Home > 테프론관련 기술자료실 > 불소수지코팅의 제조공정

MECHANICAL PROPERTIES
Property
ASTM Standard
Unit
Teflon PTFE
Teflon FEP
Teflon PFA
Teflon ETFE
Specific Gravity
D792
 
2.15
2.15
2.15
1.76
Tensile Strength
D1457, D1708, D638
Mpa
psi
21-35
3,000-5,000
23
3,400
25
3,600
40-47
5,800-6,700
Elongation
D1457, D1708, D638
%
300-500
325
300
150-300
Flexural Modulus
D790
Mpa
psi
500
72,000
600
85,000
600
85,000
1,200
170,000
Folding Endurance
D2176
(MIT)
cycles
>10
5-80X10
10-500X10
10-27X10
Impact Strength
D256
J/m
ft · lb/in
189
3.5
No break
No break
No break
Hardness
D2240
Shore D
pencil
50-65
HB
56
HB
60
72
Abrasion Resistance
■ Bell Abrasion(1)
■ Sliding Arm(2)
■ Tabor Abrasion(3)


g/㎛
mg
mg

85
7.9-9.7
12


11.1-15.2
14.8
 


13.4

Scratch Resistance
Scratch Master
■ initial(4)
■ complete(5)

 


kg
kg


5.7-7.0
7.3-10.7


5.1-11.4
8.5-13.2
 
 
Coefficient of Friction
■ static
■ dynamic
D1894
 

0.12-0.15
0.05-0.10

0.12-0.20
0.08-0.3

0.2

0.24-0.50
0.3-0.4
Contact Angle
■ water
 
degree
104˚-111˚
95˚-105˚
104˚-111˚
90˚-100˚

Notes:

1.
Bell Abrasion Tester : grams abrasive/Micrometers
2.
Sliding Arm Test : 1,000cycles, 500gr load, 400 Emery paper, 35.5 sq. cm surface
3.
Tabor Abrasion : Cs 17 wheel, 1kg load, 1,000 cycles, weight loss in mg
4.
Scratch Master : initial = first sign of substrate
5.
Scratch Master : complete = total removal of film
6.
Salt Spray Resistance : 5% NaCl@35℃/95℉, hours to failure
7.
Detergent Resistance : hours to failure
8.
Dielectric Strength : 100 micrometers film

The values shown in this table represent average experiences from numerous testing sources and are not intended to be specifications. These values will vary depending upon the individual compositions of the primers and topcoats and the systems used. For further information on the properties of these coating systems, and examples of how they have led to the development of new products, increased production rates and resultant cost savings, you should consult DuPont or a Licensed Industrial Applicator.

All technical advice, application suggestions, recommendations and services are rendered by the Seller gratis. They are based on technical data which the Seller believes to be reliable and are intended for use by persons having skill and know-how, at their own discretion and risk.
Seller assumes no responsibility for results obtained or damages incurred from their use by Buyer in whole or in part. Such technical advice, application suggestions, recommendations or services are not to be taken as a license to operate under, or intended to suggest infringement of, any existing patent.

THERMAL PROPERTIES
Property
ASTM Standard
Unit
Teflon PTFE
Teflon FEP
Teflon PFA
Teflon ETFE
Melting Point
D3418

327
621
260
500
305
582
267
512
Cure Temperature
 

380-430
715-805
360-390
680-735
380-400
715-750
300-325
575-615
Max. Use Temperature
■ Continuous

■ Intermittent

 





290
550
315
600

205
400
230
450

260
500
290
550

150
300
200
390
Flame Rating**
UL94
 
V0
V0
V0
V0
Limiting Oxygen Index
D2863
%
>95
>95
>95
30-36
Heat of Combustion
D240
MJ/kg
Btu/lb
5.1
2,200
5.1
2,200
5.3
2,300
13.7
5,900
Thermal Conductivity
 
Btu·in/h·ft²℉
W/m·k
1.7
0.25
1.4
0.20
1.3
0.19
1.65
0.24


CHEMICAL PROPERTIES
Property
ASTM Standard
Unit
Teflon PTFE
Teflon FEP
Teflon PFA
Teflon ETFE
Chemical/Solvent
Resistance
D543
 
Excellent
Excellent
Excellent
Excellent
Water Absorption, 24h
D570
%
< 0.01
< 0.01
< 0.03
< 0.03
Salt Spray Resistance(6)
■ on aluminum
■ on steel
B-117

Hours
hours

744+
192

744+

1000

1000
Detergent Resistance(7)
■ on aluminum
■ on grit-blasted aluminu
■ on grit-blasted steel
 

hours
hours
hours

264
624
24

744
600
480
 
 
Weather Resistance
Florida Exposure
Years Unaffected
20
20
10
15


ELECTRICAL PROPERTIES
Property
ASTM Standard
Unit
Teflon PTFE
Teflon FEP
Teflon PFA
Teflon ETFE
Dielectric Constant
D150
1㎒
2.1
2.1
2.1
2.6
Dielectric Strength(8)
D149
V/㎛
18
53
80
79
Dissipation Factor
D150
1㎒
<0.0001
0.0006
0.0001
0.007
Arc Resistance
D495
sec
>300
>300
>180
122
Volume Resistivity
D257
ohm · cm
>10
>10
>10
>10
Surface Resistivity
D257
ohm/sq
>10
>10
>10
>10
**Statements regrarding behavior in a flame situation are not intended to reflect hazards presented by this or any other material when under actual fire conditions.

