SHEAR STRENGTH OF HEAT-TREATED TALI (ERYTHROPHLEUM IVORENSE) AND IROKO (CHLOROPHORA EXCELSA ) WOODS, BONDED WITH VARIOUS ADHESIVES
The aim of this study was to evaluate the effect of heat treatment on the shear strength of tali (Erythrophleum ivorense) and iroko (Chlorophora excelsa) woods, bonded with some structural adhesives. Shear strength of untreated and heat-treated woods bonded with phenol-formaldehyde (PF), melamine-ur...
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| Format: | Article |
| Language: | English |
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North Carolina State University
2009-11-01
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| Series: | BioResources |
| Subjects: | |
| Online Access: | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/viewFile/BioRes_04_4_1545_SahinKol_OA_Shear_Stress_Heat_Treat_Tali_Adhesives/456 |
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| author | Hamiyet Sahin Kol Günay Özbay Suat Altun |
| author_facet | Hamiyet Sahin Kol Günay Özbay Suat Altun |
| author_sort | Hamiyet Sahin Kol |
| collection | DOAJ |
| description | The aim of this study was to evaluate the effect of heat treatment on the shear strength of tali (Erythrophleum ivorense) and iroko (Chlorophora excelsa) woods, bonded with some structural adhesives. Shear strength of untreated and heat-treated woods bonded with phenol-formaldehyde (PF), melamine-urea-formaldehyde (MUF), melamine-formaldehyde (MF), and polyurethane (PUR) adhesives was studied. An industrial heat treatment method (ThermoWood) was used. The timbers were thermally modified for 2 hours at 180 ºC. Laminated samples having two sample sets were prepared from untreated and heat-treated wood for the shear strength test. The results of the tests showed that the heat treatment affected shear strength of laminated wood negatively. Although there was a considerable difference in adhesive bond shear strength between untreated and treated wood, both wood species bonded with the adhesives fulfilled the required value for shear strength of the adhesive bonds. PF, MUF, MF, and PUR adhesives performed in a rather similar way for both wood species. |
| first_indexed | 2024-12-10T18:56:17Z |
| format | Article |
| id | doaj.art-9d3aa2c1056442e78f51ce5f361d8ed1 |
| institution | Directory Open Access Journal |
| issn | 1930-2126 |
| language | English |
| last_indexed | 2024-12-10T18:56:17Z |
| publishDate | 2009-11-01 |
| publisher | North Carolina State University |
| record_format | Article |
| series | BioResources |
| spelling | doaj.art-9d3aa2c1056442e78f51ce5f361d8ed12022-12-22T01:37:09ZengNorth Carolina State UniversityBioResources1930-21262009-11-014415451554SHEAR STRENGTH OF HEAT-TREATED TALI (ERYTHROPHLEUM IVORENSE) AND IROKO (CHLOROPHORA EXCELSA ) WOODS, BONDED WITH VARIOUS ADHESIVESHamiyet Sahin KolGünay ÖzbaySuat AltunThe aim of this study was to evaluate the effect of heat treatment on the shear strength of tali (Erythrophleum ivorense) and iroko (Chlorophora excelsa) woods, bonded with some structural adhesives. Shear strength of untreated and heat-treated woods bonded with phenol-formaldehyde (PF), melamine-urea-formaldehyde (MUF), melamine-formaldehyde (MF), and polyurethane (PUR) adhesives was studied. An industrial heat treatment method (ThermoWood) was used. The timbers were thermally modified for 2 hours at 180 ºC. Laminated samples having two sample sets were prepared from untreated and heat-treated wood for the shear strength test. The results of the tests showed that the heat treatment affected shear strength of laminated wood negatively. Although there was a considerable difference in adhesive bond shear strength between untreated and treated wood, both wood species bonded with the adhesives fulfilled the required value for shear strength of the adhesive bonds. PF, MUF, MF, and PUR adhesives performed in a rather similar way for both wood species.http://ojs.cnr.ncsu.edu/index.php/BioRes/article/viewFile/BioRes_04_4_1545_SahinKol_OA_Shear_Stress_Heat_Treat_Tali_Adhesives/456Heat treatment of woodAdhesiveShear strengthPhenol-formaldehydeMelamine-urea-formaldehydeMelamine-formaldehydePolyurethane |
| spellingShingle | Hamiyet Sahin Kol Günay Özbay Suat Altun SHEAR STRENGTH OF HEAT-TREATED TALI (ERYTHROPHLEUM IVORENSE) AND IROKO (CHLOROPHORA EXCELSA ) WOODS, BONDED WITH VARIOUS ADHESIVES BioResources Heat treatment of wood Adhesive Shear strength Phenol-formaldehyde Melamine-urea-formaldehyde Melamine-formaldehyde Polyurethane |
| title | SHEAR STRENGTH OF HEAT-TREATED TALI (ERYTHROPHLEUM IVORENSE) AND IROKO (CHLOROPHORA EXCELSA ) WOODS, BONDED WITH VARIOUS ADHESIVES |
| title_full | SHEAR STRENGTH OF HEAT-TREATED TALI (ERYTHROPHLEUM IVORENSE) AND IROKO (CHLOROPHORA EXCELSA ) WOODS, BONDED WITH VARIOUS ADHESIVES |
| title_fullStr | SHEAR STRENGTH OF HEAT-TREATED TALI (ERYTHROPHLEUM IVORENSE) AND IROKO (CHLOROPHORA EXCELSA ) WOODS, BONDED WITH VARIOUS ADHESIVES |
| title_full_unstemmed | SHEAR STRENGTH OF HEAT-TREATED TALI (ERYTHROPHLEUM IVORENSE) AND IROKO (CHLOROPHORA EXCELSA ) WOODS, BONDED WITH VARIOUS ADHESIVES |
| title_short | SHEAR STRENGTH OF HEAT-TREATED TALI (ERYTHROPHLEUM IVORENSE) AND IROKO (CHLOROPHORA EXCELSA ) WOODS, BONDED WITH VARIOUS ADHESIVES |
| title_sort | shear strength of heat treated tali erythrophleum ivorense and iroko chlorophora excelsa woods bonded with various adhesives |
| topic | Heat treatment of wood Adhesive Shear strength Phenol-formaldehyde Melamine-urea-formaldehyde Melamine-formaldehyde Polyurethane |
| url | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/viewFile/BioRes_04_4_1545_SahinKol_OA_Shear_Stress_Heat_Treat_Tali_Adhesives/456 |
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