A modified rubber-plastic floor and preparation method thereof

Abstract

The invention discloses a modified rubber-plastic floor and a preparation method thereof, belonging to the technical field of rubber-plastic floor. The modified rubber-plastic floor comprises a rubber-plastic surface layer and a PVC base layer, wherein the PVC content in the rubber-plastic surface layer is 10-15%; the content of the environmentally friendly plasticizer in the rubber-plastic surface layer is 5-10%, and the content of EPDM in the rubber-plastic surface layer is 60-80%; an interface agent is coated between the PVC base layer and the rubber-plastic surface layer, and the modified rubber-plastic floor preparation method is as follows: the first step is the preparation of the rubber-plastic surface layer, the second step is the removal of organic volatiles, the third step is the preparation of the PVC base layer, and the fourth step is the molding of the modified rubber-plastic floor. The modified rubber-plastic floor and the preparation method thereof of the invention have good comfort and structural strength and wear resistance of the PVC floor. In addition, the rubber-plastic floor components are more environmentally friendly, and after the subsequent efficient removal of organic matter, the prepared rubber-plastic floor is more environmentally friendly, has low organic volatiles, and is safer and more environmentally friendly to use.

Description

Technical Field

[0001] The invention specifically relates to a modified rubber-plastic floor and a preparation method thereof, and belongs to the technical field of rubber-plastic floors. Background Art

[0002] The rubber-plastic floor is a floor made of natural rubber, synthetic rubber, polyvinyl chloride and other auxiliary materials. Polyvinyl chloride can be made into plastic products by adding different additives according to different uses. A proper amount of plasticizer is added to the polyvinyl chloride resin to make a variety of hard, soft and transparent products. Existing rubber-plastic floors, such as the Chinese patent authorization announcement number: CN112662088B, disclose a flame-retardant PVC / NBR rubber-plastic floor material and a processing method thereof, which relates to the technical field of rubber-plastic materials. The present invention uses PVC and NBR as a matrix, and prepares a rubber-plastic floor material by adding reinforcing carbon black, epoxy soybean oil, ultrafine flame retardant, antioxidant and ultraviolet absorber as auxiliary agents; the rubber-plastic floor obtained by the processing method has excellent flame retardant properties, but when the rubber-plastic floor with this structure is laid and used, it is easy to cause the organic volatiles in the surrounding environment to exceed the standard. Summary of the invention

[0003] In order to solve the above problems, the present invention proposes a modified rubber-plastic floor and a preparation method thereof. The prepared rubber-plastic floor has low organic volatiles and is safe and environmentally friendly to use.

[0004] The modified rubber-plastic floor of the present invention comprises:

[0005] The rubber-plastic surface layer has a PVC content of 10-15%; the environmentally friendly plasticizer content in the rubber-plastic surface layer is 5-10%; the EPDM content in the rubber-plastic surface layer is 60-80%; the rubber-plastic surface layer uses EPDM as the main material, so that the rubber-plastic floor has the shock absorption and anti-skid properties of the rubber floor, and PVC is used as the main additive of the main material, PVC and the environmentally friendly plasticizer are mixed and melted, and a mesh structure support system is formed between the main materials, so that the structural strength and wear resistance of the rubber-plastic surface layer are improved, so that the rubber-plastic surface layer still maintains the characteristics of the rubber floor, and compared with the rubber-plastic floor prepared with PVC as the main material or PVC and rubber as the main materials, the texture is softer and the stepping comfort is better;

[0006] PVC base layer, an interface agent is coated between the PVC base layer and the rubber-plastic surface layer, and they are integrally formed by hot pressing; the PVC base layer is used to support the bottom surface of the rubber-plastic surface layer and transition between the ground, and the amount of environmentally friendly plasticizer in the PVC base layer is less. Therefore, the PVC base layer is harder than the mesh structure support system of the rubber-plastic surface layer, so that the PVC base layer can better support the rubber-plastic surface layer and eliminate the impact of uneven ground on the rubber-plastic surface layer; an interface agent is coated between the PVC base layer and the rubber-plastic surface layer, and they are integrally formed by hot pressing to form a rubber-plastic floor coil, which has the comfort of rubber floor and the structural strength and wear resistance of PVC floor.

