Novel static conductive environment-friendly traceless solid tire

Abstract

The technical scheme of the invention discloses a novel static conductive environment-friendly traceless solid tire. The solid tire comprises a traceless tread rubber layer, a static conductive buffer rubber layer, a static conductive base rubber layer, traceless tread rubber pattern blocks and a static conductive path structure, the traceless tread rubber layer, the static buffer rubber layer and the static conductive base rubber layer are all of an annular structure and are sequentially arranged from outside to inside, the traceless tread rubber pattern block is arranged on the outer side of the traceless tread rubber layer, and the static conductive path structure extends inwards from the surface of the traceless tread rubber pattern block to the static conductive buffer rubber layer. The static electricity conduction buffer rubber layer, the static electricity conduction base rubber layer, the static electricity conduction path structure and the static electricity conduction rim form a three-dimensional conductive net-shaped path, so that static electricity of the tire is effectively guided out.

Description

Technical Field

[0001] The invention relates to the technical field of tires, and in particular to a novel static-conducting, environment-friendly, traceless solid tire. Background Art

[0002] At present, the working conditions of industrial vehicles are complicated. During the driving process of many industrial vehicles, the tires are constantly in contact with the ground during the rolling process and then separated. Each separation may take away part of the charge, resulting in the gradual accumulation of charge to generate static electricity, which will pose a great hidden danger to production safety. Static-conducting tires are needed to timely conduct the released static electricity to the ground to ensure the safety of vehicle driving. Usually, it is necessary to hang iron chains or conductive rubber belts behind the vehicle body to release static electricity. The iron chains or conductive rubber belts need to be inspected and replaced, and the static-conducting performance is poor. The main component of tires is rubber, but rubber is a poor conductor of static electricity. The tires need to be improved to effectively conduct static electricity to the ground. At present, the appearance of various forms of tires is the largest, and black tires can be improved by adding dark static-conducting materials to help tires release static electricity. It is theoretically difficult to achieve static-conducting performance for light-colored non-marking tires (such as white, light gray, light yellow, etc.). At present, there are no light-colored non-marking static-conducting tires that meet the requirements.

[0003] Patent CN 109694507 A discloses a static conductive solid tread rubber formula, which includes, by weight, 100 parts of natural rubber, 20-30 parts of conductive carbon black, 30-35 parts of carbon black, 6-7 parts of zinc oxide, 2.5-3 parts of stearic acid, 2-2.5 parts of antioxidant, 9-10 parts of environmentally friendly cycloalkyl oil, 3-5 parts of single-walled carbon nanotubes, 0.8-1.1 parts of anti-vulcanization reversion accelerator, 1.5-2 parts of sulfur powder, and 2-2.5 parts of accelerator, to achieve good static conductive performance. However, the prepared tire is a black tire and cannot be used for light-colored non-marking tires. Therefore, it is necessary to develop a non-marking solid tire that can have good static conductive performance. Summary of the invention

[0004] In order to solve the existing technical problems, the present invention provides a new type of electrostatically conductive, environmentally friendly, traceless solid tire, which effectively realizes the static electricity conduction of the tire by forming a three-dimensional conductive mesh path through an electrostatically conductive buffer rubber layer, an electrostatically conductive base rubber layer, an electrostatically conductive path structure and an electrostatically conductive rim.

[0005] The technical solution of the present invention is: a new type of static conductive and environmentally friendly traceless solid tire, which includes a traceless tread rubber layer, a static conductive buffer rubber layer, a static conductive base rubber layer, traceless tread rubber tread blocks, and a static conductive path structure; the traceless tread rubber layer, the static conductive buffer rubber layer, and the static conductive base rubber layer are all annular structures and are arranged in sequence from outside to inside. The traceless tread rubber tread blocks are arranged on the outside of the traceless tread rubber layer, and the static conductive path structure extends inward from the surface of the traceless tread rubber tread blocks to the static conductive buffer rubber layer.

[0006] Further, a static conductive rim is arranged inside the static conductive base rubber layer, and a high-strength steel wire ring is arranged on the side closer to the static conductive rim inside the static conductive base rubber layer.

[0007] Further, the static conductive rim is subjected to micro-arc oxidation treatment, and a conductive epoxy primer is sprayed on the surface of the static conductive rim.

