URETHANE (ß Poly Urethane)
Poly Urethane
Overview
Polyurethane is freely moldable with its hardness ranging from 20˚ ~ 120˚ and widely acknowledged as the only material that can be used to manufacture industrial materials that cannot be manufactured by other plastics.
Features
• Has high strength as well as rigidity.
• Has excellent adhesion to metal and other materials.
• Has excellent resistance to abrasion and oil.
• Has excellent chemical resistance to oxidation and aging.
Properties table |
Mechanical Properties |
Weight |
|
hardness |
|
Tensile strength kgf/㎠ |
|
Elongation % |
|
Coefficient of friction |
|
Thermal Properties |
Thermal conductivity Cal/cm sec.c10-4 |
|
Coefficient of Linear Thermal Expansion10-5/℃ |
|
Coefficient of friction.℃ |
|
specific heat Kcal℃ |
|
Flame-retardant |
|
Chemistry |
Inside one light-harvesting |
|
In the Acidic |
|
Inside the strong acid |
|
Internal weak alkaline |
|
Alkaline luminal |
|
내Organic solvents성 |
|
Electrical Properties |
Volume resistivityΩ-cm |
|
Dielectric Strengthkv/m/m |
|
Permittivity |
|
Dielectric strength ratio10-4 |
|
Main features |
Relatively high wear resistance Rebound |
• Strong elasticity and vibration absorption
