Negative oxygen ion catalyzed SPC stone-plastic floor material and preparation method and equipment thereof

Abstract

The invention discloses a negative oxygen ion catalyzed SPC stone-plastic floor material and a preparation method and equipment thereof, and belongs to the technical field of stone-plastic floors, the negative oxygen ion catalyzed SPC stone-plastic floor material is prepared from polyvinyl chloride resin, ground calcium carbonate, nano titanium dioxide, tourmaline, nano magnesium oxide, a plasticizer, a lubricant, a surfactant and a stabilizer. According to preparation of the negative oxygen ion catalyzed SPC stone plastic floor material, porous anatase crystal type nano carbon dioxide particles doped with rare earth elements, tourmaline containing iron and manganese elements and nano magnesium oxide particles are added, so that the prepared negative oxygen ion catalyzed SPC stone plastic floor material has the function of releasing negative ions; the SPC stone-plastic flooring material has good air purification effect and good photocatalytic effect, overcomes the defects of low air purification effect and single function of the existing SPC stone-plastic flooring material, and is simple and feasible in preparation method and suitable for large-scale industrial production and application.

Description

Technical Field

[0001] The invention relates to the technical field of stone plastic flooring, in particular to a negative oxygen ion catalyzed SPC stone plastic flooring material and a preparation method and equipment thereof. Background Art

[0002] Stone plastic composite (SPC) is a new type of material made of stone powder (CaCO3) and polyvinyl chloride resin (PVC) as the main components, supplemented by a variety of additives, and extruded under high temperature and high pressure. Calcium carbonate is a white powder, crystalline, and has high hardness. PVC resin is light yellow or white powder, which contains highly polar chlorine atoms, and the interaction between molecules is strong, with high mechanical strength and hardness. Compared with traditional wood materials, SPC has excellent physical and chemical properties due to its combination of the multiple advantages of CaCO3 and PVC: high dimensional stability and small deformation; waterproof and corrosion-resistant, can be used in environments where traditional wood cannot be used; high hardness and wear resistance, greatly improving the service life of the product; green, environmentally friendly and renewable, SPC materials do not contain formaldehyde, benzene, etc., and can be recycled. At present, SPC stone plastic materials have been widely used in floor decoration and construction industries.

[0003] Although the market application rate of SPC flooring is gradually increasing due to the above advantages, compared with traditional tiles, the existing SPC flooring also has problems such as relatively high water absorption, easy to get damp and moldy, single function, and no anti-mildew and antibacterial function. Therefore, in view of the current status of the development and application of SPC flooring, it is very necessary to design an SPC flooring with high strength grade, good anti-slip performance, and good anti-mildew and antibacterial function.

[0004] In addition, the extrusion thickness of the extruder used to produce SPC stone plastic flooring in the prior art is limited by the size of the extrusion nozzle. When it is necessary to produce SPC stone plastic flooring of different thicknesses, the original extrusion nozzle needs to be removed and then the extrusion nozzle with the required opening size needs to be installed. The replacement process is relatively complicated and requires downtime, resulting in a waste of time and materials, and also reduces production efficiency. After a period of use, the extrusion nozzle will be worn and pressure damaged, so it is also necessary to have the characteristics of convenient replacement and maintenance. In view of this, the applicant has designed a corresponding extruder equipment to match the improved product and process. Summary of the invention

[0005] The purpose of the present invention is to solve the problems existing in the background technology, and to provide a SPC stone plastic floor material with high strength grade, good anti-slip performance and good mildew and antibacterial function, and a preparation method and equipment thereof.

[0006] To achieve the above object, the present invention provides the following technical solution: a negative oxygen ion catalyzed SPC stone plastic floor material, prepared from the following components in parts by weight: 80-160 parts of polyvinyl chloride resin; Heavy calcium carbonate 200-300 parts; 30-50 parts of nano titanium dioxide; Tourmaline 10-30 parts; 10-20 parts of nano magnesium oxide; 3-10 parts of plasticizer; 5-10 parts of lubricant; Surfactant 1-5 parts 1 to 3 parts of stabilizer.

[0007] As a further solution of the present invention: the heavy calcium carbonate is a heavy calcium carbonate with a whiteness greater than 90 and a fineness greater than 300 mesh; the nano titanium dioxide is a porous anatase crystal nano carbon dioxide particle doped with a soluble rare earth salt of cerium, lanthanum, praseodymium and yttrium, with a particle size of 30 to 50 nm; the tourmaline is a tourmaline containing iron and manganese elements, and the tourmaline has a particle size of 50-100 nm; the nano magnesium oxide particle has a particle size of 30 to 50 nm; the plasticizer is diisononyl phthalate; the lubricant is any one of polyethylene wax or chlorinated polyethylene, and the polyethylene wax is a high melting point polyethylene wax with a melting point higher than 105°C; the surfactant is a silane surfactant, and the stabilizer is a calcium-zinc composite stabilizer.

