Low-temperature-resistant all-terrain rubber belt and preparation method and application thereof

Abstract

The application provides a low-temperature-resistant all-terrain rubber belt and a preparation method and application thereof, and belongs to the technical field of rubber belts.The aramid fabric in the low-temperature-resistant all-terrain rubber belt has the properties of low-temperature resistance, light weight and good flexibility;the low-temperature-resistant and good smoke sheet rubber and butadiene rubber are selected in the covering rubber, the regularity of the macromolecular chain is weakened by using the two rubbers, so that the cold resistance is improved;the composition of the intermediate core rubber is controlled, so that the cold resistance of the rubber material is significantly improved;the semi-effective vulcanization system is used in the covering rubber, the generation of polysulfide bonds is reduced, mainly generating monosulfide bonds and disulfide bonds, the possibility of intramolecular combination of sulfur is reduced, so that the glass transition temperature increases at a small rate, and thus the cold resistance is improved;the structure of the rubber belt, the composition of the covering rubber and the intermediate core rubber are controlled, the cold resistance of the rubber belt is improved, the rubber belt can be used under the environment condition of-60 DEG C, and the rubber belt is thin in thickness and light in weight.

Description

Technical Field

[0001] This invention belongs to the field of rubber belt technology, specifically relating to a low-temperature resistant all-terrain rubber belt, its preparation method, and its application. Background Technology

[0002] Rubber tracks possess numerous superior properties and are widely used in various vehicles. However, they lose their elasticity and flexibility in low-temperature environments, becoming brittle and prone to breakage, rendering them unusable in low-temperature conditions. Metal (steel) rubber chain tracks combine the properties of both metal and rubber, allowing for use in certain low-temperature environments. However, at -60°C, the grain structure of steel changes, making intergranular slippage more difficult. This reduces the stiffness, plasticity, and toughness of the steel track, making it stronger yet brittle. This limits its use to environments with temperatures down to -45°C. Furthermore, its thickness and weight double, impacting the overall vehicle mobility.

[0003] Therefore, there is an urgent need for a rubber belt that can withstand low temperatures (-60℃). Summary of the Invention

[0004] The purpose of this invention is to provide a low-temperature resistant all-terrain rubber belt, its preparation method, and its applications. The rubber belt provided by this invention still exhibits excellent performance at -60℃, and is thin and lightweight.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0006] The present invention provides a low-temperature resistant all-terrain rubber belt, comprising an aramid canvas, a cover rubber covering the upper and lower surfaces of the aramid canvas, and a side rubber covering the side of the aramid canvas, wherein the aramid canvas, the cover rubber, and the side rubber are bonded together by an intermediate core rubber.

[0007] The cover rubber is obtained by vulcanizing the following raw materials through a semi-efficient vulcanization system: cis-butadiene rubber, brominated epoxy resin, smoked sheet rubber, high vinyl polybutadiene rubber, activator, accelerator, antioxidant, coupling agent, carbon nanotubes, super carbon black, softener and sulfur;

[0008] The intermediate core adhesive comprises the following components: petroleum resin, vulcanized rubber powder, short fibers, octyl adipate, silica, and coupling agent Si-69.

[0009] Preferably, the method for preparing the covering adhesive includes the following steps:

[0010] (1) The butadiene rubber, brominated epoxy resin and smoked sheet rubber are first mixed to obtain the masterbatch;

[0011] (2) The masterbatch obtained in step (1) is mixed with high vinyl polybutadiene rubber, activator, accelerator, antioxidant, coupling agent, carbon nanotube, super carbon black and softener in a second mixing process to obtain a first-stage rubber.

[0012] (3) Mix the adhesive obtained in step (2) with sulfur and vulcanize it to obtain a cover adhesive.

[0013] Preferably, in step (1), the mass percentages of butadiene rubber, brominated epoxy resin and smoked sheet rubber are 20-30%, 30-40% and 40-50%, respectively.

[0014] Preferably, in step (2), the mass ratio of masterbatch, high vinyl polybutadiene rubber, activator, accelerator, antioxidant, coupling agent, carbon nanotubes, super carbon black and softener is 100:(20-30):(10-15):(1-5):(15-20):(10-12):(25-30):(0.5-2):(0.1-1).

