Formula of nano-cellulose light high-performance electric vehicle tire

Abstract

The invention discloses a nano-cellulose light high-performance electric vehicle tire formula which comprises the following components in parts by weight: 40-60 parts of natural rubber, 20-30 parts of butadiene styrene rubber, 20-30 parts of butadiene rubber, 1-6 parts of zinc oxide, 1-4 parts of stearic acid, 5-7 parts of an anti-aging agent, 1-3 parts of protective wax, 0.5-15 parts of nano-cellulose, 60-80 parts of carbon black, 10-15 parts of engine oil, 1-2.5 parts of sulfur, 1-2 parts of an accelerant CZ / NS and 0.1-0.5 part of a scorch retarder. The nano cellulose is added into the formula of the electric vehicle tire, so that the wear resistance, fatigue resistance and tear resistance of the rubber material can be effectively improved, and the compression heat generation property is reduced, thereby reducing the rolling resistance of the tire.

Description

Technical Field

[0001] The invention relates to a nano-cellulose lightweight and high-performance electric vehicle tire formula, belonging to the technical field of tire manufacturing. Background Art

[0002] As the demand for electric vehicles to be lightweight and have a longer range becomes prominent, their matching tires also need to be upgraded synchronously. The lightweighting of electric vehicle tires can be solved by reducing the weight of the tires and the rolling resistance of the wheels. However, the "magic triangle" of rolling resistance, anti-skid performance, and wear resistance involved in the use of rubber tires makes materials the biggest limitation to lightweighting. With the rapid development of the global tire industry, the focus is on high performance, functionality, and differentiation of products, especially under the general trend of green environmental protection. The rubber and traditional additives used in tire manufacturing are gradually being replaced by some new eco-friendly materials. The use of a variety of bio-based matrix rubbers, bio-based reinforcement materials, bio-based additives and other materials makes the tires have good load-bearing performance and cushioning performance, as well as high wear resistance, anti-skid performance and low rolling resistance. It has become a hot spot and focus of research and application.

[0003] Cellulose is the most abundant renewable material on earth. According to the American "Rubber World", nanocellulose prepared from natural cellulose has a low density (1.3-1.6 g / cm 3 ), high modulus (100-200 GPa), high strength (2-6GPa), and low thermal expansion coefficient make it an ideal tire reinforcement material, partially replacing the carbon black reinforcement in tire rubber. The application of nanocellulose in the tread formulation design of electric vehicle tires has lower production costs, less energy requirements, and lower heat generation performance. Its traction on icy and slippery roads is comparable to that of traditional tires, and its rolling resistance in hot summer is lower than that of traditional tires, making it more energy-efficient. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a nanocellulose lightweight and high-performance electric vehicle tire formula.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] The electric vehicle tire formula provided by the present invention comprises the following components in parts by weight:

[0007] Natural rubber: 40-60, styrene-butadiene rubber: 20-30, butadiene rubber: 20-30, zinc oxide: 1-6, stearic acid: 1-4, antioxidant: 5-7, protective wax: 1-3, nanocellulose: 0.5-15, carbon black: 60-80, engine oil: 10-15, sulfur: 1-2.5, accelerator CZ / NS: 1-2, anti-scorch agent: 0.1-0.5.

[0008] As the innovation point of the present invention, on the basis of the prior art, nanocellulose is added into the formula to make it have high wear resistance, high tear resistance and low compression heat generation.

[0009] The nanocellulose described in the present invention is selected from one or more of cellulose and its derivatives and hybrids.

[0010] Preferably, the nanocellulose described in the present invention is lignocellulose.

[0011] The nanocellulose described in the present invention refers to fibers having a minor axis diameter in the nanometer range.

[0012] Specifically, the minor axis diameter of the nanocellulose described in the present invention can be 10nm to 400nm, 10nm to 350nm, 10nm to 300nm, 20nm to 300nm, 20nm to 250nm, 30nm to 250nm, 30nm to 200nm, 40nm to 200nm, 40nm to 150nm, 50nm to 150nm, or 50nm to 100nm.

[0013] Preferably, the minor axis diameter of the nanocellulose described in the present invention is 10 nm to 400 nm.

