| 摘要 |
PURPOSE: A pH sensitive coating agent and a spray can paint using the same are provided to maintain high leakage sensitivity by increasing a tracer diffusion rate while facilitating the removal of test materials. CONSTITUTION: A pH sensitive coating agent sensing the leakage includes a water soluble polymer, fiber, solvent and pH indicator. A peel-off type polymer membrane is formed. The pH sensitive coating agent further includes fine particles. The fiber includes porous fibers, hollow fibers, or their mixture. The water soluble polymer is one selected from the group consisting of polyvinylalcohol, polyvinylpyrrolidone, polyacrylic acid, polyacrylamide, and hydroxyethylpropyl cellulose. |
