Composite absorption core and preparation method thereof

Abstract

The invention discloses a composite absorption core and a preparation method thereof. The wrapping layer is arranged outside the absorption layer, and the absorption layer comprises an upper layer and a lower layer; wherein the cross section of the upper layer and / or the lower layer is V-shaped or W-shaped; the wrapping layer at least comprises an upper surface layer and a lower surface layer, and the upper surface layer and the lower surface layer are made of 3D mesh non-woven fabric; the 3D mesh non-woven fabric is used as the upper surface layer and the lower surface layer to improve the transient absorption capacity, cotton fibers and specially-treated cotton fibers are matched with special-shaped ES fibers to construct a directional transient absorption permeation channel, a double-W-groove structure in the absorption layer is used for constructing a high-speed infiltration and diffusion mechanism, the liquid diffusion efficiency and the flow guide effect are improved, and the absorption effect is improved. Meanwhile, water-absorbent resin in the absorption liquid storage layer is used for absorbing and storing a large amount of liquid, so that the composite core body can quickly absorb a large amount of liquid and reduce reverse osmosis, and meanwhile, the reverse osmosis of the liquid can be well inhibited.

Description

Technical Field

[0001] The invention relates to a composite absorbent core and a preparation method thereof. Background Art

[0002] With the steady growth of the economy, the disposable sanitary products industry has achieved sustained growth in recent years, especially baby diapers and adult diapers. Diapers are a commonly used sanitary product for babies. The structure of diapers mainly includes a surface coating layer, a guide layer, an absorbent core layer and a leak-proof bottom film. The performance of diapers depends largely on the core performance, which determines the absorption speed, absorption volume, water lock ability and comfort of diapers. As consumers' spending power increases, they pay more attention to the quality of life, and the demand for diapers continues to increase. According to market demand research, consumers attach great importance to the breathability, absorbency, non-allergy, dryness and other needs of diapers, and the core performance is directly related to their needs.

[0003] There are two main types of diaper core structures: traditional wood pulp + polymer and composite absorbent paper core. The main advantages of composite absorbent paper core (abbreviated as absorbent paper) are: good core integrity, no breakage and agglomeration, thin and soft; but its disadvantages are also obvious: poor instantaneous liquid absorption capacity, weak diffusion performance, poor dryness, and airtightness. At the same time, the super absorbent resin will gel after swelling, resulting in infiltration blockage, changes in liquid absorption capacity, and leakage. In addition, diaper products are used for a long time and are prone to stuffiness. At the same time, due to poor permeability and high humidity, it is conducive to the reproduction of microorganisms and gas production, irritating the skin, and causing a series of skin problems. Summary of the invention

[0004] In order to overcome the above-mentioned defects, the object of the present invention is to provide a composite absorbent core and a preparation method thereof.

[0005] To achieve the above object, the composite absorbent core of the present invention comprises at least an absorbent layer, wherein the absorbent layer comprises an upper layer and a lower layer; wherein the cross-section of the upper layer and / or the lower layer is V-shaped or W-shaped.

[0006] Furthermore, the upper and lower layers of the absorption layer are both W-shaped, and the spacing of the W-shapes of the upper layer is smaller than the spacing of the W-shapes of the lower layer; and the height of the W-shapes of the upper layer is smaller than the height of the W-shapes of the lower layer.

[0007] Furthermore, a wrapping layer is arranged outside the absorption layer, and the wrapping layer at least includes an upper surface layer and a lower surface layer, wherein the upper surface layer and the lower surface layer are made of 3D mesh nonwoven fabric;

[0008] The 3D mesh nonwoven fabric comprises an upper fiber web and a lower fiber web; a plurality of fiber bundles are connected between the upper fiber web and the lower fiber web by a warp knitting process to form a U-shaped fiber bundle structure.

[0009] Furthermore, the fiber bundle is made of special-shaped fibers, and the special-shaped fibers are hollow-shaped, Y-shaped, double-cross-shaped, and M-shaped.

