WO2001048115A1 - Phosphore a persistance elevee incorpore dans un materiau non durcissable - Google Patents

Phosphore a persistance elevee incorpore dans un materiau non durcissable Download PDF

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Publication number
WO2001048115A1
WO2001048115A1 PCT/US2000/042692 US0042692W WO0148115A1 WO 2001048115 A1 WO2001048115 A1 WO 2001048115A1 US 0042692 W US0042692 W US 0042692W WO 0148115 A1 WO0148115 A1 WO 0148115A1
Authority
WO
WIPO (PCT)
Prior art keywords
phosphor
particulate
settable material
domain size
doped
Prior art date
Application number
PCT/US2000/042692
Other languages
English (en)
Inventor
Bradford K. Mortz
Robert H. Miller
Original Assignee
Global Products Sales And Marketing, Llc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Global Products Sales And Marketing, Llc. filed Critical Global Products Sales And Marketing, Llc.
Priority to CA002393713A priority Critical patent/CA2393713A1/fr
Priority to AU49044/01A priority patent/AU4904401A/en
Publication of WO2001048115A1 publication Critical patent/WO2001048115A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C14/00—Glass compositions containing a non-glass component, e.g. compositions containing fibres, filaments, whiskers, platelets, or the like, dispersed in a glass matrix
    • C03C14/006—Glass compositions containing a non-glass component, e.g. compositions containing fibres, filaments, whiskers, platelets, or the like, dispersed in a glass matrix the non-glass component being in the form of microcrystallites, e.g. of optically or electrically active material
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C14/00—Glass compositions containing a non-glass component, e.g. compositions containing fibres, filaments, whiskers, platelets, or the like, dispersed in a glass matrix
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
    • C09K11/025—Use of particular materials as binders, particle coatings or suspension media therefor non-luminescent particle coatings or suspension media
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
    • C09K11/7729—Chalcogenides
    • C09K11/7731—Chalcogenides with alkaline earth metals
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2214/00—Nature of the non-vitreous component
    • C03C2214/16—Microcrystallites, e.g. of optically or electrically active material

Definitions

  • the present invention relates generally to phosphorescent based materials and, more particularly, to a process and product by process for incorporating a long persistent phosphor within a non-settable material.
  • phosphor materials are well known in the art and which provide varying degrees of persistent luminescence.
  • a common objective of phosphor materials is to provide an application for a luminescent light source which takes advantage of intermittent light irradiation and/or the absence of irradiating light on a continuous basis. While the existence of phosphor materials such as above is fairly well known in the art, the recent trend has been to identify useful applications of persistent phosphor which will enable the production of production of sufficient light illumination following an iterative period of light irradiation.
  • a process for incorporating a long persistent phosphor within a non- settable material includes firing a doped phosphor to obtain a phosphor having a persistence that ranges from minutes to hours. The fired phosphor is then ground into a phosphor particulate having a mean domain size. The phosphor particulate is thereafter encapsulated within a water impervious coating material The coated phosphor particulate is then mixed m a specified volume ratio withm the non-settable material
  • a phosphorescent settable formulation includes 0 1 to 30 volume percent of a long persistent doped sulf ⁇ de phosphor particulate having a mean particle domain size of between 1 and 60 microns
  • the particulate has a water impervious silicon oxide or fluoride coating thereover
  • a non-settable material carrier is provided for the particulate
  • a method of forming a phosphorescent solid is also provided based upon setting of an inventive formulation
  • non-settable is defined to mean those substances that reversibly undergo phase transformation without a change in composition or bonding
  • Non-settable materials illustratively include thermoplastics, oils, waxes glasses, solvents, greases, lubricants, ceramics, chalk, metals and metal alloys melting below 600°C It is appreciated that additives to the non-settable material carrier illustratively optionally include antioxidants, fillers, dyes, pigments, and plasticizers
  • the long persistent phosphorescent material is constituted by any of a number of various chemical compositions as are known in the art
  • the phosphor is typically provided as a powde ⁇ zed or granulate material and, in one instance, may include a lime green phosphor produced under the commercial name Nemoto Lummova and consisting of a strontium aluminate material Additional Luminova colors include blue and which is constituted by a recipe of a Calcium Strontium Alummate, and which is doped with Europium
  • Other phosphors may specifically include a strontium sulfide matenal which is fired m an inert crucible at a selected elevated temperature and for a determined time period
  • a dopant is added to the phosphor While dopant precursors are typically slurried with phosphor precursors prior to firing, it is appreciated that dopants are also intercalated into a phosphor through exposing a fired phosphor to a dopant Post firing dopant addition illustratively occurs through solution surface coating or ion implantation Experimentation of different dopants has determined that a Europium dopant will achieve a peisistent phosphor having an orange/red color Dopants are typically present from 0 1 to 5 atomic percent Often it is desirous to include a second dopant to enhance persistence lifetimes or modify phosphor color As is also well known in the art, additional types of dopants may include alumina, lanthane
  • the persistent phosphor composition is dried and is retrieved in a rock-like form.
  • a subsequent crushing and grinding operation reduces the particle domain size to a preferred range of 9 to 60 microns. More preferably, the particle mean domain size is from 9 to 45 microns.
  • Certain paint or solvent based applications require particular sizes to be reduced to, in some instances, down to 1 micron in size.
  • a first type of encapsulation is provided by a silicon oxide applied during a firing temperature of 800°C.
  • a fluoride material may be applied contemporaneously with or separately from the silicon oxide.
  • a firing temperature of approximately 700°C is best suited for application of fluoride.
  • Other encapsulation techniques may employ organic chlorosilanes in hexane or heptane solvents.
  • the process steps in which the encapsulation of the material is accomplished typically includes mixing the coating powder with the substrate powder in an appropriate ratio, firing the mixed powder at the prescribed temperature for a defined time, washing the fired powder to remove the uncoated portion of the core powder, and drying the washed powder Additional encapsulation techniques are illustratively detailed in U S Patents 4,710,674, 5,049,408, 5,196,229, 5,1 18,529, 5,1 13,1 18 and 5,220,341

