A dual-light path montmorillonite interlayer spacing control device and method

Abstract

The present disclosure provides a dual-path montmorillonite interlayer spacing control device and method. The present disclosure provides a device for controlling the interlayer spacing of montmorillonite by combining infrared continuous laser and infrared pulse laser. The experimental device includes an infrared nanosecond continuous laser and an infrared nanosecond pulse laser. The infrared nanosecond continuous laser is used to output continuous laser and provide stable radiation energy. The infrared nanosecond pulse laser is used to output high-energy pulse laser to achieve larger interlayer spacing control. The present invention uses a combination of continuous and pulse lasers to form a composite laser, utilizes photothermal effect and nonlinear optical effect, and combines operations to achieve interlayer spacing control of montmorillonite in a relatively large range, and can also achieve more accurate interlayer spacing adjustment in a local area.

Description

Technical Field

[0001] The present disclosure relates to the field of laser-matter interaction, and in particular to a dual-light-path montmorillonite interlayer spacing control device and method. Background Art

[0002] Montmorillonite is a layered mineral whose structure consists of silicate layers with larger interlayer distances and water molecules with smaller interlayer distances. Increasing or decreasing the interlayer distances will have different effects.

[0003] The increase in interlayer spacing has an important impact on the performance of montmorillonite. On the one hand, increasing the interlayer spacing allows more substances to enter the interlayer gap, improves the adsorption performance of montmorillonite, and makes montmorillonite more efficient in removing pollutants and adsorbing gas molecules; on the other hand, increasing the interlayer spacing can enhance the ion exchange capacity of montmorillonite, enabling it to better adsorb and release ions in solution. The reduction in interlayer spacing also has an important impact on the performance of montmorillonite. First, reducing the interlayer spacing can allow montmorillonite to form pores and channels of specific sizes, making it a molecular sieve material. Secondly, reducing the interlayer spacing can also provide microscopic space for storing and releasing drug molecules, for controlling the release of drugs, prolonging the drug's action time and enhancing the efficacy.

[0004] At present, commonly used methods to change the interlayer spacing of montmorillonite include acid washing and organic modification. Acid washing affects the stability of montmorillonite, and organic modification involves complex synthesis processes and stability issues of organic matter. The above methods either have complicated operating procedures or produce additional chemical reactions, affecting other properties of montmorillonite. Therefore, it is an urgent problem to propose a method for regulating the interlayer spacing of montmorillonite that is simple to operate and does not require additional chemical reactions. Summary of the invention

[0005] In view of the above technical problems, the present disclosure provides a dual-light path montmorillonite interlayer spacing control device and method to solve or at least alleviate at least one technical problem existing in the above method for controlling the montmorillonite interlayer spacing.

[0006] According to a specific embodiment of the present disclosure, in a first aspect, the present disclosure provides a dual-light path montmorillonite interlayer spacing control device and method, comprising:

[0007] The infrared pulse optical path comprises: an infrared pulse light source, a first spectroscope and a first detector, wherein the infrared pulse light source is used to emit an infrared pulse laser, the infrared pulse laser is divided into a first infrared pulse laser beam and a second infrared pulse laser beam by the first spectroscope, the first infrared pulse laser beam is transmitted to the first detector, the first detector is used to detect laser parameters of the infrared pulse laser beam; the second infrared pulse laser beam is used to adjust the interlayer spacing of the montmorillonite;

[0008] An infrared continuous optical path, comprising: an infrared continuous light source, a second beam splitter and a second detector, wherein the infrared continuous light source is used to emit an infrared continuous laser, the infrared continuous laser is divided into a third infrared continuous laser beam and a fourth infrared continuous laser beam by the second beam splitter, the third infrared continuous laser beam is transmitted to the second detector, the second detector is used to detect laser parameters of the infrared continuous laser beam; the fourth infrared continuous laser beam is used to adjust the interlayer spacing of the montmorillonite;

[0009] The scanning optical path includes: a focusing mirror, a scanning mirror and montmorillonite, wherein the focusing mirror receives the second infrared pulse laser and the fourth infrared continuous laser and focuses them on the scanning mirror, and the scanning mirror is controlled to move along a preset trajectory to adjust the interlayer spacing of the montmorillonite.