[0010] Furthermore, the upper fiber web is formed by mixing untreated cotton fibers and specially treated cotton fibers and combing them in a directional and transversely spaced manner;

[0011] The lower fiber web is made of specially treated cotton fibers and artificial muscle fibers that are cross-combed horizontally and vertically; the longitudinal fibers in the lower fiber web are treated cotton fibers; the transverse fibers in the lower fiber web are artificial muscle fibers, which expand and contract when wet and drive the upper fiber web to bend to fit the body and prevent liquid leakage, while enlarging the openings on the middle fiber bundles.

[0012] Furthermore, the specially treated cotton fibers are fibers treated with a fast penetrating finishing agent;

[0013] The fast penetrating finishing agent comprises the following raw materials in parts by weight: 10-20 parts of polysiloxane compound, 10-20 parts of fatty alcohol polyoxyethylene ether, 1-10 parts of azone or lauryl azone, 0.5-1 parts of basic amino acid and 100-200 parts of deionized water.

[0014] Furthermore, the wrapping layer further comprises a side, and a plurality of through holes are arranged on the side of the wrapping layer.

[0015] To achieve the above object, the preparation method of the composite absorbent core of the present invention comprises the following steps:

[0016] 1) preparing an upper layer and a lower layer of an absorption layer;

[0017] 2) preparing a wrapping layer;

[0018] The wrapping layer at least comprises an upper surface layer and a lower surface layer, wherein the upper surface layer and the lower surface layer are made of 3D mesh nonwoven fabric;

[0019] The 3D mesh nonwoven fabric is composed of an upper fiber web and a lower fiber web; a plurality of fiber bundles are connected between the upper fiber web and the lower fiber web by warp knitting technology to form a U-shaped fiber bundle structure; wherein

[0020] The upper fiber web is made of untreated cotton fibers and specially treated cotton fibers that are mixed and oriented and combed transversely at intervals;

[0021] The lower fiber web is made of specially treated cotton fibers and artificial muscle fibers that are cross-combed horizontally and vertically; the longitudinal fibers in the lower fiber web are treated cotton fibers; the transverse fibers in the lower fiber web are artificial muscle fibers, which expand and contract when wet and drive the upper fiber web to bend to fit the body and prevent liquid leakage, while enlarging the openings on the middle fiber bundles.

[0022] Furthermore, the specially treated cotton fibers are fibers treated with a fast penetrating finishing agent;

[0023] Take the following raw materials in parts by weight: 10-20 parts of polysiloxane compound, 10-20 parts of fatty alcohol polyoxyethylene ether, 1-10 parts of azone or lauryl azone, 0.5-1 parts of basic amino acid, and 100-200 parts of deionized water;

[0024] The polysiloxane compound is mixed with the fatty alcohol polyoxyethylene ether, and nonionic surfactants such as azone or lauryl azone are added as emulsifiers and rapid penetrants. After mixing evenly, deionized water is added to emulsify and disperse it, and then alkaline amino acids are added to catalyze polymerization to prepare a microemulsion.

[0025] The present invention uses 3D mesh nonwoven fabrics as upper and lower surface layers to improve instantaneous absorption capacity, wherein cotton fibers, specially treated cotton fibers, artificial muscle fibers and special-shaped ES fibers are used to construct directional instantaneous absorption penetration channels, and the double W groove structure in the absorption layer is used to construct a high-speed infiltration and diffusion mechanism to improve liquid diffusion efficiency and diversion effect. At the same time, the absorption liquid storage layer has a water-absorbing resin to absorb and store a large amount of liquid, so that the composite core can quickly absorb a large amount of liquid and reduce reverse osmosis, and at the same time can well inhibit liquid reverse osmosis; at the same time, the mesh holes of the upper and lower surface layers drive air flow, and the first air permeable holes and the second air permeable holes of the absorption layer construct a breathable channel to accelerate air circulation and take away water vapor, reduce the stuffiness and the growth of microorganisms, and keep the core dry. The overall composite core uses 3D mesh nonwoven fabrics as the upper and lower surface layers, and the hydrophilic fibers, hydrophobic fibers and water-absorbing resin in the absorption layer absorb moisture to construct a one-layer complex network, so that the core is more stable and not easy to form lumps and break. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the absorption layer of the present invention.

