KR950004482B1 - Glass solders - Google Patents
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- KR950004482B1 KR950004482B1 KR1019900019935A KR900019935A KR950004482B1 KR 950004482 B1 KR950004482 B1 KR 950004482B1 KR 1019900019935 A KR1019900019935 A KR 1019900019935A KR 900019935 A KR900019935 A KR 900019935A KR 950004482 B1 KR950004482 B1 KR 950004482B1
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- 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
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/24—Fusion seal compositions being frit compositions having non-frit additions, i.e. for use as seals between dissimilar materials, e.g. glass and metal; Glass solders
- C03C8/245—Fusion seal compositions being frit compositions having non-frit additions, i.e. for use as seals between dissimilar materials, e.g. glass and metal; Glass solders containing more than 50% lead oxide, by weight
-
- 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
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/24—Fusion seal compositions being frit compositions having non-frit additions, i.e. for use as seals between dissimilar materials, e.g. glass and metal; Glass solders
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Abstract
Description
본 발명은 접착용 유리조성물에 관한 것으로서, 더욱 상세하게는 형광표시관과 그 주변을 둘러싸고 있는 유리재질을 접착하는데 사용되는 접착용 유리조성물에 관한 것이다.The present invention relates to an adhesive glass composition, and more particularly, to an adhesive glass composition used for bonding a fluorescent display tube and a glass material surrounding the periphery thereof.
일반적으로 형광표시관에는 유리로된 절연성 기판상에 배선도체, 양극도체, 형광체등을 적층 배치해서 형성된 양극과, 그 양극과 음극 사이에 위치한 제어전극, 그리고 필라멘트상의 음극 등의 전극이 배치되어 있다.In general, a fluorescent display tube includes an anode formed by stacking wiring conductors, anode conductors, and phosphors on an insulating substrate made of glass, a control electrode disposed between the anode and the cathode, and a cathode such as a filament cathode. .
또한, 이러한 전극 주위에는 전기절연성 전면용기가 주변의 전기절연성 기판과 접착된 상태로 배치되어 있고, 접착된 그 사이에 내부의 전극에서 연장된 리드단자가 배치되어 있다.In addition, around the electrode, an electrically insulating front container is disposed in a state of being bonded to the surrounding electrically insulating substrate, and a lead terminal extending from an internal electrode is disposed therebetween.
이와 같은 전면용기와 금속 426합금으로 이루어진 리드단자, 그리고 전기절연성 기판을 기밀하게 접착시키기 위해서 접착제가 사용된다.Adhesives are used to hermetically bond such front containers, lead terminals made of metal 426 alloy, and electrically insulating substrates.
또한, 접착처리 시점에서 형광표시관의 기판에는 배선도체와 양극도체가 배설되어 있기 때문에 접착온도가 460℃이상이 되면 형광체 도포물질이 증발하거나 화학변화를 일으켜서 형광체가 변질되고 휘도가 저하되며 발광효율이 낮아지는 문제점이 있으며, 특히 배선도체가 알루미늄인 경우에는 알루미늄이 산화하거나 용해되어 절단되는 현상이 발생해서 도통(導通) 불량을 일으키는 문제점이 있다.In addition, since the wiring conductor and the anode conductor are disposed on the substrate of the fluorescent display tube at the time of the adhesion process, when the adhesion temperature is higher than 460 ° C, the phosphor coating material evaporates or a chemical change causes the phosphor to deteriorate and the luminance decreases. This problem is lowered. In particular, in the case where the wiring conductor is aluminum, there is a problem in that aluminum is oxidized or dissolved and cut, causing poor conduction.
따라서, 이러한 문제점을 해결하기 위해서는 온도가 낮은 상태에서 접착처리하는 것이 좋은데, 그렇다고 해서 낮은 온도에서도 연화되는 접착제를 사용하면 접착 후 배기공정에서 형광표시관의 내부가 진공으로 되기 때문에 접착부가 흘러내려 완벽한 접착부를 형성하지 못한다.Therefore, in order to solve this problem, it is better to perform the adhesive treatment at a low temperature. However, if the adhesive is softened even at a low temperature, the inside of the fluorescent display tube becomes a vacuum in the exhaust process after the adhesion, so that the adhesive portion flows out. Failure to form adhesives
이와 같은 여러 조건을 고려해보면, 바람직한 접착제는 연화점이 390℃ 이상이어야 하고 접착온도는 450℃ 이하이어야 하며, 또한 완벽한 접착을 위해서 절연기판 및 전면용기를 형성하는 연질유리판과 접착용 유리 조성물의 열팽창계수가 일치해야 한다.Considering these various conditions, the preferred adhesive should have a softening point of 390 ° C or higher, a bonding temperature of 450 ° C or lower, and a thermal expansion coefficient of the soft glass plate and the glass composition for bonding to form an insulating substrate and a front container for perfect adhesion. Must match.
