COMPATIBILITY STUDY OF LOW-TEMPERATURE–CAPABLE FLUOROELASTOMERS IN JET FUELS
Why this work is in the frame
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Bibliographic record
Abstract
ABSTRACT A series of four peroxide-cured fluoroelastomer (FKM) samples, varying in fluorine level and low-temperature resistance, were assessed in jet fuels JP-8 and JP-8+100 at 125 °C from 1 to 5 weeks. The key factors were fluorine level, FKM chemical structure, and the jet fuel +100 additive package. FKM stiffened upon aging with a corresponding loss in both tensile and elongation at break properties. Volume swell increased with immersion time, whereas any changes in chemical cross-linking density by equilibrium swelling were minor. The +100 additive package had a mild effect in causing property deterioration through stiffening and volume swell increases. Loss of fluorine from attack at the vinylidene fluoride group by basic additives is likely taking place. Lower fluorine containing FKM with flexible side chains was less affected by the additive package and provided the lowest glass-transition temperature ( T g ; approaching −30 °C). The volume swells (<15%) are within the realm of an acceptable material to be in contact with jet fuels.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it