[0027] Figure 2 Schematic diagram of the structure of the wrapping layer. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0029] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The "artificial muscle fibers" referred to in the present invention refer to fibers that shrink when wet, such as the artificial muscle fibers prepared in the method for preparing smart fabrics based on silk artificial muscles in CN109652894A.

[0033] Example 1

[0034] like Figure 1 As shown, the absorbent core of the present invention comprises at least one absorbent layer, and the absorbent layer adopts a special flow-guiding, diffusion and air-permeable double W-shaped structure:

[0035] In the double W-shaped structure, the upper layer is designed as a small W layer, which uses specially processed cotton fibers and polyester fibers to construct a mesh fluffy cotton that crosses horizontally and vertically. Super absorbent resin is added to the gaps in the mesh fluffy cotton and filled to the position of the small W groove. When the liquid seeps down, it is drained through the small W groove to quickly absorb the stored liquid. The hydrophilic fiber, hydrophobic fiber, and absorbent resin absorb moisture to construct a layered complex network, which is more stable and the core is not easy to deform.

[0036] In the double W-shaped structure, the lower layer is designed as a large W layer (the span and height of each span of the large W are greater than those of the small W), and the upper and lower layers of specially treated cotton fibers and artificial muscle fibers are directional combed. The upper artificial muscle fibers are combed longitudinally, and the treated cotton fibers in the lower layer are combed transversely. The gaps in the fiber net are filled with high water-retention absorbent resin for liquid storage. After the liquid infiltrates into the large W layer, the artificial muscle fibers are driven to expand and contract when wet, pulling the lower fiber net to bend, thereby increasing the gaps in the large W layer, increasing the liquid storage space, and improving the liquid storage capacity. At the same time, the shape stability of the guide groove of the large W layer is improved, and the cotton fibers of the lower fiber net quickly promote penetration, helping the absorbent resin to absorb faster and reduce reverse osmosis. The first ventilation hole and the second ventilation hole are set in two adjacent W layers and the large W layer, and the lower large W layer is treated with a small round hole mesh of 0.5mm-5mm. The first ventilation hole and the second ventilation hole construct a ventilation channel to reduce water vapor, reduce humidity, increase air flow, reduce stuffiness and allergies, and keep the core dry.

[0037] Example 2

[0038] Based on the above embodiment, the absorbent core further includes a wrapping layer, and the wrapping layer at least includes an upper surface layer located above the absorbent layer and a lower surface layer located below the absorbent layer; the upper surface layer and the lower surface layer are 3D mesh nonwoven fabrics.

[0039] like Figure 2 As shown, the 3D mesh nonwoven fabric includes three layers: upper, middle and lower layers. The upper layer is a fiber web made of a mixed combed cotton fiber, the lower layer is a fiber web made of a mixed combed cotton fiber and an artificial muscle fiber, and the middle layer is a 3D mesh nonwoven fabric with multiple U-shaped positioning instant suction channels made of special-shaped ES fiber bundles through warp knitting technology and cotton fiber weaving reinforcement and hot air bonding.

[0040] The above-mentioned cotton fiber is a multi-layered structure with a central cavity that can quickly absorb liquid, and has three free hydroxyl groups with extremely high chemical reaction activity. The upper fiber web is made of untreated cotton fibers and specially treated cotton fibers, which are mixed and directionally combed in a transverse and interval manner to conduct moisture in a vertical direction. The lower fiber web is made of specially treated cotton fibers and artificial muscle fibers, which are cross-combed in the transverse and longitudinal directions. The transverse direction is artificial muscle fibers (such as natural fiber silk, spider silk, and cotton thread), and the longitudinal direction is treated cotton fibers. The artificial muscle fibers generate expansion and contraction when wet, driving the upper fiber web to bend more closely to prevent liquid leakage. At the same time, the openings on the fiber bundles in the middle layer become larger, which quickly diffuse from the surface layer to the absorption layer. At the same time, due to the shrinkage of the lower fiber web, the pore size is reduced, which reduces reverse osmosis and keeps the surface layer dry. The surface layer is set as a mesh layer to filter large particles and prevent the fibers in the water-absorbing layer from being blocked and affecting the capillary action. Among them, the specially treated cotton fibers react with the free hydroxyl groups through the rapid penetration finishing agent to produce chemical bond cross-linking, reduce the surface binding force with the cotton fibers, so that the cotton fibers increase the instantaneous absorption capacity and have a certain hydrophobicity after special treatment. At the same time, the finishing agent is also very firmly adsorbed on the fiber surface and covers the fiber surface.

