Preparation and Characterization of Polyborosiloxanes and Their Blends with Phenolic Resin as Shapeable Ceramic Precursors

Hong-ying Zhao; Jing-bo Zhao; Hao Li; Tong Zhao

doi:10.1007/s10118-014-1393-1

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Preparation and Characterization of Polyborosiloxanes and Their Blends with Phenolic Resin as Shapeable Ceramic Precursors

Updated：2021-06-21

- Preparation and Characterization of Polyborosiloxanes and Their Blends with Phenolic Resin as Shapeable Ceramic Precursors
- Chinese Journal of Polymer Science Vol. 32, Issue 2, Pages: 187-196(2014)
- Affiliations：
  
  a.Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
  b.Laboratory of Advanced Polymer Materials, Institute of Chemistry, Chinese Academy Science, Beijing 100190, China
- Author bio：
  
  *Jing-bo Zhao (赵京波), E-mail: zhaojb@mail.buct.edu.cn
- Funds：
- DOI：10.1007/s10118-014-1393-1
  CLC：
- Received：10 April 2013，
  
  Revised：2013-06-08，
  
  Accepted：13 June 2013，
  
  Published：2014-02
- Accepted：
Scan QR Code
Hong-ying Zhao, Jing-bo Zhao, Hao Li, et al. Preparation and Characterization of Polyborosiloxanes and Their Blends with Phenolic Resin as Shapeable Ceramic Precursors[J]. Chinese Journal of Polymer Science, 2014, 32(2): 187-196.
DOI：

Hong-ying Zhao, Jing-bo Zhao, Hao Li, et al. Preparation and Characterization of Polyborosiloxanes and Their Blends with Phenolic Resin as Shapeable Ceramic Precursors[J]. Chinese Journal of Polymer Science, 2014, 32(2): 187-196. DOI： 10.1007/s10118-014-1393-1.

摘要

Abstract

Two polyborosiloxanes (PBSis) with char yield up to 74.13% at 800 ℃ were synthesized by the direct polycondensation of boric acid with phenyltrimethoxysilane in diglyme. The PBSis were characterized by gel permeation chromatography

IR spectroscopy as well as

H-

Si- and 11B-NMR. PBSi modified phenol-formaldehyde resins (PBSi/PFs) were prepared at different PBSi/PF mass ratios and were cured at 150 ℃. The PBSi/PFs were characterized by IR spectroscopy

scanning electron microscopy

thermogravimetric analysis and tensile test. The results revealed that the cured PBSi/PFs had sea-island morphology and higher char yield than the common PF. PBSi/PF blend with PBSi/PF mass ratio of 0.4:1 had char yield up to 70.83% at 800 ℃. The PBSi/PFs had tensile strength similar to PF. The ceramization of PBSi/PFs was also studied. The silicon boron oxycarbide (SiBOC) ceramics formed were characterized by IR spectroscopy and elemental analysis. This method provided a valuable way to prepare easily shapeable polymer blends as ceramic precursors.

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