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CELANEX 7040 GM30

CELANEX廬 PBT

PBT-(GF+MD)30

Characteristics

Regional availability

• North America

• Europe

• Asia Pacific

• South and Central America

• Near East/Africa

• Global

Processing

Injection Moulding

Delivery form

Pellets

Additives

Lubricants

Special characteristics

Low Warpage

Product Text

Celanex 7040 GM30 is a 30% glass/mineral polyester with a good balance of mechanical properties and processability and high rigidity

Product information

Value

Test Norm

Resin Identification

PBT-(GF+MD)30

*** 1043

Part Marking Code

>PBT-(GF+MD)30<

*** 11469

Rheological properties

Value

Unit

Test Norm

Melt volume-flow rate

16

cm魯/10min

*** 1133

Temperature

250

擄C

Load

2.16

kg

Moulding shrinkage range, parallel

0.3 - 0.4

%

*** 294-4, 2577

Moulding shrinkage range, normal

0.7 - 1

%

*** 294-4, 2577

Mechanical properties

Value

Unit

Test Norm

Tensile modulus

10000

MPa

*** 527-1/-2

Tensile stress at break, 5mm/min

120

MPa

*** 527-1/-2

Tensile strain at break, 5mm/min

2.5

%

*** 527-1/-2

Charpy impact strength, 23擄C

45

kJ/m虜

*** 179/1eU

Charpy impact strength, -30擄C

40

kJ/m虜

*** 179/1eU

Charpy notched impact strength, 23擄C

6.5

kJ/m虜

*** 179/1eA

Poisson&錛?9;s ratio

0.34[C]

[C]: Calculated

Thermal properties

Value

Unit

Test Norm

Melting temperature, 10擄C/min

225

擄C

*** 11357-1/-3

Temperature of deflection under load, 1.8 MPa

200

擄C

*** 75-1/-2

Temperature of deflection under load, 0.45 MPa

220

擄C

*** 75-1/-2

Physical/Other properties

Value

Unit

Test Norm

Humidity absorption, 2mm

0.15

%

Sim. to *** 62

Density

1550

kg/m魯

*** 1183

Injection

Value

Unit

Drying Recommended

yes

Drying Temperature

120

擄C

Drying Time, Dehumidified Dryer

4

h

Processing Moisture Content

鈮?.02

%

Melt Temperature Optimum

250

擄C

Min. melt temperature

240

擄C

Max. melt temperature

260

擄C

Screw tangential speed

0.1 - 0.3

m/s

Mold Temperature Optimum

80

擄C

Min. mould temperature

60

擄C

Max. mould temperature

130

擄C

Additional information

Injection molding

Preprocessing

To avoid hydrolytic degradation during processing, CELANEX resins have to be dried to a moisture level equal to or less than 0.02%. Drying should be done in a dehumidifying hopper dryer capable of dewpoints <-30擄F (-34擄C) at 250擄F (121擄C) for minimum 4 hours.

Processing

Rear Temperature 450-480 (230-250) deg F (deg C)
Center Temperature 460-490(235-255) deg F (deg C)
Front Temperature 470-500 (240-260) deg F (deg C)
Nozzle Temperature 480-510 (250-265) deg F (deg C)
Melt Temperature 460-510 (235-265) deg F (deg C)
Mold Temperature 150-200(65-93) deg F (deg C)
Back Pressure 0-50 psi
Screw Speed Medium
Injection Speed Fast

Injection speed, injection pressure and holding pressure have to be optimized to the individual article geometry. To avoid material degradation during processing low back pressure and minimum screw speed have to be used. Overheating of the material has to be avoided, in particular for flame retardant grades. Up to 25% clean and dry regrind may be used.

Processing Notes

Pre-Drying

To avoid hydrolytic degradation during processing, CELANEX resins have to be dried to a moisture level equal to or less than 0.02%. Drying should be done in a dehumidifying hopper dryer capable of dewpoints <-40擄F (-40擄C) at 250擄F (121擄C) for 4 hours.

Storage

For subsequent storage of the material in the dryer until processed (<= 60 h) it is necessary to lower the temperature to 100擄 C.

Diagrams