CN101074146A - 吸收紫外光的低膨胀系数玻璃 - Google Patents
吸收紫外光的低膨胀系数玻璃 Download PDFInfo
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- CN101074146A CN101074146A CNA2007100493193A CN200710049319A CN101074146A CN 101074146 A CN101074146 A CN 101074146A CN A2007100493193 A CNA2007100493193 A CN A2007100493193A CN 200710049319 A CN200710049319 A CN 200710049319A CN 101074146 A CN101074146 A CN 101074146A
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- 239000011521 glass Substances 0.000 title claims abstract description 43
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Li2O Inorganic materials [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 claims abstract 2
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 7
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 5
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 abstract 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 abstract 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 abstract 1
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000004031 devitrification Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000019612 pigmentation Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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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
- C03C4/00—Compositions for glass with special properties
- C03C4/08—Compositions for glass with special properties for glass selectively absorbing radiation of specified wave lengths
- C03C4/085—Compositions for glass with special properties for glass selectively absorbing radiation of specified wave lengths for ultraviolet absorbing glass
-
- 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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/095—Glass compositions containing silica with 40% to 90% silica, by weight containing rare earths
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Abstract
本发明提供了一种玻璃,其膨胀系数低,且具有良好的吸收紫外光的能力。吸收紫外光的低膨胀系数玻璃,其重量百分比组成为:SiO2:65-70%、B2O3:15-20%、Al2O3:1-5%、Li2O:0-2%、Na2O:0-3%、K2O:3-10%、CeO2:0.2-2%、TiO2:0.2-2%、ZnO:0-2%、ZrO2:0-2%、BaO:0-1%。本发明的玻璃对0-310nm范围波长的紫外光都具有吸收作用,且膨胀系数为50±10×10-7/℃,特别适用于照明行业。
Description
技术领域
本发明涉及一种玻璃,特别是涉及一种具有低膨胀系数(α)且对紫外线具有过滤作用的玻璃。
背景技术
由于在生产中,特别是在照明行业,经常要用玻璃与金属钼进行封接,因此,玻璃的膨胀系数必须与金属钼(20℃-300℃时膨胀系数为46-50×10-7/℃)的膨胀系数相匹配,才能保证玻璃在使用过程中不会炸裂。要使玻璃的膨胀系数达到此范围,该玻璃一般采用SiO2-B2O3-Al2O3-K2O系统,该系统要保证低膨胀系数,则必须使用大量的SiO2、B2O3、Al2O3等原料。光源发出的光中有一部分紫外线光,紫外光对人体有害,并且如果光源在塑料器件中使用,将加快塑料的老化速度,为了防止以上缺陷,该玻璃必须具有良好的吸收紫外光的功能。
发明内容
本发明所要解决的技术问题是提供一种玻璃,其膨胀系数低,且具有良好的吸收紫外光的能力。
本发明解决技术问题所采用的技术方案是:吸收紫外光的低膨胀系数玻璃,其重量百分比组成为:SiO2:65-70%、B2O3:15-20%、Al2O3:1-5%、Li2O:0-2%、Na2O:0-3%、K2O:3-10%、CeO2:0.2-2%、TiO2:0.2-2%、ZnO:0-2%、ZrO2:0-2%、BaO:0-1%。
本发明的有益效果是:本发明的玻璃对0-310nm范围波长的紫外光都具有吸收作用,且膨胀系数为50±10×10-7/℃,特别适用于照明行业。具体实施方式
SiO2和B2O3为玻璃的生成体,SiO2在玻璃中具有熔化温度高、膨胀系数低等特点,当玻璃中SiO2含量>70%(重量百分比含量,以下同)时,玻璃的粘度较大,玻璃熔制容易造成结石和气泡等问题;当SiO2含量<65%时,玻璃的膨胀系数又不能降下来。B2O3在玻璃配方中主要起助熔作用,同时具有较低的膨胀系数,实验证明B2O3含量为15-20%较好。
Li2O、Na2O、K2O和ZnO这四种物质在玻璃中主要起助熔的作用,以降低玻璃的粘度,K2O和ZnO还可以增加玻璃的光泽性,但当玻璃中Li2O、Na2O和K2O含量之和高于13%时,将不能保证玻璃的膨胀系数在50±10×10-7/℃;当Li2O、Na2O和K2O含量之和小于3%时,玻璃的粘度非常大,不利于玻璃的溶化,为了增加玻璃的透光性及光泽性,同时保证玻璃的膨胀系数在50±10×10-7/℃的范围内,玻璃中采用了3-10%的K2O、0-3%的Na2O、0-2%的ZnO、0-2%的Li2O。
CeO2和TiO2在玻璃中主要起吸收紫外光的作用,但这两种物质具有着色作用,含量过高将影响玻璃的透光性,实验证明当CeO2为0.2-2%、TiO2为0.2-2%时,玻璃对320纳米以下的紫外光具有较好的吸收作用。
ZrO2和BaO在玻璃中主要起降低玻璃的高温粘度的作用,同时还具有增强玻璃的化学稳定性的作用。为了保证玻璃的膨胀系数在50±10×10-7/℃的范围内,实验证明ZrO2为0-2%、BaO为0-1%时,效果较好。
