Rheological behavior of acrylic paint blends based on polyaniline

Sirqueira, Alex da Silva; Júnior, Dermeval Teodoro; Coutinho, Marcio da Silva; Neto, Artur Soares da Silva; Silva, Adriana A.; Soares, Bluma G.

doi:10.1590/0104-1428.2178

Cited by 19 publications

(12 citation statements)

References 36 publications

(39 reference statements)

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“…A consistent trend was observed in K and n value, depending on the factorial level. In the literature, similar tendency was observed in epoxy coating with nanoparticles [5,12,23,24].…”

Section: Also Indicates That Increasing Nanoparticles Concentration Cause a Considerable Non-linear Increase In Consistency Coefficients supporting

confidence: 79%

“…Complex fluids with weakly aggregated internal structures often present thixotropic behavior, defined as a flow-induced reversible time-dependent shear-thinning viscous response [12,20]. An important criterion of thixotropy is the reversible effect, when the substance is left to rest.…”

Section: Thixotropy Measurementsmentioning

confidence: 99%

“…In our previous studies, commercial acrylic paint with conductive carbon black were studied, to modify the original paint characteristic and obtain a clear comprehension of the filler influence on paint rheology [12].…”

Section: Introductionmentioning

confidence: 99%

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Rheological, EMI and corrosion properties of epoxy coating with nanoparticle and conductive carbon black

et al. 2021

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The purpose of this paper was determining the effects of two nanoparticles additions in a commercial epoxy coating system on rheology characterization. Two kinds of hybrid organic–inorganic silicates (benzytallowdimethylammonium salts with bentonite) were studied, APA, with C14-16 organic chain and, HT, with C2-4 organic chain. A 22 factorial design, with two categorical nanoparticules factors was applied. The experimental data of viscosity were fit to three different rheological constitutive models: Herschell-Bulkley, Carreau-Yasuda and Cross. The best fit was obtained by Herschel-Bulkley model. The APA nanoparticle had substantial changes in yield stress values, but no effect was observed when HT had been isolated. Two thixotropic models were analyzed for the epoxy system, and the better performance was observed for the model with two rheological parameters. The presence of nanoparticule in epoxy coating reduced around 40% the recovery time. The addition of nanoparticules changes the rheological properties of a commercial coating. The X-Rays Diffraction analyses were done to observe the dispersions degree and exfoliations in the epoxy system. The crystalline peak of nanoparticles had lost for all coating formulations. The electromagnetic interference shielding attenuation was 60% in the formulations with high content of both nanoparticles. The APA and HT improved hence, the anticorrosion performance of the epoxy coating for 720 h in chloride solution. Corrosion resistance had the best performance in the coating with high concentration of carbon black and nanoparticles.

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“…A consistent trend was observed in K and n value, depending on the factorial level. In the literature, similar tendency was observed in epoxy coating with nanoparticles [5,12,23,24].…”

Section: Also Indicates That Increasing Nanoparticles Concentration Cause a Considerable Non-linear Increase In Consistency Coefficients supporting

confidence: 79%

Section: Thixotropy Measurementsmentioning

confidence: 99%

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Rheological, EMI and corrosion properties of epoxy coating with nanoparticle and conductive carbon black

et al. 2021

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“…In contrast, at 15% PANI loading, complete shear thinning or pseudoplasticity is observed throughout the testing range. This non‐Newtonian behavior is ascribed to the textural changes in the sample with increase in shear rate . The shear thinning arising at low shear rate is due to the rise in stiffness of system by the formation of the PANI aggregates .…”

Section: Resultsmentioning

confidence: 99%

Carbon nanotubes and polyaniline filled hybrid epoxy composites: Assessing the viscoelastic behavior and mechanical properties

et al. 2018

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In the current work, polyaniline (PANI) and epoxy (EP) composites were prepared and the effect of carbon nanotubes (CNT) addition to EP/PANI (5%) composite on mechanical and viscoelastic properties was studied. PANI was synthesized using p‐toluenesulfonic acid (PTSA) as dopant and characterized through UV–vis and FTIR spectroscopy. Viscosity of uncured EP and composites was studied as a function of shear rate and found to increase with fillers concentration. Dynamic mechanical analysis revealed that PANI increased the storage modulus wherein glass transition temperature (Tg) almost remains constant. Addition of 0.1% CNT to EP/PANI (5%) composite further raised the modulus whereas 0.4% CNT had no significant effect on storage modulus due to agglomeration. However, peak intensity of tan δ curve and Tg were improved for both CNT concentrations. Mechanical properties like tensile, flexural, and impact strength remained unaltered at low PANI (5%) content while at high loading these properties deteriorated significantly. 0.1% CNT has marginal effect on mechanical strength of EP/PANI (5%) system while 0.4% CNT notably reduced the properties. Morphological studies showed that PANI had good dispersion in matrix at lower loading (5%) while it forms uniformly distributed aggregates at higher contents. PANI dispersion was not affected by inclusion of CNT. POLYM. COMPOS., 40:E1143–E1150, 2019. © 2018 Society of Plastics Engineers

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“…A reologia é ferramenta fundamental para o bom entendimento das propriedades e aplicações das tintas e revestimentos poliméricos ROGER;TANNER, 2010;SIRQUEIRA et al, 2016;WU;QUEIROZ;MOHALLEM, 2016). O fenômeno de tixotropia é comum em tintas,sendo uma característica reológica interessante (redução da viscosidade com o tempo de aplicação de uma taxa de cisalhamento).…”

Section: Introductionunclassified

O Papel Do Engenheiro Químico No Mercado De Trabalho: Produção De Um Guia Prático Digital Destinado Aos Graduandos E Demais Interessados Na Profissão

Pereira¹,

Silva²

2019

Impactos Das Tecnologias Na Engenharia Química

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CIP) (eDOC BRASIL, Belo Horizonte/MG) I34 Impactos das tecnologias na engenharia química [recurso eletrônico] / Organizadora Carmen Lúcia Voigt. -Ponta Grossa (PR): Atena Editora, 2019. -(Impactos das Tecnologias na Engenharia Química; v. 1) Formato: PDF 1. Engenharia química -Pesquisa -Brasil. I. Voigt, Carmen Lúcia. II. Série. CDD 660.76 Elaborado por Maurício Amormino Júnior -CRB6/2422 O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores.2019 Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comerciais.

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Rheological behavior of acrylic paint blends based on polyaniline

Cited by 19 publications

References 36 publications

Rheological, EMI and corrosion properties of epoxy coating with nanoparticle and conductive carbon black

Rheological, EMI and corrosion properties of epoxy coating with nanoparticle and conductive carbon black

Carbon nanotubes and polyaniline filled hybrid epoxy composites: Assessing the viscoelastic behavior and mechanical properties

O Papel Do Engenheiro Químico No Mercado De Trabalho: Produção De Um Guia Prático Digital Destinado Aos Graduandos E Demais Interessados Na Profissão

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