A composite filling and reinforcing agent for ancient chariot soil relics unearthed in arid environments, and its preparation method and application

Abstract

The present invention belongs to the technical field of reinforcement materials for ancient chariot earth relics unearthed in arid environments, and discloses a composite filling reinforcement agent for unearthed ancient chariot earth relics in arid environments, and its preparation method and application. The composite filling reinforcement agent includes polyvinyl acetate solution and polyvinyl butyral solution. The polyvinyl butyral used in the present invention can be used as a cross-linking agent and adhesive, and can form a tough film, which can make up for the shortcomings of polyvinyl acetate; using acetone-anhydrous ethanol as a solvent, polyvinyl acetate and polyvinyl butyral can be better brought into the cavity produced by earth relics and cultural relics, and after acetone-anhydrous ethanol volatilizes, the mixture composed of polyvinyl acetate and polyvinyl butyral can play a supporting and cross-linking role, and obtains a better reinforcement effect. The composite filling reinforcement agent of the present invention has good permeability, can be applied to the reinforcement of ancient chariot earth relics, and the color difference is also within an acceptable range.

Description

Technical Field

[0001] The invention belongs to the technical field of reinforcing materials for relics unearthed in arid environments, and in particular relates to a composite filling reinforcing agent for ancient chariot earth relics unearthed in arid environments, and a preparation method and application thereof. Background Art

[0002] Earthen sites refer to relics and artifacts made mainly of earth and left over from human activities. Due to the harsh natural environment, many earthen sites are in poor condition and in urgent need of protection.

[0003] The earthen remains of ancient chariots are more special earthen relics. They refer to wooden chariots used as burial objects in ancient tombs. Due to the nature and composition of the wood itself, it is easily attacked by fungi (molds, wood-rotting fungi), which damages the cell structure, causing the wood to degrade and the wooden structure to be destroyed. Severely decayed wood will completely lose its strength, and the original wooden structure will be slowly replaced by the surrounding fill. The chariot unearthed is the "earth chariot".

[0004] At present, the measures that can be taken to protect earthen sites include improving the environment, preventing the impact of groundwater, preventing biological damage, and chemical reinforcement of the body. Among them, chemical reinforcement of the soil is an effective measure to solve the problem that the earthen relics themselves have low strength, are not resistant to water, and are easy to collapse.

[0005] For the chemical reinforcement of soil, the materials often used by researchers in this field include: inorganic materials, organic materials, non-aqueous dispersion materials, etc.

[0006] First, a large number of inorganic materials are used. The main feature of this protective material is that the potassium ions contained in the material can be adsorbed with clay particles, and the silicate contained in it can combine the relatively dispersed clay into larger particles. The main advantages of this material are low price, anti-aging, and good windproof effect. The disadvantage is that it is not suitable for humid areas in the south. The second is organic polymer materials. The main characteristics of organic polymer materials are corrosion resistance, high strength, good flexibility, and good permeability. The main representatives of organic polymer reinforcement materials are silicone resin, polyurethane and acrylic resin. Silicone resin mainly uses water as a solid Chemical agent, with alkyl siloxane as raw material, its basic characteristics are good water resistance and good anti-aging performance. After reinforcing the earthen site, it basically does not change its original appearance. It is a good earthen site protection material; polyurethane is mainly used in coatings, bonding, etc. The hydrogen bonding between this material and the soil can further reinforce the earthen site. The main characteristics of this material are strong permeability, high strength and good water resistance; acrylic resin is often used as a binder and curing agent in the protection of earthen sites to achieve the purpose of reinforcement. The basic characteristics of this material are deep penetration and high reinforcement strength, but it is difficult to reinforce damp soil. Summary of the invention

[0007] In view of the problems existing in the prior art, the purpose of the present invention is to provide a composite filling reinforcement agent for ancient chariot soil relics unearthed in arid environments, and a preparation method and application thereof, so as to solve the problem that existing reinforcement materials are difficult to reinforce damp soil.