[0015] Preferably, in step (3), the mass ratio of a section of adhesive to sulfur is 100:(1-3).

[0016] Preferably, in step (3), the vulcanization temperature is 150-155°C, the vulcanization time is 30-40 min, and the unit surface pressure of vulcanization is 2-4 MPa.

[0017] Preferably, the mass percentages of petroleum resin, vulcanized rubber powder, short fiber, octyl adipate, silica, and coupling agent Si-69 in the intermediate core rubber are 30-35%, 20-30%, 1-10%, 1-10%, 10-12%, and 20-22%, respectively.

[0018] Preferably, the thickness of the aramid canvas is 5-7 mm, the thickness of the cover adhesive is 2-4 mm, and the thickness of the edge adhesive is 0.5-1.5 mm.

[0019] This invention also provides a method for preparing the low-temperature resistant all-terrain rubber belt described in the above technical solution, comprising the following steps:

[0020] A core adhesive is coated on the upper and lower surfaces and sides of the aramid canvas. Then, a cover adhesive is applied to the upper and lower surfaces of the aramid canvas and an edge adhesive is applied to the sides before pressing. This produces a low-temperature resistant all-terrain rubber belt.

[0021] The present invention also provides the application of the low-temperature resistant all-terrain rubber belt described in the above technical solution or the low-temperature resistant all-terrain rubber belt prepared according to the preparation method described in the above technical solution in low-temperature environments.

[0022] This invention provides a low-temperature resistant all-terrain rubber belt, comprising aramid canvas, a cover rubber covering the upper and lower surfaces of the aramid canvas, and a side rubber covering the sides of the aramid canvas. The aramid canvas, the cover rubber, and the side rubber are bonded together by an intermediate core rubber. The cover rubber comprises the following raw materials vulcanized by a semi-effective vulcanization system: cis-butadiene rubber, brominated epoxy resin, smoked sheet rubber, high-vinyl polybutadiene rubber, activator, accelerator, antioxidant, coupling agent, carbon nanotubes, supercarbon black, softener, and sulfur. The intermediate core rubber comprises the following components: petroleum resin, vulcanized rubber powder, short fibers, octyl adipate, silica, and coupling agent Si-69. The low-temperature resistant all-terrain rubber belt provided by this invention includes aramid canvas, cover rubber covering the upper and lower surfaces of the aramid canvas, and side rubber covering the sides of the aramid canvas. The aramid canvas, cover rubber, and side rubber are bonded together by an intermediate core rubber. The aramid canvas has properties such as high strength, high abrasion resistance, low-temperature resistance, light weight, and good flexibility. The cover rubber is made of smoked sheet rubber and butadiene rubber, which have good low-temperature resistance. The two rubbers are used together to weaken the regularity of the macromolecular chains, thereby improving the cold resistance. The composition of the intermediate core rubber is controlled, and reinforcing agents with good low-temperature performance (petroleum resin, vulcanized rubber powder, short fibers) are used. The invention incorporates a cold-resistant plasticizer (octyl adipate) to significantly improve the cold resistance of the rubber compound. The cover rubber is obtained through vulcanization, employing a semi-efficient vulcanization system to reduce polysulfide bond formation, primarily generating monosulfide and disulfide bonds. This reduces the likelihood of intramolecular sulfur bonding, resulting in a smaller increase in glass transition temperature and thus improved cold resistance. The silica and Si-69 in the core rubber enhance wet grip and reduce reversion. By controlling the structure of the rubber belt, the composition of the cover rubber, and the core rubber, the cold resistance of the rubber belt is improved, enabling its use in environments down to -60°C. Simultaneously, the rubber belt is thin and lightweight. The results of the embodiments show that the rubber belt provided by this invention maintains the same performance at -60°C as at room temperature, exhibiting excellent low-temperature resistance. Attached Figure Description

[0023] Figure 1 The schematic diagram of the structure of the low-temperature resistant all-terrain rubber belt provided by the present invention after being connected to the grounding frame by bolts and nuts is shown. In the diagram, 1 is the grounding frame, 2 is the low-temperature resistant all-terrain rubber belt, 3 is the bolt, and 4 is the nut.

