Investigation of thermal decomposition behavior of modified polysulfide rubber based on DART-HRMS-ICA
LIU Ying-fan
LI Teng-fei
CAI Qian-jie
SUN Xiao-li
SUN Yu-an
LIU Shao-wen
WANG Guo-qing
Abstract：The thermal decomposition behavior of modified polysulfide rubber (MPR)was investigated by direct analysis in real time-high resolution mass spectrometry (DART-HRMS)independent component analysis (ICA).The DART conditions were optimized,and then two independent component (IC-1 and IC-2 ) obtained with different ion source temperature under the optimal conditions were processed by ICA.The results showed that ion collection effect of the sample and ionization signal strength were better when sample transmis-sion speed was 0.5 mm /s and ion source grid voltage was 150 V.The sample had good stability when the tem-perature was lower than 200 ℃.IC-1 began to decompose at 200 ℃,and the sample could be decomposed as IC-2 which could characterize the components with lower molecular weights at 350 ℃.Modified polysulfide rubber had good thermal stability at room temperature environment,and could be widely used in industrial pro-duction.
Keywords：direct analysis in real time (DART)-high resolution mass spec-trometry (HRMS)-independent component analysis (ICA)modi-fied polysulfide rubberthermal decomposition behavior
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 29-34 )