Development of self-healing polymers via amine-epoxy chemistry: II. Systematic evaluation of self-healing performance

被引：33

作者：

Zhang, He ^{[1
]}

Yang, Jinglei ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore

来源：

SMART MATERIALS AND STRUCTURES | 2014年 / 23卷 / 06期

关键词：

self-healing polymer; fracture toughness; healing efficiency; thermal analysis; fractography; FIBER-REINFORCED POLYMER; FRACTURE-TOUGHNESS; MICROVASCULAR NETWORKS; MECHANICAL-PROPERTIES; CURING AGENT; COMPOSITES; IMPACT; RESIN; DAMAGE; BEHAVIOR;

D O I：

10.1088/0964-1726/23/6/065004

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Part I of this study (H Zhang and J Yang 2014 Smart Mater. Struct. 23 065003) reported the preparation and characterization of epoxy microcapsules (EP-capsules) and amine loaded hollow glass bubbles (AM-HGBs), and the modeling of a two-part self-healing system. In part II, the self-healing performance of this material system is systematically investigated. Various factors including the ratio, the total concentration and the size of the two carriers are studied as well as the healing temperature and the post heat treatment process. The best healing performance is obtained at a ratio of 1: 3 of EP-capsules to AM-HGBs. It is observed that a higher concentration of larger carriers, together with a higher healing temperature, enables better healing behavior. Healing efficiency of up to 93% is obtained in these systems. In addition, post heat treatment decreases the healing efficiency due to stoichiometric mismatch of healing agents caused by leakage of amine in the HGBs at elevated temperature.

引用

页数：10

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