热带气候下自然风化对辐射固化涂料表面形态和物理化学特性的影响

R. Tajau, MS Alias, MH Harun, NH Mudri, FF Hilmi, SM Faisal, RC Ismail, AM Sani, Crc Hak, WS Paulus, BC Jong, Pwy Liew
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引用次数: 0

摘要

这项研究的目的是发现自然风化对棕榈油基和石化基薄膜涂层的影响。薄膜涂层是通过交联辐射固化法制备的。开发了三种含有 TiO2 纳米粒子的棕榈油基树脂:EPOLA、EPOLA-OPV 和 POBUA。为了比较天然涂料和合成涂料的性能,还开发了石化基涂料。涂层在 0°、45° 和 90° 不同角度的自然风化条件下暴露长达 60 天。研究了自然风化条件对涂层表面形态、物理化学和挠曲特性的影响,以及褪色目测和测试试样上霉菌或真菌生长的影响。结果表明,由于光氧化反应和真菌的存在,自然风化暴露会导致涂层的聚合物网络结构严重褪色和劣化。总体而言,棕榈油基涂料的劣化速度比石油基涂料慢,尤其是在 90° 角处。这项研究表明,以生物资源为基础的棕榈油因其优于合成涂料的品质,在室内木器清漆的应用中具有很大的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Natural weathering effects on the surface morphological and physicochemical properties of radiation curable coatings in tropical climate
The purpose of this research is to discover the effects of natural weathering on palm oil-based and petrochemical-based film coatings. The film coatings were prepared using the radiation curing approach via cross-linking. Three palm oil-based resins with TiO2 nanoparticle loading were developed: EPOLA, EPOLA-OPV, and POBUA. The petrochemical-based coatings were also developed to compare the performance of natural and synthetic coatings. The coatings were exposed to natural weathering for up to 60 days at varied angles of 0°, 45°, and 90°. The effect of natural weathering conditions on the surface morphological, physiochemical, and also flexural characteristics of coatings, as well as the discoloration visual inspection and the growth of mould or fungus on the tested specimen, was studied. The results showed that natural weathering exposure induced severe discoloration and deterioration of the polymer network structure of the coatings due to photo-oxidation reaction and the presence of fungi. Overall, palm oil-based coatings deteriorate slower than petroleum-based coatings, especially at a 90° angle. This study indicated that bioresources-based palm oil has a significant potential for interior wood varnish applications due to its superior qualities over synthetic-based coatings.
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