CN1269393A - Fluorescent additive - Google Patents
Fluorescent additive Download PDFInfo
- Publication number
- CN1269393A CN1269393A CN 99104576 CN99104576A CN1269393A CN 1269393 A CN1269393 A CN 1269393A CN 99104576 CN99104576 CN 99104576 CN 99104576 A CN99104576 A CN 99104576A CN 1269393 A CN1269393 A CN 1269393A
- Authority
- CN
- China
- Prior art keywords
- light
- additive
- fluorescence
- film
- absorb
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Abstract
This invented fluorescent additive is an organic compound containing Eu, La and Gd. Said additive can absorb the UV light in natural light and can send out reddish orange fluorescence, and the agricultural plastic film containing the said additive can absorb UV lighg with 200-400 nm, and can convert the absorbed UV light into reddish orange light (600-720 mm). Its fluorescent intensity is high, and its stability is good, and the said additive can be used in photoluminescence material.
Description
The invention belongs to a kind of fluorescence additive, a kind of photothermal converting agent that UV-light is converted to reddish orange fluorescence of more specifically saying so.
UV-light has undesirable action to crop growth, and can cause the aging of plastic agricultural film, and blood orange light can promote photosynthesis to some crop, makes the plant growth shape of growing sturdily, and output improves, and can shorten the ripening stage.Present agricultural polyethylene (PE) or polyvinyl chloride (PVC) film, can not absorb UV-light, can not be converted into the blood orange light favourable to plant growth, afterwards, people have developed the ageing-resistant film that adds UV light absorber etc., though this film can absorb UV-light, can not be converted into visible light, make light transmission rate reduce, do not make full use of sunlight.CN1105040A discloses a kind of three part type photothermal converting agents, and its chemical general formula is (M
1-xEu
x)
2A
3L
2, M is the arbitrary proportion combination of Y, La or Gd and two or three compositions in them in the formula, 0＜X＜1, and A is the binary aliphatic carboxylic acid, L is a n-heterocyclic ligand.There is the too high problem of synthesis technique poor performance and cost in this photothermal converting agent.
The object of the present invention is to provide a kind of three part type fluorescence additives, its brightness height, fluorescence lifetime length and cost are lower, and the plastic sheeting for farm use with this photothermal converting agent is produced can absorb the UV-light in the natural light, and be converted into blood orange light.
The general formula of fluorescence additive of the present invention is:
(M
xM
yEu
1-x-y)
2A
3B
2M in the formula
X, M
YBe respectively La, Gd, x, y are the ratios of La, Gd, and 0≤x＜1,0≤y＜1,0≤x+y＜1, and A is a beta-diketon class material, and as methyl ethyl diketone, benzoyl acetone, tribromo-acetyl acetone etc., B is a vulkacit D.
Fluorescence additive of the present invention prepares by the following method:
With (La
xGd
yEu
1-x-y)
2O
3Be dissolved in HNO
3Or among the HCL solution I, with beta-diketon dissolve solution II, vulkacit D is dissolved in ethanol gets solution III, again II is added after I is added III, stirring reaction under the room temperature is transferred pH value to 4～8, reaction 10～40min, reacting liquid filtering, dry getting final product.
Fluorescence additive of the present invention, can be used alone, also can arbitrary proportion mix mutually or mix use by arbitrary proportion with other photothermal converting agent, except that being used for agricultural light conversion film, also can be used for embedded photoluminescent material, when being used for agricultural light conversion film, its addition is 0.005～2.0wt%, can directly add to add after also can making master batch earlier.
The phototransformation film uv absorption rate in the 200-400nm scope that adds fluorescence additive of the present invention surpasses 90%, sends fluorescent red-orange (580-720nm), and fluorescence intensity is high and stable.Because fluorescence additive of the present invention has utilized the sensibilized between the rare earth element, the choose reasonable part, thereby reduced cost.
