Design of Novel POB/h-BN Co-Filled PTFE Composites with Enhanced Thermal–Mechanical Properties

Round 1

Reviewer 1 Report

Review report

 

Manuscript ID: Crystals-1208305

Title: 

 Design of novel POB/h-BN co-filled PTFE composites with enhanced thermal-mechanical properties

In this work two types of fillers, hexagonal boron nitride and polyimide/hexagonal boron nitride cofillers have been used to PTFE matrix.  Overall, the article is well written, and the results are well explained. However, it is impossible to give a complete review since the figures are not displayed in the manuscript. It seems like the pdf file is corrupted.

 

 

 

Author Response

Many thanks for your important comment! These figures have been displayed in the revised manuscript.

Reviewer 2 Report

This manuscript reports the design of novel POB/h-BN co-filled PTFE composites with enhanced thermal-mechanical properties. In manuscript, the author studied the effect of the addition of POB/h-BN  and PI/h-BN with different ratios to PTFE polymer on the thermal-mechanical properties of composites. The language of this article is well organized and the experimental data is comprehensive. Their finding is interesting and deserves to be published if the authors can address the following issue:

1-I recommend that the authors should add a sub-section called under the experimental procedure section called materials. In this subsection they should list all the materials and chemicals used in the preparation including the name of the supplier and the country. 

2-The two sub-sections 2.2 Microstructural and phase composition characterization and 2.3. High-temperature thermal-mechanical performance should be combined in one subsection and called characterizations. In this sub-section all the techniques used should be added such as SEM. DSC, TGA, XRD,…,etc.

3-The discussions on the SEM results in the sub-section 2.2. Microstructural and phase composition characterization should be moved to section 3. Results.

4-According two page 2, line 92, the authors claimed that the dried process could promote covalent bond between KH560 and h-BN. I think molecular structure technique such as FTIR, Raman, and/or xps is needed to prove the formation of new bonds between the KH560 and h-BN. Also, the molecular structure technique is needed to know that the formation of the cross-linked reticulation structure is due weak physical forces or due to the formation of new chemical bonds specially between the POB, PI and the PTEF.

Author Response

Many thanks for your valuable suggestion. We have advised the manuscript according to reviewer's comment in the  attachment Word. Thank you very much!

Author Response File: Author Response.docx

Reviewer 3 Report

In this paper, two types of fillers with different contents were added to PTFE matrix through the cold-pressing and sintering method. The effects of microstructure and crystallization orientation of POB/h-BN and PI/h-BN multi-component fillers on the thermal-mechanical property of PTFE-based composites were studied. In general, the research work well done, I recommend its publication in Crystals.

Author Response

Many thanks for your comment!

Author Response File: Author Response.docx

This manuscript is a resubmission of an earlier submission. The following is a list of the peer review reports and author responses from that submission.