Synthesis and Properties of Bis(3,5-dimethyl-4-amino phenyl)-4′-methoxy phenyl Methane Based Polymerization of Monomeric Reactants Type Polyimide and Its Composites
Why this work is in the frame
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Bibliographic record
Abstract
Polymerization of Monomeric Reactants (PMR) type of polyimide was prepared using bis(3,5-dimethyl-4-amino phenyl)-4′-methoxy phenyl methane and characterized by elemental analysis, FT-IR, 1 H NMR, and 13 C NMR spectral techniques. Differential scanning calorimetry (DSC) analysis shows that melting and curing take place in the temperature range of 215 to 230 °C and 265 to 315 °C respectively. The uncured and cured prepolymer undergo two step (335 and 583 °C) and single step (537 °C) decomposition respectively. The T 10% and char yield at 800 °C were found to be 465 °C and 46 wt %, respectively. FT-IR and thermogravimetric analysis (TGA) of the heat treated resin powder and prepolymer reveal that imidization takes place in the temperature range 250–275 °C and cross-linking occurs between 275 and 325 °C. The prepolymer was found to undergo photocross-linking. The flexural strength, flexural modulus, and interlaminar shear strength of carbon fiber (T300) reinforced BA4MPM-PMR type composite are 447 MPa, 34 GPa, and 42 MPa, respectively.
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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 | 0.002 |
| 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