Raising pyrolysis yield of preceramic polymers of silicon carbonitride

Polymeric precursors for silicon carbonitrides were prepared by three synthetic routes starting with ammonolysis of dichloromethylsilane (CH3SiHCl2). Two methods for raising pyrolysis yield were investigated. One method was to enhance the degree of crosslinking by copolymerising with trichlorosilane...

Full description

Saved in:
Bibliographic Details
Published inJournal of materials science Vol. 30; no. 17; pp. 4463 - 4468
Main Authors Yang, Der-Lern, Tsai, Dah-Shyang, Liu, Hui-Chi
Format Journal Article
LanguageEnglish
Published Heidelberg Springer 01.09.1995
Subjects
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Exact sciences and technology
Miscellaneous
Technical ceramics
Infrared spectrometry
Pyrolysis
Thermogravimetry
Polymer
Differential thermal analysis
Silicon Carbides nitrides
NMR spectrometry
Manufacturing
Experimental study
Precursor
Non oxide ceramics
Online AccessGet full text

Cover

More Information
Summary:Polymeric precursors for silicon carbonitrides were prepared by three synthetic routes starting with ammonolysis of dichloromethylsilane (CH3SiHCl2). Two methods for raising pyrolysis yield were investigated. One method was to enhance the degree of crosslinking by copolymerising with trichlorosilane (SiHCl3) consecutively. The other method was to leach out the less soluble macromolecules in the polymer precursor by organic solvents. A 92% pyrolysis yield can be reached through combining the two methods. Precursors with higher yields are characterised with weight losses and heat events during pyrolysis shifting towards higher temperatures. 16 refs
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0022-2461
1573-4803
DOI:10.1007/BF00361532