[0008] The present invention is achieved through the following technical solutions:

[0009] A composite filling and reinforcing agent for ancient chariot soil relics unearthed in arid environments, comprising a polyvinyl acetate solution and a polyvinyl butyral solution;

[0010] A composite filling and reinforcing agent for ancient chariot soil relics unearthed in arid environments is obtained by mixing polyvinyl acetate solution and polyvinyl butyral solution.

[0011] Preferably, the volume ratio of the polyvinyl acetate solution to the polyvinyl butyral solution is 1:1.

[0012] Preferably, the polyvinyl acetate solution is obtained by dissolving polyvinyl acetate in a mixed solvent of acetone-anhydrous ethanol;

[0013] The polyvinyl butyral solution is obtained by dissolving polyvinyl butyral in a mixed solvent of acetone-anhydrous ethanol.

[0014] Preferably, the concentration of the polyvinyl acetate solution is 1% to 5%; the concentration of the polyvinyl butyral solution is 1% to 5%.

[0015] Preferably, the concentration of the polyvinyl acetate solution is 5%; the concentration of the polyvinyl butyral solution is 5%.

[0016] Preferably, the average molecular weight of polyvinyl acetate in the polyvinyl acetate solution is 100,000.

[0017] A method for preparing a composite filling and reinforcing agent for ancient chariot soil relics unearthed in an arid environment comprises the following steps:

[0018] Polyvinyl acetate and polyvinyl butyral are respectively added into an acetone-anhydrous ethanol mixed solution, and then the two solutions are mixed to obtain a composite filling and reinforcement agent for ancient chariot earth relics unearthed in arid environments; wherein the volume ratio of acetone to anhydrous ethanol is 1:1.

[0019] The invention discloses an application of a composite filling reinforcement agent for the reinforcement of earthen ruins of ancient chariots unearthed in arid environments.

[0020] Preferably, the application of the composite filling reinforcement agent in reinforcing earthen ruins includes:

[0021] The composite filling reinforcement agent is sprayed on the surface of the earthen site cultural relics, and multiple reinforcement methods are selected according to the reinforcement effect to spray the composite filling reinforcement agent on the surface of the earthen site cultural relics.

[0022] Preferably, the reinforcement times are greater than or equal to 1 time.

[0023] Compared with the prior art, the present invention has the following beneficial technical effects:

[0024] The invention discloses a composite filling and reinforcing agent for excavating ancient chariot earth relics in arid environments. The composite filling and reinforcing agent is prepared by mixing a polyvinyl acetate solution and a polyvinyl butyral solution; the composite material composed of polyvinyl acetate and other elements used in the invention has the main characteristics of strong stability, dispersibility, permeability, etc., and is easy to form a film at low temperature and its film is easy to peel, has high toughness and mechanical strength, and has excellent properties such as water resistance, alkali resistance, and pollution-free, which is conducive to maintaining the appearance of earth relics. If the earth relics reinforced with polyvinyl acetate alone have a certain strength, the reinforcement effect is poor, the corrosion resistance is poor and it is easy to become brittle. The polyvinyl butyral (PVB) used in the invention is an important chemical raw material. The PVB molecule contains a long side chain, has good flexibility, a low glass transition temperature, and has high tensile strength and impact strength. In addition, PVB is excellent in transparency, solubility, light resistance, water resistance, heat resistance, cold resistance, and film-forming properties. Therefore, PVB has been widely used in the manufacture of laminated safety glass, adhesives, ceramic decals, aluminum foil, electrical materials, fiberglass products, fabric treatment agents and other fields, and is an indispensable synthetic resin material. The polyvinyl butyral used in the present invention can be used as a cross-linking agent and adhesive, and can form a tough film, which can make up for the shortcomings of polyvinyl acetate; the composite filling reinforcement agent of the present invention has good permeability and can be used for the reinforcement of ancient chariot soil relics. The color difference is also within an acceptable range, which effectively solves the problem that existing reinforcement materials are difficult to reinforce damp soil.