[0008] A method for preparing negative oxygen ion catalyzed SPC stone plastic floor material, comprising the following steps: Add polyvinyl chloride resin and heavy calcium carbonate into a mixer, heat and mix, and raise the temperature to 125-155°C; add the remaining raw materials in a proportion into the mixer, continue mixing for 5-10 minutes to obtain a mixed material; cool the mixed material to 45-65°C; add the cooled mixed material into an extruder for extrusion molding to obtain a substrate layer; hot-press the substrate layer and the decorative surface layer, and then perform board separation, curing, and slotting treatments; In the extrusion molding step, four temperature control zones are arranged in the extruder, and the temperatures are: 200℃~210℃ in zone 1, 210℃~230℃ in zone 2, 200℃~210℃ in zone 3, and 190℃~180℃ in zone 4. The mixed material passes through zones 1 to 4 in sequence.

[0009] A device for preparing negative oxygen ion catalytic SPC stone plastic floor material, the extruder includes an extruder body, the top of the extruder body is provided with a feed port, one end of the extruder body is provided with a connection port, one end of the connection port is installed with an extrusion die, one end of the extrusion die is installed with an extrusion plate, the outer wall of the extrusion plate is provided with an extrusion port, the extrusion plate is installed on the extrusion die through a mounting mechanism, the size of the extrusion port is adjusted by an adjustment mechanism, the mounting mechanism includes a C-shaped frame, the C-shaped frame is fixedly connected to the top of the extrusion plate, the outer wall of the C-shaped frame is provided with a slot, the top of the extrusion die is fixedly connected to A plug plate is connected to be inserted into the slot, and a support plate is fixedly connected to the bottom end of the extrusion die, a connecting groove is opened at one end of the extrusion die, and a fixing groove is opened on the inner wall of the connecting groove, and a connecting block is fixedly connected to the outer wall of one end of the extrusion plate, and a rotating block is rotatably connected to the outer wall of one end of the extrusion plate away from the connecting block, and a first threaded rod is fixedly connected to the outer wall of the rotating block, and a slider is connected to the outer wall of the first threaded rod, and the slider is slidably connected to the inside of the connecting block, and one end of the slider is rotatably connected to a connecting rod, and one end of the connecting rod is rotatably connected to a fixed block, and the fixed block is slidably connected to the inside of the connecting block and extends out of the connecting block.

[0010] As a further solution of the present invention: the adjustment mechanism includes an adjustment groove, the adjustment groove is opened on the outer wall of the extrusion plate and is located above the extrusion port, the inner wall of the adjustment groove is slidably connected with an adjustment plate, the outer walls on both sides of the adjustment plate are fixedly connected with side plates, a limit rod and a second threaded rod are respectively provided on both sides of the inner cavity of the C-shaped frame, the limit rod is fixedly connected to the extrusion plate, the second threaded rod is rotatably connected to the extrusion plate, the limit rod and the second threaded rod both pass through the side plate, the top end of the second threaded rod is located at the top end of the C-shaped frame and is fixedly connected to a toothed disk, and the top end of the C-shaped frame is located on one side of the toothed disk and is fixedly connected to a mounting The cam is provided with a toothed plate, the other end of which is rotatably connected to the cam, and the outer wall of the toothed plate is provided with a groove. The inner part of the toothed plate is provided with an extrusion rod, which is slidably connected to the side of the rotation column away from the positioning rod. The inner part of the C-shaped frame is provided with a spur gear which is rotatably connected to the bottom end of the extrusion rod. The inner part of the C-shaped frame is provided with a reinforcement rod which is slidably connected to the bottom end of the spur gear. A second spring is connected between the reinforcement rod and the C-shaped frame, and a reinforcement groove is provided on one side of the plug plate.

[0011] As a further solution of the present invention: the inner wall of the slot is in contact with the outer wall of the plug board, and the outer wall of the connecting block is in contact with the inner wall of the connecting groove.

[0012] As a further solution of the present invention: a first threaded hole is formed on an outer wall of the sliding block, the first threaded hole matches the first threaded rod, and the outer wall of the fixing block fits with the inner wall of the fixing groove.

[0013] As a further solution of the present invention: a limiting hole and a second threaded hole are respectively formed on the outer walls of the two side plates, the inner walls of the limiting holes are fitted with the outer walls of the limiting rods, and the second threaded rods match the second threaded holes.

