{"schema_version":1,"experiment_id":"eoa_inverse_innovation_exp12_substrate_denial72_20260805","cell_id":"disequilibrium_leverage_and_dissipation_management__chemistry_materials","arm":"CONSTRAINED_HIGH","candidate_id":"disequilibrium_leverage_and_dissipation_management__chemistry_materials__CONSTRAINED_HIGH","decision":"PROPOSAL","abstention_reason":null,"proposal":{"schema_version":1,"experiment_id":"eoa_inverse_innovation_exp12_substrate_denial72_20260805","cell_id":"disequilibrium_leverage_and_dissipation_management__chemistry_materials","arm":"CONSTRAINED_HIGH","candidate_id":"disequilibrium_leverage_and_dissipation_management__chemistry_materials__CONSTRAINED_HIGH","proposal_index":1,"version":0,"title":"Distributed phase-change microcapsules as a passive exotherm flywheel for thick thermoset cure","problem":"A thick thermoset casting can remain kinetically sluggish before cure begins yet generate a short, internally trapped heat pulse after initiation. The core can then become hotter and cure sooner than the boundary, while later cooling can arrest conversion in colder regions. Simply supplying more external heat can worsen the core excursion. The concrete problem is completing cure across a thick epoxy casting without exposing its core to an excessive temperature excursion or leaving its boundary undercured.","actors":["Uncured epoxy resin and hardener","Distributed encapsulated phase-change material","Casting core and boundary regions","Heat-conducting mold and ambient heat sink","Materials technician responsible for laboratory preparation and containment"],"observable_state":"Embedded thermocouples show the center-to-boundary temperature difference and peak-to-tail temperature history; differential scanning calorimetry on sectioned specimens shows residual reaction enthalpy; dynamic mechanical analysis or an equivalent material test shows spatial variation in cured state. The relevant disequilibrium is present when reaction-generated heat raises internal regions through the phase-change interval while the mold-facing regions remain cooler, followed by a declining-temperature period in which cure is incomplete.","consequence":"An unmanaged exothermic pulse can produce localized thermal degradation, gas or void formation, residual-stress gradients, cracking, or a core-to-boundary conversion disparity. Excessive damping, however, can suppress the temperature needed to complete cure. The material therefore needs temporary heat absorption followed by timely heat return, not merely permanent cooling.","affected_objective":"Obtain an acceptably uniform cured state through the casting while keeping every region inside a predefined material-temperature window and without depending on an active software-controlled thermal cycle for the essential effect.","intervention":"Disperse a bounded volume fraction of chemically isolated phase-change microcapsules in the thermoset. Use a blend whose melting transitions span the upper portion of the permitted cure-temperature band. During the rising exotherm, capsule melting absorbs heat as latent heat and damps the peak. As reaction rate falls and the casting cools, capsule crystallization releases part of the stored heat locally, extending the kinetically useful tail of the cure. A conductive mold remains the terminal sink for heat that cannot be productively returned. Capsule fraction, transition temperatures, latent capacity, shell compatibility, and casting thickness are fixed before mixing; thermocouples and calorimetry are evidence and safety instruments rather than control inputs.","structural_mapping":[{"archetype_element":"Equilibrium Baseline","domain_realization":"At a uniform temperature below the practical cure-onset range, net heat flow is small and epoxy conversion is too slow for the intended manufacturing interval."},{"archetype_element":"Disequilibrium Source","domain_realization":"The finite chemical free-energy release of the initiated crosslinking reaction produces a transient internal temperature rise and a core-to-boundary thermal gradient."},{"archetype_element":"Controlled Coupling Channel","domain_realization":"Heat crosses capsule shells and drives reversible melting; later crystallization returns heat directly to the surrounding curing resin."},{"archetype_element":"Operating Window","domain_realization":"The allowed window is bounded by capsule transition range, capsule volume fraction, resin temperature limits, casting thickness, pressure containment, and the finite cure interval."},{"archetype_element":"Dissipation Budget","domain_realization":"Reaction enthalpy is partitioned among resin heating, capsule latent storage, sensible heating of constituents, heat loss through the mold, and irreversible losses; capsule latent capacity is not treated as unlimited."},{"archetype_element":"Runaway Feedback Monitor","domain_realization":"Independent thermocouples and a shielded containment setup reveal an accelerating temperature rise or pressure event, but do not actuate the material mechanism."},{"archetype_element":"Decoupling and Re-Equilibration Rule","domain_realization":"Coupling ends naturally when the finite exotherm is exhausted and the capsules have crystallized; the mold then conducts remaining heat to ambient until the casting approaches thermal equilibrium."},{"archetype_element":"Waste or Entropy Sink","domain_realization":"The conductive mold, laboratory heat-resistant enclosure, and ambient environment receive terminal heat not retained long enough to support cure."