摘要:
The present invention relates to a nano-diamond dispersion solution and a method of preparing the same. The method of preparing a nano-diamond dispersion solution comprises the following steps: providing a nano-diamond aggregation; mixing the nano-diamond aggregation with a metal hydroxide solution and stirring the mixture such that the nano-diamond aggregation is separated, to obtain a mixture solution; stabilizing the mixture solution such that the mixture solution is separated into a supernatant and precipitates; and extracting the supernatant and precipitates.
摘要:
Beschrieben wird ein Verfahren zur chemomechanischen Oberflächenmodifizierung von Partikeln, bei dem Partikel in einem Dispergiermittel in Anwesenheit von einem oder mehreren Modifizierungsmitteln mechanisch beansprucht werden, wobei mindestens ein Modifizierungsmittel zumindest teilweise an die mechanisch beanspruchten Partikel chemisch gebunden wird.
摘要:
Beschrieben wird ein Verfahren zur chemomechanischen Oberflächenmodifizierung von Partikeln, die durch Flammpyrolyse hergestellt sind, wobei flammpyrolytisch hergestellte Partikel in einem Dispergiermittel in Anwesenheit eines Modifizierungsmittels einer mechanischen Beanspruchung ausgesetzt werden, und wobei das Modifizierungsmittel zumindest teilweise an die gescherten Partikel chemisch gebunden wird.
摘要:
Beschrieben wird ein Verfahren zur chemomechanischen Oberflächenmodifizierung von Partikeln, bei dem Partikel in einem Dispergiermittel in Anwesenheit von einem oder mehreren Modifizierungsmitteln mechanisch beansprucht werden, wobei mindestens ein Modifizierungsmittel zumindest teilweise an die mechanisch beanspruchten Partikel chemisch gebunden wird.
摘要:
A method of preparing a nanoparticle having a particle size of 1 nm to 1 µm, said method comprising continuously supplying a solution containing a particle-forming precursor into a micro channel having a diameter of 1 µm to 1 mm, said micro channel being disposed in a heating zone. The solution is heated rapidly up to a reaction initiation temperature to cause a reaction in said solution. The solution is rapidly cooled to prepare the nanoparticle.
摘要:
Dispersions containing a liquid vehicle (which can be aqueous, semi-aqueous or non-aqueous), organic or inorganic particles (or mixtures) that are insoluble in the liquid vehicle and a polymeric dispersant, preferably a structured polymeric dispersant, having one or more segments soluble in the liquid vehicle and one or more segments insoluble in the liquid vehicle, have improved stability when the insoluble segment(s) contains cross-linking groups which are cross-linked to itself or a cross-linking compound such as a polyfunctional monomer, oligomer or polymer to form an encapsulation network that entraps the particles which are particularly useful for paints or inks in coating and printing applications.
摘要:
The invention provides a method of preparing a dispersion of a fumed metal oxide in a liquid carrier comprising the following sequential steps: (a) providing a liquid carrier at a pH that effects dissolution of the metal oxide at a rate the same as or greater than the metal oxide dissolution rate in water at a pH of about 8, (b) mixing with the liquid carrier, in any order, one or more aliquots of both a fumed metal oxide and a metal ion source to form a dispersion, such that the dispertion does not coagulate, and (c) optionally adjusting the pH of the dispersion to the pH of the liquid carrier in step (a). The method allows for the preparation of the dispersion to be done with a high solids loading and at a high pH. Furthermore, the dispersion can have a shelf-life of at least about 1 hour or more at 25°C.
摘要:
The present invention discloses a method and an apparatus for the manufacture of a colloidal dispersion (125). The apparatus comprises a solution of a first immiscible substance (105) in a first immiscible substance container (110). The solution of the first immiscible substance (105) is applied to a second immiscible substance (115) via a micro-channel orifice (120) of a micro-channel (150) connectable to the first immiscible substance container (110). The micro-channel orifice (120) is immersed in an agitated second immiscible substance (115). The solution of the first immiscible substance (105) is applied to the second immiscible substance (115) by the operation of the pump (145) to manufacture the colloidal dispersion (125).
摘要:
A method of making cerium dioxide nanoparticles includes: a) providing an aqueous reaction mixture having a source of cerous ion, a source of hydroxide ion, a nanoparticle stabilizer, and an oxidant at an initial temperature no higher than about 20° C.; b) mechanically shearing the mixture and causing it to pass through a perforated screen, thereby forming a suspension of cerium hydroxide nanoparticles; and c) raising the initial temperature to achieve oxidation of cerous ion to eerie ion and thereby form cerium dioxide nanoparticles having a mean diameter in the range of about 1 nm to about 15 nm. The cerium dioxide nanoparticles may be formed in a continuous process.