[0010] In some embodiments, the beam splitter is at 45° to the optical path of the second infrared pulsed laser beam; and / or, the beam splitter is at 45° to the optical path of the fourth infrared continuous laser beam.

[0011] In some embodiments, the infrared pulse optical path has the same structure as the infrared continuous optical path, the infrared laser is transmitted to the reflector via a beam splitter, and the reflector is parallel to the beam splitter and is used to adjust the infrared laser to be perpendicular to the central axis of the focusing mirror.

[0012] In some embodiments, the second infrared pulse laser and the fourth infrared continuous laser form a composite laser perpendicular to the same optical axis of the focusing mirror, and the composite laser is focused on the scanning mirror. The scanning mirror is controlled to scan along a preset moving trajectory to adjust the montmorillonite layer spacing.

[0013] In some embodiments, the central wavelength of the infrared pulse laser is 1030-1090 nm; and / or the central wavelength of the infrared continuous laser is 1030-1090 nm.

[0014] In some embodiments, the output power of the infrared continuous laser is 5-8W; and / or the output power of the infrared pulse laser is 10-28W.

[0015] In some embodiments, the pulse width of the infrared pulse laser is 10-15 ns. Within this pulse width range, the effect of regulating the interlayer spacing of montmorillonite can be achieved without damaging the structure of montmorillonite.

[0016] In some embodiments, the montmorillonite interlayer spacing is adjusted in the range of 14.10Å-9.54Å.

[0017] In some embodiments, the scanning optical path further includes a third reflector, which is located above the scanning galvanometer mirror and is used to adjust the composite laser to be perpendicular to the central axis of the scanning galvanometer mirror.

[0018] In some embodiments, the preset movement trajectory of the scanning galvanometer is at least one of the following:

[0019] Straight line, snake shape, U shape or Z shape.

[0020] In some embodiments, it also includes: an X-ray diffractometer for measuring the interlayer spacing of the montmorillonite and feeding back the measurement results to the infrared pulse light source and the infrared continuous light source, and the infrared pulse light source and the infrared continuous light source adjust their output laser parameters according to the measurement results.

[0021] In some embodiments, the parameters of the laser are such that its total energy inside the montmorillonite satisfies the following relationship:

[0022] in, in, is the energy input source term, Indicates light intensity, A is the absorption ratio, α is the absorption coefficient, z is the depth of laser transmission into the material. n is the refractive index of montmorillonite, k is the extinction coefficient, λ is the wavelength of the incident laser. The interlayer spacing of montmorillonite satisfies the following relationship: in, is the interlayer distance, N is the number of atoms in each layer, For the i The z coordinates of atoms in the second layer are For the i The z coordinate of the atoms in the first layer.

[0023] In some embodiments, a method for regulating the interlayer spacing of montmorillonite is also included:

[0024] S1: The infrared pulse light source emits an infrared pulse laser, which is divided into a first beam of infrared pulse laser and a second beam of infrared pulse laser by the first beam splitter, and the first beam of infrared pulse laser is transmitted to the first detector, which is used to detect laser parameters of the infrared pulse laser; the second beam of infrared pulse laser is used to adjust the interlayer spacing of the montmorillonite, and the infrared pulse laser uses its nonlinear effect to control the interlayer spacing of the montmorillonite;

[0025] S2: the infrared continuous light source emits an infrared continuous laser, the infrared continuous laser is divided into a third infrared continuous laser beam and a fourth infrared continuous laser beam by the second beam splitter, the third infrared continuous laser beam is transmitted to the second detector, the second detector is used to detect the laser parameters of the infrared continuous laser beam; the fourth infrared continuous laser beam is used to adjust the interlayer spacing of the montmorillonite (14), and the infrared continuous laser uses its thermal effect to adjust the interlayer spacing of the montmorillonite;

[0026] S3: the focusing mirror receives the second infrared pulse laser beam and the fourth infrared continuous laser beam and focuses them on the scanning mirror, and the scanning mirror is controlled to move along a preset trajectory to adjust the interlayer spacing of the montmorillonite;

[0027] S4: The interlayer spacing of the montmorillonite is measured by an X-ray diffractometer, and the measurement results are fed back to the infrared pulse light source and the infrared continuous light source. The infrared pulse light source and the infrared continuous light source adjust their output laser parameters according to the measurement results until the end of the experiment.

