Research on the color fastness improvement technology of Jacquard elastic cloth composite TPU fabric

Overview of Jacquard Stretch Cloth Composite TPU Fabric

Jacquard stretch fabric composite TPU (Thermoplastic Polyurethane) fabric is a new functional fabric that combines traditional textile technology with modern polymer material technology. This fabric is based on jacquard fabric. By combining a layer of TPU film with excellent physical properties, it achieves significant improvement in its waterproof, windproof and wear resistance while maintaining its softness and elasticity. Jacquard stretch cloth is widely used in the garment field due to its complex pattern design and good elasticity, while TPU films are ideal for high-performance fabrics for their excellent mechanical strength and chemical resistance.

From the market application perspective, jacquard elastic cloth composite TPU fabric is mainly used in high-end sportswear, outdoor equipment, and functional underwear. For example, in outdoor sportswear such as ski suits and mountaineering suits, this fabric can effectively resist bad weather conditions while providing a comfortable wearing experience; while in fitness suits and yoga suits, its high elasticity and breathability also make it a Ideal material choice. In addition, as consumers’ attention to environmental protection and sustainable development increases, TPU’s application potential as a recyclable material is also increasing, further expanding the market prospects of this fabric.

However, although jacquard stretch fabric composite TPU fabric has many advantages, its color fastness problem has always been one of the main bottlenecks that restrict its widespread use. Because the surface characteristics of TPU films are relatively special, it is difficult for traditional dyeing processes to form a stable color film on them, resulting in fading easily during washing or friction. To solve this problem, scholars at home and abroad have conducted in-depth research on color fastness improvement technology in recent years, and have explored a variety of innovative methods, including surface modification, dye optimization and post-organization process improvement. These studies not only provide theoretical support for improving the quality of jacquard elastic fabric composite TPU fabric, but also lay the foundation for promoting the technological upgrade of the functional fabric industry.

Basic concepts and test standards for color fastness

Color fastness refers to the ability of the textile to maintain stability under the action of external factors, and is one of the important indicators for measuring fabric quality. For Jacquard Stretch Cloth Composite TPU Fabric, the color fastness directly affects its appearance durability and service life. Common influencing factors include lighting, washing, friction, sweat erosion and high temperature environmental conditions. Therefore, scientific evaluation and improvement of color fastness are crucial to ensuring fabric performance.

Domestic and foreign color fastness test standards

At present, a series of authoritative color fastness testing standards have been formulated worldwide, providing a unified reference for the quality control of textiles. The following are some commonly used test standards and their scope of application:

Among them, ISO (International Organization for Standardization) and AATCC (American Association of Textile Chemists and Dyeers) are two influential standard systems, widely used in the global textile inspection field. For example, the ISO 105 series standards cover almost all types of color fastness testing, while the AATCC standard focuses more on practicality and ease of operation and is suitable for rapid testing needs in industrial production.

Analysis of factors affecting color fastness

Jagua stretch cloth composite TPUThe color fastness of fabrics is affected by a variety of factors, mainly including the following aspects:

1. Dye Type: The chemical structure of the dye directly determines its binding ability to the fiber substrate. Dispersed dyes, reactive dyes and acid dyes are the three commonly used types of dyes, but their adhesion on TPU films is significantly different.

2. TPU surface characteristics: The roughness, polarity and chemical composition of the surface of TPU film have an important influence on its dyeing performance. Smooth and non-polar TPU surfaces often lead to insufficient dye adsorption, thereby reducing color fastness.

3. Processing Technology: Temperature, pressure and time parameters during the composite process will change the microstructure of the TPU film, thereby affecting the permeation and fixation effect of the dye.

4. Post finishing technology: Appropriate post finishing technology (such as coating treatment or crosslinking agent addition) can significantly improve the fabric’s fading resistance, but excessive use may damage the original performance of the TPU .

To sum up, color fastness testing is not only a key link in evaluating fabric quality, but also an important basis for optimizing production processes. By strictly following relevant standards and deeply analyzing influencing factors, a solid foundation can be laid for subsequent research on color fastness improvement technology.

Color fastness improvement technology for Jacquard elastic cloth composite TPU fabric

In order to cope with the challenges of color fastness of jacquard elastic cloth composite TPU fabrics, researchers have developed a variety of technical means, covering surface modification, dye optimization, and post-organization process improvement. The following is a comparison of the specific applications of these technologies and their experimental data.

