Preparation method and device of polyvinyl chloride synthetic leather and electronic equipment

Abstract

The invention discloses a preparation method and device of polyvinyl chloride synthetic leather and electronic equipment. The method comprises the steps that preparation raw materials are obtained, the preparation raw materials comprise a base material, a plasticizer and a functional auxiliary agent which meet the target proportion, the base material is a basic framework material of the polyvinyl chloride synthetic leather, the plasticizer is used for improving the flexibility of the polyvinyl chloride synthetic leather, and the functional auxiliary agent is used for improving the oxidation resistance and aging resistance of the polyvinyl chloride synthetic leather; controlling the mixing stirrer to stir the preparation raw materials to obtain a stirred mixed raw material; controlling an internal mixer to carry out internal mixing treatment on the mixed raw materials to obtain functional slurry; coating release paper with the functional slurry for pretreatment to obtain a polyvinyl chloride coating; the polyvinyl chloride coating, the polyurethane foam layer and the base cloth supporting layer are subjected to compounding treatment, and the compounded and formed polyvinyl chloride synthetic leather is obtained. The technical problem that the durability of the polyvinyl chloride synthetic leather is low is solved.

Description

Technical Field

[0001] This application relates to the field of composite materials, and more specifically, to a method, apparatus, and electronic equipment for preparing polyvinyl chloride synthetic leather. Background Technology

[0002] Currently, with the development of lightweighting and personalization in the automotive industry, synthetic leather has become one of the core materials in the field of vehicle interiors due to its excellent performance. Among them, polyvinyl chloride (PVC) synthetic leather is seeing a gradual increase in its use in vehicle interiors due to its advantages in touch, appearance, and cost.

[0003] In the existing technology, due to the special usage environment inside vehicles, existing polyvinyl chloride synthetic leather often has problems such as excessive odor and aging failure after long-term use, resulting in low durability of polyvinyl chloride synthetic leather.

[0004] There is currently no effective solution to the technical problem of low durability of polyvinyl chloride synthetic leather. Summary of the Invention

[0005] This application provides a method, apparatus, and electronic device for preparing polyvinyl chloride synthetic leather, so as to at least solve the technical problem of low durability of polyvinyl chloride synthetic leather.

[0006] According to one aspect of the embodiments of this application, a method for preparing polyvinyl chloride (PVC) synthetic leather is provided. The method may include: obtaining raw materials, wherein the raw materials include a substrate, a plasticizer, and functional additives in a target ratio, the substrate being the basic skeleton material of the PVC synthetic leather, the plasticizer being used to increase the flexibility of the PVC synthetic leather, and the functional additives being used to increase the oxidation resistance and aging resistance of the PVC synthetic leather; controlling a mixer to stir the raw materials to obtain a mixed raw material; controlling an internal mixer to internally mix the mixed raw material to obtain a functional slurry; coating the functional slurry onto release paper for pretreatment to obtain a PVC coating; and composite the PVC coating with a polyurethane foam layer and a base fabric support layer to obtain a composite-molded PVC synthetic leather, wherein the polyurethane foam layer is located between the PVC coating and the base fabric support layer.

[0007] Optionally, controlling the internal mixer to perform internal mixing treatment on the mixed raw materials to obtain a functional slurry includes: controlling the internal mixer to perform internal mixing treatment on the mixed raw materials at a first preset temperature and a first preset time to break up agglomerates in the mixed raw materials to obtain a functional slurry.

[0008] Optionally, pre-treating the release paper by coating the functional slurry with it to obtain a polyvinyl chloride coating includes: controlling the coating equipment to uniformly coat the release paper with the functional slurry to obtain a release paper with the slurry coating; controlling the drying equipment to dry the release paper with the slurry coating at a second preset temperature and for a second preset time to obtain a dried release paper with the slurry coating; and peeling the dried slurry coating off the release paper to obtain a polyvinyl chloride coating.

[0009] Optionally, in the process of uniformly coating the functional paste onto the release paper, the method may further include: adjusting the squeegee distance of the functional paste based on the target coating thickness of the paste coating in response to the functional paste being squeegeed onto the release paper; and adjusting the roller coating pressure of the functional paste based on the target coating thickness of the paste coating in response to the functional paste being roller coated onto the release paper.

[0010] Optionally, during the process of uniformly coating the functional paste onto the release paper, the method may further include: adjusting the coating speed of the functional paste based on a preset coating speed.

[0011] Optionally, the polyvinyl chloride coating is composited with a polyurethane foam layer and a base fabric support layer to obtain a composite-molded polyvinyl chloride synthetic leather. This includes: using a composite process to composite the polyvinyl chloride coating with a polyurethane foam layer and a base fabric support layer to obtain a composite-molded polyvinyl chloride synthetic leather, wherein the composite process includes at least flame lamination, water-based adhesive lamination, and hot melt adhesive lamination.

[0012] Optionally, the method further includes drying the polyvinyl chloride synthetic leather at a third preset temperature for a target duration.

[0013] According to one aspect of the embodiments of this application, an apparatus for preparing polyvinyl chloride (PVC) synthetic leather is provided. The apparatus may include: an acquisition unit for acquiring raw materials, wherein the raw materials include a substrate, a plasticizer, and functional additives in a target ratio, the substrate being the basic skeleton material of the PVC synthetic leather, the plasticizer being used to increase the flexibility of the PVC synthetic leather, and the functional additives being used to increase the oxidation resistance and aging resistance of the PVC synthetic leather; a stirring unit for controlling a mixer to stir the raw materials to obtain a mixed raw material; a mixing unit for controlling a mixer to perform mixing treatment on the mixed raw material to obtain a functional slurry; a coating unit for coating the functional slurry onto release paper for pretreatment to obtain a PVC coating; and a composite treatment unit for composite treatment of the PVC coating with a polyurethane foam layer and a base fabric support layer to obtain a composite-molded PVC synthetic leather, wherein the polyurethane foam layer is located between the PVC coating and the base fabric support layer.

[0014] According to another aspect of the embodiments of this application, a processor is also provided. This processor is used to run a program, wherein the program, when running, executes the method for preparing polyvinyl chloride synthetic leather according to the embodiments of this application.

[0015] According to another aspect of the embodiments of this application, an electronic device is also provided, including: a memory storing an executable program; and a processor for running the program, wherein the program executes the method for preparing polyvinyl chloride synthetic leather according to various embodiments of this application when it runs.

[0016] According to another aspect of the embodiments of this application, a computer-readable storage medium is also provided. This computer-readable storage medium includes a stored executable program, wherein, when the executable program is executed, it controls the device where the storage medium is located to perform the method for preparing polyvinyl chloride synthetic leather according to the embodiments of this application.

