KR950011221B1 - Preparation method of fluorescent material - Google Patents
Preparation method of fluorescent material Download PDFInfo
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- KR950011221B1 KR950011221B1 KR1019870008706A KR870008706A KR950011221B1 KR 950011221 B1 KR950011221 B1 KR 950011221B1 KR 1019870008706 A KR1019870008706 A KR 1019870008706A KR 870008706 A KR870008706 A KR 870008706A KR 950011221 B1 KR950011221 B1 KR 950011221B1
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- South Korea
- Prior art keywords
- transparent conductive
- fluorescent substance
- fluorescent
- fine particles
- tin
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- 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
- C09K11/62—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing gallium, indium or thallium
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Luminescent Compositions (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Abstract
Description
본 발명은 투명도전성 미립자 부착 형광등용 형광체의 제조방법에 관한 것이다. 본 발명은 형광등용 형광체의 표면처리를 통하여 형광등 점등시간의 특성을 개선하는데 관련된 것이다.The present invention relates to a method for producing a phosphor for fluorescent lamps with transparent conductive fine particles. The present invention relates to improving the characteristics of the fluorescent lamp lighting time through the surface treatment of the fluorescent material for fluorescent lamps.
지금까지 형광등의 점등시간은 발광관의 저항값에 관계하여 통상의 경우 3 내지 5초의 시간이 소모되어 점등회로 변경과 함께 발광관의 저항값을 조절하여 점등시간을 줄이려고 시도하여 왔다. 이때 발광관의 저항값을 조절하기 위한 종래의 방법에 여러가지 문제가 있어 왔다.Up to now, the lighting time of the fluorescent lamp is generally consumed for 3 to 5 seconds in relation to the resistance value of the light emitting tube, and has been attempted to reduce the lighting time by adjusting the resistance value of the light emitting tube with the change of the lighting circuit. At this time, there have been various problems in the conventional method for adjusting the resistance value of the light tube.
종래에 형광등 발광관의 저항값을 조절하는 방법으로는 다음의 것이 통상적으로 사용된다. 하나는 발광관 외주면에 실리콘 오일을 도포하여 사용한다. 또 다른 하나는 발광관 내주면에 산화인듐, 산화주석, 산화주석-카드뮴의 투명도전성 피막을 형성하여 사용한다.Conventionally, the following are commonly used as a method for adjusting the resistance value of a fluorescent lamp emitting tube. One is to apply a silicone oil on the outer peripheral surface of the light emitting tube. The other uses a transparent conductive film of indium oxide, tin oxide and tin oxide-cadmium on the inner circumferential surface of the light emitting tube.
이와 같은 종래의 방법에 있어서 전자의 경우는 외부 온도와 습도에 의해 저항값이 변하여 점등시간이 불안정하고 장기간 사용시 실리콘 오일의 휘발에 의해 저항값이 변하여 점등시간이 길어진다.In the former method, in the case of the former, the resistance value is changed by external temperature and humidity, and the lighting time is unstable, and the resistance value is changed by volatilization of the silicone oil when it is used for a long time, so that the lighting time is long.
후자의 경우에는 점등시간 특성은 우수하나 투명도전막을 형성하기 위해서는 별도의 장치와 공정이 필요하게 되어 생산원가가 많이 들게 된다.In the latter case, the lighting time characteristics are excellent, but in order to form a transparent conductive film, a separate apparatus and a process are required, resulting in high production costs.
본 발명은 이와 같은 문제점을 해결하고 형광등 점등시간 특성을 개선하기 위한 것이다. 본 발명은 형광체 표면에 투명도전성 미립자를 부착시키는 표면처리를 행함으로써 이루어진다. 사용가능한 투명도전성 미립자 물질은 산화 인듐계, 산화 주석계, 산화 인듐-카드뮴계가 있으나 비저항값, 반사율, 투과율등의 특성을 측정한 결과 가시광선 영역에서의 투과율이 우수하고 화학적으로 안정한 산화 인듐계가 가장 우수하다. 또한 본 발명에서는 비저항 특성을 더욱 향상시키고 투과율을 향상시키기 위하여 임듐의 일부를 주석으로 치환할 수도 있다.The present invention is to solve this problem and improve the fluorescent lamp lighting time characteristics. The present invention is accomplished by performing a surface treatment for attaching transparent conductive fine particles to the surface of a phosphor. The transparent conductive particulate materials that can be used include indium oxide, tin oxide, and indium cadmium, but the characteristics of resistivity, reflectance, and transmittance are measured. great. In addition, in the present invention, part of the indium may be substituted with tin in order to further improve the resistivity property and improve the transmittance.
그 치환 범위는 2 내지 6중량%가 적당하다. 2중량% 이하 및 6중량%이상에서는 저항값이 높아지고 투과율이 저하된다.2-6 weight% is suitable for the substitution range. At 2 weight% or less and 6 weight% or more, a resistance value becomes high and a transmittance | permeability falls.