[0014] As a further solution of the present invention: an outer wall at one end of the positioning rod is engaged with the toothed disc, and an outer wall at the other end of the positioning rod is in contact with an inner wall of the groove.

[0015] As a further solution of the present invention: a semicircular surface is provided at one end of the extrusion rod facing the rotating column, and the outer walls of the extrusion rod and the reinforcement rod are provided with tooth grooves, the tooth grooves are meshed with the spur gears, and the outer wall of one end of the reinforcement rod is in contact with the inner wall of the reinforcement groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The preparation of the negative oxygen ion catalyzed SPC stone plastic floor material of the present invention is added with porous anatase crystal nano carbon dioxide particles doped with rare earth elements, tourmaline containing iron and manganese elements and nano magnesium oxide particles. The SPC stone plastic floor material obtained by the preparation method of the present invention not only has the function of releasing negative ions, but also can purify the air with good photocatalytic effect under ultraviolet, visible light and micro-radiation conditions, overcoming the shortcomings of the current SPC stone plastic floor material with low air purification effect and single function. The preparation method is simple and easy, and is suitable for large-scale industrial production and application; 2. The present invention has designed a corresponding extruder to match the improved product and process. By setting up an installation mechanism and an adjustment mechanism, when adjusting the size of the extrusion port, the toothed disc is rotated, and the rotation of the toothed disc drives the second threaded rod to rotate. The rotation of the second threaded rod drives the adjustment plate to move through the side plate. The adjustment plate slides in the adjustment groove to adjust the opening size of the extrusion port, which is convenient for adjusting the opening size of the extrusion port, thereby adjusting the thickness of the extruded material. The adjustment process is simple and easy to operate, and there is no need to stop the machine to replace the extrusion plate; and there will be no waste of materials due to slipperiness, which saves production time and improves work efficiency. Once the extrusion plate and the extrusion port are damaged and need to be repaired, they can be easily disassembled and replaced, further reducing the production and maintenance costs of the extrusion operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the extruder of the present invention; Figure 2It is a schematic diagram of the installation of the extrusion plate of the extruder of the present invention; Figure 3 A partial cross-sectional view of an extrusion die of the extruder of the present invention; Figure 4 It is a structural schematic diagram of the extrusion plate of the extruder of the present invention; Figure 5 A cross-sectional view of a connecting block of the extruder of the present invention; Figure 6 It is a schematic diagram of the installation of the adjustment plate of the extruder of the present invention; Figure 7 A cross-sectional view of a C-shaped frame of the extruder of the present invention; Figure 8 It is a cross-sectional view of the rotating column of the extruder of the present invention.

[0018] In the figure: 1. extruder body; 2. feed port; 3. connection port; 4. extrusion die; 5. extrusion plate; 6. extrusion port; 7. mounting mechanism; 701. C-shaped frame; 702. slot; 703. plug plate; 704. support plate; 705. connecting groove; 706. fixing groove; 707. connecting block; 708. rotating block; 709. first threaded rod; 710. slider; 711. connecting rod; 712. fixing block; 8. adjusting mechanism; 801. adjusting groove; 802. adjusting plate; 803. side plate; 804. limiting rod; 805. second threaded rod; 806. toothed disc; 807. mounting seat; 808. positioning rod; 809. first spring; 810. rotating column; 811. groove; 812. extrusion rod; 813. spur gear; 814. reinforcing rod; 815. second spring; 816. reinforcing groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0020] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" 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 directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of an embodiment of the present invention based on the overall structure of the present invention.

[0021] Example 1: Preparation of Negative Oxygen Ion Catalyzed SPC Stone Plastic Flooring Material See also Figures 1 to 7 In an embodiment of the present invention, a negative oxygen ion catalyzed SPC stone plastic floor material is prepared from the following components in parts by weight: 80 parts of polyvinyl chloride resin; 250 parts of heavy calcium carbonate; 30 parts of nano titanium dioxide; Tourmaline 10 parts; 10 parts of nano magnesium oxide; 3 parts of plasticizer; 5 parts of lubricant; 1 part surfactant 1 part stabilizer.

[0022] Heavy calcium carbonate is heavy calcium carbonate with a whiteness greater than 90 and a fineness greater than 300 meshes; nano titanium dioxide is porous anatase crystal nano carbon dioxide particles doped with soluble rare earth salts of cerium, lanthanum, praseodymium and yttrium, with a particle size of 30nm; tourmaline is tourmaline containing iron and manganese elements, with a tourmaline particle size of 75nm; nano magnesium oxide particles have a particle size of 30nm; the plasticizer is diisononyl phthalate; the lubricant is polyethylene wax, and the polyethylene wax is a high-melting-point polyethylene wax with a melting point higher than 105°C; the surfactant is a silane surfactant, and the stabilizer is a calcium-zinc composite stabilizer.

