Untersuchungen zur Optimierung von Holzfaserdämmstoffen in Abhängigkeit von Rohstoff, Herstellverfahren und Aufschlussbedingungen

Brombacher, Volker

doi:10.3929/ethz-a-010580551

Cited by 1 publication

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“…The thermal conductivity of the comparable GUTEX product (180 kg/m³, 40 mm) is 0.043 W/mK (GUTEX 2019a). After loosening, gluing and re-compacting to 180 kg/m³ and a thickness of 40 mm, a thermal conductivity between 0.043 and 0.044 W/mK was measurable, indicating that thermal conductivity is in particular dependent on the density and moisture content of the board and not on type of binding agent or board thickness (Foglia 2006;Sonderegger and Niemz 2009;Brombacher 2015).…”

Section: Physical-technological Properties Of Wfimentioning

confidence: 99%

Manufacturing medium-density fiberboards and wood fiber insulation boards using a blood albumin adhesive on a pilot scale

Ostendorf

Reuter

Euring

2020

BioRes

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An albumin adhesive derived from animal blood was used for the first time for the production of two kinds of fiberboard in a dry process: medium-density fiberboard (MDF) and wood fiber insulation board (WFI). Additionally, the curing for WFI was completed using an innovative hot-air/hot-steam (HA/HS) process. There is a general importance to develop alternatives to substitute common binding agents, such as urea-formaldehyde (UF) or polymeric methylene diphenylene diisocyanate (pMDI) resins, and to develop value-added opportunities for such waste material from slaughterhouses. An adhesive analysis was performed to understand the curing reaction of these protein adhesives, which showed good properties in regards to viscosity or gel time. The physical-mechanical results showed on the one hand that the albumin adhesive could compete with UF-bonded MDF regarding tensile strength and modulus of rupture in conformity to the European Standard, but it failed to meet requirements for thickness swelling. The albumin adhesive also can compete with pMDI bonded WFI regarding tensile and compression strength, but it showed non-viable results for short-term water absorption.

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Section: Physical-technological Properties Of Wfimentioning

confidence: 99%