Al2O3在一定的温度范围内具有负膨胀的膨胀系数,因此对降低玻璃的膨胀系数具有较好的作用,同时还具有阻止玻璃析晶的作用,但由于Al2O3粘度过大,不利于玻璃的熔化,实验证明Al2O3为1-5%较合适。
本发明的生产方法采用常规方法生产,其步骤包括:称量原料,在池铂连熔炉上以1550-1650℃熔化、澄清,1150-1350℃均化成型,得到产品。
下面是本发明的8个实施例和1个比较例:
实施例 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 比较例 |
SiO2 | 67.2 | 65 | 68 | 69 | 67 | 66 | 69.3 | 70 | 67 |
Al2O3 | 3.25 | 4.4 | 3.3 | 1 | 5 | 4.5 | 4 | 3.25 | 3 |
B2O3 | 18.1 | 20 | 18 | 18 | 17.5 | 18 | 15 | 18.1 | 18 |
Na2O | 0.90 | 0.6 | 1.7 | 1.1 | 1.1 | 0.8 | 3 | 0 | 2 |
K2O | 7.4 | 8 | 7.8 | 7 | 7 | 8 | 3 | 10 | 7 |
Zn0 | 0.65 | 0.4 | 0.5 | 0.4 | 2 | 0.5 | 0.6 | 0 | 3 |
ZrO2 | 0.1 | 0 | 0.1 | 0 | 0 | 2 | 0.1 | 0.1 | 0 |
TiO2 | 0.4 | 0.2 | 0.2 | 2 | 0.2 | 0.2 | 0.3 | 0.4 | 0 |
CeO2 | 0.5 | 0.6 | 0.6 | 0.2 | 0.6 | 0.5 | 0.5 | 2 | 0 |
Li2O | 0.5 | 2 | 0 | 1 | 1 | 0.5 | 1 | 0.5 | 0 |
BaO | 1 | 0.5 | 0 | 0 | 0 | 0.5 | 1 | 1 | 0 |
α×107(20-300℃) | 51 | 50 | 49 | 48 | 51 | 52 | 48 | 47 | 47 |
吸收紫外波长λ(nm)的范围 | 0-319 | 0-310 | 0-310 | 0-312 | 0-315 | 0-320 | 0-317 | 0-319 | 0-255 |
从上表可以看出:比较例对0-255nm范围波长的紫外光有吸收作用,而对255-310nm范围波长的紫外光不具有吸收作用,而本发明对0-310nm范围波长的紫外光都有吸收作用,既有良好的吸收紫外光的能力,且膨胀系数为50±10×10-7/℃。
Claims (2)
1、吸收紫外光的低膨胀系数玻璃,其特征在于,其重量百分比组成为:SiO2:65-70%、B2O3:15-20%、Al2O3:1-5%、Li2O:0-2%、Na2O:0-3%、K2O:3-10%、CeO2:0.2-2%、TiO2:0.2-2%、ZnO:0-2%、ZrO2:0-2%、BaO:0-1%。
2、吸收紫外光的低膨胀系数玻璃,其特征在于,所述Li2O、Na2O和K2O的重量百分比含量之和为3-13%。
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010138784A3 (en) * | 2009-05-29 | 2011-01-20 | Corning Incorporated | Fusion formable sodium free glass |
US8975199B2 (en) | 2011-08-12 | 2015-03-10 | Corsam Technologies Llc | Fusion formable alkali-free intermediate thermal expansion coefficient glass |
US9512030B2 (en) | 2012-02-29 | 2016-12-06 | Corning Incorporated | High CTE potassium borosilicate core glasses and glass articles comprising the same |
US10501365B2 (en) | 2014-09-25 | 2019-12-10 | Corning Incorporated | UV blocking for improved transmission glasses |
CN112939455A (zh) * | 2021-03-23 | 2021-06-11 | 成都光明光电股份有限公司 | 光学玻璃、光学元件和光学仪器 |
CN113045199A (zh) * | 2021-03-23 | 2021-06-29 | 成都光明光电股份有限公司 | 透紫外玻璃 |
-
2007
- 2007-06-16 CN CN2007100493193A patent/CN101074146B/zh active Active
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010138784A3 (en) * | 2009-05-29 | 2011-01-20 | Corning Incorporated | Fusion formable sodium free glass |
US9371247B2 (en) | 2009-05-29 | 2016-06-21 | Corsam Technologies Llc | Fusion formable sodium free glass |
US10173919B2 (en) | 2009-05-29 | 2019-01-08 | Corsam Technologies Llc | Fusion formable sodium free glass |
US8975199B2 (en) | 2011-08-12 | 2015-03-10 | Corsam Technologies Llc | Fusion formable alkali-free intermediate thermal expansion coefficient glass |
US9643883B2 (en) | 2011-08-12 | 2017-05-09 | Corsam Technologies Llc | Fusion formable alkali-free intermediate thermal expansion coefficient glass |
US9512030B2 (en) | 2012-02-29 | 2016-12-06 | Corning Incorporated | High CTE potassium borosilicate core glasses and glass articles comprising the same |
US10501365B2 (en) | 2014-09-25 | 2019-12-10 | Corning Incorporated | UV blocking for improved transmission glasses |
US11498865B2 (en) | 2014-09-25 | 2022-11-15 | Corning Incorporated | UV blocking for improved transmission glasses |
CN112939455A (zh) * | 2021-03-23 | 2021-06-11 | 成都光明光电股份有限公司 | 光学玻璃、光学元件和光学仪器 |
CN113045199A (zh) * | 2021-03-23 | 2021-06-29 | 成都光明光电股份有限公司 | 透紫外玻璃 |
CN113045199B (zh) * | 2021-03-23 | 2022-04-15 | 成都光明光电股份有限公司 | 透紫外玻璃 |
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