[0023] A method for preparing negative oxygen ion catalyzed SPC stone plastic floor material, comprising the following steps: Add polyvinyl chloride resin and heavy calcium carbonate into a mixer, heat and mix, and raise the temperature to 125-155°C; add the remaining raw materials in a certain proportion into the mixer, continue mixing for 5-10 minutes to obtain a mixed material; cool the mixed material to 45-65°C; add the cooled mixed material into an extruder for extrusion molding to obtain a substrate layer; hot-press the substrate layer and the decorative surface layer, and then perform board separation, curing, and slotting treatments; In the extrusion molding step, the extruder is equipped with four temperature control zones, the temperatures of which are: Zone 1 200℃~210℃, Zone 2 210℃~230℃, Zone 3 200℃~210℃, Zone 4 190℃~180℃. The mixed material passes through Zones 1 to 4 in sequence. In this embodiment: the preparation of the negative oxygen ion catalyzed SPC stone plastic floor material of the present invention, porous anatase crystal nano carbon dioxide particles doped with rare earth elements, tourmaline containing iron and manganese elements and nano magnesium oxide particles are added, and the SPC stone plastic floor material obtained by the preparation method of the present invention not only has the function of releasing negative ions, but also can have a good photocatalytic effect of air purification under ultraviolet, visible light and micro-radiation conditions, overcoming the current SPC stone plastic floor material The shortcomings of low air purification effect and single function, the preparation method is simple and easy, and is suitable for large-scale industrial production and application.

[0024] A device for preparing negative oxygen ion catalytic SPC stone plastic floor material, the extruder includes an extruder body 1, a feed port 2 is arranged at the top of the extruder body 1, a connection port 3 is arranged at one end of the extruder body 1, an extrusion die 4 is installed at one end of the connection port 3, an extrusion plate 5 is installed at one end of the extrusion die 4, an extrusion port 6 is opened on the outer wall of the extrusion plate 5, the extrusion plate 5 is installed on the extrusion die 4 through a mounting mechanism 7, the size of the extrusion port 6 is adjusted by an adjustment mechanism 8, the mounting mechanism 7 includes a C-shaped frame 701, the C-shaped frame 701 is fixedly connected to the top of the extrusion plate 5, a slot 702 is opened on the outer wall of the C-shaped frame 701, and a plug plate 703 inserted into the slot 702 is fixedly connected to the top of the extrusion die 4. The bottom end of the extrusion die 4 is fixedly connected to a support plate 704, one end of the extrusion die 4 is provided with a connecting groove 705, the inner wall of the connecting groove 705 is provided with a fixing groove 706, the outer wall of one end of the extrusion plate 5 is fixedly connected to a connecting block 707, the outer wall of the end of the extrusion plate 5 away from the connecting block 707 is rotatably connected to a rotating block 708, the outer wall of the rotating block 708 is fixedly connected to a first threaded rod 709, the outer wall of the first threaded rod 709 is connected to a slider 710, the slider 710 is slidably connected to the inside of the connecting block 707, one end of the slider 710 is rotatably connected to a connecting rod 711, one end of the connecting rod 711 is rotatably connected to a fixing block 712, the fixing block 712 is slidably connected to the inside of the connecting block 707 and extends out of the connecting block 707.

[0025] In this embodiment: when installing the extrusion plate 5, the plug plate 703 is inserted into the slot 702. At this time, the support plate 704 contacts the bottom end of the extrusion plate 5 to position the extrusion plate 5. At the same time, the connecting block 707 is inserted into the connecting groove 705, and then the rotating block 708 is rotated. The rotating block 708 rotates to drive the first threaded rod 709 to rotate. The first threaded rod 709 rotates to drive the slider 710 to move. The displacement of the slider 710 drives the fixed block 712 to move through the connecting rod 711. The fixed block 712 is displaced and inserted into the fixed groove 706 to fix the extrusion plate 5, which is convenient for quick installation of the extrusion plate 5.

