A Study Of The Thermal And Mechanical Properties Of Recycled Crosslinked Hdpe
Bibliographic record
Abstract
Crosslinked high-density polyethylene (XHDPE) is used to manufacture large and rigid products, such as fuel tanks, using a rotomolding process.Currently, defective and post-consumer parts are not recycled and sent to landfills.Hence, reuse of this material, through compression molding is the objective of this study.Thermal characterization indicated that the recycled XHDPE, in pulverized powder form, could melt although the heat of fusion was less than that of virgin material.However, while the virgin XHDPE could be compression molded at the melting temperature, the recycled XHDPE required higher temperature.The recycled XHDPE started to degrade at lower temperature than virgin XHDPE.Based on this data, optimal compression molding process conditions were chosen to prepare dense tensile test coupons.Both materials exhibited similar tensile properties demonstrating the recyclability of XHDPE. Rotomolding; compression molding; recycled XHDPE.I.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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) | 0.001 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".