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Didecyl Dimethyl Ammonium Tetrafluoroborate (DBF) ve Didecyl Dimethyl Ammonium Chloride (DDAC) ile Emprenye Edilmiş Kontrplaklar: Mekanik Özellikler ve Biyolojik Direnç

Plywood Treated with Didecyl Dimethyl Ammonium Tetrafluoroborate (DBF) and Didecyl Dimethyl Ammonium Chloride (DDAC): Mechanical Properties and Biological Resistance

Journal Name:

  • İstanbul Üniversitesi Orman Fakültesi Dergisi

Publication Year:

  • 2008

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
This study evaluated decay and termite resistance of plywood panels treated with didecyl dimethyl ammonium tetrafluoroborate (DBF) and didecyl dimethyl ammonium chloride (DDAC) as quaternary ammonia compounds. Mechanical properties and bonding quality of treated plywood specimens were also tested. The modulus of rupture (MOR) values of both DBF- and DDAC-treated plywood specimens fulfilled minimum requirements for plywood F25-F30 (38-45 N/mmJ) set by the EN standards. The modulus of elasticity (MOE) of DDAC-treated plywood specimens decreased when compared with DBF-treated and untreated plywood specimens. The bonding quality values of all specimens did not meet the requirements set by the TS standards. The results suggest that DBF and DDAC may decrease mechanical properties by possible interaction with the glue and wood components depending on both chemical structure and retention levels in treated plywood specimens. Decay resistance tests showed that DBF-treated plywood specimens were more resistant against the fungi tested when compared with those of DDAC treated; however, both DBF and DDAC had no protective effect against termite attack.
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Abstract (Original Language): 
Bu çalışma didecyl dimethyl ammonium tetrafluoroborate (DBF) ve didecyl dimethyl ammonium chloride (DDAC) ile emprenye edilmiş kontrplak levhaların mekanik özellikleri ile mantar ve termitlere karşı dayanıklılığını incelemektedir. Levha örneklerinin yarılma dirençlerinin (MOR) EN standardları tarafından belirlenen F25-F30 (38-45 N/mm2) limitlerden düşük olmadığı fakat elastikiyet modülü (MOE) değerlerinin DDAC ile emprenye edilen örneklerde DBF ye kontrol levhalarına karşılık azaldığı belirlenmiştir. Yapışma direnci değerlerinin ise TS standardları tarafından belirlenen limit değerlerinden düşük olduğu bulunmuştur. Böylece DBF ve DDAC emprenye maddelerinin, tutkal ve odun komponentleri arasında olası etkileşimlerden dolayı mekanik özellikleri olumsuz etkileyeceği belirlenmiştir. Ayrıca, DBF ile emprenye edilen levhaların DDAC ile korunanlara karşılık test edilen mantarlara karşı daha dayanıklı olduğu fakat her iki maddenin de termitlere karşı levhaları koruyamayacağı bulunmuştur.
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  • 1
37-50
  • Turkish

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