| Journal: | Quimica nova |
| Database: | PERIÓDICA |
| System number: | 000199204 |
| ISSN: | 0100-4042 |
| Authors: | Paterlini, Willian Cesar1 Botelho, Edson Cocchieri Rezende, Luis Claudio Lourenco, Vera Lucia Rezende, Mirabel Cerqueira |
| Institutions: | 1Universidade Estadual Paulista "Julio de Mesquita Filho", Instituto de Quimica, Araraquara, Sao Paulo. Brasil 2Centro Tecnico Aeroespacial, Instituto Tecnologico de Aeronautica, Sao Jose dos Campos, Sao Paulo. Brasil 3Centro Tecnico Aeroespacial, Instituto de Aeronautica e Espaco, Sao Jose dos Campos, Sao Paulo. Brasil |
| Year: | 2002 |
| Season: | Mar-Abr |
| Volumen: | 25 |
| Number: | 2 |
| Pages: | 221-225 |
| Country: | Brasil |
| Language: | Portugués |
| Document type: | Artículo |
| Approach: | Experimental |
| English abstract | The reaction between hydroxy-terminated polybutadiene and isophorone diisocyanate constitutes the base of the curing process of the most composite solid propellant used in the propulsion of solid rocket propellant. In this work, differential scanning calorimetry and viscosity measurements were used to evaluate the effect of the ferric acetylacetonate catalyst concentration on the reaction between HTBR and IPDI. These analyses show one exotherm, which shifts to lower temperatures as the catalyst concentration increases. The viscosity analyses show that the increase of temperature causes, at first, a reduction in the mixture viscosity, reaching a minimum range called gelification region (increasing the crosslinking density) |
| Disciplines: | Química, Ingeniería |
| Keyword: | Fisicoquímica y química teórica, Química organometálica, Ingeniería mecánica, Catalizadores, Acetilacetonato férrico, Motores, Poliuretano, Polibutadieno |
| Keyword: | Chemistry, Engineering, Organometallic chemistry, Physical and theoretical chemistry, Mechanical engineering, Catalysts, Ferric acetylacetonate, Motors, Polyurethane, Polybutadiene |
| Full text: | Texto completo (Ver HTML) |
