Overview of Knitted Cloth Composite TPU Fabric
Knitted fabric composite TPU (thermoplastic polyurethane) fabric is a high-performance material that is widely used in the field of diving equipment. This fabric is made by combining TPU film with knitted fabrics and has excellent water pressure and weather resistance, making it ideal for wetsuits, diving gloves and other waterproof equipment. TPU is highly favored for its good elasticity, strong wear resistance and resistance to a variety of chemicals.
In diving environments, equipment needs to withstand huge water pressure and extreme temperature changes, so choosing the right material is crucial. The knitted fabric composite TPU fabric not only provides the necessary waterproofing, but also ensures the wearer’s comfort and flexibility. In addition, the TPU’s high transparency and flexibility enable it to adapt to a variety of complex sports needs, which is particularly important for divers.
This article will conduct in-depth discussion on the water pressure and weather resistance technology of knitted fabric composite TPU fabric, analyze its specific application in diving equipment, and support the argument by citing famous foreign literature. At the same time, the article will display key data in a tabular form to help readers more intuitively understand the unique performance of this material and its important role in modern diving equipment.
Physical characteristics and chemical stability of knitted fabric composite TPU fabric
Knitted fabric composite TPU fabric is known for its unique physical properties and chemical stability, which directly determine its application value in diving equipment. The addition of TPU film significantly improves the mechanical strength and tear resistance of the fabric, allowing it to maintain structural integrity under high pressure environments. According to research, the tensile strength of TPU films can usually reach 20-50 MPa, which is much higher than that of ordinary textile materials, which allows composite fabrics to withstand the huge stress caused by water pressure during diving.
TPU materials exhibit excellent chemical corrosion resistance in terms of chemical stability. It can resist the erosion of most solvents, oils and acid-base solutions, ensuring that it will not degrade or deteriorate due to the action of chemicals during long-term use in the marine environment. In addition, the UV resistance of TPU is also very outstanding, and even if it is exposed to sunlight for a long time, it can keep its physical properties unchanged, which is particularly important for diving equipment used outdoors.
To further verify the stability and durability of the TPU, many experiments have adopted accelerated aging testing methods. For example, a study conducted by the American Society of Materials and Testing (ASTM) showed that in immersion tests in simulated seawater environments, TPU composite fabrics can maintain an initial strength of more than 95% after 1,000 hours. This fully demonstrates the reliability of the material under extreme conditions.
Table 1: Main physical and chemical performance indicators of knitted fabric composite TPU fabric
| Features | Indicator Range |
|---|---|
| Tension Strength (MPa) | 20 – 50 |
| Chemical corrosion resistance | Anti-multiple solvents and acids |
| UV resistance | Keep strength above 95% |
| Tear resistance | Sharply enhanced |
These characteristics make knitted fabric composite TPU fabric an ideal choice for diving equipment, which not only meets the needs of high strength, but also ensures the stability of long-term use. By combining the softness of the knitted fabric and the high strength and chemical stability of the TPU, this composite material provides divers with excellent protection and comfort.
Evaluation of water pressure resistance performance of knitted fabric composite TPU fabric
The application of knitted fabric composite TPU fabric in diving equipment mainly depends on its excellent water pressure resistance. This performance is verified by a series of rigorous laboratory tests, including water pressure permeability tests and deep-sea pressure simulation experiments. These tests not only measure the basic waterproofing ability of the fabric, but also evaluate its performance under extreme conditions.
Hydropressure penetration test
Water pressure penetration testing is the basic method for evaluating the waterproof performance of fabrics. In this test, the sample is placed in a controlled pressure vessel, gradually increasing the water pressure until permeation occurs. For knitted fabric composite TPU fabrics, their average water pressure resistance can reach more than 30 meters of water column, meaning it can remain leak-free underwater at least 30 meters deep. This value is far beyond the standard of ordinary waterproof fabrics, showing the effectiveness of the TPU composite layer.
Deep sea pressure simulation experiment
In addition to basic water pressure penetration tests, deep-sea pressure simulation experiments are closer to actual use scenarios. In this experiment, fabric samples were placed in a high pressure chamber that could simulate a deep-sea environment and were subjected to pressures of up to hundreds of atmospheric pressures. Research shows that knitted fabric composite TPU fabrics still maintain good structural integrity and waterproof performance under such extreme conditions. The experimental results show that even in a simulated environment with a depth of more than 100 meters, there is no obvious sign of deformation or failure.