[0007] Furthermore, the rubber-plastic surface layer includes the following components: 60-100 parts of EPDM rubber, 10-20 parts of PVC, 5-10 parts of environmentally friendly plasticizer, 3-8 parts of modified magnesium hydroxide, 10-15 parts of white carbon black and 3-5 parts of di-tert-butyl peroxyisopropylbenzene; the PVC base layer includes 100 parts of PVC resin, 30-50 parts of environmentally friendly plasticizer, 2-5 parts of weathering agent and 2-5 parts of antistatic agent.

[0008] A method for preparing a modified rubber-plastic floor is used to prepare the modified rubber-plastic floor. The method is specifically as follows:

[0009] The first step is to prepare the rubber-plastic surface layer, fully mix the components of the rubber-plastic surface layer to obtain a mixture, and put the mixture into an internal mixer for internal mixing; take out the internally mixed mixture for rolling to form a flat plate, and roll it to obtain a rubber-plastic surface layer coil;

[0010] The second step is to remove organic volatiles. The rubber and plastic surface layer coil is sent to the volatile removal box to remove organic volatiles. The removal time is 3 hours and the removal temperature is 100~120℃.

[0011] The third step is to prepare the PVC base layer, fully mix the components of the PVC base layer to obtain a mixture, put the mixture into a twin-screw extruder, melt blend, and extrude to obtain a PVC base layer coil;

[0012] The fourth step is to form the modified rubber-plastic floor. The PVC base layer coil prepared in the third step and the rubber-plastic surface layer coil prepared in the second step are fed into the coating hot pressing equipment to complete the integrated hot pressing forming to obtain the modified rubber-plastic floor. The modified rubber-plastic floor is rolled up to obtain the rubber-plastic floor coil.

[0013] Furthermore, isolation boxes are provided at both ends of the volatile removal box, and the isolation boxes are provided with inlets and outlets; the volatile removal box is composed of a plurality of groups of heating boxes connected in series, and a door panel is hinged on the front side of the volatile removal box; the heating box includes a box body, and a heater is provided at the bottom of the box body; a row of transfer rubber rollers are provided at the upper and lower parts of the inner side of the box body through bearings, and the two rows of transfer rubber rollers are staggered, and an air collecting hood is provided on the top of the box body, and the air collecting hood is connected to the exhaust fan through an air duct; The output end of the exhaust fan is connected to the exhaust gas treatment box; a guide rubber roller is arranged inside the isolation box through a bearing; an input roller seat and an output roller seat are arranged at both ends of the volatile removal box; the roll of the rubber and plastic surface layer coil is placed on the input roller seat, and an empty roll is placed on the output roller seat, then the rubber and plastic surface layer coil is pulled into the isolation box on one side of the volatile removal box, and sent to the transfer rubber roller, the door panel is opened, the rubber and plastic surface layer coil is pulled into the inside of the volatile removal box, and the rubber and plastic surface layer coil is pulled in an S shape. The rubber surface layer roll is led to two rows of transfer rollers. Finally, the end of the rubber surface layer roll is pulled through the guide roller of another isolation box and bonded to the empty roll with tape. Then the door panel is closed, the heater and exhaust fan are turned on, the heater is turned on, the exhaust fan is delayed and turned on intermittently, the delay time is 3~5min, the time interval between two openings is 3~5min, and the exhaust fan is continuously turned on for 2~3min; when the heating time is reached, the heater is turned off and the exhaust fan is continuously turned on until the volatile matter is removed from the box. After the internal temperature drops to room temperature, the exhaust fan stops, and the empty reel starts to move to reel in the rubber and plastic surface layer coil from which volatile organic substances have been removed; when a rubber and plastic surface layer coil is completely unwound, the reel of a new rubber and plastic surface layer coil is placed on the input roller seat, and the leading end of the new rubber and plastic surface layer coil is butted against the trailing end of the unwound rubber and plastic surface layer coil, and adhesive tape is applied on both sides; then, the new rubber and plastic surface layer coil is pulled by the previous rubber and plastic surface layer coil, so that the new rubber and plastic surface layer coil is arranged on the guide rubber roller.

