Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Aparecida M. Kawamoto"'
Autor:
Aparecida M. Kawamoto, Luiz Cláudio Pardini, Milton Faria Diniz, Vera Lúcia Lourenço, Marta Ferreira K. Takahashi
Publikováno v:
Journal of Aerospace Technology and Management, Vol 2, Iss 2, Pp 169-182 (2010)
Phenolic resin has long been used as matrix for composites mainly because of its flame retardant behavior and high char yield after pyrolysis, which results in a self supporting structure. The addition of ceramic powders, such as SiC and B4C, as fill
Externí odkaz:
https://doaj.org/article/f8d67b601c344ba1b053155af8c264ae
Publikováno v:
Journal of Aerospace Technology and Management, Vol 1, Iss 2, Pp 153-160 (2009)
The search for a smokeless propellant has encouraged scientists and engineers to look for a chlorine-free oxidizer as a substitute for AP (ammonium perchlorate). Endeavors seemed to come to an end when ADN (ammonium dinitramide) appeared in the West
Externí odkaz:
https://doaj.org/article/1d8a590d4d404acbbecf43e9f4e7b7f3
Autor:
Aparecida M. Kawamoto, José Irineu S.Oliveira, Rita de Cássia L. Dutra, Luis Claudio Rezende, Thomas Keicher, Horst Krause
Publikováno v:
Journal of Aerospace Technology and Management, Vol 1, Iss 1, Pp 35-42 (2009)
Synthesis and characterization of energetic ABA-type thermoplastic elastomers for propellant formulations has been carried out. Following the working plan elaborated, the synthesis and characterization of Poly 3- bromomethyl-3-methyl oxetane (PolyBrM
Externí odkaz:
https://doaj.org/article/0b4b371e388847bfae9fda5c8aafa833
Autor:
Darci Cortes Pires, Aparecida M. Kawamoto, Jairo Sciamareli, Elizabeth C. Mattos, Milton F. Diniz, Rita de Cássia L. Dutra, Koshun Iha
Publikováno v:
Journal of Aerospace Technology and Management, Vol 1, Iss 1, Pp 55-61 (2009)
A new method using wet chemistry and instrumental analysis has been developed for evaluating the ring-opening of aziridine tris [1-(2 methyl) aziridinyl] phosphide oxide (MAPO) of the bonding agent used in composite propellant. A reduction was observ
Externí odkaz:
https://doaj.org/article/227f7987a0974902b4b0baadbd0b1b39
Publikováno v:
Polímeros, Vol 17, Iss 3, Pp 180-187 (2007)
No presente trabalho duas técnicas de manufatura de compósitos termoplásticos estruturais são investigadas: a de moldagem por compressão a quente convencional e a de pré-impregnação via suspensão polimérica. A primeira consiste na impregna
Externí odkaz:
https://doaj.org/article/de586e1d03d44fa5ab866e716f159423
Autor:
José Irineu S. de Oliveira, Milton F. Diniz, Aparecida M. Kawamoto, Rita C. L. Dutra, Thomas Keicher
Publikováno v:
Polímeros, Vol 17, Iss 1, Pp 46-50 (2007)
Azide polymers samples were analyzed by FT-MIR in order to develop a quantitative methodology to determine the C, H and N content in energetic polymers used in propellants. The elemental analysis data were used as reference. The FT-MIR results show a
Externí odkaz:
https://doaj.org/article/d72dff0d91c7413a9d44052204804dd8
Autor:
Vera L. Lourenço, Aparecida M. Kawamoto, Jairo Sciamareli, Luis C. Rezende, Darci C. Pires, Marta F. K. Takahashi, Agda V. Berdugo, Sandra M. Cruz, Rita C.L. Dutra, Bluma G. Soares
Publikováno v:
Polímeros, Vol 16, Iss 1, Pp 66-70 (2006)
Um método SEC com dupla detecção para determinação de distribuição de funcionalidade de resina polibutadiênica hidroxilada HTPB foi desenvolvido, verificando-se a influência desse parâmetro no comportamento mecânico de poliuretano utilizad
Externí odkaz:
https://doaj.org/article/757795b895ad4d4486c6a9229535002c
Autor:
Liliana B. Nohara, Aparecida M. Kawamoto, Marta F. K. Takahashi, Martin Wills, Evandro L. Nohara, Mirabel C. Rezende
Publikováno v:
Polímeros, Vol 14, Iss 2, Pp 122-128 (2004)
O objetivo do presente trabalho é apresentar a síntese de um poli (ácido âmico) (PAA) a ser utilizado como formador de interfase no processamento de compósitos termoplásticos de alto desempenho. Os materiais compósitos termoplásticos constitu
Externí odkaz:
https://doaj.org/article/e39b9aa96bfa4a8abc109c0c20e55f68
Autor:
Aparecida M. Kawamoto, Martin Wills
Publikováno v:
Química Nova, Vol 25, Iss 6a, Pp 921-925 (2002)
A rapid, expedient and enantioselective method for the synthesis of beta-hydroxy amines and monosubstituted aziridines in up to 99% e.e., via asymmetric transfer hydrogenation of a-amino ketones and cyclisation through treatment with tosyl chloride a
Externí odkaz:
https://doaj.org/article/3dfc6268a0134c2f94b26e97b0f79705
Autor:
Aparecida M. Kawamoto, Luiz Cláudio Pardini, Milton Faria Diniz, Vera Lúcia Lourenço, Marta Ferreira K. Takahashi
Publikováno v:
Journal of Aerospace Technology and Management, Vol 2, Iss 2 (2011)
Phenolic resin has long been used as matrix for composites mainly because of its flame retardant behavior and high char yield after pyrolysis, which results in a self supporting structure. The addition of ceramic powders, such as SiC and B4C, as fill
Externí odkaz:
https://doaj.org/article/4f7d196477a84f008aeccff416ead3d1