Penntube

Summary of Properties Shrink Tube

Explanation of a term

Explanation of a term
C：Recoverd Wall Thicness　B：Recoverd ID　A：Expanded ID

Temperature-Shrink Rate

Temperature-Shrink Rate
Temperature-Shrink Rate
Temperature-Shrink Rate

Installation of Heat Shrink Tube

Selection and Cutting of Tube
Selection and Cutting of Tube
1. Select the Appropriate Tube
Selection and Cutting of Tube

Select a tube based on the purpose of tube covering, the location of the object being covered, the usage of the object, the conditions, frequency of usage, life of tube and quantity of tubes used.

2. Select the Size

The size of a tube is determined based on the ID of the tube before heat-shrinking and the diameter of the object so that the tube can be slipped over the object without difficulty.

3. Cutting

The length of the tube is determined based on the length of the area to be covered, shifting of the tube, the change in the tube length after heat-shrink, and the tolerance of cutting.

用語の説明

Summary of Properties, Extruded Fluoropolymers

The table below lists the generally-accepted summary of electrical,mechanical and thermal Properties of flurolymer resins.

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Property Unin Test of ASTM TFE PFA FEP
Physical Melting   D 3418 327 302-310 265-275
Specific Gravity — D 792 2.14-2.20 2.12-2.17 2.12-2.17
Water Absorption (24Hr.) % D 570 <0.01 <0.03 <0.01
Mechanical Tensile Strength MPa D 638 27.5-34.3 24.5-34.3 21.6-31.4
Elongation % D 638 200-400 300-400 250-330
Compressive Strength MPa D 695 11.8 16.7 15.2
Impact Strength J/m D 256A 159.8 No Break No Break
Bending Modulus GPa D 790 0.55 0.66-0.69 0.65
Tensile Modulus GPa D 638 0.40-0.55 0.40-0.50 0.34
Hardness (shure) — D 2240 D 50-55 D 60 D 55
Coetticient of Dynamic Friction (0.7Mpa 3m/min) D 1894 0.1 0.2 0.3
Thermal Max. Service Temperature No Pressure 260 260 200
Thermal Conductivity W/m•K C 177 0.25 0.25 0.25
Specific Heat J/g•K D 240 1.0 1.0 1.2
Linear Coefficient of Expansion 10-5/K D 696 10 12 8.3-10.5
Ballpressure Temperature — 180 230 170
Deflection Temperature  (1.81MPa) D 648 55 50 50
 (0.45MPpa) D 648 121 74 72
Electrical Linear Coefficient of Expansion -cm D 257
(50%RH.23)		 >1018 >1018 >1018
Dielectric Strength ‚‹V/mm
(3.2mm fhickness)		 D 149
(Short Term)		 19 20 20-24
Dielectric
Constant		   60 Hz
10 3 Hz
10 6 Hz
— D 150 <2.1 <2.1 2.1
— D 150 <2.1 <2.1 2.1
— D 150 <2.1 <2.1 2.1
Dielectric
Dissipation
Factor		   60 Hz
10 3 Hz
10 6 Hz
— D 150 <0.0002 <0.0002 <0.0002
— D 150 <0.0002 <0.0002 <0.0002
— D 150 <0.0002 0.0003 <0.0005
Arc Resistance sec D 495 >300 >300 >300
Others Flammability Rating (3.2mm fhickness) (UL 94) V-0 V-0 V-0
Limited Oxygen Index — D 2863 >95 >95 >95
Gas Permeafility N2
O2
cm3cm/cm2•sec•atm D 1434 1.1X10-8 1.4X10-8 1.2X10-8
(25)   3.2X10-8 4.8X10-8 3.7X10-8
Weather Resistance — — Unaffected Unaffected Unaffected