Soft magnetic floor and preparation method thereof

Abstract

The invention provides a soft magnetic floor and a preparation method of the soft magnetic floor, and relates to the technical field of floor processing. The soft magnetic floor comprises a floor body, the floor body comprises a UV coating, a wear-resistant layer, a color film layer, a first magnetic layer and a second magnetic layer which are sequentially arranged in a stacked mode, the second magnetic layer is used for being attached to the ground surface, and the UV coating is used for being exposed to the external environment. Due to the design of the first magnetic layer and the second magnetic layer, when the floor is paved, the floor is adsorbed on the ground containing iron powder, compared with other floors in the prior art, the floor is convenient and fast to pave, parts such as lock catches for installing the floor are omitted, construction is easy and convenient, dismounting is easy, the paving cost is reduced, and the floor can be repeatedly used.

Description

Technical Field

[0001] The present invention relates to the technical field of floor processing, and in particular to a soft magnetic floor and a preparation method of the soft magnetic floor. Background Art

[0002] Flooring is a commonly used decorative material, which is widely used in various places. However, with the improvement of people's living standards, the requirements for flooring are also increasing, and different functions are needed for different scenes. Traditional plastic composite flooring is mostly based on PVC. The existing PVC flooring is relatively mature, with excellent performance and good decorative effect. PVC flooring is widely used, such as indoor homes, hospitals, schools, office buildings, factories, public places, supermarkets, businesses, stadiums and other places. The general flooring on the market, whether it is plastic, wood or other materials, must be installed by pasting, embedding or nailing. Not only is the construction time-consuming, but it is also difficult to carry out when it is replaced, and it often even damages the structure of the original floor. Summary of the invention

[0003] The purpose of the present invention is to provide a soft magnetic floor and a method for preparing the soft magnetic floor, so as to improve the existing technology in which the floor must be installed by pasting, embedding or nailing, which is not only time-consuming, but also difficult to replace and even often destroys the structure of the original floor, thereby providing a floor that is easy and quick to install, simple to construct and easy to dismantle, and can be reused many times.

[0004] The embodiment of the present invention is achieved as follows:

[0005] In a first aspect, the present invention provides a soft magnetic floor, comprising:

[0006] The floor body comprises a UV coating, a wear-resistant layer, a color film layer, a first magnetic layer and a second magnetic layer which are stacked in sequence, the second magnetic layer is used to adhere to the ground surface, and the UV coating is used to be exposed to the external environment.

[0007] In an optional embodiment, main materials of the first magnetic layer include PVC resin, calcium carbonate and magnetic powder.

[0008] In an optional embodiment, the formula components of the first magnetic layer are PVC resin, plasticizer, calcium carbonate, stabilizer, additive, internal lubricant 6A, external lubricant PE wax and magnetic powder:

[0009] Among them, the formula ratio is 30-40 parts of PVC resin, 5-15 parts of plasticizer, 30-50 parts of calcium carbonate, 0.5-1.0 parts of stabilizer, 0.5-1.0 parts of additives, 0.1-0.5 parts of internal lubricant 6A, 0.1-0.5 parts of external lubricant PE wax, and 10-15 parts of magnetic powder.

[0010] In an optional embodiment, main materials of the second magnetic layer include PVC resin, plasticizer and calcium carbonate.

[0011] In an optional embodiment, the formula components of the second magnetic layer are PVC resin, plasticizer, calcium carbonate, stabilizer, processing aid, internal lubricant 6A, external lubricant PE wax and magnetic powder:

[0012] Among them, the formula ratio is 20-50 parts of PVC resin, 20-50 parts of plasticizer, 20-50 parts of calcium carbonate, 0.5-1.0 parts of stabilizer, 0.5-1.0 parts of processing aid, 0.1-0.5 parts of internal lubricant 6A, 0.1-0.5 parts of external lubricant PE wax, and 10-15 parts of magnetic powder.

[0013] In an optional embodiment, the magnetic powder is set to be a mixture of CrO6 and Fe2O3.