[0014] Furthermore, a tape connection platform is fixed below the inlet and outlet near the side of the input roller seat, and the tape connection platform includes a platform seat plate, a panel is fixed on the side of the platform seat plate, and support rollers are respectively fixed on the platform seat plate and the panel; a tape roll is sleeved on the support roller; when the coils are butted, the tape roll on the platform seat plate is first pulled and pasted to the bottom of the panel, then the tail end of the unrolled rubber and plastic surface layer coil is pressed onto the tape, then the head end of the new rubber and plastic surface layer coil is butted with the tail end of the unrolled rubber and plastic surface layer coil, and the bottom of the head end of the new rubber and plastic surface layer coil is pressed tightly with the tape; finally, the tape roll on the panel is pulled, and the head end of the new rubber and plastic surface layer coil is pasted to the top surface of the tail end of the unrolled rubber and plastic surface layer coil through the tape roll; after the pasting is completed, the pasted part of the tape roll and the rubber and plastic surface layer coil is cut off.

[0015] Furthermore, the coating and hot pressing equipment includes a coating unit and a hot pressing unit; the hot pressing unit includes an upper hot pressing roller group and a lower hot pressing roller group, and multiple groups of hot pressing hydraulic cylinders are arranged between the upper hot pressing roller group and the lower hot pressing roller group; the coating unit includes a PVC coil unwinding device; a rubber and plastic coil unwinding device is arranged above the PVC coil unwinding device; a PVC base coil is placed on the PVC coil unwinding device, and the PVC base coil passes through a first pair of rollers, a first deviation correcting roller, an interface agent coating unit and a second deviation correcting roller in sequence by traction; a rubber and plastic surface layer coil is placed on the rubber and plastic coil unwinding device, and the rubber and plastic surface layer coil passes through a second pair of rollers, a guide roller, a third deviation correcting roller and a third pair of rollers in sequence by traction, and is pressed onto the top surface of the PVC base coil, and after the rubber and plastic surface layer coil and the PVC base coil are pressed, they are connected to the hot pressing unit through a fourth deviation correcting roller, a fourth pair of rollers and a fifth deviation correcting roller in sequence; and are connected to the floor coil winding device after passing through the hot pressing unit.

[0016] Compared with the prior art, the modified rubber-plastic floor and the preparation method thereof of the present invention have the comfort of rubber floor and the structural strength and wear resistance of PVC floor. In addition, the components of the rubber-plastic floor are more environmentally friendly, and after the subsequent efficient removal of organic matter, the prepared rubber-plastic floor is more environmentally friendly. After the rubber-plastic surface layer is prepared, the volatile organic matter is tested to be lower than 7.5 mg / m², and through the organic volatile matter removal process, the TVOC in the rubber-plastic surface layer coil is reduced by 87%, and the rubber-plastic surface layer coil meets environmental protection requirements; the prepared rubber-plastic floor is safer and more environmentally friendly to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the modified rubber-plastic floor of the present invention.

[0018] Figure 2 It is a schematic diagram of the overall structure of the volatile matter removal box of the present invention.

[0019] Figure 3 It is a schematic diagram of the internal fabric structure of the volatile matter removal box of the present invention.

[0020] Figure 4 It is a schematic diagram of the structure of the belt connection platform of the present invention.

[0021] Figure 5 It is a schematic diagram of the structure of the coating hot pressing equipment of the present invention.

[0022] Reference numerals: 1, rubber-plastic surface layer, 2, PVC base layer, 3, rubber-plastic surface layer coil, 4, PVC base layer coil, 5, isolation box, 6, inlet and outlet, 7, heating box, 8, door panel, 9, heater, 10, transfer rubber roller, 11, air collecting hood, 12, exhaust fan, 13, belt guide rubber roller, 14, input roller seat, 15, output roller seat, 16, belt connection platform, 17, platform seat plate, 18, enclosure, 19, tape roll, 20, upper hot pressing roller Group, 21. Lower hot pressing roller group, 22. Hot pressing hydraulic cylinder, 23. PVC coil unwinding equipment, 24. Rubber and plastic coil unwinding equipment, 25. First pair of rollers, 26. First deviation-correcting roller, 27. Interface agent coating unit, 28. Second deviation-correcting roller, 29. Second pair of rollers, 30. Guide roller, 31. Third deviation-correcting roller, 32. Third pair of rollers, 33. Fourth deviation-correcting roller, 34. Fourth pair of rollers, 35. Fifth deviation-correcting roller, 36. Floor coil winding equipment. DETAILED DESCRIPTION

