Performance Evaluation of Modified Canola Flour Adhesive in Plywood Production
| Autor: | Mahsa Barzegar, Rabi Behrooz, Hamidreza Mansouri, Saeed Kazemi Najafi |
|---|---|
| Jazyk: | perština |
| Rok vydání: | 2018 |
| Předmět: |
Forestry SD1-669.5 Printmaking and engraving NE1-978 |
| Zdroj: | Iranian Journal of Wood and Paper Industries, Vol 8, Iss 4, Pp 631-643 (2018) |
| Druh dokumentu: | article |
| ISSN: | 2008-9066 2423-3242 |
| Popis: | The purpose of this study was to evaluate the performance of canola flour adhesive in plywood manufacturing. For this reason, first canola flour was modified with sodium hydroxide and urea/sodium hydroxide, separately. Then to create cross linking between protein molecules, different levels of pMDI (5, 15, and 30%) was added to slurry as based on dry weight of canola flour. The results of this study indicated that the dry shear strength of specimens was significantly increased compared to unmodified adhesive as the alkali and urea was added to canola flour adhesive. Also, more pMDI content in adhesives resulted more improvement this property. In this study, the dry shear strength of all modified canola adhesives was more than the En-314-2 standard. Also, chemical modification of canola adhesives caused improvement the water resistance so that in soaking/drying cycles, the behavior of some adhesives was close or similar to Urea formaldehyde. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
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