Oily liquid absorbing and storing agent

Abstract

The invention relates to an oily liquid absorbing and storing agent which is selected from one of corn starch and cassava starch. The preparation method comprises the following steps: selecting proper macromolecular resin as a framework material: one or more than one of polypropylene, polystyrene and polymethyl methacrylate; one of benzoyl peroxide, azodiisobutyronitrile and dibenzoyl peroxide is selected; triphenyl phosphate or Lewis acid is commonly used, so that the process of generating free radicals by the initiator can be accelerated; the solvent is one of vinyl benzene, trimethylolpropane triacrylate and dimaleimide; one of sodium dodecyl benzene sulfonate and lauryl sodium sulfate can be selected. The invention also discloses a method.

Description

Technical Field

[0001] The invention belongs to the technical field of degradable powder production, in particular to an oily liquid storage absorbent. Background Art

[0002] During the transportation of oily hazardous chemicals, in the rescue work after a leakage accident, measures such as drainage and sand covering are generally taken to prevent the spread of the leak, protect the safety of personnel, and reduce the impact on the environment.

[0003] It is difficult to thoroughly clean up pollutants that occur when oil leaks in manufacturing companies or leak during the waste oil recovery process to prevent oily liquids from flowing into drainage ditches or seeping into the ground, causing water and soil pollution. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an oily liquid storage agent to at least partially solve the above technical problems.

[0005] The technical solution adopted by the present invention is as follows:

[0006] The present invention provides an oily liquid storage agent, comprising:

[0007] (1) Modifier: corn starch or tapioca starch;

[0008] (2) Framework material: Select a suitable polymer resin as the framework material: one or more of polypropylene, polystyrene, and polymethyl methacrylate;

[0009] (3) Initiator: benzoyl peroxide (BPO), azobisisobutyronitrile (AIBN), dibenzoyl peroxide (DBPO), select one of them;

[0010] (4) Accelerator: It can accelerate the process of initiator generating free radicals, commonly used are triphenyl phosphite or Lewis acid;

[0011] (5) Cross-linking agent: vinylbenzene, trimethylolpropane triacrylate (TMPTA), dimaleimide;

[0012] (6) Dispersant: Sodium dodecylbenzene sulfonate or sodium dodecyl sulfate can be selected.

[0013] In one embodiment of the present invention, the oily liquid storage agent is prepared by the following method:

[0014] S1. Solution method: dissolve the polymer resin in an appropriate organic solvent, add modifiers, crosslinking agents, initiators, etc. at room temperature and closed pressure, stir evenly, and prepare the oil-absorbing material by coating, pouring, spinning, etc.

[0015] S2. Suspension polymerization method: After mixing polymer resin monomer, modifier, initiator, crosslinking agent, dispersant, etc. at 85-105°C and 1.5-2 atmospheres, suspension polymerization is carried out in water to obtain a microsphere oil-absorbing material.

[0016] In one embodiment of the present invention, the adsorbent is used to remove interfering substances that affect the analysis of polychlorinated biphenyls contained in the oily liquid from the above-mentioned oily liquid, and the adsorbent contains nitrate silica gel obtained by treating active silica gel with a mixed aqueous solution of copper nitrate and silver nitrate.

[0017] In one embodiment of the present invention, the molar ratio of copper element to silver element in the above nitrate silica gel, that is, copper element:silver element is 1:0.5-2.0.

[0018] In one embodiment of the present invention, the adsorption column is used to remove interfering substances that affect the analysis of polychlorinated biphenyls contained in the oily liquid from the above-mentioned oily liquid. The column comprises a first layer and a second layer, and the first layer is composed of sulfuric acid silica gel; the second layer is arranged below the above-mentioned first layer, and is composed of an adsorption agent, and the adsorption agent contains nitrate silica gel obtained by treating active silica gel with a mixed aqueous solution of copper nitrate and silver nitrate.

[0019] In one embodiment of the present invention, the molar ratio of copper element to silver element in the above nitrate silica gel, that is, copper element:silver element is 1:0.5-2.0.

[0020] In one embodiment of the present invention, the first layer and the second layer are packed in the same column.

