Erosion characteristics of ethylene propylene diene monomer composite insulation by high-temperature dense particles

Li, Jiang; Guo, Mengfei; Xiang, Lin; Liu, Yang; Xi, Kun; Guan, Yiwen

doi:10.1016/j.actaastro.2018.01.055

Cited by 23 publications

(7 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The thick morphology of the insulating layer aids in the better ablation performance of the hybrid composite. The surface roughness can negatively influence the convective heat and can deprive the ablation rate 33–35 even though the dense char layer has improved thermal conductivity that may contradict the improved ablation resistance. Despite the above facts, the S9 composite (Figure 14), with a relatively dense structure and comparatively flat surface than the S5 composite (Figure 13), is the most appropriate one for the thermal insulation.…”

Section: Resultsmentioning

confidence: 99%

Thermal insulation behaviour of Ethylene propylene diene monomer rubber/kevlar fiber based hybrid composites containing Nanosilica for solid rocket motor insulation

George

Mohanty

Biswal

et al. 2020

J of Applied Polymer Sci

View full text Add to dashboard Cite

The current research discusses the properties of an elastomeric heat-shielding material, based on nano-silica (NS) filled ethylene propylene diene monomer (EPDM) rubber/Kevlar fiber (KF) hybrid composites. The developed elastomeric insulating material consists of an aromatic polyamide fiber (KF) and silica nanoparticles. An in-depth analysis of mechanical properties, density, coefficient of thermal expansion, thermal conductivity, thermogravimetric analysis, and heat release rate of the insulating materials-was performed. TEM micrograph represents an excellent distribution of nanoparticles in the EPDM matrix. The improvement in the mechanical and the flame retardancy of the NS filled EPDM/KF hybrid composite insulations is based on the fiber/ matrix adhesion. Maleic anhydride grafting confers polarity to the nonpolar rubber matrix. The char residues of the insulations inspected by scanning electron microscopy and energy dispersive spectroscopy are depicting a rigid and rough surface by the optimal composites, which can aid in better insulation. The optimal formulation of the hybrid composites exhibited a 220% enhancement in char residue with improved thermal stability and mechanical properties.

show abstract

Section: Resultsmentioning

confidence: 99%

Thermal insulation behaviour of Ethylene propylene diene monomer rubber/kevlar fiber based hybrid composites containing Nanosilica for solid rocket motor insulation

George

Mohanty

Biswal

et al. 2020

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…The dense char layer morphology greatly influences the insulation and ablation performance of the composite: the dense char layer has better mechanical properties, which can improve the resistance of the char layer against erosion by the gas flow and particles 1,21,33 .…”

Section: Reaction Layer Analysis and Mass Loss Ratementioning

confidence: 99%

Performance of EPDM Composites Under Thermal Plasma Ablative Tests

et al. 2023

View full text Add to dashboard Cite

In this work, a thermal plasma-based ablation test system was used to evaluate the ablative performance of the EPDM composite. The system produces a high enthalpy plasma jet generated by a plasma (DC) torch, operating at atmospheric pressure using compressed air as working gas, enabling the variation of the thermal flux concerned with the studied EPDM composites. The samples were characterized using Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS), Fourier-Transform Infrared spectroscopy (FTIR), and Thermogravimetric Analysis (TGA) to investigate the morphology, mass-loss rate, the reaction layer (char formation), and chemical changes of the samples for each thermal flux. For a complete evaluation, the thermal fluxes were varied in 0.30, 0.45, 0.60, 0.75, and 0.90 MW/m 2 and for each thermal flux, disk-shape samples remained exposed to the plasma jet for 10s. During the plasma jet exposure time, the temperatures of the surface and the back of the samples were collected to verify the formed char layer's insulator capacity and the samples' thermal diffusivity for each experimental condition. The mass loss is continuous under the thermal fluxes of 0.30 and 0.45 MW/m 2 , stabilizing at 60% until 0.75 MW/m 2 . The formed char layer begins to lose its protective capacity, evidenced by the size decrease (from 800 µm to 700 µm), due to the ablation process of the reaction layer from the thermal flux of 0.90 MW/m 2 .

