The influence of curing agents in the impact properties of epoxy resin nanocomposites

被引：20

作者：

Amaro, Ana M. ^{[1
]}

Bernardo, Luis ^{[2
]}

Pinto, Deesy G. ^{[3
]}

Lopes, Sergio ^{[4
]}

Rodrigues, Joao ^{[3
]}

机构：

[1] Univ Coimbra, Ctr Mech Engn Mat & Proc CEMMPRE, Dept Mech Engn, P-3030788 Coimbra, Portugal

[2] Univ Beira Interior, Ctr Mat & Bldg Technol C MADE, P-6201001 Covilha, Portugal

[3] Univ Madeira, CQM, Campus Penteada, P-9020105 Funchal, Portugal

[4] Univ Coimbra, Ctr Mech Engn Mat & Proc CEMMPRE, Dept Civil Engn, P-3030788 Coimbra, Portugal

来源：

COMPOSITE STRUCTURES | 2017年 / 174卷

关键词：

A; Nanocomposites; B. Impact behavior; D. Mechanical testing; E; Cure; MECHANICAL-PROPERTIES; FRACTURE CHARACTERISTICS; ALUMINA PLATELETS; PERFORMANCE; COMPOSITES; BEHAVIOR; REINFORCEMENT; NANOPARTICLES; ENHANCEMENT; NANOALUMINA;

D O I：

10.1016/j.compstruct.2017.04.050

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

This study investigates the impact properties (impact strength (IS) and impact energy (IE)) of epoxy resin nanocomposites (EPNCs) manufactured with different curing agents and reinforced with alumina nanoparticles (NPs). The NPs consisted on alpha alumina with irregular shapes (100 nm maximum size) pretreated with a silane agent. The weight fractions of alumina NPs were 1, 3 and 5 wt(%). Two different epoxy (EP) resins were studied and compared. The first one was cured and post cured with bis (4-aminophenyl) methane (DDM) and the second one was cured with 3-Dodec-2-enyloxolane-2,5-dione( DDSA) + 8-methyl-3a, 4,7,7a-tetrahydro-4,7-methano-2-benzofuran-1,3-dione (MNA). Comparatively to the neat EP, and among the three NPs loadings used in this study, the EPNCs with 1 wt(%) showed the maximum improvement in IS and IE, around 78%(IE)-89%(IS) for DDM and 82%(IS)-93%(IE) for DDSA + MNA. EPNCs with 1 wt(%) cured with DDM present the best results for IS and IE, when compared with EPNCs cured with DDSA + MNA. IS and IE of EPNCs highly reduce at 3-5 wt(%). (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：26 / 32

页数：7

共 51 条

[1]

Ai NA., 2015, Chem Mater Res, V7, P34

[2] Effect of irregular shaped nanoalumina on the enhancement of mechanical properties of epoxy resin nanocomposites using DDM as hardener [J].

Amaro, Ana M. ;

Bernardo, Luis ;

Pinto, Deesy G. ;

Lopes, Sergio ;

Rodrigues, Joao ;

Louro, Cristina S. .

COMPOSITES PART B-ENGINEERING, 2016, 84 :17-24

[3]

[Anonymous], 2010, ISO1791, P22

[4] Toughenability of polymers [J].

Argon, AS ;

Cohen, RE .

POLYMER, 2003, 44 (19) :6013-6032

[5] MECHANICAL RELAXATION STUDIES OF CURE OF EPOXY RESINS .1. MEASUREMENT OF CURE [J].

ARRIDGE, RGC ;

SPEAKE, JH .

POLYMER, 1972, 13 (09) :443-&

[6] A phenomenological constitutive law for the nonlinear viscoelastic behaviour of epoxy resins in the glassy state [J].

Bardella, L .

EUROPEAN JOURNAL OF MECHANICS A-SOLIDS, 2001, 20 (06) :907-924

[7]

Bardella L., 2000, Mechanical Behavior of Glass-Filled Epoxy Resins: Experiments, Homogenization Methods for Syntactic Foams, and applications

[8] Two features of the uniaxial compression of a glassy epoxy resin: the yield stress rate-dependence and the volumetric instability [J].

Bardella, Lorenzo ;

Belleri, Andrea .

MECHANICS OF TIME-DEPENDENT MATERIALS, 2011, 15 (03) :255-275

[9]

Boyle M.A., 2001, Epoxy Resins

[10]

Chozhan CK, 2014, POLYM PLASTICS TECHN, V54

← 1 2 3 4 5 6 →