[0014] In a second aspect, the present invention provides a method for preparing the soft magnetic floor described in the aforementioned embodiment, comprising:

[0015] Step s100, adding the PVC resin, calcium carbonate, magnetic powder and 1 / 2 of the plasticizer to be added in the first magnetic layer formula raw materials into a mixer and stirring for 1-2 minutes, and then adding the stabilizer, processing aid, internal lubricant 6A, external lubricant PE wax and the remaining 1 / 2 of the plasticizer to be added after the materials are preliminarily mixed; starting the mixer again, and when the temperature rises to 125-145° C. and the mixture is mixed to a semi-plasticized state, reducing the stirring speed for cooling and stirring, and obtaining the first mixture after cooling;

[0016] Add the PVC resin, calcium carbonate, magnetic powder and 1 / 2 of the required plasticizer in the second magnetic layer formula raw materials into a mixer and stir for 1-2 minutes. After the materials are preliminarily mixed, add the stabilizer, processing aid, internal lubricant 6A, external lubricant PE wax and the remaining 1 / 2 of the required plasticizer; start the mixer again, and when the temperature rises to 125-145°C and the mixture is mixed to a semi-plasticized state, add the mixture into a low-speed mixer for cooling and stirring, and obtain the second mixture after cooling;

[0017] Step s200, when the first mixture and the second mixture are cooled to 50-60°C, they are placed in the first storage bin and the second storage bin respectively, the first mixture is sent to the conical twin-screw extruder through the automatic feeding system, and the second mixture is sent to the parallel twin-screw extruder for extrusion processing, the extruded materials of the conical twin-screw extruder and the extruded materials of the parallel twin-screw extruder are distributed by the distributor and then enter the mold for composite extrusion to obtain a composite substrate.

[0018] In step s200, the barrel of the conical twin-screw extruder has five continuous temperature zones in the direction from the feed port to the discharge port, wherein the temperature of the first temperature zone is set to 195±10°C, the temperature of the second temperature zone is set to 190±10°C, the temperature of the third temperature zone is set to 185±10°C, the temperature of the fourth temperature zone is set to 180±10°C, and the temperature of the fifth temperature zone is set to 175±10°C.

[0019] In step s200, the barrel of the parallel twin-screw extruder has five continuous temperature zones in the direction from the feed port to the discharge port, wherein the temperature of the first temperature zone is set to 190±10°C, the temperature of the second temperature zone is set to 185±10°C, the temperature of the third temperature zone is set to 180±10°C, the temperature of the fourth temperature zone is set to 175±10°C, and the temperature of the fifth temperature zone is set to 170±10°C;

[0020] The mold temperature was set to 195±10°C.

[0021] After step s200, the method further includes:

[0022] Step s300, conveying the composite substrate to a multi-roll laminating device, and determining the thickness through the gap between the first roller and the second roller of the multi-roll laminating device; laminating the wear-resistant layer and the color film through the third roller of the multi-roll laminating device; calendering the board surface texture through the fourth roller of the multi-roll laminating device; calendering the back texture through the fifth roller of the multi-roll laminating device, wherein the temperature of the first roller, the second roller and the third roller is set to 195±10℃, and the temperature of the fourth roller and the fifth roller is set to 35±5℃ as cold rollers.

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

[0024] In summary, the soft magnetic bottom plate provided in this embodiment includes a UV coating, a wear-resistant layer, a color film layer, a first magnetic layer and a second magnetic layer arranged in layers from top to bottom, the second magnetic layer faces the ground, and the second magnetic layer contains magnetic material to adsorb the floor to the ground containing iron powder. Compared with other floors in the prior art, it is easy and quick to install, eliminates the need for locks and other parts for installing the floor, is simple to construct and easy to dismantle, reduces the installation cost, and can be reused many times. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 Schematic diagram of a soft magnetic floor according to an embodiment of the present invention.

[0027] icon:

[0028] 100-UV coating; 200-wear-resistant layer; 300-color film layer; 400-first magnetic layer; 500-second magnetic layer. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0033] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Figure 1 This is a schematic diagram of the layer structure of the soft magnetic floor provided in the embodiment of the present application. Figure 1 The soft magnetic floor includes a floor body, which includes a UV coating 100, a wear-resistant layer 200, a color film layer 300, a first magnetic layer 400 and a second magnetic layer 500 arranged in sequence. The second magnetic layer 500 is used to fit the ground surface, and the UV coating 100 is used to be exposed to the external environment. The thickness of the floor body can be set to 4-9mm.