[0008] Further, a first connection layer is arranged between the traceless tread rubber layer and the static conductive buffer rubber layer, and a second connection layer is arranged between the static conductive buffer rubber layer and the static conductive base rubber layer.

[0009] Further, the traceless tread rubber layer comprises the following raw materials in parts by weight: 70-90 parts of natural rubber NR, 20-30 parts of solution styrene-butadiene rubber, 40-60 parts of white carbon black, 6-10 parts of vegetable oil-based softener, and 2-4 parts of anti-aging agent.

[0010] Further, the anti-aging agent of the traceless tread rubber layer is a bisphenol-based anti-aging agent.

[0011] Further, the static conductive buffer rubber layer comprises the following raw materials in parts by weight: 80-100 parts of natural rubber NR, 40-53 parts of conductive carbon black, 2-3 parts of ionic liquid-based static conductive agent, 1-2 parts of single-walled carbon nanotubes, 3-5 parts of nano-zinc oxide, and 1.5-3.0 parts of coupling agent Si69.

[0012] Further, the static conductive base rubber layer comprises the following raw materials in parts by weight: 60-80 parts of natural rubber NR, 30-40 parts of rare earth cis-1,4-polybutadiene, 40-48 parts of conductive carbon black, 2-3 parts of ionic liquid-based static conductive agent, 70-80 parts of high-structured semi-reinforcing furnace black + 10-15 parts of precipitated white carbon black.

[0013] Further, the ionic liquid-based static conductive agent is 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide.

[0014] Further, the static conductive path structure is static conductive rubber, and the structure is cylindrical.

[0015] Adopting the above technical solution, the beneficial effects achieved by the present invention are as follows: (1) The present invention firstly creates an electrostatic conductive gradient structure composed of an electrostatic conductive buffer rubber layer, an electrostatic conductive base rubber layer, an electrostatic conductive path structure, and an electrostatic conductive rim, forming a three-dimensional conductive network path, achieving excellent electrostatic discharge effect for the seamless tire, and effectively realizing the release of tire static electricity; the surface resistance of the tire < 10 6 Ω, and the resistance value is lower than the regulation of GB / T 19854-2018: when the relative humidity is 50%, the surface resistance is not greater than 10 6 Ohm, achieving a breakthrough in the field; the electrostatic discharge efficiency meets the requirements of the EN13450 standard, and the discharge energy can be effectively suppressed to < 0.1mJ in flammable and explosive environments, and the electrostatic conductive performance conforms to the ISO20274:2017 electrostatic conductive tire specification.

[0016] (2) Through a composite conductive system composed of single-walled carbon nanotubes, conductive carbon black, and ionic liquid-based electrostatic conductive agents, the technical bottleneck of high interfacial impedance of traditional single conductive materials is broken through, and good electrostatic conductive effect is achieved.

[0017] (3) The dynamic conductive stability of the tire is excellent. The resistance change rate in the drum test < 20%, and the surface potential half-life of the tire < 0.5s, meeting the ISO 18080 standard and exceeding the requirements of the GB / T 26277-2010 standard.

[0018] (4) The seamless tread rubber layer of the electrostatic conductive and environmentally friendly seamless solid tire of the present invention realizes zero release of harmful substances, the dispersion degree of white carbon black reaches more than 98.0%, the vegetable oil-based softener replaces the petroleum-based aromatic oil, and the environmental performance detection of the tire meets the requirements of the EU REACH SVHC substances of very high concern.

[0019] (5) The materials of the electrostatic conductive and environmentally friendly seamless solid tire of the present invention have a strong and tough balance and good structural durability. The mechanical properties of the tire are good. The tensile strength of the seamless tread rubber layer reaches 25MPa, the elongation at break ≥ 460%, and the tear strength ≥ 90KN / m; the electrostatic conductive base rubber layer is compounded with rare earth cis-butadiene rubber and highly structured semi-reinforcing furnace black, and the dynamic heat generation is reduced by 30%. The mechanical properties of the tire meet the tire standard of GB / T 10824-2022, and the micro-arc oxidation layer of the electrostatic conductive rim is tested by ASTM B117, and the salt spray resistance test > 500 hours; the durability performance of the tire meets the requirements of GB / T 22391-2017.

