Cross-section of Flame Retardant Multi-fiber Blended Yarn

In order to study the fiber distribution of multi fiber blended yarn, the preparation of cross-section image are discussed in this paper. According to the performance of flame retardant blended yarn, which is composed of meta-aramid, poly (phenylene-1,3,4-oxadiazole) (POD), flame retardant viscose and flame retardant vinylon, dyes Argazol Red NF-3B and Cationic Blue SD-GSL are applied to dyeing the flame retardant blended yarn by two baths via a two-stage process. After surface treatment by plasma, the yarn was made into continuous slices by using the technique of resin embedding. Then the cross section image of the blended yarn was obtained by CX41RF Microscope (x100). Finally, by means of Photoshop image processing tool box the fiber distribution of the blended yarn were analyzed according to the different geometric morphological characters. Results show that each component of the flame retardant blended yarn can be gained quickly and simply and recognized easily with this method.