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Jiangyin JiHua New Material Co., Ltd.

Engineering plastics                                                                    Polycabonate

Property :

¡ö High mechanical property ¡¢stiffness as well as toughness un-notched impact strength which is among the best of thermoplsctics and present ductile fracture submit .shaped products can reach the high precise allowance and keep the dimension stability in a wide range.

¡öDistortion temperature 135-145 ¡æ and can reach to 150-170 ¡æ with fiber grass reinforced.

¡öGood electrical property ¡¢ corona resistance and keep constant electrical insulation property in a wide range of temperature.

¡öBad fluidity ,it is difficult for pure resin to shape processing .in order to do easily ,you can modify with ABS or PBT to form PC/ABS or PC/PBT .

¡öBe highly sensitive to water ,so must be dry properly before using it and guarantee water less than 0.02% .

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Typical application:

¡öSocket & switch¡¢ clock¡¢ LCD¡¢ coffee stove¡¢food disintegrator¡¢ TV set parts ¡¢jacklight housing ¡¢alarm lamp¡¢ switch teriminal¡¢cable connector¡¢ freeway symbol board ¡¢precision mechanismgear parts ¡¢helmet ¡¢eye shield .

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Use method :

¡öNeed to dry before injection molding , dry at 120¡æ for 5 hours(it would be best at negative pressure ), guarantee water less 0.02%.hopper temperature 100-115 ¡æ and mold temperature 80-90 ¡æ .injection molding condition as follow (only to preference):

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Injection molding conditions as follow (only to preference):

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Item

Unit

PC/ABS

PC/PBT

PC

Cylinder temperature Rear

¡æ

220-235

225-240

270-280

Middle

¡æ

230-240

235-245

280-300

Front

¡æ

235-245

240-250

285-300

Nozzle temperature

¡æ

235-250

240-250

280-295

Resin temperature

¡æ

235-250

240-250

280-295

Mold temperature

¡æ

60-100

60-100

100-120

Injection pressure

kg/cm2

600-1200

600-1200

700-900

Packing pressure

kg/cm2

500-1000

500-1000

500-800

Back pressure

kg/cm2

0-40

0-40

10-20

Screw speed

rpm

40-90

40-90

40-60

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Represented value of modified PC product according to ASTM as follow:

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Property

ASTM

Units

PC/ABS

PC/PBT

PC

4400

4306

4400

4306

4400G10

4306

Density

D792

G/cm3

1.12

1.16

1.24

1.25

1.25

1.22

Tensile strength

D638

MPa

50

58

47

45

70

65

Tensile elongation

D638

%

50

40

100

80

8

80

Flexural modulus

D790

MPa

2100

2200

2000

1900

3500

2200

IZOD impact strength Notched

D256

J/m

500

550

750

700

100

200

Rockwell hardness

D785

R

110

106

130

130

85

90

H.D.T.(0.46MPa)

D648

¡æ

100

90

85

83

140

130

Combustibility

UL-94

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HB

V-0

HB

V-0

HB

V-0

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Characteristics

High impact

Inflaming retarding

High- impact High- gloss

Inflaming retarding

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Reinforce

Inflaming retarding

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Packing & stockpile :

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