[0020] (6) The process compatibility of the electrostatic conductive and environmentally friendly seamless solid tire of the present invention is strong. The Mooney viscosity of the seamless tread rubber layer is controlled at 55~65ML(1+4), matching the traditional process parameters.

[0021] (7) Low cost, significantly reducing the usage amount of conductive materials such as single-walled carbon nanotubes compared with the prior art, extending the service life of the tire, and the abrasion amount of the non-marking tread rubber layer ≤ 0.50 cm³ / 1.61 km (Akron). BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a physical structure diagram of the present invention.

[0023] In the figure, 1, non-marking tread rubber layer; 2, static conductive buffer rubber layer; 3, static conductive base rubber layer; 4, non-marking tread rubber tread block; 5, static conductive path structure; 6, static conductive rim; 7, high-strength steel wire ring; 8, first connection layer; 9, second connection layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The present invention will be further described in detail below in conjunction with specific embodiments. Embodiment

[0025] Referring to Figure 1-2 As shown, a new type of static conductive and environmentally friendly non-marking solid tire includes a non-marking tread rubber layer, a static conductive buffer rubber layer, a static conductive base rubber layer, a non-marking tread rubber tread block, and a static conductive path structure; the non-marking tread rubber layer, the static conductive buffer rubber layer, and the static conductive base rubber layer are all annular structures and are arranged in sequence from outside to inside. The non-marking tread rubber tread block is arranged on the outside of the non-marking tread rubber layer, and the static conductive path structure extends from the surface of the non-marking tread rubber tread block inward to the static conductive buffer rubber layer.

[0026] The non-marking tread rubber tread block is in direct contact with the ground, and the static conductive path structure is in direct contact with the ground, and the static electricity generated by the tire is discharged in time.

[0027] Further, a static conductive rim is arranged inside the static conductive base rubber layer, and a high-strength steel wire ring is arranged on the side of the inside of the static conductive base rubber layer that is closer to the static conductive rim. The tire is fixed on the static conductive rim through the high-strength steel wire ring.

[0028] The present invention forms a complete static conductive network combination through the static conductive buffer rubber layer, the static conductive base rubber layer, the static conductive path structure, and the static conductive rim, and can discharge the static electricity generated by the tire in time to avoid safety accidents caused by static electricity accumulation.

[0029] Further, the static conductive rim is subjected to micro-arc oxidation treatment, and a conductive epoxy primer is sprayed on the surface of the static conductive rim.

[0030] The static conductive rim of this Embodiment 1 is made of aluminum alloy material. After micro-arc oxidation treatment, the rim film thickness is 30 μm and contains conductive channels. The volume resistivity of the rim after spraying the conductive epoxy primer on the surface is < 104 Ω·cm.

[0031] Further, a first connection layer is provided between the traceless tread rubber layer and the antistatic buffer rubber layer, and a second connection layer is provided between the antistatic buffer rubber layer and the antistatic base rubber layer.

[0032] Further, the traceless tread rubber layer comprises the following raw materials in parts by weight: 80 parts of natural rubber NR (RSS3# smoked sheet), 20 parts of solution-polymerized styrene-butadiene rubber (SSBR SE-6233), 40 parts of white carbon black (VN3), 8 parts of vegetable oil-based softener (Dura99), and 3 parts of bisphenol antioxidant (2246S).

[0033] In the formula of the traceless tread rubber layer, natural rubber NR and solution-polymerized styrene-butadiene rubber are used as the base materials, and white carbon black, vegetable oil-based softener and antioxidant are used as functional additives.

[0034] Further, the antistatic buffer rubber layer comprises the following raw materials in parts by weight: 100 parts of natural rubber NR (RSS3#), 50 parts of conductive carbon black (XC72), 3 parts of ionic liquid-based antistatic agent (1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide), 1 part of single-walled carbon nanotube (TUBALL), 3 parts of nano zinc oxide (Longda), and 2 parts of coupling agent Si69 (Degussa).

[0035] In the formula of the antistatic buffer rubber layer, natural rubber NR is used as the base material, conductive carbon black, ionic liquid-based antistatic agent and single-walled carbon nanotube form the conductive system, and nano zinc oxide and coupling agent Si69 form the active system.

