The expansion of 3D printing into rapid manufacturing applications and the strong market demand for next-generation oligomers coincides with an increased demand for materials with a wide range of physical properties.Rigid materials with high tensile strength and low elongation are readily available, but the supply of resilient, flexible materials with high elongation is limited.
In a new study and white paper, the role of novel oligomers in the formulation of free radical curing acrylate and the mixture of free radical/cationic curing acrylate/epoxy was studied.The mechanical and thermal properties of the formula were also revealed.
The purpose of this study had two major goals. The first was to evaluate the mechanical properties of newly developed (meth)acrylate oligomers that have the potential to meet the demand for tough, flexible 3D printing materials. This assessment includes comparisons with materials currently marketed as tough or flexible.
The second objective is to identify a method for assessing the ability of oligomers to resist forces acting on parts during printing. This resistance, in turn, has to do with printability or the likelihood of a successful print result.The change of relative conversion of methacrylate and composite modulus during curing was investigated. These methods are used to assess how quickly the green state properties of the material are achieved and whether these properties meet the minimum threshold required in the printing process.