[0021] In one embodiment of the present invention, the column comprises a front column filled with the first layer and a rear column filled with the second layer, and the front column and the rear column are connected in a detachable manner.

[0022] In one embodiment of the present invention, the oily liquid storage agent further comprises: the filler also comprises one or more of mica, pearl powder, zinc oxide, titanium dioxide, silicon oxide, nylon powder, talcum powder, silver white powder, walnut shell frosted particles, wax-wrapped VC, silicone oil-wrapped iron yellow pigment, and silicone oil-wrapped iron red pigment.

[0023] The beneficial effects of the technical solution of the present invention are:

[0024] Through the combined effects of factors such as the lipophilicity of the skeleton material, the interaction between the modifier and the oily substance, and the appropriate porosity formed by the cross-linked structure, the oily liquid can be efficiently adsorbed and the oily liquid can be quickly adsorbed into the pore structure of the adsorption storage agent. The composition structure of the adsorption storage agent determines that it has a certain selective adsorption capacity for oily liquids. For example, the surface properties and pore size of the skeleton material are more suitable for adsorbing specific types of oily molecules, which helps to selectively adsorb oily components in complex mixed systems (such as oil-water mixtures) to achieve efficient separation and purification purposes.

[0025] The absorption and storage agent can maintain its structural integrity and will not break or disintegrate easily, so that the absorption and storage agent can stably perform its function of adsorbing and storing oily liquids for a long time. By selecting different skeleton materials, modifiers, cross-linking agents and other components, the physical properties of the absorption and storage agent, such as hardness, flexibility, density, etc., can be adjusted, so that the absorption and storage agent can be customized according to different application scenarios. For example, in situations where a soft absorption and storage agent is required (such as in soft fabrics that absorb oil substances), the formula can be adjusted to have appropriate flexibility, and in situations where a high-strength absorption and storage agent is required (such as in industrial oil filtration equipment), it can be adjusted to have higher hardness and strength.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or may be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0028] Figure 1 A schematic diagram of the composition of the oily liquid storage absorbent proposed in an embodiment of the present invention;

[0029] Figure 2 This is a flow chart for preparing the oily liquid storage absorbent proposed in an embodiment of the present invention. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0031] An oily liquid storage absorbent according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0032] like Figure 1 to Figure 2 As shown, an embodiment of the present invention provides an oily liquid storage agent, comprising:

[0033] (1) Modifier: corn starch or tapioca starch;

[0034] (2) Framework material: Select a suitable polymer resin as the framework material: one or more of polypropylene, polystyrene, and polymethyl methacrylate;

[0035] (3) Initiator: benzoyl peroxide (BPO), azobisisobutyronitrile (AIBN), dibenzoyl peroxide (DBPO), select one of them;

[0036] (4) Accelerator: It can accelerate the process of initiator generating free radicals, commonly used are triphenyl phosphite or Lewis acid;

[0037] (5) Cross-linking agent: vinylbenzene, trimethylolpropane triacrylate (TMPTA), dimaleimide;

[0038] (6) Dispersant: Sodium dodecylbenzene sulfonate or sodium dodecyl sulfate can be selected.

[0039] In the specific application of the embodiment of the present invention, in the entire absorption and storage agent system, starch can improve the hydrophilic and hydrophobic balance of the absorption and storage agent. On the one hand, starch molecules can form certain hydrogen bonds or van der Waals forces with oily substances, so that the oily liquid can be better adsorbed; on the other hand, it also helps to adjust the overall physical properties of the absorption and storage agent, such as increasing the flexibility of the system or adjusting the pore structure of the system. Polypropylene has good chemical stability and certain flexibility, and the structure of its molecular chain can form a certain spatial network. Polystyrene has a rigid benzene ring structure, which can provide better structural support, and its surface properties help to interact with oily substances.

