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Acetal(POM)


Acetal(¾Æ¼¼Æ®¾Ëµ¥ÀÌÃ÷µð¿¡Ä¥·»)= POM( Poly-Oxy-Methylene)Àº µ¿ÀÏ Çöó½ºÆ½À» ÀǹÌÇϸç, °­ÇÏ°í ´Ü´ÜÇÏ¸ç °¡°ø¼ºÀÌ ÁÁÀ¸¸ç ³·Àº ¸¶Âû°è¼ö¿Í ³»¸¶¸ð¼ºÀ» °¡Á® ±â¾î µîÀ¸·Î ¸¹ÀÌ »ç¿ëµÇ¸ç, Á¾·ù·Î´Â homo-polymer¿Í co-polymer·Î ³ª´²Áö´Âµ¥ ½ÃÁß¿¡¼­ ÈçÈ÷ »ç¿ëÇÏ´Â °ÍÀº POM-C·Î º¸¸é µÈ´Ù.

 

Ư¼º POM C /H

 ³õÀº °­µµ

 ¼öÄ¡¾ÈÁ¤¼º

 ¸Å¿ì ³·Àº ¼öºÐÈí¼öÀ²

 ÁÁÀº ³»¸¶¸ð ¸¶Âû¼º(³·Àº ¸¶Âû°è¼ö)

 ±¤¹üÀ§ÇÑ ³»È­Çмº

 ¶Ù¾î³­ °¡°ø¼º(Bur ¹ß»ýÀÌ ¸Å¿ì Àû´Ù)

 ÁÁÀº Àü±âÀý¿¬¼º

 ½Ç¿Üȯ°æ ¹× °í¿¡³ÊÁö ¹æ»ç¼±»ç¿ë À¯ÀÇ

 -60~95¡É


¿ëµµ : ±â¾îÈÙ, °íÇÏÁß º£¾î¸µ°¡À̵å, ¿þ¾î ½ºÆ®¸³, Àü±âºÎÇ°, ÆßÇÁÇÏ¿ì¡, ÀÓÆç·¯ º£¾î¸µ,

º§ºê(¾Á)

 

POM C / H ºñ±³ ( Acetal)

Acetal Copolymer

Acetal Homopolymer(DELRIN)

³»È­ÇмºÀÌ ´õ ÁÁÀ½

¿¬¼Ó »ç¿ë¿Âµµ 100µµ¾¾

À¶Á¡ 165µµ¾¾

ºñÁß 1.43

³»°¡¼öºÐÇؼºÀÌ ´õ ÁÁÀ½

°­¾ËÄ«¸®¿¡ ´õ ³ôÀº ³»¼º

¹°¸®Àû Ư¼ºÀÌ Á¶±Ý ´õ ÁÁÀ½

¿¬¼Ó »ç¿ë¿Âµµ 90µµ¾¾

À¶Á¡ 175µµ¾¾

ºñÁß 1.43

±â°èÀû°­µµ, °æµµ µîÀÌ Á¶±Ý ´õ ÁÁÀ½

³»¸¶¸ð¼ºÀÌ ´õ ÁÁÀ½

DELRIN Color

  -Copolymer(unfilled) : Èò»ö, °ËÁ¤, ȸ»ö, û»ö, ³ì»ö, Ȳ»ö, °¥»ö, Àû»ö µî

  -Homopolymer(unfiled) : °ËÁ¤, Èò»ö

  -DELRIN AF(Derin H+PTFE) : °¥»ö

ASTM or UL test

Property

Acetal
Copolymer

Delrin ®
Homopolymer

Delrin ® AF
PTFE-filled

PHYSICAL

D792

Density (lb/in©ø)
(g/cm©ø)

0.051
1.41

0.051
1.41

0.054
1.50

D570

Water Absorption, 24 hrs (%)

0.2

0.2

0.2

MECHANICAL

D638

Tensile Strength (psi)

9,500

11,000

8,000

D638

Tensile Modulus (psi)

400,000

450,000

435,000

D638

Tensile Elongation at Break (%)

30

30

15

D790

Flexural Strength (psi)

12,000

13,000

12,000

D790

Flexural Modulus (psi)

400,000

450,000

435,000

D695

Compressive Strength (psi)

15,000

16,000

16,000

D695

Compressive Modulus (psi)

400,000

450,000

350,000

D785

Hardness, Rockwell

M88 / R120

M89 / R122

M85 / R115

D256

IZOD Impact Notched (ft-lb/in)

1.0

1.0

0.7

THERMAL

D696

Coefficient of Linear Thermal Expansion
(x 10
-5 in./in./¡ÆF)

5.40

4.70

5.00

D648

Heat Deflection Temp (¡ÆF / ¡ÆC)
at 264 psi


220 / 104


250 / 121


244 / 118

D3418

Melting Point Temp (¡ÆF / ¡ÆC)

335 / 168

347 / 175

347 / 175

-

Max Operating Temp (¡ÆF / ¡ÆC)

180 / 82

180 / 82

180 / 82

C177

Thermal Conductivity
(BTU-in/ft©÷-hr-¡ÆF)
(x 10
-4 cal/cm-sec-¡ÆC)


1.6
5.5


2.5
8.6


-

UL94

Flammability Rating

HB

HB

HB

ELECTRICAL

D149

Dielectric Strength (V/mil) short time, 1/8" thick

420

450

400

D150

Dielectric Constant at 1 MHz

3.8

3.7

3.1

D150

Dissipation Factor at 1 MHz

0.005

0.005

0.010

D257

Volume Resistivity (ohm-cm) at 50% RH

1015

1015

3.0 x 1016

  DELRIN is a registered trademark of DuPont



 

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