[0025] Furthermore, the present invention uses a mixed solvent of acetone-anhydrous ethanol, which not only solves the solubility problem of polyvinyl acetate and polyvinyl butyral, but also can better bring polyvinyl acetate and polyvinyl butyral into the cavity produced by the earthen relics, thereby enhancing the permeability of the reinforcing agent. After the acetone-anhydrous ethanol evaporates, the mixture of polyvinyl acetate and polyvinyl butyral can play a supporting and cross-linking role, thereby obtaining a better reinforcement effect. In addition, acetone and ethanol are both solvents with low boiling points and are easy to volatilize, thus providing the possibility for the rescue protection of the earthen relics, and the color difference is also within an acceptable range. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below.

[0027] Figure 1 Schematic diagram of the penetration depth test material of the composite filling and reinforcing agent of Example 3;

[0028] Figure 2 Schematic diagram of the penetration depth experiment process of the composite filling and reinforcing agent of Example 3;

[0029] Figure 3 It is a schematic diagram of the penetration depth test results of the composite filling and reinforcing agent of Example 3;

[0030] Figure 4 Schematic diagram of the waterproof test material of the composite filling reinforcement agent of Examples 1 to 3;

[0031] Figure 5 It is a schematic diagram of the waterproof test process of the composite filling and reinforcing agent of Examples 1 to 3;

[0032] Figure 6 The schematic diagram of the waterproof test results of the composite filling reinforcement agent of Examples 1 to 3; Figure (a) shows the state result just after dripping, and Figure (b) shows the state result half an hour after dripping.

[0033] Figure 7 This is a graph showing the average maximum force test results of the adobe simulation sample before and after reinforcement in Example 3;

[0034] Figure 8 This is a graph showing the average tensile strength test results of the adobe simulation sample in Example 3 before and after reinforcement. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with specific embodiments, which are intended to explain the present invention rather than to limit it.

[0036] The present invention provides a composite filling and reinforcing agent for excavating ancient chariot soil remains in arid environments, comprising a polyvinyl acetate solution and a polyvinyl butyral solution;

[0037] The volume ratio of the polyvinyl acetate solution to the polyvinyl butyral solution is preferably 1:1.

[0038] In the present invention, the polyvinyl acetate solution is preferably obtained by dissolving polyvinyl acetate in a mixed solvent of acetone-anhydrous ethanol;

[0039] The polyvinyl butyral solution is preferably obtained by dissolving polyvinyl butyral in an acetone-anhydrous ethanol mixed solvent.

[0040] In the present invention, the concentration of the polyvinyl acetate solution is preferably 1% to 5%, more preferably 1%, 2%, 3%, 4% or 5%, and more preferably 5%;

[0041] The concentration of the polyvinyl butyral solution is preferably 1% to 5%, more preferably 1%, 2%, 3%, 4% or 5%, and more preferably 5%.

[0042] In the present invention, the polyvinyl acetate in the polyvinyl acetate solution preferably has an average molecular weight of 100,000.

[0043] The present invention also provides a method for preparing a composite filling and reinforcing agent for ancient chariot soil relics unearthed in an arid environment, comprising the following steps:

[0044] Polyvinyl acetate solution and polyvinyl butyral solution are prepared separately and then mixed to obtain a composite filling and reinforcing agent for ancient chariot soil relics unearthed in arid environments.

[0045] The present invention also provides an application of a composite filling reinforcing agent for reinforcing earthen relics and cultural relics unearthed from ancient chariot earthen relics in arid environments.

[0046] In the present invention, the method for reinforcing earthen relics and cultural relics comprises the following steps:

[0047] Spraying the composite filling reinforcement agent on the surface of the earthen relics and cultural relics;

[0048] Or carry out multiple reinforcements after the first reinforcement.