[0036] Further, the antistatic base rubber layer comprises the following raw materials in parts by weight: 70 parts of natural rubber NR (RSS3#), 30 parts of rare earth cis-1,4-polybutadiene (CB22), 45 parts of conductive carbon black (XC72), 3 parts of ionic liquid-based antistatic agent (1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide), 70 parts of high-structure semi-reinforcing furnace black (N774), and 13 parts of precipitated white carbon black (VN3).

[0037] In the formula of the antistatic base rubber layer, natural rubber NR and rare earth cis-1,4-polybutadiene are used as the base materials, conductive carbon black and ionic liquid-based antistatic agent form the conductive system, and high-structure semi-reinforcing furnace black and precipitated white carbon black form the reinforcing system.

[0038] Furthermore, the static conductive path structure is made of static conductive rubber and has a cylindrical structure. The static conductive path structure is grounded through a circular end face and is in direct contact with the ground to promptly conduct static electricity. In this Example 1, black static conductive rubber with a diameter of 50 mm is selected. Remove the oxide layer and coating on the surface of the static conductive rim to expose the metal substrate and reduce the contact resistance. Then, use a VICTOR VC60B resistance detector to measure the resistance of the tire and the static conductive rim system in Example 1 to ensure that the insulation resistance is less than 10 6 ohms.

[0039] By adding a new type of conductive material (ionic liquid-based static conductive agent), setting up a static conductive buffer rubber layer and a static conductive base rubber layer, setting up a static conductive path structure, and designing a static conductive network assembly, the static conductive and environmentally friendly non-marking solid tire of the present invention effectively realizes the release of tire static electricity. While maintaining the mechanical properties of the tire, the static electricity release efficiency of the tire meets the requirements of the EN13450 standard, and it is especially suitable for explosion-proof special vehicles in fields such as petrochemical industry, aviation ground service, and military warehousing, with significant economic benefits and social safety value. Example

[0040] Refer to Figure 1-2 As shown, a new type of static conductive and environmentally friendly non-marking solid tire includes a non-marking tread rubber layer, a static conductive buffer rubber layer, a static conductive base rubber layer, non-marking tread rubber tread blocks, and a static conductive path structure; the non-marking tread rubber layer, the static conductive buffer rubber layer, and the static conductive base rubber layer are all annular structures and are arranged in sequence from outside to inside. The non-marking tread rubber tread blocks are arranged on the outside of the non-marking tread rubber layer, and the static conductive path structure extends inward from the surface of the non-marking tread rubber tread blocks to the static conductive buffer rubber layer.

[0041] Furthermore, a static conductive rim is arranged inside the static conductive base rubber layer, and a high-strength steel wire ring is arranged on the side of the inside of the static conductive base rubber layer that is closer to the static conductive rim. The high-strength steel wire ring ensures that the tire is fixed on the static conductive rim.

[0042] Furthermore, the static conductive rim is subjected to micro-arc oxidation treatment, and a conductive epoxy primer is sprayed on the surface of the static conductive rim.

[0043] The static conductive rim in this Example 2 is made of aluminum alloy material. The thickness of the rim film after micro-arc oxidation treatment is 20 μm and it contains conductive channels. The volume resistivity of the rim after spraying the conductive epoxy primer on the surface is <10 4 Ω·cm.

[0044] Furthermore, a first connection layer is arranged between the non-marking tread rubber layer and the static conductive buffer rubber layer, and a second connection layer is arranged between the static conductive buffer rubber layer and the static conductive base rubber layer.

[0045] Further, the traceless tread rubber layer comprises raw materials in the following parts by weight: 70 parts of natural rubber NR, 30 parts of solution-polymerized styrene-butadiene rubber, 60 parts of white carbon black, 6 parts of vegetable oil-based softener, and 2 parts of bisphenol anti-aging agent.

[0046] The natural rubber NR is RSS3# smoked sheet, the solution-polymerized styrene-butadiene rubber is SSBR SE-6233, the white carbon black is VN3, the vegetable oil-based softener is Dura99, and the bisphenol anti-aging agent is 2246S.

[0047] Further, the electrostatic conductive buffer rubber layer comprises raw materials in the following parts by weight: 80 parts of natural rubber NR, 40 parts of conductive carbon black, 2 parts of 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, 2 parts of single-walled carbon nanotubes, 5 parts of nano zinc oxide, and 1.5 parts of coupling agent Si69.

