Volume 10 Issue 2
Apr.  2017
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MA Chen, MA Zhuang, GAO Li-hong, WANG Fu-chi. Laser damage mechanism of flake graphite modified phenolic resin coating[J]. Chinese Optics, 2017, 10(2): 249-255. doi: 10.3788/CO.20171002.0249
Citation: MA Chen, MA Zhuang, GAO Li-hong, WANG Fu-chi. Laser damage mechanism of flake graphite modified phenolic resin coating[J]. Chinese Optics, 2017, 10(2): 249-255. doi: 10.3788/CO.20171002.0249

Laser damage mechanism of flake graphite modified phenolic resin coating

Funds:

National Natural Science Foundation of China 51302013

  • Received Date: 24 Oct 2016
  • Rev Recd Date: 02 Dec 2016
  • Publish Date: 01 Apr 2017
  • In order to analyze the laser damage mechanism of flake graphite modified phenolic resin coating, we use laser irradiation method to study the process of irradiation. First, we prepare phenolic resin coatings and flake graphite modified phenolic resin coatings and irradiate these coatings with different laser parameters. According to the morphologies and area of the damage areas, we get the information about the modification effect of flake graphite. After that, the degree of graphitization and the micro-morphologies of the residual char are tested to analyze the structure of damage area. Besides, ablation depth and ablation area are measured through the three-dimensional micro shape. Finally, we analyze the effect of binder ratios by comparing the micro-morphologies and area of different coatings' damage areas. Experimental results indicate that phenolic resin will decompose into residual char with different degrees of graphitization when it is irradiated by laser. With the modification of flake graphite, the damage area of the coating increases by 35 mm2. Thus, flake graphite improves the horizontal heat dissipation ability of the coating. However, a large binder ratio will reduce the residual char, which plays a part in sticking flake graphite on the coating. The coating will be damaged seriously because of the loss of flake graphite.

     

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