[0028] Compared with the prior art, the above solution of the embodiment of the present disclosure has at least the following beneficial effects:

[0029] The interlayer spacing of montmorillonite is adjusted by a combination of continuous and pulsed lasers. The continuous laser is used to induce thermal expansion effect, thereby achieving interlayer spacing adjustment in a relatively large range. The nonlinear effect of pulsed light is used to achieve more precise adjustment and micro-scale control. Pulsed light can provide higher spatial resolution and faster response speed, enabling more precise interlayer spacing adjustment in local areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present disclosure, and together with the specification, are used to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 is the d of the montmorillonite of the present invention 001 The change diagram of characteristic peak 2θ;

[0033] Figure 3 This is a microscopic morphology of the interlayer spacing of montmorillonite regulated by laser in the present invention;

[0034] Figure 4This is a microscopic morphology of the interlayer spacing of montmorillonite without laser control in the present invention.

[0035] In the accompanying drawings: 1-infrared nanosecond pulse laser, 2-infrared nanosecond continuous laser, 3-first spectroscope, 4-first probe, 5-first detector, 6-first reflector, 7-second spectroscope, 8-second probe, 9-second detector, 10-second reflector, 11-focusing mirror, 12-third reflector, 13-scanning galvanometer, 14-montmorillonite, 15-X-ray diffractometer. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0037] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms of "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings, and "multiple" generally includes at least two, and other quantifiers are similar thereto.

[0038] It should be understood that, although the terms first, second, third, etc. may be used to describe in the embodiments of the present application, these descriptions should not be limited to these terms. These terms are only used to distinguish the described objects. For example, without departing from the scope of the embodiments of the present application, the first may also be referred to as the second, and similarly, the second may also be referred to as the first. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting relative importance.

[0039] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include the plural forms, unless the context clearly indicates other meanings.

[0040] It should also be noted that the term "includes", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the commodity or device including the elements.

[0041] like Figure 1 As shown, the embodiment of the present application provides a dual-light path montmorillonite interlayer spacing control device, comprising:

[0042] The infrared pulse optical path includes: an infrared pulse light source 1, which is used to output an infrared pulse laser with a pulse width of 10-15ns, for example, the output power of the infrared pulse laser provided by the infrared nanosecond pulse laser is 10-28W, so as to adjust the interlayer spacing of montmorillonite 14 as needed; a first beam splitter 3, which is used to divide the infrared pulse laser into a first infrared laser beam and a second infrared laser beam; a first probe 4, which is used to receive the first infrared pulse laser beam and transmit it to the first detector 5; the first detector 5 is used to detect the laser parameters of the infrared pulse laser; a first reflector 6, which is used to adjust the second infrared pulse laser beam to be perpendicular to the focusing mirror 11, and the second infrared pulse laser beam is used to adjust the interlayer spacing of montmorillonite. The infrared pulse laser irradiates the montmorillonite, and the nonlinear effect of the infrared pulse laser acting on the montmorillonite is used to achieve a more precise spacing adjustment of the montmorillonite within a microscopic scale. At the same time, the infrared pulse laser can improve the spatial resolution and response speed of the montmorillonite, so that the montmorillonite can achieve more accurate interlayer spacing control in a local area.

