各種金属材料および防錆被覆の大気腐食に関する研究 (第1報)

(その4) 有機被覆類暴露1ヵ年の結果

抄録

Weathering test on protective coatings has been carried out for one year at the abovementioned seven sites (cf. Part 1).
The protective coatings exposed included 76 kinds. The rust-inhibitive pigments examined were: red lead, lead suboxide, lead cyanamide, calcium plumbate, basic lead chromate, metallic lead, zinc chromate, zinc oxide, zinc powder, aluminum powder and iron oxide in linseed oil and alkyd resin. On the other hand, to determine the vehicle-inhibitive effect, various resin-oil-, phenol-, silicone-, styrene-, melamine-, alkyd-, four kinds of epoxy-, two cellulose-, urethane-, vinyl chloride-, acetate-, vinylidine chloride-, vinyl chloride-, methyl methacrylate-, chlorinated rubber, styrenebutadiene copolymer and linseed oil were used.
The results showed that almost all the panels kept the original appearances and the most severe attack was observed in the seaside and subtropical districts, while the least in the inland and cold districts.
This weathering test is projected to be continued for five years.