Beckman Institute for Advanced Science and Technology, Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.
Beckman Institute for Advanced Science and Technology, Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, United States.
ACS Macro Lett. 2022 Sep 20;11(9):1097-1101. doi: 10.1021/acsmacrolett.2c00393. Epub 2022 Aug 23.
Two frontal polymerization (FP) mechanisms, frontal ring-opening metathesis polymerization (FROMP) of dicyclopentadiene and frontal radical polymerization (FRaP) of benzyl acrylate and hexanediol diacrylate, were combined for rapid manufacturing of welded thermoset materials. Leveraging the immiscibility of the two different FP resins, welded thermosets and gradient foams of varying composition were achieved by switching of FP mechanisms. The adhesion strength of the welded thermoset materials differed depending on the originating mechanism. Finally, welded thermoset foams of varying porosity and homogeneity were generated through initiation from the bottom of the two resins.
两种前沿聚合（FP）机制，二环戊二烯的前沿开环复分解聚合（FROMP）和苯丙烯酸酯及己二醇二丙烯酸酯的前沿自由基聚合（FRaP），被结合用于快速制造焊接热固性材料。利用两种不同 FP 树脂的不混溶性，通过 FP 机制的切换，实现了焊接热固性材料和不同组成的梯度泡沫。焊接热固性材料的粘附强度取决于起始机制。最后，通过从两种树脂的底部引发，生成了具有不同孔隙率和均一性的焊接热固性泡沫。
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