Influence of Press Pressure on the Properties of Parallel Strand Lumber Glued with Urea Formaldehyde Adhesive

Küçük Resim Yok

Tarih

2013

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

North Carolina State Univ Dept Wood & Paper Sci

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Özet

The effects of press pressure on laboratory-made parallel strand lumbers (PSLs) that were manufactured from fast-growing rotary-peeled I-77/51 (Populus deltoides) hybrid poplar clones' veneer strands with a urea formaldehyde (UF) adhesive using press pressures ranging from 7.5 to 15 kg cm(-2) in increments of 2.5 kg cm(-2) were investigated. The physical and mechanical properties of PSL were affected by the press pressures. However, press pressures did not affect the combustion properties. Results indicated that higher press pressures lead to higher densification or compaction rates and specific gravities (SGs). For improved physical and mechanical properties, higher press pressures were found to be necessary. A press pressure of 12.5 kg cm(-2) was found to be the optimum press pressure in relation to PSL properties. There are positive correlations among SG and mechanical properties as well as press pressures. The results may provide valuable information to assess the behavior of structural composite lumbers, including PSLs, that are manufactured using low and high press pressures. Utilization of fast-growing tree species is possible because their strength properties are improved through pressing.

Açıklama

Anahtar Kelimeler

Parallel strand lumber (PSL), Urea formaldehyde (UF), Populus deltoides, Press pressure

Kaynak

Bioresources

WoS Q Değeri

Q1

Scopus Q Değeri

Q3

Cilt

8

Sayı

3

Künye