[0036] Based on the above scheme, the soft magnetic floor includes a UV coating 100, a wear-resistant layer 200, a color film layer 300, a first magnetic layer 400 and a second magnetic layer 500 arranged in layers from top to bottom. The second magnetic layer 500 faces the ground and contains magnetic materials to adsorb the floor to the ground containing iron powder. Compared with other floors in the prior art, it is easy and quick to install, eliminates the need for locks and other parts for installing the floor, is simple to construct and easy to dismantle, reduces installation costs, and can be reused many times.

[0037] The following embodiments illustrate the details of the soft magnetic floor of the present application by way of examples.

[0038] In this embodiment, optionally, the floor body may be a strip-shaped board, which can reasonably utilize space and reduce material waste.

[0039] Optionally, the main materials of the first magnetic layer 400 include PVC resin, calcium carbonate and magnetic powder. Further, the formula components of the first magnetic layer 400 are PVC resin, plasticizer, calcium carbonate, stabilizer, auxiliary agent, internal lubricant 6A, external lubricant PE wax and magnetic powder: wherein, by weight, the formula ratio is 30-40 parts of PVC resin, 5-15 parts of plasticizer, 30-50 parts of calcium carbonate, 0.5-1.0 parts of stabilizer, 0.5-1.0 parts of auxiliary agent, 0.1-0.5 parts of internal lubricant 6A, 0.1-0.5 parts of external lubricant PE wax, and 10-15 parts of magnetic powder.

[0040] It should be understood that the first magnetic layer 400 has high plasticity, and the first magnetic layer 400 has good strength and flexibility. At the same time, the mesh size of calcium carbonate can be set to 400 meshes, and calcium carbonate plays a filling role, which can effectively improve stability. The stabilizer can be an environmentally friendly rare earth stabilizer or a composite stabilizer, and its main function is to inhibit the premature decomposition of polyvinyl chloride during processing, so that the formulation system has sufficient stability. The auxiliary agent can be auxiliary agent 401, which accelerates the plasticization process of PVC, improves the rheological properties of thermoplastic melts, and reduces the processing temperature. The internal lubricant can be an internal lubricant 6A, which reduces the internal friction of the melt, increases the melting rate and melt deformation of the plastic, reduces the melt viscosity and improves the plasticization performance. The external lubricant PE wax can improve the friction between the plastic melt and the barrel and the mold surface, reduce the friction between the two, and thus form a very thin isolation film between the melt and the barrel and the mold to prevent the plastic melt from sticking to the barrel or the mold surface. The magnetic powder can be a mixture of CrO6 and Fe2O3, which plays a paving magnetic attraction role.

[0041] In this embodiment, optionally, the main materials of the second magnetic layer 500 include PVC resin, plasticizer and calcium carbonate. Optionally, the formula components of the second magnetic layer 500 are PVC resin, plasticizer, calcium carbonate, stabilizer, processing aid, internal lubricant 6A, external lubricant PE wax and magnetic powder, wherein, by weight, the formula ratio is 20-50 parts of PVC resin, 20-50 parts of plasticizer, 20-50 parts of calcium carbonate, 0.5-1.0 parts of stabilizer, 0.5-1.0 parts of processing aid, 0.1-0.5 parts of internal lubricant 6A, 0.1-0.5 parts of external lubricant PE wax, and 10-15 parts of magnetic powder.

[0042] It should be understood that the second magnetic layer 500 has high plasticity, and the second magnetic layer 500 has good strength and flexibility. At the same time, the mesh size of calcium carbonate can be set to 400 meshes, and calcium carbonate plays a filling role, which can effectively improve stability. The stabilizer can be an environmentally friendly rare earth stabilizer or a composite stabilizer, and its main function is to inhibit the premature decomposition of polyvinyl chloride during processing, so that the formulation system has sufficient stability. The auxiliary agent can be auxiliary agent 401, which accelerates the plasticization process of PVC and improves the rheological properties of thermoplastic melts. The internal lubricant can be an internal lubricant 6A, which reduces the internal friction of the melt, increases the melting rate and melt deformation of the plastic, reduces the melt viscosity and improves the plasticization performance. The external lubricant PE wax can improve the friction between the plastic melt and the barrel and the mold surface, reduce the friction between the two, and thus form a very thin isolation film between the melt and the barrel and the mold to prevent the plastic melt from sticking to the barrel or mold surface. The magnetic powder can be a mixture of CrO6 and Fe2O3, which plays a paving magnetic attraction role.

[0043] Wherein, the PVC resin may be SG5, and the plasticizer may be DOTP.

