The Studies of Low Temperature Dyeing on Silk Fibers I. Low Temperature Dyeing of Silk Fiber in the Milling Type Acid Dye

견의 저온 염색에 관한 연구 I. 산성 Milling형 염색에 있어서의 저온염색

Using the new type auxiliary(K-1), dyeing experiment was done at the various dyeing conditions and the effects of auxiliary on the dyeing properties of acid milling dye for the silk fiber were dicussed. The results obtained were as follows; 1. The exhaust rate of acid milling dye was increased according to the auxiliary concentration at dyebath pH 7, But the increasing tendency of exhaust rate was decreased above auxiliary concentration 3% o. w. f.. 2. It was the same tendency of exhaust rate at dyebath pH 5, but the diffusion was more powerful at dyebath pH 7 than pH 5. 3. The decreasing ratio of exhaust rate according to dye concentration increasing was lower at auxiliary addition than auxiliary non-addition. 4. The exhaust rate curve according to increasing dyeing temperature showed the inflection point at auxiliary non-addition, but it was not observed in auxiliary addition. Consequently, it seems to be avoid that the occurrence of uneven dyeing at auxiliary addition.

견의 저온염색용 조제(K-1)를 사용하여 염료 농도, 염욕의 pH, 염색시간에 따른 염색속도를 구하여 이 저온염색용가 염색에 미치는 영향을 분석한 결과를 다음과 같이 요약한다. 1. pH 7에서 K-1의 농도가 증가할수록 무첨가구에 비해 흡진율은 증가 하였으며, K-1의 농도가 3% o.w.f. 이상에서는 증가의 경향이 둔화되었다. 2. pH 5에서도 무첨가보다 K-1의 첨가구에서 높은 흡진율을 보였으며, pH 7의 5$0^{\circ}C$ 첨가구가 pH 5, 5$0^{\circ}C$의 무첨가구보다 확산성은 높게 나타났다. 3. 염료 농도별로 볼 때 pH 7과 pH 5에서 모두 K-l 첨가구에서는 무첨가구보다 흡진율이 클 뿐만 아니라 염료 농도에 따른 흡진율 감소가 적게 일어났다.