Microstructure and Properties of SCE-Al2O3/PES-MBAE Composite. (28th August 2014)

• Record Type: Journal Article
• Authors: Chen, Yufei; Dai, Qiwang; Zhang, Xiwang; Feng, Tao
• Other Names: Wahab Rizwan Academic Editor.
• Is Part Of: Journal of nanomaterials. Volume 2014(2014)
• Publication Date: 2014-08-28
• Subjects: Nanostructured materials -- Periodicals; Nanotechnology -- Periodicals; Nanomatériaux; Nanostructured materials; Nanotechnology; Nanostructures; Nanotechnology; Periodicals; Fulltext; Internet Resources; Periodicals; 620.115
• DOI: 10.1155/2014/356273
• Languages: English
• ISSNs: 1687-4110

Abstract

Abstract : SCE-Al2 O3 was the nano-Al2 O3 modified by supercritical ethanol and the surface of SCE-Al2 O3 was coated with active group. 4, 4′-diaminodiphenylmethane bismaleimide (MBMI) was used as matrix; 3, 3′-diallyl bisphenol A (BBA) and bisphenol-A diallyl ether (BBE) were used as reactive diluent, polyethersulfone (PES) as toughening agent, and SCE-Al2 O3 as modifier; SCE-Al2 O3 /PES-MBAE nanocomposite was prepared through in situ sol-gel method. The mechanism of composite toughened by PES was observed and analyzed. FTIR indicated that the reaction between MBMI and allyl compound occurred and SCE-Al2 O3 had doped into the polymer matrix. SEM showed that PES particle was inlaid in matrix and presented as a two-phase structure in matrix. The heat resistance, dielectric properties, and mechanical properties of SCE-Al2 O3 /PES-MBAE nanocomposites were evaluated. The results showed that with the incorporation of PES, although the toughness of the material improved, the heat resistance and dielectric properties of material declined, meanwhile. The adulteration of SCE-Al2 O3 could remedy the harmful effect caused by PES, while the content of SCE-Al2 O3 was reasonable. The decomposition temperature, dielectric constant, and dielectric loss of composite were 441.23°C, 3.63 (100 Hz), and 1.52 × 10 −3 (100 Hz); the bending strength and impact strength were 129.22 MPa and 13.19 kJ/mm 2, respectively, when the content of SCE-Al2 O3 was 3 wt% and PES was 5 wt%.