[0041] The above-mentioned rapid penetration finishing agent comprises the following raw materials in parts by weight: 10-20 parts of polysiloxane compound, 10-20 parts of fatty alcohol polyoxyethylene ether, 1-10 parts of azone or lauryl azone, 0.5-1 parts of basic amino acid, 100-200 parts of deionized water, etc.;

[0042] The preparation process of the above-mentioned rapid penetration finishing agent is as follows: a polysiloxane compound is mixed with a fatty alcohol polyoxyethylene ether, a nonionic surfactant such as azone or lauryl azone is added as an emulsifier and a rapid penetration agent, deionized water is added to emulsify and disperse it, and then an alkaline amino acid is added to catalyze its polymerization to prepare a microemulsion.

[0043] Among them, amino acids are natural biological materials, which are safe and non-cytotoxic, reduce skin irritation and allergy rate. Basic amino acids are one or more of lysine, arginine and histidine, and their side chains carry basic groups such as amino, imidazole and guanidine. Azone or lauryl azone is a highly efficient, safe and non-toxic high permeability enhancer and non-ionic surfactant, which has obvious and efficient permeability-enhancing effect on both hydrophilic and lipophilic fibers.

[0044] Utilizing the molecular structure characteristics of polysiloxane compounds, non-ionic surfactants and alkaline amino acids are used to emulsify and catalyze them to form multiple active sites, and amino and polyoxyethylene double hydrophilic functional groups are introduced to prepare hydrophilic fast-penetrating functional finishing agents with functional sites, making the finishing agent more stable and soft. At the same time, alkaline amino acids and azone (or lauryl azone) can increase the positive charge of the finishing agent, making it have a certain polarity, react with the free hydroxyl groups of cotton fibers, produce chemical bond cross-linking, and adjust the hydrophilicity of cotton fibers; by adjusting the addition ratio of azone or lauryl azone to control the surface tension and osmotic pressure, the contact angle is controlled at 30°-90°, and a hydrophilic permeation balance is established. When a certain pressure is applied during use by the human body, the liquid is promoted to diffuse on the surface, the moisture conduction capacity is improved, and a fast penetration channel is established to allow the liquid to quickly reach the absorption layer.

[0045] The middle layer ES fiber adopts the warp knitting process to form a U-shaped fiber bundle structure with the upper and lower surface cotton fibers to enhance the capillary effect, construct an instantaneous absorption channel, and utilize special-shaped fibers (hollow type or Y type or double cross type or M type, etc.) to enhance the fiber porosity. At the same time, the microemulsion of the finishing agent has a small particle size, which is conducive to its penetration into the interior of the ES fiber bundle, promoting the wetting and coating of the fibers, and utilizing the capillary effect liquid to quickly promote liquid penetration, so that the liquid will not stay on the surface and is quickly absorbed to reach the absorption layer.

[0046] Example 3

[0047] This embodiment is a further improvement on the above embodiment. Ventilation holes are designed on the large W layer at the bottom of the absorbent core and on the sides of the wrapping layer. The diameter of the vents is 0.5mm-5mm. By constructing a breathable channel, water vapor is reduced, humidity is reduced, air flow is increased, stuffiness and allergies are reduced, and the core is kept dry.