[0017] According to another aspect of the embodiments of this application, a computer program product is also provided. This computer program product includes a computer program that, when executed by a processor, implements the method for preparing polyvinyl chloride synthetic leather according to the embodiments of this application.

[0018] According to another aspect of the embodiments of this application, a computer program product is also provided. This computer program product may include a non-volatile computer-readable storage medium for storing a computer program, which, when executed by a processor, implements the method for preparing polyvinyl chloride synthetic leather as described in the embodiments of this application.

[0019] According to another aspect of the embodiments of this application, an embodiment of this application also provides a computer program. When executed by a processor, this computer program implements the method for preparing polyvinyl chloride synthetic leather described in the embodiments of this application above.

[0020] In this embodiment, the substrate, plasticizer, and functional additives in the target proportions are mixed using a mixer to obtain a mixed raw material. The mixed raw material is then internally mixed using a mixer to obtain a functional slurry. The functional slurry is coated onto release paper for pretreatment to obtain a polyvinyl chloride (PVC) coating. Finally, the PVC coating is composited with polyurethane foam and a base fabric support layer to obtain a composite-molded PVC synthetic leather. In other words, in this embodiment, by mixing, mixing, internally mixing, and pretreatment of the substrate, plasticizer, and functional additives in the target proportions, a PVC coating can be obtained. The PVC coating is then composited with polyurethane foam and a base fabric support layer to obtain a composite-molded PVC synthetic leather. Because plasticizers and functional additives are added to the raw materials, the flexibility, oxidation resistance, and aging resistance of the PVC synthetic leather are increased. Furthermore, by combining the polyvinyl chloride coating with the polyurethane foam layer and the base fabric support layer, a structurally stable polyvinyl chloride synthetic leather can be formed, thereby improving the durability of the polyvinyl chloride synthetic leather and solving the technical problem of low durability of polyvinyl chloride synthetic leather. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0022] Figure 1 This is a flowchart of a method for preparing polyvinyl chloride synthetic leather according to an embodiment of this application;

[0023] Figure 2 This is a flowchart of a method for preparing a low-odor, aging-resistant polyvinyl chloride synthetic leather for vehicles according to an embodiment of this application;

[0024] Figure 3 This is a schematic diagram of a polyvinyl chloride synthetic leather preparation apparatus according to an embodiment of this application. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0027] According to an embodiment of this application, a method for preparing polyvinyl chloride synthetic leather is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than that shown here.

[0028] Figure 1 This is a flowchart of a method for preparing polyvinyl chloride synthetic leather according to an embodiment of this application, such as... Figure 1 As shown, the method may include the following steps.

[0029] Step S101: Obtain the raw materials for preparation.

[0030] In the technical solution provided by step S101 of this application, the raw materials for preparation may include a base material, a plasticizer, and a functional additive that meet the target ratio.

[0031] In this embodiment, the substrate can be the basic skeleton material of polyvinyl chloride synthetic leather. For example, the substrate can be polyvinyl chloride (PVC) resin, without specific limitations.

[0032] Optionally, the aforementioned plasticizer can be used to increase the flexibility of polyvinyl chloride synthetic leather. For example, the plasticizer can be a phthalate plasticizer or a citrate plasticizer, without specific limitations.

[0033] Optionally, the aforementioned functional additives can be used to increase the antioxidant and aging resistance of polyvinyl chloride synthetic leather. For example, functional additives may include, but are not limited to, composite antioxidants, heat stabilizers, and adsorbents. Among these, the composite antioxidant can be one or more of phenolic amines, phosphites, sulfides, and metal complexes used in combination; the heat stabilizer can be a calcium-zinc composite stabilizer or an organotin stabilizer; the adsorbent can be a physical adsorbent, such as activated carbon powder, modified silica gel, and zeolite molecular sieves, or a chemical adsorbent, such as activated alumina, metal-organic frameworks (MOFs), and covalent organic frameworks (COFs).

[0034] Optionally, the target ratio mentioned above can be used to represent the proportions of the base material, plasticizer, and functional additives used in the above-mentioned raw materials. For example, 80-100 parts of base material, 3-10 parts of plasticizer, 1-8 parts of composite antioxidant, 1-8 parts of heat stabilizer, and 1-8 parts of adsorbent may be selected. This is only an example and does not limit the specific value of the target ratio.

[0035] In the above steps, adding plasticizers and functional additives to the raw materials helps to improve the material's flexibility, antioxidant properties, and heat resistance.

[0036] Step S102: Control the mixer to stir the raw materials to obtain the stirred raw materials.

[0037] In the technical solution provided in step S102 of this application, after obtaining the raw materials, the raw materials are stirred using a mixer to obtain a mixed raw material.

[0038] In this embodiment, the mixer can be controlled to stir the raw materials according to a preset speed and a preset stirring time. For example, the preset speed can be 500 rpm / min-2000 rpm / min, and the preset stirring time can be 30 min-60 min. This is only an example and does not limit the specific values ​​of the preset speed and preset stirring time.

[0039] In the above steps, the raw materials are stirred by a mixer. The shear force of the mixer can be used to achieve uniform dispersion of each component in the raw materials, thereby obtaining a well mixed raw material and improving the reaction efficiency in the subsequent preparation of functional slurry.

[0040] Step S103: Control the internal mixer to perform internal mixing of the mixed raw materials to obtain functional slurry.

[0041] In the technical solution provided in step S103 of this application, after obtaining the mixed raw materials, the mixed raw materials are mixed using an internal mixer to obtain a functional slurry.

[0042] In this embodiment, the internal mixer can be used to fully mix the raw materials under high temperature and high pressure, thereby fully dispersing the components in the raw materials and obtaining a functional slurry with uniform texture, no particulate impurities, and fully dispersed functional components.

[0043] Step S104: The functional paste is coated onto the release paper for pretreatment to obtain a polyvinyl chloride coating.

[0044] In the technical solution provided by step S104 of this application, the pretreatment can be used to represent the processing operation of curing the functional slurry. For example, drying the functional coating.

[0045] In this embodiment, after obtaining the functional slurry, the functional slurry can be coated onto release paper for pretreatment to obtain a polyvinyl chloride coating.

[0046] For example, the coating equipment mentioned above can be a blade coating equipment or a roller coating equipment. When coating the functional paste onto the release paper, the functional paste can be uniformly coated onto the release paper by a blade coating equipment, or the functional paste can be uniformly rolled onto the release paper by a roller coating equipment.