[0043] The infrared continuous optical path includes: an infrared continuous light source 2, which is used to output an infrared continuous laser with a central wavelength of 1030-1090nm and control the output power of the infrared continuous laser to adjust the interlayer spacing of montmorillonite 14 as needed; a second beam splitter 7, which is used to split the infrared continuous laser into a third continuous laser and a fourth infrared continuous laser; a second probe 8, which is used to receive the third infrared continuous laser and transmit it to a second detector 9; the second detector 9 is used for the laser parameters of the infrared continuous laser; a second reflector 10, which is used to adjust the third infrared continuous laser to be perpendicular to the focusing mirror 11; and the fourth infrared continuous laser is used to adjust the interlayer spacing of montmorillonite. The infrared continuous laser irradiates the montmorillonite and utilizes the thermal expansion effect of the infrared continuous laser in the montmorillonite to achieve the adjustment of the interlayer spacing of the montmorillonite in a relatively large range, so that the montmorillonite can be quickly adjusted to the expected spacing range, thereby improving the adjustment efficiency.

[0044] The scanning optical path includes: a focusing mirror 11, which is used to receive the second infrared pulse laser and the fourth infrared continuous laser, and focus the two laser beams; a scanning mirror 13, which is used to be controlled to move along a preset trajectory to adjust the interlayer spacing of the montmorillonite 14, and control the parameters of the laser so that its total energy inside the montmorillonite satisfies the following relationship: wherein, in, is the energy input source term, Indicates light intensity, A is the absorption ratio, α is the absorption coefficient, z is the depth of laser transmission into the material. n is the refractive index of montmorillonite, k is the extinction coefficient, λ is the wavelength of the incident laser.

[0045] The interlayer spacing of montmorillonite satisfies the following relationship: in, is the interlayer distance, N is the number of atoms in each layer, For the i The z coordinates of atoms in the second layer are For the i The z coordinate of the atoms in the first layer. By controlling the energy of the incident laser, the interlayer spacing of montmorillonite can be effectively regulated. In some embodiments, the output energy of the infrared continuous laser is 5-8W, for example, 6W, 6.5W, 7W, etc., and the output energy of the infrared pulse laser is 10-28W, for example, 12W, 16W, 22W, etc. As the output energy of the infrared continuous laser and the infrared pulse laser is large, the interlayer spacing of montmorillonite decreases. However, when the output energy is small, for example, when the average output energy of the infrared pulse laser is less than 10W and the output energy of the infrared continuous laser is less than 5W, the effect on the interlayer spacing of montmorillonite is small, which is not enough to achieve the modification of the interlayer spacing of montmorillonite; when the output energy is too large, for example, when the average output energy of the infrared pulse laser is greater than 28W and the average output energy of the infrared continuous laser is greater than 8W, the structure of montmorillonite will be damaged. The infrared pulse laser and infrared continuous laser in the above output energy range act on montmorillonite, which can stably regulate the structure of montmorillonite without damaging the structure of montmorillonite, thereby stably achieving the regulation of the interlayer spacing of montmorillonite.

[0046] The present application simultaneously regulates the interlayer spacing of montmorillonite through an infrared pulse laser and an infrared continuous laser dual optical path system. The dual optical paths cooperate with each other to quickly adjust the interlayer spacing of montmorillonite, improve the adjustment efficiency and accuracy of the interlayer spacing of montmorillonite, and reduce the demand for laser power. On the one hand, the infrared continuous laser irradiates montmorillonite, and utilizes the thermal expansion effect of the infrared continuous laser in montmorillonite to achieve the adjustment of the interlayer spacing of montmorillonite in a relatively large range, so that montmorillonite can be quickly adjusted to the expected spacing range, improving the adjustment efficiency. On the other hand, the infrared pulse laser irradiates montmorillonite, and utilizes the nonlinear effect of the infrared pulse laser acting on montmorillonite to achieve a more refined spacing adjustment of montmorillonite within a microscopic scale. At the same time, the infrared pulse laser can improve the spatial resolution and faster response speed of montmorillonite, so that montmorillonite can achieve more accurate interlayer spacing regulation in a local area. In addition, compared with the control method of a single laser, the present application significantly reduces the power requirement for a single laser by combining an infrared pulse laser and an infrared continuous laser dual optical path system to simultaneously control the interlayer spacing of montmorillonite. In particular, the power requirement for infrared continuous lasers is only a few W, and for infrared pulse lasers it does not exceed 30 W. That is, the interlayer spacing can be controlled by relatively low power input, reducing energy loss and the need for high-power lasers.

