Monitoring of seawater immersion degradation in glass fibre reinforced polymer composites using quantum dots

被引：65
作者：
Fang, Yuan [1 ]
Wang, Kai [1 ]
Hui, David [2 ]
Xu, Fujun [3 ]
Liu, Weiqing [4 ]
Yang, Shulan [1 ]
Wang, Lu [1 ]
机构：
[1] Nanjing Tech Univ, Coll Civil Engn, Nanjing 211816, Jiangsu, Peoples R China
[2] Univ New Orleans, Dept Mech Engn, New Orleans, LA 70124 USA
[3] Donghua Univ, Coll Text, Shanghai 201620, Peoples R China
[4] Nanjing Tech Univ, Adv Engn Composites Res Ctr, Nanjing 211816, Jiangsu, Peoples R China
来源：
COMPOSITES PART B-ENGINEERING | 2017年 / 112卷
基金：
中国国家自然科学基金;
关键词：
Glass fibres; Polymer-matrix composites (PMCs); Environmental degradation; Optical properties techniques; MECHANICAL-PROPERTIES; MOISTURE DIFFUSION; INTERFACIAL PROPERTIES; DURABILITY; WATER; ABSORPTION; DAMAGE; INFRASTRUCTURE; ENVIRONMENTS; EXPOSURE;
D O I：
10.1016/j.compositesb.2016.12.043
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper, a simple and innovative method is proposed to monitor the effects of seawater ageing in glass fibre reinforced polymer (GFRP) composites using quantum dots (QDs). The cadmium sulfide (CdS) QDs modified with 3-(trimethoxysilyl)-1-propanethiol (MPS) were firstly synthesized, and then the modified CdS QDs were labeled on the glass fibre by chemical bond. GFRP composites with QDs at the interface between the fibre and matrix were obtained. The sigle-fibre-fragment tests of specimens were done to verify the modified CdS QDs did not affect the interfacial bonding of the matrix and fiber. The effects of seawater ageing on the adhesion behaviour between the fibre and the matrix of QD/GFRP hybrids were investigated based on confocal fluorescence microscopy images. After 6 months of immersion in seawater, the glass transition temperature (Tg), tensile strength, and flexural strength of specimens decreased 2.5%, 13.8%, and 9.8%, respectively. Furthermore, the thermal and mechanical properties of specimens can be calculated by the fluorescence intensity quantificationally. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：93 / 102
页数：10
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