Advanced Materials Manufacturing
Supercritical CO2 Aerogel Drying & Mold Calculator
Determine autoclave pressure vessel operating envelopes, depressurization rate limits ($\Delta P/\Delta t$) to prevent capillary cracking, and mold cavity shrinkage scale factors ($F_{ ext{mold}}$).
Process Parameters & Inputs
Finished dry tile dimension after complete extraction and solvent drying.
Isotropic solid network shrinkage during solvent exchange and depressurization.
Total internal volume of high-pressure supercritical CO2 autoclave.
Supercritical holding pressure (CO2 critical point: 73.9 bar, 31.1°C).
Slow venting duration from supercritical state to ambient atmospheric pressure.
Solid thickness of wet alcogel slab in perforated cassette mold.
Calculated Engineering Metrics
Mold Cavity Dimension
163.9mm
Depressurization Rate
0.42bar/min
Capillary Stress Index
Safe(Zero Meniscus)
CO2 Mass Turnover
9.8kg CO₂
Toolpath & Geometry Simulation
Engineering Reference:
→ Read the Supercritical CO2 Aerogel Drying & Mold Vector Prepress Guide
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Supercritical CO2 extraction dries alcogels without phase boundary meniscus formation, eliminating liquid surface tension and preventing pore collapse in nanoporous aerogel networks.
Isotropic Mold Scaling & Depressurization Rate
The pre-shrinkage mold cavity size L_mold and safe venting rate follow:
L_mold = L_target / (1 - (S_L / 100))Delta_P / Delta_t = (P_oper - 1.0) / (t_vent * 60)
Perforated cassette molds allow uniform bi-directional supercritical diffusion while mechanically confining monolithic slab geometry.