[0023] like Figure 1 The modified rubber-plastic floor shown includes:

[0024] The rubber-plastic surface layer 1 has a PVC content of 10-15%; the environmentally friendly plasticizer content in the rubber-plastic surface layer 1 is 5-10%; the EPDM content in the rubber-plastic surface layer 1 is 60-80%; the rubber-plastic surface layer 1 uses EPDM as the main material, so that the rubber-plastic floor has the shock absorption and anti-skid properties of the rubber floor, and PVC is used as the main additive of the main material, PVC and the environmentally friendly plasticizer are mixed and melted, and a mesh structure support system is formed between the main materials, so that the structural strength and wear resistance of the rubber-plastic surface layer 1 are improved, so that the rubber-plastic surface layer 1 still maintains the characteristics of the rubber floor, and compared with the rubber-plastic floor prepared with PVC as the main material or PVC and rubber as the main materials, the texture is softer and the stepping comfort is better;

[0025] PVC base layer 2, an interface agent is coated between the PVC base layer 2 and the rubber-plastic surface layer 1, and they are integrally formed by hot pressing; the PVC base layer 2 is used to support the bottom surface of the rubber-plastic surface layer 1 and transition between the ground, and the amount of environmentally friendly plasticizer in the PVC base layer 2 is less. Therefore, the PVC base layer 2 is harder than the mesh structure support system of the rubber-plastic surface layer 1, so that the PVC base layer 2 can better support the rubber-plastic surface layer 1 and eliminate the influence of uneven ground on the rubber-plastic surface layer 1; an interface agent is coated between the PVC base layer 2 and the rubber-plastic surface layer 1, and they are integrally formed by hot pressing to form a rubber-plastic floor coil, which has the comfort of rubber floor and the structural strength and wear resistance of PVC floor.

[0026] The rubber-plastic surface layer 1 comprises the following components: 60-100 parts of EPDM rubber, 10-20 parts of PVC, 5-10 parts of environmentally friendly plasticizer, 3-8 parts of modified magnesium hydroxide, 10-15 parts of white carbon black and 3-5 parts of di-tert-butyl peroxyisopropylbenzene; the PVC base layer 2 comprises 100 parts of PVC resin, 30-50 parts of environmentally friendly plasticizer, 2-5 parts of weathering agent and 2-5 parts of antistatic agent.

[0027] Example:

[0028] The rubber-plastic surface layer 1 comprises the following components:

[0029] 100 parts of EPDM rubber: brand 4770R, volatile matter 0.021%, Dow Chemical Company, USA;

[0030] 5 parts of modified magnesium hydroxide: brand H5IV, volatile matter 0.047%, Albemarle, Germany;

[0031] 15 parts of white carbon black: brand X-200, volatile matter 0.023%, Shandong Hongxiang Zinc Industry Co., Ltd.;

[0032] 5 parts of di-tert-butyl peroxyisopropylbenzene: brand 40B Hunan Yixiang Technology Co., Ltd.;

[0033] PVC 20 parts: brand S-1300, Sinopec Qilu Branch;

[0034] 10 parts of environmentally friendly plasticizer, the environmentally friendly plasticizer is dioctyl adipate;

[0035] The PVC base layer 2 comprises the following components:

[0036] 100 parts of PVC resin: brand X-200, Shandong Hongxiang Zinc Industry Co., Ltd.;

[0037] 50 parts of environmentally friendly plasticizer, the environmentally friendly plasticizer is dioctyl adipate;

[0038] Weathering agent 5 parts: light stabilizer 622 and antioxidant 1010, of which light stabilizer 622 is 3 parts and antioxidant 1010 is 2 parts;

[0039] Antistatic agent 2 parts: betaine.

[0040] After the rubber-plastic surface layer 1 is prepared, the organic matter volatilization test is carried out. The sample is prepared according to the GB18586-2001 standard. Ten 100x100mm samples are randomly cut from the rubber-plastic surface layer 1. Then, the samples are tested by the hot roller method and the oven method respectively. The test results show that the volatile matter of the samples is 6.8-7.2mg / m²; the volatile matter of the product that meets the requirements of the rubber-plastic floor cloth standard GB18586-2001 for rail transit vehicles is less than 10mg / m².