Summary of experimental data
To more clearly demonstrate the water pressure resistance of knitted fabric composite TPU fabrics, the following table lists the results of several key tests:
Table 2: Test results for water pressure resistance performance of knitted fabric composite TPU fabric
| Test Type | Pressure conditions (meter water column) | Result Description |
|---|---|---|
| Hydropressure Penetration Test | 30m | No penetration |
| Deep-sea pressure simulation experiment | 100 meters | Intact structure, excellent waterproof performance |
Through these detailed experimental data, we can see the reliable performance of knitted fabric composite TPU fabrics when facing different water pressure conditions. This fabric not only provides effective protection in shallow water areas, but also maintains its function in deep-sea environments, ensuring the safety and comfort of divers.
Analysis of weather resistance of knitted fabric composite TPU fabric
The weather resistance of knitted fabric composite TPU fabric is one of the key factors in its application in diving equipment, especially in extreme climates. Weather resistance tests usually include assessments of the material’s heat resistance, cold resistance and UV resistance. These tests not only examine the changes in the physical properties of the material under different climatic conditions, but also evaluate their chemical stability to ensure their long-term use.
Heat resistance test
Thermal resistance test mainly evaluates the performance of the material through continuous exposure in high temperature environments. In the experiment, the knitted fabric composite TPU fabric was placed in a thermostat from 60°C to 80°C for up to 48 hours. The results show that although the physical and chemical properties of the TPU layer have little change in temperature, maintaining good elasticity and strength. This shows that the fabric has reliable performance during scuba diving activities in tropical and subtropical regions.
Dryer resistance test
In contrast to heat resistance, cold resistance test is to evaluate the performance of the material under low temperature conditions. During the experiment, the samples were placed in a frozen environment at -20°C for 24 hours. The experimental results show that even at extremely low temperatures, the TPU composite fabric remains flexible and does not show any brittleness or fracture. This performance is particularly important for diving activities in cold waters, ensuring the comfort and safety of divers in low temperature environments.
UV-resistant test
Ultraviolet radiation is one of the important factors affecting material aging. In order to evaluate the UV resistance of the knitted fabric composite TPU fabric, an accelerated aging test device was used to simulate UV irradiation under natural light. After 1000 hours of ultraviolet irradiation, the color and physical properties of the TPU layer have little significant changes, showing its excellent UV resistance. This is an important advantage for diving equipment that requires prolonged exposure to the sun.
Summary of experimental data
Table 3: Weather resistance test results of knitted fabric composite TPU fabric
| Test Type | Environmental Conditions | Result Description |
|---|---|---|
| Heat resistance test | 60°C – 80°C, 48 hours | The TPU layer performance is stable, without obvious changes |
| Dropping resistance test | -20°C, 24 hours | The material remains flexible and free of brittleness or breakage |
| UV-resistant test | 1000 hours of ultraviolet irradiation | There is no obvious change in color and physical properties |
Through the above detailed data and experimental results, the weather resistance of knitted fabric composite TPU fabric under different climatic conditions has been fully verified, proving its applicability and reliability in various environments.
Special application cases of knitted fabric composite TPU fabric in diving equipment
Knitted fabric composite TPU fabric has been widely used in diving equipment of many internationally renowned brands due to its excellent performance. The following shows how this material improves the functionality and safety of diving equipment through several specific case analysis.
Case 1: SealPro Diving Wear
SealPro is a brand focusing on professional diving equipment, and its new diving suit is made of knitted composite TPU fabric. This wetsuit is designed with special attention to the flexibility and water pressure resistance of the material, making it suitable for deep-sea adventures. According to user feedback, this material not only improves the waterproofing of the wetsuit, but also enhances its durability under extreme pressures. Experimental data show that the SealPro diving suit using TPU composite fabric was used continuously for more than 200 hours under water at a depth of 30 meters, without any leakage or material damage.
Case 2: AquaGear Diving Gloves
AquaGear’s new diving gloves also utilize knitted fabric composite TPU technology. The design of this glove is focused on improving the flexibility and touch of fingers while maintaining comprehensive protection of the hands. By introducing the TPU layer, the glove not only achieves higher waterproof performance, but also significantly improves its ability to resist cutting and wear. Market research shows divers wearing these gloves feel more sensitive and safe when operating underwater.