[0047] Optionally, after the functional paste is coated onto the release paper, the functional paste coated on the release paper can be pretreated using a drying device. For example, the functional paste coated on the release paper can be heated and dried using a drying device to obtain a cured polyvinyl chloride coating.

[0048] In this step, by coating the functional paste onto the release paper and drying the release paper coated with the functional paste, the solvent in the functional paste can be rapidly evaporated, and the functional paste can be initially cross-linked and cured, thereby obtaining a polyvinyl chloride coating with a smooth surface and stable functional components.

[0049] Step S105: The polyvinyl chloride coating is composited with the polyurethane foam layer and the base fabric support layer to obtain a composite-molded polyvinyl chloride synthetic leather.

[0050] In the technical solution provided by step S105 of this application, the above-mentioned composite treatment can be used to refer to the process of bonding the polyvinyl chloride coating, the polyurethane foam layer, and the base fabric support layer together. For example, the polyvinyl chloride coating, the polyurethane foam layer, and the base fabric support layer can be bonded together by heating or adhesive bonding.

[0051] In this embodiment, after obtaining the polyvinyl chloride (PVC) coating, the PVC coating is composited with a polyurethane foam layer and a base fabric support layer to obtain a composite-molded PVC synthetic leather. For example, the PVC coating, polyurethane foam layer, and base fabric support layer can be composited by heating or adhesive bonding to obtain a composite-molded PVC synthetic leather.

[0052] Optionally, the polyvinyl chloride coating, the polyurethane foam layer, and the base fabric support layer are laminated sequentially according to a preset lamination order. For example, from the outside to the inside, the layers are polyvinyl chloride coating, polyurethane foam layer, and base fabric support layer, that is, the polyurethane foam layer is located between the polyvinyl chloride coating and the base fabric support layer.

[0053] Alternatively, the polyurethane foam layer can be made of a material with elastic recovery and deformation adaptability. For example, the polyurethane foam layer can be made of flexible polyurethane foam material.

[0054] Alternatively, the base fabric support layer can be made of a material with tensile strength, tear resistance, and dimensional stability. For example, the base fabric support layer can be a textile base fabric woven from polyester or nylon fibers.

[0055] In steps S101 to S105 above, a polyvinyl chloride (PVC) coating is obtained by mixing, stirring, kneading, and pre-treating the substrate, plasticizer, and functional additives in the target proportions. The PVC coating is then composited with polyurethane foam and a base fabric support layer to obtain a composite-molded PVC synthetic leather. The addition of plasticizers and functional additives to the raw materials increases the flexibility, oxidation resistance, and aging resistance of the PVC synthetic leather. Furthermore, by composited with the polyurethane foam layer and base fabric support layer, a structurally stable PVC synthetic leather is formed, achieving the technical effect of improving the durability of the PVC synthetic leather and thus solving the technical problem of low durability in PVC synthetic leather.

[0056] The method described in this embodiment will be further described below.

[0057] As an optional embodiment, step S103, controlling the internal mixer to perform internal mixing treatment on the mixed raw materials to obtain a functional slurry, includes: controlling the internal mixer to perform internal mixing treatment on the mixed raw materials at a first preset temperature and a first preset time to break down the agglomerates in the mixed raw materials to obtain a functional slurry.

[0058] In this embodiment, the aforementioned first preset temperature can be used to represent the temperature at which the mixed raw materials are subjected to internal mixing in a mixer. For example, the first preset temperature can be 120℃-150℃. The aforementioned first preset duration can be used to represent the length of time during which the mixed raw materials are subjected to internal mixing in a mixer. For example, the first preset duration can be 15min-30min. This is merely an illustrative example and does not limit the specific values ​​of the first preset temperature and the first preset duration.

[0059] Optionally, after obtaining the mixed raw materials, the internal mixer is controlled to perform internal mixing treatment on the mixed raw materials at a first preset temperature and a first preset time to break up the agglomerates in the mixed raw materials, thereby obtaining a functional slurry. For example, by utilizing the synergistic effect of the heat and shear force of the internal mixer, agglomerates in the mixed raw materials can be broken up, thereby forming a functional slurry with uniform texture, no particulate impurities, and fully dispersed functional components, thus achieving the technical effect of improving the uniformity of the functional slurry.

[0060] As an optional embodiment, step S104, which involves coating the functional slurry onto the release paper for pretreatment to obtain a polyvinyl chloride coating, includes: controlling a coating device to uniformly coat the functional slurry onto the release paper to obtain a release paper with a slurry coating; controlling a drying device to dry the release paper with the slurry coating at a second preset temperature and for a second preset time to obtain a dried release paper with the slurry coating; and peeling the dried slurry coating off the release paper to obtain a polyvinyl chloride coating.

[0061] In this embodiment, the aforementioned second preset temperature can be used to represent the temperature conditions when drying the release paper with the slurry coating using a drying device. For example, the second preset temperature can be 100℃-160℃. The aforementioned second preset duration can be used to represent the length of time when drying the release paper with the slurry coating using a drying device. For example, the second preset duration can be 70s-90s. This is merely an example and does not limit the specific values ​​of the second preset temperature and the second preset duration.

[0062] Optionally, after obtaining the functional slurry, the coating equipment is controlled to uniformly coat the functional slurry onto the release paper, thereby obtaining release paper with a slurry coating. For example, the functional slurry can be uniformly coated onto the release paper using a blade coating equipment or a roller coating equipment to obtain release paper with a slurry coating.

[0063] Optionally, after obtaining the release paper with the slurry coating, the drying equipment is controlled to dry the release paper with the slurry coating according to a second preset temperature and a second preset time to obtain the dried release paper with the slurry coating. For example, using a continuous drying equipment, the release paper with the slurry coating is dried in a hot air circulation environment at 100℃-160℃ for 70s-90s, which can cure the slurry coating, thereby obtaining the dried release paper with the slurry coating. This is only an example and does not limit the specific values ​​of the drying temperature and drying time.

[0064] Alternatively, after obtaining the dried release paper with the slurry coating, the dried slurry coating can be peeled off the release paper to obtain a polyvinyl chloride (PVC) coating. For example, the dried slurry coating can be peeled off the release paper manually or using a peeling machine to obtain the PVC coating.

[0065] In the above steps, a polyvinyl chloride (PVC) coating is obtained by coating the functional slurry onto release paper and then performing drying and peeling operations. Because this embodiment utilizes a drying device to dry and cure the functional slurry, it achieves the technical effect of improving the density of the PVC coating.

