The extensive use of polyurethane wheels in automobile production lines is mainly due to the precise matching of their material properties with industrial production needs. The following is a specific analysis of the reasons:

1. Excellent wear resistance molecular structure advantage: Polyurethane is composed of isopentenyl esters and multicomponent depolymerization, with a large number of hydrogen ester groups in the molecular chain, forming a cross-linked network structure. This structure endows it with extremely high hardness and wear resistance, far exceeding slow rubber wheels (durability is 3-5 times that of elm rubber). Long term cost-effectiveness: In the scenario of high-intensity, 24-hour continuous operation of automobile production lines, polyurethane wheels can significantly reduce replacement frequency, maintenance costs, and downtime.

2. Excellent tear resistance

Impact resistance: The elasticity of polyurethane can be customized from soft to hard by adjusting the formula (such as the ratio of hard to solid segments). In the automotive production line, wheels need to withstand heavy loads (such as body transportation and parts moving far away) and complex impacts. The mechanical cracking of polyurethane can prevent wheels from cracking

Body cracking, extending service life

Fatigue resistance: When subjected to dynamic loads for a long time, polyurethane wheels are less prone to fatigue cracks, ensuring production stability.

3. Good shock absorption and noise reduction performance. Elastic recoil: The elastic modulus of polyurethane is between rubber and plastic, which can provide sufficient support and effectively absorb vibration. In the automotive production line, this helps to reduce the potential damage of equipment vibration to precision components such as engines and transmissions during low-noise operation: compared to metal or hard plastic wheels, polyurethane wheels have lower friction noise with tracks or ground, which meets the requirements of modern factories for working environments.

4. Chemical corrosion resistance, oil and solvent resistance: Chemical substances such as lubricating oil, coolant, and cleaning agents are used in the production process of automobiles. Polyurethane wheelsets have excellent resistance to most oils and solvents, and are not easily swollen, deformed, or corroded, ensuring long-term performance stability. Aging resistance: The benzene ring structure in the polyurethane molecular chain can improve the ultraviolet resistance and reduce the aging problem in outdoor or light environment.

5. Lightweight and energy-saving

Density advantage: The density of polyurethane (about 1.1-1.3 g/cm3) is lower than that of metals (such as steel, about 7.8 g/cm2), which can reduce the weight of the wheel itself and lower driving energy consumption.

Low rolling resistance: The rolling resistance of polyurethane wheels is lower than that of rubber wheels, further reducing energy consumption and in line with the trend of energy conservation and emission reduction in the automotive industry.

6. Customized design flexibility

Hardness and color adjustment: By changing the raw material ratio, the hardness of the polyurethane wheel can be freely adjusted from Shore A60 (soft) to Shore D80 (hard) to meet different working conditions (such as high hardness required for main load transportation and low hardness required for precision positioning).