Polymer Handbook-Brandrup

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Physical Constants of Various Polyamides:

Poly[imino(I -oxohexamethylene)],(Polyamide 6)

Poly(iminoadipoyl-iminohexamethylene),

(Polyamide 66)

Poly(iminohexamethylene-iminosebacoyl),

(Polyamide 610)Poly[imino(I -oxododecamethylene)],

(Polyamide 2 ”

Rakesh H. MehtaE.I. DuPont de Nemours Co., DuPont Nylon, Chattanooga, Tennessee, USA

Property Polyamide 6 Polyamide 66 Polyamide 610 Polyamide 12 Ref.

A b r a s i o n See Wear Resistance 1 3

Absorption)

Water, moldings 20-90°C saturationEthanol, moldings 20°C saturationButanol, moldings 20°C saturation

Glycol, moldings 2o”C, saturationMethanol, moldings 2o”C, saturation

Propanol, moldings 20°C saturation

Adhes ive Bond Streng th , tensile (MPa) = (N/mm’)

PA-aluminiumPA-steelPA-copper

Birefringence, (A .)

n IInl

9.5f

0.5 8.5 It 0.5 3.3 * 0.3 1.6ztO.29-17 9-12 8-13 95-9 4-8 8-12 -

6-13 2-10 2- 4 -

12-16 9-14 1 6 8S

9-13 9-12 1 0 -

1.580 1.582

1.530 1.519

687 076

393939

5 1

5 155

This table includes data compiled by R. Pfltiger for the third edition of Polymer Handbook.

v / 1 2 1


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v / 1 2 2 PHYSICAL CONSTANTS OF VARIOUS POLYAMIDES

Br i t t leness Temperature, ASTM D746 (“C) 57-5

PA-6 PA-66 PA-610 PA-12

DAM SO RH DAM SO RH DAM 50 RH DAM 5O RH

- 8 0 65 [M, = 18000] 90 62

100 8 5 [M”= 340001

Bu l k Modu lus B(N/mm

*)

4400 3300 2300 4000(Crystalline rods, dry)

C h e m i c a l R e s i s t a n c e o f N y l o n s a t 2 3 ” C

Acetic acid (10%) 3O 3

Acetaldehyde (40%) 2 2

Acetone (100%) 1 1

Butanol (100%) 1 I

Carbon tetrachloride (100%) 1 1

Diesel oil (100%) 1

Ethanol (96%) 1 1

Formic acid (3%) :d 3(10%) 4

Gasoline unleaded (100%) 1 1

Heptane (100%) 1 1

Hydrogen peroxide (2%) 4 4Dichloromethane (100%) 2 2

Perchloroethylene (100%) 1 1

Phenol (75%) 3 3

Potassium hydroxide (10%) 1 1

Sulfuric acid (10%) 4 4

Toluene (100%) 1 1

Transformer oil (100%) 1 1

’ Considerable absorption and/or attack; limited product life.

’ Limited resistance, absorption causing dimensional changes and slight reduction in properties.

Resistant, little or no absorption.’ Material is soluble or decomposes in short time.

57,5

2b

1 ’

1

1

2

1

1

1

1

1

23

2

3

1

2

1

1

Coeff icient of Fr ict ion (dry)

(a) Average depth of roughness R in (pm) *0 . 1 0.35

0.5 0.33

1 . 0 0.32

2.0 0.32

4.0 0.36

6.0 0.43

(b) Average surface pressure in (MPa) = (N/mm’)

Optimal

1.5-3pm

0.02 0.40

0.05 0.36

0 . 1 0.35

0.15 0.38

0.2

0.3

0.4

0.5

0.6

0.7

0.8

1 . 0 0.43

1 . 2

5.0 0.48

1 5 . 0 0.48

R, ~0.3 urn Stick-slip-motion

‘Average surface pressure 0.1 MPa; surface temperature


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Shear Strength, ASTM D732 (MPa)

Physical Constants of Various Polyamides V /129

57-59

DAM

PA-6 PA-66 PA-610 PA-12

SO RH DAM 5O RH DAM 5O RH DAM 5O RH

9

6 6 5 7 5 8 3 4

Shrinkage See Mold Shrinkage

P a r am e t e r (J/cm 3, ‘I2

Amorphous, 25°C 27.8 27.8

So/vents See table “Solvents-Nonsolvents” in this Handbook So ni c Vel oc ity , 20°C (m /s) 1400-2300 (fibers)(26) 2770 (mouldings) (40)

26 5 1

Specif icHeat

(J/g-K) 1.7 1.7 1.7 1.26 57,59

Effect of temperature (“C)

04080

120

160200220

240260

280

1.38 1.30 1.381.67 1.55 1.761.97 1.97 2.13

2.30 2.30 2.22

2.68 2.68 2.47- 2.72 2.89- 2.76 8.16- 3.35 3.10 11.51 2.64 3.14 2.68

58,59

Specif ic Volume, at varying pressures (MPa) and temperatures (cm3/g)At 25°C

A t m 0.87550 0.865

100 0.860

200 0.850At 100°C

A t m 0.895

50 0.885

1 0 0 0.875

200 0.860At 200°C

A t m 0.945

50 0.925

100 0.910

200 0.890At 300°C

A t m 1.055

50 1.020100 0.995

200 0.960

6 1

0.880 1.005 0.9850.875 0.985 0.9750.865 0.970 0.960

0.855 0.950 0.945

0.905 1.045 1.0200.890 1.020 1 oOO

0.880 1.000 0.9850.865 0.970 0.960

0.950 1.125 1.1300.935 1.085 1.0950.920 1.060 1.070

0.895 1.020 1.030

1.050

1.0200.9950.955

1.2101.150

1.1101.060

1.210

1.1501.110

1.070

Surface Tension, critical @N/m)23°C 40-47; 43

Melt, 265°C 36

Taber Abrasion, D1044 (mg loss/1OOO cycles); CS-17 wheel, 1OOOg load

5

40; 44

36 37

3 1 38,5 1

2 5 22

7 [M, = 18000]4 [M” = 340001

5- 657.59

-

Temperature Index/Thermal Endu rance Prof i le : Typica l Values (“C)

Not stabilized

5000h 8 520000 h 70

Heat stabilized

5000 13020000 120

57,59

85

70

130120

100

References page V- 132


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R e f e r e n c e s v/133

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(9110) 9.91.

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Nylon”, Monsanto Company, 1994,MPP-5-

210.

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