STUDY ON PYROLYSIS AND KINETICS OF POLYBOROSILOXANE RESIN

Abstract

Abstract: The pyrolysis characteristic of polyborosiloxane resin has been investigated by means of thermogravimetric analysis and pyrolysis-GCMS analysis. Models of the pyrolysis kinetics were derived using the coats-redfern integral method. The results show that the pyrolysis reactions of phenolic resin have two types: reaction of chain breaking (＜250 ℃ in the low temperature region), reaction of desilicon methylation (250 ℃ to 650 ℃ in the high temperature region) and stable phase (650 ℃ to 800 ℃), Through analysis of component and content of gas and solid during pyrolysis of polyborosiloxane resin, the possible reaction occurring in the is derived. The pyrolysis of borosiloxane resin pyrolysis of polyborosiloxane resin can be described by two thirds-order kinetics equations in main pyrolysis temperature regions. Active energy and pre-exponential factor increased and then decreased with increasing of heating rates.

Key words: polyborosiloxane resin, Py-GCMS, kinetics, Coats-Redfern, Malek

CLC Number:

TB332

SONG Jin-mei, WANG Lei, LI Yan-bin, YAO Ya-lin. STUDY ON PYROLYSIS AND KINETICS OF POLYBOROSILOXANE RESIN[J]. Fiber Reinforced Plastics/Composites, 2018, 0(3): 80-85.

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