[0066] As an optional embodiment, in the process of uniformly coating the functional paste onto the release paper, the method further includes: adjusting the squeegee distance of the functional paste based on the target coating thickness of the paste coating in response to the functional paste being squeegeed onto the release paper; and adjusting the rolling pressure of the functional paste based on the target coating thickness of the paste coating in response to the functional paste being rolled onto the release paper.

[0067] In this embodiment, the target coating thickness can be used to represent the thickness of the functional paste on the release paper when the functional paste is coated onto the release paper. For example, the target coating thickness can be 0.2mm-0.5mm. This is only an example and does not limit the specific value of the target coating thickness.

[0068] Alternatively, the functional paste can be uniformly coated onto the release paper using coating equipment. For example, the functional paste can be applied to the release paper using a scraper coating device or a roller coating device.

[0069] Optionally, if the coating method is a blade coating method, during the process of applying the functional slurry to the release paper, the blade distance of the blade coating equipment can be adjusted based on the target coating thickness of the slurry coating. This ensures that the slurry coating on the release paper is controlled at the target thickness, thereby obtaining a PVC coating with uniform thickness. For example, by conducting preliminary experiments to obtain different coating thicknesses corresponding to different blade distances, a suitable blade distance can be selected during the process of applying the functional slurry to the release paper, based on the target coating thickness of the slurry coating.

[0070] Optionally, if the coating method used is roller coating, the roller coating pressure can be adjusted based on the target coating thickness during the process of roller coating the functional paste onto the release paper. This ensures that the paste coating on the release paper is controlled at the target thickness, resulting in a PVC coating with uniform thickness. For example, by conducting preliminary experiments to obtain different coating thicknesses corresponding to different roller coating pressures, an appropriate roller coating pressure can be selected based on the target coating thickness during the process of roller coating the functional paste onto the release paper.

[0071] In the above steps, during the process of coating the functional paste onto the release paper, the uniformity of the functional paste on the release paper can be improved by adjusting the squeegee distance or the roller coating pressure, thereby obtaining a polyvinyl chloride coating with uniform thickness.

[0072] As an optional embodiment, the method further includes adjusting the coating speed of the functional paste based on a preset coating speed during the process of uniformly coating the functional paste onto the release paper.

[0073] In this embodiment, the coating speed can be used to represent the rate at which the functional paste is coated onto the release paper using a coating device. For example, the preset coating speed can be 10 m / min to 40 m / min. This is merely an example and does not limit the specific value of the preset coating speed.

[0074] Optionally, during the process of uniformly coating the functional paste onto the release paper, the coating speed of the functional paste can be adjusted based on a preset coating speed. For example, when coating the functional paste onto the release paper using a coating device, the coating speed of the functional paste in the coating device can be set to a preset coating speed to ensure that the thickness of the paste coating is uniform, thereby improving the uniformity of the functional paste on the release paper and thus obtaining a polyvinyl chloride coating with uniform thickness.

[0075] As an optional embodiment, step S105 involves composite processing the polyvinyl chloride coating with the polyurethane foam layer and the base fabric support layer to obtain a composite-molded polyvinyl chloride synthetic leather, including: using a composite process to composite the polyvinyl chloride coating with the polyurethane foam layer and the base fabric support layer to obtain a composite-molded polyvinyl chloride synthetic leather.

[0076] In this embodiment, the above-mentioned composite process includes at least: flame lamination, water-based adhesive lamination, and hot melt adhesive lamination. Flame lamination utilizes flame heating to achieve interlayer micro-melting, thereby performing the lamination process; water-based adhesive lamination utilizes water-based adhesives to achieve interlayer bonding, thereby performing the lamination process; and hot melt adhesive lamination utilizes hot melt materials, which achieve interlayer bonding by heating and melting, thereby performing the lamination process.

[0077] Optionally, after obtaining the polyvinyl chloride (PVC) coating, a composite process can be used to combine the PVC coating with a polyurethane foam layer and a base fabric support layer to obtain a composite-molded PVC synthetic leather. For example, depending on actual production needs, any one or more of the following composite processes can be selected: flame lamination, water-based adhesive lamination, or hot melt adhesive lamination, to composite the PVC coating, polyurethane foam layer, and base fabric support layer to obtain a composite-molded PVC synthetic leather.

[0078] For example, when flame lamination is used, the surfaces of the polyvinyl chloride coating, polyurethane foam layer and base fabric support layer can be slightly melted by flame heating, thereby achieving interlayer fusion by utilizing intermolecular forces, and thus achieving a composite treatment with high bonding strength and no chemical additive residue.

[0079] For another example, when using water-based adhesives for lamination, environmentally friendly water-based polyurethane adhesive can be applied to the contact surfaces between the polyvinyl chloride coating, the polyurethane foam layer, and the base fabric support layer. Then, through steps such as pressing and curing, the interlayer bonding is achieved, thus achieving a composite treatment with good adhesion and environmental friendliness.

[0080] For another example, when using hot melt adhesive for lamination, a hot melt adhesive film can be used as the bonding medium. The hot melt adhesive film is placed between the polyvinyl chloride coating, the polyurethane foam layer, and the base fabric support layer. After the hot melt adhesive film is heated and melted, it is then cooled and cured to achieve interlayer bonding, thereby achieving a fast bonding speed for the lamination process.

[0081] Optionally, the polyvinyl chloride coating, polyurethane foam layer, and base fabric support layer can be laminated according to a preset pressing pressure and a preset lamination temperature. For example, the polyvinyl chloride coating, polyurethane foam layer, and base fabric support layer can be laminated at a pressing pressure of 0.3MPa-0.8MPa and a lamination temperature of 80℃-120℃. This is only an example and does not limit the specific values ​​of the preset pressing pressure and preset lamination temperature.

[0082] In the above steps, by composite processing the polyvinyl chloride coating, polyurethane foam layer and base fabric support layer, a structurally stable three-layer synthetic leather can be obtained, thereby achieving the technical effect of improving the bonding tightness between the layers of polyvinyl chloride synthetic leather.

[0083] As an optional embodiment, the method further includes drying the polyvinyl chloride synthetic leather at a third preset temperature for a target duration.

[0084] In this embodiment, the aforementioned third preset temperature can be used to represent the temperature at which the polyvinyl chloride synthetic leather is dried. For example, the third preset temperature can be 30℃-50℃. The aforementioned target duration can be used to represent the length of time during the drying process of the polyvinyl chloride synthetic leather. For example, the target duration can be 15min-25min. This is merely an illustrative example and does not limit the specific values ​​of the third preset temperature and the target duration.

