Leaching properties of wood treated with copper and boron compounds combined with water repellents

Öz

In this study, leaching performances of ammonium copper quat (ACQ) and boric acid (BA) chemicals, which are highly used in wood protection industry, were studied. Micronized copper quat (MCQ) and Nano boron (NB) were used as reference materials to ACQ and BA preservatives. Scots pine (Pinus sylvestris L.) wood samples were impregnated according to the full cell method with ACQ at 2,4 % concentration, BA at 4% concentration and MCQ and NB at 1% concentration levels. ACQ and BA impregnated samples were then, impregnated for a second time using 5 different water-repellent materials (tall oil, linseed oil, sodium silicate, methyl hydrogen silicone, N'-N-(1, 8-Naphthalyl) hydroxylamine). Polyethylene glycol 600 and aluminium sulphate were administered in the form of single impregnation by making a homogeneous mixture with ACQ and BA. In variotions made using ACQ, BA and water repellent materials, all variations except ACQ+MHS were failed to prevent copper and boron leaching. In samples impregnated with ACQ+MHS, only 3 % copper leaching was obtained. In addition, the copper leaching in samples impregnated with ACQ were lower compared to copper leaching in samples impregnated with MCQ. It was found that samples impregnated with NB showed high resistance towards to leaching. According to the results of leaching test, the non-leached boron amount in samples impregnated with NB was 42.88 %.

Anahtar Kelimeler

• Alkaline copper quat (ACQ),Boric acid (BA),Micronized copper quat (MCQ),Nano boron (NB),leaching test

Su itici maddeler ile kombine edilmiş bakırlı ve borlu bileşiklerin yıkanma özellikleri

Öz

Bu çalışmada, odun koruma endüstrisinde yoğun olarak kullanılan alkali/bakır/kuat (ACQ) ve borik asit (BA) emprenye maddelerinin yıkanma performansları araştırılmıştır. ACQ ve BA maddelerine referans madde olarak mikronize bakır kuat (MCQ) ve nano bor (NB) eklenmiştir. Sarıçam (Pinus sylvestris L.) odun örnekleri; %2,4 konsantrasyonda ACQ, %4 konsantrasyonda BA ve %1 konsantrasyonda MCQ ve NB ile dolu hücre yöntemine göre emprenye edilmişlerdir. ACQ ve BA ile emprenyeli örnekler, 5 farklı su itici madde (Tall yağı, Keten yağı, Sodyum silikat, Metil hidrojen silikon, N'-N- (1, 8-Naphthalyl) hidroksilamin) ile ikinci emprenye işlemine tabi tutulmuşlardır. Polietilen glikol 600 ve Alüminyum sülfat maddeleri ise ACQ ve BA ile homojen karışım oluşturularak tek emprenye şeklinde uygulanmışlardır. Elde edilen sonuçlara göre; ACQ, BA ve su itici maddeler ile oluşturulan varyasyonlarda, ACQ+MHS hariç, diğer varyasyonlarda yüksek oranda bakır ve bor yıkanmasına elde edilmiştir. ACQ+MHS ile emprenyeli örneklerde sadece %3 oranında bakır yıkanması gerçekleşmiştir. Ayrıca ACQ ile emprenyeli örneklerdeki bakır yıkanması, MCQ ile emprenyeli örneklerdeki bakır yıkanmasından daha düşük bulunmuştur. NB ile emprenyeli örneklerin yıkanmaya karşı yüksek direnç gösterdiği yapılan çalışmada ortaya konmuştur. Yıkanma testi sonuçlarına göre NB ile emprenyeli örneklerde yıkanmayan bor miktarı % 42,88 olarak elde edilmiştir.

Anahtar Kelimeler

• Alkali bakır kuat (ACQ),Borik asit (BA),Mikronize bakır kuat (MCQ),Nano bor (NB),Yıkanma testi

Kaynakça

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