hdpe props.xlsx

7/27/2019 hdpe props.xlsx

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Melt Flow ASTM D1238 (gm/10 min)

5 to 18 gm /10 min http://www.maropolymeronline.com/Properties/HDPE%

Melting Temperature degrees C

Tm Crystalline

130 to 137 C

Glass Transition (C)

Tg (Amorphous)

--- C

Processing Temperature Range Degrees F

Extrusion

350 to 500 F for injection molding

350 to 525 F for extrusion

Molding Pressure Range ( PSI) (ksi)

12 000 to 15 000 psi

12 to 15 ksi

Compression Ratio

2

Mold(Linear) Shrinkage (in/in)

ASTM D955

0.015 to 0.040

Tensile Strength at BreakASTM D638

3200 to 4500 psi

Elongation at break (%)

ASTM D638

10 to 1200 %

Tensile Yield Strength (psi)

ASTM D638

3800 to 4800 psi

Compressive Strength (psi)

Rupture or Yield

ASTM D695

2700 to 3600 psi

Flexural Strength (psi)

Rupture or Yield

ASTM D790


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66 psi ---

175 to 196 F

Thermal Conductivity

(10 x exp 4)al cm/sec cm2 C

ASTM C177

11 to 12 (10 x exp 4) cal cm/sec cm20.0011 to 0.0012 cal cm/sec cm2

Specific Gravity

ASTM D792

0.952 to 0.965

To go to Density /Specific Gravity Values,

click on

Density

Water Absorption

(1/8 in thick specimen) (%)

ASTM D570

24 hr --- less than 0.01%

Saturation --- %

Dielectric Strength v/mil

(1/8 in thick Specimen; short time)

450 to 500 v/mil
http://www.maropolymeronline.com/Properties/density_values.asphttp://www.maropolymeronline.com/Properties/density_values.asp


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20Prop.asp#Tensile%20Strength%20at%20Break


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Properties

The mass density of High-density Polyethylene can range from 0.93 to 0.97 g/cm.[2] Although the dens

liner

http://www.climaxindia.com/hdpe-films-sheets-geomembrane-liners-technical.html

SPECIFICATION FOR HDPE LINER / GEOMEMBRANE

(Both Side Smooth)

Sr.

No.Property

Test

MethodUnit

Nominal Values

0.75 mm 1.0 MM 1.5MM 2.0

1.

Thickness

(min. avg.)

LowestIndividual

value

ASTM D-

5199 MM0.75

0.681.0

0.901.50

1.35 1.

2.Melt Flow

Index

ASTM D-

1238

(Cond. E)

g/10min < 1.0 < 1.0 < 1.0 0.94 > 0.94 > 0.94>

4. Tensile

properties

(Each

Direction)

Strength at

yield

Strength at

break

Elongation at

yield

Elongation at

break

ASTM D-

638

Type IV

Specimen

at

50mm/min

N/mm

N/mm

%

%

11

20

12

700

15

27

12

700

22

40

12

700

5.Tear

Resistance

ASTM D-

1004N 93 125 187 2

6.Puncture

Resistance

ASTMD-

4833N 240 320 480 6

7.

Carbon

Black

Content

ASTM D-

1603% 2-3 2-3 2-3

8.

Carbon

Black

Dispersion

ASTM D-

3015/5596Satisfactory Satisfactory Satisfactory Satisfactory Satis


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9. Dimensional

Stability

ASTM D-

1204

%. 2 2 2

10. Oxidation

Induction

Time

ASTM D-

3895

Min. >100 >100 >100 >


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ity of HDPE is only marginally higher than that of Low-density_polyethylene, HDPE has little branching,

MM

.0

.80

1.0

0.94

29

53

12

00

49

40

-3

factory


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2

100


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iving it stronger intermolecular forces and tensile strength than LDPE. The difference in strength excee


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s the difference in density, giving HDPE a higher specific strength.[3] It is also harder and more opaque


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and can withstand somewhat higher temperatures (120 C/ 248 F for short periods, 110 C /230 F con


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inuously). High-density polyethylene, unlike polypropylene, cannot withstand normally-required autocl


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aving conditions. The lack of branching is ensured by an appropriate choice of catalyst ( e.g. , Ziegler-Nat


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ta catalysts) and reaction conditions. HDPE contains the chemical elements carbon and hydrogen.


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Tensile Strength: 0.20 - 0.40 N/mm2

Notched Impact Strength: no break

Thermal Coefficient of Expansion: 100 - 220 x 10-6

Max. Continued Use Temperature: 65 oC (149 oF)

Melting Point: 126 oC (259 oF)

Density: 0.941 - 0.965 g/cm3

http://www.plasticmoulding.ca/polymers/polyethyle


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hdpe props.xlsx