[0024] Figure 2 This is a schematic diagram of the structure of the low-temperature resistant all-terrain rubber belt provided by the present invention;

[0025] Figure 3 This is a schematic diagram of the internal structure of the low-temperature resistant all-terrain rubber belt provided by the present invention, wherein 5 is the upper and lower cover rubber, 6 is the middle core rubber, and 7 is aramid canvas. Detailed Implementation

[0026] The present invention provides a low-temperature resistant all-terrain rubber belt, comprising an aramid canvas, a cover rubber covering the upper and lower surfaces of the aramid canvas, and a side rubber covering the side of the aramid canvas, wherein the aramid canvas, the cover rubber, and the side rubber are bonded together by an intermediate core rubber.

[0027] The cover rubber is obtained by vulcanizing the following raw materials through a semi-efficient vulcanization system: cis-butadiene rubber, brominated epoxy resin, smoked sheet rubber, high vinyl polybutadiene rubber, activator, accelerator, antioxidant, coupling agent, carbon nanotubes, super carbon black, softener and sulfur;

[0028] The intermediate core adhesive comprises the following components: petroleum resin, vulcanized rubber powder, short fibers, octyl adipate, silica, and coupling agent Si-69.

[0029] Unless otherwise specified, the present invention does not have any special limitations on the source of each component, and commercially available products well known to those skilled in the art can be used.

[0030] The low-temperature resistant all-terrain rubber belt provided by this invention includes aramid canvas. In this invention, the aramid canvas has properties such as high strength, high abrasion resistance, low-temperature resistance, light weight, and good flexibility, thereby making the rubber belt lightweight, thin, and resistant to low temperatures.

[0031] In this invention, the thickness of the aramid canvas is preferably 5-7 mm, more preferably 6 mm. By limiting the thickness of the aramid canvas within the above range, this invention can further improve the various properties of the rubber belt.

[0032] This invention does not impose any special limitations on the source of the aramid canvas; any commercially available product well-known to those skilled in the art can be used. In an embodiment of this invention, the aramid canvas is DPP2500 from Harbin North Defense Equipment Co., Ltd.

[0033] The low-temperature resistant all-terrain rubber belt provided by the present invention also includes a cover adhesive covering the upper and lower surfaces of the aramid canvas.

[0034] In this invention, the cover rubber comprises the following raw materials vulcanized by a semi-effective vulcanization system: cis-butadiene rubber, brominated epoxy resin, smoked sheet rubber, high vinyl polybutadiene rubber, activator, accelerator, antioxidant, coupling agent, carbon nanotubes, super carbon black, softener and sulfur.

[0035] In this invention, the method for preparing the covering adhesive preferably includes the following steps:

[0036] (1) The butadiene rubber, brominated epoxy resin and smoked sheet rubber are first mixed to obtain the masterbatch;

[0037] (2) The masterbatch obtained in step (1) is mixed with high vinyl polybutadiene rubber, activator, accelerator, antioxidant, coupling agent, carbon nanotube, super carbon black and softener in a second mixing process to obtain a first-stage rubber.

[0038] (3) Mix the adhesive obtained in step (2) with sulfur and vulcanize it to obtain a cover adhesive.

[0039] In this invention, butadiene rubber, brominated epoxy resin and smoked sheet rubber are first mixed to obtain masterbatch.

[0040] In this invention, the preferred mass percentages of butadiene rubber, brominated epoxy resin, and smoked sheet rubber are 20-30%, 30-40%, and 40-50%, respectively; more preferably, 20-25%, 35-40%, and 40-45%; and even more preferably, 24%, 36%, and 40%. This invention selects smoked sheet rubber and butadiene rubber, which have good low-temperature resistance, and uses both rubbers together to weaken the regularity of the macromolecular chains, thereby improving cold resistance. By controlling the mass percentages of butadiene rubber, brominated epoxy resin, and smoked sheet rubber within the above-mentioned ranges, this invention can further improve the low-temperature resistance of the rubber belt.

