Mecanoluminescent material, method for manufacturing mecanoluminescent material, mecanoluminescent paint composition, resin composition, and mecanoluminescent article

Patent metadata

Field	Value
Publication number	US-2017002264-A1
Application number	US-201415101655-A
Country	US
Kind code	A1
Filing date	Dec 5, 2014
Priority date	Dec 6, 2013
Publication date	Jan 5, 2017
Grant date	—

Abstract

A mechanoluminescent material is obtained by mixing a phosphate compound and europium-activated strontium aluminate particles into slurry; grinding the slurry into ground slurry; and drying the ground slurry, wherein the rate of change calculated from a formula (A−B)/A×100 is 10% or less, where A is the strontium content in the obtained mechanoluminescent material, and B is the strontium content in the mechanoluminescent material after 168 hours of storage in an atmosphere at a temperature of 85° C. and a relative humidity of 85%.

First claim

1 . A mechanoluminescent material obtained by mixing a phosphate compound and europium-activated strontium aluminate particles into slurry, grinding the slurry into ground slurry, and drying the ground slurry,
wherein the rate of change calculated from a formula (A−B)/A×100 is 10% or less, where A is the strontium content in the obtained mechanoluminescent material, and B is the strontium content in the mechanoluminescent material after 168 hours of storage in an atmosphere at a temperature of 85° C. and a relative humidity of 85%.

2 . The mechanoluminescent material according to claim 1 ,
wherein the mechanoluminescent material is obtained by the grinding in a reaction vessel provided with a grinding-media-stirring grinder under a condition that 0.1≦G≦20 where G is a relative centrifugal acceleration in m/sec 2 that is imparted to the grinding media.

3 . The mechanoluminescent material according to claim 2 ,
wherein the mechanoluminescent material is obtained by the grinding under a condition that 0.1≦G≦10 where G is a relative centrifugal acceleration in m/sec 2 that is imparted to the grinding media.

4 . The mechanoluminescent material according to claim 1 ,
wherein the mechanoluminescent material is obtained by the grinding for 5 minutes to less than 180 minutes.

5 . The mechanoluminescent material according to claim 1 ,
wherein the mechanoluminescent material is obtained by the grinding in a reaction vessel provided with a grinding-media-stirring grinder under a condition that a value obtained by multiplying the relative centrifugal acceleration G (m/sec 2 ) that is imparted to the grinding media by the grinding time (hr) is in the range of 0.01 to less than 10.

6 . The mechanoluminescent material according to claim 1 ,
wherein the mechanoluminescent material is obtained through a heat treatment in an atmosphere at 120° C. to 300° C. after the drying.

7 . The mechanoluminescent material according to claim 1 ,
wherein the mechanoluminescent material contains 0.2 to 5.0 parts by weight of phosphorus, as elemental phosphorus, derived from the phosphate compound relative to 100 parts by weight of the europium-activated strontium aluminate particles.

8 . The mechanoluminescent material according to claim 1 ,
wherein the phosphate is at least one selected from the group consisting of ammonium phosphate, sodium phosphate, potassium phosphate, sodium polyphosphate, sodium hexametaphosphate, and phosphoric acid.

9 . A method for producing a mechanoluminescent material, comprising the steps of:
mixing a phosphate compound and europium-activated strontium aluminate particles into slurry; grinding the slurry into ground slurry; and drying the ground slurry.

10 . A mechanoluminescent coating composition comprising the mechanoluminescent material according to claim 1 .

11 . A resin composition comprising the mechanoluminescent material according to claim 1 .

12 . A mechanoluminescent article formed from the resin composition according to claim 11 .

Assignees

• Sakai Chemical Industry Co

Inventors

• KAWATAKI Takahiro
• Mori Kenji
• Kobayashi Keita
• Nakao Hiroshi
• TOJO Tomonori

Classifications

• C09K11/7734 Primary

  Aluminates · CPC title

• C09K11/70

  containing phosphorus · CPC title

• C09K11/08 Primary

  containing inorganic luminescent materials · CPC title

• C09D7/61

  inorganic · CPC title

• C09D5/22

  Luminous paints {(luminescent compositions C09K11/00)} · CPC title