物性よりみた応力塗料膜の構造(I) : 応力塗料用石灰ロジンについて

概要

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In the previous report, the author has been described an experimental study which improved the strain-sensitivity of brittle lacquer by applying "solvent-cracking" as follows : When the coating using calcium-rosin as basic ingredient comes in contact with solvents, it shows "solvent-cracking" which is peculiar to high polymers, and thus the cracking of coating occurs at lower stress than in air. It will be necessary to find out the molecular structure of brittle coating, in order to carry out theoretical analysis on the mechanism of solvent-cracking and interaction between the coating and solvent. In the first place, the author has investigated the molecular structure of calcium-rosin through physico-chemistry, chemical and instrumental analysis, because calcium-rosin is used generally as a basic ingredient for a brittle lacquer, such as "Dailar" and "Stresscoat", etc.. As the result the structural model of coating has been obtained in which calcium salt is distributed uniformly in rosin acid and the latter is considered to be a binder.
社団法人日本材料学会の論文
1962-01-15