cultural relics protection in this technical solution is easy to use and can produce a long-term protection effect on cultural relics for at least 3 to 5 years after use, inhibiting the growth and reproduction of biological diseases, and the effective period exceeds most of the killing agents on the market. The long maintenance cycle can not only greatly reduce the maintenance labor cost, but also avoid repeated killing and repeated application of medicines, avoid possible human interference, destroy the survival environment of cultural relics, and affect the stability of cultural relics. DETAILED DESCRIPTION

[0029] The following is further described in detail through specific implementations, but the implementation of the present invention is not limited thereto. Unless otherwise specified, the technical means used in the following implementations are conventional means well known to those skilled in the art; the experimental methods used are all conventional methods; the materials, reagents, etc. used can all be obtained from commercial channels.

[0030] Program Overview:

[0031] A construction method for cultural heritage protection using a broad-spectrum and high-efficiency insecticide comprises the following steps:

[0032] Step 1: Pre-reinforcement: Pre-reinforce the severely weathered, brittle and fragile areas of the stone cultural relics. The pre-reinforcement material is ethyl orthosilicate.

[0033] Step 2: Surface cleaning: Use an ear suction ball to clean the dust on the surface of the cultural relic, and then use deionized water, a brush, cotton swab, etc. to clean it carefully.

[0034] Step 3: Killing process: The killing process includes microbial treatment, moss and lichen treatment and long-term killing treatment, among which:

[0035] In the microbial treatment stage, a strategy of classifying and killing the microorganisms on the surface of the cultural relics is adopted. The microbial killer is sprayed with a spray bottle, and the nozzle of the equipment is adjusted to make the droplet size uniform. The nozzle is 5 to 15 cm away from the surface of the cultural relics. The spraying treatment lasts for three days in total to ensure that the microbial killer thoroughly infiltrates the surface of the substrate. The microbial killer used in this technical solution includes the following raw materials by mass: 80 to 100 parts of anhydrous ethanol and 2 to 8 parts of sodium hypochlorite.

[0036] During the lichen and moss treatment stage, a broad-spectrum moss and lichen killer is sprayed on the moss and lichen on the surface of the cultural relics using a spray bottle. The equipment nozzle is adjusted to make the droplet size uniform. The nozzle is 5 to 15 cm away from the surface of the cultural relics. The spraying treatment is carried out for a total of three days to ensure that the broad-spectrum moss and lichen killer thoroughly infiltrates the surface of the substrate. The broad-spectrum moss and lichen killer used in this technical solution is benzalkonium chloride, and the concentration of benzalkonium chloride is 0.5 to 5%.

[0037] Long-term killing treatment: Use special equipment to spray the long-term killing agent on the surface of the cultural relics, adjust the equipment nozzle to make the droplet size uniform, and keep the nozzle 5 to 10 cm away from the surface of the cultural relics. Spray for a total of three days to ensure that it is evenly dispersed on the surface of the cultural relics. The long-term killing agent used in this technical solution includes at least one of nano titanium dioxide and nano bismuth trioxide.

[0038] Step 4. Physical cleaning: Remove all dead mosses and lichens from the surface of cultural relics. Use a brush, wooden shovel, brush, or cotton swab to gently peel off the dead mosses and lichens and clean them one by one.

[0039] Step 5. Nanomaterial treatment: Spray high-efficiency nano-scale semiconductor photocatalytic material fungicide onto the surface of cultural relics to achieve long-term killing and hydrophobic protection. The high-efficiency nano-scale semiconductor photocatalytic material fungicide is at least one of nano titanium dioxide, zinc oxide, cadmium sulfide, BiVO4, Bi2WO6, and Bi2MoO6.

[0040] Step 6. Water-resistant treatment: Spray SJ2250 high-efficiency penetrating curing agent (siloxane) on the surface of the cultural relics. After spraying, it can be quickly absorbed and penetrate into the capillaries of the substrate to form a breathable and water-resistant membrane structure, significantly reducing the moisture absorption of porous sandstone.