종래에는 이러한 형광표시관의 접착에 사용하는 접착제로서 PbO-B2O3-SiO2계 비정질유리분말에 지르콘, PbTiO3등의 내화물 휠러가 혼합되어 사용되어 왔는 바, 이러한 접착제는 연화점이 350℃ 부근으로 너무 낮기 때문에 접착 후 배기공정에서 형광표시관의 내부가 진공상태로 되면 접착부가 흘러 내려 완벽한 접착부를 형성하지 못하는 문제점이 있었다.Conventionally, refractory wheelers such as zircon and PbTiO 3 have been mixed with PbO-B 2 O 3 -SiO 2 -based amorphous glass powder as an adhesive for bonding such fluorescent display tubes. Since it is too low in the vicinity, when the interior of the fluorescent display tube in a vacuum state after the adhesion step, there is a problem that the adhesive part flows down to form a perfect adhesive part.
따라서, 본 발명은 연화점이 390∼420℃치고 접착온도가 450℃ 이하이며 또한 열팽창계수가 연질유리판과 거의 일치하여 접착성이 현저하게 개선된 새로운 형광표시관 접착용 유리조성물을 제공하는데에 그 목적이 있다.Accordingly, an object of the present invention is to provide a novel glass composition for bonding a fluorescent display tube, which has a softening point of 390 to 420 ° C., an adhesion temperature of 450 ° C. or less, and a thermal expansion coefficient almost identical to that of a soft glass plate, thereby improving the adhesion. There is this.
이하, 본 발명을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail.
본 발명은 저융점 유리분말과 내화물 휠러로 이루어진 형광표시관 접착용 유리조성물에 있어서, PbO 75∼87중량%, B2O38∼15중량%, SiO21∼7중량%, Al2O30.5~3중량%의 조성을 가지는 저융점 유리분말 60∼90중량%와 내화물 휠러 10~40중량%로 구성된 것을 특징으로 한다.The present invention relates to a glass composition for bonding a fluorescent display tube composed of a low melting point glass powder and a refractory wheeler, comprising: 75 to 87% by weight of PbO, 8 to 15% by weight of B 2 O 3 , 1 to 7% by weight of SiO 2 , and Al 2 O. 3 It is characterized by consisting of 60 to 90% by weight of the low melting glass powder having a composition of 0.5 to 3% by weight and 10 to 40% by weight of the refractory wheeler.
이하, 본 발명은 더욱 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in more detail as follows.
본 발명에서 저융점 유리분말중 PbO는 75∼87중량%로 첨가되는데, 이 때 PbO의 함량이 75중량% 미만이면 유리의 연화점이 높고 점도가 크게 되어 저온에서의 접착이 어려우며 87중량%를 초과하면 유리자체의 열팽창계수가 커져서 곤란하다.In the present invention, PbO is added at 75 to 87% by weight in the low melting point glass powder. At this time, if the PbO content is less than 75% by weight, the softening point of the glass is high and the viscosity is high, making it difficult to bond at low temperatures and exceeding 87% by weight. This is difficult because the coefficient of thermal expansion of the glass itself becomes large.
또한, 저융점 유리분말중 B2O3는 8~15중량%로 첨가되는데, 이 때 B2O3의 함량이 8중량% 미만이면 유리화가 곤란하게 되고 15중량%를 초과하면 유리상이 불안정하게 된다.In addition, B 2 O 3 in the low melting glass powder is added in an amount of 8 to 15% by weight, when the content of B 2 O 3 is less than 8% by weight it becomes difficult to vitrify, if the content exceeds 15% by weight the glass phase is unstable do.
