Development of fluorocarbon rubber for backup seals of sodium cooled fast breeder reactor

Sinha, Nipun; Mukhopadhyay, R.; Dhupia, D.; Gupta, Saikat Das; Raj, Baldev

doi:10.1016/j.matdes.2011.05.037

Cited by 11 publications

(1 citation statement)

References 13 publications

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“…The increasing use of such polymers in automobiles, aerospace, off shore and energy related industries impose them stringent product performance standards under critical temperature conditions and in hostile chemical environments 3,4 . It is also used in elastomeric sealing applications of nuclear reactors 5 . The application of fluoroether rubber was overviewed in military affairs, automobile, petroleum exploitation and semiconductor industry 6 .…”

Section: Introductionmentioning

confidence: 99%

Efficiencies of Dipolymer Rubber Blends (EPDM\FKM) using Common Weight Data Envelopment Analysis

George

Nair

2017

Mat. Res.

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Polymer blends are generally categorized into two main classes: miscible blends that exist in a single homogeneous phase exhibiting synergistic properties and immiscible blends that have 2 or more different phases. There is also a third category of blends called technologically compatible blend, which exist in two or more different phases on micro scale, yet displays combination of properties. Ethylene-propylene-diene rubber (EPDM) and Hexa fluoropropylene-vinylidinefluoride dipolymer, Fluoroelastomer (FKM) blends with and without compatibilizer (MA-g-EPDM) were prepared by two-roll mill mixing. The aim of the work is to find out the best blend ratio and the amount of compatibilizer loading on thermal and mechanical properties by applying a novel mathematical programming technique called Data Envelopment Analysis (DEA). Using the different concentration of the ingredients used as inputs and the extent to which certain properties satisfied by the blends as outputs, a DEA model is developed. The blends which will be referred to as Decision Making Units (DMUs) were classified in terms of their efficiency. It is observed that the efficiency of all the compatibilized blends is higher than that of uncompatibilized blends. The maximum efficiency is obtained for 2.5 phr compatiblized blend.

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Section: Introductionmentioning

confidence: 99%

Efficiencies of Dipolymer Rubber Blends (EPDM\FKM) using Common Weight Data Envelopment Analysis

George

Nair

2017

Mat. Res.

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Lessons Learned from Failures and Design Improvements for Large Diameter Seals

Kaushal,

Patri,

Sharma

et al. 2024

J Fail. Anal. and Preven.

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Large diameter seals are used in Prototype Fast Breeder Reactor (PFBR) to prevent the escape of radioactive argon cover gas through wide annular gaps. The design of these seals shall address different challenges than normal seals. The large tolerances needed on the width of annulus, achievable tolerances on rubber, clearances in the seal holder, etc., influence the seal performance. The paper discusses analytical and experimental work done to develop robust large diameter seals. The contours of the present study are based on the feedback from the testing and qualification of small size model seals. Various permutations of geometry for seal and its holder are numerically investigated. The study mainly highlighted the influence of seal holder on the seal performance. Various sensitivity studies done on selected seal and seal holder demonstrated robustness of the design solutions. Graphical Abstract

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A case study on elimination of premature failure source from manufacture of fluoroelastomer inflatable seals for Sodium-cooled Fast Reactor towards sustainability

Sinha

Chattopadhyay

2022

Engineering Failure Analysis

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Development of fluorocarbon rubber for backup seals of sodium cooled fast breeder reactor

Cited by 11 publications

References 13 publications

Efficiencies of Dipolymer Rubber Blends (EPDM\FKM) using Common Weight Data Envelopment Analysis

Efficiencies of Dipolymer Rubber Blends (EPDM\FKM) using Common Weight Data Envelopment Analysis

Lessons Learned from Failures and Design Improvements for Large Diameter Seals

A case study on elimination of premature failure source from manufacture of fluoroelastomer inflatable seals for Sodium-cooled Fast Reactor towards sustainability

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