Chemical properties
Quartz glass is acidic materials, except hydrofluoric acid and hot phosphoric acid, on any other acids were shown to be inert, is the best anti acid materials. At room temperature, alkali and salt on quartz glass corrosion degree isminimal, so do not rule out in these reagents are used in the quartz glass.
Transparent quartz glass than opaque quartz glass has better chemical stability, this is because the latter becausethe bubbles exposed to corrosive liquid superficial area has increased by.
A variety of solution weight loss of quartz glass | |||||
Solution name |
Density (比重) |
(℃) |
Etching time( 小時(shí)) |
Loss of weight (g/㎡) |
|
Transparent quartz glass | Opaque quartz glass | ||||
Hydrochloric acid | 1.19 | 60 | 24 | 0.031 | 0.16 |
Nitric acid | 1.40 | 115 | 24 | 0.11 | 0.15 |
Sulfuric acid | 1.84 | 205 | 24 | 0.06 | 0.13 |
Hydrofluoric acid | 38% |
室溫 (22℃) |
2 | 259.39 | 379.80 |
Phosphoric acid | -- | 200 | 15 | 微量 | -- |
-- | 300 | 15 | 58.00 | -- | |
Sodium hydroxide | 1% | 101 | 2 | 0.80 | 5.15 |
Sodium hydroxide | 1% | 98< | 2 | 0.68 | 4.63 |
Ammonium hydroxide | 25% | 65 | 2 | 0.09 | 0.33 |
Sodium chloride | 10% | 102 | 2 | 0.14 | 0.34 |
Sodium carbonate | 10% | 102 | 2 | 1.20 | 4.99 |
Electrical properties
Quartz glass with high dielectric strength and very low electrical conductivity, is in high temperature, high pressureand high frequency, can still maintain high dielectric strength and resistance, in the band hardly dielectric loss, thereforethe quartz glass is an excellent high temperature dielectric insulating material.
Quartz glass electric energy | ||||
Property name | Electrical performance index | Species | Transparent quartz glass | Opaque quartz glass |
Breakdown voltage (1000 volts / mm ) | 溫室 >30 | 溫室 >16 | ||
500℃ 11 | 7.6 | |||
Dielectric constant (10^6) | ε=3.7 | ε=3.5 | ||
Dielectric loss TG (50cycles / second ) | 0.0003 | 0.001 | ||
Resistance ( ohm cm ) | 20℃ 10^-18 | 10^-16 |
Optical properties of
Quartz glass optical performance has its one's own knack in, it can be through the Far Ultraviolet Spectroscopic, is all ultraviolet permeable material the best, but also through the visible and near infrared spectroscopy. According to the requirements of users, from 185-3500mμband within arbitrary selection of the desired species. As the quartz glasshigh temperature, thermal expansion coefficient is extremely small, chemical thermal stability is good, bubble, stripes,uniformity, birefringence can be comparable with general optical glass, so it is in the work under various bad situationsis of high stability optical system the essential optical materials.
Optical quartz glass refractive index |
||
Wave length ( nm ) |
Crystal melting Quartz glass |
Synthesis Quartz glass |
185.41 193.53 202.54 206.20 213.85 214.45 226.50 232.94 237.83 248.20 250.20 257.62 265.36 274.87 280.35 289.36 298.06 307.59 313.17 328.36 334.15 340.36 346.69 361.17 365.48 398.84 404.65 435.83 486.13 546.07 587.56 656.27 |
1.57464 1.56071 1.54729 1.54269 -- 1.53385 1.52318 1.51834 -- -- 1.50762 1.50397 -- 1.49634 -- -- 1.48859 -- -- 1.48183 -- 1.47877 1.47766 1.47513 -- 1.47028 -- 1.46679 1.46324 1.46021 1.45857 1.45646 |
-- -- 1.54717 1.54266 1.53434 -- 1.52299 -- 1.51473 1.50841 -- 1.50351 1.49994 -- 1.49403 1.49098 1.48837 1.48575 1.48433 -- 1.47976 1.47860 1.47748 1.47503 1.47448 -- 1.46961 1.46669 1.46314 1.46007 1.45847 1.45637 |
Note: measurement error:±3×10^-5 |
Quartz glass structure, impurity content, OH gene and NO, CO content is the main factor affecting the spectral transmittance, atoms of oxygen combined with malnutrition in0.24 μoffice has absorption peak, containing OH groupsof quartz glass, in2.7 μoffice due to molecular vibrations will produce obvious absorption peak, UV transmittancemainly due to metal impurities caused by atomic absorption spectrometry.
