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Characteristics and properties of SiO2-Al2O3/EP-PU composite

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Abstract

SiO2-Al2O3/EP-PU nanocomposites, which contained polyurethane (PU) flexible chain, were prepared via epoxy resin, PU and modified silica and alumina particles. Silica and alumina particles were modified by coupling agents KH-560 and KH550, respectively. EP-PU was used as matrix, PU as toughening agent, SiO2-Al2O3 as filled and MTHPA as curing agent. The mass ratio of PU was 30% in this system. The chemical structure of the products was confirmed by FT-IR measurements, the morphological structure of fracture surface and the surface of the hybrid materials were observed by scanning electron microscope (SEM) and transmission electron microscope (TEM), and shearing strength and breakdown field were measured, respectively. When the mass fraction of inorganic component was 10% and the mass ratio of SiO2 to Al2O3 was 4.5:5.5, shearing strength of SiO2-Al2O3/EP-PU was 28.5 MPa and breakdown field was 15 kV/mm, the data could meet the property requirement of insulating material.

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Authors and Affiliations

  1. Key Laboratory of Engineering Dielectrics and Its Application of Ministry of Education, Harbin University of Science and Technology, Harbin, 150080, China

    Yu-fei Chen  (陈宇飞)

  2. College of Materials Science and Engineering, Harbin University of Science and Technology, Harbin, 150040, China

    Yu-fei Chen  (陈宇飞), Qi-wang Dai  (代起望), Cai-wei Lin  (林彩威) & Tao Feng  (冯涛)

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  1. Yu-fei Chen  (陈宇飞)
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  2. Qi-wang Dai  (代起望)
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  3. Cai-wei Lin  (林彩威)
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  4. Tao Feng  (冯涛)
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Correspondence to Yu-fei Chen  (陈宇飞).

Additional information

Foundation item: Project(2012RFJGG006) supported by the Harbin Science and Technology Innovation Foundation, China

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Chen, Yf., Dai, Qw., Lin, Cw. et al. Characteristics and properties of SiO2-Al2O3/EP-PU composite. J. Cent. South Univ. 21, 4076–4083 (2014). https://doi.org/10.1007/s11771-014-2400-y

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  • DOI: https://doi.org/10.1007/s11771-014-2400-y

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