Mesoporous silica reinforced by silica nanoparticles to enhance mechanical performance

Luo, Jen-Tsung; Wen, Hua-Chiang; Chang, Yao-Tang; Wu, Wen−Fa; Chou, Chang‐Pin

doi:10.1016/j.jcis.2006.09.066

Cited by 9 publications

(9 citation statements)

References 19 publications

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“…Anodic porous alumina (AAO) [50,[126][127][128][129]135], nanoporous silica [136][137][138][139][140][141], and mesoporous honeycomb-shaped activated carbon [142] were well-known nano-scale honeycombs. To maintain microstructural integrity in practical applications, characterizing their mechanical properties was of great importance.…”

Section: Mechanics Of Micro-and Nano-honeycombsmentioning

confidence: 99%

“…Further, higher consolidation has been found to provide a more rigid structure, helpful for eliminating the more hydrothermally sensitive pore surface Si-OH bonds to the benefit of the formation of more hydro-resistive Si-O-Si bonds [146,147]. Several methods have been developed to enhance pore wall consolidation, e.g., surfactant removal processes [140,146], silica nanoparticle [141], salt [148] or alumina additives [149], and humidity treatments [150].…”

Section: Mechanics Of Micro-and Nano-honeycombsmentioning

confidence: 99%

“…Bending fatigue Rectangular fracture shape [128] Micelle-templated silicates 35nm,80nm Compression Brittle crushing [136] Nano-structured glass fibers 3nm Simulated nanoindentation - [137] Mesoporous silica 5nm Unilateral external pressure Destroy [138] Mesoporous silicaNanoindentation Elastic modulus， hardness [139][140][141] Carbon/epoxy composite Small aircraft [221,222] Polypropylene (PP) Vehicle [223] Carbon/epoxy laminate Airfoil [224,225] Honeycomb structural support for larvae storage of honey and pollen [435,436] Bone structural support protect for body and blood cell formation minerals storage [437] Red-bellied woodpecker beak structural support amazingly efficient shock energy absorption [438] Tree trunk and root structural support anchoring nutrient transport [439] Butterfly wing structural support structural color superhydrophobicity self-cleaning properties directional adhesive functions chemical sensing capabilities [440] …”

Section: -35nmmentioning

confidence: 99%

See 2 more Smart Citations

Bioinspired engineering of honeycomb structure – Using nature to inspire human innovation

Zhang

Yang

et al. 2015

Progress in Materials Science

612

328

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Section: Mechanics Of Micro-and Nano-honeycombsmentioning

confidence: 99%

Section: Mechanics Of Micro-and Nano-honeycombsmentioning

confidence: 99%

Section: -35nmmentioning

confidence: 99%

See 1 more Smart Citation

Bioinspired engineering of honeycomb structure – Using nature to inspire human innovation

Zhang

Yang

et al. 2015

Progress in Materials Science

612

328

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“…Usually, in order to effectively improve the mechanical strength of a composite, a large fraction of fillers in micron have to be loaded into the matrix, which results in a great deterioration in both processability and mechanical toughness of the composite. In addition, since the filler size reduced from the micron to nano‐scale, both the specific surface area and surface energy of fillers would enhance sharply, which are responsible for the enlargement of the interface area and the enhancement of interfacial interaction between fillers and polymer matrix 21–25 . From the perspective of mechanical property, when a composite is applied to an external load, a strong interfacial interaction is able to provide a highly efficient stress transferring from soft polymer to hard fillers.…”

Section: Introductionmentioning

confidence: 99%

Study on structural and functional properties of porous SiO₂ core‐shell construction/polyethylene nanocomposites with enhanced interfacial interaction

Zhang

Zhao

Yang

et al. 2022

J of Applied Polymer Sci

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The addition of inorganic particles can endow polymer matrices with different new features, thereby realizing an optimization to the structural and functional properties of composite. The overall properties of composites are greatly influenced by both fillers dispersion and fillers-polymer interfacial interaction. However, to simultaneously improve these mentioned two issues is still a critical challenge in the field of polymer-based nanocomposite. Herein, a typical core-shell structured mesoporous silica-coated silica (SiO 2 @mSiO 2 ) construction was successfully synthesized by using a bi-phase method. The SiO 2 @mSiO 2 filled polyethylene (PE) nanocomposite was fabricated through a precisely controlled melt-mixing approach. Benefiting from the additional mesoporous SiO 2 shell, both the dispersion of SiO 2 @mSiO 2 and the SiO 2 @mSiO 2 -PE matrix interfacial interaction are improved. Moreover, the stress-strain behavior, temperaturedependent mechanical property, thermal stability, and electrical insulating property of SiO 2 @mSiO 2 /PE composite were studied in detail. It is found that