[0041] Step 7: Surface anti-weathering sealing: Spray SM2000 long-lasting surface sealing agent (perfluororesin) on the surface of the cultural relics. The distance between the nozzle and the surface of the cultural relics is 5 cm. It has strong weather aging resistance. After spraying on the surface of stone and earthen cultural relics, it can form an excellent anti-fouling and hydrophobic layer on the surface of the cultural relics. It does not destroy the material structure of the cultural relics, does not change its original air permeability and color, and has no glare.

[0042] Example 1

[0043] A construction method for cultural heritage protection using a broad-spectrum and high-efficiency insecticide comprises the following steps:

[0044] Step 1: Pre-reinforcement: Pre-reinforce the severely weathered, brittle and fragile areas of the stone cultural relics. The pre-reinforcement material is ethyl orthosilicate.

[0045] Step 2: Surface cleaning: Use an ear suction ball to clean the dust on the surface of the cultural relic, and then use deionized water, a brush, cotton swab, etc. to clean it carefully.

[0046] Step 3: Killing process: The killing process includes microbial treatment, moss and lichen treatment and long-term killing treatment, among which:

[0047] In the microbial treatment stage, a strategy of classifying and killing the microorganisms on the surface of the cultural relics is adopted. The microbial killer is sprayed with a spray bottle, and the nozzle of the equipment is adjusted to make the droplet size uniform. The nozzle is 5 to 15 cm away from the surface of the cultural relics. The spraying treatment lasts for a total of three days to ensure that the microbial killer thoroughly infiltrates the surface of the substrate. The microbial killer used in this technical solution includes the following raw materials by mass: 85 parts of anhydrous ethanol and 5.5 parts of sodium hypochlorite.

[0048] During the lichen and moss treatment stage, a broad-spectrum moss and lichen killer is sprayed on the moss and lichen on the surface of the cultural relics using a spray bottle. The nozzle of the equipment is adjusted to make the droplet size uniform. The nozzle is 5 to 15 cm away from the surface of the cultural relics. The spraying treatment is carried out for a total of three days to ensure that the broad-spectrum moss and lichen killer thoroughly infiltrates the surface of the substrate. The broad-spectrum moss and lichen killer used in this technical solution is benzalkonium chloride, and the concentration of benzalkonium chloride is 1.55%.

[0049] Long-term killing treatment: Use special equipment to spray the long-term killing agent on the surface of the cultural relics, adjust the equipment nozzle to make the droplet size uniform, and keep the nozzle 5 to 10 cm away from the surface of the cultural relics. Spray for a total of three days to ensure that it is evenly dispersed on the surface of the cultural relics. The long-term killing agent used in this technical solution is nano titanium dioxide.

[0050] Step 4. Physical cleaning: Remove all dead mosses and lichens from the surface of cultural relics. Use a brush, wooden shovel, brush, or cotton swab to gently peel off the dead mosses and lichens and clean them one by one.

[0051] Step 5: Nanomaterial treatment: Spray high-efficiency nano-scale semiconductor photocatalytic material fungicide onto the surface of cultural relics to achieve long-term killing and hydrophobic protection. High-efficiency nano-scale semiconductor photocatalytic material fungicide is nano-titanium dioxide, BiVO 4 、Bi 2 MoO 6 Mixed in a mass ratio of 3:1:2.

[0052] Step 6. Water-resistant treatment: Spray SJ2250 high-efficiency penetrating curing agent (siloxane) on the surface of the cultural relics. After spraying, it can be quickly absorbed and penetrate into the capillaries of the substrate to form a breathable and water-resistant membrane structure, significantly reducing the moisture absorption of porous sandstone.

