Preparation and flame resistance properties of revolutionary self-extinguishing epoxy nanocomposites based on layered double hydroxides

Zammarano, Mauro; Franceschi, Massimiliano de; Bellayer, Séverine; Gilman, Jeffrey W.; Meriani, S.

doi:10.1016/j.polymer.2005.07.050

Cited by 235 publications

(137 citation statements)

References 37 publications

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“…Furthermore, with LDH loading T g and thermal stability increased, and CTEs decreased. A significant improvement of EP performance with incorporation of MgAl-LDH was also reported by Zammarano et al 213,214 The LDH-containing PNCs showed different mechanism of the thermal degradation that delayed the maximum heat release by !508C, and decreased the weight loss rate. The nanocomposites showed higher flame-retardant properties than conventional flame retardants, and selfextinguishing behavior in the horizontal burn tests.…”

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confidence: 63%

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Synthetic, layered nanoparticles for polymeric nanocomposites (PNCs)

Utracki

Sepehr

Boccaleri

2007

Polymers for Advanced Techs

379

252

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Synthetic, layered nano-particles for polymeric nanocomposites (PNC's)Utracki, L. A.; Sepehr, M.; Boccaleri, E.Contact us / Contactez nous: nparc.cisti@nrc-cnrc.gc.ca.http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=fr L'accès à ce site Web et l'utilisation de son contenu sont assujettis aux conditions présentées dans le site Web page / page Web http://dx.doi.org/10.1002/pat.852 http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=15774991&lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?action=rtdoc&an=15774991&lang=fr LISEZ CES CONDITIONS ATTENTIVEMENT AVANT D'UTILISER CE SITE WEB. READ THESE TERMS AND CONDITIONS CAREFULLY BEFORE USING THIS WEBSITE.Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en This review discusses preparation and use of the synthetic layered nanoparticles in polymer matrices, i.e., in the polymeric nanocomposites (PNCs). Several types of synthetic or semi-synthetic layered materials are considered, namely the phyllosilicates (clays), silicic acid (magadiite), layered double hydroxides (LDHs), zirconium phosphates (ZrPs), and di-chalcogenides. The main advantage of synthetic clays is their chemical purity (e.g. absence of amorphous and gritty contaminants, as well as arsenic, iron, and other heavy metals), white to transparent color that assures reproducibly of brightly colored products, as well as a wide range of aspect ratios, p ¼ 20 to £6000. Several large scale production facilities have been established. The synthetic clay and LDH industries are oriented toward big volume markets: catalysis, foodstuff, cosmetics, pharmaceuticals, toiletry, etc. The use of these materials in PNCs is limited to synthetic clays and LDHs, mainly for reinforcement, permeability control, reduction of flammability, and stabilization, e.g. during dehydrohalogenation of chlorinated macromolecules. The use of lamellar ZrPs and di-chalcogenides is at the laboratory stage of functional polymeric systems development, e.g. for electrically conductive materials, catalysts or support for catalysts, in photochemistry, molecular and chiral recognition, or in fuel cell technologies, etc. Copyright # 2007 John Wiley & Sons, Ltd.KEYWORDS: polymeric nanocomposites; nanoparticles; clay; layered double hydroxides; matrix POLYMERS FOR ADVANCED TECHNOLOGIES Polym. Adv. Technol. 2007; 18: 1-37 Published online in Wiley InterScience (www.interscience.wiley.com) DOI: 10.1002/pat.852 AUTHORS' BIOGRAPHIESDr Leszek A. Utracki was born and educated (up to Habilitation) in Poland. After the post-doctoral stage at USC in Los Angeles with Robert Simha he settled in Canada. His passionate research interest has been within the field of thermodynamics, rheology and processing of multicomponent, multiphase polymeric systems. During the 55 years in the profession he has published several hundred articles, book chapters, books, patents, etc., which has placed him on the ISI li...

