Thermal conductive adhesive transfer tapes
Flexible.Highly thermal conductive.
Products Category Double coated tapes
Please select the product name :  
UT3840

Product name

 UT5918W

Suitable use

 For thermal conductivity

Application

 Computers / AV / Cellular phones

Features
  • High thermal conductivity.
  • Non-carrier and high adhesion to curved surface.
  • High heat resistance. Good adhesion even at 120°C.
  • Environmentally friendly, non-solvent manufacturing method.
  non-solvent manufacturing method
 
   
Structure

Specifications
Product name UT5918W
Main component Acrylic base
Carrier Non-carrier
Color White
Adhesive thickness(µm) About 180
Release film thickness (µm) About 75 + 50
Bonding strength(N/20mm) 23
St'd size (width & length) 480mm x 480m

Application Example
 
For applications where thermal conductivity is required, such as adhesion of IC's and heat dissipating sinks.
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Technical Data
1.Bonding strength on various type of substrate (90° peeling) 90° peeling strength test
Test Piece Condition
Tape width: 20mm
Bonding condition One stroke with 2-kg roller
Measuring condition: 23°C±5°C 60%±20%RH
Peel speed: 300mm/min
Backing material: 40 µm Aluminum foil
  • [Left at RT for one hour before measurement]
Results
(N/20mm)
Substrate SUS ABS Aluminum PI
90° peeling strength 25.4 16.2 14.8 14.2
2.Bonding strength on various type of substrate (180° peeling) 180°Peeling strength test
Test Piece Condition
Tape width: 20mm
Bonding condition One stroke with 2-kg roller
Measuring condition: 23°C±5°C 60%±20%RH
Peeling speed: 300mm/min 
Backing material: 40 µm Aluminum foil
  • [Left at RT for one hour before measurement]
Results
(N/20mm)
Substrate SUS ABS Aluminum PI
180° peeling strength 13.8 10.8 10.5 11.0
3.Holding Power at different temperatures Holding power test
Test Piece Condition
Substrate: Stainless steel plate (SUS304)
Bonding area: 25mm x 25mm
Bonding condition: One stroke with 2-kg roller
Backing material: 40 µm Aluminum foil
  • [Left at RT for one hour and then at each temperature for 30 minutes before measurement]
  • [Creep length after one hour application of 1-kg load]
Results
Measurement temperature 80°C 120°C
Holding Power(mm) 0.3 0.4
4.Reliability of bonding strength after adhesion under different conditions (180° peeling)
180°Peeling strength test
Test Piece Condition
Tape width: 20mm
Bonding condition One stroke with 2-kg roller
Measuring condition: 23°C±5°C 60%±20%RH
Peel speed: 300mm/min 
Backing material: 40 µm Aluminum foil
  • [Left at RT for one hour and aged under each test condition before measurement]
Results
(N/20mm)
180° peeling strength Name Initial 1Week 2Weeks
AL 40°C 10.5 11.0 12.5
40°C90% 14.6 15.2
70°C 14.1 13.4
PI 40°C 11.0 11.9 12.9
40°C90% 12.5 13.4
70°C 13.9 14.1
5.Bonding strength at different temperatures (180° peeling) 180°Peeling strength test
Test Piece Condition
Substrate: Stainless steel plate(SUS304)
Tape width: 20mm
Bonding condition One stroke with 2-kg roller
Measuring condition: 23°C±5°C 60%±20%RH
Peel speed: 300mm/min 
Backing material: 40 µm Aluminum foil
  • [Left at RT for one hour and then at each temperature for 30 minutes before measurement]
Results
(N/20mm)
Measurement temperature -20 0 23 40 60 80
180° peeling strength Jerky fracture Jerky fracture 13.8 13.7 11.8 11.8
 
6.Electrical property 1 (surface resistance)
Test Piece Condition
Measurement voltage: 500V
CHARGE TIME: 60sec
Initial: Left at RT (23°C65%RH) for one day before measurement
Moisture resistance: Left at 60°C95%RH for 4 days before measurement.
Results
    Initial Moisture resistance
Surface resistance(Ω) (1) 1.5 x 1012 1.5 x 1012
(2) 1.5 x 1012 1.5 x 1012
(3) 1.5 x 1012 1.5 x 1012
(4) 1.5 x 1012 1.5 x 1012
7.Electrical property 2 (dielectric voltage, withstand voltage)
Test Piece Condition
Setting current: 0.5mA
Voltage rate of climb: About 0.1kV/sec (manual operation)
Setting current: 0.5mA
Judgment: The voltage value which maintains insulation for 1 minute was set to withstand voltage.
Results
Dielectric voltage Measured value(KV) 4.95
Withstand voltage Measured value(KV) 4.08
Dielectric voltage(KV/mm) 26.76
Withstand voltage(KV/mm) 22.05
8.Thermal conductivity: based on a quick thermal conductivity meter
Results
Product No. UT5918W Traditional adhesive tape
(150µm)
Thermal conductivity (W/(m·K)) 0.29 0.20
Heat resistance (°C/W) 0.61 0.76
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caution The technical data in this document, which was acquired based on reliable tests, does not guarantee full performance as per the documentation in any instance. Users assume total responsibility and risk for use of this product for any purpose under any usage conditions.