Specialty Coating Systems Parylene D Poly (P-Xylylene) Coating

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Specialty Coating Systems Parylene D Poly (P-Xylylene) Coating
Categories:	Polymer; Film; Thermoplastic; Poly (P-Xylylene)
Material Notes:	Parylene D is a polymer of para-xylylene modified by the substitution of chlorine atoms for two of the aromatic hydrogen atoms. Parylene D is similar in properties to Parylene C with the added ability to withstand slightly higher use temperatures. SCS Parylene conformal coatings are ultra-thin, pinhole-free polymer coatings that provide a number of high-value surface treatment properties such as excellent moisture, chemical and dielectric barrier properties, thermal and UV stability, and dry-film lubricity. Parylene coatings are used in a number of applications throughout the medical device, electronics, automotive, military and aerospace industries. Information provided by Specialty Coating Systems (SCS) .
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Physical Properties	Metric	English	Comments

Water Vapor Permeability	0.0900 g mil/ (m² day) @Temperature 37.0 °C	0.00581 g mil/ (100 in² day) @Temperature 98.6 °F	90% RH; ASTM E96
Density	1.418 g/cc	0.05123 lb/in³	ASTM D1505
Water Absorption	<= 0.10 % @Time 86400 sec	<= 0.10 % @Time 24.0 hour	ASTM D570
Oxygen Transmission	12.6 cc-mm/m²-24hr-atm @Temperature 25.0 °C	32.0 cc-mil/100 in²-24hr-atm @Temperature 77.0 °F	ASTM D1434
Nitrogen Transmission	1.80 cc-mm/m²-24hr-atm @Temperature 25.0 °C	4.57 cc-mil/100 in²-24hr-atm @Temperature 77.0 °F	ASTM D1434
Carbon Dioxide Transmission	5.10 cc-mm/m²-24hr-atm @Temperature 25.0 °C	13.0 cc-mil/100 in²-24hr-atm @Temperature 77.0 °F	ASTM D1434

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell R	80	80	ASTM D785
Tensile Strength, Yield	62.1 MPa	9000 psi	ASTM D882
Elongation at Break	<= 200 %	<= 200 %	ASTM D882
Elongation at Yield	3.0 %	3.0 %	ASTM D882
Modulus of Elasticity	2.62 GPa	380 ksi	Secant; ASTM D882
Coefficient of Friction, Dynamic	0.31	0.31	ASTM D1894
Coefficient of Friction, Static	0.33	0.33	ASTM D1894

Electrical Properties	Metric	English	Comments
Volume Resistivity	1.20e+17 ohm-cm	1.20e+17 ohm-cm	50% RH; ASTM D257
Surface Resistance	1.00e+16 ohm	1.00e+16 ohm	50% RH; ASTM D257
Dielectric Constant	2.8 @Frequency 1e+6 Hz	2.8 @Frequency 1e+6 Hz	ASTM D150
	2.82 @Frequency 1000 Hz	2.82 @Frequency 1000 Hz	ASTM D150
	2.84 @Frequency 60 Hz	2.84 @Frequency 60 Hz	ASTM D150
Dielectric Strength	217 kV/mm	5500 kV/in	ASTM D149
Dissipation Factor	0.0020 @Frequency 1e+6 Hz	0.0020 @Frequency 1e+6 Hz	ASTM D150
	0.0030 @Frequency 1000 Hz	0.0030 @Frequency 1000 Hz	ASTM D150
	0.0040 @Frequency 60 Hz	0.0040 @Frequency 60 Hz	ASTM D150

Thermal Properties	Metric	English	Comments
CTE, linear	38.0 µm/m-°C	21.1 µin/in-°F	via TMA
Melting Point	380 °C	716 °F	via DSC
Maximum Service Temperature, Air	100 °C	212 °F	Continuous
	120 °C	248 °F	Short Term
Softening Point	125 °C	257 °F	T5 Point; modulus = 690 MPa (100,000 psi)
	240 °C	464 °F	T4 point; modulus = 70 MPa (10,000 psi)

Optical Properties	Metric	English	Comments
Refractive Index	1.669 @Wavelength 589.3 nm	1.669 @Wavelength 589.3 nm	n_D; Abbe Refractometer
Transmission, Visible	87 % @Wavelength 400 nm	87 % @Wavelength 400 nm
UV Transmittance	<= 1.0 % @Wavelength 290 nm	<= 1.0 % @Wavelength 290 nm	cutoff
	30 % @Wavelength 300 nm	30 % @Wavelength 300 nm
	80 % @Wavelength 350 nm	80 % @Wavelength 350 nm

Descriptive Properties
Hydrogen Transmission	94.5 cc-mm/m²-24hr-atm		ASTM D1434
UV Stability	> 2000 hours		ASTM G154

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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PPARYL91 / 171628

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