},{"archetype_element":"Gradient Replenishment Check","domain_realization":"The design assumes only the measured finite reaction enthalpy. It is rejected if capsule heat release occurs after vitrification or if continued external heating is required to recreate the gradient repeatedly."},{"archetype_element":"Stakeholder Harm Boundary","domain_realization":"Temperature, pressure, volatile release, capsule-shell chemistry, and cured-material integrity must remain within predeclared laboratory and material limits; no production article is exposed in the first test."}],"mechanism_mapping":[{"mechanism_slug":"gradient_and_flux_map","role":"Thermocouple positions and calorimetry distinguish reaction heat generation, latent absorption and release, and mold loss across core and boundary regions.","counterfactual_removal":"Removing the map would not stop phase change or heat transfer, but would prevent defensible selection of transition temperatures and obscure whether heat was productively shifted."},{"mechanism_slug":"dissipation_ledger","role":"Measured reaction enthalpy, capsule latent capacity, sensible heat, and mold loss are compared so the capsules are not credited with more recoverable heat than physically available.","counterfactual_removal":"The passive effect could still occur, but saturation and displaced heat would be unaccounted for, making the operating window unsafe and the causal claim ambiguous."},{"mechanism_slug":"bounded_coupling_pilot","role":"Small castings test a fixed capsule fraction and thickness before any larger thermal mass is attempted.","counterfactual_removal":"The material mechanism remains possible, but scale-dependent self-heating could exceed capsule capacity before its limits are characterized."},{"mechanism_slug":"runaway_stop_rule","role":"A predeclared temperature, pressure, smoke, or rapid-rise threshold triggers termination of heating and isolation of the vessel during the laboratory test.","counterfactual_removal":"Latent absorption still functions, but the experiment would lack a credible response to capsule saturation or incompatible cure chemistry."},{"mechanism_slug":"damping_and_venting_controls","role":"Capsule melting is the primary passive damper; the conductive mold and shielded, pressure-relieved enclosure accept heat or gases beyond the recoverable budget.","counterfactual_removal":"Without the phase-change capsules, the proposed peak-to-tail heat shift disappears; without the terminal sink, stored and residual heat could accumulate rather than re-equilibrate safely."},{"mechanism_slug":"post_gradient_re_equilibration_review","role":"After cooling, sectioned calorimetry and material-property tests determine whether the casting reached a viable cured state rather than merely showing a lower peak temperature.","counterfactual_removal":"The thermal trace alone could mistake reaction dilution or delayed undercure for successful dissipation management."}],"causal_chain":["Crosslinking begins and releases a finite pulse of reaction heat faster in the insulated interior than heat can leave through the mold.","Local temperature crosses the selected capsule melting interval.","Capsule melting absorbs latent heat, reducing the amount immediately available for further temperature-driven reaction acceleration.","As the reaction slows and the casting temperature begins to fall, the capsules crystallize and return stored heat to nearby resin.","The returned heat prolongs the locally useful kinetic window without recreating the original peak heat-generation rate.","After the chemical gradient is exhausted, the conductive mold removes terminal heat and the casting approaches a stable temperature.","If transition timing and capacity are correctly matched, peak suppression and tail support reduce cured-state disparity through a material mechanism; if they are mismatched, the proposal fails."],"baseline":"The primary baseline is the same resin, casting geometry, mold, initiation temperature, and external schedule without phase-change capsules. Controls include an equal-volume inert-shell or inert-filler formulation to separate latent heat from resin dilution, and an equal-volume thermally conductive filler formulation to separate latent storage from ordinary conduction.","nearest_rivals":["Lower-exotherm resin chemistry or slower hardener, which changes the reaction source rather than temporarily storing its heat","Thin sequential pours, which shorten the heat path but add interfaces and manufacturing stages","Active mold heating and cooling, which can shape the thermal cycle but depends on external energy and control hardware","High-conductivity inert fillers, which redistribute heat spatially without storing it for later release","A single-transition phase-change additive, which is simpler but may provide a narrower absorption-and-release interval"],"remaining_contrastive_claim":"Under the same resin chemistry, casting geometry, capsule or filler volume fraction, and external thermal schedule, a compatible phase-change formulation should alter both the rising peak and the falling cure tail in correspondence with independently measured melting and crystallization transitions. Failure to outperform equal-volume inert controls on cured-state uniformity would defeat the claim that reversible latent-heat shifting, rather than dilution or conductivity, is doing useful work.","authority_safety":{"decision_authority":"The laboratory principal investigator or designated materials-safety lead may authorize only the bounded coupon experiment after reviewing