[0040] When more than one polymer resin is used, they can work together, for example, one resin provides better flexibility, and the other provides better structural strength, to jointly construct a spatial structure that is conducive to the adsorption and storage of oily liquids. Benzoyl peroxide (BPO), azobisisobutyronitrile (AIBN), and dibenzoyl peroxide (DBPO) initiators play a key role in initiating polymerization reactions in the entire system. Taking benzoyl peroxide (BPO) as an example, it decomposes under certain conditions (such as heating or light) to produce free radicals. These free radicals can initiate the polymerization reaction of the skeleton material polymer resin, so that the monomer molecules are continuously connected to form polymer chains, which determines the degree of polymerization, molecular weight and other properties of the skeleton material, and thus affects the porosity, adsorption capacity and other properties of the storage agent.

[0041] Accelerators can accelerate the process of initiators generating free radicals. For example, triphenyl phosphite can interact with initiators to reduce the activation energy required for the initiator to decompose and generate free radicals, so that the initiator can quickly generate enough free radicals under milder conditions (such as lower temperature), thereby accelerating the polymerization reaction, improving production efficiency, and helping to more accurately control the structure and performance of the storage agent.

[0042] Cross-linking agents can form cross-linked structures between polymer skeleton materials. During the polymerization process, different polymer chains are connected together to form a three-dimensional network structure, which can increase the stability and mechanical strength of the storage agent, prevent the storage agent from deforming or disintegrating after absorbing oily liquids, and also help to adjust the pore size and distribution of the storage agent, and improve the adsorption capacity of oily liquids.

[0043] In the preparation process of the storage agent, the particle size and surface properties of each component are different, and they are easy to aggregate together. Sodium dodecylbenzene sulfonate or sodium dodecyl sulfate has a hydrophilic head and a hydrophobic tail structure, which can be adsorbed on the surface of each component, reduce the surface tension between the components, and make the components evenly dispersed in the system, which can ensure that the components of the storage agent can fully play their role and improve the quality and performance uniformity of the storage agent.

[0044] In one embodiment, the oily liquid storage agent is prepared by the following method:

[0045] S1. Solution method: dissolve the polymer resin in an appropriate organic solvent, add modifiers, crosslinking agents, initiators, etc. at room temperature and closed pressure, stir evenly, and prepare the oil-absorbing material by coating, pouring, spinning, etc.

[0046] S2. Suspension polymerization method: After mixing polymer resin monomer, modifier, initiator, crosslinking agent, dispersant, etc. at 85-105°C and 1.5-2 atmospheres, suspension polymerization is carried out in water to obtain a microsphere oil-absorbing material.

[0047] In the specific application of the embodiment of the present invention, the polymer resin has a specific molecular structure and can form a uniform solution in an organic solvent. The organic solvent, as a medium, helps to disperse the polymer resin molecules so that the molecular chains can be fully stretched. The role of the modifier is to change certain properties of the polymer resin. For example, it can adjust the polarity, oleophilicity and other properties of the polymer resin, so that it has better adsorption capacity for oily liquids.

[0048] Crosslinking agents can form chemical bonds or physical crosslinking points between polymer resin molecules, which helps to improve the stability and mechanical strength of oil-absorbing materials. When absorbing oily liquids, the crosslinking structure can prevent excessive swelling and dissolution of the polymer chain, so that the oil-absorbing material maintains a certain shape and structural integrity during the oil absorption process. The role of the initiator is to initiate certain chemical reactions. In this process, it will trigger the growth, branching or crosslinking reaction of the polymer resin molecular chain. For example, if there are reactive groups in the polymer resin, the initiator can promote the reaction between these groups, thereby changing the structure of the polymer and further affecting its oil absorption performance.

[0049] The mixed solution is converted into an oil-absorbing material by coating, pouring, spinning and other methods. The coating method can evenly coat the solution on a specific substrate to form a thin sheet of oil-absorbing material; the pouring method can be used to prepare block-shaped oil-absorbing materials; the spinning method can obtain fibrous oil-absorbing materials. When oil-absorbing materials of different shapes absorb oily liquids, the oily liquid molecules can diffuse into the molecular chains of the polymer resin and be wrapped and absorbed by the polymer chains.

[0050] At 85-105℃ and 1.5-2 atmospheres, polymer resin monomers, modifiers, initiators, crosslinking agents, dispersants, etc. are mixed. This specific temperature and pressure range is to provide suitable reaction conditions. High temperature helps to increase the reaction rate and enable the monomers to polymerize quickly; a certain pressure helps to maintain the stability of the reaction system and prevent problems such as volatilization of substances.

