Multifunctional Modifying Systems Based on Ionic Liquids for Epoxy Resin Systems and Composites
, Andrea Szpecht 1, Ákos Pomázi 3, Zsófia Kovács 3, Beáta Szolnoki 4, Balázs Pinke 3, Andrea Toldy 3,5 and Marcin Smiglak 1
Round 1
Reviewer 1 Report
The manuscript may be improved by following the comments below.
Line number 20 in the abstract section should be rewritten.
In the introduction section the line 74 the whole paragraph about ionic liquid is very traditional definition of Ionic liquid. It should be rewritten.
Line number 90 , the phosphonium ionic liquids (PILs), the abbreviation may be changed as usually PIL is referred as Protic Ionic liquid.
Do the water has the effect of the Epoxy system.
Water play a major role in the ionic liquid if water is present as moisture in the IL. So its important to report the content of water in IL. Karl Fischer would be alternative for such.
It would be more interesting to show the schematic diagram of the whole manuscript. And another diagram showing how ionic liquid chemical structure interaction with epoxy.
Minor editing
Author Response
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Reviewer 2 Report
The research was performed and described accurately.
Minor editing problems were detected:
Line 44: non-flammable vapors BETTER non-flammable gases
Line 57: (such as 3,4,5,6-Dibenzo-1,2-Oxaphosphane-2-Oxide, DOPO – COMPARE: Line 152: DOPO (9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide) REMARK: both names for DOPO are used, but in the same paper the name can not be changed. The recommended chemical name is:
9,10-Dihydro-9-oxa-10-phosphaphenanthrene 10-oxide.(https://www.chemicalbook.com/ChemicalProductProperty_EN_CB9228371.htm)
Author Response
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Reviewer 3 Report
In this paper the authors determined the mechanical properties and fire performance test of several composites made with epoxy resin and different types of ionic liquid molecules. In some samples carbon fiber was also included. The paper is in general well written, and I have just some minor comments that I want the authors to reply.
1.- As far as I understood, your samples were tested in between the sol-gel (glassy) state, but they were not allowed to cure to the final state (elastomer?) which is the one that is used in construction. May I ask why you didn’t include the mechanical properties and fire test of the epoxy-ionic-carbon in the cured state at ambient temperature?
2.- Table 3, 4 says that the thermal stability of the samples having ionic liquids decreases with respect to the control. Isn't this a disadvantage of the systems? Connected with this, the authors claim that “the systems can exhibit flame retardant activity in the gas phase”, but this wasn’t really proved in the study, so this is a hypothetical statement.
3.- I’m a little confuse with Table 6: is this data correspond to the samples having carbon or not? If they have carbon, then I don’t understand the general reduction of the elastic modulus in Table 6 given that the Tg decreases according to Table 5.
4.- That LOI increases in Table 7 for the samples having ionic liquids, it this a disadvantage or not?
5.- Conclusions: due to the variability of the results, it will be good if the authors can include general guidelines in order to select a proper composite according to particular needs.
no suggestion
Author Response
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