Prefabricated TPV (thermoplastic vulcanizate) tread mat for vehicle and production process of tread mat

Abstract

The invention discloses a prefabricated TPV (thermoplastic vulcanizate) tread mat for a vehicle and a production process of the prefabricated TPV tread mat, and the production process of the prefabricated TPV tread mat for the vehicle is adopted for producing and processing the TPV tread mat. The production method comprises the following steps of material preparing, feeding, softening agent adding, vulcanizing agent adding, heating, stirring and mixing, feeding into an injection molding extruder and mold forming, the prefabricated TPV thermoplastic elastomer mat for the vehicle comprises a mat body, the left side of the mat body is fixedly connected with a side extension edge, and the upper side of the mat body is fixedly connected with an upper extension edge. Meanwhile, a lower extending edge is fixedly connected to the lower side of the pedal mat body, a pedal mat structure is arranged on the surface of the pedal mat body, multiple sets of anti-skid particles are evenly and fixedly connected to the bottom of the pedal mat structure, and the friction force between the pedal mat structure and the compartment bottom plate can be enhanced through the arrangement of the anti-skid particles, so that the probability of sliding between the pedal mat structure and the compartment bottom plate is reduced.

Description

Technical Field

[0001] The invention relates to the field of vulcanized plastic products, in particular to a prefabricated TPV thermoplastic elastomer tread pad for a vehicle and a production process thereof. Background Art

[0002] Urban rail transit is a vehicle transportation system that uses a track structure for load-bearing and guidance. According to the requirements of the overall urban transportation plan, a fully or partially enclosed dedicated rail line is set up to transport a considerable amount of passenger flow in the form of trains or single vehicles as a public transportation mode. The "Urban Public Transportation Classification Standard" also clearly states that urban rail transit includes: subway system, light rail system, monorail system, tram, maglev system, automatic guided rail system, urban rapid rail system; in addition, with the development of transportation systems, some other new transportation systems have emerged; urban rail transit refers to a vehicle transportation system that uses a track structure for load-bearing and guidance. According to the requirements of the overall urban transportation plan, a fully or partially enclosed dedicated rail line is set up to transport a considerable amount of passenger flow in the form of trains or single vehicles as a public transportation mode; such as the city's subway or light rail system, tram, etc.

[0003] Rail transit has appeared in cities as public transportation for a long time and plays an increasingly important role. The use of urban rail transit (subway and light rail) systems with large passenger volumes is the effective way to fundamentally improve the conditions of urban public transportation. The floor mat is the easiest to get dirty in a car; it comes into direct contact with shoes and will absorb rainwater from shoes on rainy days.

[0004] The foot mat is laid on the floor inside the car. When passengers step on it, it is easy for them to slip, which is very dangerous. Summary of the invention

[0005] The purpose of the present invention is to provide a prefabricated TPV thermoplastic elastomer tread pad for a vehicle and a production process thereof.

[0006] The present invention is achieved through the following technical solutions.

[0007] A production process of a prefabricated TPV thermoplastic elastomer tread pad for a vehicle, the production method comprising the following steps: batching, feeding, adding a softener, adding a vulcanizer, heating, stirring and mixing, feeding into an injection molding extruder and forming by a mold; Step A. Mixing: weighing polyisoprene, accelerator TMTD, synthetic rubber raw materials, and methylpropane methacrylate according to the feeding ratio; Step B. Adding materials: 1000 kg of synthetic rubber raw materials and 56 kg of methyl propane methacrylate are added into the vulcanization tank, and after stirring and heating, the mixture is heated to the temperature until the material a is obtained; Step C. Adding a softener: 20 kg of polyisoprene softener is added to the vulcanization tank where material a is located, the vulcanization tank is stirred and heated, the temperature inside the vulcanization tank is between 80 and 100°, and polyisoprene is stirred and mixed with material a to form material b; Step D. Adding a vulcanizing agent: 28 kg of accelerator TMTD is added to the vulcanization tank where material b is located, the vulcanization tank is stirred and heated, and the temperature inside the vulcanization tank is maintained between 90 and 100°. Material b and accelerator TMTD are stirred and mixed to form material c; Step E. Heating and stirring: Stir material c in the autoclave for 35 minutes and heat to 110°; Step F. Putting into injection molding extruder: adding material c into the material trough of the extruder, and extruding into the mold cavity in the mold through the double screw; Step G: Mold forming: Material c is formed inside the mold.