[0051] Suspension polymerization is carried out in water. The polymer resin monomer undergoes polymerization reaction under the action of the initiator to form polymer microspheres. The modifier also plays a role in adjusting the properties of the polymer in this process, such as changing the properties of the microsphere surface to make it more compatible with oily liquids. The cross-linking agent promotes the formation of cross-linked structures between polymer molecular chains to enhance the stability of the microspheres. The dispersant makes the monomer droplets evenly dispersed in the water to prevent the aggregation of the monomer droplets.

[0052] The microsphere oil-absorbing material finally formed has a large specific surface area. When adsorbing oily liquid, the oily liquid molecules can be adsorbed on the surface of the microspheres, and because the polymer structure inside the microspheres also has a certain adsorption capacity, the oily liquid can further diffuse into the microspheres and be adsorbed, thereby achieving efficient absorption and storage of the oily liquid.

[0053] In one embodiment, the adsorbent is used to remove interfering substances that affect the analysis of polychlorinated biphenyls contained in the oily liquid from the above-mentioned oily liquid. The adsorbent contains nitrate silica gel obtained by treating active silica gel with a mixed aqueous solution of copper nitrate and silver nitrate. The molar ratio of copper element to silver element in the above-mentioned nitrate silica gel, that is, copper element:silver element is 1:0.5-2.0.

[0054] In a specific application of the embodiment of the present invention, in an oily liquid, the interfering substances have different chemical structures and properties, and the copper and silver elements in the nitrate silica gel can interact specifically with the interfering substances. For some interfering substance molecules containing lone pairs of electrons, such as some nitrogen-containing and sulfur-containing organic compounds, copper ions and silver ions can act as Lewis acids to accept the lone pairs of electrons in these molecules, thereby forming coordination bonds and adsorbing the interfering substances to the surface of the nitrate silica gel. This adsorption is a selective adsorption based on chemical affinity, which can effectively capture interfering substances from oily liquids.

[0055] When the molar ratio of copper to silver is 1:0.5-2.0, copper ions and silver ions have a synergistic effect on nitrate silica gel, which is reflected in their adsorption capacity for different types of interfering substances. Silver ions have a better adsorption effect on other interfering substances containing unsaturated bonds (such as carbon-carbon double bonds, carbon-nitrogen double bonds, etc.). In this specific molar ratio range, the two can complement each other and jointly improve the adsorption efficiency of various interfering substances.

[0056] The appropriate molar ratio helps maintain the charge balance and distribution of adsorption sites on the surface of nitrate silica gel. If the proportion of silver is too high, the charge on the surface of silica gel will be too concentrated, affecting the adsorption selectivity of certain interfering substances; on the contrary, if the proportion of silver is too low, the synergistic adsorption between silver ions and copper ions cannot be fully utilized, thereby reducing the overall adsorption capacity of interfering substances.

[0057] In one embodiment, the adsorption column is used to remove interfering substances that affect the analysis of polychlorinated biphenyls contained in the oily liquid from the above-mentioned oily liquid. The column comprises a first layer and a second layer, and the first layer is composed of sulfuric acid silica gel; the second layer is arranged below the above-mentioned first layer, and is composed of an adsorption agent, and the adsorption agent contains nitrate silica gel obtained by treating active silica gel with a mixed aqueous solution of copper nitrate and silver nitrate, and the molar ratio of copper element to silver element in the above-mentioned nitrate silica gel, that is, copper element:silver element is 1:0.5-2.0, and the above-mentioned first layer and the above-mentioned second layer are filled in the same column, and the column comprises a front column filled with the above-mentioned first layer and a rear column filled with the above-mentioned second layer, and the above-mentioned front column and the above-mentioned rear column are connected in a detachable manner.

[0058] In the specific application of the embodiment of the present invention, the presence of the sulfate group makes the sulfuric acid silica gel have certain acidity and adsorption properties. In this absorption storage column, when the oily liquid passes through the first layer, some interfering substances in the oily liquid will be adsorbed based on its chemical interaction with the sulfuric acid silica gel, and these interfering substances have a chemical structure that can react with the acidic sites on the surface of the sulfuric acid silica gel. For example, some alkaline impurity molecules will form ionic bonds or acid-base interactions with the sulfate ions on the sulfuric acid silica gel, thereby being retained in the first layer, playing a role in preliminary removal of interfering substances.

