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÷åàõ /
Properties		 单êÈ /
Unit		 ASTM Test
Method		 TFE
(PTFE)		 FEP PFA
Úª×âàõ质
Physical		 Ýïñì
Speacific gravity		 - D792 2.14-2.20 2.12-2.17 2.12-2.17
éÂïÃ
Melting point		 ¡É D3418 327 253~282 302~310
ÏõÌþàõ质
Mechanical		 ÕÃãßË­Óø
Tensile strength		 kgf/§² D638 280~350 200~320 320
ÕÃãßáã
Elongation		 % D638 200-400 250-330 280-300
压缩Ë­Óø
Compressive
strength		 kgf/§² D695 120 150 -
ÕÃãß弹àõáã
Modulus of
elasticity in tension		 10©økgf/§² D638 4 3.5 -
弯ÍØ弹àõáã
Modulus of
elasticity in bending		 10©økgf/§² D790 3.5-6.3 6.7 6.7-7.0
ÓÕ击Ë­Óø
IZOD Impact strength		 §¸¡¤§¯/§¯ D256 16.3 Not
Destroyed		 Not Destroyed
ÌãÓø
Hardness
 Roc
kwell		 D785 R25 R25 -
Duro
meter		 D2240 D55 D55 D60
热àõ质
Thermal		 热传导Óø
Thermal
conductivity		 10-4 cal/
cm¡¤sec¡¤¡É		 C177 5.9 6 -
Ýï热
Specific heat		 cal/¡É/g D240 0.25 0.28 -
线àõ热ø³胀ͧ数
Coefficient of
linear expansion		 10-5/¡É D696 9.9
(23-66¡É)		 8.3-10.5
(-73~71¡É)		 12
(21-100¡É)
连续ÞÅéÄ温Óø
Continuousservice
temperature		 ¡É - 260 200 260
热变û¡温Óø
Heat distortion
of
temperature		 4.6kgf/
§² -¡É		 D648 121 72 75
18.5kgf/
§² -¡É		 D648 55 50 48
电气àõ质
Electrical		 体积î½ù÷áã
Volume
resistivity		 ¥Ø¡¤§¯ D257 >1018 >1018 >1018
øúØüî½ù÷áã
Surface resistivity		 ¥Ø D257 >1016 >1016 >1016
绝缘÷ò坏Ë­Óø
Dielectric strength		 (1/8inch)
KV/§®		 D149 16-24 20-24 20-24
Ë¿电ßÈ数60Hz
Dielectric constant		 - D150 <2.1 2.1 2.1
Ë¿电ßÈ数 103Hz
Dielectric constant		 - D150 <2.1 2.1 2.1
Ë¿电ßÈ数 106Hz
Dielectric
constant		 - D150 <2.1 2.1 2.1
ûù学àõ质
Chemical		 ұ߫àõ
Acid-proofness		 - D543 Excellent Excellent Excellent
Ò±碱àõ
lkaline-
proofness		 - D543 Excellent Excellent Excellent
Ò±éÁ剂àõ
Resistance to
solvents		 - D543 Excellent Excellent Excellent
Ò±Îùàõ
Durability		 æ×烧àõ
Combustibility		 - D635 Incombusti
bility		 Incombusti
bility		 Incombusti
bility
ýåâ©áã
Water
absorption		 - D570 <0.01 <0.01 0.03
÷åàõ /
Properties		 单êÈ /
Unit		 ETFE CTFE VdF
(PVdF)		 VF
(PVF)
Úª×âàõ质
Physical		 Ýïñì
Speacific gravity		 - 1.7 2.1-2.2 1.75-1.78 1.4
éÂïÃ
Melting point		 ¡É 270 210~212 170 200~210
ÏõÌþàõ质
Mechanical		 ÕÃãßË­Óø
Tensile strength		 kgf/§² 455 300~400 400~520 300~400
ÕÃãßáã
Elongation		 % 200 80-250 100-300 150-200
压缩Ë­Óø
Compressive
strength		 kgf/§² 500 320-520 600 -
ÕÃãß弹àõáã
Modulus of
elasticity in tension		 10©økgf/§² 8.4 11
弯ÍØ弹àõáã
Modulus of
elasticity in bending		 10©økgf/§² 14 17.6 14.0-18.0 -
ÓÕ击Ë­Óø
IZOD Impact strength		 §¸¡¤§¯/§¯ 13.6-14.7 19.6-21.8 -
ÌãÓø
Hardness
 Rock
well		 R50 R75-95 R110-115 -
Duro
meter		 D75 D74-90 D75-80 -
热àõ质
Thermal		 热传导Óø
Thermal
conductivity		 10-4 cal/
cm¡¤sec¡¤¡É		 5.7 4.7-5.3 3 4.9
Ýï热
Specific heat		 cal/¡É/g 0.46-0.47 0.22 0.33 -
线àõ热ø³胀ͧ数
Coefficient of
linear expansion		 10-5/¡É 9-9.3
(20-90¡É)		 4.5-7.0 8.5 3.95
连续ÞÅéÄ温Óø
Continuousservice
temperature		 ¡É 150 180 150 107
热变û¡温Óø
Heat distortion
of
temperature		 4.6kgf/
§² -¡É		 - 115 145 -
18.5kgf/
§² -¡É		 74 76 90 -
电气àõ质
Electrical		 体积î½ù÷áã
Volume
resistivity		 ¥Ø¡¤§¯ >1016 >1016 2.0 X 1014 4 X 1013
øúØüî½ù÷áã
Surface resistivity		 ¥Ø 5x1014 - - -
绝缘÷ò坏Ë­Óø
Dielectric strength		 (1/8inch)
KV/§®		 16 20-24 10.2 -
Ë¿电ßÈ数60Hz
Dielectric constant		 - 2.6 2.24-2.8 8.4 -
Ë¿电ßÈ数 103Hz
Dielectric constant		 - 2.6 2.24-2.7 7.72 7.4
Ë¿电ßÈ数 106Hz
Dielectric
constant		 - 2.6 2.3-2.5 6.43 -
ûù学àõ质
Chemical		 ұ߫àõ
Acid-proofness		 - Excellent Excellent Good Good
Ò±碱àõ
lkaline-
proofness		 - Excellent Excellent Good Good
Ò±éÁ剂àõ
Resistance to
solvents		 - Excellent Excellent ÜôÒ±酮ûä极àõéÁØÚ -
Ò±Îùàõ
Durability		 æ×烧àõ
Combustibility		 - Incombusti
bility		 Incombusti
bility		 Self-
Extinguishing		 Self-
Extinguishing
ýåâ©áã
Water
absorption		 - 0.029 0 0.04 <0.5