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Inorganic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Luminescent Compositions (AREA)

Abstract

L'invention concerne un procédé permettant l'incorporation d'un phosphore à persistance élevée dans une matière non durcissable. Ce procédé consiste à chauffer un phosphore dopé afin d'obtenir un phosphore présentant une persistance allant de plusieurs minutes à plusieurs heures. On pulvérise ensuite ce phosphore cuit de manière à obtenir des particules de phosphore présentant une taille de domaines moyenne. Cette taille de domaines moyenne se situe normalement entre 1 et 60 microns. On encapsule ensuite ces particules de phosphore dans un matériau d'enrobage étanche à l'eau, tel que l'oxyde ou le fluorure de silicium. On mélange ensuite les particules de phosphore enrobées avec une matière non durcissable, à raison d'une proportion donnée. Dans les formulations caractéristiques cette proportion est comprise entre 0,1 et 30 pour-cent en volume de particules.
PCT/US2000/042692 1999-12-07 2000-12-07 Phosphore a persistance elevee incorpore dans un materiau non durcissable WO2001048115A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002393713A CA2393713A1 (fr) 1999-12-07 2000-12-07 Phosphore a persistance elevee incorpore dans un materiau non durcissable
AU49044/01A AU4904401A (en) 1999-12-07 2000-12-07 Long persistent phosphor incorporated within a non-settable material

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US16943399P 1999-12-07 1999-12-07
US60/169,433 1999-12-07

Publications (1)

Publication Number Publication Date
WO2001048115A1 true WO2001048115A1 (fr) 2001-07-05

Family

ID=22615670

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/042692 WO2001048115A1 (fr) 1999-12-07 2000-12-07 Phosphore a persistance elevee incorpore dans un materiau non durcissable

Country Status (4)

Country Link
CN (1) CN1414996A (fr)
AU (1) AU4904401A (fr)
CA (1) CA2393713A1 (fr)
WO (1) WO2001048115A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6932920B2 (en) * 2002-10-17 2005-08-23 Son Corporation Complex material, artificial light-emitting skin and artificial light-emitting body

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4684592A (en) * 1984-04-06 1987-08-04 Fuji Photo Film Co., Ltd. Stimulable phosphor sheet
US5418062A (en) * 1990-04-25 1995-05-23 Minnesota Mining And Manufacturing Company Encapsulated electroluminescent phosphor particles
US5811822A (en) * 1997-04-29 1998-09-22 The United States Of America As Represented By The Secretary Of The Navy Optically transparent, optically stimulable glass composites for radiation dosimetry
US6071432A (en) * 1998-03-31 2000-06-06 Sarnoff Corporation Long persistence red phosphors
US6197712B1 (en) * 1999-04-01 2001-03-06 Chris Odlum Method for producing phosphorescent glass artifacts

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4684592A (en) * 1984-04-06 1987-08-04 Fuji Photo Film Co., Ltd. Stimulable phosphor sheet
US5418062A (en) * 1990-04-25 1995-05-23 Minnesota Mining And Manufacturing Company Encapsulated electroluminescent phosphor particles
US5811822A (en) * 1997-04-29 1998-09-22 The United States Of America As Represented By The Secretary Of The Navy Optically transparent, optically stimulable glass composites for radiation dosimetry
US6071432A (en) * 1998-03-31 2000-06-06 Sarnoff Corporation Long persistence red phosphors
US6197712B1 (en) * 1999-04-01 2001-03-06 Chris Odlum Method for producing phosphorescent glass artifacts

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6932920B2 (en) * 2002-10-17 2005-08-23 Son Corporation Complex material, artificial light-emitting skin and artificial light-emitting body

Also Published As

Publication number Publication date
CN1414996A (zh) 2003-04-30
CA2393713A1 (fr) 2001-07-05
AU4904401A (en) 2001-07-09

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