[0053] Step 7: Surface anti-weathering sealing: Spray SM2000 long-lasting surface sealing agent (perfluororesin) on the surface of the cultural relics. The distance between the nozzle and the surface of the cultural relics is 5 cm. It has strong weather aging resistance. After spraying on the surface of stone and earthen cultural relics, it can form an excellent anti-fouling and hydrophobic layer on the surface of the cultural relics. It does not destroy the material structure of the cultural relics, does not change its original air permeability and color, and has no glare.

[0054] Example 2

[0055] A construction method for cultural heritage protection using a broad-spectrum and high-efficiency insecticide comprises the following steps:

[0056] Step 1: Pre-reinforcement: Pre-reinforce the severely weathered, brittle and fragile areas of the stone cultural relics. The pre-reinforcement material is ethyl orthosilicate.

[0057] Step 2: Surface cleaning: Use an ear suction ball to clean the dust on the surface of the cultural relic, and then use deionized water, a brush, cotton swab, etc. to clean it carefully.

[0058] Step 3: Killing process: The killing process includes microbial treatment, moss and lichen treatment and long-term killing treatment, among which:

[0059] In the microbial treatment stage, a strategy of classifying and killing the microorganisms on the surface of the cultural relics is adopted. The microbial killer is sprayed with a spray bottle, and the nozzle of the equipment is adjusted to make the droplet size uniform. The nozzle is 5 to 15 cm away from the surface of the cultural relics. The spraying treatment lasts for a total of three days to ensure that the microbial killer thoroughly infiltrates the surface of the substrate. The microbial killer used in this technical solution includes the following raw materials by mass: 100 parts of anhydrous ethanol and 2 parts of sodium hypochlorite.

[0060] During the lichen and moss treatment stage, a broad-spectrum moss and lichen killer is sprayed on the moss and lichen on the surface of the cultural relics using a spray bottle. The equipment nozzle is adjusted to make the droplet size uniform. The nozzle is 5 to 15 cm away from the surface of the cultural relics. The spraying treatment is carried out for a total of three days to ensure that the broad-spectrum moss and lichen killer thoroughly infiltrates the surface of the substrate. The broad-spectrum moss and lichen killer used in this technical solution is benzalkonium chloride, and the concentration of benzalkonium chloride is 5%.

[0061] Long-term killing treatment: Use special equipment to spray the long-term killing agent on the surface of the cultural relics, adjust the equipment nozzle to make the droplet size uniform, and keep the nozzle 5 to 10 cm away from the surface of the cultural relics. Spray for a total of three days to ensure that it is evenly dispersed on the surface of the cultural relics. The long-term killing agent used in this technical solution is nano bismuth trioxide.

[0062] Step 4. Physical cleaning: Remove all dead mosses and lichens from the surface of cultural relics. Use a brush, wooden shovel, brush, or cotton swab to gently peel off the dead mosses and lichens and clean them one by one.

[0063] Step 5: Nanomaterial treatment: Spray high-efficiency nano-scale semiconductor photocatalytic material fungicide onto the surface of cultural relics to achieve long-term killing and hydrophobic protection. High-efficiency nano-scale semiconductor photocatalytic material fungicide is nano-titanium dioxide, BiVO 4 Mixed in a mass ratio of 1:1.

[0064] Step 6. Water-resistant treatment: Spray SJ2250 high-efficiency penetrating curing agent (siloxane) on the surface of the cultural relics. After spraying, it can be quickly absorbed and penetrate into the capillaries of the substrate to form a breathable and water-resistant membrane structure, significantly reducing the moisture absorption of porous sandstone.

[0065] Step 7: Surface anti-weathering sealing: Spray SM2000 long-lasting surface sealing agent (perfluororesin) on the surface of the cultural relics. The distance between the nozzle and the surface of the cultural relics is 5 cm. It has strong weather aging resistance. After spraying on the surface of stone and earthen cultural relics, it can form an excellent anti-fouling and hydrophobic layer on the surface of the cultural relics. It does not destroy the material structure of the cultural relics, does not change its original air permeability and color, and has no glare.

