反射光谱曲线微小变化应用于再生聚酯色相改善  

Color phase improvement of recycled polyester by subtle fluctuation of reflectance spectral curves

作　　者：彭文婷 李文刚[1] PENG Wenting;LI Wengang(State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Materials Science and Engineering,Donghua University,Shanghai 201620,China)

机构地区：[1]东华大学材料科学与工程学院,纤维材料改性国家重点实验室,上海201620

出　　处：《上海纺织科技》2024年第12期73-77,共5页Shanghai Textile Science & Technology

摘　　要：为解决废旧聚酯回收再利用后会出现发黄、b值高的问题,采用透明染料作为调色剂并结合Bezier光谱曲线模型对废旧聚酯色值进行数值化改善。结果表明:使用色彩明艳、耐温性良好的透明染料LANXESS溶剂紫13和LANXESS溶剂紫36可有效降低再生聚酯b值。经过优化后的数学模型在相关性强的特征波段预测计算,再生聚酯色相达到目标样b值所需染料质量分数为39×10^(-4)%。在此条件下,再生聚酯色相b值由11.35下降至3.89,明度L值为79.49。In order to solve the problems of yellowing and high b-value of waste polyester after recycling,transparent dyes are used as toners and the Bezier spectral curve model is combined to numerically improve the color values of recycled polyester.The results show that the use of transparent dyes LANXESS solvent violet 13 and LANXESS solvent violet 36,which have bright colors and good temperature resistance,can effectively reduce the b-value of recycled polyester.The optimized mathematical model predicts and calculates the required dye mass fraction for the regenerated polyester color to reach the target sample b value in highly correlated characteristic bands,which is 39×10^(-4)%.Under these conditions,the hue b value of recycled polyester can decrease from 11.35 to 3.89 with the brightness L value of 79.49.

关 键 词：再生聚酯 色相 色值 Bezier模型 

分 类 号：TQ342.2[化学工程—化纤工业]