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 |
| 国产精品久久久久无码AV动图 | 日本a片永久免费观看网站 快灬快灬 一下爽蜜桃日本 | 又大又长又粗又硬又黄又爽无遮挡 | 久久精品一区二区三区免费播放 | 波多野结衣被射精子在线视频观看 | 国产黄色视频在线免费看 | 麻豆mv视频免费播放 | 日韩精品无码一区二区三区色欲传媒 | 做爰高潮A片免费看视频 | 免费无码婬aaaa片在线 | 高潮毛片无遮挡免费高清古代的 | 免费无码婬片AAAA片麻豆 | 国产精品免费无遮挡无码永久 | 免费黃色三級片在线观看18小说 | 成人AV一区二区三区无码电影 | 亚洲AV吞精久久久久 | 少妇喷白浆高清AV含羞草 | 日韩制服丝袜中文字幕乱伦网站 | 91丨国产丨精品丨丝袜 | 国产91 在线播放九色竹菊影视 | 亚洲高清在线观看视频 | 又爽又大AA片一区二区三区 | 国产拍在线观看不卡 | 免费黄色视频在线观看一区二区 | 韩国污污色情网站在线免费观看 | 成人在线免费黄色AV | 强制高潮(H)调教视频 | 377P粉嫩大胆色噜噜噜 | 免费无码婬AA片在线视频下载 | 真人一级毛片免费播放视频大全 | 欧美成人一级二级三级视频 | 女人裸体不穿衣服18禁露私处91传媒 | 性一交一免一费一视一频 | 狠狠色综合7777之夜色撩人 | 91人妻人人超人人爽 | 中文字字幕在线中文乱码一区 | 精品无码婬片AAAA视频 | 性猛交乄乱一区二区三区蜜桃视频 | 99精品乱码国产在线观看 | 国产三级久久久精品麻豆三级 |