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| Parylene HT® 聚对二甲苯 (PPX) | |||
| Polyparaxylylene | |||
| Product Description | |||
| Parylene is the name for members of a unique polymer series. The basic member of the series, Parylene N, is poly(para-Xylylene), a completely linear, highly crystalline material. | |||
| Parylene HT, the newest commercially available Parylene, replaces the alpha hydrogen atoms of the N dimer with fluorine. This variant of Parylene is useful in high temperature applications (short-term up to 450°C) and those in which long-term UV stability is required. Parylene HT also has the lowest coefficient of friction and dielectric constant, and the highest penetrating ability of the four variants. | |||
| General | |||
| Features | Biocompatible | Highly Crystalline | Radiation (Gamma) Resistant |
| Good Chemical Resistance | Linear Polymer Structure | ||
| Uses | Aerospace Applications | Electrical/Electronic Applications | Printed Circuit Boards |
| Automotive Applications | Medical/Healthcare Applications | ||
| Coating Applications | Military Applications | ||
| Agency Ratings | ISO 10993 | MIL I-46058C | USP Class VI |
| RoHS Compliance | RoHS Compliant | ||
| Appearance | Clear/Transparent | Colorless | |
| Physical | Nominal Value | Unit | Test Method |
| Density | 1.32 | g/cm³ | ASTM D1505 |
| Water Absorption (24 hr) | < 0.010 | % | ASTM D570 |
| Hardness | Nominal Value | Unit | Test Method |
| Rockwell Hardness (R-Scale) | 122 | ASTM D785 | |
| Mechanical | Nominal Value | Unit | Test Method |
| Coefficient of Friction | ASTM D1894 | ||
| Dynamic | 0.13 | ||
| Static | 0.15 | ||
| Films | Nominal Value | Unit | Test Method |
| Secant Modulus - MD | 2550 | MPa | ASTM D5026 |
| Tensile Strength - MD | ASTM D882 | ||
| Yield | 34.5 | MPa | |
| Break | 51.7 | MPa | |
| Tensile Elongation - MD | ASTM D882 | ||
| Yield | 2.0 | % | |
| Break | < 200 | % | |
| Oxygen Permeability (25°C) | 24 | cm³·mm/m²/atm/24 hr | ASTM D1434 |
| Water Vapor Transmission Rate (38°C, 100% RH) | 0.22 | g·mm/m²/atm/24 hr | ASTM F1249 |
| Carbon Dioxide Permeability (25°C) | 95 | cm³·mm/m²/atm/24 hr | ASTM D1434 |
| Nitrogen Permeability (25°C) | 4.8 | cm³·mm/m²/atm/24 hr | ASTM D1434 |
| Thermal | Nominal Value | Unit | Test Method |
| Continuous Use Temperature | 350 | °C | |
| Melting Temperature | > 500 | °C | DSC |
| CLTE - Flow (25°C) | 3.6E-5 | cm/cm/°C | TMA |
| Specific Heat (20°C) | 1040 | J/kg/°C | |
| Thermal Conductivity (25°C) | 0.096 | W/m/K | ASTM D1461 |
| Service Temperature - Short-Term | 450 | °C | |
| Electrical | Nominal Value | Unit | Test Method |
| Surface Resistivity 2 | 5.0E+15 | ohms | ASTM D257 |
| Volume Resistivity 3 (23°C) | 2.0E+17 | ohms·cm | ASTM D257 |
| Dielectric Strength | 210 | kV/mm | ASTM D149 |
| Dielectric Constant | ASTM D150 | ||
| 60 Hz | 2.21 | ||
| 1 kHz | 2.20 | ||
| 1 MHz | 2.17 | ||
| Dissipation Factor | ASTM D150 | ||
| 60 Hz | < 2.0E-4 | ||
| 1 kHz | 2.0E-3 | ||
| 1 MHz | 1.0E-3 | ||
| Optical | Nominal Value | Test Method | |
| Refractive Index | 1.559 | ASTM D542 | |
| Notes | |||
| 1These links provide you with access to supplier literature. We work hard to keep them up to date; however you may find the most current literature from the supplier. | |||
| 223°C, 50% RH | |||
| 350% RH |
