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Plastic | Rubber | Film

Æú¸®À̵̹å

Polyimide

¿£Áö´Ï¾î¸µ Çöó½ºÆ½ ¼ÒÀç Áß °¡Àå ³ôÀº ¼öÁØÀÇ ³»¿­¼º°ú ¹°¸®Àû ¼ºÁú(³»¸¶Âû, ³»¸¶¸ð¼º, Àü±â Àý¿¬¼º, ±â°èÀû ¹°¼º, ³»¹æ»ç¼±¼º, ³»È­Çмº µî)ÀÇ ¹°¼ºÀ» °®°í ÀÖ´Â Æú¸®À̵̹å(Polyimide, PI) ¼ºÇüÇ°ÀÔ´Ï´Ù.

´ëÇ¥ Á¦Ç°À¸·Î DuPont»çÀÇ Vespel, Saint-Gobain»çÀÇ Meldin, ¿ìº£»çÀÇ Upimol, Äâµå·±Æ®»çÀÇ Duratron, ±¹»êÀ¸·Î´Â PI÷´Ü¼ÒÀçÀÇ Leomid, ´ë¸²H&LÀÇ Plavis µîÀÌ »ó¿ëÈ­ µÇ¾îÀÖÀ¸¸ç, Á¦Á¶»ç¸¶´Ù ÃÖ°íÀÇ Ç°Áú·Î °ü¸®µÇ´Â Á¦Ç°ÀÔ´Ï´Ù. ¼ö¿¡ÄڽżÒÀç´Â ´Ù¾çÇÑ Æú¸®À̵̹å Á¦Ç°ÀÇ ¹°¼º, °¡°Ý, °ø±Þü°è¿¡ µû¶ó ¼º´É, °¡°Ý, ±¸¸Å ÆíÀǼºÀ» °í·ÁÇØ Á¦Ç°À» ¼±Á¤ÇØ µå¸®¸ç, °¡°ø ¶ÇÇÑ ºü¸£°í, Á¤È®ÇÏ°Ô ÇØ µå¸³´Ï´Ù. Æú¸®À̵̹å´Â °¢ »ý»ê󸶴٠ÁÖÀÇÇØ °ü¸®ÇÏ´Â Ç°¸ñÀ¸·Î ½ÃÇè ¹æ¹ý µîÀÌ »óÀÌÇÏ¿© ¹°¼ºÇ¥³ª Á÷Á¢ºñ±³Ç¥¸¦ °Ô½ÃÇÒ ¼ö ¾øÀ¸³ª, Á÷Á¢ ¹®ÀÇ ¹× »ó´ã ½Ã Á¦°ø °¡´ÉÇÕ´Ï´Ù. ¾Æ·¡ À̹ÌÁö¸¦ ÅëÇØ Æú¸®À̵̹åÀÇ ´Ù¾çÇÑ Ä÷¯¸¦ Âü°íÇϽñ⠹ٶø´Ï´Ù.

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Æú¸®À̵̹å Ư¡

  • ¶Ù¾î³­ ³»¿­¼º(Vespel : ´ë±âÁß 288¡ÆC±îÁö ¿¬¼Ó»ç¿ë, ´Ü½Ã°£ 480¡ÆC)

    Young's modulus (GPa)

    6

    5

    4

    3

    2

    1

    0

    100

    200

    300

    400

    500

    600

    Temperature (K)

  • ±ØÀú¿Â¿¡¼­ »ç¿ë°¡´É
  • ³ôÀº ³»¸¶¸ð¼º(Vespel : ¹«À±È°¿¡¼­ ÇÑ°èPV 10¹è ÀÌ»ó)
  • ³»Å©¸®ÇÁ¼º(Vespel : 260¡ÆC, 186kg/cm2 06%/1000hr)
  • Ä¡¼ö¾ÈÁ¤¼º
  • ÇöóÁ ¹× ¹æ»ç¼±¿¡ ´ëÇÑ ÁÁÀº ³»¼º
  • Áø°ø¿¡¼­ÀÇ ÀÛÀº ¾Æ¿ô°³½Ì : °íÁø°ø 10-10Torr
  • ¶Ù¾î³­ ±â°è°¡°ø¼º
  • Àü±âÀý¿¬¼º : natural type

