Polyarylate resin

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

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

Properties

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