Study on Refining Technique of Raw Lacquer (II) - Refining and Mechanical Properties of Refined Lacquer according as Mixing Rate of Components -

옻칠의 정제기술에 관한 연구(II) - 조성분 배합에 따른 정제특성 및 기계적 성질 -

When percentages of the component of raw lacquer were changed by adding each components that is urushiol, polysaccharide and glycoprotein, the physical properties of refined lacquer were changed and the period of refining also were changed. When polysaccharide component extracted from raw lacquer was added in raw lacquer, the period of refining was shortened about 1/3 times and this refined lacquer film was dried faster than the refined lacquer which was not added any other components. When urushiol extracted from raw lacquer was added in raw lacquer, the transparency of dried film was improved. A case of Guizhoushang was improved of the tensile strength of dried film. When both urushiol and polysaccharide were added in raw lacquer, the drying time of refined lacquer was shortened and the tensile strength of them also was improved.

옻칠은 생칠의 조성분 배합에 따라서 정제시간이 단축되며, 또한 옻칠의 물리적 성질이 달라진다. 추출된 다당류를 첨가하였을 때, 정제시간은 첨가하지 않았을 때보다 1/3 정도 단축되는 경향을 보였고 건조시간도 1/3~1/2 정도 짧아지는 경향을 보였다. 우루시올을 첨가하였을 때는 투명성이 향상되는 경향을 보였으나 뚜렷하지는 않았다. 또한 귀주산의 경우 10%의 우루시올을 첨가하였을 때, 인장강도가 향상되는 경향을 보였다. 우루시올과 다당류를 함께 첨가하였을 때는 건조시간의 단축 및 인장강도의 향상이 뚜렷하게 나타남을 알 수 있었다.