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Okamoto Glass Co. Ltd. UV479

Sold by Okamoto Glass Co. Ltd.
Product Type: Coating
Features: Temperature Resistance, UV Resistant, Good Weather Fastness, High Reflectivity, High Temperature Resistance, High Durability
Application Method: Spray, Offset, Lithography
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TypeDocument Name
Technical Data Sheet
Okamoto Glass Co. Ltd. UV479 Technical Data Sheet
Okamoto Glass Co. Ltd. UV479 Technical Data Sheet
Technical Data Sheet
Technical Data Sheet
High Reflection Resist Inks Technical Data Sheet
High Reflection Resist Inks Technical Data Sheet
Technical Data Sheet
Safety Data Sheet
Okamoto Glass Co. Ltd. UV479 Safety Data Sheet
Okamoto Glass Co. Ltd. UV479 Safety Data Sheet
Safety Data Sheet

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Identification & Functionality

Product Type
Technologies
Ready-to-Use Products

Okamoto Glass Co. Ltd. UV479 Features & Benefits

Superiority
  • In the UV-C band region (250 to 280 nm), about twice as high reflectance as
    aluminum substrate (UV479: 95.6% / Aluminum substrate : 49.3%)
  • High durability allows operation even at high output
  • Our products enable customers to apply for complexity in shape.

Applications & Uses

Properties

Color
Typical Properties
ValueUnitsTest Method / Conditions
AdhesivesAl / SUS--
Breakdown Voltage (Thickness 47μm on Al)3.2KV10sec / Electrode distance 20mm
Coating MethodScreen printing--
Coating MethodSpray--
Insulation Resistance (Thickness 47μm on Al)1.7×10^9Ω500V / 10sec / Electrode distance 20mm
Reflection (at 265nm, Thickness 30μm or more)min. 90%Reflectance is relative comparison with Spectralon® (Porous PTFE)
Viscosity (at 10 rpm, Screen printing)10 - 70Pa.sViscosity can be adjusted by the customer coating conditions.
Viscosity (at 10 rpm, Spray)10 - 30Pa.sViscosity can be adjusted by the customer coating conditions.

Technical Details & Test Data

Technical Information
  • UV sterilization is expected as the valuable technology to disinfect bacterial, virus thereat around us.
  • High efficient reflection coating for UV wavelength 250~400nm.
  • Thermal curing ink (main + agent) for screen printing, also we can provide printing service too.
  • Reflection UV479 : min. 90% @265nm
  • Endurance:
    Thermal R change within <5% at 200℃/2000hours
    High temp & humidity R change within <5% at 60℃-90%/2000hours
    UV resistance R change within <5% at 26mW/cm2, 270nm/2000hours
Reflectance

 

Okamoto Glass Co. Ltd. UV479 Technical Information - 1

Thickness Dependence
Okamoto Glass Co. Ltd. UV479 Technical Information - 2Substrate Dependence

Okamoto Glass Co. Ltd. UV479 Technical Information - 3

Comparison of Reflection Characteristics in UV-C Area

Okamoto Glass Co. Ltd. UV479 Comparison of Reflection Characteristics in UV-C Area

UV Durability Test Result

Okamoto Glass Co. Ltd. UV479 UV Durability Test Result

Durability Evaluation Example
Test item Test condition Result
Heat resistance
test
200°C
×1,000 hours
No decrease in
reflectance
more than 5%
Constant
temperature and
humidity test
60°C/90%
×1,000 hours
Cycle test 25°C↔260°C
10 cycles
No peeling or
discoloration
Mixing and Curing Conditions
Mixing
ratio
Material Concentration
Main material (UV479) 100wt%
Curing material (OG840) 2.0wt%

Note: Adjust the viscosity with diluent if necessary.

Curing Process Apparatus Temperature Retention time
Drying Box oven / Belt dryer 90°C 10 min.
Curing 180°C 180 min.

Note: The dryer should be well ventilated.
Make sure that the surface is sufficiently dry
when you touch it with your finger.
Please cure until you feel it.

High Temperature Resistance

Holding Temperature : 200°C

Okamoto Glass Co. Ltd. UV479 High Temperature Resistance

Weatherability

Holding Condition : 60°C 90%RH

Okamoto Glass Co. Ltd. UV479 Weatherability

UV-C resistance

Irradiation Condition: 26mW/cm2@270nm

Okamoto Glass Co. Ltd. UV479 UV-C resistance

Adhesive
  • Cross Cut Test before and after Thermal shock test
  • Thermal shock test condition : 260°C→25°C water × 10times
  UV479
before/after
Al 0/0
Cu  
SUS 0/0

Okamoto Glass Co. Ltd. UV479 Adhesive

Recommended Blending Conditions

Blending condition

Blend Ratio

  • Main Body : UV479 = 100 wt%
  • Curing Agent OG840 for UV479 = 2.0 wt%
  1. Pick Main Body up from the refrigerator
  2. And Keep it in the room and store until main body up to room temperature (>6 Hours) as unopened (Avoid Dew condensation)
  3. Curing Agent solution should NOT be in the refrigerator.

Thinner

  • In case it need to adjust viscosity

Storage condition

  • Main Body : OG461, UV478, UV479) = 5°C (Refrigerated storage below 5°C)
    Shelf Life: 3 Months after manufacturing
  • Curing Agent : OG830, OG831, OG840 = Room Temperature
    Shelf Life : 6 Months after manufacturing
Recommended Curing Conditions

Drying Condition

  • 90°C for 10 min in the Box Oven or Equivalent Heat amount of Belt dryer

Curing Condition

  • UV479 : 180°C for 120~180 min(minimum) in the Box Oven or Equivalent Heat amount of Belt dryer
  • Feel dry surface by the finger touch is good enough in the above condition
Okamoto Glass Co. Ltd. UV479
Okamoto Glass Co. Ltd.