UV-CURING OF HYPERBRANCHED POLYSILAZANES-THIOL COMPOUND SYSTEM
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Bibliographic record
Abstract
A hyperbranched polysilazanes(HBP) with multifunctionality of allyl end groups was prepared by polymerization reaction via hydrosilylation of AB_2 type monomer(N-diallyamine) dimethlsilane,which was synthesized by aminolysis of Me_2HSiCl.The molecular structure of HBP was characterized and determined by FT-IR,1H-NMR spectra analysis and GPC.Further more,the photo-initiated curing kinetics of HBP with thiol compound was studied by differential photo-scanning calorimetry(DPC) technology.The comparing analysis among HBP,HBP-thiol compound and low-functionality monomer of B_2M-thiol compound indicated that thiol functional group reacts with allyl functional group quickly under lower amount of photoinitiator(0.1 wt%) and lower light intensity(about 5 mW/cm2) in ambient condition.The curing rate and ultimate conversion of allyl group in HBP-thiol compound is higher than that in HBP,however,the ultimate conversion of allyl group in HBP-thiol compound is lower than that in B_2M-thiol compound due to the unique hyperbranched structure and high multifunctionality.The effects of photoinitiator concentration [A],UV light intensity(I_0) and reaction temperature on the UV curing rate and the final allyl bond conversion of HBP-thiol compound system were also investigated by DPC.The results indicate that the effects of photoinitiator concentration([A]),UV light intensity(I_0) and temperature on kinetics of HBP-thiol compound reveal that the curing rate(R_p) is directly proportion to square root of [A] and I_0,respectively,which is found to fit with theoretical predictions very well at [A] no more than 0.50 wt% and I_0 lower than 19.40 mW/cm2.Kinetics parameters were determined for HBP-thiol compound according to an autocatalytic model with a diffusion coefficient attached.The total apparent reaction exponent and apparent activation energy are 8.76 and 13.49 kJ/mol,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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 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 it