Cross-linked PTFE
®
EXCERON
Hitachi Metals Ltd.
Introduction
(1) What is Polytetrafluoethylene (PTFE)?
Structure of PTFE
F: Fluorine, C: Carbon
Polytetrafluoethylene (PTFE) constitutes of fluorine and
carbon elements and its structure is one of the simplest
among the various fluoroplastic materials. Because of
its exceedingly good characteristics in electrical
insulation
properties,
chemical
resistance,
non-adhesiveness, and low friction factor, PTFE is
widely used in various industries, including but not
limited to: electric cables, semiconductor, pharmaceutical, food, and clothing.
(2) What is Cross-link?
Cross-links are bonds that link one polymer chain to another. Generally, there are several ways to
cross-link, such as radiation cross-linking or chemical cross-linking. Various kinds of plastics are
produced from these methods.
Cross-linking
Example
®
(3) What is EEXXCCEERRO
ON
N®？
PTFE is chemically stable and generally not cross-linked by
chemical method. Also, it is vulnerable to radiation and will
be decomposed by it.
Structure of Cross-linked PTFE
Hitachi Cable developed its unique irradiation technology
®®
to cross-link PTFE, and thereby brought EEXXCCEERRO
ONN®, the
distinguishing and completely new material to the market.
®
Features of EXCERON ®
(1) Abrasion resistance is more than 1,000 times improved in from PTFE.
(2) Minimum damage to the material rubbed against – even when it is plastic or
soft metal such as aluminum.
(3) Better creep resistance than PTFE in both high and room temperature.
(4) Springy characteristic that PTFE does not have.
(5) Processing can be performed like PTFE - cut, paste, fusion, etc.
®
Variation of EXCERON ®
®®
N® to satisfy various needs of customers.
ON
There are two types of EEXXCCEERRO
Type
Features
Abrasion
resistance
Creep
resistance
Purity
- Multi-purpose friction material
with improved abrasion resistance.
- Processing can be performed like
general PTFE.
Good
Fair
Excellent
- Friction material for highly rough
surface, with improved abrasion
resistance and creep resistance.
- Processing can be performed like
general PTFE.
Excellent
Good
Excellent
Form
XF1A
Standard
Block
Sheet
XF1B
High performance
Comparison against Other PTFE Materials
((11)) Abrasion resistance
®®
EEXXCCEERRO
N® has better abrasion resistance and friction coefficient than PTFE.
ON
XXFF11AA
JIS K 7218 Ring on disk
Average roughness of the counter-material
(Ra):0.2μm
PV=51.2(P=0.4MPa,V=128m/min)
Measurement time: 50h
XXFF11BB
Stainless steel (SUS304)
Aluminum( ADC12)
Glassfiber
reinforced
PTFE
Denaturation
PTFE
PTFE
1
10
102
103
104
-8
3
Ware rate（10 ×mm /N*m）
105
0.3
0.4
106 0.2
Friction coefficient（μk）
Weight (P)
Rubbed
Material
Sample
Fig1 PTFE
Examination time: 5min
Fig2 XF1B
Examination time：3,000min
((22)) Impact to the rubbed material
®®
EEXXCCEERRO
N® is non-filler PTFE and hardly damages the material rubbed against.
ON
Before TEST
XXFF11AA
555000hhh
Glass fiber reinforced PTFE
0.5h
Aluminum
surface
Surface
Roughnes
s
0
0
(μm)
径方向の距離 (mm)
Diametrical distance
((33)) Creep resistance
®®
EEXXCCEERRO
N® has better creep resistance than PTFE in both high and room
ON
temperature.
ＸＦ1A
Removing Load
XF1B
Total deformation
Compression creep
Glass Fiber
reinfoerced PTFE
Momentary strain
10S
Denaturation
PTFE
24hr
Time
ＰＴＦＥ
0
5
10
15
Compression creep（200℃）
Compression%
creep（room Temp)
Parmanent deformation(200℃）
Parmanent deformation(room Temp)
20
Permanent
48hr
EXCERON®® Basic Products
Size
Form
Rod
*Available in other forms such as in cylindrical and
angular.
Square
Sheet
XF 1A (Width MAX 300mm) t=0.3～2.0mm
XF 1B (Width MAX 300mm) t=0.3～2.0mm
*Please contact us about other sizes, dimensions and
availability.
EXCERON®® Processed Products
Product
Lip Seal
Feature
1.
2.
3.
4.
High durability
Low torque
Non-filler
Spring-less
Application
・ Gas seal of a pump
・ Oil seal of a motor
・ Semiconductor
・ Chemical
・ Industrial machines
1. High durability
2. Low torque
3. Non-filler
・ Ball valve for pipe
・ Semiconductor
・ Chemical
・ Food
Compound Sheet
(rubber and XF)
1.
2.
3.
4.
5.
High durability
Low friction coefficient
Non-adhesiveness
Non-filler
Cushioning properties
・ Exfoliation material(sheet)-used
for a metallic mold
・ Lining
・ Slide material for industry
・ Food
Dice
1.
2.
3.
4.
High durability
Heat resistance
Low friction coefficient
Non-filler
・ Capable of
extrusion
・ Clothing
・ Food
Valve Seal
injection
and