[0014] With respect to the electric vehicle tire formula of the present invention, the rubber compound mixing process of the present invention can be operated according to the prior art without other special steps.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The electric vehicle tire rubber material of the present invention adopts nanocellulose to effectively improve the wear resistance, fatigue resistance, tear resistance, and low compression heat generation of the rubber material, and reduce the rolling resistance of the tire. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict, and the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0018] Example 1

[0019] The electric vehicle tire formula provided in this embodiment includes the following components in parts by weight:

[0020] Natural rubber: 50, styrene-butadiene rubber: 20, butadiene rubber: 30, zinc oxide: 5, stearic acid: 3, antioxidant 4020: 3, antioxidant RD: 2, protective wax: 2, nanocellulose: 5, carbon black: 70, engine oil: 12, sulfur: 1.5, accelerator CZ: 1.4, anti-scorch agent: 0.1.

[0021] Example 2

[0022] The electric vehicle tire formula provided in this embodiment includes the following components in parts by weight:

[0023] Natural rubber: 40, styrene-butadiene rubber: 30, butadiene rubber: 30, zinc oxide: 5, stearic acid: 3, antioxidant 4020: 3.5, antioxidant 4010NA: 1.5, protective wax: 2.5, nanocellulose: 1.5, carbon black: 75, engine oil: 13, sulfur: 1.5, accelerator CZ: 1.4, anti-scorch agent: 0.1.

[0024] Example 3

[0025] The electric vehicle tire formula provided in this embodiment includes the following components in parts by weight:

[0026] Natural rubber: 60, styrene-butadiene rubber: 20, butadiene rubber: 20, zinc oxide: 5, stearic acid: 3, antioxidant 4020: 3.5, antioxidant RD: 2.5, protective wax: 3, nanocellulose: 10, carbon black: 65, engine oil: 13, sulfur: 1.5, accelerator CZ: 1.5, anti-scorch agent: 0.2.

[0027] Analysis of physical and chemical data of the tires of the above embodiments.

[0028] Main experimental equipment: MZ-4000D (Jiangsu Mingzhu Tensile Machine), GT-7080S2 (Dongguan High-speed Railway Instrument Company), GT-M2000A (Dongguan High-speed Railway Instrument Company), DMAQ800 (TA Company, USA).

[0029] Comparison of vulcanization characteristics:

[0030] project Example 1 Example 2 Example 3 Test temperature (℃) 165 165 165 ML / (dN.M) 2.68 2.31 2.55 MH / (dN.M) 12.35 10.89 12.74 tS2 / min 1.67 1.82 1.78 tS90 / min 3.33 3.28 3.57 Mooney viscosity (ML1+4, 100) 65.88 67.32 66.15

[0031] Shore hardness (°A) 64 65 62 300% elongation (Mpa) 10.1 10.3 11.8 Tensile strength (Mpa) 19.7 18.9 20.3 Elongation at break (%) 545 531 583 Tear strength (KN / m) 95.0 85.7 108.1 <![CDATA[Akkron abrasion (cm 3 / 1.61 Km)]]> 0.17 0.20 0.15 60℃ tagδ 0.197 0.200 0.193

[0032] The embodiments of the present invention disclosed above are only used to help illustrate the present invention. The embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well.

Claims

1. A nanocellulose lightweight high-performance electric vehicle tire formula, characterized in that: The composition comprises the following components in parts by weight: Natural rubber: 40-60, styrene-butadiene rubber: 20-30, butadiene rubber: 20-30, zinc oxide: 1-6, stearic acid: 1-4, antioxidant: 5-7, protective wax: 1-3, nanocellulose: 0.5-15, carbon black: 60-80, engine oil: 10-15, sulfur: 1-2.5, accelerator CZ / NS: 1-2, anti-scorch agent: 0.1-0.

5.

2. The nanocellulose lightweight high-performance electric vehicle tire formula according to claim 1, characterized in that: The invention comprises 0.5-15 parts by weight of nanocellulose.

3. The nanocellulose lightweight high-performance electric vehicle tire formula according to claim 1, characterized in that: The nanocellulose is selected from one or more of cellulose and its derivatives and hybrids.

4. The nanocellulose according to claim 3, characterized in that The nano cellulose is wood cellulose.

5. The nanocellulose lightweight high-performance electric vehicle tire formula according to claim 1, characterized in that: The minor axis diameter of the nanocellulose is 10nm to 400nm, 10nm to 350nm, 10nm to 300nm, 20nm to 300nm, 20nm to 250nm, 30nm to 250nm, 30nm to 200nm, 40nm to 200nm, 40nm to 150nm, 50nm to 150nm, or 50nm to 100nm.

6. The nanocellulose according to claim 5, characterized in that The minor axis diameter of the nanocellulose is 10nm to 400nm.