[0041] The present invention does not have any special limitations on the operation of the first mixing. The raw materials can be mixed evenly by using a mixing technique known to those skilled in the art.

[0042] After obtaining the masterbatch, the present invention preferably performs a second mixing with high vinyl polybutadiene rubber, activator, accelerator, antioxidant, coupling agent, carbon nanotubes, super carbon black and softener to obtain a first-stage rubber.

[0043] In this invention, the masterbatch is preferably left to stand for at least 8 hours before the second mixing. Allowing the masterbatch to stand for at least 8 hours further improves the dispersion uniformity of the raw materials.

[0044] In this invention, the activator is preferably lead oxide; the accelerator is preferably a dithiocarbamate; the antioxidant is preferably antioxidant 4010; the coupling agent is preferably a titanate coupling agent; the diameter of the carbon nanotubes is preferably 5-15 nm; the length of the carbon nanotubes is preferably 40-100 μm; and the softener is preferably paraffin oil. In an embodiment of this invention, the carbon nanotubes are from Shandong Jingshi Dazhan Nanotechnology Co., Ltd.

[0045] In this invention, the preferred mass ratio of the masterbatch, high-vinyl polybutadiene rubber, activator, accelerator, antioxidant, coupling agent, carbon nanotubes, supercarbon black, and softener is 100:(20-30):(10-15):(1-5):(15-20):(10-12):(25-30):(0.5-2):(0.1-1), more preferably 100:25:12.7:3.5:18.7:10.5:28:1.1:0.5. By limiting the mass ratio of each raw material within the above range, this invention can further improve the low-temperature resistance of the rubber belt.

[0046] The present invention does not have any special limitations on the operation of the second mixing. The raw materials can be mixed evenly by using a mixing technique known to those skilled in the art.

[0047] After obtaining a section of adhesive, the present invention preferably mixes the section of adhesive with sulfur and vulcanizes it to obtain a cover adhesive.

[0048] In this invention, the first-stage adhesive is preferably left to stand for at least 8 hours before use and then vulcanized. Allowing the first-stage adhesive to stand for at least 8 hours further improves the uniformity of dispersion of the raw materials.

[0049] In this invention, the mass ratio of the primary rubber to sulfur is preferably 100:(1-3), more preferably 100:(2-3). By controlling the mass ratio of the primary rubber to sulfur within the above range, this invention enables more complete vulcanization.

[0050] In this invention, the vulcanization temperature is preferably 150–155°C. In embodiments of this invention, the vulcanization temperature may specifically be 150°C, 151°C, 152°C, 153°C, 154°C, or 155°C.

[0051] In this invention, the vulcanization time is preferably 30 to 40 minutes. In embodiments of this invention, the vulcanization time may specifically be 30 minutes, 32 minutes, 34 minutes, 36 minutes, 38 minutes, or 40 minutes.

[0052] In this invention, the unit surface pressure of vulcanization is preferably 2-4 MPa. In embodiments of this invention, the unit surface pressure of vulcanization can specifically be 2 MPa, 2.5 MPa, 3 MPa, 3.5 MPa, or 4 MPa. This invention controls the mass ratio of adhesive to sulfur and the vulcanization parameters within the above range. The vulcanization parameters determine the bonding strength between the cover adhesive and the aramid canvas. Excessive temperature will lead to over-vulcanization, reducing adhesion and abrasion; excessively low temperature will result in insufficient abrasion resistance.

[0053] The vulcanization system used in the preparation of the cover adhesive in this invention is a semi-effective vulcanization system, which can reduce the formation of polysulfide bonds and mainly generate monosulfide bonds and disulfide bonds. The possibility of intramolecular sulfur bonding is reduced, so the glass transition temperature rises slightly, thereby improving its cold resistance.

[0054] In this invention, the thickness of the cover rubber is preferably 2-4 mm, more preferably 3 mm. In this invention, the cover rubber serves to protect the aramid canvas and withstand wear, impact, cutting, corrosion, and use in extremely cold polar conditions caused by vehicle operation. By limiting the thickness of the cover rubber within the above-mentioned range, this invention can further improve the various properties of the rubber belt.