[0008] A prefabricated TPV thermoplastic elastomer mat for a vehicle comprises a mat body, wherein a side extension is fixedly connected to the left side of the mat body, an upper extension is fixedly connected to the upper side of the mat body, and a lower extension is fixedly connected to the lower side of the mat body; a mat structure is arranged on the surface of the mat body, and a reinforcing pad is arranged on the bottom of the mat structure; a left tread area is arranged on the upper left side of the mat structure, and a right tread area is arranged on the upper right side of the mat structure; and a rim is fixedly connected to the circumferential position of the mat body.

[0009] Preferably, the side edges, the lower edges and the upper edges are all semicircular structures, and a plurality of groups of arc-shaped wear-resistant strips are fixedly connected to the surfaces of the side edges, the lower edges and the upper edges.

[0010] Preferably, the tread mat body is composed of five parts: a tread mat structure, a reinforcement pad, a side extension, a lower extension and an upper extension, and a cavity is opened inside the reinforcement pad.

[0011] Preferably, two groups of stress-bearing grooves are provided in the lower side wall of the tread pad body, and the two groups of stress-bearing grooves are symmetrical structures about the lower extended edge.

[0012] Preferably, a friction strip is fixedly connected to the upper surface of the tread mat body, and the friction strip is arranged in a "V" shape.

[0013] Preferably, a plurality of groups of anti-slip particles are fixedly connected to the lower surface of the tread mat body, and the cross-section of the anti-slip particles is arranged in an isosceles trapezoidal shape.

[0014] A production process of a prefabricated TPV thermoplastic elastomer tread mat for a vehicle is used in a prefabricated TPV thermoplastic elastomer tread mat for a vehicle.

[0015] The invention discloses a TPV thermoplastic elastomer tread mat to be produced by adopting a production process of a prefabricated TPV thermoplastic elastomer tread mat for a vehicle.

[0016] It can be seen from the above technical solutions that the beneficial effects of the present invention are: 1. Two sets of upper extensions are arranged on the upper side of the mat structure, and a set of lower extensions are arranged on the lower side of the mat structure. At the same time, side extensions are arranged on both sides of the mat structure. The extensions are arranged in a semicircular shape, which can increase the aesthetics of the mat structure. 2. Multiple groups of anti-skid particles are evenly and fixedly connected to the bottom of the mat structure. The setting of the anti-skid particles can enhance the friction between the mat structure and the bottom plate of the carriage, so as to reduce the probability of sliding between the mat structure and the bottom plate of the carriage; 3. The two groups of stress-bearing grooves are symmetrical about the lower extension; a friction strip is fixedly connected to the upper surface of the mat body, and the friction strip is arranged in a "V" shape. The "V"-shaped friction strip can increase the friction between the mat body and the bottom of the shoe when the passenger steps on it, so that the passenger stands on the mat body more steadily and is not easy to slip. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view schematic diagram of the structure of the present invention; Figure 2 The structure of the present invention Figure 1 Schematic cross-sectional view of ; Figure 3 It is a schematic diagram of the AA section of the structure of the present invention; Figure 4 A three-dimensional diagram of the structure of the tread mat of the present invention; Figure 5 The structure of the present invention Figure 3 A magnified schematic diagram of the local structure; Figure 6 The structure of the present invention Figure 1 Bottom view of Figure 7 The structure of the present invention Figure 4 Top view of the .

[0018] Numbers in the figure: 1. Side extension; 2. Mat body; 3. Left tread area; 4. Mat structure; 5. Friction strip; 6. Wear-resistant strip; 7. Lower extension; 8. Right tread area; 9. Edge wrapping; 10. Upper extension; 11. Anti-slip particles; 12. Reinforcement pad; 13. Cavity; 14. Stress groove. DETAILED DESCRIPTION

[0019] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention. The implementation conditions used in the examples can be further adjusted according to the conditions of the manufacturer, and the implementation conditions not described are usually conventional experimental conditions. Example

[0020] A production process of a prefabricated TPV thermoplastic elastomer mat for a vehicle, the production method comprising the following steps: batching, feeding, adding a softener, adding a vulcanizer, heating, stirring and mixing, feeding into an injection molding extruder and molding, characterized in that: Step A. Mixing: weighing polyisoprene, accelerator TMTD, synthetic rubber raw materials, and methylpropane methacrylate according to the feeding ratio; Step B. Adding materials: 1000 kg of synthetic rubber raw materials and 56 kg of methyl propane methacrylate are added into the vulcanization tank, and after stirring and heating, the mixture is heated to the temperature until the material a is obtained; Step C. Adding a softener: 20 kg of polyisoprene softener is added to the vulcanization tank where material a is located, the vulcanization tank is stirred and heated, the temperature inside the vulcanization tank is between 80 and 100°, and polyisoprene is stirred and mixed with material a to form material b; Step D. Adding a vulcanizing agent: 28 kg of accelerator TMTD is added to the vulcanization tank where material b is located, the vulcanization tank is stirred and heated, and the temperature inside the vulcanization tank is maintained between 90 and 100°. Material b and accelerator TMTD are stirred and mixed to form material c; Step E. Heating and stirring: Stir material c in the autoclave for 35 minutes and heat to 110°; Step F. Putting into injection molding extruder: adding material c into the material trough of the extruder, and extruding into the mold cavity in the mold through the double screw; Step G: Mold forming: Material c is formed inside the mold.

