Epoxy composites of reduced flammability

Oliwa, Rafał; Heneczkowski, Maciej; Oleksy, Mariusz; Galina, Henryk

doi:10.1016/j.compositesb.2016.03.074

Cited by 35 publications

(19 citation statements)

References 35 publications

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“…will be concomitantly released. 1,2 This adversely affects human body and environment and also makes reghting very difficult. 3 Therefore, it is an urgent social demand to endow EP with good ame retardancy and smoke suppression.…”

Section: Introductionmentioning

confidence: 99%

The synergistic effect of cuprous oxide on an intumescent flame-retardant epoxy resin system

Chen

Wang

et al. 2017

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

The synergistic effect of cuprous oxide on an intumescent flame-retardant epoxy resin system

Chen

Wang

et al. 2017

RSC Adv.

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“…A microporous and more compact structure was observed. This phenomenon corresponds to the existence of phytic acid in the PA‐MMT, which mainly acts in the gas phase by the release of phosphorus acid . Phosphorus acid can catalyze the pyrolyzation of carbonyl group to form char between UPR and IFRs composite .…”

Section: Resultsmentioning

confidence: 99%

“…This phenomenon corresponds to the existence of phytic acid in the PA-MMT, which mainly acts in the gas phase by the release of phosphorus acid. 40 Phosphorus acid can catalyze the pyrolyzation of carbonyl group to form char between UPR and IFRs composite. 41 The production of phosphoryl species (PO• and PO 2 •) from the pyrolysis of phytic acid was believed to exert a quenching effect in the gas phase.…”

Section: Thermal Propertiesmentioning

confidence: 99%

Modified montmorillonite combined with intumescent flame retardants on the flame retardancy and thermal stability properties of unsaturated polyester resins

Chen

Zhang

et al. 2019

Polymers for Advanced Techs

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Modified montmorillonite‐containing phytic acid (PA‐MMT) has been prepared by acid treatment and then introduced into unsaturated polyester resin (UPR) with an intumescent flame retardant (IFRs). The flame retardancy and thermal degradation of UPR/IFRs/PA‐MMT were evaluated by a limiting oxygen index (LOI) test, a vertical burning test (UL‐94), a thermogravimetric analysis (TGA), and a cone calorimeter test (CCT). Besides, the mechanical properties were studied by a universal testing machine. The LOI value of UPR/IFRs/PA‐MMT composites was increased to 29.2%. The CCT results indicated that the incorporation of PA‐MMT and IFRs significantly improved the combustion behavior of UPR. The results of the mechanical properties indicated that 1.5 wt% loading of PA‐MMT in UPR/IFRs showed the highest improvement in flexural strength and tensile strength. The flame‐retardant mechanism of PA‐MMT/IFRs was examined and discussed based on the results of combustion behavior and char analysis.

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“…Phosphorus‐based compounds [such as 9,10‐dihydro‐9‐oxa‐10‐phosphaphenanthrene‐10‐oxide (DOPO)] with good flame‐retarding properties and less loading have drawn the attention of researchers. The active hydrogen of DOPO can react with epoxy groups in resin, silane, graphene oxide, and so on . Zhang and Yang synthesized a new type of phosphorus‐containing silane with superior thermal stability through the addition reaction of DOPO and vinyl triethoxysilane.…”

Section: Introductionmentioning

confidence: 99%

Improvement of the liquid oxygen compatibility of epoxy via the addition of surface‐modified boehmite

Wang

Peng

et al. 2018

J of Applied Polymer Sci

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To improve the liquid oxygen compatibility and cryogenic mechanical properties of epoxy resin, we synthesized and characterized a hybrid compound (functionalized boehmite) containing boehmite, phosphorus, and silicon element. The thermal properties and liquid oxygen compatibility of the composites were investigated in detail. The results show that the addition of functionalized boehmite increased the char residue obviously but had little effect on the thermal decomposition temperature and glass-transition temperature of the composites. The liquid oxygen compatibility of the composites was significantly improved. Composites with 4 wt % boehmite, 0.99 wt % Si, and 1.1 wt % P passed the impact test. Surface element analyses before and after the drop tests suggested that the functionalized boehmite in epoxy might have prevented the impact reaction in liquid oxygen through two steps. First, the compound decomposed into phosphoric oxyacid and Al 2 O 3 under the impact energy and captured the H• and •OH radicals produced from the decomposition of the resin. Then, the decomposition covered the surface, forming a protective layer to isolate the oxygen. The mechanism of the liquid oxygen compatibility of the epoxy composites was subsequently analyzed. In addition, the cryogenic tensile properties of the epoxy composites containing functionalized boehmite showed that the composites had potential applications under cryogenic liquid oxygen environments.

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Epoxy composites of reduced flammability

Cited by 35 publications

References 35 publications

The synergistic effect of cuprous oxide on an intumescent flame-retardant epoxy resin system

The synergistic effect of cuprous oxide on an intumescent flame-retardant epoxy resin system

Modified montmorillonite combined with intumescent flame retardants on the flame retardancy and thermal stability properties of unsaturated polyester resins

Improvement of the liquid oxygen compatibility of epoxy via the addition of surface‐modified boehmite

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