Æú¸®À̵̹å Á¾·ù ¹× ºÐ·ù

Plavis Vespel Meldin Duratron
Natural :³»¿­,Àý¿¬,°í°­µµ N SP-1 7001 XP
15%G : °íPV ¹× ³»¸¶¸ð¼º G15 SP-21 7021 150
40%G : Àú¿­ÆØâ, G40 SP-22 7022 400
15%G+10%Teflon SP-211 7021

* ÇÔ·®±âÁØÀº ¹«°Ô, G-graphite.

Vespel : Summary of Typical Properties (Machining Stock)

Property Method Temp(¡ÆF) Units SP-1 SP-21 SP-22 SP-211 SP-3
Tensile Strength,
Ultimate
ASTM
D-638
73
500
PSI
PSI
12,500
6,000
9,500
5,500
7,500
3,400
6.500
3,500
8,200
-
Elongation,
Ultimate
ASTM
D-638
73
500
%
%
7.5
7.0
4.5
2.5
3.0
2.5
3.5
3.0
4.0
-
Flexural
Modulus
ASTM
D-790
73
500
103 PSI
103 PSI
450
250
550
370
700
400
450
200
-
-
Compressive
Modulus
ASTM
D-695
73 103 PSI 350 420 475 300 -
Wear Rate,
PV = 25,000
Unlub. in/1000 .25-1.2 .09 .06 .07 .25-.33
Friction Coefficient
   Dynamic*
   Static
   Static in Vacuum

Unlub.

.29
.35
-

.24
.30
-

.20
.27
-

.12
.20
-

.25
-
.03
Coefficient of
Linear Expansion
E-228 73-572 10-5 in/
in/c F
30 27 21 30 -
Dielectric Constant D-150 73 @104 Hz 3.64 13.28 - - -

Underwriters Laboratory Flame Rating: 94-VO

* Steady state, unlubricated in air. PV = 25,000 psi fpm

NOTE: These are typical properties for machined parts. Properties typical of other manufacturing processes may vary. For example the coefficient of linear expansion for direct-formed parts can be 7% to 24% less than the values shwon above, depending on the resin compoosition.

Vespel SP21ÀÇ ºñÀ±È° ¸¶¸ð¼ººñ±³

Vespel¢ç SP-21

Aramid fiber-
filled nylon

Carbon/graphite

Graphite-filled
PTFE

Graphite-
impregnated metal

0

50

100

150

200

250

Maximum PV, psi-ft/min x 103

Typical Electrical Properties of Direct-Formed Parts Made of Vespel¢ç ST

Property/Unit Temp., ¡ÆC ASTM Method ST-2010 SP-21 ST-2030 SP-22
Dielectric strength
   V/mil (kV/mm)
Room D-149 265
(10.4)
140
(5.5)
Dielectric constant
   100 Hz
   10 kHz
   1 MHz
Room D-150
4.80
4.78
4.70

6.55
6.51
6.41

300
110
40.6

12.6
18.7
18.6
Dissipation factor
   100 Hz
   10 kHz
   1 MHz
Room D-150
0.0014
0.0023
0.0075