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“…In considering the mechanical strength of mesostructured films, special attention must be given to the possibility of reinforcing the film structure through incorporation of hard nanoparticles such as silica or zirconia or with carbon nanotubes, since porosity tends to degrade the mechanical strength of materials. Using nanoparticles to reinforce mesoporous films has not been extensively studied, but the few reports in literature indicate improvements in mechanical properties and the ability to increase strength, stiffness, and the maximum attainable crack-free film thickness [133,134].…”

Section: Enhancing Mechanical Properties Through Matrix Reinforcementmentioning

confidence: 99%

Mesostructured Hydrophobic-Oleophobic Silica Films for Sustained Functionality in Tribological Environments

Kessman¹

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The primary goal of this research was to synthesize water-and oil-repellent coatings that offer sustained functionality and durability. Engineered low surface energy materials generally suffer from a lack of mechanical robustness, which makes them susceptible to damage by abrasive wear. Fluorinated silanes are often combined with alkoxide precursors via sol-gel cocondensation to create coatings with high hardness and good substrate adhesion. However, a common problem with these materials is that the organic moieties that provide low surface energy also become surface segregated and highly concentrated at the solid-air interface. With such a structure, mechanical removal of the top surface by abrasion, for example, reveals subsurface areas that are then much less concentrated in terms of functional chemistry. The material developed in this study was designed to overcome this problem by means of a tailored and templated mesostructure that effectively encapsulated the low surface energy functional moieties, and thus achieves sustained functionality during abrasive wear. This material, applied as a thin coating to a variety of substrates, has the potential to reduce waste and pollution and the environmental degradation of materials and structures. Improving the performance of such materials can benefit a wide variety of applications. These include optoelectronic devices including photovoltaic panels; automobile and aircraft; architectural structures; the chemical, food, and medical industries for hygienic and anti-fouling requirements; textiles; and household applications. This approach has further implications in areas such as boundary lubrication and drug delivery systems. Hydrophobic-oleophobic mesoporous fluorinated silica films were synthesized via sol-gel cocondensation and coated on glass substrates. Fluorosilane and surfactant template concentrations were varied to elucidate the effect of organic functionality and porosity on performance. Structural, chemical, mechanical, surface, and tribological properties were investigated to examine the performance of functionalized mesostructured thin films in abrasive environments. Analytical techniques included XPS depth profiling, porosimetry, AFM and friction force microscopy, nanoindentation, contact angle goniometry, and stylus profilometry. Controlled abrasion was conducted using a lab-built instrument. Hydrophobic and oleophobic properties were monitored ex-situ during abrasion to observe and quantify changes in functionality as the material is worn. Experimental results show that surfactant templating aids in generating an internal mesostructure that facilitates encapsulation of functional moieties. This encapsulation allows exposed surfaces to be sacrificially worn away while maintaining much of the original functionality. The results of tribological measurements, as observed through abrasive wear testing, friction force mapping, and wear rate calculations, suggest that the low-friction surface generate by fluorosilane moieties grafted to internal pore surfaces...

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Mesoporous silica reinforced by silica nanoparticles to enhance mechanical performance

Cited by 9 publications

References 19 publications

Bioinspired engineering of honeycomb structure – Using nature to inspire human innovation

Bioinspired engineering of honeycomb structure – Using nature to inspire human innovation

Study on structural and functional properties of porous SiO₂ core‐shell construction/polyethylene nanocomposites with enhanced interfacial interaction

Mesostructured Hydrophobic-Oleophobic Silica Films for Sustained Functionality in Tribological Environments

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Mesoporous silica reinforced by silica nanoparticles to enhance mechanical performance

Cited by 9 publications

References 19 publications

Bioinspired engineering of honeycomb structure – Using nature to inspire human innovation

Bioinspired engineering of honeycomb structure – Using nature to inspire human innovation

Study on structural and functional properties of porous SiO2 core‐shell construction/polyethylene nanocomposites with enhanced interfacial interaction

Mesostructured Hydrophobic-Oleophobic Silica Films for Sustained Functionality in Tribological Environments

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Study on structural and functional properties of porous SiO₂ core‐shell construction/polyethylene nanocomposites with enhanced interfacial interaction