[0048] The natural rubber NR is RSS3#, the conductive carbon black is XC72, the single-walled carbon nanotubes are TUBALL, the nano zinc oxide is a product of Longda, and the coupling agent Si69 is a product of Degussa.

[0049] Further, the electrostatic conductive base rubber layer comprises raw materials in the following parts by weight: 60 parts of natural rubber NR, 40 parts of rare earth cis-1,4-polybutadiene, 40 parts of conductive carbon black, 2 parts of 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, 80 parts of high structure semi-reinforcing furnace black, and 10 parts of precipitated white carbon black.

[0050] The natural rubber NR is RSS3#, the rare earth cis-1,4-polybutadiene is CB22, the conductive carbon black is XC72, the high structure semi-reinforcing furnace black is N774, and the precipitated white carbon black is VN3.

[0051] Further, the electrostatic conductive path structure is made of electrostatic conductive rubber and has a cylindrical structure. The electrostatic conductive path structure is grounded through a circular end face and is in direct contact with the ground to timely conduct the static electricity. In this Example 2, black electrostatic conductive rubber with a diameter of 30 mm is selected. Example

[0052] Refer to Figure 1-2 As shown, a new type of electrostatic conductive and environment-friendly traceless solid tire comprises a traceless tread rubber layer, an electrostatic conductive buffer rubber layer, an electrostatic conductive base rubber layer, traceless tread rubber tread blocks, and an electrostatic conductive path structure; the traceless tread rubber layer, the electrostatic conductive buffer rubber layer, and the electrostatic conductive base rubber layer are all annular structures and are arranged in sequence from outside to inside. The traceless tread rubber tread blocks are arranged on the outside of the traceless tread rubber layer, and the electrostatic conductive path structure extends inward from the surface of the traceless tread rubber tread blocks to the electrostatic conductive buffer rubber layer.

[0053] Further, an electrostatic conductive rim is provided on the inner side of the electrostatic conductive base rubber layer, and a high-strength steel wire ring is provided on the side closer to the electrostatic conductive rim inside the electrostatic conductive base rubber layer. The high-strength steel wire ring ensures that the tire is fixed on the electrostatic conductive rim.

[0054] Further, the electrostatic conductive rim is subjected to micro-arc oxidation treatment, and a conductive epoxy primer is sprayed on the surface of the electrostatic conductive rim.

[0055] The electrostatic conductive rim of this Embodiment 3 is made of aluminum alloy material. After micro-arc oxidation treatment, the rim film thickness is 35 μm and it contains conductive channels. The volume resistivity of the rim after spraying the conductive epoxy primer on the surface is < 10 4 Ω·cm.

[0056] Further, a first connection layer is provided between the non-marking tread rubber layer and the electrostatic conductive buffer rubber layer, and a second connection layer is provided between the electrostatic conductive buffer rubber layer and the electrostatic conductive base rubber layer.

[0057] Further, the non-marking tread rubber layer comprises the following raw materials in parts by weight: 90 parts of natural rubber NR, 20 parts of solution-polymerized styrene-butadiene rubber, 50 parts of white carbon black, 10 parts of vegetable oil-based softener, and 4 parts of bisphenol anti-aging agent.

[0058] The natural rubber NR is RSS3# smoked sheet, the solution-polymerized styrene-butadiene rubber is SSBR SE-6233, the white carbon black is VN3, the vegetable oil-based softener is Dura99, and the bisphenol anti-aging agent is 2246S.

[0059] Further, the electrostatic conductive buffer rubber layer comprises the following raw materials in parts by weight: 90 parts of natural rubber NR, 53 parts of conductive carbon black, 2.5 parts of 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide, 1 part of single-walled carbon nanotube, 4 parts of nano-zinc oxide, and 3.0 parts of coupling agent Si69.

[0060] The natural rubber NR is RSS3#, the conductive carbon black is XC72, the single-walled carbon nanotube is TUBALL, the nano-zinc oxide is a product of Longda, and the coupling agent Si69 is a product of Degussa.

[0061] Further, the electrostatic conductive base rubber layer comprises the following raw materials in parts by weight: 80 parts of natural rubber NR, 30 parts of rare earth cis-1,4-polybutadiene, 48 parts of conductive carbon black, 2 parts of 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide, 70 parts of high-structure semi-reinforcing furnace black, and 15 parts of precipitated white carbon black.