[0085] Optionally, after obtaining the composite-molded polyvinyl chloride synthetic leather, the polyvinyl chloride synthetic leather can be dried at a third preset temperature for a target duration. For example, the composite-molded polyvinyl chloride synthetic leather can be placed in a constant temperature and ventilation drying room and continuously ventilated and dried at a drying temperature of 30℃-50℃ for 15min-25min. This is only an example and does not limit the specific values ​​of drying temperature and drying time.

[0086] In the above steps, by subjecting the composite-molded PVC synthetic leather to a constant-temperature drying process, residual solvents, moisture, and volatile odor substances can be removed, thereby reducing the odor of the PVC synthetic leather. Simultaneously, the constant-temperature drying process promotes further curing of the PVC coating, polyurethane foam layer, and base fabric support layer, thereby improving the interlayer bonding strength and overall material stability, ultimately enhancing the durability of the PVC synthetic leather.

[0087] In this embodiment, a polyvinyl chloride (PVC) coating is obtained by mixing, stirring, kneading, and pre-treating the substrate, plasticizer, and functional additives in a target ratio. The PVC coating is then composited with polyurethane foam and a base fabric support layer to obtain a composite-molded PVC synthetic leather. The addition of plasticizers and functional additives to the raw materials increases the flexibility, oxidation resistance, and aging resistance of the PVC synthetic leather. Furthermore, by composited with the polyurethane foam layer and base fabric support layer, a structurally stable PVC synthetic leather is formed, achieving the technical effect of improving the durability of the PVC synthetic leather and thus solving the technical problem of low durability in PVC synthetic leather.

[0088] The technical solutions of the embodiments of this application will be illustrated below with reference to preferred embodiments.

[0089] With the development of lightweighting and personalization in the automotive industry, synthetic leather has become one of the core materials in the field of vehicle interiors due to its superior performance. Among them, polyvinyl chloride (PVC) synthetic leather is gradually increasing its usage in vehicle interiors due to its advantages in touch, appearance, and cost. However, due to the special environment inside vehicles, existing PVC synthetic leather often suffers from excessive odor and aging and failure after long-term use. Therefore, there is a technical problem of low durability for PVC synthetic leather.

[0090] To address the aforementioned technical problems, this application proposes a method for preparing polyvinyl chloride (PVC) synthetic leather. By mixing, stirring, kneading, and pre-treating a target proportion of substrate, plasticizer, and functional additives, a PVC coating can be obtained. This PVC coating is then composited with polyurethane foam and a base fabric support layer to obtain a composite-molded PVC synthetic leather. The addition of plasticizers and functional additives to the raw materials increases the flexibility, oxidation resistance, and aging resistance of the PVC synthetic leather. Furthermore, by composited with the polyurethane foam layer and base fabric support layer, a structurally stable PVC synthetic leather can be formed, achieving a technical effect of improved durability and thus solving the technical problem of low durability in PVC synthetic leather.

[0091] Figure 2 This is a flowchart illustrating a method for preparing low-odor, aging-resistant polyvinyl chloride synthetic leather for vehicles according to an embodiment of this application. Figure 2 As shown, the method may include the following steps.

[0092] Step S201: Precisely prepare functional slurry.

[0093] In this embodiment, the raw materials are first proportioned according to the formula. For example, 80-100 parts of PVC resin are selected as the base material, 3-10 parts of phthalate or citrate plasticizers are selected, and corresponding parts of functional additives are selected. The corresponding parts of functional additives include: 1-8 parts of a composite antioxidant (e.g., one or more of phenolic amines, phosphites, sulfides, and metal complexes used in combination); 1-8 parts of a heat stabilizer (e.g., calcium-zinc composite stabilizer, or organotin stabilizer, etc.); and 1-8 parts of an adsorbent. The adsorbent can be a physical adsorbent (e.g., activated carbon powder, modified silica gel, and zeolite molecular sieves, etc.) or a chemical adsorbent (e.g., activated alumina, metal-organic frameworks (MOFs), and covalent organic frameworks (COFs, etc.).

[0094] Optionally, after the above raw materials are proportioned according to the formula, they can be mixed and stirred to obtain a mixed raw material. For example, the above raw materials can be added to a mixer in sequence, and the stirring speed can be controlled at 500 rpm / min-2000 rpm / min for 30-60 minutes to mix the raw materials. The shear force of the mixer is used to achieve the initial uniform dispersion of each raw material component.

[0095] Optionally, after obtaining the mixed raw materials, the mixed raw materials can be subjected to intensive mixing to obtain a functional slurry. For example, the mixed raw materials are fed into an intensive mixer, and the mixing temperature is controlled at 120℃-150℃ for 15min-30min. The synergistic effect of the heat and shear force of the intensive mixer breaks down agglomerates in the mixed raw materials, ensuring that the functional additives and the PVC resin matrix form a uniform and stable dispersion system, ultimately producing a low-odor, aging-resistant PVC functional slurry with uniform texture, no particulate impurities, and sufficient dispersion of functional components.

[0096] Step S202: The functional coating is applied and formed.

[0097] In this embodiment, after obtaining the functional slurry, it can be coated onto release paper to obtain release paper with a slurry coating. For example, a precision coating device can be used to uniformly coat the prepared PVC functional slurry onto the pretreated release paper by scraping or rolling. During the coating process, the scraper distance or rolling pressure is adjusted according to the target coating thickness (e.g., 0.2mm-0.5mm). Simultaneously, the coating speed is controlled at 10m / min-40m / min to ensure a uniform coating thickness and avoid defects such as missed coating or sagging.

[0098] Optionally, after obtaining the release paper with the slurry coating, the release paper with the slurry coating can be dried to obtain a molded functional coating. For example, the release paper with the slurry coating can be fed into a continuous drying equipment and dried in a hot air circulation environment at 100℃-160℃ for 70s-90s, so that the solvent in the slurry can evaporate quickly and complete the initial cross-linking and curing. After that, the dried slurry coating can be peeled off from the release paper to obtain a PVC functional coating with a smooth surface, soft touch, and stable functional components.

[0099] Step S203: Multi-layer composite molding.

[0100] In this embodiment, after obtaining the PVC functional coating, it can be sequentially laminated with a polyurethane foam layer and a high-strength base fabric layer to obtain a composite PVC synthetic leather preform. For example, after the PVC functional coating cools to room temperature, an environmentally friendly lamination process can be used to sequentially laminate the PVC functional coating with the polyurethane foam layer and the high-strength base fabric layer. The lamination process can be selected according to actual production needs, such as flame lamination, water-based adhesive lamination, or hot melt adhesive lamination. Among them, the flame lamination process can use flame to micro-melt the PVC functional coating and the surface of the foam layer, and achieve interface fusion by utilizing intermolecular forces, resulting in high bonding strength and no chemical additive residues; the water-based adhesive lamination process can use environmentally friendly water-based polyurethane adhesive, and achieve interlayer bonding through the steps of applying adhesive, pressing, and curing, which is green, environmentally friendly, and has good adhesion; the hot melt adhesive lamination process can use hot melt adhesive film as the bonding medium, which is heated and melted and then cooled and cured to achieve rapid lamination.