[0044] At the same time, this embodiment also provides a method for preparing a soft magnetic floor, which comprises the following steps:

[0045] Step s100, add the PVC resin, calcium carbonate, magnetic powder and 1 / 2 of the plasticizer to be added in the formula raw materials of the first magnetic layer 400 into a blender and stir for 1-2 minutes. After the materials are preliminarily mixed, add stabilizer, processing aid, internal lubricant 6A, external lubricant PE wax and the remaining 1 / 2 of the plasticizer to be added; start the blender again, and when the temperature rises to 125-145°C and the mixture is mixed to a semi-plasticized state, reduce the stirring speed for cooling and stirring, and obtain the first mixture after cooling.

[0046] The PVC resin, calcium carbonate, magnetic powder and 1 / 2 of the required plasticizer in the formula raw materials of the second magnetic layer 500 are added to the mixer and stirred for 1-2 minutes. After the materials are preliminarily mixed, stabilizer, processing aid, internal lubricant 6A, external lubricant PE wax and the remaining 1 / 2 of the required plasticizer are added; the mixer is started again, and when the temperature rises to 125-145°C and the mixture is mixed to a semi-plasticized state, the mixture is fed into a low-speed mixer for cooling and stirring, and the second mixture is obtained after cooling.

[0047] Step s200, when the first mixture and the second mixture are cooled to 50-60°C, they are placed in the first storage bin and the second storage bin respectively, the first mixture is sent to the conical twin-screw extruder through the automatic feeding system, and the second mixture is sent to the parallel twin-screw extruder for extrusion processing, the extruded materials of the conical twin-screw extruder and the extruded materials of the parallel twin-screw extruder are distributed by the distributor and then enter the mold for composite extrusion to obtain a composite substrate.

[0048] Step s300, conveying the composite substrate to a multi-roll laminating device, and determining the thickness through the gap between the first roller and the second roller of the multi-roll laminating device; laminating the wear-resistant layer 200 and the color film through the third roller of the multi-roll laminating device; calendering the board surface grain through the fourth roller of the multi-roll laminating device; calendering the back grain through the fifth roller of the multi-roll laminating device, wherein the temperature of the first roller, the second roller and the third roller is set to 195±10℃, and the temperature of the fourth roller and the fifth roller is set to 35±5℃ as cold rollers.

[0049] It should be noted that in step s200, the barrel of the conical twin-screw extruder has five continuous temperature zones in the direction from the feed port to the discharge port, wherein the temperature of the first temperature zone is set to 195±10°C, the temperature of the second temperature zone is set to 190±10°C, the temperature of the third temperature zone is set to 185±10°C, the temperature of the fourth temperature zone is set to 180±10°C, and the temperature of the fifth temperature zone is set to 175±10°C. The barrel of the parallel twin-screw extruder has five continuous temperature zones in the direction from the feed port to the discharge port, wherein the temperature of the first temperature zone is set to 190±10°C, the temperature of the second temperature zone is set to 185±10°C, the temperature of the third temperature zone is set to 180±10°C, the temperature of the fourth temperature zone is set to 175±10°C, and the temperature of the fifth temperature zone is set to 170±10°C. The mold temperature is set to 195±10°C.

[0050] It should be understood that in the process of preparing the first magnetic layer 400 and the second magnetic layer 500, the plasticizer of the first magnetic layer 400 and the second magnetic layer 500 is added twice, which can prevent the presence of raw materials due to uneven stirring during the material mixing process and make the material mixing more uniform. In addition, setting the multiple temperature zones of the barrel of the conical twin-screw extruder and the barrel of the parallel twin-screw extruder to a gradient type can reduce the wear of the screw barrel, improve the plasticization efficiency and avoid the occurrence of paste. In addition, the temperature of the four rollers and the five rollers is set to 35±5℃, that is, the temperature of the pressure roller is set to room temperature, which can better control the embossing depth and the embossing depth will not rebound.

[0051] The present application is further described below with reference to examples, which are intended only to illustrate the present application, but not to limit the present application.

[0052] Example

[0053] A method for preparing a soft magnetic floor comprises:

[0054] Add the PVC resin, calcium carbonate, magnetic powder and 1 / 2 of the required plasticizer in the first magnetic layer 400 formula raw materials into a mixer and stir for 1.5 minutes. After the materials are preliminarily mixed, add the stabilizer, processing aid, internal lubricant 6A, external lubricant PE wax and the remaining 1 / 2 of the required plasticizer. Start the mixer again. When the temperature rises to 135° C. and the mixture is mixed to a semi-plasticized state, reduce the stirring speed and cool and stir. After cooling, obtain the first mixture.