[0055] The low-temperature resistant all-terrain rubber belt provided by the present invention also includes edge rubber covering the side of the aramid canvas.

[0056] In this invention, the side surface preferably includes four sides.

[0057] In this invention, the composition and preparation method of the edge adhesive are preferably the same as those of the cover adhesive, and will not be described again here.

[0058] In this invention, the thickness of the edge adhesive is preferably 0.5–1.5 mm, more preferably 1 mm. By limiting the thickness of the edge adhesive within the above range, this invention can further improve the various properties of the rubber belt.

[0059] In this invention, the aramid canvas, cover adhesive, and edge adhesive are bonded together by an intermediate core adhesive.

[0060] In this invention, the intermediate core adhesive comprises the following components: petroleum resin, vulcanized rubber powder, short fibers, octyl adipate, silica, and coupling agent Si-69.

[0061] In this invention, the short fibers are preferably cotton fibers. This invention does not impose any special limitations on the length and diameter of the short fibers; commercially available short fibers well-known to those skilled in the art can be used.

[0062] In this invention, the preferred mass percentages of petroleum resin, vulcanized rubber powder, short fibers, octyl adipate, silica, and coupling agent Si-69 in the core rubber are 30-35%, 20-30%, 1-10%, 1-10%, 10-12%, and 20-22%, respectively; more preferably, they are 33.3%, 25.4%, 5.3%, 5%, 10.2%, and 20.8%. In this invention, the core rubber uses reinforcing agents (petroleum resin, vulcanized rubber powder, and short fibers) with good low-temperature performance and a cold-resistant plasticizer (octyl adipate), which significantly improves the cold resistance of the rubber compound. The silica and Si-69 in the core rubber improve wet slip resistance and vulcanization reversion, further enhancing the cold resistance of the rubber belt. By limiting the amounts of each component in the core rubber within the above-mentioned ranges, this invention can further improve the cold resistance and other properties of the rubber belt.

[0063] In this invention, the surface of the rubber strip preferably includes holes. These holes allow the rubber strip to be connected to a grounding frame using bolts and nuts to form a ring-shaped rubber strip. This invention does not impose any special limitations on the size, shape, or spacing of the holes; they can be selected according to actual needs.

[0064] This invention controls the structure of the rubber belt, the composition of the cover rubber and the core rubber, improving the cold resistance of the rubber belt and enabling its use in environments as low as -60℃. This solves the problem that existing rubber tracks cannot be used in environments as low as -60℃. At the same time, the rubber belt is thinner and lighter. While maintaining the same strength and installation dimensions, the thickness of the rubber belt is reduced compared to existing technologies, resulting in lighter weight. Furthermore, the tensile strength, elongation at break, and flexural deflection are increased, while other performance parameters remain consistent with those in normal temperature environments. This allows the vehicle to operate in environments as low as -60℃, extending its service life and improving the overall vehicle mobility. In addition, its simple structure and reasonable design can save costs and improve work efficiency.

[0065] The low-temperature resistant all-terrain rubber belt provided by this invention can be used at -60℃, and its plasticity and toughness do not change with temperature. It is suitable for travel in various harsh environments, and its mobility performance is not reduced. It meets the all-terrain design requirements without being affected by the environment.

[0066] The structural diagram of the low-temperature resistant all-terrain rubber belt provided by this invention after being connected to the grounding frame by bolts and nuts is shown below. Figure 1 As shown in the diagram. 1 represents the ground-mounted frame, 2 represents the low-temperature resistant all-terrain rubber strip, 3 represents the bolt, and 4 represents the nut.

[0067] The structural schematic diagram of the low-temperature resistant all-terrain rubber belt provided by this invention is shown below. Figure 2 As shown.

[0068] The internal structure diagram of the low-temperature resistant all-terrain rubber belt provided by this invention is shown below. Figure 3As shown in the diagram. 5 represents the top and bottom cover adhesives, 6 represents the middle core adhesive, and 7 represents aramid canvas.

[0069] This invention also provides a method for preparing the low-temperature resistant all-terrain rubber belt described in the above technical solution, comprising the following steps:

[0070] A core adhesive is coated onto the upper and lower surfaces and sides of the aramid canvas. Then, a cover adhesive is applied to the upper and lower surfaces of the aramid canvas and an edge adhesive is applied to the sides before pressing to obtain a low-temperature resistant all-terrain rubber belt.