[0047] The present application can measure the interlayer spacing of the montmorillonite 14 through monitoring equipment such as an X-ray diffractometer 15 and a microscope, and feed back the measurement results to the infrared pulse light source 1 and the infrared continuous light source 2. The infrared pulse light source 1 and the infrared continuous light source 2 adjust their output laser parameters according to the measurement results, including adjusting the power, pulse width, etc. of the infrared pulse light source 1 and the infrared continuous light source 2, thereby adjusting the size of the interlayer spacing of the montmorillonite 14 to meet application requirements.

[0048] On the one hand, the interlayer spacing of montmorillonite 14 can be increased by adjusting the laser parameters of the infrared pulse light source 1 and / or the infrared continuous light source 2 (for example, reducing the laser power). Increasing the interlayer spacing can improve the adsorption performance of montmorillonite, because more substances can enter the interlayer gap, thereby increasing the available adsorption surface area. This makes montmorillonite more efficient in removing pollutants, adsorbing gas molecules, etc.; increasing the interlayer spacing may also enhance the ion exchange capacity of montmorillonite, enabling it to better adsorb and release ions in solution. This is of great significance for some ion exchange applications, such as water treatment and ion exchange chromatography.

[0049] On the other hand, the interlayer spacing of montmorillonite 14 can be reduced by adjusting the laser parameters of the infrared pulse light source 1 and / or the infrared continuous light source 2 (for example, increasing the laser power). Reducing the interlayer spacing can form pores and channels of specific sizes, making it a molecular sieve material. Molecular sieves can selectively adsorb and separate substances according to the size and shape of molecules, for example, in the field of petrochemicals for separating and purifying chemicals. The reduction in the interlayer spacing of montmorillonite can also provide microscopic space for storing and releasing drug molecules, for controlling the release of drugs, prolonging the duration of action of drugs and enhancing the efficacy.

[0050] In this embodiment, Figure 1 As shown in the figure, after the infrared pulse laser and the infrared continuous laser form a dual light path to scan the montmorillonite or while scanning, an X-ray diffractometer is used to test the interlayer spacing change of the montmorillonite after the dual light path. Specifically, to measure the montmorillonite d after the dual light path laser scanning 001 To investigate the change of the characteristic peak 2θ, first prepare the montmorillonite sample before and after the infrared laser. Then, adjust the parameters of the X-ray diffractometer, including the incident angle, scanning speed, and range. Place the montmorillonite sample on the sample stage and position it accurately. Start the X-ray diffractometer, emit an X-ray beam to irradiate the sample, and record the diffraction data. Analyze the obtained diffraction data, focusing on the d 001 Characteristic peak. Determine the position of the characteristic peak (2θ value) by calculation or fitting method. Compare the data before and after infrared laser scanning to observe the change of 2θ value.

[0051] In the device for regulating the interlayer spacing of montmorillonite in the present application, the scanning galvanometer is moved to control the motion trajectory of the scanning galvanometer, and the scanning is roughly carried out along the texture direction of the montmorillonite. For example, the preset moving trajectory is preferably but not limited to a straight line, a snake shape, a back shape or a Z-shaped movement. A larger montmorillonite processing area can be covered in a shorter time, and the processing speed can be greatly improved. It only takes about 30 minutes to complete the scanning of the entire area of ​​montmorillonite, thereby improving production efficiency and solving the technical problems of long single-point processing time, slow speed and low efficiency. Through mobile scanning, montmorillonite can be processed uniformly, so that the interlayer spacing of montmorillonite is uniform, and the technical problem of uneven local processing or over-processing of montmorillonite caused by existing single-point processing is solved.

