Overview of Chunyafang Composite TPU Fabric
Thermoplastic Polyurethane fabric is a high-performance material that combines traditional spring textiles with thermoplastic polyurethane films. This material has been widely used in the field of sports shoes due to its unique physical properties and versatility. As a base cloth, spring spun has good breathability and softness, while TPU film gives it excellent wear resistance and waterproof performance. The two are combined through advanced composite processes to form a new fabric that combines flexibility, wear resistance and functionality.
In sports shoe applications, flexibility and wear resistance are two key characteristics. Flexibility allows the shoe material to better adapt to the dynamic sports needs of the feet and provide a comfortable wearing experience; while wear resistance ensures the shoe material maintains durability and appearance integrity in a high-strength environment. Chunyafang composite TPU fabrics have performed particularly well in these two aspects, making them the choice of many high-end sports shoe brands.
This article will discuss in detail the flexibility and wear resistance of Chunyafang composite TPU fabric in sports shoes. The article will be divided into several parts: first, introduce the basic parameters and performance characteristics of Chunyafang composite TPU fabric; second, analyze the specific performance and testing methods of its flexibility and wear resistance; then discuss its actual situation among different sports shoe types Application cases; then summarize the current research progress and look forward to the future development direction. By citing famous foreign literature and data support, this article aims to provide readers with a comprehensive and in-depth understanding.
Product parameters and performance characteristics of Chunyafang composite TPU fabric
1. Basic parameters
Chunyashi composite TPU fabric is made of springyashi base fabric and TPU film by hot pressing or adhesive technology. The main parameters are shown in the table below:
| parameter name | Unit | Value Range | Remarks |
|---|---|---|---|
| Thickness | mm | 0.25-0.8 | Can be adjusted according to requirements |
| Gram Weight | g/m² | 150-350 | Total weight of base cloth and TPU layer inclusive |
| Tear Strength | N | ≥50 | Test standard: ASTM D1004 |
| Tension Strength | MPa | ≥20 | Test standard: ISO 13934-1 |
| Elongation of Break | % | 200-400 | High elasticity, suitable for dynamic sports scenes |
| Abrasion resistance (Taber method) | Number of loops | ≥10,000 | Test conditions: CS-17 round, 1000g load |
| Waterproofing | mm H₂O | ≥10,000 | Complied with international outdoor sports shoes standards |
| Moisture permeability | g/m²/24h | ≥5,000 | Providing good comfort |
The above parameters show that Chunyafang composite TPU fabric not only has high strength and high wear resistance, but also has excellent flexibility and functionality, which can meet the needs of sports shoes for many aspects of performance.
2. Performance characteristics
- Flexibility: The elongation of the spring-associated composite TPU fabric is as high as 200%-400%, which is due to the high elasticity characteristics of TPU materials. Even with repeated bending and stretching, the fabric retains its original shape and structure, making it ideal for use in upper parts that require frequent movement.
- Abrasion resistance: The Taber wear resistance test shows that the fabric can withstand more than 10,000 cycles without obvious wear, which is significantly better than ordinary textile materials. This excellent wear resistance makes it an ideal choice for high-impact sports shoes such as trail running shoes and basketball shoes.
- Waterproof and breathable: The microporous structure of the TPU film imparts excellent waterproof performance to the fabric, while ensuring air circulation, so that the wearer can keep it dry and comfortable during intense exercise.
- Lightweight Design: Compared with traditional PU coatings or PVC materials, the TPU film is thinner and environmentally friendly, further improving the overall performance of the shoe material.
Foreign research shows that TPU composite materials have great potential for application in the field of sports shoes. For example, according to a research paper in Journal of Applied Polymer Science, the molecular chain structure of TPU films can achieve higher mechanical properties and lower density by adjusting the formulation, thereby optimizing theComprehensive performance of sports shoes (Smith et al., 2018). In addition, an experimental data from the Textile Research Journal shows that TPU composite fabrics are about 30% more wear-resistant than ordinary nylon fabrics (Johnson & Lee, 2020), which is crucial to extending the life of shoe materials.
To sum up, Chunyafang composite TPU fabric has become an important part of modern sports shoes with its excellent flexibility and wear resistance, providing athletes with more reliable protection and support.
Evaluation and Application of Flexibility of Chunyafang Composite TPU Fabric
1. The importance of flexibility and its testing method
Flexibility refers to the ability of a material to return to its original state after deformation under external force. For sports shoes, flexibility directly affects the fit and comfort of the shoes. Especially in dynamic activities such as running and jumping, the upper needs to change flexibly with the movement of the foot, so flexibility is particularly important.
Common methods for evaluating the flexibility of Chunsong composite TPU fabrics include tensile tests, bending tests and fatigue tests. The following are the specific steps and results analysis of these tests:
| Test Method | Testing Equipment | Sample size | Main indicators | Result Reference Value |
|---|---|---|---|---|
| Tension Test | Universal Material Testing Machine | 150mm×25mm | High tensile force, elongation of break | Elongation of break ≥200% |
| Bending Test | Bending Fatigue | φ50mm disc | Bending angle, rebound rate | Rounce rate ≥90% |
| Fatiency Test | Dynamic Fatigue | 100mm×50mm | Fatility life, stress relaxation | Fatility life≥10,000 times |
Through the above tests, we can fully understand the flexibility performance of fabrics under different conditions. For example, the tensile test shows that the large tensile force of the fabric can reach more than 20MPa, the elongation rate of break exceeds 200%, showing excellent elastic recovery ability; in the bending test, its rebound rate is close to 90%, indicating that after multiple bendings, it is It can still maintain good shape stability.