[0049] In the present invention, the number of times the reinforced earthen relics are reinforced is preferably greater than or equal to 1 time, more preferably 3 to 10 times, and more preferably 5 times.

[0050] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] Example 1

[0052] The present embodiment provides a composite filling and reinforcing agent for ancient chariot earth relics unearthed in an arid environment, comprising a 1% polyvinyl acetate solution (polyvinyl acetate is dissolved in an acetone-anhydrous ethanol mixed solution) and a 1% polyvinyl butyral solution (polyvinyl butyral is dissolved in an acetone-anhydrous ethanol mixed solution), wherein the volume ratio of the polyvinyl acetate solution to the polyvinyl butyral solution is 1:1, and the ratio of acetone to anhydrous ethanol is 1:1.

[0053] The preparation method of the composite filling reinforcing agent comprises the following steps:

[0054] The polyvinyl acetate solution and the polyvinyl butyral solution are prepared separately and then mixed evenly to obtain a composite filling and reinforcing agent.

[0055] Example 2

[0056] The present embodiment provides a composite filling and reinforcing agent for ancient chariot earth relics unearthed in an arid environment, comprising a 3% polyvinyl acetate solution (polyvinyl acetate is dissolved in an acetone-anhydrous ethanol mixed solution) and a 3% polyvinyl butyral solution (polyvinyl butyral is dissolved in an acetone-anhydrous ethanol mixed solution), wherein the volume ratio of the polyvinyl acetate solution to the polyvinyl butyral solution is 1:1.

[0057] The preparation method of the composite filling reinforcing agent comprises the following steps:

[0058] The polyvinyl acetate solution and the polyvinyl butyral solution are prepared separately and then mixed evenly to obtain a composite filling and reinforcing agent.

[0059] Example 3

[0060] The present embodiment provides a composite filling and reinforcing agent for ancient chariot earth relics unearthed in an arid environment, comprising a 5% polyvinyl acetate solution (polyvinyl acetate is dissolved in an acetone-anhydrous ethanol mixed solution) and a 5% polyvinyl butyral solution (polyvinyl butyral is dissolved in an acetone-anhydrous ethanol mixed solution), wherein the volume ratio of the polyvinyl acetate solution to the polyvinyl butyral solution is 1:1.

[0061] The preparation method of the composite filling reinforcing agent comprises the following steps:

[0062] The polyvinyl acetate solution and the polyvinyl butyral solution are prepared separately and then mixed evenly to obtain a composite filling and reinforcing agent.

[0063] Example 4

[0064] The present embodiment provides a composite filling and reinforcing agent for ancient chariot earth relics unearthed in an arid environment, comprising a 2% polyvinyl acetate solution (polyvinyl acetate is dissolved in an acetone-anhydrous ethanol mixed solution) and a 2% polyvinyl butyral solution (polyvinyl butyral is dissolved in an acetone-anhydrous ethanol mixed solution), wherein the volume ratio of the polyvinyl acetate solution to the polyvinyl butyral solution is 1:1, and the ratio of acetone to anhydrous ethanol is 1:1.

[0065] The preparation method of the composite filling reinforcing agent comprises the following steps:

[0066] Prepare polyvinyl acetate solution and polyvinyl butyral solution respectively and mix them evenly to obtain a composite filling reinforcement agent, spray the composite filling reinforcement agent on the surface of earthen relics and cultural relics, and reinforce them 10 times;

[0067] Example 5

[0068] The present embodiment provides a composite filling and reinforcing agent for ancient chariot earth relics unearthed in an arid environment, comprising a 2% polyvinyl acetate solution (polyvinyl acetate is dissolved in an acetone-anhydrous ethanol mixed solution) and a 2% polyvinyl butyral solution (polyvinyl butyral is dissolved in an acetone-anhydrous ethanol mixed solution), wherein the volume ratio of the polyvinyl acetate solution to the polyvinyl butyral solution is 1:1, and the ratio of acetone to anhydrous ethanol is 1:1.

