Effects of nano-silver impregnation on some mechanical properties of ice-blasted wood specimens

Taghiyari H. R., . and Rassam G., . and Lotfinejad Sani Y., . and Karimi A., . Effects of nano-silver impregnation on some mechanical properties of ice-blasted wood specimens. pp. 83-88. ISSN 0128-1283

Ice blasting (frozen CO2 -78.5 C) is one of the modern methods of cleaning for industrial purposes. Effects of ice blasting were studied on untreated solid wood as well as 200 ppm nano-silver impregnated wood of Populus nigra (poplar) and Fagus orientalis (beech). Modulus of rupture (MOR) modulus of elasticity (MOE) and compression strength parallel to the grain were measured. Ice blasting decreased MOR by 31.5 and 6 in poplar and beech respectively. However when specimens were impregnated with nano-silver MOR would only decrease by 4.8 in beech and increase by 1.7 in poplar. Ice blasting decreased MOE and compression strength parallel to the grain by 62.5 and 2.5 respectively in poplar and 8.6 and 4.4 in beech. The lower the density of a wood the more mechanical properties would decrease in untreated wood as a result of ice blasting. On the other hand nano-silver impregnation decreased the amount of losses in MOR MOE and compression strength parallel to the grain. Heat conductivity of nano-silver particles transferred the cold accumulated on the surface layers of specimens. Consequently mechanical properties would be improved by preventing the formation of microscopic fissures and surface checks.

Full text available from: Official URL: http://www.frim.gov.my/v1/JTFSOnline/jtfs/v24n1/83...

Abstract

Ice blasting (frozen CO2 -78.5 C) is one of the modern methods of cleaning for industrial purposes. Effects of ice blasting were studied on untreated solid wood as well as 200 ppm nano-silver impregnated wood of Populus nigra (poplar) and Fagus orientalis (beech). Modulus of rupture (MOR) modulus of elasticity (MOE) and compression strength parallel to the grain were measured. Ice blasting decreased MOR by 31.5 and 6 in poplar and beech respectively. However when specimens were impregnated with nano-silver MOR would only decrease by 4.8 in beech and increase by 1.7 in poplar. Ice blasting decreased MOE and compression strength parallel to the grain by 62.5 and 2.5 respectively in poplar and 8.6 and 4.4 in beech. The lower the density of a wood the more mechanical properties would decrease in untreated wood as a result of ice blasting. On the other hand nano-silver impregnation decreased the amount of losses in MOR MOE and compression strength parallel to the grain. Heat conductivity of nano-silver particles transferred the cold accumulated on the surface layers of specimens. Consequently mechanical properties would be improved by preventing the formation of microscopic fissures and surface checks.

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Item Type:	Article
AGROVOC Term:	Mechanical properties
AGROVOC Term:	Wood
AGROVOC Term:	Metals
AGROVOC Term:	Populus nigra
AGROVOC Term:	Fagus orientalis
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:26
URI:	http://webagris.upm.edu.my/id/eprint/21236

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