Kohoutová Eliška, Hájková Pavlína, Kohout Jan, Soukup Aleš
ORLEN UniCRE, a.s., Revoluční 1521/84, 40001 Ústí nad Labem, Czech Republic.
Department of Material Science, Faculty of Mechanical Engineering, Technical University of Liberec, Studentská 1402/2, 461 17 Liberec, Czech Republic.
Materials (Basel). 2021 Dec 22;15(1):61. doi: 10.3390/ma15010061.
Six matrices based on alkali-activated aluminosilicate with different amounts of potassium phosphate were prepared for the production of six-layer composite plates. The addition of potassium phosphate in the matrix was 2 wt%, 4 wt%, 6 wt%, 8 wt% and 10 wt% of its total weight. The matrix without the potassium phosphate was also prepared. The aim of this study was to determine whether this addition has an effect on the tensile strength or Young's modulus of composites at temperatures up to 800 °C. Changes in the thickness and weight of the samples after this temperature were also monitored. Carbon plain weave fabric was chosen for the preparation of the composites. The results show that under normal conditions, the addition of potassium phosphate has no significant effect on the mechanical properties; the highest measured tensile strengths were around 350 MPa. However, at temperatures of 600 °C and 800 °C the addition of potassium phosphate had a positive effect, with the tensile strength of the composites being up to 300% higher than the composites without the addition. The highest measured values of composites after one hour at 600 °C were higher than 100 MPa and after 1 h at 800 °C higher than 85 MPa.
制备了六种基于碱激活硅铝酸盐且含有不同含量磷酸钾的基体，用于生产六层复合板。基体中磷酸钾的添加量分别为其总重量的2 wt%、4 wt%、6 wt%、8 wt%和10 wt%。还制备了不含磷酸钾的基体。本研究的目的是确定这种添加对温度高达800℃时复合材料的拉伸强度或杨氏模量是否有影响。在此温度后还监测了样品厚度和重量的变化。选择了碳纤维平纹织物来制备复合材料。结果表明，在正常条件下，磷酸钾的添加对力学性能没有显著影响；测得的最高拉伸强度约为350MPa。然而，在600℃和800℃的温度下，磷酸钾的添加产生了积极影响，复合材料的拉伸强度比未添加的复合材料高出300%。在600℃下1小时后复合材料的最高测量值高于100MPa，在800℃下1小时后高于85MPa。
