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Characteristics of Polyimide Tubing

Thermal Endurance

Test method
Sample: 1.0mm Polyimide enamelled wire
Applied Voltage: 165VAC

Thermogravimetric Analysis

Test method
Sample: Polyimide film 3mg
Heating rate: 5°C/min.

Chemical Resistance

Test sample: PIT-S 1.0mm x 0.060mm (0.5mm in inside diameter, 0.06mm in wall thickness)
Test condition: Dipping in each chemical for 30 days at room temperature.

Chemical Tensile strength (N) Breakdown voltage (kV)
(original) 24 12.3
Tap water 24 11.8
Hydrochloric acid(5%) 22 11.8
Sulfuric acid(5%) 22 11.5
Xylene 21 11.5
Cresol 21 12.3
Methanol 23 11.0

Heat Cycle (cold-heat) Test and Continuous Cooling Test

Sample: PIT-S 0.5mm x 0.060mm

Test condition

(1) Heat Cycle Test - 1 cycle:
Dipping in liquid nitrogen(-196°C) for 5 minutes
90°C for 10minutes
25°C for 3 minutes.

(2) Continuous Cooling Test :
Dipping in liquid nitrogen(-196°C) for 20 hours

Item of test Cold-Heat Cycle Test Continuous Cooling Test
Test Condition non heat 10cycles 20cycles 30cycles 20hours
BDV(kV) max. 13.6 14.0 16.2 12.8 14.0
min. 11.8 12.8 11.4 11.1 12.6
average 12.4 13.8 12.4 11.8 13.8

Resistance to Radiation

 

Samples: PIT-S 0.5mm x 0.060mm, 1.0mm x 0.060mm

Property Exposure Dose
0 1Mrad 10Mrad 100Mrad
Tensile Strength(N) 0.5mm 24 22 23 22
1.0mm 52 53 52 50
Breakdown Voltage(kV) 10<

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