[0059] The second layer of nitrate silica gel is obtained by treating active silica gel with a mixed aqueous solution of copper nitrate and silver nitrate. The copper element and the silver element in the nitrate silica gel have a specific molar ratio (1:0.5-2.0). When the oily liquid enters the second layer after the preliminary treatment of the first layer, the presence of copper and silver gives the nitrate silica gel a special chemical activity. The silver element has strong oxidizing properties and affinity for specific substances. It can react chemically with some sulfur-containing, phosphorus-containing substances in the oily liquid that are likely to interfere with the analysis of polychlorinated biphenyls. For example, some sulfur-containing organic compounds will react with silver and be adsorbed on the nitrate silica gel.

[0060] Copper also has certain chemical activity, and it can interact with some unsaturated organic compounds in oily liquids. For example, unsaturated olefins will coordinate with copper ions and be adsorbed, further removing interfering substances in oily liquids, especially those that affect the analysis of polychlorinated biphenyls.

[0061] The front column is filled with the first layer of sulfuric acid silica gel, and the rear column is filled with the second layer of nitrate silica gel, which is convenient for the maintenance and replacement of the column. When the first layer of sulfuric acid silica gel is saturated or contaminated, the front column can be easily separated from the rear column, and the front column can be treated or replaced separately. If a similar situation occurs in the rear column, it can also be operated separately. At the same time, it is helpful to study and optimize the adsorption effect of different layers. By analyzing the composition changes of the front column and the rear column before and after the treatment of oily liquids, the parameters such as the adsorbent composition and proportion of each layer can be adjusted more accurately.

[0062] In one embodiment, the oily liquid storage agent further includes: the filler also includes one or more of mica, pearl powder, zinc oxide, titanium dioxide, silicon oxide, nylon powder, talcum powder, silver white powder, walnut shell frosted particles, wax-wrapped VC, silicone oil-wrapped iron yellow pigment, and silicone oil-wrapped iron red pigment.

[0063] In the specific application of the embodiment of the present invention, mica has a layered or flaky structure. In the oily liquid storage agent, the layered structure of mica can provide space for the oily substance to adhere and store, and the layers can accommodate the oily components, just like a multi-layered shelf, and the oily substance can be sandwiched between these "shelves". The chemical properties of the mica surface make it have a certain affinity for oily liquids. Due to its relatively stable structure, it is not easy to chemically react with oily liquids, but it can absorb and store oily liquids by physical adsorption, so that the oily liquid can be evenly distributed in the storage agent system.

[0064] Pearlescent powder has special optical properties and can reflect and refract light. In the storage agent, its presence can change the optical environment around the oily liquid. From the storage principle, this optical property of pearlescent powder will affect the arrangement of oily liquid molecules. For example, it will induce the oily liquid molecules to form an orderly arrangement structure around it, which is conducive to storage. There are some active sites on the surface of pearlescent powder, which can adsorb oily liquid molecules. Its tiny particles can provide a large specific surface area, thereby increasing the contact area with the oily liquid and realizing the storage of the oily liquid.

[0065] The surface of zinc oxide has certain chemical activity. In the oily liquid storage agent, it can undergo surface chemical adsorption with certain components in the oily liquid. For example, some unsaturated bonds or polar groups in the oily liquid will interact with the metal ions or oxygen ions on the surface of zinc oxide, causing the oily liquid to be adsorbed on the surface of zinc oxide.

[0066] Zinc oxide can also adjust the overall chemical and physical properties of the storage agent, which can affect the pH value, stability, etc. of the storage agent, thereby indirectly affecting the storage capacity of oily liquids. For example, if the pH value of the storage agent system is appropriate, it will promote the ionization of certain components in the oily liquid or the change of molecular form, which is more conducive to storage. Titanium dioxide has photocatalytic properties. Under light conditions, it can produce some active substances. These active substances will change the structure or activity of the oily liquid molecules, making the oily liquid molecules easier to be adsorbed. At the same time, titanium dioxide itself also has a certain adsorption capacity, and its porous structure can provide adsorption sites for oily liquids.

