Effect of Heating Rate on the Complex Permittivity of Hollow-porous Carbon Fibers
Why this work is in the frame
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Bibliographic record
Abstract
A series of polyacrylonitrile-based hollow-porous carbon fibres(PAN-HPCFs) were prepared by oxi-dating PAN hollow-porous fibers in air and carbonizing their cured fibers in nitrogen.The effects of preoxidation and carbonization heating rate on the microstructure,composition,electrical volume conductivity and complex permittivity were investigated.The microstructure of the obtained PAN-HPCFs is changed greatly by the heating rate.The electrical volume conductivity and complex permittivity decrease with the increase of heating rate.The electrical volume conductivity is in the range 1997.14 S/m to 153.39 S/m with the preoxidation heating rate in-creasing from 0.5℃/min to 4℃/min.At 2 GHz,the value of e″ of composites of paraffin and PAN-PHCFs de-creases from 70.35 to 6.99 when preoxidation heating rate increases form 0.5℃/min to 4℃/min.Results indicate that the electrical conductivity and complex permittivity of PAN-HPCFs can be adjusted by the heating rate.
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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 | 0.000 | 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