Free radical scavenging behavior of multidimensional nanomaterials in γ-irradiated epoxy resin and mechanical and thermal performance of γ-irradiated composites

被引：13

作者：

Liu, Yi ^{[1
]}

Zhang, Shiqing ^{[1
]}

Pei, Xiaoyuan ^{[1
]}

Shi, Haiting ^{[1
]}

Li, Diansen ^{[2
]}

Xu, Zhiwei ^{[1
]}

Li, Shufeng ^{[1
]}

Xue, Yanling ^{[3
]}

Song, Leilei ^{[4
]}

机构：

[1] Tiangong Univ, Sch Text Sci & Engn, Key Lab Adv Braided Composites, Minist Educ, Tianjin 300387, Peoples R China

[2] Beijing Univ Aeronaut & Astronaut, Sch Chem, Key Lab Bioinspired Smart Interfacial Sci & Techn, Minist Educ, Beijing 100191, Peoples R China

[3] Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China

[4] AECC Aegis Adv Protect Technol Co Ltd, Erwei Rd, Tianjin 300399, Peoples R China

来源：

COMPOSITES PART C: OPEN ACCESS | 2021年 / 4卷

基金：

中国国家自然科学基金;

关键词：

Nanoparticles; Epoxy resin; gamma-Ray irradiation; Radiation resistance; Free radical; CARBON NANOTUBES; GRAPHENE OXIDE; RADIATION-RESISTANCE; HALLOYSITE NANOTUBES; DAMAGE MECHANISM; POLYMER; NANOCOMPOSITES; NEUTRON; BLACK; OPTIMIZATION;

D O I：

10.1016/j.jcomc.2020.100095

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

In order to explore the scavenging ability of free radicals in polymers and the derivation mechanism with the different influence of the composition and various structure of nanomaterials, two-dimensional graphene oxide, one-dimensional carbon nanotubes and zero-dimensional carbon black in carbon nanomaterials, and halloysite nanotubes in silicate nanomaterials were selected to carry out a task. The results manifest that the content of free radicals produced by gamma-ray irradiation in epoxy resin reduced because of the introduction nanoparticle. Among them, the epoxy resin reinforced by graphene oxide has the least free radical, followed by carbon nanotubes, halloysite nanotubes and carbon black, respectively. The analysis shows that the free radical scavenging capability was significantly different in variety types of nanomaterials. The free radical scavenging ability of carbon nanomaterials is ascribed to its well-organized honeycomb lattice, which is different from the fact that silicate nanomaterials is attributed to its electron acceptor sites. Meanwhile, the stable electron cloud was formed in the carbon nanomaterials, which is more conducive to eliminate the free radicals. The addition of nanomaterials decreases the number of free radicals in the resin, and correspondingly weakens the damage of free radicals for the resin, resulting in improving the thermal stability and mechanical properties of the epoxy resin.

引用

页数：11