[0026] Please refer to Figures 3 to 8 The adjusting mechanism 8 includes an adjusting groove 801, which is opened on the outer wall of the extrusion plate 5 and located above the extrusion port 6. The inner wall of the adjusting groove 801 is slidably connected with an adjusting plate 802, and the outer walls on both sides of the adjusting plate 802 are fixedly connected with side plates 803. A limiting rod 804 and a second threaded rod 805 are respectively arranged on both sides of the inner cavity of the C-shaped frame 701. The limiting rod 804 is fixedly connected to the extrusion plate 5, and the second threaded rod 805 is rotatably connected to the extrusion plate 5. The limiting rod 804 and the second threaded rod 805 both pass through the side plate 803. The top of the second threaded rod 805 is located at the top of the C-shaped frame 701 and is fixedly connected with a toothed disc 806. The top of the C-shaped frame 701 is located on one side of the toothed disc 806 and is fixedly connected with a mounting seat 807. The internal sliding connection of the mounting seat 807 A positioning rod 808 is connected, and a first spring 809 is connected between the positioning rod 808 and the mounting seat 807. One end of the positioning rod 808 contacts the toothed disc 806. The interior of the mounting seat 807 is located at the other end of the positioning rod 808 and is rotatably connected to a rotating column 810. A groove 811 is provided on the outer wall of the rotating column 810. The interior of the mounting seat 807 is located at the side of the rotating column 810 away from the positioning rod 808 and is slidably connected to an extrusion rod 812. The interior of the C-shaped frame 701 is located at the bottom end of the extrusion rod 812 and is rotatably connected to a spur gear 813. The interior of the C-shaped frame 701 is located at the bottom end of the spur gear 813 and is slidably connected to a reinforcement rod 814. A second spring 815 is connected between the reinforcement rod 814 and the C-shaped frame 701, and a reinforcement groove 816 is provided on one side of the plug plate 703.

[0027] In this embodiment: when adjusting the size of the extrusion port 6, the toothed disc 806 is rotated, and the rotation of the toothed disc 806 drives the second threaded rod 805 to rotate. The second threaded rod 805 rotates through the side plate 803 to drive the adjustment plate 802 to move. The adjustment plate 802 slides in the adjustment groove 801 to adjust the opening size of the extrusion port 6.

[0028] When adjusting the size of the extrusion port 6, the second spring 815 is in an extruded state, and the groove 811 is facing the positioning rod 808. The positioning rod 808 can move into the groove 811, so that the positioning rod 808 can slide and the toothed disc 806 can rotate. When the adjustment of the extrusion port 6 is completed, the rotating column 810 is rotated toward the extrusion rod 812. At this time, the positioning rod 808 contacts the outer wall of the rotating column 810 without any movable space, thereby fixing the toothed disc 806 to prevent the rotation of the toothed disc 806 from causing the position of the adjustment plate 802 to move. At the same time, the reinforcement rod 814 is engaged into the reinforcement groove 816 by the elastic force of the second spring 815 to prevent the plug plate 703 from moving out of the slot 702, and the connection between the extrusion die 4 and the extrusion plate 5 is reinforced, so as to facilitate the adjustment of the opening size of the extrusion port 6, thereby adjusting the thickness of the extruded material.

[0029] Please refer to Figures 1 to 4 The inner wall of the slot 702 fits with the outer wall of the plug board 703 , and the outer wall of the connecting block 707 fits with the inner wall of the connecting groove 705 .

[0030] In this embodiment, when installing the extrusion plate 5 , the plug plate 703 is inserted into the slot 702 , at which time the support plate 704 contacts the bottom end of the extrusion plate 5 to position the extrusion plate 5 , and at the same time the connecting block 707 is inserted into the connecting groove 705 .

[0031] Please refer to Figures 2 to 5 A first threaded hole is formed on the outer wall of the slider 710 , and the first threaded hole matches the first threaded rod 709 . The outer wall of the fixing block 712 fits the inner wall of the fixing groove 706 .

[0032] In this embodiment: the rotating block 708 is rotated, and the rotating block 708 drives the first threaded rod 709 to rotate, and the first threaded rod 709 drives the slider 710 to move, and the displacement of the slider 710 drives the fixed block 712 to move through the connecting rod 711, and the fixed block 712 is displaced and inserted into the fixed groove 706 to fix the extrusion plate 5.

[0033] Please refer to Figures 3 to 8 The outer walls of the two side plates 803 are respectively provided with a limiting hole and a second threaded hole, the inner wall of the limiting hole is in contact with the outer wall of the limiting rod 804, and the second threaded rod 805 matches the second threaded hole.

[0034] In this embodiment: the toothed disc 806 is rotated, and the rotation of the toothed disc 806 drives the second threaded rod 805 to rotate. The rotation of the second threaded rod 805 drives the adjustment plate 802 to move through the side plate 803, and the adjustment plate 802 slides in the adjustment groove 801. At this time, the limit rod 804 slides in the limit hole.

