Polyethylene terephthalate (PET) composites containing micro‐ and nanoglass flakes were prepared by melt blending. The percentage of nanoglass flakes was varied from 0.5, 1, 2, and 3 wt% and the concentration of microglass flakes was 1, 3, and 5 wt%. The effect of glass flake on morphology, physical, mechanical, and thermal properties of PET was studied using scanning electron microscopy (SEM), energy‐dispersive X‐ray analysis (EDXA), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), dynamic mechanical thermal analysis (DMTA), X‐ray diffraction (XRD), and tensile test. The observations showed that both types of particles were dispersed in PET, homogeneously, though microglass flakes had better dispersion compared with their nanosized counterparts. According to DSC thermogram, the crystallization rate and temperature of PET increased with incorporation of both types of glass flakes. The crystallization rate of PET was increased from 31.41% to 34.25% with the addition of 1 wt% of nanoglass flakes. Moreover, the onset of thermal degradation increased more than 9°C with the addition of micro‐ and nanoglass flakes. Based on the mechanical viewpoint, the Young's modulus of PET was improved by the addition of both micro‐ and nanoglass flakes. On the other hand, the tensile strength of PET was decreased from 45.4 MPa to 31.3 MPa using 1 wt% of nanoglass flakes. According to X‐ray diffractometry, using of micro‐ and nanoglass flakes resulted in the decrement of PET crystallites. Whereas, the size of crystallites was lower than microglass flakes, in the case of using nanoglass flakes. J. VINYL ADDIT. TECHNOL., 26:380–389, 2020. © 2019 Society of Plastics Engineers

中文翻译：

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微米和纳米玻璃薄片填充的聚对苯二甲酸乙二酯的物理，机械和热性能的综合研究

通过熔融共混制备含有微玻璃和纳米玻璃薄片的聚对苯二甲酸乙二酯（PET）复合材料。纳米玻璃鳞片的百分比在0.5、1、2和3wt％之间变化，并且微玻璃鳞片的浓度为1、3和5wt％。使用扫描电子显微镜（SEM），能量色散X射线分析（EDXA），热重分析（TGA），差示扫描量热法（DSC）研究了玻璃鳞片对PET的形态，物理，机械和热性能的影响，动态机械热分析（DMTA），X射线衍射（XRD）和拉伸试验。观察结果表明，两种类型的颗粒均一地分散在PET中，尽管微玻璃片相比其纳米级颗粒具有更好的分散性。根据DSC热分析图，两种类型的玻璃鳞片的结合都会增加PET的结晶速率和温度。通过加入1重量％的纳米玻璃薄片，PET的结晶速率从31.41％增加到34.25％。此外，加入微米级和纳米级玻璃鳞片后，热降解的开始时间增加了9°C以上。基于机械观点，通过添加微玻璃和纳米玻璃薄片可以提高PET的杨氏模量。另一方面，使用1重量％的纳米玻璃薄片，PET的拉伸强度从45.4MPa降低到31.3MPa。根据X射线衍射法，使用微米级和纳米级玻璃片会导致PET微晶的减少。而在使用纳米玻璃片的情况下，微晶的尺寸小于微玻璃片。J.乙烯基添加物。TECHNOL。，26：380–389，