[0101] Optionally, during the lamination process, the pressing pressure can be controlled at 0.3MPa-0.8MPa and the lamination temperature at 80℃-120℃ to ensure that the layers are tightly bonded together without bubbles, delamination, peeling, or other phenomena, thereby forming a structurally stable three-layer composite leather blank.

[0102] Step S204: Optimization of post-processing of finished products.

[0103] In this embodiment, after obtaining the composite-molded PVC synthetic leather blank, post-processing optimization can be performed on the composite-molded PVC synthetic leather blank to obtain the finished PVC synthetic leather product. For example, the composite-molded PVC synthetic leather blank is sent to a constant temperature and ventilation drying room and continuously ventilated and dried at an environment of 30℃-50℃ for 15min-25min. Through post-processing, residual solvents, moisture, and a small amount of volatile odor substances in the PVC synthetic leather blank can be removed, further reducing the odor release of the finished product. At the same time, it can also promote the subsequent curing of the coating and adhesive layer, improving the interlayer bonding strength and the overall stability of the material.

[0104] Optionally, after post-processing the PVC synthetic leather blank, further processes such as trimming and inspection can be performed to remove substandard products, ultimately yielding a low-odor, aging-resistant, and structurally stable finished PVC synthetic leather product for automobiles.

[0105] In steps S201 to S204 above, the raw materials are proportioned according to the formula ratio, and the proportioned raw materials are mixed, stirred and kneaded to obtain a functional slurry; the functional slurry is coated on release paper and dried to obtain a molded PVC functional coating; the PVC functional coating is then laminated with a polyurethane foam layer and a high-strength base fabric layer in sequence to obtain a composite molded PVC synthetic leather blank; finally, the composite molded PVC synthetic leather blank is dried and optimized to obtain the final PVC synthetic leather product, thereby solving the technical problem of low durability of PVC synthetic leather and achieving the technical effect of improving the durability of PVC synthetic leather.

[0106] Below, comparative experiments will be conducted to... Figure 2 The method shown will be further illustrated with examples.

[0107] Example 1: PVC resin, plasticizer, antioxidant, heat stabilizer, and adsorbent were added to a mixer and stirred at 500 rpm for 30 minutes. Then, the mixture was transferred to an internal mixer for intensive mixing to obtain a uniformly dispersed, low-odor, aging-resistant PVC functional slurry. The slurry contained 90 parts PVC resin, 5 parts plasticizer, 1 part antioxidant, 1 part heat stabilizer, and 3 parts adsorbent. The plasticizer was diisononyl cyclohexane-1,2-dicarboxylate, the antioxidant was phosphite, the heat stabilizer was calcium-zinc stabilizer, and the adsorbent was MOF particles. The PVC functional slurry was uniformly coated onto release paper using a scraping or rolling method and dried at 100°C for 70 seconds, with the scraping or rolling speed controlled at 10 m / min, to form a PVC functional coating. A water-based adhesive lamination process was used to sequentially laminate the PVC functional coating with the foam layer and the base fabric layer, ensuring a tight, non-peeling bond between the layers to obtain the laminated PVC synthetic leather preform. The composite PVC synthetic leather blank is placed in a 50℃ environment and dried in a ventilated environment for 20 minutes to remove residual odor and moisture, and finally the PVC synthetic leather product is obtained.

[0108] Example 2: PVC resin, plasticizer, antioxidant, heat stabilizer, and adsorbent were added to a mixer and stirred at 1000 rpm for 50 minutes. Then, the mixture was transferred to an internal mixer for intensive mixing to obtain a uniformly dispersed, low-odor, aging-resistant PVC functional slurry. The slurry contained 90 parts PVC resin, 3 parts plasticizer, 5 parts antioxidant, 1 part heat stabilizer, and 1 part adsorbent. The plasticizer was diisononyl cyclohexane-1,2-dicarboxylate, the antioxidant was phosphite, the heat stabilizer was calcium-zinc stabilizer, and the adsorbent was MOF particles. The PVC functional slurry was uniformly coated onto release paper using a scraping or rolling method and dried at 120°C for 80 seconds, with the scraping or rolling speed controlled at 30 m / min, to form a PVC functional coating. A water-based adhesive lamination process was used to sequentially laminate the PVC functional coating with the foam layer and the base fabric layer, ensuring a tight, non-peeling bond between the layers to obtain the laminated PVC synthetic leather preform. The composite PVC synthetic leather blank is placed in a 50℃ environment and dried in a ventilated environment for 20 minutes to remove residual odor and moisture, and finally the PVC synthetic leather product is obtained.

[0109] Example 3: PVC resin, plasticizer, antioxidant, heat stabilizer, and adsorbent were added to a mixer and stirred at 1000 rpm for 50 minutes. Then, the mixture was transferred to an internal mixer for intensive mixing to obtain a uniformly dispersed, low-odor, aging-resistant PVC functional slurry. The slurry contained 80 parts PVC resin, 5 parts plasticizer, 5 parts antioxidant, 5 parts heat stabilizer, and 5 parts adsorbent. The plasticizer was diisononyl cyclohexane-1,2-dicarboxylate; the antioxidants were hindered phenols and phosphites; the heat stabilizer was a calcium-zinc stabilizer; and the adsorbent was MOF particles. The PVC functional slurry was uniformly coated onto release paper using a scraping or rolling method and dried at 120°C for 80 seconds, with the scraping or rolling speed controlled at 30 m / min, to form a PVC functional coating. A water-based adhesive lamination process was used to sequentially laminate the PVC functional coating with the foam layer and the base fabric layer, ensuring a tight, non-peeling bond between the layers to obtain the laminated PVC synthetic leather preform. The composite PVC synthetic leather blank is placed in a 50℃ environment and dried in a ventilated environment for 20 minutes to remove residual odor and moisture, and finally the PVC synthetic leather product is obtained.

