Epoxy resin/phosphorus‐based microcapsules: Their synergistic effect on flame retardation properties of high‐density polyethylene/graphene nanoplatelets composites

Xia, Yong; Tang, Rui; Tao, Shengxi; Tao, Guoliang; Gong, Fanghong; Li, Chunlin; Cao, Zheng

doi:10.1002/app.46662

Cited by 17 publications

(22 citation statements)

References 35 publications

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“…Different carbon materials and their corresponding carbon structures exhibit different characteristic bands in their Raman spectra. 30 , 50 The laser-induced blackening of polymers due to the formation of the black carbonized materials can be confirmed by Raman spectroscopy. 26 , 51 Figure 10 a shows Raman spectra of ABS and ABS/2% OMMT composites before and after laser marking.…”

Section: Results and Discussionmentioning

confidence: 85%

Surface Laser-Marking and Mechanical Properties of Acrylonitrile-Butadiene-Styrene Copolymer Composites with Organically Modified Montmorillonite

Zhang

et al. 2020

ACS Omega

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In this study, organically modified montmorillonite (OMMT) was prepared by modifying MMT with a cationic surfactant cetyltrimethylammonium bromide (CTAB). The obtained OMMT of different loading contents (1, 2, 4, 6, and 8 wt %) was melt-blended with poly(acrylonitrile- co -butadiene- co -styrene) (ABS) to prepare a series of ABS/OMMT composites, which were laser marked using a neodymium-doped yttrium aluminum garnet (Nd:YAG) laser beam of 1064 nm under different laser current processes. X-ray diffraction (XRD), color difference spectrometer, optical microscope, water contact angle tests, scanning electron microscope (SEM), and Raman spectroscopy were carried out to characterize the morphology, structure, and properties of the laser-patterned ABS composites. The effects of the addition of OMMT and the laser marking process on the mechanical properties of ABS/OMMT composites were investigated through mechanical property tests. The results show that the obtained ABS/OMMT composites have enhanced laser marking performance, compared to the ABS. When the OMMT content is 2 wt % and the laser current intensity is 9 A, the marking on ABS composites has the highest contrast (Δ E = 36.38) and sharpness, and the quick response (QR) code fabricated can be scanned and identified with a mobile app. SEM and water contact angle tests showed that the holes, narrow cracks, and irregular protrusion are formed on the composite surface after laser marking, resulting in a more hydrophobic surface and an increased water contact angle. Raman spectroscopy and XRD indicate that OMMT can absorb the near-infrared laser energy, undergo photo thermal conversion, and cause the pyrolysis and carbonization of ABS to form black marking, and the crystal structure itself does not change significantly. When the 2 wt % of OMMT is loaded, the tensile strength, elongation at break, and impact strength of ABS/OMMT are increased by 15, 20, and 14%, respectively, compared to ABS. Compared with the unmarked ABS/OMMT, the defects including holes and cracks generated on the surface of the marked one lead to the decreased mechanical property. The desirable combination of high contrast laser marking performance and mechanical properties can be achieved at an OMMT loading content of 2 wt % and a laser current intensity of 9 A. This research work provides a simple, economical, and environmentally friendly method for laser marking of engineering materials such as ABS.

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Section: Results and Discussionmentioning

confidence: 85%

Surface Laser-Marking and Mechanical Properties of Acrylonitrile-Butadiene-Styrene Copolymer Composites with Organically Modified Montmorillonite

Zhang

et al. 2020

ACS Omega

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“…Intumescent flame retardant (IFR) is one of the promising candidates to obtain super flame‐retarded EPs owing to its tremendous advantages, such as low cost, low smoke and toxic gas production, and high resistance to ignition . However, typical organic IFR additives (eg, ammonium polyphosphate [APP]‐pentaerythritol [PER]‐melamine [MEL] system) need a relatively high loading to achieve the required flame retardant performance due to their poor thermal stability and low flame‐retardant efficiency, thus severely diminishing the physical and mechanical properties of polymer composites …”

Section: Introductionmentioning

confidence: 99%

“…5,6 However, typical organic IFR additives (eg, ammonium polyphosphate [APP]-pentaerythritol [PER]-melamine [MEL] system) need a relatively high loading to achieve the required flame retardant performance due to their poor thermal stability and low flame-retardant efficiency, thus severely diminishing the physical and mechanical properties of polymer composites. 7 To further improve the flame-retardant efficiency of intumescent system, mono-component IFR has been proposed due to its high thermal stability and flame retardant efficiency, which made from acid source, carbon source, and gas source by chemical synthesis. 8,9 Gao et al 10 The incorporation of synergists into the intumescent system is another effective way to reduce the loading of IFR and acquire desired flame-retardant efficiency, and these synergists include montmorillonite, polyoxometalate, graphene, and metal oxide.…”

