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Article Navigation> JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY> 2012> 21(4): 564-570
LIAO Qiu-heng, HAO Jian-wei, DU Jian-xin. Study of intumescent flame-resistant fluoroelastomer[J]. JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2012, 21(4): 564-570.
Citation: LIAO Qiu-heng, HAO Jian-wei, DU Jian-xin. Study of intumescent flame-resistant fluoroelastomer[J].JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2012, 21(4): 564-570.
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Study of intumescent flame-resistant fluoroelastomer

  • School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China

  • Received Date:2012-04-16
    Abstract
  • The efficiency of different intumescent flame-retardant (IFR) formulations designed to improve the flame resistance of fluoroelastomer (FKM) composites was studied. The proportion of ammonium polyphosphate (APP) with charring-foaming agent (CFA) in IFR systems, and the addition of synergists zinc borate (ZB) and ketonealdehyde resin (KR120) were investigated to show their effect on flame resistance of FKM. According to flame resistance tests, when the mass ratio of APP to CFA was 4∶1 as well as the loadings of IFR, ZB, KR120 were 83 parts per hundred resin (phr), 13phr, 25phr, respectively, the FKM-KR120/IFR-ZB composites had good synergetic flame resistant effect. TGA data showed that IFR and synergists could obviously lower the maximum weight loss rate of FKM composites and effectively increase the char residue at high temperature. The morphological structures of the composites observed by scanning electron microscopy (SEM) demonstrated that the addition of ZB and KR120 could clearly reduce the cracks in char residue and make the char layer structure more integrated and compact.
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