[0069] The preparation method of the composite filling reinforcing agent comprises the following steps:

[0070] Prepare polyvinyl acetate solution and polyvinyl butyral solution respectively and mix them evenly to obtain a composite filling reinforcement agent, spray the composite filling reinforcement agent on the surface of earthen relics and cultural relics for 3 times;

[0071] Example 6

[0072] The present embodiment provides a composite filling and reinforcing agent for ancient chariot earth relics unearthed in an arid environment, comprising a 4% polyvinyl acetate solution (polyvinyl acetate is dissolved in an acetone-anhydrous ethanol mixed solution) and a 4% polyvinyl butyral solution (polyvinyl butyral is dissolved in an acetone-anhydrous ethanol mixed solution), wherein the volume ratio of the polyvinyl acetate solution to the polyvinyl butyral solution is 1:1.

[0073] The preparation method of the composite filling reinforcing agent comprises the following steps:

[0074] Prepare polyvinyl acetate solution and polyvinyl butyral solution respectively and mix them evenly to obtain a composite filling reinforcement agent. Spray the composite filling reinforcement agent on the surface of the earthen relics and cultural relics for 5 times;

[0075] Performance Test:

[0076] Permeability test: A cylindrical adobe simulation sample with a radius of 24.20 mm and a height of 23.20 mm was prepared and placed in the composite filling reinforcement agent with a depth of 5 mm of Examples 1 to 3. In order to make the experimental effect more obvious, carmine was added to the transparent reinforcement liquid to make the reinforcement liquid darker in color, and the time required for penetration to the top of the adobe sample was observed. The experimental process is as follows: Figures 1 to 3The experimental results show that the penetration time of the adobe sample in the composite filling reinforcement agent of Example 1 is about 4.1 minutes, the penetration time of the adobe sample in the composite filling reinforcement agent of Example 2 is about 4.5 minutes, and the penetration time of the adobe sample in the composite filling reinforcement agent of Example 3 is about 5.8 minutes, and the penetration depth is about 2.3 cm.

[0077] Color difference analysis: Place the adobe sample on a colorimeter and record its initial value; then apply the composite filling and reinforcing agent prepared in Examples 1 to 3 on the sample surface, place it at room temperature, dry it in the shade, measure its value again, and calculate the color difference; repeat the application of the composite filling and reinforcing agent and measure it again; the results of the statistical color difference values ​​are shown in Tables 1 to 3.

[0078] Table 1 Statistical results of color difference of the composite filling and reinforcing agent of coating Example 1

[0079]

[0080] Table 2 Statistical results of color difference of the composite filling and reinforcing agent of coating Example 2

[0081]

[0082] Table 3 Color difference statistics of the composite filling and reinforcing agent of coating Example 3

[0083]

[0084] It can be seen from Tables 1 to 3 that the average color difference of the composite filling reinforcement agent of Example 1 is 0.79, the average color difference of the composite filling reinforcement agent of Example 2 is 0.78, and the average color difference of the composite filling reinforcement agent of Example 3 is 1.04. The color change of the adobe samples after reinforcement is slight (the corresponding relationship between △E value and color change is shown in Table 4).

[0085] Table 4 Correspondence between △E value and color change

[0086]

[0087] Waterproofness: The composite reinforcement agents of Examples 1 to 3 were dripped onto the filter paper and dried in the shade at room temperature; then pure water was dripped onto the surface of the filter paper to observe its permeability. The results are as follows: pure water was dripped onto the surface of the filter paper of three concentrations of Examples 1 to 3, and the pure water could not penetrate. After half an hour, one drop of water in Example 1 disappeared, and the rest remained in the form of water drops. Examples 2 and 3 remained in the form of water drops, which contained the optimal concentration. The experimental process is as follows: Figures 4 to 6 shown.