[0041] A method for preparing a modified rubber-plastic floor is used to prepare the modified rubber-plastic floor. The method is specifically as follows:

[0042] The first step is to prepare the rubber-plastic surface layer 1, fully mix the components of the rubber-plastic surface layer 1 to obtain a mixture, put the mixture into an internal mixer for internal mixing; take out the internally mixed mixture for rolling to form a flat plate, and roll it to obtain a rubber-plastic surface layer coil 3;

[0043] The second step is to remove organic volatiles. The rubber-plastic surface layer coil 3 is sent to the volatile removal box to remove organic volatiles. The removal time is 3 hours and the removal temperature is 100-120°C. The rubber-plastic surface layer coil 3 that has been produced is sent to the volatile removal box to remove volatiles. The removal time is 3 hours and the removal temperature is 100°C. After the removal is completed, the rubber-plastic surface layer coil 3 from which the volatiles have not been removed and the rubber-plastic surface layer coil 3 from which the volatiles have been removed are sampled respectively, and the removal effect is measured using the reference standard ISO12219-2 "Interior air of road vehicles Part 2: Determination and screening method for volatile organic compounds emitted by automotive interiors and materials-Bag method". The test results are: the TVOC reduction in the rubber-plastic surface layer coil 3 reaches 87%, and the rubber-plastic surface layer coil 3 meets environmental protection requirements.

[0044] The third step is to prepare the PVC base layer 2, fully mix the components of the PVC base layer 2 to obtain a mixture, put the mixture into a twin-screw extruder, melt blend, and extrude to obtain a PVC base layer coil 4;

[0045] The fourth step is to form the modified rubber-plastic floor. The PVC base layer coil 4 prepared in the third step and the rubber-plastic surface layer coil 3 prepared in the second step are fed into the coating hot pressing equipment to complete the integrated hot pressing forming to obtain the modified rubber-plastic floor. The modified rubber-plastic floor is rolled up to obtain the rubber-plastic floor coil. After the production of the rubber-plastic floor coil is completed, the rubber-plastic floor coil is stacked in a sealed warehouse, and the warehouse is continuously monitored for volatiles. The monitoring results show that the release amounts of benzene, toluene, ethylbenzene and styrene are all below the detection limit.

[0046] like Figures 2 to 4As shown, isolation boxes 5 are provided at both ends of the volatile removal box, and the isolation boxes 5 are provided with inlet and outlet ports 6; the volatile removal box is composed of a plurality of groups of heating boxes 7 connected in series, and a door panel 8 is hinged on the front side of the volatile removal box; the heating box 7 includes a box body, and a heater 9 is provided at the bottom of the box body; a row of transfer rubber rollers 10 are provided at the upper and lower parts of the inner side of the box body through bearings, and the two rows of transfer rubber rollers 10 are staggered, and an air collecting hood 11 is provided on the top of the box body, and the air collecting hood 11 is connected to an exhaust fan 12 through an air duct; the exhaust The output end of the machine 12 is connected to the exhaust gas treatment box; a guide rubber roller 13 is arranged inside the isolation box 5 through a bearing; an input roller seat 14 and an output roller seat 15 are arranged at both ends of the volatile removal box; the roll of the rubber and plastic surface layer coil 3 is placed on the input roller seat 14, and an empty roll is placed on the output roller seat 15, then the rubber and plastic surface layer coil 3 is pulled into the isolation box 5 on one side of the volatile removal box, and is sent to the transfer rubber roller 10, the door panel 8 is opened, the rubber and plastic surface layer coil 3 is pulled into the inside of the volatile removal box, and the rubber and plastic surface layer coil 3 is S The rubber surface layer coil 3 is pulled and arranged on two rows of transfer rubber rollers 10. Finally, the end of the rubber surface layer coil 3 is pulled through the guide rubber roller 13 of another isolation box 5 and adhered to the empty reel by the adhesive tape. Then the door panel 8 is closed, the heater 9 and the exhaust fan 12 are turned on, the heater 9 is turned on, the exhaust fan 12 is delayed and turned on intermittently, the delay time is 3~5min, the time interval between two openings is 3~5min, and the exhaust fan 12 is continuously turned on for 2~3min; when the heating time is reached, the heater 9 is turned off and the exhaust fan 12 is continuously turned on until the volatiles are After the temperature inside the removal box drops to room temperature, the exhaust fan 12 stops, and the empty reel starts to move to reel in the rubber-plastic surface layer coil 3 from which volatile organic substances have been removed; when one rubber-plastic surface layer coil 3 has been completely unwound, the reel of a new rubber-plastic surface layer coil 3 is placed on the input roller seat 14, and the leading end of the new rubber-plastic surface layer coil 3 is docked with the trailing end of the unwound rubber-plastic surface layer coil 3, and adhesive tape is pasted on both sides; then, the new rubber-plastic surface layer coil 3 is pulled by the previous rubber-plastic surface layer coil 3, so that the new rubber-plastic surface layer coil 3 is arranged on the guide rubber roller 13.

