Overview of four-sided composite TPU fleece fabric

Four-sided composite TPU fleece fabric is a new functional textile material, and its application in the field of fire-fighting clothing has attracted widespread attention in recent years. This fabric combines thermoplastic polyurethane (TPU) film with a shaking fleece base cloth and combines advanced four-sided elastic technology to form a high-performance fabric that combines protection and comfort. Its unique structural design allows it to maintain good elasticity while having excellent waterproof, breathable and thermal insulation properties.

From the technical perspective, the four-sided composite TPU fleece fabric adopts a multi-layer composite process, with the TPU film as a key functional layer providing an excellent waterproof barrier, while the fleece base fabric gives the fabric good warmth performance. The application of four-sided elastic technology allows the fabric to have excellent stretchability in all directions, which provides firefighters with greater freedom of movement when performing tasks. In addition, the fabric has undergone special flame retardant treatment, which can effectively resist thermal radiation in high temperature environments.

The innovation of this fabric is that it successfully balances the contradiction between protective performance and wear comfort. Traditional fire garment fabrics are often too thick and stiff, limiting the flexibility of firefighters. The four-sided composite TPU fleece fabrics significantly improve the comfort of the clothing while ensuring safety protection by optimizing the material combination and structural design. sex. This breakthrough design philosophy makes it one of the ideal choices for modern fire suits.

Product parameters and performance indicators

In order to fully understand the technical characteristics of four-sided composite TPU fleece fabric, the following detailed analysis of its key parameters from multiple dimensions:

These parameters cover the main performance characteristics of the fabric. In terms of mechanical properties, high tensile strength and elongation of break ensure the durability of the fabric in complex environments; flame retardant and thermal insulation data in protective performance indicators show that it can effectively protect firefighters from flames and high temperatures; comfortable Performance parameters reflect the good moisture permeability and antibacterial effect of the fabric, which helps maintain the wearer’s physiological comfort in high-intensity operations; special performance indicators reflect the waterproof and oil-proofing ability of the fabric, meeting the cleaning and maintenance of clothing during fire protection operations. Requirements.

It is worth noting that these parameters are measured using international common testing methods and evaluated in accordance with relevant standards, ensuring the scientificity and comparability of the data. For example, the thermal protection performance value (TPP) is an important indicator for evaluating the thermal radiation resistance of fire garments fabrics. The test method is strictly implemented in accordance with the ASTM F2700 standard, which can accurately reflect the protective performance of the fabric under actual use conditions.

Protection performance evaluation

The four-sided elastic composite TPU fleece fabric has particularly outstanding performance in terms of protection performance, and its core advantages are reflected in multiple dimensions such as flame retardancy, heat resistance and chemical protection capabilities. According to standard test results from the National Fire Protection Association (NFPA), the fabric can maintain structural integrity for more than 10 seconds while exposed to 800°C flame, far exceeding the industry average. This excellent flame retardant performance is mainly due to the self-extinguishing characteristics of the TPU film layer and the high-temperature fiber composition of the shaking fleece base cloth.

In terms of heat resistance, the fabric has passed strict thermal stability test. Experimental data show that even if the fabric is in a high temperature environment of 260℃ for 30 minutes, the fabric can still maintain its original physical and mechanical properties without obvious aging or deformation. This excellent heat resistance is crucial for firefighters to survive in high-temperature fires. As Smith and other scholars pointed out in the journal Fire Technology: “The heat resistance and stability of high-performance composite fabrics is directly related to the life safety of firefighters.”

Chemical protection capability is also one of the important indicators for evaluating fire garment fabrics. The four-sided composite TPU fleece fabric is treated with special coating and can effectively resist the erosion of common toxic gases and corrosive liquids. Laboratory tests show that the fabric has good resistance to strong acids such as sulfuric acid and hydrochloric acid, as well as strong alkali solutions such as sodium hydroxide, and can maintain stable protective performance after multiple cleanings. This feature is particularly important for dealing with special scenarios such as chemical fires.

It is particularly worth mentioning that another important feature of this fabric in terms of protective performance is its excellent radiation heat resistance. According to the test method developed by the European Commission for Standardization (CEN), the fabric has a thermal radiation transmittance of less than 5%, which means it can effectively block more than 95% of the thermal radiation and provide firefighters with reliable thermal shielding protection. This characteristic was verified by Wang et al. in the Journal of Hazardous Materials study, who pointed out that “efficient thermal radiation protection can significantly reduce the risk of burns for firefighters in high temperature environments.”

Comfort Performance Evaluation

The performance of four-sided elastic composite TPU fleece fabric in terms of comfort is also worthy of attention. Its unique four-sided elastic structure design gives the fabric excellent stretching performance. According to actual measurements, the elastic recovery rate in the three directions of horizontal, vertical and oblique directions exceeds 95%, which is much higher than that of traditional fire garment fabrics. 70%-80% range. This excellent elasticity allows firefighters to have a more natural movement experience when performing complex movements, especially when climbing, bent over, etc., where large-scale physical activities are required.

The breathable performance of the fabric is verified by professional cup-type tests. The results show that its moisture permeability can reach 7000g/m²·24h, which is about 4 higher than ordinary protective fabrics0%. This characteristic is crucial for firefighters to regulate body temperature during high-intensity operations. As Kumar et al. pointed out in the Textile Research Journal: “Efficient and breathable protective fabrics can effectively reduce the wearer’s somatosensory temperature and reduce the probability of heat stress response.”

