论文部分内容阅读
从细观力学角度研究刚性粒子高度填充聚合物的内应力形成机理 ,用扫描电镜对这类材料的损伤作细观观察 .由电镜看到 ,材料的初始损伤对拉伸破坏影响很大 ,在拉伸断口处 ,沿晶断裂与穿晶断裂同时发生 ,粘结剂发生大拉伸变形 .结果表明 ,所试材料的粘结相和颗粒相匹配比较好 ,具有一定的韧性断裂特性 ;刚性粒子高度填充聚合物是与初始损伤相关的粘弹性体
From the perspective of meso-mechanics, the mechanism of internal stress formation of highly filled rigid polymer particles was studied, and the damage of these materials was observed by scanning electron microscopy (SEM) .From the electron microscope, the initial damage of the material had a great influence on the tensile failure. Tensile fracture, intergranular fracture and transgranular fracture occur at the same time, and the adhesive undergoes large tensile deformation.The results show that the bonding phase and the particle of the tested material match well, and have certain ductile fracture characteristics; the rigid particles Highly-filled polymers are visco-elastic bodies that are associated with initial damage