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Fluorescent Whitening Agent FDT is a specialized optical brightening agent designed for polyester and its blended fabrics. This brightening agent is formulated to deliver exceptional whitening effects at low temperatures, making it an ideal solution for a wide range of textile applications. FDT enhances the overall appearance of fabrics by imparting a bright, clean white look, even when used in small quantities. Its high chemical stability in challenging environments further adds to its versatility and reliability in the textile industry.
Key Features and Typical Benefits
1. Effective at Low Temperatures: One of the key features of Fluorescent Whitening Agent FDT is its ability to work efficiently at low temperatures. This is beneficial for energy savings during the textile whitening process and for preserving the integrity of sensitive fabrics that cannot withstand high heat.
2. Low Dosage, High Whiteness: FDT is designed to deliver high whiteness even when used in small amounts. This not only makes it more cost-effective for manufacturers but also ensures that the fabric achieves a bright and vivid appearance without the need for excessive product usage.
3. Chemical Stability: FDT exhibits good stability to acids, alkalis, and hydrogen peroxide. This allows it to maintain its brightening effect in various chemical environments, ensuring consistency and durability in whitening processes that involve other chemical treatments.
Benefits
1. Cost-Efficiency: Thanks to its low dosage requirement, FDT reduces material costs while still providing high levels of whiteness. This makes it an economical choice for manufacturers looking to maximize the efficiency of their production processes without sacrificing quality.
2. Versatility Across Fiber Types: In addition to polyester, FDT is also suitable for other synthetic fabrics such as acetate fibers. Its adaptability makes it a versatile option for textile manufacturers dealing with a range of fabric types and blends.
3. Long-Lasting Brightness: The optical brightening effects of FDT are long-lasting due to its good fastness properties. Textiles treated with FDT maintain their whiteness and brightness even after multiple wash cycles and exposure to environmental conditions.
Properties
1. Appearance: Fluorescent Whitening Agent FDT appears as a light yellow dispersing liquid. This makes it easy to incorporate into textile processing systems, ensuring even distribution throughout the fabric.
2. Ultraviolet Absorption: FDT exhibits ultraviolet absorption in the range of 185-205 nm, which enhances its brightening effects by making fabrics more reflective of UV light. This UV absorption also contributes to the visual appeal of the fabrics under natural and artificial lighting conditions.
3. Ionic Character: FDT is a non-ionic product, which allows it to be compatible with a wide variety of other substances used in textile processing. It can easily blend with other treatment agents without causing undesirable interactions.
4. pH Value: The pH of a 1% solution of FDT falls within the range of 7.5 to 9.5, ensuring that it remains stable and effective in a neutral to slightly alkaline environment. This makes it suitable for a variety of textile treatment conditions.
5. Flash Point: FDT has a flash point of over 93°C, providing safety during the processing and handling stages, especially in environments where high temperatures are involved.
6. Density: The product has a density of 0.98-1.08 g/cm³ at 25°C, allowing for accurate and consistent measurement during preparation and application in textile whitening processes.
Applications
1. Polyester Fabrics: FDT is specifically formulated to enhance the brightness and whiteness of polyester textiles, ensuring a brilliant and long-lasting white finish.
2. Blended Fabrics: FDT is compatible with a wide variety of fabric blends, particularly polyester-cotton, polyester-linen, and other synthetic mixtures, ensuring consistent whitening performance across different fiber compositions.
3. Acetate Fiber Whitening: FDT’s adaptability makes it suitable for the whitening of acetate fibers, offering similar benefits of high whiteness and low dosage, while ensuring chemical stability in the presence of acids and alkalis commonly used in acetate treatment.