[0055] The PVC resin, calcium carbonate, magnetic powder and 1 / 2 of the required plasticizer in the formula raw materials of the second magnetic layer 500 are added to the mixer and stirred for 1.5 minutes. After the materials are preliminarily mixed, stabilizer, processing aid, internal lubricant 6A, external lubricant PE wax and the remaining 1 / 2 of the required plasticizer are added; the mixer is started again, and when the temperature rises to 135° C. and the mixture is mixed to a semi-plasticized state, the mixture is fed to a low-speed mixer for cooling and stirring, and a second mixture is obtained after cooling;

[0056] When the first mixed material and the second mixed material are cooled to 55°C, they are placed in the first storage bin and the second storage bin respectively, the first mixed material is fed into the conical twin-screw extruder through the automatic feeding system, and the second mixed material is fed into the parallel twin-screw extruder for extrusion processing, and the extruded materials of the conical twin-screw extruder and the extruded materials of the parallel twin-screw extruder are distributed by the distributor and then enter the mold for composite extrusion to obtain the composite substrate. The barrel of the conical twin-screw extruder has five continuous temperature zones in the direction from the feed port to the discharge port, wherein the temperature of the first temperature zone is set to 195°C, the temperature of the second temperature zone is set to 190°C, the temperature of the third temperature zone is set to 185°C, the temperature of the fourth temperature zone is set to 180°C, and the temperature of the fifth temperature zone is set to 175°C. The barrel of the parallel twin-screw extruder has five continuous temperature zones in the direction from the feed port to the discharge port, wherein the temperature of the first temperature zone is set to 190°C, the temperature of the second temperature zone is set to 185°C, the temperature of the third temperature zone is set to 180°C, the temperature of the fourth temperature zone is set to 175°C, and the temperature of the fifth temperature zone is set to 170°C. The mold temperature is set to 195°C.

[0057] The composite substrate is conveyed to the multi-roll laminating equipment, and the thickness is determined by the gap between the first roller and the second roller of the multi-roll laminating equipment; the wear-resistant layer 200 and the color film are laminated on the third roller of the multi-roll laminating equipment; the board surface pattern is calendered by the fourth roller of the multi-roll laminating equipment; the back pattern is calendered by the fifth roller of the multi-roll laminating equipment, wherein the temperature of the first roller, the second roller and the third roller is set to 195°C, and the temperature of the fourth roller and the fifth roller is set to 35°C as cold rollers.

[0058] Among them, the specific material of the floor body is shown in Table 1:

[0059] Table 1 Specific materials of the floor body

[0060]

[0061]

[0062] Experimental example

[0063] The properties of the soft magnetic floors provided in Examples 1 to 3 and the board provided in Comparative Example 1 are respectively tested as shown in Table 2 (wherein, Comparative Example 1 in Table 2 is a conventional PVC board):

[0064] Table 2 Properties of the board

[0065] Test items Example 1 Example 2 Example 3 Comparative Example 1 shrink(%) 0.05 0.04 0.06 0.09 Warpage(mm) 0.5 1.1 1.8 1.9

[0066] From the data in the table, it can be seen that the content of calcium carbonate component in the anti-warping layer is inversely proportional to the warping. The more calcium carbonate content, the worse the warping.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A soft magnetic floor, characterized in that: include: The floor body comprises a UV coating, a wear-resistant layer, a color film layer, a first magnetic layer and a second magnetic layer which are stacked in sequence, the second magnetic layer is used to adhere to the ground surface, and the UV coating is used to be exposed to the external environment.

2. The soft magnetic floor according to claim 1, characterized in that: The main materials of the first magnetic layer include PVC resin, calcium carbonate and magnetic powder.

3. The soft magnetic floor according to claim 2, characterized in that: The formula components of the first magnetic layer are PVC resin, plasticizer, calcium carbonate, stabilizer, additive, internal lubricant 6A, external lubricant PE wax and magnetic powder: Among them, according to weight parts, the formula ratio is 30-40 parts of PVC resin, 5-15 parts of plasticizer, 30-50 parts of calcium carbonate, 0.5-1.0 parts of stabilizer, 0.5-1.0 parts of additives, 0.1-0.5 parts of internal lubricant 6A, 0.1-0.5 parts of external lubricant PE wax, and 10-15 parts of magnetic powder.

