缩水甘油醚
环氧树脂
材料科学
化学工程
纳米颗粒
聚合物
盐雾试验
脲醛
核化学
聚合
乳状液
乳液聚合
腐蚀
高分子化学
双酚A
复合材料
化学
纳米技术
胶粘剂
图层(电子)
工程类
作者
W. Taylor Adams,Bryce Brechin,Thanh-Tam Truong
出处
期刊:Polymer Testing
[Elsevier]
日期:2024-02-01
卷期号:131: 108328-108328
被引量:1
标识
DOI:10.1016/j.polymertesting.2024.108328
摘要
Radiation-resistant poly(urea-formaldehyde) (PUF) microcapsules with a bisphenol A diglycidyl ether/butyl glycidyl ether core were prepared via emulsion polymerization. Tungsten oxide (WO3) nanoparticles were incorporated into the polymer shell to improve radiation resistance of the resultant PUF microcapsules. Microcapsules prepared with modified WO3 nanoparticles had an average diameter of 117 μm, an encapsulation efficiency of 48%, and evenly dispersed nanoparticle incorporation of 3.5 wt%. Modification of dense WO3 nanoparticles was necessary for even dispersion into PUF microcapsule shells. The corrosion protection properties of epoxy films cast on mild steel were demonstrated via scratching and exposure to salt solution. Films containing modified WO3 fortified microcapsules demonstrated self-healing and retained corrosion protection properties. Under gamma irradiation, WO3/PUF microcapsules exhibited less degradation of epoxy healing core compared to microcapsules that were not fortified with WO3.
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