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U-polymer > U Series Top Page
[UNITIKA U-polymer]

U series resins (Transparent chemical-resistant grade)

U series resins are polymer alloys that are improved in resistance to oils and chemicals, the shortcoming of amorphous resins. They are transparent and have a greater moisture-blocking property than other resins having similar structures. They are also suitable for blow molding.

Characteristics
• Transparent, resistant to chemicals, especially to oils, alcohols and others
• Weather Resistance
• Blended into PET resins for improvement in heat resistance.

Properties
Print Table on A4 paper
Item
ASTM
Unit: SI
(conventional)
U-8000
U-8400H
Mechanical
Properties
Density
D-792
-
1.26
1.28
Water absorption (1/8", 24hrs)
D-570
%
0.15

0.12

Light transmittance (Thickness: 3mm)
D-1003
%
87
88
Tensile strength
D-638
MPa {kg/cm2}
71 {720}
63 {640}
Elongation at break
D-638
%
105
170
Bending strength
D-790
MPa {kg/cm2}
103 {1,050}
95 {970}
Bending modulus
D-790
GPa {kg/cm2}
2.7 {28,000}
2.5{26,000}
Compressive strength (Yield)
D-695
MPa {kg/cm2}
86 {880}
80 {820}
Izod impact strength
(1/8", with notch)
D-256
J/m
{kg-Ecm/cm}
108 {11}
69 {7}
Rockwell hardness
D-785
R
125
120
Thermal
properties
Deflection temperature under load
1.8MPa {18.6kg/cm2}
D-648
°C
110
95
Linear expansion coefficient
D-696
10-5/K
{10-5cm/cm/°C}
6.2
6.4
Electrical
Properties
Dielectric breakdown strength
D-149
MV/m {kv/mm}
44
30
Specific volume resistivity
D-257
Ωm {Ωcm}
2x1014
{2x1016}
2x1014
{2x1016}
Dielectric constant (106Hz)
D-150
PF/m
27 {3.0}
27 {3.0}
Dielectric dissipation factor(106Hz)
D-150
-
0.015
0.01
Ark resistance
D-495
s
120
120
Tracking resistance
IEC
V
232
-
Other
properties
Molding shrinkage
(Thickness: 3mm)
Flow direction, orthogonal direction
-
%
0.8
0.8

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