Method for the production of composite materials using magnetic nano-particles to orient reinforcing particles and reinforced materials obtained using the method
申请人:ETH Zurich
公开号:EP2371522A1
公开(公告)日:2011-10-05
A method for making a composite material with non-spherical reinforcing particles embedded in a matrix, is disclosed. In this method, in a first step magnetic and/or superparamagnetic nanoparticles are attached to the non-spherical reinforcing particles, in a second step the resulting reinforcing particles are introduced into a liquid matrix material and/or a liquid matrix-precursor material, and in a third step the material of the matrix is solidified and/or polymerized and/or cross-linked. In accordance with the proposed invention prior to and/or during solidification and/or polymerization and/or cross-linking of the matrix material or the matrix precursor material, respectively, a magnetic field is applied so as to align the reinforcing particles in the matrix and this alignment is fixed in the matrix during and after the third step, wherein the non-spherical reinforcing particles preferably have a length (1) in one dimension of at least 0.5 µm and wherein the weight ratio of the nano-particles to the non-spherical reinforcing particles is below 0.25.
本发明公开了一种在基体中嵌入非球形增强粒子的复合材料制造方法。在该方法中,第一步将磁性和/或超顺磁性纳米颗粒附着在非球形增强颗粒上,第二步将得到的增强颗粒引入液态基体材料和/或液态基体前驱体材料中,第三步使基体材料固化和/或聚合和/或交联。根据本发明的建议,在基体材料或基体前驱体材料分别固化和/或聚合和/或交联之前和/或期间,施加磁场以使增强粒子在基体中排列,并且在第三步期间和之后,这种排列固定在基体中,其中非球形增强粒子最好在一个维度上的长度(1)至少为 0.5 µm,并且纳米粒子与非球形增强粒子的重量比低于 0.25。