[0035] Please refer to Figures 3 to 8 The outer wall of one end of the positioning rod 808 is engaged with the toothed disc 806 , and the outer wall of the other end of the positioning rod 808 is in contact with the inner wall of the groove 811 .

[0036] In this embodiment: when the size of the extrusion port 6 is adjusted, the second spring 815 is in a squeezed state, the groove 811 faces the positioning rod 808, and the positioning rod 808 can move into the groove 811, so that the positioning rod 808 can slide and the toothed disc 806 can rotate.

[0037] Please refer to Figures 3 to 8 A semicircular surface is provided at one end of the extrusion rod 812 facing the rotating column 810, and tooth grooves are provided on the outer walls of the extrusion rod 812 and the reinforcement rod 814, which are meshed with the spur gear 813, and the outer wall of one end of the reinforcement rod 814 is in contact with the inner wall of the reinforcement groove 816.

[0038] In this embodiment: after the adjustment of the extrusion port 6 is completed, the rotating column 810 is rotated toward the extrusion rod 812. At this time, the positioning rod 808 contacts the outer wall of the rotating column 810 and there is no space for displacement, thereby fixing the toothed disc 806 to prevent the rotation of the toothed disc 806 from causing the position of the adjustment plate 802 to move. At the same time, the reinforcement rod 814 is engaged into the reinforcement groove 816 by the elastic force of the second spring 815 to prevent the plug plate 703 from moving out of the slot 702.

[0039] Example 2: Preparation of Negative Oxygen Ion Catalyzed SPC Stone Plastic Flooring Material A negative oxygen ion catalyzed SPC stone plastic floor material is prepared from the following components in parts by weight: 120 parts of polyvinyl chloride resin; 300 parts of heavy calcium carbonate; 40 parts of nano titanium dioxide; Tourmaline 20 parts; 15 parts of nano magnesium oxide; 8 parts of plasticizer; 8 parts of lubricant; 3 parts surfactant 2 parts of stabilizer.

[0040] As a further solution of the present invention: the heavy calcium carbonate is a heavy calcium carbonate with a whiteness greater than 90 and a fineness greater than 300 mesh; the nano titanium dioxide is a porous anatase crystal nano carbon dioxide particle doped with a soluble rare earth salt of cerium, lanthanum, praseodymium and yttrium, with a particle size of 30-50nm; the tourmaline is a tourmaline containing iron and manganese elements, and the tourmaline has a particle size of 80nm; the nano magnesium oxide particle has a particle size of 40nm; the plasticizer is diisononyl phthalate; the lubricant is polyethylene wax, and the polyethylene wax is a high melting point polyethylene wax with a melting point higher than 105°C; the surfactant is a silane surfactant, and the stabilizer is a calcium-zinc composite stabilizer.

[0041] The preparation method and application equipment are the same as those in Example 1 and will not be described in detail here.

[0042] Example 3: Preparation of Negative Oxygen Ion Catalyzed SPC Stone Plastic Flooring Material A negative oxygen ion catalyzed SPC stone plastic floor material is prepared from the following components in parts by weight: 160 parts of polyvinyl chloride resin; 200 parts of heavy calcium carbonate; 50 parts of nano titanium dioxide; Tourmaline 30 parts; 20 parts of nano magnesium oxide; 10 parts of plasticizer; Lubricant 10 parts; 5 parts surfactant 3 parts of stabilizer.

[0043] As a further solution of the present invention: the heavy calcium carbonate is a heavy calcium carbonate with a whiteness greater than 90 and a fineness greater than 300 mesh; the nano titanium dioxide is a porous anatase crystal nano carbon dioxide particle doped with a soluble rare earth salt of cerium, lanthanum, praseodymium and yttrium, with a particle size of 30-50nm; the tourmaline is a tourmaline containing iron and manganese elements, and the tourmaline has a particle size of 100nm; the nano magnesium oxide particle has a particle size of 50nm; the plasticizer is diisononyl phthalate; the lubricant is chlorinated polyethylene; the surfactant is a silane surfactant, and the stabilizer is a calcium-zinc composite stabilizer.

[0044] The preparation method and application equipment are the same as those in Example 1 and will not be described in detail here.

[0045] Performance test: 1. Negative ion generation The negative ion catalytic SPC stone plastic floor prepared in Examples 1 to 3 and the ordinary SPC stone plastic floor were used as comparison samples. The negative ion test box method was used, and the test board (sample surface 1m 2) is placed in a sealed box of a certain volume, and after a specified time (24h), the concentration of negative ions in the air in the box is measured, and finally the amount of negative ions generated by the sample is calculated by the formula. The concentration of negative ions in the air in the test box is based on JC / T 1074-2021 "Purification Performance of Indoor Air Purification Functional Coating Materials", and an active exhaust air ion measuring instrument is used. The measured amount of negative ions is shown in Table 1.