[0088] Adobe simulation sample reinforcement: The composite filling reinforcement agent of Example 3 was used to reinforce the adobe simulation sample. The specific experimental content was: prepare adobe simulation samples with the same specifications, add the composite filling reinforcement agent drop by drop to the surface of the adobe sample with a dropper, and conduct three parallel experiments. Each sample was reinforced only once, and its compressive strength was measured after reinforcement. The test results before and after reinforcement are as follows: Figure 7-Figure 8 As shown. Figure 7-Figure 8 It can be seen from the experimental data that the average maximum force that the adobe simulation sample can withstand before reinforcement is 78.339N, and the maximum average tensile strength is 0.03992MPa. The sample will turn into powder later; the pressure that the adobe simulation sample can withstand after reinforcement can reach 304.524N, and the maximum average tensile strength is 0.15517MPa, which illustrates the effectiveness of the composite filling reinforcement agent.

[0089] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A composite filling and reinforcing agent for ancient chariot soil relics unearthed in arid environments, characterized in that include, Polyvinyl acetate solution and polyvinyl butyral solution; A composite filling and reinforcing agent for ancient chariot soil relics unearthed in arid environments is obtained by mixing polyvinyl acetate solution and polyvinyl butyral solution.

2. The composite filling and reinforcing agent for ancient chariot soil remains unearthed in arid environments according to claim 1, characterized in that: The volume ratio of the polyvinyl acetate solution to the polyvinyl butyral solution is 1:

1.

3. The composite filling and reinforcing agent for ancient chariot soil remains unearthed in arid environments according to claim 1, characterized in that: The polyvinyl acetate solution is obtained by dissolving polyvinyl acetate in a mixed solvent of acetone-anhydrous ethanol; The polyvinyl butyral solution is obtained by dissolving polyvinyl butyral in a mixed solvent of acetone-anhydrous ethanol.

4. The composite filling and reinforcing agent for ancient chariot soil remains unearthed in arid environments according to claim 3, characterized in that: The concentration of the polyvinyl acetate solution is 1% to 5%; the concentration of the polyvinyl butyral solution is 1% to 5%.

5. The composite filling and reinforcing agent for ancient chariot soil remains unearthed in arid environments according to claim 3, characterized in that: The concentration of the polyvinyl acetate solution is 5%; the concentration of the polyvinyl butyral solution is 5%.

6. The composite filling and reinforcing agent for ancient chariot soil remains unearthed in arid environments according to claim 1, characterized in that: The average molecular weight of the polyvinyl acetate in the polyvinyl acetate solution is 100,000.

7. A method for preparing a composite filling and reinforcing agent for ancient chariot soil relics unearthed in arid environments as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: Polyvinyl acetate and polyvinyl butyral are respectively added into an acetone-anhydrous ethanol mixed solution and then the two solutions are mixed to obtain a composite filling and reinforcement agent for ancient chariot soil remains unearthed in arid environments; wherein the volume ratio of acetone to anhydrous ethanol is 1:

1.

8. Use of the composite filling and reinforcing agent for the ancient chariot earthen remains unearthed in arid environments as claimed in any one of claims 1 to 6 in the reinforcement of earthen ruins.

9. The use of a composite filling and reinforcing agent for reinforcing earthen ruins unearthed from ancient chariots in arid environments according to claim 8, characterized in that: The application of the composite filling reinforcement agent in reinforcing earthen ruins includes: The composite filling reinforcement agent is sprayed on the surface of the earthen site cultural relics, and multiple reinforcement methods are selected according to the reinforcement effect to spray the composite filling reinforcement agent on the surface of the earthen site cultural relics.

10. The use of a composite filling and reinforcing agent for reinforcing earthen relics of ancient chariots unearthed in arid environments according to claim 9, characterized in that: The reinforcement times are greater than or equal to 1 time.

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