Fig. 3: Thermal curing enthalpy comparison between vacuum-exposed and non-vacuum-exposed photopolymer resins.
From: Screening of liquid photopolymer resins exposed to high-vacuum
a–d Differential scanning calorimetry (DSC) heat-flow curves of photopolymer resins measured as a function of temperature. a Shows Delo Katiobond GE680, b Delo Katiobond OB678, c Polymer-G EPV9511, and d Loctite AA3301 LC. Exothermic heat flow is plotted in the downward direction. Dashed black lines represent reference measurements of fully cured resins after the second heating cycle. Solid blue lines indicate the average response of non-vacuum-exposed samples, and solid orange lines indicate the average response of vacuum-exposed samples. In panel (d), thin colored lines show individual DSC measurements of non-vacuum-exposed (i2–i5) and vacuum-exposed (vi2–vi5) samples, while thicker lines represent the corresponding averaged curves.
