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 |
| 日本又黄又硬又潮湿在线播放 | 国产精品粉嫩+91在线++B | 免费无码黄网站在线看软件99 | 女人卖婬全过片毛片免费观看 | 有 黄色的 网站在线观看 | 国产午夜精品一区二区三区四区 | 国产精品久久久久久久内无道 | 久久久精品无码人妻宝贝乖 | 成人性生交A片免费直播App | 少妇搡BBBB搡BBB搡视频一级 | 人妻人人做人人澡人人添 | 一区二区成人色情网站 | 国产熟妇一区二区三区AⅤ网站 | 亚洲国产精品成人A片一区二区 | 国产女敦师一级爽A片 | 久久精品亚洲日本 | 爽擼18cm又大又粗的雞巴影视 | 欧美日韩一区二区三区四区 | 久久久久久久久久久久久久久久久久久 | 竹菊视频一区二区三区 | 精品国产一区二区三区不卡蜜臀 | 国产在线视频不卡地址发布 | 白嫩人妻成人精品久久 | 品善网AV无码在线播放 | 91福利姬精品高潮在线观看 | 性高湖久久久久久久久免费 | 91/竹菊/国产熟女 | 国产成人亚洲精品无码樱花 | 老色鬼视频77777AV | 成人黄色电影在线免费观看 | 边添小泬边狠狠躁视频网站动漫 | 欧一美一黄一色一色一色 | 欧美色图深深插狠狠插 | 国产日产欧产美韩系列麻豆 | 国产精品亚洲YOURPORT | 91人妻人人爽人人精品 | 国产熟妇毛多 A片欧美蜜臀 | 国产熟妇一区二区三区AⅤ网站 | 人人妻人人澡人人爽欧美一区九九 | 婷五月丁香乱伦电影网站 |