[0047] During operation, the first group of rubber-plastic surface layer coils 3 are manually spread. After the spreading is completed, the heater 9 provides heat to the inside of the box, so that the temperature inside the box is maintained at 100°C~120°C. The high temperature is used to provide heat to the rubber-plastic surface layer coils 3, so that the volatiles of the rubber-plastic surface layer coils 3 evaporate quickly, and the exhaust fan 12 intermittently draws negative pressure, so that the volatiles of the rubber-plastic surface layer coils 3 can be efficiently removed.

[0048] A tape connection platform 16 is fixed below the inlet and outlet port 6 on one side of the input roller seat 14, and the tape connection platform 16 includes a platform seat plate 17, and a panel 18 is fixed on the side of the platform seat plate 17, and support rollers are fixed on the platform seat plate 17 and the panel 18 respectively; a tape roll 19 is sleeved on the support roller; when the coils are butted, the tape roll 19 on the platform seat plate 17 is first pulled and pasted to the bottom of the panel 18, and then the tail end of the unrolled rubber and plastic surface layer coil 3 is pressed onto the tape, and then the head end of the new rubber and plastic surface layer coil 3 is butted with the tail end of the unrolled rubber and plastic surface layer coil 3, and the bottom of the head end of the new rubber and plastic surface layer coil 3 is pressed against the tape; finally, the tape roll 19 on the panel 18 is pulled, and the tape roll 19 is used to connect the rubber and plastic surface layer coil 3 to the rubber and plastic surface layer coil 3. The leading end of the new rubber-plastic surface layer coil 3 is pasted to the top surface of the trailing end of the unrolled rubber-plastic surface layer coil 3; after the pasting is completed, the adhesive tape roll 19 and the pasted portion of the rubber-plastic surface layer coil 3 are cut off; the previous rubber-plastic surface layer coil 3 can be butted with the next rubber-plastic surface layer coil 3 through the tape splicing platform 16, and the traction of the previous rubber-plastic surface layer coil 3 can save the time of laying the next rubber-plastic surface layer coil 3 in the volatile removal box, thereby realizing continuous feeding into the volatile removal box; when splicing, the platform seat plate 17 of the tape splicing platform 16 is used as a force-bearing platform, and the two groups of rubber-plastic surface layer coils 3 are butted head to tail, and the top and bottom surfaces of the adhesive tape roll 19 are synchronously bonded to complete the connection between the two groups of rubber-plastic surface layer coils 3.