Water Vapor Transmission Rates of Teflon FEP Film, 25 micrometers (1 mil) thickness/per ASTM E-96(modified)
Values measured on thicker specimens and converted to 25μ(1 mil)
Vapor
Temperature ℃
g/100 sq. inch or g/645 sq.cm (24 hours)
Acetic Acid
35˚
.41
Acetone
35˚
.95
Acetophenone
25˚
.50
Benzene
35˚
.64
Carbon Tetrachloride
35˚
.31
Ethyl Acetate
35˚
.76
Hexane
35˚
.56
Hydrochloric Acid, 20%
25˚
<.01
Piperidine
25˚
.04
Red Fuming Nitric Acid
25˚
7.5-1.4
Sodium Hydroxide, 50%
25˚
<.01
Sulfuric Acid, 98%
25˚
.00001
Water
39.5˚
.40

Water Vapor Transmission Rate of Teflon FEP film at 40℃/104℉ per ASTM E-96 (modified)   Permeability of Teflon FEP film to gases at various temperatures
 

 

Property Comparison of Various Fluoroplastics
Physical properties
Property
ASTM test
method test
condition
PTFE
PFA
FEP
ETFE
PVDF
E-CTFE
Specific Gravity
D792
2.13~2.22
2.12~2.17
2.12~2.17
1.70~1.76
1.76~1.78
2.10~2.18
Water absorption
(%)
D570/24h⅓"t
<0.00
<0.01
<0.01
<0.1
0.04
<0.00
Mold shrinkage
(㎝/㎝)
 
0.02~0.05
0.04
0.03~0.06
0.03~0.04

0.014

0.015~0.020
Contant angle
(degree)
Angle to level
110
115
114
96
82
84

Thermal properties
Property
ASTM test method test condition
PTFE
PFA
FEP
ETFE
PVDF
E-CTFE
Thermal
conductivity
(cal/sec/㎠,
℃/㎝)
C117
6X10
-
6X10
5.7X10
3.0X10
4.7~5.3X10
Coefficient of
linear thermal
expansion(1℃)
D696/23~60℃
10X10
12X10
8.3~10.5
X10
5~9 X10
4.2 X10
4.5~7.0
X10
Melting point ℃
Melting point ℉
 
327
620.6
302~310
545.6~590
270
518
260
500
173~175
313.4~317
210~212
410~413.6
Melt viscosity
(poise)
 
10~10
(340~380℃)
10~10
(380℃)
4X10~10
(300~330℃)
10~10
(300~330℃)
2X10~10
(210~270℃)
10
(23℃)
Maximum temp for continuous
use (℃/℉)
 
280/500
260/500
200/292
150/302
150/302
120/243

Mechanical properties
Property
ASTM test method
test condition
PTFE
PFA
FEP
ETFE
PVDF
E-CTFE
Tensile strength
MPa(psi)
D638/23℃
13.7~34.3
(1987~4975)
27.4~30.9
(3974~4482)
18.6~21.6
(2698~3133)
40.2~46.1
(5831~6686)
39.2~58.8
(5685~8528)
31.4~41.2
(4554~5976)
Elongation(%)
D638/23℃
200~400
280~300
250~330
420~440
300~450
80~250
Compression strength
MPa(psi)
deformation, 25℃
4.9~5.9
(711~856)
4.9~5.9
(711~856)
4.9~5.9
(711~856)
10.7
(1552)
12.6~13.7
(1827~1987)
8.8~11.8
(1276~1711)
Tensile modulus
MPA(psi)
D638/23℃
392.2
(56884)
-
343.2
(49777)
490.3~784.5
(71112~11378)
784.5~1961.3
(113782~284463)
1029.7~2059.4
(149346~298691)
Flexural modulus
MPa(psi)
D790/23℃
490.3~588.4
(71112~85340)
647.2~686.5
(93869~99569)
539.4~637.4
(78233~92447)
882.6~1372.9
(128011~199123)
137.3~1765.2
(19914~256021)
1274.9~1765.2
(184909~256021)
Inpact strength(ft-lb/in)
D256/23℃, lzod
3.0
-
No breakdown
No breakdown
20.7
2.5~2.7
Hardness(Shore)
Durometer
D50~D65
D60
D55
D75
D75~D85
D90
Deformation under
load(%)
D621/100℃
6.8MPa(986 psi),
24h
D621/25℃
13.7MPa(1987 psi),
24h
5.0


7.0
2.4


2.7
5.0


3.0
5.4


2.3
2.4


0.7
2.6


0.2
Static friction coefficient
Coated-steel surface
0.02
0.05
0.05
0.06
0.4
0.08


Electrical properties

Property
ASTM test method test condition
PTFE
PFA
FEP
ETFE
PVDF
E-CTFE
Dielectric constant
D150/10
D150/10
2.1
2.1
2.1
2.1
2.1
2.1
2.6
2.6
7.72
6.43
2.3~2.7
2.3~2.5
Dielectric dissipation
factor
D150/10
D150/10
<1X10
2XX10
1X10
3X10
6X10
5X10
8X10
5X10
1.9X10
0.159
(2.3~2.7)X10
1X10
Dielectric breakdown Strength(V/mil)
D149/Short time,
1/8 in
480
500
500~600
400
260
500~600
Volume resistivity
(ohm-㎝)
D257
<10
<10
<10
<10
2X10
<10
Chemical resistance
Weatherability
Combustibility(%)


D2863/Oxygen
Concentration
index
Excellent
Excellent
<95
Excellent
Excellent
<95
Excellent
Excellent
<95
Excellent
Excellent
31
Good
Excellent
43
Excellent
Excellent
<95

본사 및 공장 : 경북 경산시 자인면 교촌리 381-15 / TEL : (053) 852-9042~9044 / FAX : (053) 852-9045 / Mail : gukshin@unitel.co.kr