公开(公告)号：US20150147257A1

公开(公告)日：2015-05-28

申请号：US14405858

申请日：2013-05-29

Applicant: DOW CORNING CORPORATION

Inventor： Jeffrey Anderson ,  James A. Casey ,  Vasgen Aram Shamamian

IPC: B01J19/00 ,  C01B33/02 ,  C01B33/00 ,  C01B33/021

CPC classification number: B01J19/00 ,  B01J2/04 ,  B01J19/0006 ,  B01J2219/00164 ,  C01B33/00 ,  C01B33/02 ,  C01B33/021 ,  C09K11/59 ,  H01J37/32082 ,  H01J2237/339

Abstract: A system for preparing nanoparticles is described. The system can include a reactor for producing a nanoparticle aerosol comprising nanoparticles in a gas. The system also includes a diffusion pump that has a chamber with an inlet and an outlet. The inlet of the chamber is in fluid communication with an outlet of the reactor. The diffusion pump also includes a reservoir in fluid communication with the chamber for supporting a diffusion pump fluid and a heater for vaporizing the diffusion pump fluid in the reservoir to a vapor. In addition, the diffusion pump has a jet assembly in fluid communication with the reservoir having a nozzle for discharging the vaporized diffusion pump fluid into the chamber. The system can further include a vacuum pump in fluid communication with the outlet of the chamber. A method of preparing nanoparticles is also provided.

Abstract translation: 描述了制备纳米颗粒的系统。 该系统可以包括用于产生包含气体中的纳米颗粒的纳米颗粒气溶胶的反应器。 该系统还包括具有入口和出口的室的扩散泵。 室的入口与反应器的出口流体连通。 扩散泵还包括与腔室流体连通的用于支撑扩散泵流体的储存器和用于将储存器中的扩散泵流体蒸发成蒸气的加热器。 此外，扩散泵具有与储存器流体连通的喷射组件，其具有用于将蒸发的扩散泵流体排放到室中的喷嘴。 该系统还可以包括与腔室的出口流体连通的真空泵。 还提供了制备纳米颗粒的方法。

公开(公告)号：US10358597B2

公开(公告)日：2019-07-23

申请号：US14417913

申请日：2013-07-30

Applicant: DOW CORNING CORPORATION

Inventor： James A. Casey ,  Ludmil M. Zambov

IPC: C09K11/59 ,  C01B33/02

Abstract: A method of improving the photoluminescence of silicon nanoparticles is provided along with a description of the silicon nanoparticle compositions prepared therefrom. The method generally comprises exposing a composition comprising silicon nanoparticles having a mean particle diameter not greater than 5 nm and a fluid to a non-ambient condition selected from (i) elevated temperature, (ii) elevated humidity, (iii) elevated pressure exerted by an oxygen-containing gas, (iv) a hydrogen plasma, (v) hydrogen gas, (vi) ultraviolet radiation, and (vii) and a combination of at least two of (i)-(vi). Optionally, the silicon nanoparticles may be prepared by a gas phase reaction. The exposure of the silicon nanoparticle compositions to the non-ambient condition results in improved photoluminescence. In particular, the exposed nanoparticles exhibit increased maximum emission intensity and luminescent quantum efficiency. Moreover, these improvements are accompanied by a blue shift in the emitted light to a shorter wavelength.

公开(公告)号：US20140339474A1

公开(公告)日：2014-11-20

申请号：US14278502

申请日：2014-05-15

Applicant: DOW CORNING CORPORATION

Inventor： James A. Casey ,  Steven Swier ,  David Witker

IPC: C09K11/59

CPC classification number: C09K11/59 ,  C09K11/02

Abstract: A silicone composition comprises a curable silicone composition and nanoparticles. The nanoparticles of the silicone composition are produced via a plasma process. A cured product formed from the silicone composition is also disclosed. The cured product includes the nanoparticles dispersed therein.

Abstract translation: 硅氧烷组合物包含可固化的有机硅组合物和纳米颗粒。 硅氧烷组合物的纳米颗粒通过等离子体工艺制备。 还公开了由硅氧烷组合物形成的固化产物。 固化产物包括分散在其中的纳米颗粒。

公开(公告)号：US20150218443A1

公开(公告)日：2015-08-06

申请号：US14417913

申请日：2013-07-30

Applicant: DOW CORNING CORPORATION

Inventor： James A. Casey ,  Ludmil M. Zambov

IPC: C09K11/59 ,  C01B33/02

CPC classification number: C09K11/59 ,  C01B33/02

Abstract: A method of improving the photoluminescence of silicon nanoparticles is provided along with a description of the silicon nanoparticle compositions prepared therefrom. The method generally comprises exposing a composition comprising silicon nanoparticles having a mean particle diameter not greater than 5 nm and a fluid to a non-ambient condition selected from (i) elevated temperature, (ii) elevated humidity, (iii) elevated pressure exerted by an oxygen-containing gas, (iv) a hydrogen plasma, (v) hydrogen gas, (vi) ultraviolet radiation, and (vii) and a combination of at least two of (i)-(vi). Optionally, the silicon nanoparticles may be prepared by a gas phase reaction. The exposure of the silicon nanoparticle compositions to the non-ambient condition results in improved photoluminescence. In particular, the exposed nanoparticles exhibit increased maximum emission intensity and luminescent quantum efficiency. Moreover, these improvements are accompanied by a blue shift in the emitted light to a shorter wavelength.

Abstract translation: 提供了改善硅纳米颗粒的光致发光的方法以及由其制备的硅纳米颗粒组合物的描述。 该方法通常包括将包含平均粒径不大于5nm的硅纳米颗粒和流体的组合物暴露于选自以下的非环境条件：（i）升高的温度，（ii）升高的湿度，（iii）由 含氧气体，（iv）氢等离子体，（v）氢气，（vi）紫外线辐射和（vii）和（i） - （vi）中至少两个的组合。 任选地，硅纳米颗粒可以通过气相反应制备。 硅纳米颗粒组合物暴露于非环境条件导致改善的光致发光。 特别地，暴露的纳米颗粒表现出增加的最大发射强度和发光量子效率。 此外，这些改进伴随着发射的光的蓝移到较短的波长。