[0049] like Figure 5As shown, the coating hot pressing equipment includes a coating unit and a hot pressing unit; the hot pressing unit includes an upper hot pressing roller group 20 and a lower hot pressing roller group 21, and multiple groups of hot pressing hydraulic cylinders 22 are arranged between the upper hot pressing roller group 20 and the lower hot pressing roller group 21; the coating unit includes a PVC coil unwinding device 23; a rubber and plastic coil unwinding device 24 is arranged above the PVC coil unwinding device 23; a PVC base coil 4 is placed on the PVC coil unwinding device 23, and the PVC base coil 4 is pulled through the first pair of rollers 25, the first deviation correction roller 26, the interface agent coating device 27, and the interface agent coating device 28 in sequence. Unit 27 and second deviation-correcting roller 28; a rubber-plastic surface layer coil 3 is placed on the rubber-plastic coil unwinding device 24, and the rubber-plastic surface layer coil 3 passes through the second pair of rollers 29, the guide roller 30, the third deviation-correcting roller 31 and the third pair of rollers 32 in sequence by traction, and is pressed onto the top surface of the PVC base layer coil 4. After the rubber-plastic surface layer coil 3 and the PVC base layer coil 4 are pressed, they are connected to the hot pressing unit through the fourth deviation-correcting roller 33, the fourth pair of rollers 34 and the fifth deviation-correcting roller 35 in sequence; and are connected to the floor coil winding device 36 after passing through the hot pressing unit; the coating hot pressing device can realize the rubber-plastic coil and PV The C base coil 4 is integrally hot-pressed and rolled up by the floor coil winding device 36 to obtain a finished product; when working, the PVC coil unwinding device 23 unwinds the PVC base coil 4, and the PVC base coil 4 is introduced into the interface agent coating unit 27 through the first pair of rollers 25, and the interface agent coating unit 27 coats the interface agent. The input side and the output side of the interface agent coating unit 27 are aligned by the first deviation correction roller 26 and the second deviation correction roller 28. After the coating is completed, the rubber and plastic surface layer coil 3 is pre-pressed, and the rubber and plastic surface layer coil 3 is unrolled by the rubber and plastic coil unwinding device 24. The coil is rolled up according to the pressure drop. The rubber-plastic floor coil is pulled and centered by the second pair of rollers 29, the guide roller 30, the third deviation-correcting roller 31 and the third pair of rollers 32 for traction and centering. Then, it moves to the top of the PVC base coil 4 coated with the interface agent, and is centered and cold-pressed by the fourth deviation-correcting roller 33, the fourth pair of rollers 34 and the fifth deviation-correcting roller 35. The cold-pressed rubber-plastic floor coil is sent to the hot-pressing unit, and the hot-pressing hydraulic cylinder 22 controls the upper hot-pressing roller group 20 and the lower hot-pressing roller group 21 to press the rubber-plastic floor coil. After the rubber-plastic floor coil is hot-pressed together, the finished product is rolled up by the floor coil winding device 36 to realize automatic hot-pressing integrated molding.

[0050] The above embodiments are only preferred implementations of the present invention, so any equivalent changes or modifications made according to the structures, features and principles described in the scope of application of the present invention are included in the scope of application of the present invention.

Claims

1. A modified rubber-plastic floor, characterized in that: The modified rubber-plastic floor is composed of a rubber-plastic surface layer and a PVC base layer; an interface agent is coated between the rubber-plastic surface layer and the PVC base layer, and the rubber-plastic surface layer and the PVC base layer are integrally formed by hot pressing; The rubber-plastic surface layer is composed of 60-100 parts of EPDM rubber, 10-20 parts of PVC, 5-10 parts of environmentally friendly plasticizer, 3-8 parts of modified magnesium hydroxide, 10-15 parts of white carbon black and 3-5 parts of di-tert-butyl peroxyisopropylbenzene; the PVC base layer is composed of 100 parts of PVC resin, 30-50 parts of environmentally friendly plasticizer, 2-5 parts of weathering agent and 2-5 parts of antistatic agent.

