Thermal and ablative properties of rocket insulator compound based on EPDM

Deuri, A. S.; Bhowmick, Anil K.; Ghosh, Ratna; John, B.; Sriram, T. S.; De, S. K.

doi:10.1016/0141-3910(88)90062-6

Cited by 60 publications

(23 citation statements)

References 3 publications

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“…Glass fibers have also been reported to improve the ablative resistance of EPDM based EHSMs [49]: however, the testing of high silica content fibers which, in light of their superior ablation resistance than traditional E-Glass fibers are traditionally used on FRPAs [50], was not reported in a dedicated study on EPDM based EHSMs. Accordingly, the aim of our research was to investigate the role of silica and Kynol fibers on the ablation response of EPDM based EHSMs and, at the same time, to directly compare these fiber with Aramid.…”

Section: A N U S C R I P Tmentioning

confidence: 99%

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%

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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“…The degradation of natural rubber segments is sensitive to the presence of an oxidized structure, as well as the depletion of sulphidic cross-linking in the natural rubber. The latter degradation, which can be observed from the DTG curve's small peak area, was attributed to the scission of crosslinked R-EPDM and conjugated polyene remaining after the first stage of degradation [21] .…”

Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 98%

Thermo-Mechanical Performance of Natural Rubber/Recycled Ethylene-Propylene-Diene Rubber Blends in the Presence of ZnO Nanoparticles

Hayeemasae

Ismail

2015

International Journal of Polymer Analysis and Characterization

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In the present study, recycled ethylene-propylene-diene rubber (R-EPDM) was used in an attempt to create a value added natural rubber (NR) material based on NR/R-EPDM blends. ZnO nanoparticles were also incorporated in a way to replace the conventional ZnO together with a special attention to improve the thermo-mechanical performance of the blends. Polyhedral and spherical shapes of ZnO nanoparticles were synthesised and it was found to have no impurities with a dimension ranging from 10 -40 nm. ZnO nanoparticles not only act as a curing activator but also improve the thermal stability and dynamic mechanical properties of the blends.

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“…Along with that various additives such as fillers, plasticizers, activators, accelerators, curatives, antioxidants, tackifiers, and flame retardants are involved in a typical EPDM insulation formulation . Fillers such as carbon fiber, silica, asbestos, cork, and glass fiber can be used for improving the ablative efficiency . Some of the EPDM composites that are used as insulating material for rocket motor casing are listed in the Table .…”

Section: A Focus On Ehsms For Srmmentioning

confidence: 99%

Recent developments in elastomeric heat shielding materials for solid rocket motor casing application for future perspective

George

Panda

Mohanty

et al. 2017

Polymers for Advanced Techs

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Catastrophic breakdown that occurs during the flight of supersonic vehicles demands more focused research in the insulation of rocket engines. At present, optimization of polymeric ablatives as viable insulation for solid rocket motor casing has a prominent role in the successful mission of rockets. Among polymers, elastomer serves an imperative part. Comprehensive investigations were disclosed, especially in the elastomeric heat shielding materials with various reinforcing agents. In this paper, research progress of mostly used elastomers is reviewed, and a circumstantial understanding about the features of ablation and insulation has been validated. 2-4 Therefore, to protect the vehicle from miserable failure of spacecraft, some design features are added to cope with the aerodynamic heating. 5Thermal protection system (TPS) materials impart heat shield to protect the structure, aerodynamic surface and the payload of missiles, and those vehicles interacting with the hypersonic environment. 6,7 Polymeric ablative materials serve to effect as TPS that defends space vehicles and probes during the atmospheric entry; they are effective to produce passively cooled rocket combustion chambers 8 and to render insulation to the solid rocket motors (SRMs) at high temperature. [9][10][11] Although some nonpolymeric materials such as inorganic polymers/ceramics or metals have been used as ablative TPS, polymeric ablatives represent the most flexible category of ablatives. In contrast to the inorganic polymers, polymer ablatives have more inborn benefits: high-heat shock resistance, lower density, good mechanical strength, and thermal insulation capabilities. 12The broad range of heat shielding materials (HSMs) for rocket motor casing is produced from reinforced thermosets or elastomers. [13][14][15][16][17][18][19] The most assuring material for the HSM for rocket motors is the elastomers, which can be produced as rubbers, foamed rubbers, or fiber-reinforced composite materials. On the grounds of lightweight, low thermal conductivity, stability in the mechanical and thermal stresses during the operation, elastomeric HSMs (EHSMs) can find relevance in the insulation of SRM casing where thermal insulation is a prime necessity. They do not possess the ability to form cokes without the introduction of special additives due to the linear chain structure of elastomers, thus no solid carbonic residue on thermal decomposition.Also, elastomers have high elongation at break and the capacity to withstand the mechanical and the thermal stresses during the manufacturing and in use. 20This review puts the elastomeric materials as ablative insulators for SRM into frame and would confer the readers the progress that has been attained in developing relatively low surface eroding and ablative insulating systems for SRM. These systems can be used to manufacture variety of ablative TPS systems for rocket motor casing application and would provide an idea regarding the composite system that would behave elastomeric as well as ablative. Scrutini...

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Thermal and ablative properties of rocket insulator compound based on EPDM

Cited by 60 publications

References 3 publications

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

Thermo-Mechanical Performance of Natural Rubber/Recycled Ethylene-Propylene-Diene Rubber Blends in the Presence of ZnO Nanoparticles

Recent developments in elastomeric heat shielding materials for solid rocket motor casing application for future perspective

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