[0052] See also Figure 2 , is the d of the original montmorillonite 001 The characteristic peak 2θ change diagram (XRD test diagram) and the XRD diagram of montmorillonite obtained by the method of regulating the interlayer spacing of montmorillonite in this embodiment at different output powers. Figure 2 It can be seen that the original montmorillonite d 001 The 2θ of the characteristic peak is 6.27 o , based on the Bragg equation 2dsinθ= nλ ( n =1, 2, 3, …), the interlayer distance of the original montmorillonite used in this experiment is found to be 14.10 Å.

[0053] When the average output power of infrared pulse laser is 10W and the output power of infrared continuous laser is 5W, the d 001 The characteristic peak shifted, its 2θ angle changed from 6.27° to 6.33°, and the interlayer distance decreased from 14.10 Å to 13.96 Å, indicating that the nanosecond laser thermally decomposed the water molecules between the montmorillonite layers during the action of the nanosecond laser on the montmorillonite, but the energy of the laser irradiation was not enough to cause the Ca2+ interlayer 2+ oscillation, so only the interlayer distance of montmorillonite crystals is reduced. When the average output power of infrared pulse laser is increased to 16W and the output power of infrared continuous laser is 6W, the modified montmorillonite crystals d 001 The 2θ angle of the characteristic peak increased to 6.55°, and the montmorillonite interlayer distance became 13.49 Å, indicating that with the increase of the average output power of the dual-path laser, the water molecules in the montmorillonite interlayer distance will be rapidly thermally decomposed, and the interlayer cations have a small force on the molecules when the interlayer oscillation is supported by only a small amount of water molecules, thus reducing the montmorillonite interlayer distance. When the average output power of the infrared pulse laser is adjusted to 22W and 28W, and the output power of the infrared continuous laser is adjusted to 7W and 8W, the d 001 The characteristic peaks shifted at a large angle, and 2θ shifted to 8.79° and 9.26°, respectively. This is because the increase in the average output power of the laser caused the water molecules between the montmorillonite crystal layers to decompose quickly and completely, and the interlayer cations to oscillate violently, but lacked the support of water molecules, which ultimately led to a decrease in the interlayer distance of the montmorillonite crystals, and the interlayer distance decreased to 10.05 Å and 9.54 Å, respectively. This shows that the method in this embodiment can regulate the interlayer distance of montmorillonite to a great extent.

[0054] Figure 3 This is a microscopic morphology of the interlayer spacing of montmorillonite when the average output power of the infrared pulse laser is 28W and the output power of the infrared continuous laser is 8W, and the interlayer spacing is 9.54 Å. Figure 4 This is a microscopic morphology of the interlayer spacing of montmorillonite without laser control, and its interlayer spacing is 14.10 Å, indicating that the method in this embodiment can significantly reduce the interlayer spacing of montmorillonite.

[0055] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other. For the system or device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0056] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A dual-light path montmorillonite interlayer spacing control device, characterized in that: include: An infrared pulse optical path comprises: an infrared pulse light source (1), a first beam splitter (3) and a first detector (5), wherein the infrared pulse light source (1) is used to emit an infrared pulse laser, the infrared pulse laser is split into a first beam of infrared pulse laser and a second beam of infrared pulse laser by the first beam splitter (3), the first beam of infrared pulse laser is transmitted to the first detector (5), and the first detector (5) is used to detect laser parameters of the infrared pulse laser; the second beam of infrared pulse laser is used to adjust the interlayer spacing of the montmorillonite (14), and the infrared pulse laser uses its nonlinear effect to adjust the interlayer spacing of the montmorillonite; An infrared continuous optical path comprises: an infrared continuous light source (2), a second beam splitter (8) and a second detector (9), wherein the infrared continuous light source (2) is used to emit an infrared continuous laser, the infrared continuous laser is split into a third infrared continuous laser beam and a fourth infrared continuous laser beam by the second beam splitter (8), the third infrared continuous laser beam is transmitted to the second detector (9), and the second detector (9) is used to detect laser parameters of the infrared continuous laser beam; the fourth infrared continuous laser beam is used to adjust the interlayer spacing of the montmorillonite (14), and the infrared continuous laser beam uses its thermal effect to adjust the interlayer spacing of the montmorillonite; A scanning optical path, comprising: a focusing mirror (11), a scanning mirror (13), and montmorillonite (14), wherein the focusing mirror (11) receives the second infrared pulse laser beam and the fourth infrared continuous laser beam and focuses them on the scanning mirror (13), and the scanning mirror (13) is controlled to scan along a preset moving track to adjust the interlayer spacing of the montmorillonite (14); The parameters of the laser are such that its total energy inside the montmorillonite satisfies the following relationship: in, , in, is the energy input source term, Indicates light intensity, A is the absorption ratio, α is the absorption coefficient, z is the depth of laser transmission into the material. n is the refractive index of montmorillonite, k is the extinction coefficient, λ is the wavelength of the incident laser.

