The effect of temperature on the physicochemical and mechanical properties of pigmented Sty/nBA/MMA emulsion polymers containing synthetic organic pigments was studied. Thin films of artist's commercial paints from Liquitex (U.S.A.) and Rembrandt (NL) containing Azo yellow (PY3), diketopyrrolopyrrole red (PR264), phthalocyanine blue (PB15) and phthalocyanine green (PG7) were naturally dried and subjected to moderate artificial ageing at 60 °C and 55% RH and artificial soiling, to simulate thermally aged paints exposed to heat, humidity and dirt deposition. The changes in the paints' surface morphology were studied by Optical Microscopy (OM), Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM). Pyrolysis-Gas Chromatography/Mass Spectrometry (Py-GC/MS), Fourier Transform Infrared Spectroscopy in ATR mode (FTIR-ATR) and Differential Scanning Calorimetry (DSC) were used for their physicochemical characterization. In addition, mechanical testing was performed to investigate variations of the tensile properties. The study allowed the detection of deterioration patterns and defects, which include micro wrinkling and roughening of the surface due to the exposure of the inorganic fillers. Additionally, the extent of soil particles' penetration was observed to be dependent on the type and the mobility of the surfactant during and post artificial ageing. Physicochemical changes include increase of the polymer's T_g and decrease of the overall paint's physical and mechanical stability. Certain observations regarding the interaction of the components within the paint and the resultant resistance to thermal and mechanical stresses are discussed.

研究了温度对含合成有机颜料的有色Sty / nBA / MMA乳液聚合物的物理化学和机械性能的影响。自然干燥来自Liquitex（美国）和伦勃朗（NL）的艺术家商业涂料的薄膜，其中含有偶氮黄（PY3），二酮吡咯并吡咯红（PR264），酞菁蓝（PB15）和酞菁绿（PG7），并在110℃进行适当的人工老化60°C和55％RH和人工污染，以模拟暴露在热，湿气和污垢沉积下的热老化涂料。通过光学显微镜（OM），扫描电子显微镜（SEM）和原子力显微镜（AFM）研究了涂料表面形态的变化。热解-气相色谱/质谱（Py-GC / MS）ATR模式下的傅立叶变换红外光谱（FTIR-ATR）和差示扫描量热法（DSC）用于其物理化学表征。另外，进行了机械测试以研究拉伸性能的变化。该研究可以检测出劣化图案和缺陷，包括由于无机填料的暴露而导致的微皱和表面粗糙。另外，观察到土壤颗粒渗透的程度取决于人工老化期间和之后表面活性剂的类型和迁移率。物理化学变化包括聚合物T的增加 该研究可以检测出劣化图案和缺陷，包括由于无机填料的暴露而导致的微皱和表面粗糙。另外，观察到土壤颗粒渗透的程度取决于人工老化期间和之后表面活性剂的类型和迁移率。物理化学变化包括聚合物T的增加 该研究可以检测出劣化图案和缺陷，包括由于无机填料的暴露而导致的微皱和表面粗糙。另外，观察到土壤颗粒渗透的程度取决于人工老化期间和之后表面活性剂的类型和迁移率。物理化学变化包括聚合物T的增加_g降低整体涂料的物理和机械稳定性。讨论了有关涂料中各组分之间的相互作用以及由此产生的抗热应力和机械应力的某些观察结果。