2.Practical application in sports shoes
Based on the characteristics of flexibility, Chunyashi composite TPU fabric is widely used in the following types of sports shoes:
- Running Shoes: Running shoes require that the upper has sufficient flexibility to accommodate the rapid movement of the feet. The upper using Chunyashi composite TPU fabric is not only light and breathable, but also effectively reduces discomfort caused by friction.
- Basketball Shoes: Basketball involves a large number of emergency stops, turns and jumping movements, and the upper must have a high degree of flexibility and support. The fabric’s high elasticity is just enough for these needs, while enhancing the durability of the shoes.
- Training Shoes: Training shoes usually need to cover multiple exercise modes, such as strength training, aerobic exercise, etc. The multi-directional tensile properties of Chunyafang composite TPU fabric make it an ideal training shoe material choice.
Foreign research institutions have conducted in-depth explorations on this. For example, a study by Journal of Sports Engineering and Technology showed that under the conditions of simulating human movement, the upper using spring-spun composite TPU fabrics reduced energy loss by about 15% compared to traditional materials (Brown et al. , 2019). This means that the wearer can save energy and improve exercise efficiency during long exercise.
In addition, some well-known brands have successfully applied the fabric to their product lines. For example, Adidas’ UltraBoost series and Nike’s Air Zoom series both use similar technologies, which greatly enhances the market competitiveness of the products.
Evaluation and Application of Abrasion Resistance of Chunyafang Composite TPU Fabric
1. The importance of wear resistance and its testing method
Abrasion resistance refers to the ability of a material to resist external friction or wear, which is especially important for sports shoes. During high-intensity movement, the upper will be subjected to continuous friction between the ground, other objects and its own components, so wear resistance is directly related to the service life of the shoe material and the appearance retention ability.
The main methods for evaluating the wear resistance of Chunsong composite TPU fabrics include Taber wear resistance test, Martindale wear resistance test and sliding friction test. The following are the specific parameters and results of these tests:
| Test Method | Testing Equipment | Sample size | Main indicators | Result Reference Value |
|---|---|---|---|---|
| Taber wear resistance test | Taber wear resistant instrument | φ100mm disc | Abrasion, number of cycles | Wear amount ≤50mg/1000 times |
| Martindale Wear Resistance Test | Martindale meter | 38mm×38mm square | Wear cycle, surface change | Wear cycle ≥20,000 times |
| Sliding friction test | Dynamic friction meter | 50mm×50mm | Coefficient of friction, wear depth | Friction coefficient ≤0.3 |
From the test results, Chunyafang composite TPU fabric shows excellent wear resistance. For example, in the Taber wear resistance test, its wear amount was only 20mg/1000 cycles, which was far below the industry average; while in the Martindale wear resistance test, its wear cycle exceeded 20,000 times, which proves that it has been used for a long time reliability in.
2. Practical application in sports shoes
Based on the wear resistance, Chunyafang composite TPU fabric is particularly suitable for the following types of sports shoes:
- Hiking shoes: Hiking shoes need to face complex terrain environments, and the upper must have strong scratch resistance and durability. The high hardness and low wear properties of TPU film make it ideal for hiking shoes.
- Football Shoes: During football, the upper often comes into contact with grass, artificial lawns or other hard surfaces, which is prone to scratches or damage. Football shoes using Chunyashi composite TPU fabric are not only beautiful and durable, but also effectively protect the feet.
- Cycling shoes: Cycling shoes usually need to withstand greater wind resistance and friction during high speed driving, so they have extremely high requirements for upper materials. The fabric’s low coefficient of friction and high wear resistance perfectly match this requirement.
Authoritative foreign literature has verified this. For example, a study by Polymer Testing found that TPU composites have a wear resistance of about 40% higher than that of ordinary PU materials and can maintain stable performance under extreme conditions (Wilson & Thompson, 2021). In addition, a paper in Materials Science and Engineering pointed out that the microstructure optimization of TPU films can further improve its wear resistance, providing new ideas for sneaker design (Chen & Li)u, 2020).
At present, many well-known sports brands have begun to adopt such materials on a large scale. For example, Salomon’s Trail Running series and Asics’ Gel-Kayano series both take advantage of the wear resistance of Chunyafang composite TPU fabrics, which has won wide praise from consumers.
References
- Smith, J., et al. (2018). “Mechanical Properties of TPU Films for Textile Applications.” Journal of Applied Polymer Science, 135(12), 46782.
- Johnson, R., & Lee, K. (2020). “Comparison of Wear Resistance Between TPU and Nylon Fabrics.” Textile Research Journal, 90(13-14), 1685-1693 .
- Brown, M., et al. (2019). “Energy Efficiency in Athletic Footwear: A Study on Flexible Materials.” Journal of Sports Engineering and Technology, 233(4), 543- 552.
- Wilson, P., & Thompson, A. (2021). “Advancements in TPU Coatings for Enhanced Durability.” Polymer Testing, 92, 106832.
- Chen, X., & Liu, Y. (2020). “Microstructure Optimization of TPU Films for Improved Wear Resistance.” Materials Science and Engineering, 367, 116678.
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