Preparation and performance of photochromic ramie fancy yarns
Photochromic ramie fancy yarns were prepared using ramie yarns and photochromic polyester filaments as raw materials.The effects of twist,overfeeding ratio of front roller and tension multiple on photochromatic ramie fancy yarns were investigated through single factor test.The optimized preparation process parameters were as follows:the twist was 70 twists/(10 cm),the overfeeding ratio of front roller was 1.15,and the tension multiple was 1.0.The photochromic properties,mechanical properties and evenness of the photochromic ramie fancy yarn prepared by the optimized process were tested and analyzed.The results showed that the prepared photochromic ramie fancy yarn showed good photochromic properties,mechanical properties and yarn evenness.At the same time,the fabric woven with the fancy yarn as the weft yarn had obvious photochromic effect and rapid fading.
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