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[Chemical Knowledge]：Detection Method and Analysis Technology of Polyester Staple Fiber

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Polyester Staple Fiber Testing Method

Polyester staple fiber, as an important synthetic fiber raw material, is widely used in the textile industry. The stability of its quality directly affects the quality and performance of the finished product. Therefore, how to accurately and quickly detect the quality of polyester staple fiber has become a key task in the textile industry. Below, we will introduce several commonly used polyester staple fiber detection methods:

Fiber appearance testing method: through the naked eye to observe the appearance of staple fiber, including color, shape, surface gloss and other characteristics, preliminary judgment of the quality of staple fiber.

Length distribution analysis method: the polyester staple fiber was observed by optical microscope or electron microscope, and the proportion of different length fibers was analyzed by image processing technology, so as to evaluate the length distribution of staple fiber.

Tensile performance test method: through tensile test, the tensile strength, elongation at break and other parameters of staple fiber under certain conditions are measured to evaluate the mechanical properties of staple fiber.

Chemical composition analysis method: use chemical methods to analyze the composition of staple fiber, including the content of polyester components, impurities and doping detection, etc., to ensure that the composition of staple fiber meets the requirements.

The above are the commonly used polyester staple fiber detection methods, each method has its unique advantages and limitations. In practical applications, appropriate methods can be selected or combined according to specific needs to ensure a comprehensive inspection and evaluation of the quality of polyester staple fibers.

Polyester Staple Fiber Analysis Technology

In addition to testing methods, analytical techniques also play an important role in the quality control of polyester staple fibers. Below, we will introduce several commonly used polyester staple fiber analysis techniques:

Thermal analysis techniques: including thermal reanalysis (TGA), differential thermal analysis (DSC), etc., through the analysis of the thermal behavior of polyester short fiber at different temperatures, to evaluate its thermal stability and thermal performance.

Infrared spectrum analysis technology: using infrared spectrometer to analyze polyester staple fiber, obtain its molecular structure information, so as to evaluate its chemical composition and structural characteristics.

X-ray diffraction analysis technology: by X-ray diffraction analysis of polyester staple fiber, study its crystal structure and crystal characteristics, to provide a reference for its performance improvement.

Scanning electron microscope technology: The surface morphology and microstructure of polyester staple fiber were observed by scanning electron microscope, and its surface characteristics and morphological characteristics were revealed, which provided guidance for the optimization of production process.

Through the above analysis techniques, we can fully understand the physical, chemical and structural characteristics of polyester staple fiber, and provide a scientific basis for its quality control and performance optimization. In the textile industry, continuous exploration and application of new analysis techniques will help improve the quality level and market competitiveness of polyester staple fibers.

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