NATURAL TANNIN-BASED RIGID FOAMS AS INSULATION FOR DOORS AND WALL PANELS
نویسندگان
چکیده
منابع مشابه
Natural Tannin-based Rigid Foams as Insulation for Doors and Wall Panels
Tannin-based rigid foams were shown to be good thermal insulating materials for use in the cavity of hollow-core wooden doors and other wooden cavities. Their thermal insulation capacity is comparable to that of totally synthetic, oil-derived foams, such as polyurethanes, but with the advantage that they do not burn and thus do not emit toxic gases on burning. Exposure to the weather of wooden ...
متن کاملChemical Modification of Tannin/furanic Rigid Foams by Isocyanates and Polyurethanes
Tannin/furanic rigid foams were modi ed by either polymeric 4,4’ diphenylmethane diisocyanate (pMDI) or a one-component polyurethane still presenting reactive isocyanate groups (PUR). Several di erent sequences of mixing the isocyanate and polyurethane with the chemicals used to prepare tannin-based foams were tested. Scanning electron microscopy (SEM) showed that addition of either pMDI or PUR...
متن کاملDesigning rigid carbon foams.
We use ab initio density functional calculations to study the stability, elastic properties and electronic structure of sp(2) carbon minimal surfaces with negative Gaussian curvature, called schwarzites. We focus on two systems with cubic unit cells containing 152 and 200 carbon atoms, which are metallic and very rigid. The porous schwarzite structure allows for efficient and reversible doping ...
متن کاملPalm kernel fruit fiber reinforced gypsum-cement based wall panels: It’s physical and mechanical characteristics
Agricultural waste fibers have been found to be suitable as reinforcement in cement-based composites, but studies on oil palm fiber as reinforcement in gypsum-cement wall panels are scarce. A mixture of two equal weights of gypsum and cement, with water-binder ratios of 0.45 and 0.55 were prepared. In each mix a varying percentage of fiber contents of 2%, 3% and 4% by weight of the binders were...
متن کاملEnergy - Efficient Biodegradable Foams for Structural Insulated Panels Curtis
Residential and commercial buildings are responsible for roughly 40 percent of U.S. energy consumption [1]. Within these types of buildings, space heating and cooling was responsible for roughly 36% of the energy consumption in 2005 [2]. Moreover, attributes of the building envelope have a large impact on this energy consumption, namely how much energy is needed to maintain comfortable room tem...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Maderas. Ciencia y tecnología
سال: 2008
ISSN: 0718-221X
DOI: 10.4067/s0718-221x2008000300005