Title: THERMALLY CURABLE POLY(SILYLACETYLENE)SILOXANE AS POLYMERIC PRECURSOR OF SIC CERAMIC
Page Range: p.99-102
Author(s): Chengda Yu; Mingcun Wang; Pi Li
File size: 216K
Download the pdf (subscribers only)
Buy the pdf (non-subscribers)
Journal: Polymers and Polymer Composites
Issue Year: ppc
Volume: 20
Issue No: No.1-2
Abstract
The pressureless pyrolysis of poly(silylacetylene)siloxane precursor to silicon carbide (SiC) was studied. Poly(silylacetylene)siloxane was synthesised via organometallic condensation. The precursor resin was well soluble in acetone, toluene and tetrahydrofuran (THF), etc. Thermal cure was conducted readily at 180-250 degrees C to form a hard brittle solid, and the cure mechanism was radical polymerisation of ethynyl groups. The ceramic yield of pyrolysis at 1500 degrees C was at about 67 wt.%. The molar ratio of Si/C in the SiC was found at 1:1.1-1:3 based on elements analysis. The results of x-ray diffraction (XRD) revealed the typical i-SiC structure in the poly(silylacetylene)siloxane derived ceramics. 8 Refs.
Related reading
More journal reading and science coverage connected to this topic.
Mechanical property of multiwall carbon nanotube reinforced polymer composites
Title: Mechanical property of multiwall carbon nanotube reinforced polymer composites Page Range: p.99-104 Author(s): Chao-Kai Yang; Yu-Roung Lee; Tsung-Han Hsieh; Tao-Hsing Chen; Tsung-Chieh Cheng…
Design of radar absorbing structures utilizing carbon-based polymer composites
Title: Design of radar absorbing structures utilizing carbon-based polymer composites Page Range: p.105-110 Author(s): Sang-Young Kim; Sung-Soo Kim File size: Download the pdf (subscribers…
Shear strength of concrete wide beams shear reinforced with GFRP plates
Title: Shear strength of concrete wide beams shear reinforced with GFRP plates Page Range: p.111-118 Author(s): Min Sook Kim; Joowon Kang; Young Hak Lee…