[0071] The present invention does not impose any special limitations on the coating operation; any coating technique known to those skilled in the art can be used.

[0072] In this invention, the coating thickness of the intercore adhesive is preferably 0.5–1.5 mm, more preferably 1 mm. By limiting the coating thickness of the intercore adhesive within the above range, this invention achieves better adhesion.

[0073] In this invention, the pressing temperature is preferably 600–700°C; the pressing time is preferably 7–9 hours, more preferably 8 hours. By limiting the pressing temperature and time within the above ranges, this invention enables the layers to bond fully.

[0074] The present invention also provides the application of the low-temperature resistant all-terrain rubber belt described in the above technical solution or the low-temperature resistant all-terrain rubber belt prepared according to the preparation method described in the above technical solution in low-temperature environments.

[0075] The present invention does not impose any special limitations on the operation of the application, and any technical solution known to those skilled in the art can be used.

[0076] The technical solutions of this invention will be clearly and completely described below with reference to the embodiments thereof. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0077] Example 1

[0078] A low-temperature resistant all-terrain rubber belt is composed of aramid canvas (6mm thick), cover rubber covering the upper and lower surfaces of the aramid canvas (both the upper and lower cover rubbers are 3mm thick), and edge rubber covering the sides of the aramid canvas (four sides, each side edge rubber is 1mm thick). The aramid canvas, cover rubber, and edge rubber are bonded together by an intermediate core rubber.

[0079] The preparation method of the cover rubber is as follows: (1) Butadiene rubber, brominated epoxy resin and smoked sheet rubber are mixed to obtain masterbatch; the mass percentages of butadiene rubber, brominated epoxy resin and smoked sheet rubber are 24%, 36% and 40%, respectively.

[0080] (2) After the masterbatch obtained in step (1) is left to stand for 8 hours, it is mixed with high vinyl polybutadiene rubber, activator (lead oxide), accelerator (dithiocarbamate), antioxidant (4010), coupling agent (titanium ester coupling agent), carbon nanotubes (diameter 5-15nm, length 40-100μm), super carbon black and softener (paraffin oil) to obtain a first-stage rubber; the mass ratio of masterbatch, high vinyl polybutadiene rubber, activator, accelerator, antioxidant, coupling agent, carbon nanotubes, super carbon black and softener is 100:25:12.7:3.5:18.7:10.5:28:1.1:0.5;

[0081] (3) After the section of rubber obtained in step (2) is left to stand for 8 hours, it is mixed with sulfur and vulcanized to obtain a cover rubber. The mass ratio of the section of rubber to sulfur is 100:2.4, the vulcanization temperature is 155℃, the vulcanization time is 35min, and the unit surface pressure of vulcanization is 3MPa.

[0082] The preparation method of the edge adhesive is the same as that of the cover adhesive;

[0083] The intermediate core adhesive is composed of the following components: petroleum resin, vulcanized rubber powder, short fibers (cotton fibers), octyl adipate, silica, and coupling agent Si-69. The mass percentages of petroleum resin, vulcanized rubber powder, short fibers, octyl adipate, silica, and Si-69 are 33.3%, 25.4%, 5.3%, 5%, 10.2%, and 20.8%, respectively.

[0084] The method for preparing the low-temperature resistant all-terrain rubber belt is as follows: an intermediate core adhesive (1 mm thick) is coated on the upper and lower surfaces and sides of the aramid canvas, and then a cover adhesive is applied to the upper and lower surfaces of the aramid canvas and an edge adhesive is applied to the sides before pressing to obtain the low-temperature resistant all-terrain rubber belt. The pressing temperature is 650℃ and the pressing time is 8 hours.

[0085] Comparative Example 1

[0086] Commercially available rubber belts are 20mm thick.

[0087] The performance of the low-temperature resistant all-terrain rubber belt provided in Example 1 and the rubber belt in Comparative Example 1 were tested, and the results are shown in Table 1.

