Study on mono-dispersed nano-size silica by surface modification for underfill applications

Sun, Yangyang; Zhang, Zhuqing; Wong, Ching‐Ping

doi:10.1016/j.jcis.2005.05.067

Cited by 229 publications

(127 citation statements)

References 12 publications

(11 reference statements)

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“…On the other hand, the octamethylcyclotetrasiloxane-groups represent a better adjustment to the epoxy matrix. In this case the adjustment to the matrix has more influence on the dispersion and is more efficient [9][10][11].…”

Section: Results and Discussion-effect Of Fluid-particle-interactionsmentioning

confidence: 99%

Effect of fluid–particle-interactions on dispersing nano-particles in epoxy resins using stirred-media-mills and three-roll-mills

Schilde

Nolte

Arlt

et al. 2010

Composites Science and Technology

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. Effect of fluid-particle-interactions on dispersing nano-particles in epoxy resins using stirred-media-mills and three-roll-mills. Composites Science and Technology, Elsevier, 2010, 70 (4), pp.657. <10.1016/j.compscitech.2009.12.021>. Accepted ManuscriptEffect of fluid-particle-interactions on dispersing nano-particles in epoxy resins using stirred-media-mills and three-roll-mills This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Fibre reinforced composites are indispensable in the field of modern lightweight structures, such as used in aerospace, automotive industry or in wind power plants. Those materials provide high weight savings and increase the efficiency of a structure significantly. Therefore, various efforts are made to continuously improve the quality of the matrix and the fibres. By embedding nanoparticles into the epoxy matrix, the mechanical properties as well as the electrical and thermal characteristics can significantly be improved [1]. In most cases these nano-sized particles are produced as dry powders not ACCEPTED MANUSCRIPT 2 as single primary particles but rather as particle collectives consisting out of several primary particles. ACCEPTED MANUSCRIPTFor the application in reinforced composites the particles must be suspended in epoxy resin as separately dispersed primary particles or in a certain aggregate size. Generally, the influencing parameters to break up the aggregates in a dispersion process can be divided into the stress mechanism, the intensity and the frequency of the dispersing machine itself, the properties of the dispersed particles (e.g. the particleparticle-interactions) the properties of the homogenous phase and the particle-resin-interactions. Besides the effect of the chosen dispersing machine the optimization of the dispersing process was investigated by applying modified particle surfaces and varying the fluid properties. The results show that the surface properties of the particles must fit to the epoxy resin properties and the attractive forces between the primary particles must be reduced or the stabilization improved, respectively. An indication for an improved stabilization and adjustment of the particles surface properties to the fluid properties can be obtained by measurements of the contact angle and the rheological properties. Generally, an increase of viscosity and mass fraction of the product leads to a higher energetic efficiency of the dispersion process in the stirred media mill and three-roll-mill.

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Section: Results and Discussion-effect Of Fluid-particle-interactionsmentioning

confidence: 99%

Effect of fluid–particle-interactions on dispersing nano-particles in epoxy resins using stirred-media-mills and three-roll-mills

Schilde

Nolte

Arlt

et al. 2010

Composites Science and Technology

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“…Coatings on the filler particle could affect the ease with which a filler particle would move in the warmed resin fluid. Particles not silanated would be more difficult to move than those that are coated, as silanization imparts better resin wetting and, thus, ease of fluid movement around the particle 31) . In the past, heavily filled materials, particularly packable materials, have had difficulty in achieving good marginal adaptation 26) .…”

Section: ⅳ Discussionmentioning

confidence: 99%

“…Therefore, when using composite resin in the clinic, preheating the composite resin could be recommended to have enhanced physical properties of it. [J Kor Acad Cons Dent 34(1): [30][31][32][33][34][35][36][37] 2009] …”

mentioning

confidence: 99%

Effect of pre-heating on some physical properties of composite resin

Jin

Kim

2009

J Korean Acad Conserv Dent

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The purpose of this study was to evaluate the effect of pre-heating on some physical properties of composite resin.Eighty extracted, noncarious human molars were used in the present study. Four different temperatures of composite resin were used: 4℃, 17℃, 48℃, and 56℃. The 4℃ and 17℃ values represented the refrigerator storage temperature and room temperature respectively. For 48℃ and 56℃, composite resin was heated to the temperatures. As physical properties of composite resin, shear bond strength, microhardness, and degree of conversion were measured. The data for each group were subjected to one-way ANOVAs followed by the Tukey's HSD test at 95% confidence level.Both in enamel and dentin, among composite resin of 4℃, 17℃, 48℃, and 56℃, the pre-heated composite resin up to 56℃ revealed the highest shear bond strength, and pre-heated composite resin to the higher temperature revealed higher shear bond strength.Microhardness value was also higher with composite resin of higher temperature. Degree of conversion was also higher with composite resin of the higher temperature. In this study, it seems that pre-heating composite resin up to the higher temperature may show higher shear bond strength, higher microhardness value, and higher degree of conversion. Therefore, when using composite resin in the clinic, preheating the composite resin could be recommended to have enhanced physical properties of it. [J Kor Acad Cons Dent 34(1): [30][31][32][33][34][35][36][37] 2009]

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“…Modified particles are often used for different purposes, in general, e.g., for drug delivery [8] or photocatalytic processes [9], but also as fillers of epoxy resins [10][11][12] or for coating applications [13][14][15]. Examples for the latter show how the properties of composites can be enhanced by chemical bonding between the matrix material and the modified filler particles.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of the Mechanical Properties of Nanoparticulate Thin Coatings via Surface Modification and Cross‐Linking Additive

et al. 2017

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The application of modified Al 2 O 3 nanoparticles for thin coatings is investigated to improve especially the mechanical characteristics by cross-linking the particles using an additive, together with the formulation parameters as well as the crosslinking kinetics. In general, the experiments demonstrate that the mechanical properties, like hardness and scratch resistance, can be enhanced via particle surface modification in combination with a cross-linking additive. Specifically, the optimal additive concentration was determined in order to obtain coatings with improved mechanical and constant optical properties. These results were related to the structure formation and cross-linking behavior. Mechanisms were identified for this series of experiments to explain how the particles bond with each other and how the coating structure is formed by using different additive ratios.

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Study on mono-dispersed nano-size silica by surface modification for underfill applications

Cited by 229 publications

References 12 publications

Effect of fluid–particle-interactions on dispersing nano-particles in epoxy resins using stirred-media-mills and three-roll-mills

Effect of fluid–particle-interactions on dispersing nano-particles in epoxy resins using stirred-media-mills and three-roll-mills

Effect of pre-heating on some physical properties of composite resin

Enhancement of the Mechanical Properties of Nanoparticulate Thin Coatings via Surface Modification and Cross‐Linking Additive

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