CN1263925A

CN1263925A - Long-afterglow photoluminescent composition and its preparing process

Info

Publication number: CN1263925A
Application number: CN 00103309
Authority: CN
Inventors: 章永来
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-02-29
Filing date: 2000-02-29
Publication date: 2000-08-23

Abstract

A long-afterglow photoluminescent composition is prepared from metallic oxide as matrix, less rare-earth compound (Eu : Dy) as activating agent and H3BO4 as fusing agent through high-temp calcine. Its advantages are no poison and radioactivity, high brightness, long afterglow up to 8-12 hr, and long service life. It can be used to make different luminous products.

Description

A kind of long-afterglow photoluminescent composition and preparation method thereof

The invention discloses a kind of photic long-afterglow material and preparation method thereof, belong to field of light emitting materials.

As everyone knows, existing luminescent material, fluorescent material makes it constantly luminous for a long time by the radiant of luminous substrate (fluorescent substance) ZNS:Cu powder adding artificial radioactivity isotropic substance hard iron 147Pm tritium 3H and thorium 2882TH, and luminosity is decided by contained radioactive species and quantity.This radiant luminescent material is mainly used in the coating compass, and numeral on the instrument clock and watch and pointer guarantee that these instrument show in night and dark place and can observe.This radioactive luminescent material has destruction to tissue and environment, carrying out coating processing back and necessary security measure in use can use, the range of application and the consumption that often need the regulation strictness, its application region is restricted, and existing sulfide embedded photoluminescent material (as Cu and the coactivated ZNS of CO) twilight sunset was lacked 1-2 hours, and the cost height, complicated process of preparation, drawbacks such as life-span weak point.

The objective of the invention is provides a kind of any radioactivity essence that do not use at the above-mentioned weak point that exists, xln by the generating structure novelty makes it have high brightness, reach 8-12 hours time of persistence, and can reach the long after glow luminous material in 10 years work-ing life.

For achieving the above object, I am through concentrating one's attention on the research experiment discovery with aluminium oxide Al for many years ₂O ₃With Strontium carbonate powder SrC ₂O ₃, for matrix is mixed rare earth compound EU ₂O ₃Dy ₂O ₃In crystal, form luminescence center as its activator, carry out and promote the crystallization process of product easily, in reactant, add fusing assistant boric acid H for making building-up reactions ₃BO ₄And SrCl ₂6H ₂O mixes the mol ratio of above-mentioned several starting compounds by the chemical constitution requirement of material equably, then in suitable atmosphere and certain roasting temperature, the high-brightness long persistence embedded photoluminescent material.

Below in conjunction with example in detail content of the present invention:

Implement 1

Raw materials used kind of long-afterglow photoluminescent and consumption are:

Al ₂O ₃ 820g SrC ₂O ₃ 140g

H ₃BO ₄ 56g Eu ₂O ₃ 1.8g

Dy ₂O ₃ 2.2g

With Al ₂O ₃And SrC ₂O ₃With mixing Eu behind the mechanical mill mixing ₂O ₃And Dy ₂O ₃Adding H ₃BO ₄The mixing crucible of packing into is sent in the retort furnace with 1280 ℃ of calcinations 2 hours under certain atmosphere, take out cooling back, and 200 mesh sieves are crossed in the block ball mill pulverizing of luminescent material, long-afterglow luminescent powder, can add in paint, printing ink, plastics, the rubber, make all kinds of light emitting articles.

Example 2

Al ₆O ₁₁Chromatographic aluminium oxide 420g

SrC ₂O ₃ 510g H ₃BO ₄ 26g

SrCl ₂6H ₂O 26g Eu ₂O ₃ 2.5g

Dy ₂O ₃ 3.5g

With Al ₆O ₁₁Chromatographic aluminium oxide is put into the retort furnace roasting and is taken out and SrC after 2 hours ₂O ₃The machinery mixing mixes Eu ₂O ₃Dy ₂O ₃Activator adds SrCl again ₂6H ₂O and H ₃BO ₄Pack into behind the mixing when putting in the crucible retort furnace more than 1200 ℃ in certain atmosphere roasting take out after 2 hours, ball mill pulverizing cross 200 mesh sieves blue light emitting material.

The foregoing description 1 example, 2 embedded photoluminescent material compositions and existing sulfide (the coactivated ZNS of CU CO) are done the contrast experiment, see that its luminosity increases by 200%, and can reach 8-12 hours time of persistence.

Therefore, the present invention has stronger luminosity and long fluorescent lifetime, can be made into various luminous product with the present invention, as various labels, switching push button, artwork, clock and watch, field instrument or telltale, the advertisement helmet, emergency lighting or the like, be widely used in coating, printing ink (printing sheets, coating) compounding rubber plastic cement, enamel porcelain, weaving, trade mark, clothing item, Fishing device, fire-fighting emergency escape system, debate industries such as knowing military equipment, architectural decoration, textile printing and dyeing.

Claims

1, a kind of long-afterglow photoluminescent composition is by aluminum oxide, Al ₂O ₃, chromatographic aluminium oxide Al ₆O ₁₁, Strontium carbonate powder SRC ₂O ₃, europium sesquioxide EU ₂O ₃, dysprosium oxide DY ₂O ₃With boric acid H ₃BO ₄Strontium chloride ScCl ₂6H ₂The O compound constitutes, and it is characterized in that: composition and proportioning (portion rate) are as follows:

Aluminum oxide AL ₂O ₃820g Strontium carbonate powder SrC ₂O ₃140g

Boric acid H ₃BO ₄56g europium sesquioxide EU ₂O ₃1.8g

Dysprosium oxide Dy ₂O ₃2.2g

2, long-afterglow photoluminescent according to claim 1 is characterized in that: composition and proportioning (portion rate) are as follows:

The neutral chromatography aluminium oxide Al ₆O ₁₁420g Strontium carbonate powder SrC ₂O ₃510g

Strontium oxide SrCl ₂6H ₂O 26g boric acid H ₃BO ₄28g

Europium sesquioxide EU ₂O ₃2.5g dysprosium oxide Dy ₂O ₃3.5g

3, long-afterglow photoluminescent according to claim 1, its feature also is the preparation method, and is as follows:

With Al ₂O ₃And SrC ₂O ₃Behind mechanical mixing, mix Eu ₂O ₃And Dy ₂O ₃, adding H ₃BO ₄The mixing crucible of packing into is sent in the retort furnace with 1280 ℃ of roasts 2 hours, and take out the cooling back, and 200 mesh sieves are crossed in the block ball mill pulverizing of luminescent material, long-afterglow luminescent powder.

4, long-afterglow photoluminescent according to claim 1, its feature are that also the preparation method is as follows: with A ₁₆O ₁₁Middle domestic animal chromatographic aluminium oxide is put into 1180 ℃ of roasts of retort furnace and is taken out and SrC after 2 hours ₂O ₃The machinery mixing mixes Eu ₂O ₃, Dy ₂O ₃Add SrCl again ₂6H ₂O and H ₃BO ₄, mixing pack into put in the crucible retort furnace more than 1200 ℃ in certain atmosphere roast take out after 2 hours, ball mill pulverizing cross 200 mesh sieves the blue light emitting powder.