Barrier Properties of Layered-Silicate Reinforced Ethylenepropylenediene Monomer/Chloroprene Rubber Nanorubbers

Wu, Chang-Mou; Hsieh, Wen Yen; Cheng, Kuo Bin; Lai, Chiu‐Chun; Lee, Kuei Chi

doi:10.3390/nano8050314

Cited by 7 publications

(1 citation statement)

References 31 publications

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“…Farajpour et al [ 17 ] reduced the migration of dioctyl phthalate plasticizers from polyurethane to ethylene propylene diene monomer substrates by dispersing carbon nanosheets in polyurethane liners. Wu et al [ 18 ] added layers of silicate to the ethylene propylene diene monomer/neoprene propellant liner to block the migration of triacetin and nitrocellulose. According to the polar interaction hypothesis, many polymers are able to provide electrons, while most of the plasticizer molecules are able to accept them.…”

Section: Introductionmentioning

confidence: 99%

Improvement in Migration Resistance of Hydroxyl-Terminated Polybutadiene (HTPB) Liners by Using Graphene Barriers

et al. 2022

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The excessive migration of plasticizers leads to debonding and cracking of a liner, which can compromise the safety of a solid propellant. Graphene oxide (GO), with a laminar structure as a filler, can effectively reduce the migration of plasticizers. In this study, we modified GO using toluene diisocyanate (TDI). The cross-link density of the substrate was increased by grafting isocyanate groups to obtain a denser liner for the purpose of preventing plasticizer migration. We also used octadecylamine (ODA) to modify GO by grafting negatively charged amide groups on the GO surface. The electrostatic repulsive effect of the amide group on the plasticizer molecules was used to prevent plasticizer migration. Two modified GOs were filled into the hydroxyl-terminated polybutadiene to prepare two composite liners. We then investigated the migration resistance and migration kinetics of each modified liner using the dipping method. In addition, we explored the mechanical properties of each modified liner. Compared with the original liner, the anti-migration and mechanical properties of the modified composite liners were significantly improved. Among them, the TDI-modified liner had the most obvious improvement in migration resistance, while the ODA-modified liner had the greatest improvement in bonding properties. All types of liners met the requirements of the current propellant systems. This study provides an effective reference for improving the migration resistance and bonding properties of the composite liner.

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Section: Introductionmentioning

confidence: 99%

Improvement in Migration Resistance of Hydroxyl-Terminated Polybutadiene (HTPB) Liners by Using Graphene Barriers

et al. 2022

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A Short Review about Aerospace Materials Characterization – Bonding Agents and Thermal Insulation

Miguel

Silva

et al. 2020

Propellants Explo Pyrotec

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This paper is a review about the types of bonding agents used in propellants, as well as the main polymeric matrices used in thermal insulation applied in the rocket engines studied throughout the last decades. This paper aims to show the importance both of the bonding agents in the composition of the propellant and of the thermal insulation coating the rocket engine, which is in contact with the propellant grain. This paper also shows many researchers have been applied, in different spectral regions, techniques as Fourier Transform Infrared Spectroscopy (FT‐IR), to characterization both the bonding agent and the thermal insulation, which suggests that it may be a future trend the use of Infrared Spectroscopy in studies about bonding agents and the polymeric matrix of the thermal insulation employed in rocket engines.

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Cellulosic CuI Nanoparticles as a Heterogeneous, Recyclable Catalyst for the Borylation of α,β-Unsaturated Acceptors in Aqueous Media

et al. 2021

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Barrier Properties of Layered-Silicate Reinforced Ethylenepropylenediene Monomer/Chloroprene Rubber Nanorubbers

Cited by 7 publications

References 31 publications

Improvement in Migration Resistance of Hydroxyl-Terminated Polybutadiene (HTPB) Liners by Using Graphene Barriers

Improvement in Migration Resistance of Hydroxyl-Terminated Polybutadiene (HTPB) Liners by Using Graphene Barriers

A Short Review about Aerospace Materials Characterization – Bonding Agents and Thermal Insulation

Cellulosic CuI Nanoparticles as a Heterogeneous, Recyclable Catalyst for the Borylation of α,β-Unsaturated Acceptors in Aqueous Media

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