견직물에 대한 요소수지가공에 관한 연구

Studies on Finshing of Silk Fabric with Urea Formaldehyde Resin.

요소-formaldehyde 수지를 여러 가지 조건에서 견직물에 처리하여 다음과 같은 결과를 얻었다. 1. 수명수지의 생성 조건은 요소 1mol에 대하여 formaline을 2mod 이상 사용하여 pH 4∼5로 수지욕을 만들어야 한다. 2. 수지농도가 증가하는데 비례적으로 수지부착율도 증가한다. 상대적으로 수분율을 감소하는 경향을 보였다. 3. wet pick 70%, 80%, 90%, 100% 중에서 70%일 경우가 수지잔존율이 가장 높았다. 4. curing 조건에 따른 수지의 부착율은 온도가 높을수록 탈락율은 감소하며 부착율은 증가된다. 5. 촉매의 양은 (NH4)2SO4 경우는 수지에 대하여 2.5%, HCI 경우는 1%, tataric acid 경우는 10%가 적당하였고 나머지 NaHCO3, Zn(NO3)2·6H2O인 경우는 분석이 곤란하였다. 6. 촉매의 종류에 따른 부착율은 산성 혹은 (NH4)2SO4와 같은 잠복성 촉매가 뛰어난 효과를 나타냈다. 7. 촉매에 따른 세탁견뢰성은 산성 촉매일수록 뛰어난 효과를 나타냈다.

The studies on the reaction of Urea-Formaldehyde(UF) resin with silk fabric were studied, and the final results summarized as below; 1. The pH and UF molar ratio for preparing liquid resin was found at pH 4-5 and UF molar ration 1:2 and above. 2. The weight gains were increased with respect to increase in concentration of UF resin solution, while moisture regains were decreased. 3. The weight gains were significant high in case of wet pick up 70%. 4. The weight gains were increased with respect to increase in curing temperature and the amount of catalyst((NH4)2SO4) found was 2.5% on the weight of Dimethylol urea and Hydrochloric acid was 1%, Tartaric acid was 10%. 5. The effect of different catalyst on wash fastness of UF resin was good where as in case of acidic catalyst was significantly high. 6. The weight gains with different catalyst was high where as in case of potential acid catalyst was significantly high. 7. The crease recovery are increased with the increase of the weight gain of silk fabric and also stiffness are increased.