3D‐printable thermochromic acrylic resin with excellent mechanical performance

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Abstract

ABSTRACT This study demonstrated the feasibility of printing three‐dimensional (3D) hybrid objects based on acrylic photocurable formulations, with an additional function of thermochromic (TC) performance. In fact, directly mixing TC pigments into an acrylic resin (AR), led to a decrease of the mechanical properties like tensile strength and elongation. In order to address this problem, TC was modified by γ‐methacryloxypropyltrimethoxysilane before added into an AR (modified thermochromic [mTC] pigment). Compared with pure AR and TC/resin composite structures (TC/AR), the final mTC/acrylic resin (mTC/AR) exhibited a better performance of tensile strength and Young's modulus. Besides, they could be successfully fabricated into 3D structures by stereolithography method. More interestingly, mTC/AR 3D composite structures demonstrated a unique tunable TC property, which could be responsive to external temperature fields reversely. Thus, their TC property could find novel applications in smart temperature sensor technology, and other related technological applications. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020 , 137 , 48277.

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