Liquid, hybrid UV/vis radiation curable resin compositions for additive fabrication
申请人:DSM IP ASSETS B.V.
公开号:US10400057B2
公开(公告)日:2019-09-03
Described herein are thermoset compositions suitable for hybrid polymerization when processed via additive fabrication equipment utilizing sources of actinic radiation with peak spectral intensities in the UV and/or visible region containing a photoinitiating package, a cationically curable constituent, a free-radically curable component, and optionally, one or more additives. Such thermoset compositions preferably contain a Norrish Type I photoinitiator that is an alkyl-, aryl-, or acyl-substituted compound centered around a Group 14 atom, and further possesses specified ranges of ionization potential values with respect to its known triplet state. Also disclosed are methods of creating three-dimensional parts via additive fabrication processes utilizing sources of actinic radiation with peak spectral intensities in the UV and/or visible regions employing the claimed thermosetting compositions, along with the parts cured therefrom.
本文所描述的热固性组合物在通过利用峰值光谱强度在紫外区和/或可见光区的放 射辐射源的添加剂制造设备进行加工时,适用于杂化聚合,其中包含光引发包、阳离子固 化成分、自由基固化成分以及可选的一种或多种添加剂。这种热固性组合物最好含有诺里什 I 型光引发剂,该引发剂是以 14 族原子为中心的烷基、芳基或酰基取代的化合物,并且相对于其已知的三重态而言,具有指定范围的电离势值。本发明还公开了利用在紫外和/或可见光区域具有峰值光谱强度的光辐射源,通过添加式制造工艺制造三维部件的方法,该方法采用了所声称的热固性组合物,以及由此固化的部件。