Rheological Measurement of In Situ Preheating Polycarbosilane Melt

Liu Ying Huang; Ziqing Zhu; Xuan Cheng; Ying Zhang

doi:10.4028/www.scientific.net/KEM.726.90

Paper Titles

ICP-AES Determination of Sulfide and Sulfate Content in Pebble and Crushed Stone
p.70

Ion Chromatography for the Continuous Determination of Sulfite and Sulfide in Gypsum and Gypsum Products
p.75

Preliminary Discussion of the Detection Method for Asbestos
p.80

Measurement of Multilayer Film Thickness Using X-Ray Fluorescence Spectrometer
p.85

Rheological Measurement of In Situ Preheating Polycarbosilane Melt
p.90

Determining Zero Shear Viscosity of Polycarbosilane Melts
p.95

Determining Anisotropic Young’s Modulus of Ceramic Coatings by the Relative Method
p.100

Measurement for Elastic Modulus of Ultra-Thin Glass by Cantilever Beam Method
p.105

Evaluating Thermal Expansion Coefficient of SiC Coatings by Relative Method
p.110

HomeKey Engineering MaterialsKey Engineering Materials Vol. 726Rheological Measurement of In Situ Preheating...

Rheological Measurement of In Situ Preheating Polycarbosilane Melt

Abstract:

Rotational rheometer has been widely used in studying rheological properties of materials. However, the conventional rheological measurements may not be applicable for some non-traditional materials with characteristic properties. Polycarbosilane (PCS) is an oligomer and in the form of solid state at room temperature. A large amount of air bubbles are evolved during the heating process of PCS, which is extremely harmful for rheological measurements of PCS melt and detrimentally influences the accuracy of rheological data. In this work, a series of PCS raw samples were pretreated with different heating processes by the advanced rheometric expansion system at 315°C before the rheological measurements at 295°C. The softening point temperatures and molecular weight distributions of different PCS samples were obtained before and after the preheating processes. The experimental data collected with the in-situ preheating and ex-situ preheating for 1 h were compared.

You might also be interested in these eBooks

Properties and Testing Techniques of Inorganic Materials II

View Preview

Info:

Periodical:

Key Engineering Materials (Volume 726)

Pages:

90-94

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.726.90

Citation:

Cite this paper

Online since:

January 2017

Authors:

Liu Ying Huang, Ziqing Zhu, Xuan Cheng, Ying Zhang

Keywords:

Ex Situ Preheating, In Situ Preheating, Polycarbosilane, Shear Stress

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] P. J. Carreau, D. C. R. De Kee, and R. P. Chhabra, Rheology of polymeric systems, principles and applications, Hanser Publishers, New York, (1997).

Google Scholar

[2] ARES user manual, TA Instruments—Waters LLC, New Castle, (2003).

Google Scholar

[3] S. Yajima, Y. Hasegawa, J. Hayashi, M. Omori, Synthesis of continuous silicon carbide fibre with high tensile strength and high Young's modulus, Journal of Materials Science. 13 (1978) 2569-2576.

DOI: 10.1007/bf02402743

Google Scholar

[4] J. M. Yang, X. Cheng, Y. X. Yu, Y. Zhang. Quantitative determinations in the molecular structures of polyaluminocarbosilane, Polymer. 52(17) (2011) 3811-3818.

DOI: 10.1016/j.polymer.2011.06.021

Google Scholar

[5] J. Z. Wang, J. J. Li, Y. X. Yu, C. Y. Gong, X. Cheng, Y. Zhang, Steady-State Rheological Characterizations of Polycarbosilane Melts, Polymer Materials Science and Engineering. 25 (2009) 53-56.

Google Scholar

[6] X. Cheng, X. W. Bai, J. J. Li, H. Z. Chen, Y. Zhang, Experimental Observations of Time-Dependent Behaviors for Polycarbosilane Melt, Journal of Applied Polymer Science. 120 (2011) 3395-3400.

DOI: 10.1002/app.33299

Google Scholar