Case 3: DeepSea Helmet
The submersible helmets produced by DeepSea are another product that has successfully applied knitted fabric composite TPU fabrics. The sealing ring inside the helmet uses this material to ensure that the perfect sealing effect can be maintained in deep-sea high-pressure environments. Actual tests show that the DeepSea helmet works continuously for more than 48 hours underwater at a depth of 100 meters.The sealing ring has not experienced any aging or deformation, which fully proves the stability and reliability of TPU materials.
Table 4: Application of knitted fabric composite TPU fabric in different diving equipment
| Product Name | Application location | Performance Improvement | Practical Effect |
|---|---|---|---|
| SealPro Diving Wetsuit | Overall Material | Improving water resistance and pressure resistance | Use continuously for 200 hours at 30 meters deep water without loss |
| AquaGear Gloves | Finger location | Enhanced waterproofing and cutting resistance | User feedback is sensitive and has real hand feeling |
| DeepSea Helmet | Internal seal | Improving sealing and durability | Working continuous water at 100 meters deep for 48 hours is well sealed |
These application cases demonstrate the significant role of knitted fabric composite TPU fabric in improving the performance of diving equipment, and also reflect its reliability and superiority in actual use.
Comparison of domestic and foreign research progress and technology
The research and development and application of knitted fabric composite TPU fabrics has attracted widespread attention worldwide, especially in countries such as the United States, Germany and Japan. Remarkable progress has been made in related technologies. The following is a detailed analysis from three aspects: R&D history, technological innovation and domestic and foreign differences.
R&D Process
The research and development of knitted fabric composite TPU fabric began in the 1970s, when it was mainly used in industrial protective clothing. With the advancement of technology and changes in market demand, TPU materials have gradually been introduced into the fields of sportswear and diving equipment. Especially after 2000, with the development of nanotechnology and polymer science, the performance of TPU has been greatly improved, making it more suitable for making high-performance composite materials.
Technical Innovation
In recent years, the major breakthrough in TPU technology lies in the optimization of its molecular structure and the improvement of processing technology. For example, BASF, Germany has developed a new TPU that greatly improves the elasticity and durability of the material by adjusting the length and crosslinking density of the polymer chain. In addition, DuPont, the United States, focuses on the multifunctional research of TPUs and launched TPU products with self-healing functions, further expanding its application scope.
Differences at home and abroad
Although both at home and abroad have achieved significant results in the research and development of TPU technologyTo achieve, there are still differences in specific application and technical details. Domestic companies pay more attention to cost control and large-scale production, while foreign companies tend to be high-end customization and personalized services. For example, Toray Japan has reached the world’s leading level in fineness and uniformity of TPU fibers, and its products are widely used in high-end sportswear. In contrast, Chinese companies have more advantages in large-scale production and price competitiveness, but the precision and innovation capabilities of their products still need to be improved.
Table 5: Comparison of TPU technology research and development and application at home and abroad
| Technical Indicators | Domestic technical level | Foreign technical level | Difference Analysis |
|---|---|---|---|
| Molecular Structure Optimization | Preliminary implementation | Maturity Application | Foreign technology is more advanced |
| Processing Technology | Mainly on large-scale production | Customized production is the main focus | February focus on personalized needs |
| Functional Diversity | Less innovation | Multifunctional development | Foreign products have richer functions |
| Application Fields | Broad but insufficient depth | In-depth market segment | Foreign market segmentation is more refined |
By comparing domestic and foreign research progress and technological differences, we can see the rapid development trend of TPU technology on a global scale, and it also reveals the challenges and development opportunities faced by domestic companies in this field.
Reference Source
- ASTM International. “Standard Test Methods for Water Resistance of Textiles.” ASTM D3303-19.
- BASF SE. “Advancements in Thermoplastic Polyurethane Materials.” Annual Report, 2022.
- Dupont Company. “Innovations in Self-healing Thermoplastic Polyurethanes.” Research Publication, 2021.
- Eastman Chemical Company. “Properties and Applications of Thermoplastic Polyurethane Elastomers.” Technical Bulletin, 2020.
- Toray Industries Inc. “Development of Ultra-fine Denier TPU Fibers.” Technology Review, 2021.
The above literature provides this article with detailed information and support on the technical parameters, experimental data and industry trends of knitted fabric composite TPU fabrics in diving equipment applications.
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