pcasa 041112b

Cheil Industries Inc.

StaroyWeather Resistant

PC/ASA Alloy

Staroy Weather Resistant PC/ASA Alloy

Application Development CenterCheil Industries Inc. 22


Introduction to staroy PC/ASA

What is PC/ASA ?What is PC/ASA ?

PC/ASAWeather ResistanceWeather Resistance

Heat ResistanceHeat ResistanceHigh ImpactHigh ImpactHigh FlowHigh Flow

PolycarbonatePolycarbonate

High ImpactHigh ImpactHigh HeatHigh HeatResistanceResistance

Low FlowLow FlowWeatherWeather

ResistanceResistance

ASAASA

High FlowHigh FlowWeatherWeather


Low ImpactLow ImpactLow HeatLow Heat




Excellent Weather Resistance

Enhanced Physical Properties at Weldlines

High Impact Strength at Low Temperature

Good Falling Dart Impact Resistance

Excellent Fluidity in Injection

Well-balance Physical Properties

Low Gloss (WR-7250, WR-7250H)

Features of staroy PC/ASA

PC/ASA should have…PC/ASA should have…



Internal viewSample mounting deviceLocated on the left side

External view

Weather Resistance

Weather-O-MeterWeather-O-Meter



☞ Test Method : SAE J 1960 (after 1,000hr exposure)

☞ The staroy PC/ASA WR-7000 shows excellent weather resistance

compared with general PC/ABS.

Weather Resistance

Excellent Weather ResistanceExcellent Weather Resistance

0

1

2

Degree ofDiscoloration

WR-7000Black

Grade G1Black

PC/ABSBlack

Weather Resistance of PC/ASA



The staroy PC/ASA WR-7000 shows enhanced properties at weldline (neatline) compared with competitor’s PC/ASA grades.

Impact at Weldline

5,000

5,500

6,000

6,500

7,000

WR-7000Black

Grade G1Black

Grade G2Black

TS at Weldline (psi)

0.0

0.5

1.0

1.5

2.0

WR-7000Black

Grade G1Black

Grade G2Black

Izod Impact at Weldline (ft-lbf/in)

Enhanced Properties at Weldlines

Impact and Tensile StrengthImpact and Tensile Strength

TS at Weldline



The staroy PC/ASA WR-7000 shows better impact resistance at low temperature conditions than competitor’s ASA grades.

Low Temp. Impact (ft-lbf/in)

0.0

1.0

2.0

3.0

4.0

-50 -40 -30 -20 -10 0

Temp. (deg.C)

WR-7000 BlackGrade G1 BlackGrade G2 Black

Low Temperature Impact Strength

High Impact Strength at Low Temp.High Impact Strength at Low Temp.



fallingdart

specimen

Specimen and conditionsSpecimen and conditions

Size: 100 mm X 100 mm X 3.2 mm Weight of dart: 11.3 kg Height of falling dart: 1.4 m Test temperature: Room Temp.

Size: 100 mm X 100 mm X 3.2 mm Weight of dart: 11.3 kg Height of falling dart: 1.4 m Test temperature: Room Temp.

Test apparatusTest apparatus

Falling Dart Impact Test

What is FDI test ?What is FDI test ?



FDI is almost the same test method as multiaxial test. The staroy PC/ASA WR-7000 shows very ductile properties.

Falling Dart Impact Test

High FDI StrengthHigh FDI Strength

0

20

40

60

WR-7000Black

Grade G1Black

ASA

Falling Dart Impact (J)



The staroy PC/ASA WR-7000 shows lower viscosity than competitor’s PC/ASA grade in the injection molding range.

Viscosity with Shear Rate at 230 deg.C

0

500

1000

1500

2000

0 500 1000 1500 2000

Shear Rate (1/sec)

Vis

cosi

ty (

Pa-

s)

Grade G1Grade G2WR-7000

Rheological Property

Viscosity with Shear RateViscosity with Shear Rate



The staroy PC/ASA WR-7000 shows enhanced physical property balance.

Physical Properties Balance of WR-7000

0

100Izod (0.125")

MI (250'C/10kg)HDT(264psi)

WR-7000Grade G1Grade G2

Physical Properties

Well-balance Physical PropertiesWell-balance Physical Properties



210 ~ 230 OC

240 ~250 OC

230 ~ 250 OC

Cylinder Temp. :Cylinder Temp. : Screw Rotating Speed : 4Screw Rotating Speed : 40 ~ 80rpm

Nozzle Temp. : 240 Nozzle Temp. : 240 ~ 250 OC

30 ~ 80rpm

Back Pressure : 10~20 kgf/cm2Back Pressure : 10~20 kgf/cm2

Drying:80~100 Drying:80~100 OOC, 2~4hrsC, 2~4hrsPressure : 700~1500 kgf/cm2Pressure : 700~1500 kgf/cm2

Processing Guide

Processing Conditions (Metric Unit)Processing Conditions (Metric Unit)



410 ~ 446 ℉℉

464 ~482 ℉℉

446 ~ 482 ℉℉

Cylinder Temp. :Cylinder Temp. : Screw Rotating Speed : 4Screw Rotating Speed : 40 ~ 80rpm

Nozzle Temp. : 464 Nozzle Temp. : 464 ~ 482 ℉℉

30 ~ 80rpm

Back Pressure : 142 ~ 284 psiBack Pressure : 142 ~ 284 psi

Drying:176~212 , 2~4hrs℉Drying:176~212 , 2~4hrs℉Pressure : 9,900~21,300 psiPressure : 9,900~21,300 psi

Processing Guide

Processing Conditions (American Unit)Processing Conditions (American Unit)



Test Items Test Conditions Staroy PC/ASA WR-7000

American Unit Metric Unit

Tensile Strength ASTM D 638 7,800 psi 550 kg/cm2

Flexural Strength ASTM D 790 12,000 psi 860 kg/cm2

Flexural Modulus ASTM D 790 326,000 psi 23,000 kg/cm2

Rockwell Hardness ASTM D 785 R 113 R 113

Izod Impact (0.125”) ASTM D 256 9.2 ft-lbf/in 50 kg-cm/cm

Izod Impact at -30’C ASTM D 256 1.9 ft-lfb/in 10 kg-cm/cm

HDT (264 psi) ASTM D 648 206 deg.F 97 deg.C

VST (B/50) ISO R 306 234 deg.F 112 deg.C

MI (250’C/10kg) ASTM D 1238 30 g/10min 30 g/10min

Gloss, 60 degrees ASTM D 523 90 90

Sp. Gravity ASTM D 792 1.13 1.13

Properties of WR-7000

Weather Resistant PC/ASAWeather Resistant PC/ASA



Test Items Test Conditions Staroy PC/ASA WR-7250













Properties of WR-7250

Low Gloss PC/ASALow Gloss PC/ASA



Test Items Test Conditions Staroy PC/ASA WR-7250H













Properties of WR-7250H

High Heat Low Gloss PC/ASAHigh Heat Low Gloss PC/ASA

pcasa 041112b

Documents

psi astm d

f astm d

g10min astm d

ftlbfin astm d

ftlfbin astm d

thestaroy pcasa wr

izod impact

degrees staroy pcasa