0.0019
0.0040
0.0070

6.9
0.65
0.30
Volume resistivity
   ohm¡¤cm
Room D-257
3.2 ¡¿ 1016

2.2 ¡¿ 1016

4.8 ¡¿ 107

2.3 ¡¿ 1010
Surface resistivity
   ohm/square
Room D-257
2.0 ¡¿ 1016

4.7 ¡¿ 1012

2.6 ¡¿ 108

1.4 ¡¿ 106
Vespel¢ç SP-1
Unfilled
Meldin¢ç 7001
Unfilled
Vespel¢ç SP-21
15% Graphite
Meldin¢ç 7021
15% Graphite
Specific Gravity ASTM D792 1.43 1.43 1.51 1.51
Water Absorption 24 hr. ASTM D570 0.24% 0.23% 0.19% 0.19%
Mechanical Properties@ 73¡ÆF Hardness, Rockwell E ASTM D785 50 40-55 35 25-40
Tensile Strength, Ultimate ASTM D638 12,500 psi 12,500 psi 9,500 psi 9,500 psi
Elongation at Break ASTM D638 7.5% 8.0% 4.5% 3.2%
Flexural Modulus ASTM D790 450 ksi 460 ksi 550 ksi 530 ksi
Flexural Yield Strength ASTM D790 16,000 psi 15,800 psi 16,000 psi 15,800 psi
Compressive Modulus ASTM D695 350 ksi 380 ksi 420 ksi
Electrical Properties Surface Resistance ASTM D257 5e+015 ohm 1015 - 1016 ohm 4.7e+012 ohm 108 - 10 9 ohm
Dielectric Constant at 1 MHz; ASTM D150 3.55 3.14 6.41
Dielectric Strength ASTM D149 559 kV/m 580 kV/m 250 kV/mil 280 kV/m

ÃÊÀú¿Â ´Ü¿­Àç·Î »ç¿ëµÇ´Â Polyimide foam

ÃÊÀú¿Â ´Ü¿­Àç·Î »ç¿ëµÇ´Â Polyimide foam
ASTM or UL test Property N G15 G40 MS
- Composition / Filler Material Unfilled 15% Graphite 40% Graphite 15% Moly
PHYSICAL
D792 Density (lb/in3)
   (g/cm3)
0.050
1.39
0.052
1.44
0.059
1.62
0.056
1.55
D570 Water Absorption (%) @ 50% RH 0.95 0.90 0.80 0.90
MECHANICAL
D1708 Tensile Strength, Ultimate
   @ 73¡ÆF (psi)
   @ 500¡ÆF (psi)

13,300
7,300

11,400
6,800

10,600
5,900

11,400
-
D638 Tensile Modulus (psi) - - - -
D1708 Tensile Elongation, Ultimate
   @ 73¡ÆF (%)
   @ 500¡ÆF (%)

12.8
8.9

11.2
7.4

9.5
5.7

6.3
-
D790 Flexural Strength, Ultimate
   @ 73¡ÆF (psi)
   @ 500¡ÆF (psi)

18,200
8,500

12,500
7,800

12,400
7,000

12,400
7,400
D790 Flexural Modulus
   @ 73¡ÆF (psi)
   @ 500¡ÆF (psi)

443,000
247,000

397,000
334,000

683,000
400,000

426,000
341,000
D695 Compressive Strength, 1% strain
   @ 73¡ÆF (psi)
   10% strain @ 73¡ÆF (psi)

3,300
24,000

3,400
15,400

4,100
14,300

4,300
15,000
D695 Compressive Modulus (psi) 336,000 410,000 411,000 355,000
D785 Hardness, Rockwell M75-85 M68-78 M66-70 M70-75
D256 IZOD Notched Impact (ft-lb/in) 0.94 0.84 0.67 -
THERMAL
D696 Coefficient of Linear Thermal Expansion (x 10-5 in./in./¡ÆF) 3.1 1.9 1.4 2.2
D648 Heat Deflection Temp (¡ÆF / ¡ÆC) at 264 psi 680 / 360 - - -
- Max Continuous Operating Temp (¡ÆF / ¡ÆC) 465 / 240 465 / 240 465 / 240 480 / 250
C177 Thermal Conductivity
(BTU-in/ft©÷-hr-¡ÆF)
(x 10-4 cal/cm-sec-¡ÆC)

-
-

-
-

-
-

-
-
UL94 Flammability Rating V0 - - -
ELECTRICAL
D149 Dielectric Strength (V/mil) short time, 1/8" thick - - - -
D150 Dielectric Constant at 1 MHz 2.91 - - -
D150 Dissipation Factor at 1 MHz 0.0036 - - -
D257 Volume Resistivity (ohm-m) 1013 - 1014 1012 - 1013 103 - 104 -
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