2. A method for preparing a modified rubber-plastic floor, used for preparing the modified rubber-plastic floor according to claim 1, characterized in that: The method is specifically as follows: The first step is to prepare the rubber-plastic surface layer, fully mix the components of the rubber-plastic surface layer to obtain a mixture, and put the mixture into an internal mixer for internal mixing; take out the internally mixed mixture for rolling to form a flat plate, and roll it to obtain a rubber-plastic surface layer coil; The second step is to remove organic volatiles. The rubber and plastic surface layer coil is sent to the volatile removal box to remove organic volatiles. The removal time is 3 hours and the removal temperature is 100~120℃. The third step is to prepare the PVC base layer, fully mix the components of the PVC base layer to obtain a mixture, put the mixture into a twin-screw extruder, melt blend, and extrude to obtain a PVC base layer coil; The fourth step is to form the modified rubber-plastic floor. The PVC base layer coil prepared in the third step and the rubber-plastic surface layer coil prepared in the second step are fed into the coating hot-pressing equipment to complete the integrated hot-pressing forming to obtain the modified rubber-plastic floor. The modified rubber-plastic floor is rolled to obtain the rubber-plastic floor coil. Isolation boxes are provided at both ends of the volatile removal box, and the isolation boxes are provided with inlets and outlets; the volatile removal box is composed of multiple groups of heating boxes connected in series, and a door panel is hinged on the front side of the volatile removal box; the heating box includes a box body, and a heater is provided at the bottom of the box body; a row of transfer rubber rollers are provided at the upper and lower parts of the inner side of the box body through bearings, and the two rows of transfer rubber rollers are staggered, and an air collecting hood is provided on the top of the box body, and the air collecting hood is connected to the exhaust fan through an air duct; the exhaust fan output The outlet end is connected to the waste gas treatment box; a guide rubber roller is arranged inside the isolation box through a bearing; an input roller seat and an output roller seat are arranged at both ends of the volatile removal box; the roll of the rubber and plastic surface layer coil is placed on the input roller seat, and an empty roll is placed on the output roller seat, then the rubber and plastic surface layer coil is pulled into the isolation box on one side of the volatile removal box, and sent to the transfer rubber roller, the door panel is opened, the rubber and plastic surface layer coil is pulled into the inside of the volatile removal box, and the rubber and plastic surface layer coil is pulled in an S-shaped arrangement To two rows of transfer rollers, finally, pull the end of the rubber and plastic surface layer coil through the guide roller of another isolation box and bond it to the empty reel with tape. Then close the door panel, turn on the heater and exhaust fan, turn on the heater, delay the exhaust fan and turn it on intermittently. The delay time is 3~5min, the time interval between two starts is 3~5min, and the exhaust fan is turned on continuously for 2~3min. When the heating time is reached, the heater is turned off and the exhaust fan is turned on continuously until the volatile matter is removed from the box. After the internal temperature drops to room temperature, the exhaust fan stops, the empty reel starts to move, and the rubber and plastic surface layer coil with organic volatiles removed is wound up; when a rubber and plastic surface layer coil is completely unwound, the reel of the new rubber and plastic surface layer coil is placed on the input roller seat, and the head end of the new rubber and plastic surface layer coil is connected with the tail end of the unwound rubber and plastic surface layer coil, and adhesive tape is pasted on both sides; then, the new rubber and plastic surface layer coil is pulled by the previous rubber and plastic surface layer coil, so that the new rubber and plastic surface layer coil is arranged on the guide rubber roller.

3. The method for preparing the modified rubber-plastic floor according to claim 2, characterized in that: A tape connection platform is fixed below the inlet and outlet near the side of the input roller seat, and the tape connection platform includes a platform seat plate, a panel is fixed on the side of the platform seat plate, and support rollers are respectively fixed on the platform seat plate and the panel; a tape roll is sleeved on the support roller; when the coils are butted, the tape roll on the platform seat plate is first pulled and pasted to the bottom of the panel, then the tail end of the unrolled rubber and plastic surface layer coil is pressed onto the tape, then the head end of the new rubber and plastic surface layer coil is butted with the tail end of the unrolled rubber and plastic surface layer coil, and the bottom of the head end of the new rubber and plastic surface layer coil is pressed tightly with the tape; finally, the tape roll on the panel is pulled, and the head end of the new rubber and plastic surface layer coil is pasted to the top surface of the tail end of the unrolled rubber and plastic surface layer coil through the tape roll; after the pasting is completed, the pasted part of the tape roll and the rubber and plastic surface layer coil is cut off.

4. The method for preparing the modified rubber-plastic floor according to claim 2, characterized in that: The coating hot pressing equipment comprises a coating unit and a hot pressing unit; the hot pressing unit comprises an upper hot pressing roller group and a lower hot pressing roller group, and a plurality of hot pressing hydraulic cylinders are arranged between the upper hot pressing roller group and the lower hot pressing roller group; the coating unit comprises a PVC coil unwinding device; a rubber and plastic coil unwinding device is arranged above the PVC coil unwinding device; a PVC base coil is placed on the PVC coil unwinding device, and the PVC base coil passes through a first pair of rollers, a first deviation correcting roller, an interface agent coating unit and a second deviation correcting roller in sequence by traction; a rubber and plastic surface layer coil is placed on the rubber and plastic coil unwinding device, and the rubber and plastic surface layer coil passes through a second pair of rollers, a guide roller, a third deviation correcting roller and a third pair of rollers in sequence by traction, and is pressed onto the top surface of the PVC base coil, and after the rubber and plastic surface layer coil and the PVC base coil are pressed, they are connected to the hot pressing unit through a fourth deviation correcting roller, a fourth pair of rollers and a fifth deviation correcting roller in sequence; and are connected to the floor coil winding device after passing through the hot pressing unit.

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