또한 형광체 표면에 부착시키는 산화인듐, 주석의 양은 형광체의 입도, 비표면적에 의해 차이가 있으나 4% 내지 10%의 중량비가 적당하다. 4%이하에서는 저항값이 증가하여 점등시간이 길어지고 10% 이상에서는 광속의 저하가 현저하여 실용상 사용하기가 곤란하다.In addition, the amount of indium oxide and tin attached to the surface of the phosphor is different depending on the particle size and specific surface area of the phosphor, but a weight ratio of 4% to 10% is appropriate. At 4% or less, the resistance value increases, the lighting time is long, and at 10% or more, the luminous flux is remarkable, making it difficult to use practically.
이때 사용되는 산화인듐, 주석의 입경은 작을수록 특성이 향상되나 초미립자의 경우 입자간 응집에너지가 높아 분산이 어렵고, 입경이 클 경우 광속이 저하하므로 0.001 내지 0.5㎛의 것이 양호하다.In this case, the smaller the particle diameter of the indium oxide and tin used, the better the characteristics. However, in the case of ultrafine particles, the cohesive energy between particles is high, so that it is difficult to disperse.
이하의 실시예를 통하여 본 발명의 방법을 예시, 설명한다.The method of the present invention is illustrated and described through the following examples.
[실시예]EXAMPLE
우선 색 온도 5000˚K로 조절된 평균입경 8.5㎛의 칼슘 할로 포스페이트-희토류계 형광체 1000그램을 순수 3리터에 충분히 분산시킨다.(제 1 용액)First, 1000 grams of calcium halo phosphate-rare earth phosphors having an average particle diameter of 8.5 mu m adjusted to a color temperature of 5000 DEG K were sufficiently dispersed in 3 liters of pure water (first solution).
다른 한편 0.03μ 입경의 3% 주석치환 산화인듐 60그램과 아라비아 고무 4그램을 유리볼과 함께 5시간 이상 밀링하여 완전히 순수에 분산시킨다. 이때 분산제인 롬 앤드 하스사 제품의 트리톤 시에프 10(Triton CF-10)을 첨가하면 분산성은 더욱 향상된다.(제 2 용액)On the other hand, 60 grams of 3% tin-substituted indium oxide with a 0.03μ particle diameter and 4 grams of gum arabic are milled together with a glass ball for at least 5 hours and completely dispersed in pure water. Dispersibility is further improved by adding Triton CF-10, a product of Rohm and Haas, a dispersant.
또 다른 한편 젤라틴 3그램을 97cc의 순수에 용해한다.(제 3 용액)On the other hand, 3 grams of gelatin is dissolved in 97 cc of pure water (third solution).
이상의 제1, 제2, 제 3 용액을 혼합한 뒤 1시간 동안 교반한다. 5%초산으로 pH를 3.7 내지 4.0으로 조절한 뒤 10분간 교반후 교반을 중단한다. 형광체가 침전하면 상등수를 방류하고 탈수·건조한다.After mixing the first, second, and third solution above, the mixture is stirred for 1 hour. After adjusting the pH to 3.7 to 4.0 with 5% acetic acid, the stirring was stopped after stirring for 10 minutes. When the phosphor precipitates, the supernatant is discharged and dehydrated and dried.
이상과 같이 하여 제조된 형광체를 사용하면 별도의 발광관내에 투명도전막을 형성시키는 장치나 공정을 생략하고 래피드-스타트(rapid atart)형 형광등 제조가 가능하다.By using the phosphor prepared as described above, it is possible to manufacture a rapid atart fluorescent lamp by omitting an apparatus or a process for forming a transparent conductive film in a separate light emitting tube.
또한 표면처리를 실시하지 않은 형광체에 비해 단자의선(특히 185nm자외선)에 대한 열화특성이 향상되어 1000시간 점등특성이 2%이상 향상된다.In addition, the deterioration characteristics of the terminal lines (particularly 185 nm ultraviolet rays) are improved compared to the phosphors not subjected to the surface treatment, so that the lighting characteristics are improved by 2% or more for 1000 hours.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019870008706A KR950011221B1 (en) | 1987-08-08 | 1987-08-08 | Preparation method of fluorescent material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019870008706A KR950011221B1 (en) | 1987-08-08 | 1987-08-08 | Preparation method of fluorescent material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR890003921A KR890003921A (en) | 1989-04-18 |
| KR950011221B1 true KR950011221B1 (en) | 1995-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019870008706A KR950011221B1 (en) | 1987-08-08 | 1987-08-08 | Preparation method of fluorescent material |
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| Country | Link |
|---|---|
| KR (1) | KR950011221B1 (en) |
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1987
- 1987-08-08 KR KR1019870008706A patent/KR950011221B1/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| KR890003921A (en) | 1989-04-18 |
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