[0046] Table 1 Negative ion generation of each sample

[0047] 2. Formaldehyde purification efficiency According to the JC / T 1074-2021 "Purification Performance of Indoor Air Purification Functional Coating Materials" method, the negative ion catalytic SPC stone plastic floor prepared in Examples 1 to 3 was compared with the ordinary SPC stone plastic floor, and the formaldehyde purification efficiency was shown in Table 2.

[0048] Table 2 Formaldehyde purification efficiency of each sample

[0049] The negative ion catalytic SPC flooring of the present invention has good formaldehyde removal effect, with a formaldehyde purification efficiency of more than 92% and a long-term purification rate of more than 78%. It also generates a large number of negative ions while filtering the air, with a negative ion volume of 2100 / cm 3 The above does not contain rare earth elements and radioactive substances, and is safe and environmentally friendly.

[0050] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A negative oxygen ion catalyzed SPC stone plastic floor material, characterized in that: Made from the following components in parts by weight: 80-160 parts of polyvinyl chloride resin; Heavy calcium carbonate 200-300 parts; 30-50 parts of nano titanium dioxide; Tourmaline 10-30 parts; 10-20 parts of nano magnesium oxide; 3 to 10 parts of plasticizer; 5-10 parts of lubricant; Surfactant 1-5 parts 1 to 3 parts of stabilizer.

2. A negative oxygen ion catalyzed SPC stone plastic floor material according to claim 1, characterized in that: The heavy calcium carbonate is heavy calcium carbonate with a whiteness greater than 90 and a fineness greater than 300 meshes; the nano titanium dioxide is porous anatase crystal nano carbon dioxide particles doped with soluble rare earth salts of cerium, lanthanum, praseodymium and yttrium, with a particle size of 30 to 50 nm; the tourmaline is tourmaline containing iron and manganese elements, and the tourmaline has a particle size of 50 to 100 nm; the nano magnesium oxide particles have a particle size of 30 to 50 nm; the plasticizer is diisononyl phthalate; the lubricant is any one of polyethylene wax or chlorinated polyethylene, and the polyethylene wax is a high-melting-point polyethylene wax with a melting point higher than 105° C.; the surfactant is a silane surfactant, and the stabilizer is a calcium-zinc composite stabilizer.

3. A method for preparing the negative oxygen ion catalyzed SPC stone plastic floor material as claimed in claim 1, characterized in that: The steps include: Add polyvinyl chloride resin and heavy calcium carbonate into a mixer, heat and mix, and raise the temperature to 125-155°C; add the remaining raw materials in a certain proportion into the mixer, continue mixing for 5-10 minutes to obtain a mixed material; cool the mixed material to 45-65°C; add the cooled mixed material into an extruder for extrusion molding to obtain a substrate layer; hot-press the substrate layer and the decorative surface layer, and then perform board separation, curing, and slotting treatments; In the extrusion molding step, four temperature control zones are arranged in the extruder, and the temperatures are: 200℃~210℃ in zone 1, 210℃~230℃ in zone 2, 200℃~210℃ in zone 3, and 190℃~180℃ in zone 4. The mixed material passes through zones 1 to 4 in sequence.

4. An apparatus for preparing the negative oxygen ion catalyzed SPC stone plastic floor material as claimed in claim 1, characterized in that: The extruder comprises an extruder body (1), wherein a feed port (2) is arranged at the top of the extruder body (1), a connection port (3) is arranged at one end of the extruder body (1), an extrusion die (4) is installed at one end of the connection port (3), an extrusion plate (5) is installed at one end of the extrusion die (4), an extrusion port (6) is provided on the outer wall of the extrusion plate (5), the extrusion plate (5) is installed on the extrusion die (4) via a mounting mechanism (7), the size of the extrusion port (6) is adjusted via an adjustment mechanism (8), the mounting mechanism (7) comprises a C-shaped frame (701), the C-shaped frame (701) is fixedly connected to the top of the extrusion plate (5), a slot (702) is provided on the outer wall of the C-shaped frame (701), a plug plate (703) inserted into the slot (702) is fixedly connected to the top of the extrusion die (4), and a plug plate (703) inserted into the slot (702) is fixedly connected to the bottom of the extrusion die (4). A support plate (704) is fixedly connected thereto; a connecting groove (705) is provided at one end of the extrusion die (4); a fixing groove (706) is provided on the inner wall of the connecting groove (705); a connecting block (707) is fixedly connected to the outer wall of one end of the extrusion plate (5); a rotating block (708) is rotatably connected to the outer wall of one end of the extrusion plate (5) away from the connecting block (707); a first threaded rod (709) is fixedly connected to the outer wall of the rotating block (708); a slider (710) is connected to the outer wall of the first threaded rod (709); the slider (710) is slidably connected to the interior of the connecting block (707); one end of the slider (710) is rotatably connected to a connecting rod (711); one end of the connecting rod (711) is rotatably connected to a fixing block (712); the fixing block (712) is slidably connected to the interior of the connecting block (707) and extends out of the connecting block (707).