Section: Introductionmentioning

confidence: 99%

Synergistic effect of bismuth oxide and mono‐component intumescent flame retardant on the flammability and smoke suppression properties of epoxy resins

Jia

Yan

et al. 2019

Polymers for Advanced Techs

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A novel mono‐component intumescent flame retardant named pentaerythritol phosphate melamine salt (PPMS)‐hybrid bismuth oxide (PPMS‐Bi2O3) was synthesized and carefully characterized by FTIR, 1H NMR, 31P NMR, SEM‐EDS, and TG analyses. Then, PPMS‐Bi2O3 was utilized as flame retardant for epoxy resins (EPs), and the thermal stability, flame retardancy, and smoke suppression properties of EP composites were investigated. TG results show that PPMS‐Bi2O3 is more conducive to enhance the thermal stability and char forming ability of EP composites compared with the same addition of PPMS or the mixture of PPMS and Bi2O3, and this positive effect is enhanced with the increasing Bi2O3 content. Cone calorimeter test reveals that the PPMS‐Bi2O3 can effectively reduce the heat release and smoke production in comparison with PPMS or the mixture of PPMS and Bi2O3 due to the formation of a more compact and intumescent char against fire, as judged by digital photographs and SEM images. EDS analysis indicates that the combination PPMS and Bi2O3 by hydrogen bonds promotes to generate more phosphorus‐rich and aromatization structures in the condensed phase that enhance the barrier effect and anti‐oxidation ability of the char, thus imparting higher flame retardant and smoke suppression efficiencies to EP composites.

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“…Therefore, different PNs‐containing polymer systems such as epoxy, polyurethane, and so forth , have been studied as anticorrosive materials on various types of metallic surfaces. The most widely studied anticorrosive thermoset is the epoxy resin because of its inherent good mechanical, adhesion, and thermal properties . Armelin et al .…”

Section: Introductionmentioning

confidence: 99%

“…The most widely studied anticorrosive thermoset is the epoxy resin because of its inherent good mechanical, adhesion, and thermal properties. 4,5,11 Armelin et al prepared the compositions of epoxy with polyaniline and polypyrrole and studied the mechanical-and corrosion-inhibition properties. 12 The major drawbacks of PN/ epoxy nanocomposites were the low elongation and high brittleness character due to poor dispersion in the epoxy matrix.…”

Section: Introductionmentioning

confidence: 99%

Bio‐based epoxy/polyaniline nanofiber‐carbon dot nanocomposites as advanced anticorrosive materials

Saikia

Sarmah

Kumar

et al. 2019

J of Applied Polymer Sci

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Application of anticorrosive coating on metal surface enhances the durability of the metal. Anticorrosion can be achieved by the incorporation of conducting nanomaterials like polyaniline or its nanohybrid to a coating material. Thus, bio‐based epoxy nanocomposites were fabricated by the in situ method using polyaniline nanofiber‐carbon dot nanohybrid (0.50 and 1 wt % with respect to epoxy), as the anticorrosive material. The epoxy resin was obtained by polycondensation of bisphenol‐A, sorbitol, and monoglyceride of castor oil (mole ratio of 16:3:1), as hydroxyl compounds with epichlorohydrin (1:3 equivalent, hydroxyl:epichlorohydrin). The morphological analyses of the nanocomposites revealed the uniform dispersion and good compatibility of the nanohybrid in the epoxy matrix. The thermosets demonstrated good tensile strength (30 MPa), elongation at break (45%), scratch resistance (>10 kg) and impact resistance (14.75 kJ/m), good thermal stability (above 250°C), and chemical resistance. The anticorrosion study of the nanocomposites showed excellent corrosion protection efficiency (corrosion rate: 5.68 × 10−3 mils per year) in 3.5 wt % NaCl compared to the pristine epoxy system. Therefore, this bio‐based thermosetting epoxy nanocomposite was demonstrated as efficient anticorrosive material. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47744.

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Epoxy resin/phosphorus‐based microcapsules: Their synergistic effect on flame retardation properties of high‐density polyethylene/graphene nanoplatelets composites

Cited by 17 publications

References 35 publications

Surface Laser-Marking and Mechanical Properties of Acrylonitrile-Butadiene-Styrene Copolymer Composites with Organically Modified Montmorillonite

Surface Laser-Marking and Mechanical Properties of Acrylonitrile-Butadiene-Styrene Copolymer Composites with Organically Modified Montmorillonite

Synergistic effect of bismuth oxide and mono‐component intumescent flame retardant on the flammability and smoke suppression properties of epoxy resins

Bio‐based epoxy/polyaniline nanofiber‐carbon dot nanocomposites as advanced anticorrosive materials

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