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confidence: 63%

“…A synergetic effect between ammonium polyphosphate and LDH was reported. In the authors recent paper 214 they compared the flame retardancy of EP compositions with ca.5 wt% of either MMT or LDH. The latter was either fully inorganic, or it contained an organic agent grafted during the templating co-precipitation.…”

Section: Ldh With Thermosetsmentioning

confidence: 99%

Synthetic, layered nanoparticles for polymeric nanocomposites (PNCs)

Utracki

Sepehr

Boccaleri

2007

Polymers for Advanced Techs

379

252

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“…After titration, the white solid was washed several times with CO 2 -free deionized water and dried overnight at 60°C in a vacuum oven [43]. The calculated anion-exchange capacity (AEC) of the LDH-NO 3 was 3.81 mmol of NO -3 /g, calculated as follows: AEC = x/M w ·10 3 (mequiv/g), where M w and x are the molecular weight and the layer charge per octahedral unit, respectively [44,45]. The organo-LDHs were synthesized via anionexchange reaction.…”

Section: Introductionmentioning

confidence: 99%

Effect of surfactant alkyl chain length on the dispersion, and thermal and dynamic mechanical properties of LDPE/organo-LDH composites

Muksing¹,

Magaraphan²,

Coiai³

et al. 2011

Express Polym. Lett.

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Abstract. Low density polyethylene/layered double hydroxide (LDH) composites were prepared via melt compounding using different kinds of organo-LDHs and polyethylene-grafted maleic anhydride as the compatibilizer. The organo-LDHs were successfully prepared by converting a commercial MgAl-carbonate LDH into a MgAl-nitrate LDH, which was later modified by anion exchange with linear and branched sodium alkyl sulfates having different alkyl chain lengths (n c = 6, 12 and 20). It was observed that, depending on the size of the surfactant alkyl chain, different degrees of polymer chain intercalation were achieved, which is a function of the interlayer distance of the organo-LDHs, of the packing level of the alkyl chains, and of the different interaction levels between the surfactant and the polymer chains. In particular, when the number of carbon atoms of the surfactant alkyl chain is larger than 12, the intercalation of polymer chains in the interlayer space and depression of the formation of large aggregates of organo-LDH platelets are favored. A remarkable improvement of the thermal-oxidative degradation was evidenced for all of the composites; whereas only a slight increase of the crystallization temperature and no significant changes of both melting temperature and degree of crystallinity were achieved. By thermodynamic mechanical analysis, it was evidenced that a softening of the matrix is may be due to the plasticizing effect of the surfactant.

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“…환경친화형 반도체 봉지재로서 할로겐 화합물 등의 난연제를 첨가하지 않고 자기소화성을 갖는 에폭시수지 조성물에 관한 연구가 이루어지고 있다 [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. 자기 소화 메카니즘은 착화 시에 화기로 인해 에폭시수지의 분해 가스가 수지를 발포시켜 열확산이 방지되는 단열층을 형성하고, 이를 보호하고 화기를 차단해주는 탄화층을 형성시키는 것으로 연소 현상의 3대 필수요소 중 열 에너지와 산소를 차단시켜 난연화를 이룬다고 알려져 있다 [4,5,13] …”

Section: )unclassified

Study on the Thermal Properties of Epoxy Resin Compositions having Conjugated Double Bond in Backbone

Lee¹,

Yoo²,

Kim³

2013

Adhesion and Interface

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Epoxy resin compositions were studied on the view of self-extinguishing properties without retardant additives and suitability as materials of eco-friendly EMC (Epoxy molding compound). Cured epoxy and phenolic resin composition having conjugated double bond of aromatic structure exhibited self-extinguishing properties and low heat release capacity. In this study, the structure of long conjugated double bond of hetero-atom type azomethyne group between conjugated double bonds of aromatic structure showed lower heat release capacity. Low heat release capacity seemed to be related with high reaction enthalpy, Tg and reactivity affected by hetero-atom structure in azomethyne group.

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Preparation and flame resistance properties of revolutionary self-extinguishing epoxy nanocomposites based on layered double hydroxides

Cited by 235 publications

References 37 publications

Synthetic, layered nanoparticles for polymeric nanocomposites (PNCs)

Synthetic, layered nanoparticles for polymeric nanocomposites (PNCs)

Effect of surfactant alkyl chain length on the dispersion, and thermal and dynamic mechanical properties of LDPE/organo-LDH composites

Study on the Thermal Properties of Epoxy Resin Compositions having Conjugated Double Bond in Backbone

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