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UV resistibility of a nano-ZnO/glass fibre reinforced epoxy composite

机译:纳米ZnO /玻璃纤维增​​强环氧复合材料的抗紫外线性能

摘要

The harmfulness of ultraviolet (UV) radiation (UVR) to human health and polymer degradation has been the focus recently in all engineering industries. A polymer-based composite filled with nano-ZnO particles can enhance its UV resistibility. It has been found that the use of appropriate amount of nano-ZnO/Isopropyl alcohol solvent to prepare a UV resistant nano-ZnO/glass fibre reinforced epoxy (ZGFRE) composite can effectively block the UV transmission with negligible influence on the crystal structure of its resin system. This paper aims at investigating the interfacial bonding behaviour and UV resistibility of a ZGFRE composite. The solvent effect in relation to the dispersion properties of ZnO in the composite is also discussed. XRD results indicated that 20. wt% Isopropyl alcohol was an effective solvent for filling nano-ZnO particles into an epoxy. SEM examination also showed that the bonding behaviour between glass fibre and matrix was enhanced after filling 20. wt% nano-ZnO particles with 20. wt% Isopropyl alcohol into the composite. Samples filled with 20. wt% nano-ZnO/Isopropyl alcohol and 40. wt% nano-ZnO/Isopropyl alcohol has full absorption of UVA (315-400. nm), UVB (280-315. nm) and a part of UVC (190-280. nm).
机译:紫外线(UVR)对人体健康和聚合物降解的危害已成为所有工程行业的焦点。填充有纳米ZnO颗粒的聚合物基复合材料可以增强其抗紫外线性。已经发现,使用适量的纳米ZnO /异丙醇溶剂制备抗紫外线的纳米ZnO /玻璃纤维增​​强环氧树脂(ZGFRE)复合材料可以有效地阻止紫外线透过,对其晶体结构的影响可以忽略不计。树脂体系。本文旨在研究ZGFRE复合材料的界面粘结行为和抗紫外线性能。还讨论了溶剂效应与ZnO在复合材料中的分散性能有关。 XRD结果表明20重量%的异丙醇是用于将纳米ZnO颗粒填充到环氧树脂中的有效溶剂。 SEM检查还表明,在复合物中填充20. wt%的异丙醇后,玻璃纤维与基体之间的粘结行为得到了增强。填充有20. wt%的纳米ZnO /异丙醇和40. wt%的纳米ZnO /异丙醇的样品对UVA(315-400。nm),UVB(280-315。nm)和部分UVC具有完全吸收(190-280.nm)。

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