[0062] The natural rubber NR is RSS3#, the rare earth cis-1,4-polybutadiene is CB22, the conductive carbon black is XC72, the high-structure semi-reinforcing furnace black is N774, and the precipitated white carbon black is VN3.

[0063] Further, the static conductive path structure is made of static conductive rubber and has a cylindrical structure. The static conductive path structure is grounded through a circular end face and is in direct contact with the ground to timely discharge static electricity. In this Embodiment 3, black static conductive rubber with a diameter of 60 mm is selected.

Claims

1. A new type of static conductive environmentally friendly traceless solid tire, characterized by: The invention comprises a non-marking tread rubber layer (1), a static conductive buffer rubber layer (2), a static conductive base rubber layer (3), a non-marking tread rubber pattern block (4) and a static conductive path structure (5); the non-marking tread rubber layer (1), the static conductive buffer rubber layer (2) and the static conductive base rubber layer (3) are all annular structures and are arranged in sequence from the outside to the inside; the non-marking tread rubber pattern block (4) is arranged on the outside of the non-marking tread rubber layer (1); and the static conductive path structure (5) extends from the surface of the non-marking tread rubber pattern block (4) inwardly to the static conductive buffer rubber layer (3).

2. According to claim 1, the novel electrostatic conductive environmentally friendly traceless solid tire is characterized by: An electrostatic conductive wheel rim (6) is arranged on the inner side of the electrostatic conductive base rubber layer (3), and a loop of high-strength steel wire (7) is arranged on the inner side of the electrostatic conductive base rubber layer (3) closer to the electrostatic conductive wheel rim (6).

3. The novel electrostatic conductive environmentally friendly traceless solid tire according to claim 2 is characterized by: The electrostatically conductive wheel rim (6) is subjected to micro-arc oxidation treatment, and a conductive epoxy primer is sprayed on the surface of the electrostatically conductive wheel rim (6).

4. The novel electrostatic conductive environmentally friendly non-marking solid tire according to claim 1 is characterized by: A first connecting layer (8) is provided between the non-marking tread rubber layer (1) and the static conductive buffer rubber layer (2), and a second connecting layer (9) is provided between the static conductive buffer rubber layer (2) and the static conductive base rubber layer (3).

5. The novel electrostatic conductive, environmentally friendly, traceless solid tire according to claim 1, characterized in that: The non-marking tread rubber layer (1) comprises the following raw materials in parts by weight: 70-90 parts of natural rubber NR, 20-30 parts of solution-polymerized styrene-butadiene rubber, 40-60 parts of white carbon black, 6-10 parts of a vegetable oil-based softener, and 2-4 parts of an anti-aging agent.

6. The novel electrostatic conductive environmentally friendly non-marking solid tire according to claim 5 is characterized by: The anti-aging agent of the non-marking tread rubber layer (1) is a bisphenol anti-aging agent.

7. The novel electrostatic conductive, environmentally friendly, traceless solid tire according to claim 1, characterized in that: The electrostatic conductive buffer rubber layer (2) comprises the following raw materials in parts by weight: 80-100 parts of natural rubber NR, 40-53 parts of conductive carbon black, 2-3 parts of ionic liquid type electrostatic conductive agent, 1-2 parts of single-walled carbon nanotubes, 3-5 parts of nano zinc oxide and 1.5-3.0 parts of coupling agent Si69.

8. The novel electrostatic conductive, environmentally friendly, traceless solid tire according to claim 1, characterized in that: The electrostatic conductive base rubber layer (3) comprises the following raw materials in parts by weight: 60-80 parts of natural rubber NR, 30-40 parts of rare earth butadiene, 40-48 parts of conductive carbon black, 2-3 parts of ionic liquid type electrostatic conductive agent, 70-80 parts of high-structure semi-reinforced furnace black and 10-15 parts of precipitated silica.

9. A novel electrostatic conductive, environmentally friendly, traceless solid tire according to claim 7 or 8, characterized in that: The ionic liquid type static conductive agent is 1-ethyl-3-methylimidazole bis(trifluoromethanesulfonyl)imide salt.

10. The novel electrostatic conductive environmentally friendly non-marking solid tire according to claim 1 is characterized by: The electrostatic conductive path structure (5) is electrostatic conductive rubber and has a cylindrical structure.

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