Investigation of Thermal Conductivity of Wood Sandwich Panels with Aluminium and Polypropylene Core

Yıl 2019, , 647 - 650, 31.12.2019

Mustafa Aslan , Hasan Öztürk , Cenk Demirkır

https://doi.org/10.35229/jaes.640624

Cited By: 1

Öz

Sandwich panels are
obtained by placing thick but rather light core material between two thin and
rigid lower and upper surface layers. Sandwich panels, especially due to their
light weight, high "strength / weight" ratio and durability compared
to conventional materials have many use areas such as aviation and space
industry, maritime, automotive and building industry. It is one of the biggest
advantages that sandwich materials can be obtained from different materials and
geometric structures by choosing the lower and upper surface layers and the
core for various applications. The aim of this study is to investigate the
thermal conductivity values of the sandwich panels, which are manufactured with
different types of surface and core materials in sandwich panels. An aluminium
and polypropylene as a core materials and alder, birch and scots pine wood
veneers were used as wood species for surface panels for manufacturing of
sandwich panels. A polyurethane modified epoxy- adhesive were used for binding
of core layer to both surface layers. Thermal conductivity of sandwich panels
was determined according to ASTM C 518 & ISO 8301. As a result of the
study, the highest thermal conductivity values were obtained from aluminium
core sandwich panels. The highest values were obtained from alder for the
aluminium core panels and scots pine for the polypropylene core panels as wood
species.

Anahtar Kelimeler

Aluminium, Core, Polypropylene, Sandwich Panel, Thermal Conductivity

Investigation of Thermal Conductivity of Wood Sandwich Panels with Aluminium and Polypropylene Core

Öz

Sandviç
paneller, iki ince ve sert alt ve üst yüzey tabakasının arasına kalın fakat
hafif çekirdek malzeme yerleştirilerek elde edilir. Sandviç paneller, özellikle
hafiflikleri, yüksek "kuvvet / ağırlık" oranları ve geleneksel
malzemelere göre dayanıklılıkları nedeniyle havacılık ve uzay endüstrisi,
denizcilik, otomotiv ve inşaat endüstrisi gibi birçok kullanım alanına
sahiptir. Sandviç malzemelerin, farklı uygulamalar için alt ve üst yüzey
katmanları ve çekirdeği seçilerek farklı malzemelerden ve geometrik yapılardan
elde edilebileceği, en büyük avantajlardan biridir. Bu çalışmanın amacı, farklı
yüzey ve çekirdek malzemeleri ile üretilen sandviç panellerin ısıl iletkenlik
değerlerini araştırmaktır. Çekirdek malzeme olarak, alüminyum ve polipropilen;
kızılağaç, huş ve sarıçam kaplamaları, sandviç panellerin üretiminde yüzey
panelleri olarak kullanılmıştır. Çekirdek tabakanın her iki yüzey tabakasına yapışması
için poliüretan ile modifiye edilmiş bir epoksi yapıştırıcı kullanılmıştır.
Sandviç panellerin ısıl
iletkenliği ASTM C 518 ve ISO 8301'e göre belirlenmiştir. Çalışma sonucunda, en
yüksek ısıl iletkenlik değerleri, alüminyum çekirdekli sandviç panellerinden
elde edilmiştir. Alüminyum çekirdekli paneller için kızılağaçtan en yüksek
değerler elde edilmiş ve polipropilen çekirdekli paneller için çam ağacından
elde edilmiştir.

Anahtar Kelimeler

Alüminyum, Çekirdek, Isıl İletkenlik, Sandviç Panel, Polipropilen

Kaynakça

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