[0066] In order to test the protective effect of the method of this technical solution on sandstone cultural relics, eight rock samples from different origins were selected, with a size of 7×7×7cm, as shown in the following table:

[0067] Table 1

[0068] Serial number Sampling location Lithology 1 Luzhou, Sichuan Soft red sandstone 2 Luzhou, Sichuan Red Sandstone 3 Neijiang, Sichuan Coarse yellow sandstone 4 Neijiang, Sichuan Fine yellow sandstone 5 Zigong, Sichuan Purple sandstone 6 Yibin, Sichuan Fine grain white sandstone 7 Rizhao, Shandong Red sandstone with white spots 8 Shijiazhuang, Hebei Limestone

[0069] Experimental Example 1 Surface Hardness Test (HL)

[0070] Experimental method: Rockwell hardness test method

[0071] The experimental results are shown in Table 2: "Nano" means that only the sandstone is treated with nanomaterials in step five; "Nano+reinforcement" means that only the sandstone is pre-reinforced in step one and treated with nanomaterials in step five; "Nano+reinforcement+sealing" means that the sandstone is pre-reinforced in step one, treated with nanomaterials in step five, and sealed against surface weathering in step seven (the same below).

[0072] Table 2

[0073] Group As is nanometer Nano + Reinforcement Nano + reinforcement + sealing Soft red sandstone 370 393 423 433 Red Sandstone 501 503 548 523 Coarse yellow sandstone 363 367 394 382 Fine yellow sandstone 482 471 474 476 Purple sandstone 689 712 761 767 Fine grain white sandstone 633 635 650 658 Red sandstone with white spots 633 635 650 658 Limestone 639 632 643 649

[0074] Experimental Example 2 Material Moisture Content Test

[0075] Experimental method: drying and weighing method

[0076] The experimental results are shown in Table 3:

[0077] Table 3

[0078] Group As is nanometer Nano + Reinforcement Nano + reinforcement + sealing Soft red sandstone 34.6％ 28.9％ 27.2％ 27.4％ Red Sandstone 39.6％ 37.2％ 29.7％ 29.2％ Coarse yellow sandstone 39.2％ 37.2％ 29.7％ 29.2％ Fine yellow sandstone 40.2％ 37.2％ 36.4％ 32.6％ Purple sandstone 34.6％ 33.2％ 29.1％ 29.8％ Fine grain white sandstone 31.8％ 28.8％ 26.8％ 27.0％ Red sandstone with white spots 43.4％ 39.0％ 34.6％ 34.4％ Limestone 27.0％ 24.4％ 23.5％ 23.4％

[0079] Experimental Example 3 Water absorption test (water absorption in half an hour, mL) Experimental method: immersion method

[0080] The experimental results are shown in Table 4:

[0081] Table 4

[0082] Group As is nanometer Nano + Reinforcement Nano + reinforcement + sealing Soft red sandstone 1.9 1.1 0.1 0.1 Red Sandstone 6.6 2.5 0.1 0.1 Coarse yellow sandstone 16 7 0.1 0.1 Fine yellow sandstone 0.3 0.2 0.1 0.1 Purple sandstone 0.1 0 0 0 Fine grain white sandstone 0.1 0.1 0 0 Red sandstone with white spots 0.1 0 0 0 Limestone 0 0 0 0

[0083] Experimental Example 4: Changes in Color Difference Values

[0084] Experimental method: Use colorimeter to test L, a and b values.

