Impact of pore structure on the thermal conductivity of glass foams

Publikation: Bidrag til tidsskriftLetterpeer review

19 Citationer (Scopus)
12 Downloads (Pure)


The thermal conductivity (λ) of glass foams is thought to depend on pore size. We report on the impact of pore size, determined using X-ray microtomography, and percentage porosity on the λ of glass foams. Glass foams were prepared by heating powder mixtures of obsolete cathode ray tube (CRT) panel glass, Mn 3O 4 and carbon as foaming agents, and K 3PO 4 as additive, to a suitable temperature above T g, and subsequent cooling. Here, we report for the first time a correlation between λ and pore size in the range 0.10–0.16 mm showing a decrease from 57 to 49 mW m −1 K −1 with increasing the pore size for glass foams with porosities of 87–90%. This indicates that the pore structure should be optimized in order to improve the insulating performance of glass foams.

TidsskriftMaterials Letters
Sider (fra-til)72-74
Antal sider3
StatusUdgivet - 1 sep. 2019


Dyk ned i forskningsemnerne om 'Impact of pore structure on the thermal conductivity of glass foams'. Sammen danner de et unikt fingeraftryk.