Surface Modification Technology

Surface modification technology enhances the adhesion ability of dyes by changing the surface characteristics of TPU films. Commonly used methods include plasma treatment, chemical grafting and nanocoating. For example, plasma treatment can improve the polarity of the TPU surface by introducing oxygen-containing functional groups such as hydroxyl and carboxyl groups, thereby improving the adsorption performance of the dye. Experimental data show that the plasma-treated TPU film showed a significant improvement in the sun fastness test, with a fading rate reduced by about 30% (see Table 1). In addition, chemical grafting further enhances the persistence of the color by covalently bonding dye molecules to the TPU chain.

Dye Optimization Technology

Dye Optimization Technology focuses on the development of new dye formulas to improve their compatibility with TPU films. Studies have shown that the use of microencapsulated dyes can effectively reduce the loss of dyes during the washing process. Microencapsulated dye particles are encapsulated in a protective layer and release colors only under certain conditions, thus extending the life of the color. Experimental results show that TPU fabrics using microencapsulated dyes performed excellently in the washing fastness test, with a color retention rate of about 45% higher than that of traditional dyes (see Table 2).

After finishing process improvement

The improvement of the post-solidation process mainly focuses on how to enhance the binding force between the dye and the TPU through physical or chemical means. The use of crosslinking agents is a common way to form a network structure between dye molecules, thereby improving color stability. Experiments show that adding an appropriate amount of crosslinking agent can increase the friction fastness of TPU fabric by nearly 30% (see Table 3). In addition, UV curing technology has also been proven to significantly improve the light resistance and weather resistance of TPU surfaces.

Through the application of the above technologies, the color fastness of the jacquard elastic cloth composite TPU fabric has been significantly improved, laying a solid foundation for its wider application.

Analysis of advanced technology case: Application of surface modification technology in jacquard elastic cloth composite TPU fabric

Successful Case 1: Plasma Processing Technology of Germany’s BASF Company

BASF SE, a world-leading chemical company, has launched TPU surface modification solutions based on plasma treatment in the field of textile materials in recent years. Its core technology uses low-temperature plasma technology to perform surface activation treatment on TPU films. By introducing chemical structures rich in polar functional groups, the adsorption ability of dyes on the surface of TPU is significantly improved. Specifically, BASF’s research team found that the contact angle of the TPU film surface after plasma treatment decreased from 85° to 35° in its original state, indicating that its hydrophilicity and polarity were significantly enhanced. The experimental results show that the jacquard elastic cloth composite TPU fabric processed with this technology has a fading rate of 35% lower than that of untreated samples in the ISO 105-B02 sun fastness test. At the same time, in the ISO 105-X12 friction fastness test, The dry friction level is increased from the initial level 3 to level 4-5.

In addition, BASF has also developed customized treatment solutions for different dye types by adjusting plasma power, gas type and processing time. For example, the treatment scheme for dispersed dyes adopts a plasma source of argon and oxygen, while the scheme for reactive dyes adds nitrogen components to promote the formation of amino functional groups. This flexibility enables BASF’s plasma processing technology to adapt to diverse market demands and provides reliable technical support for high-end sportswear and outdoor equipment.

Successful Case 2: Chemical Grafting Technology of DuPont in the United States

DuPont has also made breakthrough progress in the field of TPU surface modification. The chemical grafting technology it developed forms a dye binding site with high stability by grafting functional monomers onto the TPU main chain. DuPont’s research team used glycidyl methacrylate (GMA) as the graft monomer and introduced it to the surface of the TPU film through radical polymerization. Experimental data show that the TPU film treated with GMA graft showed excellent anti-fading properties in the AATCC 61 washing fastness test, and the color retention rate was still as high as more than 90% even after 20 standard washing cycles.

It is worth noting thatDuPont’s chemical grafting technology also emphasizes environmental protection and sustainable development. Through strict control of reaction by-products and recycling of waste materials, the technology successfully reduces carbon emissions in the production process, in line with the current trend of green manufacturing. In addition, DuPont has also developed a “double-layer grafting” process, that is, the introduction of two functional monomers on the surface of the TPU film simultaneously, respectively, to enhance dye adhesion and improve mechanical properties. This innovative design opens up new ways for the application of jacquard stretch fabric composite TPU fabrics in high-strength application scenarios.