그리고, 저융점 유리분말중 SiO2와 Al2O3는 유리의 화학적 내구성을 향상시키고 열팽창계수를 낮추기 위해서 각각 1∼7중량%와 0.5~3중량%로 첨가되는데, 이들 성분이 상기의 범위보다 적은 양으로 첨가되면 효과가 적고 과량 첨가되면 유리의 연화점이 높아져서 곤란하다.In the low melting glass powder, SiO 2 and Al 2 O 3 are added at 1 to 7% by weight and 0.5 to 3% by weight, respectively, in order to improve the chemical durability of the glass and lower the coefficient of thermal expansion. When added in a small amount, the effect is small, and when added in an excessive amount, the softening point of the glass becomes high, making it difficult.
한편, 본 발명에서 내하물 휠러는 ZnO, B2O3, SiO2, MgO로 구성된 열팽창계수가 35이하인 결정화 유리분말과 지르콘의 혼합물로써 결정화 유리분말중 ZnO는 55∼65중량%로 포함되는데, 함량이 55중량% 미만이면 균질한 결정물을 얻을 수 없어 휠러의 강도가 저하되는 문제점이 있고, 65중량%를 초과하면 단일상의 유리용융에 어렵다는 문제점이 있다.Meanwhile, in the present invention, the load-bearing wheeler is a mixture of crystalline glass powder and zircon having a thermal expansion coefficient of 35 or less composed of ZnO, B 2 O 3 , SiO 2 , and MgO, and ZnO is included in the crystallized glass powder at 55 to 65% by weight. If the content is less than 55% by weight, it is not possible to obtain homogeneous crystals, so that the strength of the wheeler is lowered. If the content is more than 65% by weight, it is difficult to melt the glass in a single phase.
B2O3의 함량을 19∼30중량%, SiO2의 함량을 7∼15중량%로 한정하는 이유는 이들 함량범위를 넘어서게 되면 단일상의 균질화 유리용융이 어려운 불포화 영역에 들어서게 되므로 본 발명에서 요하는 휠러로서의 역할에 문제가 생기게 되므로 바람직하지 못하다.The reason for limiting the content of B 2 O 3 to 19 to 30% by weight, and the content of SiO 2 to 7 to 15% by weight is because the content of the single phase homogeneous glass melting is difficult to enter into the unsaturated region because it is required in the present invention. This is undesirable because it causes problems in the role of the wheeler.
그리고, 결정화 유리분말중 MgO는 2∼5중량%로 포함되어 결정의 속도를 계어하게 되는데, 그 함량이 2중량% 미만이면 결정화 속도에 미치는 효과가 거의 없고, 5중량%를 초과하면 결정화가 너무 빨라져서 작업성이 떨어지는 등의 문제점이 있다.In the crystallized glass powder, MgO is contained in an amount of 2 to 5% by weight to determine the rate of crystallization. If the content is less than 2% by weight, the effect of crystallization rate is almost negligible. There is a problem such as faster workability is reduced.
또한, 본 발명에서 지르콘과 결정화 유리분말은 3 : 1의 중량비로 혼합하는데, 이때 결정화 유리분말이 지르콘 3에 대해 1을 초과하여 혼합하여 이것을 저융점 유리분말과 혼합하여 사용하면 유동성이 낮아져 저온에서 접착이 어렵게 되고, 또한 결정화 유리분말이 1이하로 되면 유동성이 커져 배기공정에서 접착부가 흘러내리는 현상이 나타난다.In addition, in the present invention, the zircon and the crystallized glass powder are mixed in a weight ratio of 3: 1, wherein the crystallized glass powder is mixed in excess of 1 with respect to the zircon 3, and when mixed with the low melting glass powder, the fluidity is lowered at low temperature. If the adhesion becomes difficult, and the crystallized glass powder is less than or equal to 1, the fluidity becomes large and the adhesive portion flows down in the exhaust process.
이러한 내화물 휠러는 전체 유리조성물에 대해 10∼40중량%로 함유되는데, 10중량% 미만이면 열팽창계수가 높게 되어 접착부에 크랙이 발생하기 쉽고 40중량%을 초과하면 유동성이 저하되는 문제점이 생긴다.The refractory wheeler is contained in 10 to 40% by weight based on the total glass composition, if less than 10% by weight the thermal expansion coefficient is high, the cracks easily occur in the adhesive portion, if more than 40% by weight there is a problem that the fluidity is lowered.