[0067] Tiny particles of titanium dioxide can act as a physical barrier in the storage agent. The movement of oily liquid molecules in the storage agent will be restricted by titanium dioxide particles, thereby increasing the contact time and opportunity of oily liquid molecules with other storage components, which is beneficial to the storage of oily liquids.

[0068] Silica usually has a porous structure, and these pores can hold oily liquids. Just like a sponge absorbs water, oily liquids can be filled into the pores of silica. The porous structure provides a larger specific surface area, giving silica more contact opportunities with oily liquids, thereby improving absorption and storage efficiency.

[0069] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article 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 process, method, article or device.

[0070] The above description of the present invention and its implementation methods is not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the protection scope of the present invention.

Claims

1. An oily liquid storage agent, characterized in that: include: (1) Modifier: corn starch or tapioca starch; (2) Framework material: Select a suitable polymer resin as the framework material: one or more of polypropylene, polystyrene, and polymethyl methacrylate; (3) Initiator: benzoyl peroxide (BPO), azobisisobutyronitrile (AIBN), dibenzoyl peroxide (DBPO), select one of them; (4) Accelerator: It can accelerate the process of initiator generating free radicals, commonly used are triphenyl phosphite or Lewis acid; (5) Cross-linking agent: vinylbenzene, trimethylolpropane triacrylate (TMPTA), dimaleimide; (6) Dispersant: Sodium dodecylbenzene sulfonate or sodium dodecyl sulfate can be selected.

2. The oily liquid storage agent according to claim 1, characterized in that: The following preparation method: S1. Solution method: dissolve the polymer resin in an appropriate organic solvent, add modifiers, crosslinking agents, initiators, etc. at room temperature and closed pressure, stir evenly, and prepare the oil-absorbing material by coating, pouring, spinning, etc. S2. Suspension polymerization method: After mixing polymer resin monomer, modifier, initiator, crosslinking agent, dispersant, etc. at 85-105°C and 1.5-2 atmospheres, suspension polymerization is carried out in water to obtain a microsphere oil-absorbing material.

3. The oily liquid storage agent according to claim 1, characterized in that: The adsorbent is used to remove interfering substances that affect the analysis of polychlorinated biphenyls contained in the oily liquid from the above-mentioned oily liquid. The adsorbent contains nitrate silica gel obtained by treating active silica gel with a mixed aqueous solution of copper nitrate and silver nitrate.

4. The oily liquid storage agent according to claim 1, characterized in that: in, The molar ratio of copper element to silver element in the above nitrate silica gel, that is, copper element:silver element is 1:0.5-2.

0.

5. The oily liquid storage agent according to claim 1, characterized in that: The adsorption column is used to remove interfering substances that affect the analysis of polychlorinated biphenyls contained in the oily liquid from the above-mentioned oily liquid. The column has a first layer and a second layer. The first layer is composed of sulfuric acid silica gel; the second layer is arranged below the above-mentioned first layer and is composed of an adsorption agent, and the adsorption agent contains nitrate silica gel obtained by treating active silica gel with a mixed aqueous solution of copper nitrate and silver nitrate.

6. The oily liquid storage agent according to claim 1, characterized in that: in, The molar ratio of copper element to silver element in the above nitrate silica gel, that is, copper element:silver element is 1:0.5-2.

0.

7. The oily liquid storage agent according to claim 1, characterized in that: in, The first layer and the second layer are filled in the same column.

8. The oily liquid storage agent according to claim 1, characterized in that: in, The column includes a front column filled with the first layer and a rear column filled with the second layer, and the front column and the rear column are connected in a detachable manner.

9. The oily liquid storage agent according to claim 1, characterized in that: Also includes: The filler also includes one or more of mica, pearl powder, zinc oxide, titanium dioxide, silicon oxide, nylon powder, talcum powder, silver white powder, walnut shell frosted particles, wax-wrapped VC, silicone oil-wrapped iron yellow pigment, silicone oil-wrapped iron red pigment.

Images