[0021] like Figure 1—7 shows: a prefabricated TPV thermoplastic elastomer mat for vehicles, comprising a mat body 2, a side extension 1 fixedly connected to the left side of the mat body 2, an upper extension 10 fixedly connected to the upper side of the mat body 2, and a lower extension 7 fixedly connected to the lower side of the mat body 2, a mat structure 4 is arranged on the surface of the mat body 2, and a reinforcing pad 12 is arranged at the bottom of the mat structure 4, a left tread area 3 is arranged on the upper left side of the mat structure 4, and a right tread area 8 is arranged on the upper right side of the mat structure 4, and a rim 9 is fixedly connected to the circumferential position of the mat body 2; a plurality of groups of anti-skid particles 11 are fixedly connected to the lower surface of the mat body 2, and the anti-skid particles 1 1 has a cross-section of an isosceles trapezoid; the side extension 1, the lower extension 7 and the upper extension 10 are all semicircular structures, and the surfaces of the side extension 1, the lower extension 7 and the upper extension 10 are fixedly connected with a plurality of arc-shaped wear-resistant strips 6; the mat body 2 is composed of a mat structure 4, a reinforcement pad 12, a side extension 1, the lower extension 7 and the upper extension 10, and a cavity 13 is provided inside the reinforcement pad 12; two groups of force grooves 14 are provided in the lower side wall of the mat body 2, and the two groups of force grooves 14 are symmetrical structures about the lower extension 7; a friction strip 5 is fixedly connected to the upper surface of the mat body 2, and the friction strip 5 is "V"-shaped.

[0022] like Figure 1-2 and Figure 4 As shown: two groups of upper extensions 10 are arranged on the upper side of the mat structure 4, and a group of lower extensions 7 are arranged on the lower side of the mat structure 4. At the same time, side extensions 1 are arranged on both sides of the mat structure 4. The extensions are arranged in a semicircular shape, which can increase the aesthetics of the mat structure 4 and make it cute.

[0023] The mat structure 4 is laid inside the carriage, and a plurality of anti-skid particles 11 are evenly and fixedly connected to the bottom of the mat structure 4. The anti-skid particles 11 can enhance the friction between the mat structure 4 and the carriage floor to reduce the probability of sliding between the mat structure 4 and the carriage floor. At the same time, the left step area 3 and the right step area 8 are sequentially arranged on the upper side of the mat body 2. One mat body 2 can accommodate two passengers to stand at the same time. At the same time, the left step area 3, the right step area 8 and the surface of the mat structure 4 are fixedly connected with friction strips 5 to prevent passengers from slipping when standing on the surface of the mat structure 4. A production process of a prefabricated TPV thermoplastic elastomer mat for a vehicle is used to produce and process the TPV thermoplastic elastomer mat. When the mat structure 4 is manufactured, polyisoprene is mixed inside it. Polyisoprene can reduce the hardness of the vulcanized rubber product. The softening effect is better when polyisoprene is used as a softener. Polyisoprene is generally a flaky solid with a relative density of 0.94, a refractive index of 1.522, an elastic modulus of 2-4MPa, softens at 130-140°C, becomes sticky and soft at 150-160°C, and begins to degrade at 200°C. It has high elasticity and slight plasticity at room temperature, and crystallizes and hardens at low temperature. It has good alkali resistance, but not strong acid resistance. It is insoluble in water, low-level ketones and alcohols, and can swell in non-polar solvents such as chloroform, carbon tetrachloride, etc. At the same time, the accelerator TMTD is used as a vulcanizing agent to enhance the vulcanization effect of the rubber in the manufacturing process. TMTD :Used as a super vulcanization accelerator, it is often used in combination with thiazole accelerators, and can also be used in combination with other accelerators as an accelerator for continuous rubber materials; because it slowly decomposes and releases free sulfur at above 100°C, it can be used for vulcanization; at the same time, methyl propane methacrylate is used as a vulcanizing agent. When vulcanizing synthetic rubber, the use of bridging agents can improve corrosion resistance, aging resistance and heat resistance, and can absorb the odor produced by synthetic rubber during vulcanization, accelerate the vulcanization rate, and the bridging agent can transform linear polymers into compounds with three-dimensional network structures; it is often a substance containing multiple functional groups in the molecule, such as sulfur or peroxide (also called vulcanizing agent) used in rubber; dibasic acid or diamine (also called curing agent) used in epoxy resin; vinyl monomers (such as styrene, methyl methacrylate) used in unsaturated polyesters, etc.; it is also called a curing agent when used for resin cross-linking, and a vulcanizing agent when used for rubber cross-linking.

