The mechanical properties, thermal behaviour, and spectral characteristics of polydimethylsiloxane (PDMS) composites utilising a nonwoven polyetherimide (PEI) veil with SrAl₂O₄:Eu²⁺, Dy³⁺ (SAOED) phosphors have been investigated. Elasto-mechanoluminescence (EML) was characterised by observing the light emission under cyclic displacement testing. EML/PEI veil composites were fabricated in a scaled-down size according to ASTM D412-16 and showed improving mechanical properties compared to PEI veil with PDMS and bare PDMS. During cyclic displacement testing, the thermal temperature of EML/PEI veil composites varies according to the strain energy stored upon deformation around the interface area. The spectral data, i.e. light intensity and wavelength, were observed to increase at the maximum extended deformation of the SAOED embedded in the PEI veil within the PDMS composite. Micron-sized luminescent phosphors, SAOED, within the composites were studied by scanning electron microscopy, rheology, and nanoindentation tests. These techniques were employed to investigate the surface morphology, viscoelastic behaviour during the curing process, and hardness and elastic modulus, respectively, of the SAOED-PDMS. Halpin-Tsai and Mori-Tanaka micromechanical models were used to study the interphase effect as a function of thickness and elastic modulus, by correlating the properties of the filler and matrix. The interphase elastic modulus is introduced as a function of the interphase volume fraction and the ratio of filler modulus. The Mori-Tanaka model is in relatively good agreement with the experimental Young's modulus due to the average internal stress in a matrix material containing inclusions with eigenstrains.

研究了使用具有SrAl ₂ O ₄：Eu ₂ ⁺，Dy ³⁺（SAOED）荧光粉的非织造聚醚酰亚胺（PEI）面纱的聚二甲基硅氧烷（PDMS）复合材料的机械性能，热性能和光谱特性。弹性机械发光（EML）的特征是观察循环位移测试下的发光。EML / PEI面纱复合材料根据ASTM D412-16按缩小尺寸制造，与具有PDMS和裸PDMS的PEI面纱相比，机械性能得到改善。在循环位移测试过程中，EML / PEI面纱复合材料的热温度会根据在界面区域附近变形时存储的应变能而变化。光谱数据，即观察到光强度和波长在嵌入PDMS复合材料内PEI面膜的SAOED的最大扩展变形时增加。通过扫描电子显微镜，流变学和纳米压痕测试研究了复合材料中的微米级发光荧光粉SAOED。这些技术分别用于研究SAOED-PDMS的表面形态，固化过程中的粘弹性行为以及硬度和弹性模量。使用Halpin-Tsai和Mori-Tanaka微力学模型，通过关联填料和基体的特性，研究相间效应随厚度和弹性模量的变化。引入相间弹性模量作为相间体积分数和填料模量比的函数。