Curing behavior and properties of Fe3O4 areogels/epoxidized hyperbranched polyesters/epoxy resin systems

Ya Zhang; Chunpeng Chai; Yunjun Luo; Lu Wang; Guoping Li

Curing behavior and properties of Fe₃O₄ areogels/epoxidized hyperbranched polyesters/epoxy resin systems

Ya Zhang, Chunpeng Chai, Yunjun Luo^*, Lu Wang, Guoping Li

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

Abstract

Curing process and curing kinetics of Fe₃O₄ areogels/epoxidized hyperbranched polyesters (EHBP)/epoxy resin (EP) systems were investigated by the non-isothermal DSC under different heating rates. Apparent activation energy of the curing systems was calculated by Kissinger method and Ozawa method respectively, and the reaction order was calculated according to Crane formula. Based on the DSC data, the curing process of the curing systems is 100℃ 2h→120℃ 2h→140℃ 1.5h, and the mechanical properties of the composites according to the curing processes were tested by the mechanics performance test. The results indicate that the lower content of Fe₃O₄ areogels could keep excellent mechanical properties of epoxy resin. When the mass fraction of Fe₃O₄ areogels is 1%, the tensile strength and impact strength are 61.67 MPa and 16.36 kJ/m², respectively, the density is 1.204 g/cm³, and the reflectivity is below -10 dB in the range of 8~18GHz.

Original language	English
Pages (from-to)	88-93 and 99
Journal	Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering
Volume	31
Issue number	3
Publication status	Published - 1 Mar 2015

Keywords

Curing kinetics
Epoxy resin
FeO areogels
Mechanical properties
Reflectivity

Cite this

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title = "Curing behavior and properties of Fe3O4 areogels/epoxidized hyperbranched polyesters/epoxy resin systems",

abstract = "Curing process and curing kinetics of Fe3O4 areogels/epoxidized hyperbranched polyesters (EHBP)/epoxy resin (EP) systems were investigated by the non-isothermal DSC under different heating rates. Apparent activation energy of the curing systems was calculated by Kissinger method and Ozawa method respectively, and the reaction order was calculated according to Crane formula. Based on the DSC data, the curing process of the curing systems is 100℃ 2h→120℃ 2h→140℃ 1.5h, and the mechanical properties of the composites according to the curing processes were tested by the mechanics performance test. The results indicate that the lower content of Fe3O4 areogels could keep excellent mechanical properties of epoxy resin. When the mass fraction of Fe3O4 areogels is 1%, the tensile strength and impact strength are 61.67 MPa and 16.36 kJ/m2, respectively, the density is 1.204 g/cm3, and the reflectivity is below -10 dB in the range of 8~18GHz.",

keywords = "Curing kinetics, Epoxy resin, FeO areogels, Mechanical properties, Reflectivity",

author = "Ya Zhang and Chunpeng Chai and Yunjun Luo and Lu Wang and Guoping Li",

year = "2015",

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day = "1",

language = "English",

volume = "31",

pages = "88--93 and 99",

journal = "Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering",

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T1 - Curing behavior and properties of Fe3O4 areogels/epoxidized hyperbranched polyesters/epoxy resin systems

AU - Zhang, Ya

AU - Chai, Chunpeng

AU - Luo, Yunjun

AU - Wang, Lu

AU - Li, Guoping

PY - 2015/3/1

Y1 - 2015/3/1

N2 - Curing process and curing kinetics of Fe3O4 areogels/epoxidized hyperbranched polyesters (EHBP)/epoxy resin (EP) systems were investigated by the non-isothermal DSC under different heating rates. Apparent activation energy of the curing systems was calculated by Kissinger method and Ozawa method respectively, and the reaction order was calculated according to Crane formula. Based on the DSC data, the curing process of the curing systems is 100℃ 2h→120℃ 2h→140℃ 1.5h, and the mechanical properties of the composites according to the curing processes were tested by the mechanics performance test. The results indicate that the lower content of Fe3O4 areogels could keep excellent mechanical properties of epoxy resin. When the mass fraction of Fe3O4 areogels is 1%, the tensile strength and impact strength are 61.67 MPa and 16.36 kJ/m2, respectively, the density is 1.204 g/cm3, and the reflectivity is below -10 dB in the range of 8~18GHz.

AB - Curing process and curing kinetics of Fe3O4 areogels/epoxidized hyperbranched polyesters (EHBP)/epoxy resin (EP) systems were investigated by the non-isothermal DSC under different heating rates. Apparent activation energy of the curing systems was calculated by Kissinger method and Ozawa method respectively, and the reaction order was calculated according to Crane formula. Based on the DSC data, the curing process of the curing systems is 100℃ 2h→120℃ 2h→140℃ 1.5h, and the mechanical properties of the composites according to the curing processes were tested by the mechanics performance test. The results indicate that the lower content of Fe3O4 areogels could keep excellent mechanical properties of epoxy resin. When the mass fraction of Fe3O4 areogels is 1%, the tensile strength and impact strength are 61.67 MPa and 16.36 kJ/m2, respectively, the density is 1.204 g/cm3, and the reflectivity is below -10 dB in the range of 8~18GHz.

KW - Curing kinetics

KW - Epoxy resin

KW - FeO areogels

KW - Mechanical properties

KW - Reflectivity

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IS - 3

ER -

Curing behavior and properties of Fe₃O₄ areogels/epoxidized hyperbranched polyesters/epoxy resin systems

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Keywords

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