Toughening of Epoxy Resin with Functionalized Core-Sheath Structured PAN/SBS Electrospun Fibers

被引：12

作者：

Guo, Tanghua ^{[1
]}

Zhou, Zhi ^{[1
]}

Guo, Honglei ^{[1
]}

Xiao, Guohua ^{[1
]}

Tang, Xinglei ^{[1
]}

Peng, Mao ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Polymer Sci & Engn, MOE Key Lab Macromol Synth & Functionalizat, Hangzhou 310027, Zhejiang, Peoples R China

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2014年 / 131卷 / 23期

基金：

中国国家自然科学基金;

关键词：

composites; elastomers; electrospinning; mechanical properties; resins; CARBON NANOTUBE/EPOXY COMPOSITES; INDUCED PHASE-SEPARATION; MECHANICAL-PROPERTIES; BEHAVIOR; RUBBER; NANOCOMPOSITES; NANOFIBERS; PARTICLES; MORPHOLOGY; MIXTURE;

D O I：

10.1002/app.41119

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Core-sheath structured electrospun fibers with styrene-butadiene-styrene (SBS) block copolymer as a rubbery core and polyacrylonitrile (PAN) as a hard sheath were prepared by coaxial electrospinning, and used to improve the toughness of epoxy resin. The surface of the fibers was aminated by reacting PAN with diethylenetriamine to improve the interfacial interaction between the fibers and epoxy. Scanning and transmission electron microscopies confirm the core-sheath structure of the PAN/SBS fibers. The Charpy impact energy is increased by the addition of electrospun fibers. When the content of aminated core-sheath fibers is 4 wt %, the Charpy impact energy is increased by 150%. Dynamic mechanical analysis shows that the glass transition temperature of epoxy is not decreased by the addition of core-sheath fibers. The high impact resistance is attributed to the rubbery core of the fibers that can absorb and dissipate impact energy, and the chemical bonding between the fibers and epoxy. (C) 2014 Wiley Periodicals, Inc.

引用

页数：9

共 40 条

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