[0085] The experimental results are shown in Table 5:

[0086] Table 5

[0087]

[0088]

[0089] Experimental Example 5 Glossiness Change (Gu)

[0090] Experimental method: gloss meter test

[0091] The experimental results are shown in Table 6:

[0092] Table 6

[0093] Group As is nanometer Nano + Reinforcement Nano + reinforcement + sealing Soft red sandstone 0.4 0.3 0.4 0.4 Red Sandstone 0.5 0.5 0.5 0.6 Coarse yellow sandstone 0.7 0.7 0.7 0.7 Fine yellow sandstone 1.1 1.0 1.0 0.9 Purple sandstone 0.6 0.6 0.7 0.6 Fine grain white sandstone 1.4 1.3 1.4 1.4 Red sandstone with white spots 0.5 0.5 0.5 0.5 Limestone 1.6 1.5 1.7 1.6

[0094] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A construction method for cultural heritage protection using a broad-spectrum and highly efficient insecticide, characterized in that: The steps include: Step 1: Pre-reinforcement: Pre-reinforce the severely weathered, crumbly and fragile areas on the surface of stone cultural relics; Step 2: Surface cleaning: clean the dust on the surface of the cultural relics; Step 3: Killing process: Spray the microbial killer, moss and lichen killer, and long-acting killer on the surface of the cultural relics to carry out microbial treatment, moss and lichen treatment, and long-acting killing treatment respectively; Step 4: Physical cleaning: clean the mosses and lichens that have completely withered and died on the surface of the cultural relics; Step 5: Nanomaterial treatment: Spray high-efficiency nano-scale semiconductor photocatalytic material bactericide on the surface of cultural relics to achieve long-term killing and hydrophobic protection; Step 6: Water-resistant treatment: spray high-efficiency penetrating curing agent on the surface of the cultural relics; Step 7: Surface anti-weathering protection: Spray long-lasting surface sealing agent on the surface of the cultural relics.

2. The construction method for cultural relics protection using a broad-spectrum and high-efficiency pesticide according to claim 1, characterized in that: In step 1, the pre-reinforcement material is tetraethyl orthosilicate.

3. A construction method for cultural heritage protection using a broad-spectrum and high-efficiency pesticide according to claim 2, characterized in that: In step three, the microbiocide comprises the following raw materials in parts by weight: 80 to 100 parts of anhydrous ethanol and 2 to 8 parts of sodium hypochlorite.

4. A construction method for cultural heritage protection using a broad-spectrum and high-efficiency pesticide according to claim 3, characterized in that: In step 3, the moss and lichen killer is benzalkonium chloride, and the concentration of benzalkonium chloride is 0.5-5%.

5. A construction method for cultural heritage protection using a broad-spectrum and high-efficiency pesticide according to claim 4, characterized in that: In step three, the long-acting killing agent includes at least one of nano titanium dioxide and nano bismuth trioxide.

6. A construction method for cultural heritage protection using a broad-spectrum and high-efficiency pesticide according to claim 5, characterized in that: In step three, when spraying microbial killers and moss and lichen killers, the distance from the cultural relics is 5 to 15 cm; when spraying long-acting killers, the distance from the cultural relics is 5 to 10 cm, and the spraying frequency is 1 time / d, for a total of 3 days.

7. A construction method for cultural heritage protection using a broad-spectrum and high-efficiency pesticide according to claim 6, characterized in that: In step five, the high-efficiency nano-scale semiconductor photocatalytic material bactericidal agent is at least one of nano titanium dioxide, zinc oxide, cadmium sulfide, BiVO4, Bi2WO6, and Bi2MoO6.

8. A construction method for cultural heritage protection using a broad-spectrum and high-efficiency pesticide according to claim 7, characterized in that: In step six, the high-efficiency penetrating curing agent is siloxane.

9. A construction method for cultural heritage protection using a broad-spectrum and high-efficiency pesticide according to claim 8, characterized in that: In step seven, the long-lasting surface sealing agent is perfluororesin.

10. A construction method for cultural heritage protection using a broad-spectrum and high-efficiency pesticide according to claim 9, characterized in that: In step seven, when spraying the long-lasting surface sealing agent, the distance from the cultural relics is 5 cm.

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