Estimating shelf life and degradation mechanisms of nitrile butadiene rubber for viscoelastic dampers

Journal of Elastomers & Plastics Pub Date : 2024-03-27 DOI:10.1177/00952443241243378

Syam Prasad Ammineni, Dumpala Lingaraju, Cherukuri Nagaraju

{"title":"Estimating shelf life and degradation mechanisms of nitrile butadiene rubber for viscoelastic dampers","authors":"Syam Prasad Ammineni, Dumpala Lingaraju, Cherukuri Nagaraju","doi":"10.1177/00952443241243378","DOIUrl":null,"url":null,"abstract":"This study investigates the shelf life of nitrile butadiene rubber (NBR) based on age and temperature factors. Natural aging of nitrile butadiene rubber samples is performed under laboratory conditions for 2 years, followed by thermogravimetric analysis to evaluate Arrhenius parameters. Toop’s equation is used to predict shelf life at 5% conversion rate. Model-free kinetic methods, including Ozawa-Flynn-Wall (OFW), Kissinger-Akahira-Sunose (KAS), and Kissinger, estimate shelf life at different temperatures for both virgin and naturally aged nitrile butadiene rubber. Results show close correlation between KAS and Kissinger methods, with slight variations in activation energy impacting shelf life. Fourier-transform infrared spectroscopy (FTIR) tests assess functional group changes with age. Virgin nitrile butadiene rubber activation energy: OFW-73.33 kJ/mol, KAS-68.43 kJ/mol. Aged nitrile butadiene rubber activation energy: OFW-72.57 kJ/mol, KAS-67.88 kJ/mol. Shelf life at 40°C: Virgin nitrile butadiene rubber - OFW-111.29 years, KAS-26.31 years. Aged nitrile butadiene rubber - OFW-89.01 years, KAS-22.37 years. These findings provide valuable insights for predicting and assessing nitrile butadiene rubber viscoelastic damper performance in engineering applications.","PeriodicalId":15613,"journal":{"name":"Journal of Elastomers & Plastics","volume":"106 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Elastomers & Plastics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1177/00952443241243378","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

This study investigates the shelf life of nitrile butadiene rubber (NBR) based on age and temperature factors. Natural aging of nitrile butadiene rubber samples is performed under laboratory conditions for 2 years, followed by thermogravimetric analysis to evaluate Arrhenius parameters. Toop’s equation is used to predict shelf life at 5% conversion rate. Model-free kinetic methods, including Ozawa-Flynn-Wall (OFW), Kissinger-Akahira-Sunose (KAS), and Kissinger, estimate shelf life at different temperatures for both virgin and naturally aged nitrile butadiene rubber. Results show close correlation between KAS and Kissinger methods, with slight variations in activation energy impacting shelf life. Fourier-transform infrared spectroscopy (FTIR) tests assess functional group changes with age. Virgin nitrile butadiene rubber activation energy: OFW-73.33 kJ/mol, KAS-68.43 kJ/mol. Aged nitrile butadiene rubber activation energy: OFW-72.57 kJ/mol, KAS-67.88 kJ/mol. Shelf life at 40°C: Virgin nitrile butadiene rubber - OFW-111.29 years, KAS-26.31 years. Aged nitrile butadiene rubber - OFW-89.01 years, KAS-22.37 years. These findings provide valuable insights for predicting and assessing nitrile butadiene rubber viscoelastic damper performance in engineering applications.

查看原文本刊更多论文

估算粘弹性阻尼器用丁腈橡胶的保质期和降解机制

本研究调查了丁腈橡胶（NBR）基于年龄和温度因素的保质期。丁腈橡胶样品在实验室条件下自然老化 2 年，然后进行热重分析，以评估 Arrhenius 参数。使用 Toop 方程预测 5%转化率下的保质期。小泽-弗林-沃尔（Ozawa-Flynn-Wall，OFW）、基辛格-阿卡希拉-苏诺塞（Kissinger-Akahira-Sunose，KAS）和基辛格（Kissinger）等无模型动力学方法估算了原生丁腈橡胶和天然老化丁腈橡胶在不同温度下的保质期。结果表明，KAS 和 Kissinger 方法密切相关，活化能的细微变化会影响保质期。傅立叶变换红外光谱（FTIR）测试评估了官能团随年龄的变化。丁腈橡胶活化能：OFW-73.33 kJ/mol，KAS-68.43 kJ/mol。老化丁腈橡胶活化能：OFW-72.57 kJ/mol，KAS-67.88 kJ/mol。40°C 下的保质期：处女丁腈橡胶 - OFW-111.29 年，KAS-26.31 年。陈化丁腈橡胶--OFW-89.01 年，KAS-22.37 年。这些发现为预测和评估丁腈橡胶粘弹性阻尼器在工程应用中的性能提供了有价值的见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of Elastomers & Plastics

自引率

0.00%

发文量