2. The dual-light path montmorillonite interlayer spacing control device according to claim 1, characterized in that: The output power of the infrared continuous laser is 5-8W; and / or the output power of the infrared pulse laser is 10-28W.

3. The dual-light path montmorillonite interlayer spacing control device according to claim 1, characterized in that: The pulse width of the infrared pulse laser is 10-15ns.

4. The dual-light path montmorillonite interlayer spacing control device according to claim 1, characterized in that: The interlayer spacing of the montmorillonite (14) is adjusted in the range of 14.10 Å to 9.54 Å.

5. The dual-light path montmorillonite interlayer spacing control device according to claim 1, characterized in that: The preset movement trajectory is at least one of the following: Straight line, snake shape, U shape or Z shape.

6. The dual-light path montmorillonite interlayer spacing control device according to claim 1, characterized in that: Also includes: The X-ray diffractometer is used to measure the interlayer spacing of the montmorillonite (14) and feed back the measurement results to the infrared pulse light source (1) and the infrared continuous light source (2); the infrared pulse light source (1) and the infrared continuous light source (2) adjust their output laser parameters according to the measurement results.

7. The control method of the dual-light path montmorillonite interlayer distance control device according to any one of claims 1 to 6, characterized in that: The method comprises: The infrared pulse light source (1) emits an infrared pulse laser, which is split into a first beam of infrared pulse laser and a second beam of infrared pulse laser by the first beam splitter (3), and the first beam of infrared pulse laser is transmitted to the first detector (5), and the first detector (5) is used to detect laser parameters of the infrared pulse laser; the second beam of infrared pulse laser is used to adjust the interlayer spacing of the montmorillonite (14), and the infrared pulse laser uses its nonlinear effect to control the interlayer spacing of the montmorillonite; The infrared continuous light source (2) emits an infrared continuous laser, which is split into a third infrared continuous laser beam and a fourth infrared continuous laser beam by the second beam splitter (8), and the third infrared continuous laser beam is transmitted to the second detector (9), and the second detector (9) is used to detect laser parameters of the infrared continuous laser beam; the fourth infrared continuous laser beam is used to adjust the interlayer spacing of the montmorillonite (14), and the infrared continuous laser beam uses its thermal effect to adjust the interlayer spacing of the montmorillonite; The focusing mirror (11) receives the second infrared pulse laser beam and the fourth infrared continuous laser beam and focuses them on the scanning mirror (13); the scanning mirror (13) is controlled to scan along a preset moving track to adjust the interlayer spacing of the montmorillonite (14); The interlayer spacing of the montmorillonite (14) is measured by an X-ray diffractometer, and the measurement result is fed back to the infrared pulse light source (1) and the infrared continuous light source (2). The infrared pulse light source (1) and the infrared continuous light source (2) adjust their output laser parameters according to the measurement result.

8. The method according to claim 7, characterized in that The preset moving track is at least one of the following: a straight line, a snake shape, a U-shape or a Z-shape.

9. The method according to claim 7, characterized in that: The infrared pulse light source (1) and the infrared continuous light source (2) adjust their output laser parameters according to the measurement results, including: When the measurement interval is greater than the preset control interval, increasing the power of the infrared pulse light source (1) and the infrared continuous light source (2); When the measurement interval is smaller than the preset adjustment interval, the power of the infrared pulse light source (1) and the infrared continuous light source (2) is reduced.

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