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Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
Aerospace parylene coatings july 2012
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Aerospace parylene coatings july 2012

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  • Vielen Dank!!
  • Transcript

    • 1. Parylene Coatings for Enhanced Reliability of Electronics Alan Hardy – Military Market Manager July , 2012
    • 2. Agenda•Parylene •Adhesion Technologies - What is it? •Industries and Applications - Why coat with it? •Conclusion - History - Overview of Specialty Coating Systems - How is it applied? - Properties and benefits 2
    • 3. Why Conformal Coat?• Dielectric strength• Electrically conductive• Antistatic• Thermal insulation• Heat dissipating• Radiation shielding• Moisture, chemical, fluid barrier• Anti-stiction, low friction• Seal or reduce microporosity• Abrasion resistance• Stabilizes components and structures• Biostability and biocompatibility 3
    • 4. Conformal Coating Material Considerations• Freedom from byproducts• Application temperatures• Cure forces• Conformability - uniformity• Control of thickness• Crevice penetration• Regulation/Quality compliance• Biostability/Biocompatibility• Properties of the coating – Barrier capabilities – Environmental stability – Sterilizability and bio-acceptability• Minimization of mechanical loading 4
    • 5. What is Parylene?• A common generic name for a unique series of polymers based on p-Xylylene POLY(PARA-XYLYLENE)• A truly conformal, thin, optically clear, inert coating applied in a vacuum chamber at room temperature• A non-line-of-sight coating that follows molecular level deposition process• A chemically pure coating that does not use any catalysts or leachable materials 5
    • 6. Why Parylene?• Completely conformal • Chemically pure, inert and free• of catalytic, plasticizer and Ultra-thin and lightweight solvent residues• Free from pinholes and defects • No outgassing• Moisture & chemical barrier • No leachable ingredients• High dielectric strength • No cure forces/stresses• Chemical insolubility • Environmentally friendly• Dry film lubricity • No thermal stresses during• Particle immobilization room temperature deposition• Hydrophobicity• Optically clear – colorless• Biocompatible and biostable 6
    • 7. History of Parylene• Dr. WM Gorham at Union Carbide Corporation (UCC) in late 1940’s – Proposed using powdered form of dimer … a laboratory curiosity• Dr. Gorham announced the vapor deposition polymerization (VDP) process – Coating process that bears his name patented in 1967• Nova Tran Corp. purchased license agreement from UCC in 1971 – Made Parylene VDP a commercial success• Union Carbide Corporation purchased Nova Tran Corp. in 1984• Renamed Specialty Coating Systems in 1991 7
    • 8. Specialty Coating Systems SCS is the direct descendant of Union Carbide Corporation – Unbroken transfer of technology and I.P. – Over 40 years of Parylene applications experience SCS manufactures its own dimer, ensuring high quality materials SCS - the global leader in Parylene coating solutions – Parylene variants, coating center locations, process development, coating technologies, equipment design, regulatory support• 11 worldwide coating centers – Americas: Costa Rica and United States (5) – Asia: Japan and Singapore – Europe: Czech Republic, Ireland and United Kingdom 8
    • 9. Parylene VariantsParylene N • High dielectric strength … 7,000 V@ 25 μm • Maximum continuous service temperature … 60°C • Short term (≤24 hrs.) maximum service temperature … 80°C • Coefficient of Friction … 0.25 • Certifications − IPC-CC-830, MIL-I-46058C and listed on the QPL − USP Class VI and ISO-10993 biological evaluations 9