[0088] Table 1 shows the properties of the low-temperature resistant all-terrain rubber belt provided in Example 1 and the rubber belt in Comparative Example 1.

[0089]

[0090]

[0091] As can be seen from Table 1, while ensuring the strength and installation dimensions of the rubber belt remain unchanged, the low-temperature resistant all-terrain rubber belt provided in Example 1 has a thickness that is 8 mm less and a weight that is 40% lighter than the existing rubber belt. Moreover, its tensile strength, elongation at break, and bending deflection are all increased, and other performance parameters remain consistent with those of the normal temperature environment. This allows the rubber belt to be unaffected by ambient temperature and to travel in extremely cold polar conditions.

[0092] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A low-temperature resistant all-terrain rubber belt, comprising aramid canvas, cover rubber covering the upper and lower surfaces of the aramid canvas, and side rubber covering the sides of the aramid canvas, wherein the aramid canvas, cover rubber, and side rubber are bonded together by an intermediate core rubber. The cover rubber comprises the following raw materials vulcanized through a semi-effective vulcanization system: butadiene rubber, brominated epoxy resin, smoked sheet rubber, high-vinyl polybutadiene rubber, activator, accelerator, antioxidant, coupling agent, carbon nanotubes, super carbon black, softener, and sulfur; the butadiene rubber, brominated epoxy resin, and smoked sheet rubber are mixed to obtain a masterbatch; the mass percentages of butadiene rubber, brominated epoxy resin, and smoked sheet rubber in the masterbatch are 20-30%, 30-40%, and 40-50%, respectively; the mass ratio of the masterbatch, high-vinyl polybutadiene rubber, activator, accelerator, antioxidant, coupling agent, carbon nanotubes, super carbon black, and softener is 100:(20-30):(10-15):(1-5):(15-20):(10-12):(25-30):(0.5-2):(0.1-1); The intermediate core rubber comprises the following components: petroleum resin, vulcanized rubber powder, short fibers, octyl adipate, silica, and coupling agent Si-69; the mass percentages of petroleum resin, vulcanized rubber powder, short fibers, octyl adipate, silica, and coupling agent Si-69 in the intermediate core rubber are 30-35%, 20-30%, 1-10%, 1-10%, 10-12%, and 20-22%, respectively.

2. The low-temperature resistant all-terrain rubber belt according to claim 1, characterized in that, The preparation method of the cover adhesive includes the following steps: (1) The butadiene rubber, brominated epoxy resin and smoked sheet rubber are first mixed to obtain the masterbatch; (2) The masterbatch obtained in step (1) is mixed with high vinyl polybutadiene rubber, activator, accelerator, antioxidant, coupling agent, carbon nanotube, medium super carbon black and softener in a second mixing process to obtain a first-stage rubber. (3) Mix the adhesive obtained in step (2) with sulfur and vulcanize it to obtain a cover adhesive.

3. The low-temperature resistant all-terrain rubber belt according to claim 2, characterized in that, In step (3), the mass ratio of a section of adhesive to sulfur is 100:(1~3).

4. The low-temperature resistant all-terrain rubber belt according to claim 2, characterized in that, In step (3), the vulcanization temperature is 150~155℃, the vulcanization time is 30~40min, and the unit surface pressure of vulcanization is 2~4MPa.

5. The low-temperature resistant all-terrain rubber belt according to claim 1, characterized in that, The thickness of the aramid canvas is 5-7 mm, the thickness of the cover adhesive is 2-4 mm, and the thickness of the edge adhesive is 0.5-1.5 mm.

6. A method for preparing the low-temperature resistant all-terrain rubber belt according to any one of claims 1 to 5, comprising the following steps: A core adhesive is coated on the upper and lower surfaces and sides of the aramid canvas. Then, a cover adhesive is applied to the upper and lower surfaces of the aramid canvas and an edge adhesive is applied to the sides before pressing. This produces a low-temperature resistant all-terrain rubber belt.

7. The application of the low-temperature resistant all-terrain rubber belt according to any one of claims 1 to 5 or the low-temperature resistant all-terrain rubber belt prepared according to the preparation method of claim 6 in an environment of -60°C.

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