Interactions between silica nanoparticles and an epoxy resin before and during network formation

Baller, Jörg; Becker, N.; Ziehmer, Markus; Thomassey, Matthieu; Zieliński, Bartosz; Müller, Ulrich; Sanctuary, Roland

doi:10.1016/j.polymer.2009.05.020

Cited by 110 publications

(70 citation statements)

References 29 publications

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“…The interactions between silica nanoparticles and diethylene triamine cured DGEBA before and during network formation was the subject of research by Baller et al 14 In the first stage of isothermal curing, there was no difference between epoxy resins with different nanosilica contents, whereas later in curing, the reaction rate was reduced, probably due to the reduced mobility of the matrix with increased nanoparticle content. This study was continued by Philipp et al, 15 and the generalized Cauchy relation was investigated.…”

Section: Amine-cured Epoxy Resinsmentioning

confidence: 99%

Epoxy resin composites with surface‐modified silicon dioxide nanoparticles: A review

Sprenger

2013

J of Applied Polymer Sci

148

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Surface-modified silica nanoparticles, 20 nm in size and with a very narrow particle size distribution, have been available as concentrates in epoxy resins in industrial quantities for the last 10 years. They can be used in epoxy resin formulations to improve many different properties, including the strength, modulus, toughness, and fatigue performance. In this review, I examine the literature published in the last decade, compare the results with a focus on the mechanical properties, and discuss the mechanisms responsible for property improvements.

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Section: Amine-cured Epoxy Resinsmentioning

confidence: 99%

Epoxy resin composites with surface‐modified silicon dioxide nanoparticles: A review

Sprenger

2013

J of Applied Polymer Sci

148

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“…DGEBA is an almost ideal glass former with very low tendency to crystallize and with a glass transition temperature of about 257 K (Baller et al 2009). The degree of polymerization of DGEBA can be varied by curing DGEBA with bisphenol A (BPA).…”

Section: Materials and Experimental Setupmentioning

confidence: 99%

“…It was obtained by adequately diluting DGEBA filled with 25 vol% of silica nanoparticles (Nanopox A410, Nanoresins AG, Geesthacht, Germany) with distilled DGEBA. The silica particles have a quasi-spherical shape with an average radius of about 12.5 nm including an ultra-thin stabilization layer (Baller et al 2009;Sanctuary et al 2006). DGEBA/BPA/ SiO 2 suspensions with a concentration of x V = 0.05 of silica nanoparticles were obtained by curing DGEBA/SiO 2 suspensions with BPA using the procedure described in the previous section.…”

Section: Materials and Experimental Setupmentioning

confidence: 99%

“…DGEBA/BPA/ SiO 2 suspensions with a concentration of x V = 0.05 of silica nanoparticles were obtained by curing DGEBA/SiO 2 suspensions with BPA using the procedure described in the previous section. Hence, the silica nanoparticles are already well dispersed in one of the reactants before polyaddition takes place (Baller et al 2009). …”

Section: Materials and Experimental Setupmentioning

confidence: 99%

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Influence of suspension viscosity on Brownian relaxation of filler particles

et al. 2017

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Brownian relaxation caused by Brownian movement of particles in suspensions can macroscopically be probed by small-amplitude oscillatory shear experiments. Phenomenological considerations suggest a direct proportionality between suspension viscosity and Brownian relaxation times. To verify this relation experimentally, a set of nanocomposite suspensions with viscosities varying over five decades is presented. The suspensions are chosen in a way to ensure that particle-particle interactions and average particle-particle distances are identical so that they can be used as a model system to study the mere influence of suspension viscosity on Brownian relaxation. The suggested linear relationship between suspension viscosity and Brownian relaxation time can be confirmed. Moreover, a verification of a recently introduced characteristic timescale for Brownian relaxation is presented.

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“…It was not tested to what maximum concentration the nano-zeolites can be incorporated. According to studies with silica particles of similar size [24,25] the loading limit of epoxy formulations is certainly not exceeded. The EP n-filled possesses a low viscosity and good handling.…”

Section: Introductionmentioning

confidence: 99%

Functional nano fillers in epoxy-dicyandiamide adhesives for prolonged shelf life and efficient cure

et al. 2011

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Shelf life at room temperature and curing behaviour at elevated temperature are studied for hot-curing accelerated epoxies (EP, diglycidylether of bisphenol A plus dicyandiamide (Dicy)) by FTIR-spectroscopy and modulated DSC. The accelerator is added either directly or with nano-zeolite filler to the EP. Due to the immobilisation of the accelerator in the pores of the nano-zeolite, the shelf life of this EP is 5 times longer than for the EP containing free accelerator. While the free accelerator acts during the whole heating step to curing temperature, the nano-zeolite does not release the accelerator before ca. 100 °C. As monitored by light microscopy, the released accelerator not only supports the curing but also stimulates the dissolution of the solid Dicy. As the result, network formation at 170 °C finishes within less than 25 minutes for the nano-filled EP.

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Interactions between silica nanoparticles and an epoxy resin before and during network formation

Cited by 110 publications

References 29 publications

Epoxy resin composites with surface‐modified silicon dioxide nanoparticles: A review

Epoxy resin composites with surface‐modified silicon dioxide nanoparticles: A review

Influence of suspension viscosity on Brownian relaxation of filler particles

Functional nano fillers in epoxy-dicyandiamide adhesives for prolonged shelf life and efficient cure

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