Ablation of elastomeric composites for rocket motor insulation

Youren, J.W.

doi:10.1016/0010-4361(71)90959-1

Cited by 36 publications

(43 citation statements)

References 1 publication

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“…Silicone showed to be a very effective matrix for EHSMs [17]: the main drawback of silicone is M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 3 Phenolics are used to increase the char yield [28], [30], [31]. Flame retardants can also be combined with the EPDM matrix [32]- [35].…”

Section: A N U S C R I P Tmentioning

confidence: 99%

“…A C C E P T E D ACCEPTED MANUSCRIPT 2 [2] and to provide insulation to Solid Rocket Motors (SRMs) [3]- [10]. Among the various matrices used for ablatives, even using a high char retention resin such as phenolic [11], the charred matrix is susceptible to erosion: to assist the char retention, a wide range of reinforcements can be added to the matrix thus to produce a Fiber Reinforced Polymeric Ablator (FRPA).…”

Section: A N U S C R I P Tmentioning

confidence: 99%

“…As an example, the structural case of a SRM, which serves as a pressure vessel for the combustion gases, must be protected against high temperature (in excess of 2800°C) and pressures (as high as 60 bar) [3]. An ablative liner made of Elastomeric Heat Shielding Materials (EHSMs) is placed between the SRM case made of metals or carbon/epoxy filament-wound composites [4], and the solid fuel grain [16].…”

Section: A N U S C R I P Tmentioning

confidence: 99%

See 2 more Smart Citations

EPDM based heat shielding materials for Solid Rocket Motors: A comparative study of different fibrous reinforcements

Natali

Rallini

Puglia

et al. 2013

Polymer Degradation and Stability

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Section: A N U S C R I P Tmentioning

confidence: 99%

Section: A N U S C R I P Tmentioning

confidence: 99%

Section: A N U S C R I P Tmentioning

confidence: 99%

See 1 more Smart Citation

EPDM based heat shielding materials for Solid Rocket Motors: A comparative study of different fibrous reinforcements

Natali

Rallini

Puglia

et al. 2013

Polymer Degradation and Stability

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“…Because of their chemical structures, the pyrolysis products of the PSA fiber and aramid fiber were mainly composed of aromatic compounds, which were deposited to form much char on the surface of the thermal insulator during ablation. 21,22 According to Foldi,23 the actual ablation of a thermal insulator mainly depends on the char layer on the surface of the insulator. The aromatic compounds produced by the PSA fiber and aramid fiber were about 62.36 and 66.07% in total area, respectively, and this indicated that the two kinds of fibers greatly contributed to the char formation on the surface of the composites.…”

Section: Resultsmentioning

confidence: 99%

Ablation and thermal properties of ethylene–propylene–diene elastomer composites reinforced with polysulfonamide short fibers

Jia

et al. 2009

J of Applied Polymer Sci

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Polysulfonamide (PSA) short fiber/ethylenepropylene-diene elastomer (EPDM) composites were prepared as high-performance thermal insulators. The pyrolysis products and thermal stabilities of the PSA fiber and aramid fiber were analyzed. The ablation and thermal properties of the PSA/EPDM composites were compared with those of the aramid/EPDM composites. The degradation peak temperature of the PSA fiber was 100 C higher than that of the aramid fiber. With the fiber content increasing, the ablation rates of both composites decreased up to 10 phr and subsequently increased, whereas the thermal conductivities of both composites increased linearly. In comparison with the aramid/EPDM composites, the ablation rate and thermal conductivity of the PSA/EPDM composites were lower, whereas the thermal degradation temperature and limiting oxygen index of the PSA/EPDM composites were higher. Dynamic mechanical thermal testing and morphology observations revealed that strong interfacial bonding between the fiber and the matrix was developed in the PSA/EPDM composites, and it was beneficial for improving the ablation properties of the composites.

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“…The curing characteristics, physical properties and aging behaviour of EPDM gum, filled vulcanizates and phenol-formaldehyde polycondensates have been investigated previously [1][2][3][4]. Degradation kinetics [4][5][6][7] and ablative properties of the insulators have also been studied [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

A thermal analysis investigation of new insulator compositions based on EPDM and phenolic resin

Uyarel

Pektaş

1996

Journal of Thermal Analysis

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New rocket insulator compositions have been studied by adding various types and amounts of fillers, such as graphite and asbestos fibres, A1203, MgZrO2, Cr203, SiC, carbon powders and phenolic resin to the base EPDM gum and graphite, kevlar, E type glass fibres to the base phenolic resin in order to improve thermal and ablative efficiency. The degradation of the insulators has been investigated by thermogravimetry (TG) analysis to 900~ and DSC analysis to 500~ Conversion curves of the insulators at different heating rates were performed and maximum degradation temperatures were found as 646 and 661~ for EPDM P and phenolic resin, respectively. The kinetic parameters for degradation have been evaluated and the lifetime of the rocket insulators has been estimated. Thermal analysis has been eonducted on the insulators and the indepth temperature distribution was evaluated in order to find optimum insulation thickness.

show abstract

Ablation of elastomeric composites for rocket motor insulation

Cited by 36 publications

References 1 publication

EPDM based heat shielding materials for Solid Rocket Motors: A comparative study of different fibrous reinforcements

EPDM based heat shielding materials for Solid Rocket Motors: A comparative study of different fibrous reinforcements

Ablation and thermal properties of ethylene–propylene–diene elastomer composites reinforced with polysulfonamide short fibers

A thermal analysis investigation of new insulator compositions based on EPDM and phenolic resin

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