Jinzhou HuaFeng Quartz glass electrical Co.,Ltd .

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Jinzhou HuaFeng Quartz glass electrical Co.,Ltd .
Contact: Mr. Zhang
Mobile phone:15174082708
Mobile phone:13700069840
QQ:285692358
mailbox:zq@hfshiying.com
Address: No. 118, Jinchao Street, Guta District, Jinzhou
Performance

 

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)

Temperature

(℃)

Etching time(

小時)

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

 

 

 

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