[0110] Comparative Example 1: PVC resin, plasticizer, and heat stabilizer were added to a mixer and stirred at 1000 rpm for 50 minutes. Then, the mixture was transferred to an internal mixer for intensive mixing to obtain a uniformly dispersed PVC functional slurry. The slurry contained 90 parts PVC resin, 5 parts plasticizer, and 5 parts heat stabilizer; the plasticizer was diisononyl cyclohexane-1,2-dicarboxylate, and the heat stabilizer was calcium-zinc stabilizer. The PVC functional slurry was uniformly coated onto release paper using a scraping or rolling method, and dried at 120°C for 80 seconds, with the scraping or rolling speed controlled at 30 m / min, to form a PVC functional coating. A water-based adhesive lamination process was used to sequentially laminate the PVC functional coating with the foam layer and the base fabric layer, ensuring a tight bond between the layers without peeling, resulting in a laminated PVC synthetic leather preform. The laminated PVC synthetic leather preform was then placed in a 50°C environment for ventilation and drying for 20 minutes to remove residual odor and moisture, finally yielding the finished PVC synthetic leather product.

[0111] In this comparative experiment, the various indicators of the PVC synthetic leather products obtained from Experiment 1, Experiment 2, Experiment 3 and Comparative Example 1 were tested and scored respectively. The testing standards and scoring methods used for each indicator are as follows.

[0112] (1) Color fastness GBT250-2008 Textiles - Tests for color fastness - Gray scale for assessing color change;

[0113] (2) Lightfastness GB / T32088-2015 Accelerated Aging Test Method for Non-metallic Components and Materials of Automobiles under Xenon Lamp;

[0114] (3) Tensile strength QB / T·2710-2018·Leather·Physical and mechanical tests·Determination of tensile strength and elongation;

[0115] (4) Odor evaluation: Before the odor test, the sample is placed in an odor bottle and pretreated for 24 hours according to the requirements of GB / T2918-2018. The odor bottle is then placed in an electric heating drying oven at a temperature of (23±2)℃ and a relative humidity of (50±10)%RH. The lower the odor evaluation score, the milder the odor and the less irritating it is to the human body.

[0116] Table 1 is a comparative test result table according to an embodiment of this application. Table 1 below shows the test results of tensile strength, lightfastness, color fastness, odor and odor direction in Test 1, Test Example 2, Test Example 3 and Comparative Example 1.

[0117] Table 1 Comparative Test Results

[0118]

[0119] As shown in Table 1 above, the increased plasticizer content improves the tensile strength of PVC synthetic leather products; the use of antioxidants significantly improves their lightfastness; the increased PVC resin content improves their colorfastness; and the use of adsorbents significantly improves their odor. Therefore, in actual production, PVC synthetic leather can be prepared according to different raw material ratios based on varying application requirements, thus solving the technical problem of low durability in PVC synthetic leather and achieving the technical effect of improving its durability.

[0120] According to an embodiment of this application, an apparatus for preparing polyvinyl chloride synthetic leather is also provided. It should be noted that the apparatus for preparing polyvinyl chloride synthetic leather can be used to perform a method for preparing polyvinyl chloride synthetic leather according to an embodiment of this application.

[0121] Figure 3 This is a schematic diagram of a polyvinyl chloride synthetic leather preparation apparatus according to an embodiment of this application. Figure 3 As shown, the polyvinyl chloride synthetic leather preparation apparatus 300 may include: a collection unit 301, a stirring unit 302, a mixing unit 303, a coating unit 304, and a composite processing unit 305.

[0122] The acquisition unit 301 is used to acquire the preparation raw materials, wherein the preparation raw materials include a base material, a plasticizer and functional additives that meet the target ratio. The base material is the basic skeleton material of polyvinyl chloride synthetic leather, the plasticizer is used to increase the flexibility of polyvinyl chloride synthetic leather, and the functional additives are used to increase the oxidation resistance and aging resistance of polyvinyl chloride synthetic leather.

[0123] The stirring unit 302 is used to control the mixing mixer to stir the raw materials to obtain the mixed raw materials.

[0124] The mixing unit 303 is used to control the mixing machine to perform mixing treatment on the mixed raw materials to obtain functional slurry.

[0125] The coating unit 304 is used to pre-treat the functional paste onto the release paper to obtain a polyvinyl chloride coating.

[0126] The composite processing unit 305 is used to composite the polyvinyl chloride coating with the polyurethane foam layer and the base fabric support layer to obtain a composite molded polyvinyl chloride synthetic leather, wherein the polyurethane foam layer is located between the polyvinyl chloride coating and the base fabric support layer.

[0127] Optionally, the mixing unit 303 may include: a mixing module for controlling the mixing mill to perform mixing treatment on the mixed raw materials at a first preset temperature and a first preset time, so as to break down the agglomerates in the mixed raw materials and obtain a functional slurry.

[0128] Optionally, the coating unit 304 may include: a coating module for controlling the coating equipment to uniformly coat the functional slurry onto the release paper to obtain a release paper with a slurry coating; a drying module for controlling the drying equipment to dry the release paper with the slurry coating at a second preset temperature and for a second preset time to obtain a dried release paper with a slurry coating; and a peeling module for peeling the dried slurry coating off the release paper to obtain a polyvinyl chloride coating.

[0129] Optionally, the coating module may include: a first adjustment submodule for adjusting the blade distance of the functional paste based on the target coating thickness of the paste coating in response to the functional paste being scraped onto the release paper; and a second adjustment submodule for adjusting the roller coating pressure of the functional paste based on the target coating thickness of the paste coating in response to the functional paste being rolled onto the release paper.

[0130] Optionally, the coating module may also include a third adjustment submodule for adjusting the coating speed of the functional slurry based on a preset coating speed.

[0131] Optionally, the composite processing unit 305 may include: a composite module for using a composite process to composite a polyvinyl chloride coating with a polyurethane foam layer and a base fabric support layer to obtain a composite-molded polyvinyl chloride synthetic leather, wherein the composite process includes at least flame lamination, water-based adhesive lamination and hot melt adhesive lamination.

[0132] Optionally, the device further includes a drying unit for drying polyvinyl chloride synthetic leather for a target duration at a third preset temperature.

[0133] In the polyvinyl chloride (PVC) synthetic leather preparation apparatus of this application embodiment, a PVC coating is obtained by mixing, stirring, kneading, and pretreatment of a target proportion of substrate, plasticizer, and functional additives. The PVC coating is then composited with polyurethane foam and a base fabric support layer to obtain a composite-molded PVC synthetic leather. The addition of plasticizers and functional additives to the raw materials increases the flexibility, oxidation resistance, and aging resistance of the PVC synthetic leather. Furthermore, by composited with the PVC coating, polyurethane foam layer, and base fabric support layer, a structurally stable PVC synthetic leather is formed, achieving the technical effect of improving the durability of the PVC synthetic leather and thus solving the technical problem of low durability in PVC synthetic leather.

