Abstract
Warp sizing is the most important process of weaving preparation in the textile industry. Permeating and coating of sizing paste into/on warp yarns directly determine the quality of sized yarns. However, there are many significant drawbacks, such as low accuracy and narrow variety adaptability for sizing agents and warp yarns, in the traditional determination method of permeation and coating property of sizing paste. Focusing on the problem, this investigation introduced aggregation-induced emission (AIE) fluorogen to prepare a fluorescent sizing agent. The interface of sizing agent in textile could be accurately visualized by AIE fluorogen. The three indexes to indicate the permeability and coating property of sizing paste, i.e. permeation percentage, coating percentage and integrity percentage of sizing film, have been determined accurately and conveniently. This investigation efficiently solves the difficult problem of evaluating permeation and coating property of sizing paste and has a significant guiding function on accurate determination of the quality of sized yarns.
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