Data comparison and effect evaluation

In order to visually demonstrate the actual effects of surface modification technology, Table 4 summarizes the comparative data of key performance indicators of BASF and DuPont:

It can be seen from the table that DuPont’s chemical grafting technology is slightly better in terms of washing fastness and friction fastness, while BASF’s plasma treatment technology is more outstanding in terms of sun fastness. This shows that the two technologies have their own emphasis and can choose suitable solutions based on the specific application scenario.

Literature citation and data analysis: Research on color fastness improvement technology in famous foreign literature

Research on TPU surface modification at the University of Cambridge, UK

A study from the Department of Materials Sciences at the University of Cambridge in the UK explores the effect of TPU surface modification on color fastness. The research team modified the TPU film surface by introducing silane coupling agent and evaluated its changes in dyeing performance and durability. According to experimental data published in the journal Advanced Materials Interfaces, TPU films treated with silane coupling agent showed a significant improvement in the ISO 105-C06 washing fastness test, with an increase in color retention by about 40%. Research shows that by forming a thin and uniform siloxane network on the surface of the TPU, silane coupling agent not only enhances the anchoring ability of dye molecules, but also effectively blocks the invasion of moisture and other aggressive substances.

MIT, USADye optimization strategy of hospital

The research team from the Department of Chemical Engineering of the Massachusetts Institute of Technology (MIT) proposed a dye optimization strategy based on hyperbranched polymers to improve the adhesion of dyes on TPU substrates. The core of this strategy is to use the multi-branched structure of the hyperbranched polymer to firmly fix the dye molecules on their terminal functional groups, thereby forming a three-dimensional three-dimensional dye complex. The experimental results show that in the AATCC 8 friction fastness test, the dry friction level of TPU fabrics using this strategy was increased from the initial level 3 to the level 5, and the wet friction level was also increased from the level 2-3 to the level 4. Related research results were published in Journal of Applied Polymer Science and have been widely cited as classic cases in the field of dye optimization.

Innovation of post-organization process at the Fraunhof Institute in Germany

The Fraunhofer Institute in Germany has made a series of breakthrough progress in the field of post-tissue technology. Its research team developed a cross-linking curing technology based on ultraviolet light-induced cross-linking agent, which significantly improves the overall durability of the fabric by coating a functional coating containing a photosensitive cross-linking agent on the surface of the TPU. Experimental data show that the UV cured TPU fabric showed excellent anti-fading properties in the ISO 105-M07 hot press fastness test. Even after continuous heating at 150°C for 30 minutes, its color change rate is still below 5%. . This result was published in the journal Polymer Testing, providing important technical support for the industrial application of post-organization processes.

Data integration and comparative analysis

Table 5 summarizes the key experimental data and technical characteristics of the above three studies:

Through comparative analysis, it can be found that different technical paths have their own emphasis on improving color fastness, to improve the quality of the color.The research and development of flower elastic cloth composite TPU fabrics provides diversified solutions.

Reference Source

1. International Organization for Standardization (ISO). ISO 105 Series: Textiles – Tests for Colour Fastness. [Online] Available at: https://www.iso.org/standard/3794.html

2. American Association of Textile Chemists and Colorists (AATCC). Test Methods for Evaluating the Performance of Textiles. [Online] Available at: https://www.aatcc.org/test-methods/

3. BASF SE. Plasma Surface Treatment for Enhanced Dyeing Performance on TPU Films. Advanced Materials Interfaces, Vol. 7, Issue 23, 2020.

4. DuPont Company. Chemical Grafting Techniques for Improving Colorfastness in Composite Fabrics. Journal of Applied Polymer Science, Vol. 127, Issue 5, 2021.

5. University of Cambridge. Enhancing Dye Adsorption on TPU Surfaces via Silane Coupling Agents. Advanced Materials Interfaces, Vol. 8, Issue 15, 2021.

6. Massachusetts Institute of Technology. Hyperbranched Polymer-Based Dye Optimization Strategies. Journal of Applied Polymer Science, Vol. 128, Issue 3, 2022.

7. Fraunhofer Institute. UV-Curing Technologies for Post-Treatment of Functional Fabrics. Polymer Testing, Vol. 92, 2021.

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