5. The device for preparing negative oxygen ion catalyzed SPC stone plastic floor material according to claim 4, characterized in that: The adjustment mechanism (8) comprises an adjustment groove (801), the adjustment groove (801) being formed on the outer wall of the extrusion plate (5) and being located above the extrusion port (6), the inner wall of the adjustment groove (801) being slidably connected to an adjustment plate (802), the outer walls on both sides of the adjustment plate (802) being fixedly connected to side plates (803), and a limit rod (804) and a second threaded rod (805) being respectively provided on both sides of the inner cavity of the C-shaped frame (701), the limit rod (804) and the extrusion plate (5) being slidably connected to the inner wall of the adjustment groove (801), the outer walls on both sides of the adjustment plate (802) being fixedly connected to side plates (803), the inner cavity of the C-shaped frame (701) being provided with a limit rod (804) and a second threaded rod (805 ... plate (802), the inner cavity of the C-shaped frame (701) being provided with a limit rod (804) and a second The second threaded rod (805) is rotatably connected to the extrusion plate (5), the limiting rod (804) and the second threaded rod (805) both pass through the side plate (803), the top end of the second threaded rod (805) is located at the top end of the C-shaped frame (701) and is fixedly connected to a toothed disc (806), the top end of the C-shaped frame (701) is located at one side of the toothed disc (806) and is fixedly connected to a mounting seat (807), and the inner sliding portion of the mounting seat (807) is A positioning rod (808) is rotatably connected to the mounting seat (807), a first spring (809) is connected between the positioning rod (808) and the mounting seat (807), one end of the positioning rod (808) is in contact with the toothed disc (806), the interior of the mounting seat (807) is located at the other end of the positioning rod (808) and is rotatably connected to a rotating column (810), the outer wall of the rotating column (810) is provided with a groove (811), the interior of the mounting seat (807) is located away from the rotating column (810), and the rotation of the rotating column (810) is connected to the mounting seat (807). One side of the positioning rod (808) is slidably connected to an extrusion rod (812); the interior of the C-shaped frame (701) is located at the bottom end of the extrusion rod (812) and is rotatably connected to a spur gear (813); the interior of the C-shaped frame (701) is located at the bottom end of the spur gear (813) and is slidably connected to a reinforcement rod (814); a second spring (815) is connected between the reinforcement rod (814) and the C-shaped frame (701); and one side of the plug plate (703) is provided with a reinforcement groove (816).

6. The device for preparing negative oxygen ion catalyzed SPC stone plastic floor material according to claim 5, characterized in that: The inner wall of the slot (702) fits in with the outer wall of the plug board (703), and the outer wall of the connection block (707) fits in with the inner wall of the connection groove (705).

7. The device for preparing negative oxygen ion catalyzed SPC stone plastic floor material according to claim 5, characterized in that: The outer wall of the sliding block (710) is provided with a first threaded hole, the first threaded hole matches the first threaded rod (709), and the outer wall of the fixing block (712) fits the inner wall of the fixing groove (706).

8. The device for preparing negative oxygen ion catalyzed SPC stone plastic floor material according to claim 5, characterized in that: The outer walls of the two side plates (803) are respectively provided with a limiting hole and a second threaded hole, the inner wall of the limiting hole is fitted with the outer wall of the limiting rod (804), and the second threaded rod (805) matches the second threaded hole.

9. The device for preparing negative oxygen ion catalyzed SPC stone plastic floor material according to claim 5, characterized in that: The outer wall of one end of the positioning rod (808) is engaged with the toothed disc (806), and the outer wall of the other end of the positioning rod (808) is in contact with the inner wall of the groove (811).

10. The device for preparing negative oxygen ion catalyzed SPC stone plastic floor material according to claim 5, characterized in that: A semicircular surface is provided at one end of the extrusion rod (812) facing the rotating column (810); tooth grooves are provided on the outer walls of the extrusion rod (812) and the reinforcement rod (814); the tooth grooves mesh with the spur gear (813); and the outer wall of one end of the reinforcement rod (814) fits with the inner wall of the reinforcement groove (816).

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