コロイダルシリカ溶液による木材無機質複合体の特性 : 耐蟻性, 耐光性, 硬さ, 耐摩耗性(<特集>木質材料)

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Following the previous paper treating with the production and properties of wood-mineral composites using the colloidal silica solution system, we investigated termite resistance, photo stability, hardness, and abrasion resistance of composites. The composites were prepared by the same process previously reported using a colloidal silica solution and sapwood or heartwood of Sugi(Cryptomeria japonica D.Don). The composites made by using the colloidal silica-boric acid system showed an excellent termite resistance with the neglible weight losses of specimens and 100% mortalities of workers and soldiers, and the metal compounds(Cu, Ag, and Ti)-added system had a certain extent of resistance against termite attack. As a result of photo stability test with ultraviolet(UV)light, the changes in color difference in the radial section of the composites irradiated with UV light were smaller than those of the untreated wood, particularly the smallest change for the titanium dioxide-added system, showing the enhancement of photo stability. The composites remained the photo proof even after leaching. The brightness in the cross section changed greatly in the boric acidand titanium dioxide-added system compared with the untreated wood. The Brinell hardness in the cross section showed an increase up to 70% compared with the untreated wood, and it increased with an increase in weight percent gain(WPG). This fardness held an increase up to 22% compared with the untreated wood even after leaching and the hardness in the radial section increased up to 30%, revealing little reduction of hardness in any case. The Taber type abrasion index in the tangential section tended to increase with an increase in WPG. This result showed the reduction of abrasion resistance.
社団法人日本材料学会の論文
1999-03-15

コロイダルシリカ溶液による木材無機質複合体の特性 : 耐蟻性, 耐光性, 硬さ, 耐摩耗性(<特集>木質材料)

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