|Table of Contents|

Microstructure of carbon fiber-reinforced PTFE(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2019年02期
Page:
74-78
Research Field:
工艺与材料
Publishing date:

Info

Title:
Microstructure of carbon fiber-reinforced PTFE
Author(s):
ZHANG Wanqing; LI Hongchun; MA Hairui
(Xi'an Aerospace Propulsion Institute, Xi'an 710100, China)
Keywords:
carbon fiber-reinforced PTFE material;  microstructure;  defect
PACS:
V254
DOI:
-
Abstract:
In order to study the optimal processing technology of carbon fiber-reinforced polytetrafluoro-ethylene(PTFE)materials, the microstructure of carbon fiber-reinforced PTFE materials was observed by scanning electron microscopy.The crystal morphology of carbon fiber-reinforced PTFE and the microscopic defects inside the blank after molding were compared and analyzed.Through the study of the microstructure of carbon fiber-reinforced PTFE materials, the purpose of determining the best processing technology is achieved.Studies have shown that “spherical crystals” exist on the surface of carbon fiber reinforced PTFE blanks, and no “spherical crystals” are produced inside the non-defective blanks.The pores and delamination defects inside the carbon fiber-reinforced PTFE blank are formed during the cold pressing process.Reducing the agglomeration of carbon fiber-reinforced PTFE powder can effectively reduce the generation of air hole defects in the blank after forming.Reducing the pressuring pressure of carbon fiber-reinforced PTFE material when it is cold pressed can effectively reduce the occurrence of delamination defects.

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Last Update: 2019-04-30