Some Technological Properties of Laminated Veneer Lumber Manufactured from Pine (Pinus sylvestris L.) Veneers with Melamine Added - UF Resins

Semra ÇOLAK; İsmail AYDIN; Cenk DEMİRKIR; Gürsel ÇOLAKOĞLU*

Makale detayları

Some Technological Properties of Laminated Veneer Lumber Manufactured from Pine (Pinus sylvestris L.) Veneers with Melamine Added - UF Resins

Yazarlar:

Semra ÇOLAK | İsmail AYDIN | Cenk DEMİRKIR | Gürsel ÇOLAKOĞLU*

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Agriculture and Forestry 2004 Vol.28 Issue 2, pp.109-113

Belge Tipi:

Makale

Yayın Tarihi:

1/2004

Belge Dili:

Türkçe

Document ID (Org No.):

2000809225

Sıklık:

İki Aylık

eISSN:

1303-6173

pISSN:

1300-011X

Anahtar kelimeler:

Özet:

 

The objectives of this study were to compare the modulus of elasticity, bending strength, shear strength and formaldehyde emissions of laminated veneer lumber (LVL) bonded with melamine added urea formaldehyde resin (UF+M) and produced with other resins such as urea-formaldehyde (UF), melamine-urea-formaldehyde (MUF) and phenol formaldehyde (PF), and to determine the effects of 2 different climate conditions on the bending strength and modulus of elasticity of pine LVL panels. After the panel production, the test specimens were divided into 2 groups for all tests. The first group of test specimens were conditioned at 20 °C and 45% R.H., while the rest of the samples were conditioned at 20 °C and 65% R.H for about 2 weeks prior to testing. According to the test results, the bending strength and modulus of elasticity values of the specimens conditioned at 20 °C and 45% R.H. were higher than those of the specimens conditioned under the other climate condition. The increases in those strength values determined for the specimens bonded with PF adhesive were more obvious than those of the specimens bonded with other adhesives. Formaldehyde emission values decreased and shear strength values increased with the addition of melamine to the glue mixture.

 

The objectives of this study were to compare the modulus of elasticity, bending strength, shear strength and formaldehyde emissions of laminated veneer lumber (LVL) bonded with melamine added urea formaldehyde resin (UF+M) and produced with other resins such as urea-formaldehyde (UF), melamine-urea-formaldehyde (MUF) and phenol formaldehyde (PF), and to determine the effects of 2 different climate conditions on the bending strength and modulus of elasticity of pine LVL panels. After the panel production, the test specimens were divided into 2 groups for all tests. The first group of test specimens were conditioned at 20 °C and 45% R.H., while the rest of the samples were conditioned at 20 °C and 65% R.H for about 2 weeks prior to testing. According to the test results, the bending strength and modulus of elasticity values of the specimens conditioned at 20 °C and 45% R.H. were higher than those of the specimens conditioned under the other climate condition. The increases in those strength values determined for the specimens bonded with PF adhesive were more obvious than those of the specimens bonded with other adhesives. Formaldehyde emission values decreased and shear strength values increased with the addition of melamine to the glue mixture.

Makale detayları

Some Technological Properties of Laminated Veneer Lumber Manufactured from Pine (Pinus sylvestris L.) Veneers with Melamine Added - UF Resins

Yazarlar:

Semra ÇOLAK | İsmail AYDIN | Cenk DEMİRKIR | Gürsel ÇOLAKOĞLU*

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Agriculture and Forestry 2004 Vol.28 Issue 2, pp.109-113

Belge Tipi:

Makale

Yayın Tarihi:

1/2004

Belge Dili:

Türkçe

Document ID (Org No.):

2000809225

Sıklık:

İki Aylık

eISSN:

1303-6173

pISSN:

1300-011X

LVL

resin type

climate condition

technological properties

formaldehyde emission

Sayı

Makale detayları

Some Technological Properties of Laminated Veneer Lumber Manufactured from Pine (Pinus sylvestris L.) Veneers with Melamine Added - UF Resins

Yazarlar: Semra ÇOLAK | İsmail AYDIN | Cenk DEMİRKIR | Gürsel ÇOLAKOĞLU*

Yayıncı: TUBITAK

Dergi: Turkish Journal of Agriculture and Forestry 2004 Vol.28 Issue 2, pp.109-113

Belge Tipi: Makale

Yayın Tarihi: 1/2004

Belge Dili: Türkçe

Document ID (Org No.): 2000809225

Sıklık: İki Aylık

eISSN: 1303-6173

pISSN: 1300-011X

LVL

resin type

climate condition

technological properties

formaldehyde emission

Sayı

Yazarlar:

Semra ÇOLAK | İsmail AYDIN | Cenk DEMİRKIR | Gürsel ÇOLAKOĞLU*

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Agriculture and Forestry 2004 Vol.28 Issue 2, pp.109-113

Belge Tipi:

Makale

Yayın Tarihi:

1/2004

Belge Dili:

Türkçe

Document ID (Org No.):

2000809225

Sıklık:

İki Aylık

eISSN:

1303-6173

pISSN:

1300-011X