이와 같은 본 발명에 의해 제조된 접착용 유리조성물은 연화점이 높고 접착온도가 낮기 때문에 형광표시관에 사용할 경우 접착성이 현저하게 우수하여 접착제 유리조성물로서 매우 유용한 것이다.The adhesive glass composition prepared according to the present invention has a high softening point and a low adhesive temperature, and thus is very useful as an adhesive glass composition when used in a fluorescent display tube.
이하, 본 발명을 실시예에 의거 더욱 상세히 설명하겠는 바, 실시예에 의해 본 발명이 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited by Examples.
실시예 1∼6Examples 1-6
저융점 유리조성물인 PbO, B2O3, SiO2, Al2O3를 다음 표 1의 비율로 혼합하여 각각을 백금 도가니에서 1000℃, 30분간 용융하고 이 용융점을 판상으로 성형한 다음 볼밀을 사용하여 분쇄하고 150메쉬로 체가름한 것을 저융점 유리분말로 하였다.PbO, B 2 O 3 , SiO 2 , and Al 2 O 3, which are low melting point glass compositions, were mixed in the ratio of the following Table 1, and each was melted in a platinum crucible for 30 minutes at 1000 ° C., and the melting point was formed into a plate. It was pulverized and sieved to 150 mesh to obtain a low melting glass powder.
다른 한편으로는 휠러로 사용되는 저팽창성 결정화 유리를 다음과 같은 방법으로 제조하였다. 저팽창성 결정화 유리의 조성은 중량%로 ZnO 59%, B2O324%, SiO212%, MgO 5%로 하여, 이것을 백금도가니에서 1500℃에서 30분간 용융한 다음 판상으로 성형해서 볼밀을 사용하여 분쇄하고 150메쉬로 체가름한 다음, 이것을 다시 일정한 크기로 성형해서 900℃에서 30분간 결정화시킨 다음 분쇄하고 150메쉬로 체가름한 것을 저팽창성 결정화 유리분말로 하였다.On the other hand, low-expansion crystallized glass used as a wheeler was manufactured by the following method. The composition of the low-expansion crystallized glass was 59% by weight ZnO, 24% B 2 O 3 , 12% SiO 2 , and 5% MgO, which was melted in a platinum crucible for 30 minutes at 1500 ° C., and then formed into a plate to form a ball mill. It was pulverized and sieved to 150 mesh, which was again formed into a constant size and crystallized at 900 DEG C for 30 minutes, and then pulverized and sieved to 150 mesh to form a low-expansion crystallized glass powder.
이렇게 하여 제조된 결정화 유리분말을 중량비로 1에 대하여 지르콘 3을 혼합하여 이것을 내화물 휠러로 사용하였다.The crystallized glass powder thus prepared was mixed with zircon 3 with respect to 1 in weight ratio and used as a refractory wheeler.
상기에서 제조한 저융점 유러분말과 내화물 휠러를 일정 비율로 혼합하여 형광표시관 접착용 유리조성물을 얻었다. 얻어진 조성물의 특성을 각각 다음의 표 1에 나타내었다.The low melting point euro powder prepared above and the refractory wheeler were mixed at a predetermined ratio to obtain a glass composition for bonding a fluorescent display tube. The properties of the obtained composition are shown in Table 1 below, respectively.
비교예Comparative example
실시예 1과 동일한 방법으로 실시하되 조성물의 종류와 함량, 특성치를 다음 표 1에 나타내었다.Performed in the same manner as in Example 1, but the type, content, and characteristic values of the composition are shown in Table 1 below.
[표 1]TABLE 1
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019900019935A KR950004482B1 (en) | 1990-12-05 | 1990-12-05 | Glass solders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019900019935A KR950004482B1 (en) | 1990-12-05 | 1990-12-05 | Glass solders |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR920011937A KR920011937A (en) | 1992-07-25 |
| KR950004482B1 true KR950004482B1 (en) | 1995-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019900019935A KR950004482B1 (en) | 1990-12-05 | 1990-12-05 | Glass solders |
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| Country | Link |
|---|---|
| KR (1) | KR950004482B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11283537A (en) * | 1998-03-27 | 1999-10-15 | Futaba Corp | Fluorescent display tube |
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1990
- 1990-12-05 KR KR1019900019935A patent/KR950004482B1/en not_active IP Right Cessation
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| Publication number | Publication date |
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| KR920011937A (en) | 1992-07-25 |
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