合成高分子系床仕上材料のよごれの実情 : 合成高分子系床仕上材料のよごれの評価方法に関する研究 (その 1)

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タイトル別名
  • THE ACTUAL STATE OF STAINS ON POLYMERIC FLOOR FINISHING MATERIALS : Development of a method of evaluation for the state of stains on polymeric floor finishing materials (Part 1)
  • 合成高分子系床仕上材料のよごれの評価方法に関する研究-1-合成高分子系床仕上材料のよごれの実情
  • ゴウセイ コウブンシケイ ユカシアゲ ザイリョウ ノ ヨゴレ ノ ヒョウカ ホ

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抄録

The anti-staining property of materials is one of the most important ones for floor finishes, particularly in regard to their appearance and sanitation. The precise mechanism of staining, however, has not fully been explained. As an initial step toward a complete understanding of the nature of staining, this paper first examines the relevant concepts through a review of past studies, and secondly, develops and tests an evaluation method for the state of strains. The state of staining of actual floors in various settings was observed in order to understand the causes of staining. General observation revealed that stains on floors appeared clearly when the neighboring floor area was clean. Detailed observation revealed that among other causes of stain, fine scratches filled with such staining agents as clay and sand, were found to be dominant. In order to clarify the procedure of staining, an exposure test and a sensory test were conducted. Five different PVC floor tiles were exposed in two settings; the entrance hall and the elevator in the Deparment of Architecture Building at Tokyo Institute of Technology, where the amount of pedestrian traffic was specified as approximately 1500/day and 1000/day respectively. This exposure test provided a total of 90 sample tiles differing in material (5 types), exposure time (9 durations; one day to 90 days) and location (2 places) for the sensory test as the stimuli. In the sensory test, the degree of staining of each sample tile was visually rated by 30 subjects. The results revealed that the apparent stain increases rapidly in the initial stage of exposure. As time passes however, the rate slows down. Finally, the apparent degree of staining becomes constant even though the number of physical stain agents increases as time passes. In summary, the present paper clarified the major factors influencing staining and develops a method of evaluation for the state of staining. Directions for future research were also suggested.

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