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PC-300™ Polycarbonate Data

Static Dissipative Plastic

Description

PC-300 Polycarbonate is a plastic sheet product designed to control static electricity for a wide range of end uses. It is a premium quality polycarbonate sheet which has been surfaced with SciCron Technologies proprietary, clear, C-300™ static dissipative surfacing. This unique technology prevents charge generation on the sheet surfaces, thereby controlling particulate attraction and preventing electrostatic discharge (ESD) events. This performance is permanent and totally independent of humidity. PC-300 Polycarbonate offers exceptional design versatility since it fabricates simply, is light in weight and is available in large sheet sizes. It also exhibits superior impact resistance and flame spread properties, plus excellent clarity, chemical resistance, and mar resistance.

Applications

PC-300 Polycarbonate resists tribocharging under all circumstances and cannot generate a charge when properly grounded. This makes it ideal for use in manufacturing and assembly operations for charge sensitive electronic components where it can help prevent both immediate and latent ESD caused defects. Since it resists charge build-up it does not attract contaminants, so it can also help prevent contamination-related rejects in ultra-clean manufacturing operations. Consequently, it is suitable for use in the semi-conductor, electronic, and micro-manufacturing industries. Typical applications include; guards, covers, windows, doors, and access panels for electronic equipment, assembly machines and instruments; conveyor line covers; transparent room partitions; process equipment enclosures; and mini-environment glazing panels. The product also has many general industrial uses, including protection for static charge sensitive manufacturing devices and control of spark discharge in explosive environments.

Fabrication

PC-300 Polycarbonate is easily fabricated into flat surface configurations using the same equipment and fabrication techniques generally employed with unsurfaced polycar-bonate sheet products. It should not be used for heat formed bent configurations since the hard, cured C-300 surface is not designed for heat bending. When solvent welding, it is necessary to remove the C-300 surface mechanically to achieve a good bond. For more information on fabrication refer to SciCron Technologies Technical Information Bulletin No. SP-01.

Features and Benefits

l Cannot be tribocharged when properly grounded

Prevents build-up of static charge and accumulation of harmful contamination.

l Electrostatic decay in less than 0.05 second per Federal Test Standard 101C, Method 4046.1

Results in rapid static dissipation without arcing.

l Surface resistivity of 106 - 108 ohms per square

Provides for ESD control without the need for ionization.

l Permanence in static dissipation performance

Avoids cost of application of temporary topical anti-stats.

l Humidity independent static charge control

Avoids inconvenience of maintaining high levels of humidity and damage caused by such humidity.

l Advanced technology, uniform surface treatment

Avoids conductive discontinuities (charged “hot spots”) often found with non-uniform temporary topical anti-stats.

l Superior impact resistance

Provides exceptional shatter resistance for safety.

l Superior flame spread properties

Provides additional protection for equipment in a fire.

l Hard, mar resistant, durable surface

C-300 surface, harder than the base plastic, reduces risk of damage to the sheet surfaces.

l Superior chemical resistance

Reduces risk of solvent or chemical surface damage.

l Excellent clarity

Premium optical quality polycarbonate with clear C-300 surface minimizes visible distortion.

Availability

PC-300 Polycarbonate is available in clear and transparent gray and bronze tints. Other colors are available by special order.

Standard Dimensions (Nominal)

Thickness: 3mm (1/8”), 4.5mm (3/16”), 6mm (1/4”), 9mm (3/8”), 12mm (1/2”) plus films 10-90 mils

Standard Sheet Size: 48” x 96”

Other sizes and thicknesses available upon request.

Typical Physical Properties (Typical but not guaranteed values for 0.25 inch material)

Property

   

 

Test Method

 

Units

PC-300 Polycarbonate

Physical

Specific Gravity

Pencil Hardness

   

 

ASTM D792

ASTM D3363

--

Hardness Scale

1.20

B

Mechanical

Tensile Strength

Ultimate

Elongation

Tensile Modulus

Flexural Strength

Flexural Modulus

Compressive Strength

Izod Impact Strength (milled notch)

   

 

ASTM D638

ASTM D638

ASTM D638

ASTM D790

ASTM D790

ASTM D695

ASTM D256

 

psi

%

psi

psi

psi

psi

ft-lb/inch of notch

 

9,500

100

340,000

13,500

340,000

12,500

16

Thermal

Deflection Temperature (264 psi load)

Vicat Softening Point

Maximum Continuous Service Temperature

Coefficient of Thermal Expansion

Coefficient of Thermal Conductivity

   

ASTM D648

ASTM D1525

--

ASTM D696

Cenco-Fitch

 

°F

°F

°F

in/in/°F

BTU·in/hr·ft2·°F

 

270

310

180

3.8 x 10-5

1.35

Flammability

Horizontal Burn (Flame Spread)

UL 94 Rating

   

ASTM D635

UL 94

 

in/min

UL Classification

 

Less than 1.0

V-2 0.118 - 0.236 in

V-0 > 0.236 in

Optical

3mm Transparent Clear Transmittance - Total

Haze

   

 

ASTM D1003

ASTM D1003

 

%

%

 

75

Less than 3.0

Electrical

Surface Resistivity

Surface Resistance

Electrostatic Decay

   

 

ASTM D257

EOS/ESD S11.11

FTS 101C,

Method 4046.1*

 

ohms/sq

ohms

sec

 

106 - 108

105 - 107

Less than 0.05

* Federal Test Standard 101C, Method 4046.1 as described in EIA-541, Appendix F, Measurement of Electrostatic Decay Properties of Dissipative Planar Materials

 

 

Chemical Resistance ASTM D543

Samples immersed in the specified chemicals for 24 hours at room temperature and visually examined.

Chemical

Surface Attack

Visual Evaluation

Deionized Water

None

Clear

30% Sodium Hydroxide

None

Cloudy

30% Sulfuric Acid

None

Clear

30% Nitric Acid

Some Pitting

Clear

48% Hydrofluoric Acid

Pitted Coating

Clear

Methanol

Slight Pitting

Clear

Ethanol

None

Clear

Isopropyl Alcohol

None

Clear

Acetone

Severe Pitting

Opaque

Methylene Chloride

Sample

Dissolved

Sample Dissolved

Light Transmission Spectral Analysis

 

 

 

Precautions:

1. Polycarbonate plastic is a combustible thermoplastic. Avoid exposure to flame and excessive heat. Observe fire precautions appropriate for comparable forms of wood and paper.

2. For building applications, comply with applicable code regulations.

3. Clean with soap and water. Do not use abrasives. Avoid inappropriate contact with solvents. PC-300-7 2/04