4. The soft magnetic floor according to claim 3, characterized in that: Main materials of the second magnetic layer include PVC resin, plasticizer and calcium carbonate.

5. The soft magnetic floor according to claim 4, characterized in that: The formula components of the second magnetic layer are PVC resin, plasticizer, calcium carbonate, stabilizer, processing aid, internal lubricant 6A, external lubricant PE wax and magnetic powder: Among them, the formula ratio is 20-50 parts of PVC resin, 20-50 parts of plasticizer, 20-50 parts of calcium carbonate, 0.5-1.0 parts of stabilizer, 0.5-1.0 parts of processing aid, 0.1-0.5 parts of internal lubricant 6A, 0.1-0.5 parts of external lubricant PE wax, and 10-15 parts of magnetic powder.

6. The soft magnetic floor according to claim 5, characterized in that: The magnetic powder is set to be a mixture of CrO6 and Fe2O3.

7. A method for preparing the soft magnetic floor according to claim 5, characterized in that: include: Step s100, adding the PVC resin, calcium carbonate, magnetic powder and 1 / 2 of the plasticizer to be added in the first magnetic layer formula raw materials into a mixer and stirring for 1-2 minutes, and then adding the stabilizer, processing aid, internal lubricant 6A, external lubricant PE wax and the remaining 1 / 2 of the plasticizer to be added after the materials are preliminarily mixed; starting the mixer again, and when the temperature rises to 125-145° C. and the mixture is mixed to a semi-plasticized state, reducing the stirring speed for cooling and stirring, and obtaining the first mixture after cooling; Add the PVC resin, calcium carbonate, magnetic powder and 1 / 2 of the required plasticizer in the second magnetic layer formula raw materials into a mixer and stir for 1-2 minutes. After the materials are preliminarily mixed, add the stabilizer, processing aid, internal lubricant 6A, external lubricant PE wax and the remaining 1 / 2 of the required plasticizer; start the mixer again, and when the temperature rises to 125-145°C and the mixture is mixed to a semi-plasticized state, add the mixture into a low-speed mixer for cooling and stirring, and obtain the second mixture after cooling; Step s200, when the first mixture and the second mixture are cooled to 50-60°C, they are placed in the first storage bin and the second storage bin respectively, the first mixture is sent to the conical twin-screw extruder through the automatic feeding system, and the second mixture is sent to the parallel twin-screw extruder for extrusion processing, the extruded materials of the conical twin-screw extruder and the extruded materials of the parallel twin-screw extruder are distributed by the distributor and then enter the mold for composite extrusion to obtain a composite substrate.

8. The method for preparing the soft magnetic floor according to claim 7, characterized in that: In step s200, the barrel of the conical twin-screw extruder has five continuous temperature zones in the direction from the feed port to the discharge port, wherein the temperature of the first temperature zone is set to 195±10°C, the temperature of the second temperature zone is set to 190±10°C, the temperature of the third temperature zone is set to 185±10°C, the temperature of the fourth temperature zone is set to 180±10°C, and the temperature of the fifth temperature zone is set to 175±10°C.

9. The method for preparing the soft magnetic floor according to claim 7, characterized in that: In step s200, the barrel of the parallel twin-screw extruder has five continuous temperature zones in the direction from the feed port to the discharge port, wherein the temperature of the first temperature zone is set to 190±10°C, the temperature of the second temperature zone is set to 185±10°C, the temperature of the third temperature zone is set to 180±10°C, the temperature of the fourth temperature zone is set to 175±10°C, and the temperature of the fifth temperature zone is set to 170±10°C; The mold temperature was set to 195±10°C.

10. The method for preparing the soft magnetic floor according to claim 7, characterized in that: After step s200, the method further includes: Step s300, conveying the composite substrate to a multi-roll laminating device, determining the thickness through the gap between the first and second rollers of the multi-roll laminating device; laminating the wear-resistant layer and the color film through the third roller of the multi-roll laminating device; and rolling the board surface pattern through the fourth roller of the multi-roll laminating device; The back-grain calendering is performed by five rollers of the multi-roll laminating equipment, wherein the temperature of the first roller, the second roller and the third roller is set to 195±10°C, and the temperature of the fourth roller and the fifth roller is set to 35±5°C as cold rollers.

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