캔버스 보강처리(Patching)를 위한 Lining용 접착제의 적용 연구
A Study on the Application of Lining Adhesives to Canvas Reinforcement Treatment(Patching)
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초록
캔버스 부분 보강처리에 사용되는 접착제는 선행연구 조사를 통해 배접(Lining)용 접착 제와 동일한 것을 확인하였다. 그러나 배접용 접착제의 부분 보강처리 적용에 따른 물성에 대 한 평가나 연구가 이루어지지 않았다. 본 연구에서는 부분 보강처리에 적용하였을 때 나타나는 표면 변화 양상 및 물리적 특성을 제시하였다. 선행연구를 통해 선정된 배접용 접착제 7종에 대하여 접촉각 측정과 부분 보강처리 적용에 따른 색상 변화, 표면 변화, 인장강도 평가를 진행 하였다. 열화 실험 결과 밀가루 풀(Glue-paste)는 수분에 취약하였으며 환경 변화 시 유연성이 저하되었다. Beva film은 환경 변화 시 접착력의 저하가 가장 심하였다. 밀가루 풀과 Beva film의 경우 색상 변화에 가장 취약하였으며 주로 황변, 갈변과 같은 변색이 나타났다. Plextol B500은 환경 변화 시 접착력 및 유연성의 증가 폭이 가장 높은 것으로 확인되었다. Welding powder는 환경 변화 시 높은 접착력에 비해 낮은 변형률이 확인되었으며, 캔버스 천 전면에 변형이 나타 났다. 성분이 동일한 접착제 간 친수성이 높은 경우 항복응력 및 최대 변형률의 감소가 확인되 었다. 이는 친수성 특성이 접착력과 유연성에 영향을 줄 수 있는 것으로 판단된다. 열분해온도 및 유리전이온도가 낮은 접착제는 접착력 및 유연성의 변화폭이 크게 확인되었다. 부분 보강처 리 적용 후 환경 변화 노출에 따른 접착력의 급격한 저하 또는 증가는 보강천의 탈락, 캔버스 천의 변형과 같은 문제를 유발할 수 있다.
Abstract
Canvas patching utilizes various adhesives for localized reinforcement treatment, yet evaluations of their properties remain insufficient. This study presents surface changes and physical properties observed when seven types of lining adhesives, selected from prior research, were applied. Evaluations included contact angles, color changes, surface alterations, and tensile strength. Results indicated that glue paste was highly susceptible to moisture and exhibited decreased flexibility with environmental changes, while Beva film showed the most significant reduction in adhesion. Both glue paste and Beva film were sensitive to color changes, primarily displaying yellowing and browning. Plextol B500 demonstrated the greatest increase in adhesion and flexibility under environmental stress. Welding powder exhibited high adhesion but lower strain rates, causing notable deformations across the canvas. Within the same adhesive composition, higher hydrophilicity correlated with reduced yield stress and maximum strain, suggesting that hydrophilicity affects adhesion and flexibility. Adhesives with lower thermal decomposition and glass transition temperatures experienced greater changes in adhesion and flexibility. Rapid changes in adhesion following localized reinforcement treatment can lead to issues like peeling of reinforcing fabric or deformation of the canvas.
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