Embodiment 1
Get 0.25mol rare earth oxide mixture, Eu in the mixture
2O
3: La
2O
3: Gd
2O
3=0.7: 0.2: 0.1, be dissolved among the 300ml 5MHCL, get solution I; Get the 0.375mol benzoyl acetone and be dissolved in H
2Make the 5M solution II among the O; The 0.5mol vulkacit D is dissolved in ethanol makes the 5M solution III; I is added among the III, II is added again, stirring reaction under the room temperature is transferred pH value to 7 with NaOH, and reaction 30min filters, oven dry.Embodiment 2:Eu
2O
3: La
2O
3: Gd
2O
3=0.5: 0.3: 0.2, other condition was with embodiment 1.Embodiment 3:Eu
2O
3: La
2O
3: Gd
2O
3=1: 0: 0, other condition was with embodiment 1.Embodiment 4:Eu
2O
3: La
2O
3: Gd
2O
3=0.7: 0.3: 0, other condition was with embodiment 1.Embodiment 5:Eu
2O
3: La
2O
3: Gd
2O
3=0.6: 0: 0.4, other condition was with embodiment 1.Embodiment 6:
Get new LDPE (film grade) (LDPE) 100kg, add embodiment 1 fluorescence additive 0.01kg, high-speed stirring is mixed, and presses the canopy film of plastic sheeting for farm use production technique blowing 80～140 μ m on inflation film manufacturing machine.This film absorption of UV reaches 94%, sends the azarin fluorescent orange under the ultraviolet excitation, and the visible region light transmission rate is 92.7% (GB2410-80).Embodiment 7:
The mulch film of blowing 5～10 μ m, other condition is with embodiment 6, and this film absorption of UV reaches 92%, sends the azarin fluorescent orange under the ultraviolet excitation, and the visible region light transmission rate is 98.5%.Embodiment 8:
PE100kg, fluorescence additive 0.1kg, all the other conditions are with embodiment 6, and this film absorption of UV reaches 94.8%, sends the azarin fluorescent orange under the ultraviolet excitation, and the visible region light transmission rate is 92.4%.
Claims (2)
1. a fluorescence additive can absorb UV-light and convert the UV-light that is absorbed to blood orange coloured light, it is characterized in that the chemical general formula of this fluorescence additive is:
(M
xM
yEu
1-x-y)
2A
3B
2
Mx, My are respectively La, Gd in the formula, and x, y are the ratios of La, Gd, and
0≤x＜1,0≤y＜1,0≤x+y＜1, A is a beta-diketon class material, B is the hexichol croak.
2. fluorescence additive according to claim 1 is characterized in that described beta-diketon class material is preferably benzoyl acetone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99104576 CN1098326C (en) | 1999-04-02 | 1999-04-02 | Fluorescent additive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99104576 CN1098326C (en) | 1999-04-02 | 1999-04-02 | Fluorescent additive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1269393A true CN1269393A (en) | 2000-10-11 |
| CN1098326C CN1098326C (en) | 2003-01-08 |
Family
ID=5271734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99104576 Expired - Fee Related CN1098326C (en) | 1999-04-02 | 1999-04-02 | Fluorescent additive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1098326C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009115574A1 (en) | 2008-03-19 | 2009-09-24 | Grow Foil B.V. | Greenhouse for enhanced plant growth |
| CN102161249A (en) * | 2010-12-27 | 2011-08-24 | 淄博市临淄宽力塑料制品厂 | Light-splitting spectrum greenhouse film and preparation method thereof |
| WO2015168439A1 (en) | 2014-04-30 | 2015-11-05 | Nitto Denko Corporation | Inorganic oxide coated fluorescent chromophores for use in highly photostable wavelength conversion films |
| US9960294B2 (en) | 2013-01-04 | 2018-05-01 | Nitto Denko Corporation | Highly fluorescent and photo-stable chromophores for wavelength conversion |
-
1999
- 1999-04-02 CN CN 99104576 patent/CN1098326C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009115574A1 (en) | 2008-03-19 | 2009-09-24 | Grow Foil B.V. | Greenhouse for enhanced plant growth |
| CN102161249A (en) * | 2010-12-27 | 2011-08-24 | 淄博市临淄宽力塑料制品厂 | Light-splitting spectrum greenhouse film and preparation method thereof |
| US9960294B2 (en) | 2013-01-04 | 2018-05-01 | Nitto Denko Corporation | Highly fluorescent and photo-stable chromophores for wavelength conversion |
| US10461201B2 (en) | 2013-01-04 | 2019-10-29 | Nitto Denko Corporation | Highly-fluorescent and photo-stable chromophores for wavelength conversion |
| US10840397B2 (en) | 2013-01-04 | 2020-11-17 | Nitto Denko Corporation | Highly-fluorescent and photo-stable chromophores for wavelength conversion |
| WO2015168439A1 (en) | 2014-04-30 | 2015-11-05 | Nitto Denko Corporation | Inorganic oxide coated fluorescent chromophores for use in highly photostable wavelength conversion films |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1098326C (en) | 2003-01-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030108 Termination date: 20180402 |