[0048] In summary, the present invention uses 3D mesh nonwoven fabrics as the upper and lower surface layers to improve the instantaneous absorption capacity, wherein cotton fibers and specially treated cotton fibers are combined with special-shaped ES fibers to construct a directional instantaneous absorption permeation channel, and the double W groove structure in the absorption layer is used to construct a high-speed infiltration and diffusion mechanism to improve the liquid diffusion efficiency and the diversion effect. At the same time, the absorption storage layer has a water-absorbing resin to absorb and store a large amount of liquid, so that the composite core can quickly absorb a large amount of liquid and reduce reverse osmosis, and at the same time can well inhibit liquid reverse osmosis; at the same time, the mesh holes of the upper and lower surface layers drive the air flow, and the first air permeable holes and the second air permeable holes of the absorption layer construct a breathable channel to accelerate the air circulation and take away water vapor, reduce the stuffiness and the growth of microorganisms, and keep the core dry. The overall composite core uses 3D mesh nonwoven fabrics as the upper and lower surface layers, and the hydrophilic fibers, hydrophobic fibers, and water-absorbing resins in the absorption layer absorb moisture to construct a one-layer complex network, so that the core is more stable and not easy to clump and break.

[0049] According to GB / T 24218.13-2010 Test methods for textile nonwovens Part 13: Determination of multiple liquid penetration time and GB / T 24218.14-2010 Test methods for textile nonwovens Part 14: Determination of rewetting amount of covering materials, to characterize its liquid penetration time and rewetting amount;

[0050]

[0051] Cotton fibers and specially treated cotton fibers are combed laterally at intervals, and a U-shaped structure is constructed with the ES fiber bundle warp knitting process to prepare a 3D mesh non-woven fabric, forming a directional vertical infiltration that quickly infiltrates through the capillary effect of the ES fiber bundle. At the same time, the non-woven fabric treated with a special finishing agent has a penetration-promoting effect and improves the directional instantaneous absorption capacity of the liquid. The cotton fibers after the finishing treatment have a certain hydrophobicity that reduces reverse osmosis.

[0052] According to "QB / T 5650-2021 Composite Absorbent Core for Disposable Paper Hygiene Products", after completing the rewet test, the longest liquid diffusion length is measured to calculate the ratio to the total length. According to the moisture permeability test method (the experimental environment is in a constant temperature and humidity room, dry silica gel is spread flat in a closed experimental box and weighed m1, 80ml of normal saline at (35±2)℃ is added to the core, and the core temperature is measured and recorded T1, the soaked core is placed in the test box for 10 minutes, the silica gel mass m2 is taken out and weighed, the core temperature is recorded T2, and the moisture permeability m=m2-m1 is calculated), the absorbent core is tested to characterize its absorption time, rewet amount, diffusion length, and moisture permeability;

[0053]

[0054] 3D mesh nonwoven fabric is used as the wrapping layer. Cotton fiber and specially treated cotton fiber make the surface layer have a certain hydrophobicity. Special-shaped ES fiber is used to construct a directional instantaneous absorption penetration channel, so that the liquid can penetrate quickly without staying on the surface and the reverse osmosis is low. The double W groove structure of the absorption layer can quickly guide and diffuse a large amount of liquid, improve the liquid diffusion efficiency and diversion effect, and the liquid storage area is set at the W groove position to quickly lock water and inhibit reverse osmosis. The first and second ventilation holes are used to drive air flow, accelerate air circulation and take away water vapor, improve the moisture permeability of the composite core, reduce the feeling of stuffiness and make the core more dry.

[0055] The present invention is described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of ordinary technicians in the field without departing from the purpose of the present invention. Many other changes and modifications that do not depart from the concept and scope of the present invention should be regarded as the protection scope of the present invention.

[0056] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0057] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A composite absorbent core, characterized in that: The absorbent core at least comprises an absorbent layer, wherein the absorbent layer comprises an upper layer and a lower layer; Wherein, the cross-section of the upper layer and / or the lower layer is V-shaped or W-shaped.