Optical quartz glass refractive index |
|||
Wavelength ( microns ) |
Index of refraction |
Wavelength ( microns ) |
Index of refraction |
0.67 0.68 0.69 0.70 0.80 0.90 1.00 1.10 1.20 2.20 2.30 2.40 2.50 2.60 2.70 2.80 |
1.456066 1.455818 1.455579 1.455347 1.453371 1.451808 1.450473 1.440261 1.448110 1.435111 1.433462 1.431730 1.429911 1.428001 1.425995 1.423891 |
1.30 1.40 1.50 1.60 1.70 1.80 1.90 2.00 2.10 2.90 3.00 3.10 3.20 3.30 3.40 3.50 |
1.446980 1.445845 1.444687 1.443492 1.442250 1.440954 1.439957 1.438174 1.436680 1.421684 1.41937 1.41694 1.41440 1.41173 1.40893 1.40601 |
The spectral characteristic curves of quartz glass
Fused quartz glass is well infrared transparent materials, but due to the existence of impurities, UV transmittance.Oxyhydrogen melting crystal obtained quartz glass, due to oxygen defects of structure, in0.24 μa peak, while containing OH groups, so the infrared transmission is extremely low. Synthetic raw material gas refining high purity quartz glass is the best ultraviolet permeable material, but in 2.7μwith severe OH absorption peak. Only with the synthetic raw materials through the fused with or without hydrogen flame melting into optical quartz glass, can very well through thefar ultraviolet to near infrared continuous spectrum.
Quartz glass optical constants |
||
Project / index / variety |
Crystal melting Quartz glass |
Synthesis Quartz glass |
Nd(He587.56mμ) Nf(H486.13mμ) Nc(H656.27mμ) |
1.45857 1.46324 1.45646 |
1.4587 1.46314 1.45637 |
Coefficient of dispersion V=(Nd-1)/(Nf-Nc) Central dispersion: Nf-Nc |
67.6 0.00678 |
67.7 0.00677 |
| 国产三级精品视频 | 一级a做一级a做片性视频爱小说 | 成人做爰黄70片视频 | 精品国产乱码久久久久久丨区2区 | 高清欧美性猛交XXXX黑人猛交 | 国产成人三级一区二区在线观看一 | 亚洲AV香蕉一区二区在线观看 | 37p粉嫩大胆色噜噜噜 | 嫩草乱码一区三区四区 | 亚洲AV无码精品国产成人日日骚 | 午夜精品一区二区三区久久久播放 | 日本中文字幕在线 | 91麻豆成人精品国产免费网站 | 久久久久久亚洲无码av高清 | 少妇做爰XXXⅩ高潮欧美电影 | 东北少妇不戴套对白第一次 | 亚洲AV无码秘 蜜桃蘑菇 | 特级婬片A片AAA毛片咕噜咕噜 | 一级毛片久久久久久久女人18 | 亚洲精品一二三区 | 熟妇槡BBBB槡BBBB图 | 亚洲无码视频免费在线观看 | 亚洲欧美精品一区二区 | 中文字幕精品无码一区二区 | 国产熟女乱码A一级 | 欧美日韩高清在线一区 | 欧美一区二区三区免费A片按摩 | 红桃熟妇人妻熟女视频 | 亚洲精品久久久无码aⅴ片恋情 | 免费看黄 片,在线观看 | 国产精品无码在线播放 | 国产成人片91嫩草传媒 | 五十路近親相姦中出し親子 | 国产精品揄拍一区二区 | 全黄做爰毛片免费看 | 国产无码高清免费 | 精品中文字幕在线高清免费观看 | 性一交一夜伦A片一级毛片A级 | 成人网站一区二区 | 一级女婬片A片AAAA片 |