INFLUENCE OF ALUMINA ADDITION ON THE MECHANICAL PROPERTIES OF WINDOW GLASSES FOAMED WITH SODIUM SILICATE

Öz

In this study, the effect of alumina addition (1-40 wt. %) on the mechanical properties of window glass with 30 wt. % sodium silicate was investigated. Semi-wet mixtures were prepared and shaped and heated in the oven chamber at 800°C for 30 minutes. The microstructures of the glass foam material, densities, phase structures and mechanical strength were determined. Glass foam has a closed pore structure reduced by the amount of alumina addition (pore sizes: 0.5-1 mm) and the mechanical strength was increased up to 10.2 MPa. The foaming rate of the material is almost stayed stable up to 20% alumina incorporation. When the alumina content is 20% ​​by weight, the mechanical strength of the sample is 7.1 MPa, the product has the density of 0.53 g/cm³, water absorption rate is about 1.4%. The high mechanical strength and adequate porosity (79.45%) of this product makes the material as potential to use in the building sector.

Anahtar Kelimeler

• Foam glass,Alumina,Addition,Mechanical properties

SODYUM SİLİKAT İLE KÖPÜKLEŞTİRİLMİŞ PENCERE CAMLARINDA ALÜMİNA KATKISININ MİKROYAPIYA ETKİSİ

Öz

Bu çalışmada, sodyum silikat (ağırlıkça %30 oranında) kullanılarak köpükleştirilen pencere camlarına ağırlıkça %1-40 oranında alümina ilavesinin mikroyapıya etkisi araştırılmıştır. Yarı yaş şekillendirilen karışımlar 800°C de 30 dakika süre ile kamara fırında sinterlenmiştir. Cam köpük malzemelerin mikroyapıları, yoğunlukları, faz yapıları ve mekanik özellikleri belirlenmiştir. Cam köpükler kapalı gözenek yapısına sahip olup gözenek boyutları alümina katkı miktarına bağlı olarak düşmekte (0.5-1 mm) ve malzemenin mekanik mukavemeti 10.2 MPa değerine kadar artmaktadır. Malzemedeki köpükleşme oranı %20 alümina katkı miktarına kadar büyük oranda aynı kalmaktadır. Alümina katkısı ağırlıkça %20 olan numunelerde mekanik dayanım 7.1 MPa, ürünün yoğunluğu 0.53 gr/cm³, su emme oranı %1.4 değerindedir. Yüksek mekanik dayanımı ve yeterli gözenekliliği ile (% 79.45) bu ürün yapı sektörü için potansiyeldir.

Anahtar Kelimeler

• Cam köpük,Alümina,Katkı,Mekanik özellikler

Kaynakça

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