Thermal, mechanical and magnetic properties of functionalized magnetite/vinyl ester nanocomposites

被引：19

作者：

Jiang, Dawei ^{[1
]}

Huan, Yinghong ^{[1
]}

Sun, Caiying ^{[1
]}

Hu, Chunping ^{[1
]}

Guo, Jiang ^{[2
]}

Long, Jun ^{[3
]}

Khan, Mojammel A. ^{[4
]}

Young, David P. ^{[4
]}

Guo, Zhanhu ^{[2
]}

机构：

[1] Northeast Forestry Univ, Coll Sci, Harbin 150040, Peoples R China

[2] Univ Tennessee, Dept Chem & Biomol Engn, ICL, Knoxville, TN 37996 USA

[3] Harbin Inst Technol, Sch Chem Engn & Technol, Harbin 150001, Peoples R China

[4] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA

来源：

RSC ADVANCES | 2016年 / 6卷 / 94期

关键词：

SURFACE MODIFICATION; FE3O4; NANOPARTICLES; POLYMER COMPOSITES; CURING KINETICS; RESIN; MAGNETORESISTANCE; FABRICATION; VINYLESTER;

D O I：

10.1039/c6ra17190g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Magnetite (Fe3O4) nanoparticles grafted with thiol groups through silanization of (3-mercaptopropyl) trimethoxy-silane (Fe3O4-SH) were used for preparing vinyl ester resin (VER) nanocomposites with different Fe3O4 nanoparticle loading levels. The calculated thiol group graft percentage of only similar to 2.25% did show a significant effect on the physicochemical properties of VER nanosuspensions and nanocomposites. The exothermal curing peak temperature was shifted from 80 degrees C for pure VER to 75 degrees C for liquid VER with 10 wt% Fe3O4-SH. The tensile strength (72.6 MPa) of 5 wt% Fe3O4-SH reinforced nanocomposites was increased by 26.3% as compared with that (57.5 MPa) of pure VER composites. However, the tensile strength (62.7 MPa) of 5 wt% Fe3O4 was just increased by 9.0%. The polymer matrix and surface coating were observed to have negligible effects on the magnetic properties of nanoparticles, exhibiting superparamagnetic behaviors.

引用

页码：91584 / 91593

页数：10

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