Novel Colloidal Forming of Ceramics

Novel Colloidal Forming Of Ceramics 2011
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Actions Shares. The use of the colloidal system of any of claims 1 to 4 as Nanofiltationsmembran or as part of a. EP EPA1 en USA1 en.

EPA1 en. JPA en. AUA1 en. DEU1 en. WOA1 en. Producing micro- or nano-scale elements such as film or hollow fibre for use as separating membranes in fuel cells, involves making materials with nano-particles of different size and combining them, e.

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High temperature- and moisture-stable materials with improved insulating properties based on foams and disperse silicates. DEA1 en. Producing a dispersion of nanoparticles useful for producing coatings and as a binder comprises introducing primary nanoparticles into a dispersion medium containing a neutral or basic polymer.

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Organic-inorganic hybrid material, optical thin layer of this material, optical material comprising the same, and method for making. Non-agglomerated aqueous suspensions of nanoscale rutile particles useful in plastics, lacquers, sun creams, dyes, pigments or catalysts or as a starting material for production of finely-divided rutile powder. Method for producing hollow fibrous membranes for microfiltration, ultrafiltration or gas separation. A process for the preparation of elements, in particular with at least one dimension in the micro- or nano range, and correspondingly produced element, particularly micro- or nano-hollow fiber.

Guliants et al.

Colloidal Silica

Ng et al. Yan et al.

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Preparation of poly vinylidene fluoride pvdf ultrafiltration membrane modified by nano-sized alumina Al2O3 and its antifouling research. Yang et al. EPB1 en. Vatanpour et al. TiO2 embedded mixed matrix PES nanocomposite membranes: Influence of different sizes and types of nanoparticles on antifouling and performance. USB2 en. Manoharan et al. USA en. Gonzenbach et al. RUC2 en. Ishizaki et al. Guizard et al. Design of nanosized structures in sol-gel derived porous solids.

Applications in catalyst and inorganic membrane preparation. Imhof et al. Ke et al. CNC en. Microporous polytetrafluoroethylene PTFE bodies with filler, and its mfg. Arsuaga et al. Influence of the type, size, and distribution of metal oxide particles on the properties of nanocomposite ultrafiltration membranes. Wei et al. This includes the nanoscale self-assembly of the components and the development of hierarchical structures. Aggregation in colloidal dispersions or stable suspensions has been characterized by the degree of interparticle attraction.

This leads to a description using such parameters as the degree of branching, ramification or fractal dimensionality. A reversible growth model has been constructed by modifying the cluster-cluster aggregation model with a finite inter-particle attraction energy. In systems where forces of attraction forces are buffered to some degree, a balance of forces leads to an equilibrium phase separation , that is particles coexist with equal chemical potential in two distinct structural phases. The role of the ordered phase as an elastic colloidal solid has been evidenced by the elastic or reversible deformation due to the force of gravity.

This deformation can be quantified by the distortion of the lattice parameter , or inter-particle spacing. Periodic ordered lattices behave as linear viscoelastic solids when subjected to small amplitude mechanical deformations. Structurally, most systems exhibit a clear instability toward the formation of periodic domains of relatively short-range order Above a critical amplitude of oscillation, plastic deformation is the primary mode of structural rearrangement.

Equilibrium phase transitions e.

WO2004022505A1 - Colloidal system with ceramic nanoparticles - Google Patents

Using a single colloidal crystal, phonon dispersion of the normal modes of vibration modes were investigated using photon correlation spectroscopy , or dynamic light scattering. This technique relies on the relaxation or decay of concentration or density fluctuations. These are often associated with longitudinal modes in the acoustic range. A distinctive increase in the sound wave velocity and thus the elastic modulus by a factor of 2.

Using a single body-centered cubic colloidal crystal, the occurrence of Kossel lines in diffraction patterns were used to monitor the initial nucleation and subsequent motion caused distortion of the crystal. Continuous or homogeneous deformations occurring beyond the elastic limit produce a 'flowing crystal', where the nucleation site density increases significantly with increasing particle concentration.

The same technique was used to evaluate the crystallization process near the edge of a glass tube. The former might be considered analogous to a homogeneous nucleation event—whereas the latter would clearly be considered a heterogeneous nucleation event, being catalyzed by the surface of the glass tube. Small-angle laser light scattering has provided information about spatial density fluctuations or the shape of growing crystal grains.