[0134] According to an embodiment of this application, a processor is also provided for running a program, wherein the program executes the method for preparing polyvinyl chloride synthetic leather in the embodiment.

[0135] According to an embodiment of this application, an electronic device is also provided, including: a memory storing an executable program; and a processor for running the program, wherein the program executes the method for preparing polyvinyl chloride synthetic leather in the embodiment during runtime.

[0136] In this application, "multiple" refers to two or more.

[0137] In this application, unless otherwise expressly defined, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0138] The terms “first,” “second,” “third,” “fourth,” etc., in this application (if present) are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0139] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0140] According to another aspect of the embodiments of this application, a computer-readable storage medium is also provided. This computer-readable storage medium includes a stored executable program, wherein, when the executable program is executed, it controls the device where the computer-readable storage medium is located to perform a method for preparing polyvinyl chloride synthetic leather according to the embodiments.

[0141] Computer-readable storage media, also known as computer storage media, may include data signals propagated in baseband or as part of a carrier wave, carrying readable program code. These propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable storage media can transmit, propagate, or transfer programs for use by or in conjunction with an instruction execution system, apparatus, or device.

[0142] The program code contained in a computer-readable storage medium may be transmitted using any suitable medium, including but not limited to wireless, wired, optical fiber, radio frequency, or any suitable combination thereof.

[0143] According to an embodiment of this application, a computer program product is also provided, which includes a computer program, wherein when the computer program is executed by a processor, it implements the method for preparing polyvinyl chloride synthetic leather in the embodiment.

[0144] According to an embodiment of this application, a computer program product is also provided, including a non-volatile computer-readable storage medium for storing a computer program. When the computer program is executed by a processor, it implements the method for preparing polyvinyl chloride synthetic leather in the embodiment.

[0145] According to an embodiment of this application, a computer program is also provided, which, when executed by a processor, implements the method for preparing polyvinyl chloride synthetic leather in the embodiment.

[0146] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0147] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0148] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through some interfaces; indirect couplings or communication connections between units or modules may be electrical or other forms.

[0149] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0150] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0151] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to related technologies, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard drive, magnetic disk, or optical disk.

[0152] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A method for preparing polyvinyl chloride synthetic leather, characterized in that, include: Obtain the preparation raw materials, wherein the preparation raw materials include a base material, a plasticizer, and functional additives in a target ratio, wherein the base material is the basic skeleton material of polyvinyl chloride synthetic leather, the plasticizer is used to increase the flexibility of the polyvinyl chloride synthetic leather, and the functional additives are used to increase the oxidation resistance and aging resistance of the polyvinyl chloride synthetic leather. The mixing machine is controlled to stir the raw materials to obtain a mixed raw material; The mixed raw materials are subjected to intensive mixing using an internal mixer to obtain a functional slurry; The functional slurry is coated onto release paper for pretreatment to obtain a polyvinyl chloride coating; The polyvinyl chloride coating is composited with a polyurethane foam layer and a base fabric support layer to obtain a composite-molded polyvinyl chloride synthetic leather, wherein the polyurethane foam layer is located between the polyvinyl chloride coating and the base fabric support layer.

2. The method according to claim 1, characterized in that, The mixed raw materials are subjected to internal mixing in a controlled internal mixer to obtain a functional slurry, comprising: The internal mixer is controlled to perform internal mixing treatment on the mixed raw materials according to a first preset temperature and a first preset time, so as to break down the agglomerates in the mixed raw materials and obtain the functional slurry.

3. The method according to claim 1, characterized in that, The functional slurry is coated onto release paper for pretreatment to obtain a polyvinyl chloride coating, comprising: The coating equipment is controlled to uniformly coat the functional slurry onto the release paper, thereby obtaining the release paper with a slurry coating. The drying equipment is controlled to dry the release paper with the slurry coating according to the second preset temperature and the second preset time, so as to obtain the dried release paper with the slurry coating. The dried slurry coating is peeled off from the release paper to obtain the polyvinyl chloride coating.

4. The method according to claim 3, characterized in that, The method further includes the following steps during the process of uniformly coating the functional paste onto the release paper: In response to the functional paste being applied to the release paper, the blade distance of the functional paste is adjusted based on the target coating thickness of the paste coating. In response to the functional paste being rolled onto the release paper, the rolling pressure of the functional paste is adjusted based on the target coating thickness of the paste coating.

5. The method according to claim 3, characterized in that, The method further includes the following steps during the process of uniformly coating the functional paste onto the release paper: The coating speed of the functional slurry is adjusted based on the preset coating speed.

6. The method according to claim 1, characterized in that, The polyvinyl chloride coating is composited with a polyurethane foam layer and a base fabric support layer to obtain a composite-molded polyvinyl chloride synthetic leather, comprising: The polyvinyl chloride coating is composited with the polyurethane foam layer and the base fabric support layer using a composite process to obtain the composite-molded polyvinyl chloride synthetic leather. The composite process includes at least flame bonding, water-based adhesive bonding, and hot melt adhesive bonding.

7. The method according to any one of claims 1 to 6, characterized in that, The method further includes: The target drying time for the polyvinyl chloride synthetic leather at the third preset temperature.

8. An apparatus for preparing polyvinyl chloride synthetic leather, characterized in that, include: The acquisition unit is used to acquire the preparation raw materials, wherein the preparation raw materials include a base material, a plasticizer, and functional additives in a target ratio, the base material is the basic skeleton material of polyvinyl chloride synthetic leather, the plasticizer is used to increase the flexibility of the polyvinyl chloride synthetic leather, and the functional additives are used to increase the oxidation resistance and aging resistance of the polyvinyl chloride synthetic leather. A stirring unit is used to control the mixing mixer to stir the raw materials to obtain a mixed raw material; The mixing unit is used to control the mixing mill to mix the mixed raw materials to obtain a functional slurry; A coating unit is used to coat the functional slurry onto release paper for pretreatment to obtain a polyvinyl chloride coating. A composite processing unit is used to composite the polyvinyl chloride coating with a polyurethane foam layer and a base fabric support layer to obtain a composite-molded polyvinyl chloride synthetic leather, wherein the polyurethane foam layer is located between the polyvinyl chloride coating and the base fabric support layer.

9. An electronic device, characterized in that, include: Memory, which stores executable programs; A processor for running the program, wherein the program, when running, performs the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored executable program, wherein, when the executable program is executed, it controls the device on which the storage medium is located to perform the method according to any one of claims 1 to 7.

11. A computer program product, characterized in that, Includes a computer program that, when executed by a processor, implements the method according to any one of claims 1 to 7.

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