PREPARATION AND CERAMIZATION OF ZIRCONIUM AND SILICON CONTAINING ORGANIC PRECURSORS

Abstract

Abstract: Zirconium-containing polymer (ZMP) with a main chain of-Zr-O-CH₂-CH- and an unsaturated group in the side was prepared by using zirconium n-propoxide, acetylacetone and 1,2-propanediol as raw materials of zirconium source. A silicon alkyne resin (PTSA) with a main chain of -SiH, -C≡C- was used as a silicon source. The two were reconstituted at a mass ratio of 2∶5 to obtain a ceramic precursor (PMS). The ZMP structure was characterized by FT-IR and NMR. The elemental composition of ZMP was analyzed by EDS. The curing behavior of PMS was investigated by DSC and in-situ infrared, and the heat resistance of PMS was studied by TGA. The TGA test shows that the precursor has good heat and thermal stability, and the mass retention rates at 1000 ℃ under nitrogen and air atmosphere are 90.24% and 88.53%, respectively. The ceramization evolution of PMS was studied by XRD, SEM, TEM and Raman. The ceramization evolution results show that the ceramic conversion rate of PMS at 1600 ℃ is as high as 57.4%, and the ceramic products contain high crystallinity ZrC and SiC crystals.

Key words: precursor, post polymerization, ceramization

CLC Number:

TB332

YANG Ming-ze, ZHOU Quan, PENG Zheng-qiang, SONG Ning. PREPARATION AND CERAMIZATION OF ZIRCONIUM AND SILICON CONTAINING ORGANIC PRECURSORS[J]. Fiber Reinforced Plastics/Composites, 2019, 0(3): 43-48.

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