CHINESE JOURNAL OF ENERGETIC MATERIALS
+Advanced Search

Ignition Performance of the High Energy Chemical Igniter Coated with a PVAc Elastic Microsphere
Author:
Affiliation:

(1. School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, China; 2. School of Chemical Engineering, Anhui University of Science and Technology, Huainan 232001, China; 3. CAS Key Laboratory of Mechanical Behavior and Design University of Science and Technology of China, Hefei 230026, China)

Fund Project:

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
    Abstract:

    To reduce the effect of formability, combustion duration, burning rate and other parameters of the chemical igniter on the dust combustion and explosion experiments and improve the accuracy and repeatability of experimental data, the chemical igniter coated with a polyvinyl acetate (PVAc) elastic microsphere was developed. Firstly, the ignition powders were desensitized by paraffin wax, then a few drops of petroleum ether was added to the ignition powder to form a spherical ignition powder, then the spherical ignition powder was coated by ethanol solution of PVAc and dried in vacuum. In the process of drying, the petroleum ether was volatilized to make the coated film expand and the ignition powder bulk. The PVAc elastic hollow microsphere prepared has the advantages of good formability, strong toughness, water proof and oxidation resistance, etc. The deflagration characteristics of the igniter were studied by a high-speed camera and compared with other three types of igniters. The experimental results show that the igniter coated by PVAc elastic microsphere has a spherical flame propagation, a moderate flame velocity, and a stable ignition reliability, which can reduce the experimental data error of the dust explosion because of the influences of the igniter.

    Reference
    Related
    Cited by
Article Metrics
  • PDF:
  • HTML:
  • Abstract:
  • Cited by:
Get Citation

刘文近,程扬帆,陆松来,等. PVAc弹性微球包覆的高能化学点火具的点火性能[J].含能材料,2018,26(6):530-536.
LIU Wen-jin, CHENG Yang-fan, LU Song-lai, et al. Ignition Performance of the High Energy Chemical Igniter Coated with a PVAc Elastic Microsphere[J]. Chinese Journal of Energetic Materials,2018,26(6):530-536.

Cope
History
  • Received:October 19,2017
  • Revised:November 09,2017
  • Adopted:
  • Online: June 20,2018
  • Published: June 25,2018