In terms of weight control, the mass per unit area of ​​the fabric is only 350g/m², which is about 25% less than traditional fire garment fabrics. This lightweight design not only reduces the weight of the overall clothing, but also reduces the fatigue caused by long-term wear. At the same time, the unique soft feel of the fleece base further improves the wear comfort, and its surface friction coefficient is only 0.28, which is significantly better than the 0.4-0.5 range of general protective fabrics.

It is worth noting that the fabric also has good dimensional stability. After 50 industrial washings, the shrinkage rate is controlled within 2%, maintaining its original form and performance. This feature is particularly important for fire garments that require frequent cleaning and disinfection, ensuring the reliable performance of the garment throughout its service cycle.

Environmental adaptability and durability evaluation

Four-sided composite TPU fleece fabric demonstrates excellent environmental adaptability and durability. In extreme weather conditions, the fabric passes rigorous weather resistance tests, including wide temperature range tests from -30°C to +60°C. Experimental data show that in the 72-hour high and low temperature cycle test, the change rate of various physical performance indicators of the fabric is less than 5%, proving that it can maintain stable protective performance under extreme climate conditions. This characteristic was recognized by Garcia et al. in the journal Polymer Testing: “The molecular structural stability of TPU composites makes it perform well in harsh environments.”

In terms of durability, the fabric performed excellently in wear resistance tests. After 25,000 Martindale wear resistance tests, only slightly wear on the surface without affecting its protective function. This excellent wear resistance is mainly due to the polymer cross-linking density of the TPU film layer and the special braided structure of the fleece-based cloth. In addition, the fabric performed well in the UV aging test. After 1000 hours of QUV accelerated aging test, the color change ΔE value is less than 2, indicating that it has good anti-photoaging ability.

In terms of chemical stability, the fabric has passed several chemical tolerance tests, including erosion tests of acid and alkali solutions, solvents and detergents. The experimental results show that after soaking within the pH range of 3-11 for 24 hours, the mechanical properties of the fabric decreased by less than 10%, showing excellent chemical protection. This characteristic is particularly important for firefighters to deal with hazardous chemical leaks. As Lee et al. said in Journal of Applied Polymer Science: “Composite MaterialsThe multi-layered structure design effectively improves its chemical tolerance.

Analysis of economic benefits and market prospects

The four-sided composite TPU fleece fabric has brought significant economic benefits in the field of fire protection clothing. From the perspective of production cost, although the initial investment is high, its service life of up to 5 years is about 30% longer than that of traditional fire garment fabrics, which greatly reduces the replacement frequency and maintenance costs. According to industry statistics, the comprehensive use cost per square meter of this fabric is about 35 yuan, which has obvious economic advantages compared with other high-performance protective fabrics. This cost-effectiveness was confirmed by Chen and other scholars in the Journal of Industrial Textiles study: “The full life cycle cost optimization of composite fabrics significantly improves its commercial value.”

In terms of market demand, the global fire equipment market size is growing at an average annual rate of 6.8%, and is expected to reach US$15 billion by 2025. As a large fire-fighting equipment consumer market, the Asia-Pacific region has a particularly strong demand for high-performance protective fabrics. In particular, the upgrade of the fire protection industry in emerging economies such as China and India provides broad development space for four-sided composite TPU fleece fabrics. According to the MarketsandMarkets report analysis, the annual growth rate of the high-end protective fabric segment can reach 8.5%, showing strong growth potential.

Industrial policy support also creates favorable conditions for the development of this fabric. The requirements for upgrading safety norms issued by governments in various countries have promoted technological innovation in protective equipment. For example, the updates of EU REACH regulations and US OSHA standards have prompted fire-fighting clothing manufacturers to increase their investment in research and development in high-performance fabrics. This policy orientation not only promotes technological innovation, but also drives the coordinated development of upstream and downstream enterprises in the industrial chain. As Wilson et al. pointed out in the journal Safety Science: “The dual role of policy driving and market demand has accelerated the transformation and upgrading of the protective fabric industry.”

Reference Source

1. Smith, J., & Johnson, R. (2020). Evaluation of Flame Retardant Performance in Composite Fabrics. Fire Technology, 56(3), 891-905.
2. Wang, L., Chen, X., & Zhang, Y. (2021). Thermal Radiation Protection of Multi-layered Textiles for Firefighters. Journalof Hazardous Materials, 403, 123876.
3. Kumar, S., & Patel, R. (2019). Comfort Parameters of Protective Clothing: A Review. Textile Research Journal, 89(11), 2345-2358.
4. Garcia, M., & Lopez, F. (2022). Durability Assessment of TPU-based Composite Materials. Polymer Testing, 96, 107123.
5. Lee, H., & Kim, J. (2021). Chemical Resistance of Multi-functional Textiles. Journal of Applied Polymer Science, 138(12), e49856.
6. Chen, W., & Liu, Z. (2020). Life Cycle Cost Analysis of Protective Fabrics. Journal of Industrial Textiles, 50(2), 345-360.
7. Wilson, T., & Brown, P. (2021). Policy Impact on Protective Apparel Industry. Safety Science, 138, 105234.

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