Rigid foam polyurethane (PU) derived from castor oil (Ricinus communis) for thermal insulation in roof systems
نویسندگان
چکیده
منابع مشابه
Biodegradation of Polyurethane Derived from Castor Oil
The aim of this research was to study the biodegradation of a polymer derived from castor oil, which is a renewable, natural material that is a practical alternative for the replacement of traditional polyurethane foams. Due to its molecular structure, which contains polyester segments derived from vegetable oil, the polymeric surface is susceptible to microorganism attack. This study tested th...
متن کاملPolyurethane Foams for Thermal Insulation Uses Produced from Castor Oil and Crude Glycerol Biopolyols.
Rigid polyurethane foams were synthesized using a renewable polyol from the simple physical mixture of castor oil and crude glycerol. The effect of the catalyst (DBTDL) content and blowing agents in the foams' properties were evaluated. The use of physical blowing agents (cyclopentane and n-pentane) allowed foams with smaller cells to be obtained in comparison with the foams produced with a che...
متن کاملBone Regeneration after Demineralized Bone Matrix and Castor Oil (ricinus Communis) Polyurethane Implantation
Innocuous biocompatible materials have been searched to repair or reconstruct bone defects. Their goal is to restore the function of live or dead tissues. This study compared connective tissue and bone reaction when exposed to demineralized bovine bone matrix and a polyurethane resin derived from castor bean (Ricinus communis). Forty-five rats were assigned to 3 groups of 15 animals (control, b...
متن کاملExtraction and Characterization of Castor Seed Oil from Wild Ricinus Communis Linn
Castor oil was extracted by mechanical cold pressing (< 45 0 C) of the seeds of wild castor plant (Ricinus communis L.) found in wet marginal lands of Katsina, Nigeria. Oil yield was 39.43%. The virgin oil (obtained as clear, viscous, pale-yellow liquid) was further purified by filtration through sintered glass (fine mesh screen). This was to eliminate any dust, gum, or other particulates prese...
متن کاملPolyol from castor oil and epoxy resin for PU Coatings
Novel reactive polyols were synthesized via modification of castor oil, a renewable agricultural raw material with epoxy resin and triethylamine as a catalyst. This polyol was used for synthesis of polyurethane coating. Coating formulations were developed by reacting polyol with aromatic adduct, aliphatic adduct and castor oil based adduct in different NCO/OH ratio. All coating composition syst...
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ژورنال
عنوان ژورنال: Frontiers of Architectural Research
سال: 2012
ISSN: 2095-2635
DOI: 10.1016/j.foar.2012.09.005