Nano glass powder and use thereof, particularly multicomponent glass powder with a mean particle size of less than 1 [mu]m

A technology of glass powder and average particle size, which is applied in glass forming, nanotechnology, nanotechnology, etc., and can solve the problem of not getting glass powder

Inactive Publication Date: 2007-12-26
SCHOTT AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through the milling disclosed in the above-mentioned documents, no glass powder with an average particle size corresponding to nanoparticles can be obtained

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] Example 1 relates to nanoglass powders which are incorporated into polymer matrices and produce an antibacterial effect of polymer-nanoglass-composites-active ingredients. According to Example 1, 0.1% by weight of nano-glass powder with a particle size of less than 1 μm was added to a polystyrene matrix in the proportion of Example 2 in Table 1 and extruded into a flat plate. The antimicrobial effect of the surface will be tested according to ASTM standards. The reduction of the test bacteria (E. coli, C. albicans) was determined to be more than 2 orders of magnitude (log-stufen).

[0096] According to Example 2, according to Example 1 in Table 1, 0.1% by weight of bioactive nano-glass powder with a particle size of less than 1 nm is included for the formulation of a deodorant. Significant sweat reduction (Schweissreduktion) was observed.

[0097] In Example 3, 50% by weight of the nanoglass powder according to the present invention was added to the dental resin. Typ...

Embodiment 5

[0099] Example 5 relates to a solder glass consisting of 70% by volume of nanoglass powder having the composition of Example 9 in Table 1 and 30% by volume of an inert filler (such as cordierite) for expansion matching with a particle size of less than 1 μm. )composition. The resulting nanocomposite glass solder has a melting temperature that is about 50°C lower than that of the same starting material mixture.

Embodiment 6

[0100] Example 6 relates to a polymer-glass composition wherein 5, 10, 20% by weight of a fluoropolymer is mixed with a nanopowder having a lead silicate glass composition with a refractive index of n=1.9, respectively. Due to the fraction of nanopowders in the fluoropolymer, the synthetic material shifts to a higher value of the refractive index.

[0101] In Example 7, in order to achieve UV shielding, 5% by weight of nano-glass powder with a particle size of less than 1 μm and a glass component containing 2% by weight of TiO2 were added to the sunscreen formulation.

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Abstract

The invention relates to a glass powder or a glass-ceramic powder comprising multicomponent glasses with at least three elements, and is characterized in that the glass powder or a glass-ceramic powder has a mean particle size of less than 1 mum, preferably less than 0.1 mum, particularly preferred less than 10 nm.

Description

technical field [0001] The present invention relates to multicomponent glasses having at least three elements, the average particle size of which is less than 1 μm, preferably less than 0.1 μm, particularly preferably less than 10 nm. Glass having such an average particle size is also called nanopowder. In addition to multi-component glasses, the present invention also includes methods of making such glasses and uses thereof. Background technique [0002] Inorganic nanopowders are well known and useful for SiO 2 of non-crystalline components and e.g. TiO 2 or the crystalline composition of ZnO. Involves SiO 2 -Nano powder can refer to Aerosil product of Degussa company. [0003] Also disclosed are CeO-nanoparticles for polishing suspensions from Nanophase (USA), for example, and ZrO from Nanogate (Germany) 2 - Nanoparticles or Al 2 O 3 nanoparticles. [0004] Metal nanoparticles are known such as silver and silver alloys. Such nanoparticles are used as antibacteria...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C12/00C03B19/10B82B1/00C03CC03C3/00C03C4/00C08K7/20C23C14/06H01Q17/00
CPCC03B19/102C03C12/00B82Y30/00B33Y70/00A61P31/00
Inventor 若泽·齐默尔约翰·戴梅尔马蒂亚斯·林特苏珊·凯斯勒约恩·贝辛格卡里内·塞内沙尔-默茨
Owner SCHOTT AG
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