2. The composite absorbent core according to claim 1, characterized in that: The upper layer and the lower layer of the absorption layer are both W-shaped, the interval of the W-shaped of the upper layer is smaller than the interval of the W-shaped of the lower layer; the height of the W-shaped of the upper layer is smaller than the height of the W-shaped of the lower layer.

3. The composite absorbent core according to claim 1, characterized in that: A wrapping layer is arranged outside the absorption layer, and the wrapping layer at least includes an upper surface layer and a lower surface layer, wherein the upper surface layer and the lower surface layer are made of 3D mesh nonwoven fabric; The 3D mesh nonwoven fabric comprises an upper fiber web and a lower fiber web; a plurality of fiber bundles are connected between the upper fiber web and the lower fiber web by a warp knitting process to form a U-shaped fiber bundle structure.

4. The composite absorbent core according to claim 3, characterized in that: The fiber bundle is made of special-shaped fibers, and the special-shaped fibers are hollow-shaped, Y-shaped, double-cross-shaped, and M-shaped.

5. The composite absorbent core according to claim 3, characterized in that: The upper fiber web is formed by mixing untreated cotton fibers and specially treated cotton fibers and combing them in a directional and transversely spaced manner; The lower fiber web is made of specially treated cotton fibers and artificial muscle fibers that are cross-combed horizontally and vertically; the longitudinal fibers in the lower fiber web are treated cotton fibers; the transverse fibers in the lower fiber web are artificial muscle fibers, which expand and contract when wet and drive the upper fiber web to bend to fit the body and prevent liquid leakage, while enlarging the openings on the middle fiber bundles.

6. The composite absorbent core according to claim 3, characterized in that: The specially treated cotton fibers are fibers treated with a fast penetrating finishing agent; The fast penetrating finishing agent comprises the following raw materials in parts by weight: 10-20 parts of polysiloxane compound, 10-20 parts of fatty alcohol polyoxyethylene ether, 1-10 parts of azone or lauryl azone, 0.5-1 parts of basic amino acid and 100-200 parts of deionized water.

7. The composite absorbent core according to claim 3, characterized in that: The wrapping layer further comprises a side edge, and a plurality of through holes are arranged on the side edge of the wrapping layer.

8. A method for preparing a composite absorbent core, characterized in that: The method comprises the following steps: 1) preparing an upper layer and a lower layer of an absorption layer; 2) preparing a wrapping layer; The wrapping layer at least comprises an upper surface layer and a lower surface layer, wherein the upper surface layer and the lower surface layer are made of 3D mesh nonwoven fabric; The 3D mesh nonwoven fabric is composed of an upper fiber web and a lower fiber web; a plurality of fiber bundles are connected between the upper fiber web and the lower fiber web by warp knitting technology to form a U-shaped fiber bundle structure; wherein The upper fiber web is made of untreated cotton fibers and specially treated cotton fibers mixed and oriented and combed transversely at intervals; The lower fiber web is made of specially treated cotton fibers and artificial muscle fibers that are cross-combed horizontally and vertically; the longitudinal fibers in the lower fiber web are treated cotton fibers; the transverse fibers in the lower fiber web are artificial muscle fibers, which expand and contract when wet and drive the upper fiber web to bend to fit the body and prevent liquid leakage, while enlarging the openings on the middle fiber bundles.

9. The method for preparing a composite absorbent core according to claim 8, characterized in that: The specially treated cotton fibers are fibers treated with a fast penetrating finishing agent; Take the following raw materials in parts by weight: 10-20 parts of polysiloxane compound, 10-20 parts of fatty alcohol polyoxyethylene ether, 1-10 parts of azone or lauryl azone, 0.5-1 parts of basic amino acid, and 100-200 parts of deionized water; The polysiloxane compound is mixed with the fatty alcohol polyoxyethylene ether, and nonionic surfactants such as azone or lauryl azone are added as emulsifiers and rapid penetrants. After mixing evenly, deionized water is added to emulsify and disperse it, and then alkaline amino acids are added to catalyze polymerization to prepare a microemulsion.

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