resin, hardener, capsule-shell, and phase-change-core safety data.","authorized_first_step":"Prepare calorimetry-scale blends and then one shielded set of small instrumented coupons containing neat resin, inert control, and one prespecified phase-change fraction; do not increase casting mass until the heat balance and temperature traces are reviewed.","excluded_actions":["Production deployment","Human or environmental exposure testing","Unreviewed scale-up of reactive mass","Use of capsules with uncharacterized shell compatibility or volatile cores","Changing resin chemistry and capsule fraction simultaneously","Treating sensor readings or software analysis as the operative intervention"],"halt_rollback":"Before initiation, reject or segregate an incompatible blend. During cure, terminate external heating and isolate the shielded vessel if a temperature, pressure, smoke, or rapid-rise limit is crossed. An initiated thermoset cure cannot be reversed; the affected coupon must cool in containment and be quarantined for disposal or analysis. Subsequent runs revert to the neat-resin or inert-control formulation."},"negative_tests":{"strongest_counterevidence":"The apparent temperature moderation is fully explained by reduced reactive-resin fraction or altered conductivity; crystallization occurs only after vitrification and cannot support conversion; or capsules rupture, dissolve, or suppress cure enough that residual enthalpy and material integrity worsen despite a lower peak.","problem_falsifier":"In the intended coupon geometry, the neat-resin baseline shows neither a material-temperature excursion nor a meaningful core-to-boundary or peak-to-tail cured-state disparity, leaving no exploitable disequilibrium for this intervention.","intervention_falsifier":"At equal nonreactive volume fraction, the phase-change formulation does not improve the joint outcome of temperature-window compliance and post-cure spatial uniformity relative to inert controls, or measured heat-flow timing fails to align with capsule melting and crystallization.","risks":["Capsule shells or core material may interfere chemically with crosslinking.","Capsules may rupture during mixing or thermal expansion and contaminate the resin.","Added inclusions may lower glass-transition temperature, stiffness, dielectric performance, adhesion, or fracture resistance.","Capsule buoyancy, sedimentation, or agglomeration may create new spatial gradients.","Latent capacity may saturate before the exotherm peaks.","Delayed crystallization may create a secondary hot region or occur too late to support cure.","A combustible or volatile phase-change core may increase fire or pressure hazards.","Coupon behavior may not transfer to larger thermal masses because heat generation scales differently from heat rejection."]},"next_evidence_step":"Run a bounded bench study with differential scanning calorimetry to measure resin exotherm and capsule transitions separately, then cast triplicate small coupons of neat resin, equal-volume inert control, and one phase-change formulation in the same mold. Record independent core and boundary temperatures, section the cooled coupons for residual-enthalpy measurements, and stop unless the phase-change timing overlaps the exotherm tail without breaching preset thermal or pressure limits.","prior_art_status":"UNSEARCHED","diversity_from_prior_proposals":"Not assessed against other proposals because runtime isolation forbids inspecting them; this candidate is derived solely from the supplied archetype and chemistry/materials domain card.","revision_record":{"parent_version":null,"progress_targets_addressed":["Construct one causally explicit chemistry-and-materials candidate","Make the essential effect physical and independent of forbidden wrappers","State serious rivals, falsifiers, safeguards, and a bounded evidence step"],"conceptual_changes":["Initial version; no parent proposal","Realized disequilibrium leverage as reversible storage and return of reaction heat rather than as reporting or process governance"],"operational_changes":["Specified passive distributed capsules, fixed coupling limits, inert controls, containment, and stop conditions"],"evidence_changes":["Specified independent thermal, calorimetric, and cured-state measurements that distinguish latent heat from dilution and conductivity"],"claim_changes":["Restricted the claim to a testable causal contrast and made no novelty, prevalence, demand, or effect-size assertion"]},"substrate_contract":{"primary_allowed_process":"PHYSICAL_MATERIAL","counterfactual_independence":"The essential effect is heat absorption during capsule melting and heat release during crystallization, coupled by physical conduction to the curing resin. It persists if software, algorithms, dashboards, reporting, incentives, authorization systems, and procedural enforcement are removed. Thermocouples and human stop procedures support evidence and safety only; they neither calculate nor actuate the heat shift.","forbidden_channel_audit":"No algorithm, database, recommender, information-routing system, or software control loop changes cure behavior. No policy, incentive, permission, review, training, or accountability mechanism is presented as the intervention. Removing all sensors and analysis would leave the capsules' latent-heat damping and return intact, although conducting an uninstrumented reactive experiment would be unsafe. The proposal's load-bearing channel is phase transition plus conductive heat transfer within a material composite."}}}