Expanded perlite/cork fillers applied to aerospace insulation materials

被引：8
|
作者：
Pinto, Juliano R. A. [1 ,2 ]
Sanches, Natalia B. [3 ]
Diniz, Milton F. [4 ]
Santos, Regis S. [2 ]
De Oliveira, Jose I. S. [1 ,2 ]
Dutra, Rita De Cassia L. [1 ]
机构：
[1] ITA, Dept Quim, Ave Marechal Ar Eduardo Gomes 50, BR-12228900 Sao Jose Dos Campos, SP, Brazil
[2] APM, Div Prod Motores, Estr Municipal Lucia Marcondes & Machado Penedo S, BR-12315020 Jacarei, SP, Brazil
[3] UNISANTANNA, Ctr Univ St Anna, Rua Voluntarios da Patria 257, BR-02011000 Santana, SP, Brazil
[4] IAE, Div Quim, Ave Marechal do Ar Eduardo Gomes 50, BR-12228904 Sao Jose Dos Campos, SP, Brazil
来源：
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS | 2018年 / 90卷 / 03期
关键词：
asbestos replacement; cork; HTPB; insulation; perlite; PARTICLES; CORK; BEHAVIOR; RESIN;
D O I：
10.1590/0001-3765201820170964
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Insulations for rocket motors such as Flexible Thermal Protections (FTPs) and Rigid Thermal Protection (RTPs) act as thermal barriers against the hyperthermal environment from the solid propellant combustion. FTPs present dual function: to extend RTPs performance, and to attenuate the propellant contraction. FTPs used in the Brazilian Space Program have asbestos in their composition since the 70's; however, they are hazardous for human health. In this context, a mixture of Expanded Perlite (PExp) and Cork Powder (CP) was investigated as a replacement for asbestos. Results showed reduction about 21 % in density and an increase of 13 % in the ablative properties. The low mechanical properties not interfere in this type of FTP due to your function of attenuate the propellant contraction.
引用
收藏
页码：3197 / 3206
页数：10
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