| 1. |
- Birbilis, Dimitrios, et al.
(författare)
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Properties of black pine (Pinus nigra Arn.) wood treated with hot rape oil
- 2014
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Ingår i: Wood Structure, Properties and Quality – 2014. - : Moscow State University Press. - 9785813506253 ; , s. 30-34
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Konferensbidrag (refereegranskat)abstract
- The objective of this study was to examine oil-retention, swelling, adsorption, static bending properties and tensile strength of lap joints of black pine (Pinus nigra Arn.) wood treated with hot rape oil. Wood specimens were impregnated in a steel vessel using the empty cell process (Lowry method). Rape oil retention of black pine specimens ranged between 122 and 193 kg/m3. Total swelling of specimens was not affected by the impregnation but the rate of swelling was decreased. The impregnated specimens had an adsorption of 21%, while the untreated 75%. The oil heat-treatment process was found to affect the tensile strength of lap joints. The impregnated specimens showed a lower tensile strength of about 10% than the un-treated. The treatment did not affect the static bending strength of black pine wood as deter-mined by the modulus of rupture (MOR) values. However, wood elasticity was affected with impregnated specimens showing higher modulus of elasticity (MOE) values than the untreated.
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| 2. |
- Birbilis, Dimitrios, et al.
(författare)
-
Properties of pine (Pinus nigra) and beech (Fagus sylvatica) wood impregnated with hot rape oil and surface treated with turpentine
- 2014
-
Ingår i: New Materials and Technologies in the Function of Wooden Products. - : Faculty of Forestry. - 9789532920345 ; , s. 1-6
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Konferensbidrag (refereegranskat)abstract
- The objective of this study was to examine oil-retention, adsorption, swelling and tensile strength of lap joints of wood treated with hot rape oil. Wood specimens of two species (Fagus sylvatika and Pinus nigra) were impregnated in a steel vessel using the empty cell process (Lowry method). Several impregnated specimens were additionally surface treated with turpentine. Rape oil retention ranged between 124 and 189 kg/m3 for pine wood specimens and between 187 and 285 kg/m3 for beech wood specimens. For both species, the impregnated specimens had an adsorption of about 20%, while the untreated near 60%. Total swelling of specimens was not affected by the impregnation but the rate of swelling was decreased. The impregnated specimens had a little lower tensile strength mostly when glued with polyurethane (PU). Surface treatment with turpentine slightly improved tensile strength of lap joints.
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