In the era of automotive lightweighting, materials design has become a key research topic in the industry. In addition to the extensive use of plastics such as PP, PVC, PU, and PA, reinforcing materials like carbon fiber and glass fiber have also emerged as hotspots of market interest. With advances in thermoplastic elastomer technology, their applications in the automotive sector are becoming increasingly widespread. Currently, the thermoplastic elastomers commonly used in automobiles include polyolefin-based types (TPO, TPV), polyester-based types (TPEE), polyurethane-based types (TPU), and styrene-based types (TPS).

TPU Downstream Market Distribution Map for Europe

TPU exhibits excellent wear resistance, flexural fatigue resistance, and high elasticity, making it suitable for a wide range of automotive components. These include shift lever handles, bushings and washers for various couplings, connectors for wire harnesses, spiral retractable cables, cable sheaths, toothed belts, protective sleeves and gaskets for steering tie rods, suspension joint hinges, hydraulic and pneumatic components, suspension diaphragms, shock-absorbing diaphragms, shock absorbers, spring limiters, and more. Additionally, TPU can be compounded with other plastics or rubbers for use in parts such as automotive bumpers, airbags, and dust covers.

Globally, TPU products emerged earlier in Europe and North America, where the technology is more mature and their use is more widespread in high-end applications; currently, automotive applications account for over 15% of total consumption. By contrast, in the Asia-Pacific region, TPU remains predominantly used in low-end footwear materials, with automotive applications still below 10%. In China, although the share of TPU in footwear has declined somewhat, its growth in the automotive sector remains under 5%, and this segment is largely served by imported or foreign‑owned products, leaving considerable room for further development.

TPU can be applied in the automotive sector in the following ways:

(1)TPU/PP plastic alloy

This material boasts advantages such as light weight, excellent cost-effectiveness, and recyclability, and is expected to find wide application in automotive interior and exterior trim components, including bumpers and their brackets, various vehicle-mounted brackets, and structural frames.

(2)TPU/PC plastic alloy

Blending TPU with PC can improve PC’s toughness, resistance to stress cracking, fracture sensitivity, and resistance to solvents and chemicals, while also lowering its molding processing temperature, thereby expanding its range of applications in the automotive industry.

(3) TPU/PVC plastic alloy

TPU/PVC alloys can significantly improve the elongation at break of PVC and greatly enhance its environmental friendliness, reducing the environmental and health hazards posed by plasticizers in PVC and thereby expanding the range of applications for PVC.

(4)TPU/PA6 plastic alloy

Blending TPU with PA6 not only retains TPU’s high elasticity, high strength, and wear resistance but also enhances its temperature resistance. With outstanding overall performance, this material is a new type of high‑performance composite that holds significant application potential in the automotive industry.

(5) TPU long-fiber composites

Long-fiber-reinforced thermoplastic composites (LFT) exhibit excellent properties such as high strength, high stiffness, superior dimensional stability, low warpage, long service life, and creep resistance, and have been widely adopted in the automotive industry. Among these, TPU (alloy)/LFT composites are extensively used in automotive components including instrument panels, bumpers, floor mats, front-end and door assemblies, and underbody protection parts.

In summary, TPU has a wide range of applications in the automotive sector, with notable performance advantages that make it a key enabler of vehicle lightweighting. Domestically, the TPU industry is growing rapidly, with new products continuously being introduced and high-end applications steadily expanding. It is expected that TPU’s use in the automotive field will increase significantly.