Specification. - Thin Glass D PCP D 263 T eco. Advanced Materials SCHOTT AG. Physical and chemical properties

Transcription

1 CHOTT AG - Thin Glass D (thin glass) is a clear borosilicate glass of high chemical resistance. The characteristics of this special composition substrate glass make it suitable for a variety of applications, i. e. - Touch control panel - LCD - Electroluminescent displays - olar cells - Micro scales for measuring devices - Glass substrate for coatings This glass meets the latest environmental requirements of our customers. The subsequent properties are based primarily upon the measuring results of the very latest standards and measuring methods, which are defined in corresponding "Measuring and Test Procedures". We retain the right to change the data in keeping with the latest technical standards. Non-toleranced numerical values are reference values of an average production quality. Values marked with do not apply to the type of glass or no values are available. Requirements deviating from these specifications must be defined in writing in a customer agreement page: 1 to 9

2 CHOTT AG 1. Optical properties 1.1 Refractive indices Pretreatment of samples n g Condition as supplied n F ["as drawn"] n F n e ± n d n D n C n C Abbe value ν e Transmittance data pectral transmittance τ (λ ) τ (λ ) - curve Plot of spectral transmittance τ (λ ) for d = 0.15 mm (λ = 250 nm to 2000 nm) see annex d = 0.40 mm (λ = 280 nm to 800 nm) see annex τ (λ ) - individual values (d = 1.1 mm) λ in nm τ (λ ) in % Edge wavelength (d = 1.1 mm) Edge wavelength λ c (τ = 0.46) in nm Luminous transmittance τ vd65 in % (d = 1.1 mm) 91.7 ± page: 2

3 CHOTT AG 2. Thermal properties 2.1 Viscosities and corresponding temperatures Designation Viscosity Temperature lg η in dpas ϑ in C train point Annealing point oftening point Forming temperature Forming temperature Forming temperature Transformation temperature Tg in C Coefficient of thermal expansion α Coefficient of mean linear thermal expansion α (20 C;300 C) in 10-6 K -1 (tatic measurement) Fuseability 2.5 Mean specific heat capacity c p (20 C to 100 C) in J/(g K) page: 3

4 CHOTT AG 3. Mechanical properties 3.1 Density ρ in g/cm³ (annealed at 40 C/h) tress optical coefficient C in m²/n Breaking strength A higher mechanical strength can be realized by chemical toughening according to the ion exchange procedure (refer to annex 3.3.1) Chemical toughening (d = 0.15 mm) Processing temperature ϑ in C 410 Processing time t in h 4 Compressive stress Ds as birefringence in nm/cm 6800 Penetration depth Nz up to neutral zone in µm 36 Further information see annex 3.4 Young's modulus E in kn/mm² Poisson's ratio µ Torsion modulus G in kn/mm² Knoop hardness HK 0.1/ page: 4

5 CHOTT AG 4. Chemical properties 4.1 Hydrolytic resistance acc. to DIN IO Acid resistance acc. to DIN Alkali resistance acc. to DIN IO Hazardous ubstances Hydrolytic class HGB 1 Equivalent of alkali (Na 2 O) per gram of glass grains in µg/g 20 EC-directive 2002/95/EC (RoH-directive) Acid class 2 Half surface weight loss after 6 hours in mg/dm² 1.4 Class A 2 urface weight loss after 3 hours in mg/dm² 88 Test Items RoH Limit RL Value in mg/kg in mg/kg in mg/kg Cadmium (Cd) * Lead (Pb) < RL* Mercury (Hg) < RL** Hexavalent Chromium (Cr(VI)) < RL*** Polybrominated biphenyls (um of PBBs) < RL**** Polybrominated diphenyl ethers (um of PBDEs) < RL**** Additional Hazardous ubstances Test Items RL Value in mg/kg in mg/kg Antimony (b) calculated as b 2 O 3 50 < RL* Arsenic (As) 50 < RL* Phosphorus (P) 50 < 100* *acc. to EN IO after digestion with nitric/hydrofluoric acid; determination by ICP-OE **acc. to DIN EN 1483 after digestion with nitric/hydrofluoric acid; determination by CV-AA ***acc. to IEC CDV Ed.2, C4; determination by UV/VI pektrometry **** acc. to high-resolution gas chromatography with mass-selective detector (GC/M) after soxhlet extraction with toluene based EPA 3540C; 1 Extractable fraction, RL = Report Limit, < RL = below Report Limit page: 5

6 CHOTT AG 5. Electrical properties 5.1 Dielectric constant (Permittivity) ε r at 1 MHz Dissipation factor tan δ at 1 MHz Electric volume resistivity ρ D in Ω cm at the specified temperatures ρ D for alternating current 50 Hz ϑ = 250 C ϑ = 350 C Other properties 6.1 Compaction Compaction specifies small negative changes in length which may occur after heat treatment (ϑ > 250 C) made by the customer. An anti-compaction treatment can be made by CHOTT AG after determination of the required temperature profile. 7. Annex (diagrams, curves) page: 6

7 CHOTT AG Annex pectral Transmittance Type of Glass: Thickness: 0.15 mm Wavelength λ in nm Transmittance τ in % page: 7

8 CHOTT AG Annex pectral Transmittance Type of Glass: Thickness: 0.4 mm Wavelength λ in nm Transmittance τ in % page: 8

9 CHOTT AG Annex Chemical toughening parameter Glass and chemical toughening parameters Transformation temperature C 557 Glass thickness mm 0.15 Processing time h 4 Processing temperature C 410 alt bath (* weight percentages) KNO 3 in % * 99.5 io 2 x H 2 O in % * 0.5 Chemical toughening results * Penetration depth µm 36 Birefringence nm/cm 6800 * measured across at a sample piece ground down to 0.3 mm ± 0.05 mm Ball drop test acc. FDA % failed not carried out Ball drop test acc. DIN % failed not carried out Birefringence in nm/cm Processing temperature in C page: 9