show abstract

“…With the rapid development of aerospace technology, solid propellants have continued to develop toward high energy and low signal, and stricter technical requirements have been placed on inhibitor coatings 1 . An inhibitor coating is an indispensable part of solid rocket motors and is a layer of heat‐insulating/ablation‐resistant material placed between the shell and solid propellant 2–4 . It plays an important role in controlling the combustion area of the propellant charge and helps thermally insulate the engine casing.…”

Section: Introductionmentioning

confidence: 99%

“…1 An inhibitor coating is an indispensable part of solid rocket motors and is a layer of heat-insulating/ablation-resistant material placed between the shell and solid propellant. [2][3][4] It plays an important role in controlling the combustion area of the propellant charge and helps thermally insulate the engine casing. The inhibitor coating needs to have sufficient bonding performance, mechanical properties, low density, and ablation resistance, while also having anti-plasticizer migration resistance to protect the engine case.…”

Section: Introductionmentioning

confidence: 99%

Preparation and anti‐migration performance of ethylene propylene diene terpolymer composites modified with GO‐SiO₂ hybrid nanomaterials

Zhang

et al. 2022

J of Applied Polymer Sci

View full text Add to dashboard Cite

The anti-migration ethylene propylene diene terpolymer (EPDM) inhibitor coating was prepared by using EPDM as a composite matrix and siliconfunctionalized graphene oxide (GO-SiO 2 ) as modifiers to prevent the migration of energetic plasticizers in propellants. The anti-migration performance at different temperatures was analyzed by investigating the diffusion of dioctyl sebacate (DOS) using thermal analysis and immersion tests. After adding 1.0 wt% GO-SiO 2 , the overall performance of the inhibitor coating was the best, and the concentration of DOS that migrated into the inhibitor coating at 30 C was reduced from 45.1% to 38.8% (13.9% decrease). The results confirmed that the introduction of GO-SiO 2 prevented the migration of dioctyl sebacate to the EPDM inhibitor coating. The scanning electron microscopy results showed that GO-SiO 2 was well-dispersed in the inhibitor coating, and the tensile strength increased from 1.80 to 2.11 MPa. Migration kinetics analysis showed that the anti-migration performance was closely related to the crosslink density.

show abstract

Erosion characteristics of ethylene propylene diene monomer composite insulation by high-temperature dense particles

Cited by 23 publications

References 22 publications

Thermal insulation behaviour of Ethylene propylene diene monomer rubber/kevlar fiber based hybrid composites containing Nanosilica for solid rocket motor insulation

Thermal insulation behaviour of Ethylene propylene diene monomer rubber/kevlar fiber based hybrid composites containing Nanosilica for solid rocket motor insulation

Performance of EPDM Composites Under Thermal Plasma Ablative Tests

Preparation and anti‐migration performance of ethylene propylene diene terpolymer composites modified with GO‐SiO₂ hybrid nanomaterials

Contact Info

Product

Resources

About

Erosion characteristics of ethylene propylene diene monomer composite insulation by high-temperature dense particles

Cited by 23 publications

References 22 publications

Thermal insulation behaviour of Ethylene propylene diene monomer rubber/kevlar fiber based hybrid composites containing Nanosilica for solid rocket motor insulation

Thermal insulation behaviour of Ethylene propylene diene monomer rubber/kevlar fiber based hybrid composites containing Nanosilica for solid rocket motor insulation

Performance of EPDM Composites Under Thermal Plasma Ablative Tests

Preparation and anti‐migration performance of ethylene propylene diene terpolymer composites modified with GO‐SiO2 hybrid nanomaterials

Contact Info

Product

Resources

About

Preparation and anti‐migration performance of ethylene propylene diene terpolymer composites modified with GO‐SiO₂ hybrid nanomaterials