[0024] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should fall within the protection scope of the present invention.

Claims

1. A production process of a prefabricated TPV thermoplastic elastomer mat for a vehicle, the production method comprising the following steps: batching, feeding, adding a softener, adding a vulcanizer, heating and stirring, mixing, feeding into an injection molding extruder and molding, characterized in that: Step A. Mixing: weighing polyisoprene, accelerator TMTD, synthetic rubber raw materials, and methylpropane methacrylate according to the feeding ratio; Step B. Adding materials: 1000 kg of synthetic rubber raw materials and 56 kg of methyl propane methacrylate are added into the vulcanization tank, and after stirring and heating, the mixture is heated to the temperature until the material a is obtained; Step C. Adding a softener: 20 kg of polyisoprene softener is added to the vulcanization tank where material a is located, the vulcanization tank is stirred and heated, the temperature inside the vulcanization tank is between 80 and 100°, and polyisoprene is stirred and mixed with material a to form material b; Step D. Adding a vulcanizing agent: 28 kg of accelerator TMTD is added to the vulcanization tank where material b is located, the vulcanization tank is stirred and heated, and the temperature inside the vulcanization tank is maintained between 90 and 100°. Material b and accelerator TMTD are stirred and mixed to form material c; Step E. Heating and stirring: Stir material c in the autoclave for 35 minutes and heat to 110°; Step F. Putting into injection molding extruder: adding material c into the material trough of the extruder, and extruding into the mold cavity in the mold through the double screw; Step G: Mold forming: Material c is formed inside the mold.

2. A prefabricated TPV thermoplastic elastomer mat for a vehicle, comprising a mat body (2), characterized in that: The left side of the mat body (2) is fixedly connected to a side extension (1), and the upper side of the mat body (2) is fixedly connected to an upper extension (10), and the lower side of the mat body (2) is fixedly connected to a lower extension (7). The surface of the mat body (2) is provided with a mat structure (4), and the bottom of the mat structure (4) is provided with a reinforcement pad (12). The upper left side of the mat structure (4) is provided with a left tread area (3), and the upper right side of the mat structure (4) is provided with a right tread area (8). The circumferential position of the mat body (2) is fixedly connected to a rim (9).

3. The prefabricated TPV thermoplastic elastomer mat for a vehicle according to claim 2, characterized in that: The side extension (1), the lower extension (7) and the upper extension (10) are all semicircular structures, and the surfaces of the side extension (1), the lower extension (7) and the upper extension (10) are all fixedly connected with a plurality of groups of arc-shaped wear-resistant strips (6).

4. The prefabricated TPV thermoplastic elastomer mat for a vehicle according to claim 2, characterized in that: The tread pad body (2) is composed of five parts: a tread pad structure (4), a reinforcement pad (12), a side extension (1), a lower extension (7) and an upper extension (10), and a cavity (13) is provided inside the reinforcement pad (12).

5. The prefabricated TPV thermoplastic elastomer mat for a vehicle according to claim 2, characterized in that: Two groups of stress-bearing grooves (14) are provided in the lower side wall of the pedal mat body (2), and the two groups of stress-bearing grooves (14) are symmetrical structures with respect to the lower extended edge (7).

6. The prefabricated TPV thermoplastic elastomer mat for a vehicle according to claim 2, characterized in that: A friction strip (5) is fixedly connected to the upper surface of the tread pad body (2), and the friction strip (5) is arranged in a "V" shape.

7. The prefabricated TPV thermoplastic elastomer mat for a vehicle according to claim 2, characterized in that: A plurality of groups of anti-slip particles (11) are fixedly connected to the lower surface of the tread mat body (2), and the cross-section of the anti-slip particles (11) is arranged in an isosceles trapezoidal shape.

8. Application of a production process of a prefabricated TPV thermoplastic elastomer tread mat for a vehicle in a prefabricated TPV thermoplastic elastomer tread mat for a vehicle.

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