    • 10. Parylene VariantsParylene C • High dielectric strength … 5,600 V@ 25μm • Maximum continuous service temperature … 80°C • Short term (≤24 hrs.) maximum service temperature … 100°C • Excellent chemical resistance • Lowest permeability to moisture and gases • Coefficient of Friction … 0.29 • Certifications − IPC-CC-830, MIL-I-46058C and listed on the QPL − USP Class VI and ISO-10993 biological evaluations 10
    • 11. Parylene VariantsParylene D • High dielectric strength … 5,500 V@ 25μm • Maximum continuous service temperature … 100°C • Short term (≤24 hrs.) maximum service temperature … 120°C • Lowest elongation • Coefficient of Friction … 0.31 11
    • 12. Parylene VariantsParylene HT ® • High dielectric strength … 5,400 V@ 25μm • UV stable • Lowest dielectric constant & dissipation factor • Highest continuous service temperature … 350°C • Short term (≤24 hrs.) maximum service temperature … 450°C • Coefficient of Friction … 0.13 • Certifications − IPC-CC-830, MIL-I-46058C and listed on the QPL − USP Class VI and ISO-10993 biological evaluations Parylene HT is a registered trademark of Specialty Coating Systems, Inc. 12
    • 13. Parylene Characteristics Crevice PenetrationParylene C ≈ 5 times the diameter Acrylics – Spray or brushParylene N ≈ 40 times the diameter Silicones – Spray or brushParylene HT ≈ 50 times the diameter Urethanes – Spray or brushResults may vary depending on a number of factors 13
    • 14. Par ylene Deposition Process 14
    • 15. Parylene Deposition• Film grows one molecule at a time• Coating thickness is controllable - 500 angstroms to 75 microns• Coating thickness is based on dimer quantity and chamber load• Nominal coating rate is ≈ 5 microns/hour 15
    • 16. Parylene Deposition• No cure forces – No thermal reactions – No expansion or contraction• Very high degree of penetration/conformity – Under, inside, edges and sides• No liquid phase – No meniscus, no edge effects – Nothing to leach or outgas Parylene Coating Liquid Coating 16
    • 17. Parylene Characteristics SEMs courtesy of E.E. Hui, UC Berkeley. 17
    • 18. Parylene Properties 18
    • 19. Parylene Electrical Properties Properties Parylene N Parylene C Parylene HT Dieletric Constant 6 GHz 2.46 - 2.54 3.06 - 3.10 2.10 - 2.15Additional Data Dissipation Factor 6 GHz 0.0002 - 0.0010 0.0021 - 0.0028 0.0015 - 0.0020 19
    • 20. Improvement in Wire Lead & Bond Strength Wire-bond strength vs. Parylene C coating thickness on a hybrid-to-chip lead 80 70 60 Parylene C 50 40 30 20 m• A bare 1 mil aluminum wire has a h n u P e a g S s r t ) ( i l 10 typical bond strength of 3 to 5.5 grams 0• With a 1 mil coating of Parylene C over 0 5 10 15 20 25 30 the wire, bond strength increases to Coating Thickness (in microns) between 60 and 70 grams 20
    • 21. Parylene Barrier PropertiesWater Vapor Transmission Gas Permeability at 25°C, (cc•mm)/(m 2 •day•atm) a Polymer N2 O2 CO 2 H2 Parylene N 3 15.4 84.3 212.6 Parylene C 0.4 2.8 3 43.3 Parylene HT 4.8 23.5 95.4 – Epoxy (ER) 1.6 4 3.1 43.3 Polyurethane (UR) 31.5 78.7 1,181 – Silicone (SR) – 19,685 118,110 17,717 21
    • 22. Parylene Barrier Properties Uncoated CoatedCircuit boards after 144-hour salt fog test, in accordance with ASTM B117- (03). 22
    • 23. Parylene Solvent Resistance % Swelling Chemical Tested Parylene N Parylene C Parylene HT10% Nitric Acid, RT 0.1 0.1 0.0 o10% Nitric Acid at 75 C 0.2 0.1 0.070% Nitric Acid, RT 0.2 0.2 0.0 o70% Nitric Acid at 75 C Brittle 1.8 1.210% Sulfuric Acid, RT 0.1 0.3 0.0 o10% Sulfuric Acid at 75 C 0.2 4.1 0.095-98% Sulfuric Acid, RT 0.2 0.4 0.0 o95-98% Sulfuric Acid at 75 C 5.3 5.1 2.8 23
    • 24. Parylene Properties Moisture Resistance Microorganism Resistance 4 7 days 14 days 3 21 days Effectiveness Rating 28 days 2 1 0 Parylene N Parylene C Parylene HT Filter Cotton Duck Test Samples Rating: 0 = None 1= Traces of growth (less than 10%) 2= Light growth (10-30%)Tested in accordance with Mil-STD 202, Method 302, 3= Medium growth (30-60%)test condition B (Temp: 650C, RH: 90-96%) 4= Heavy growth (60% to complete coverage) Test Method: ASTM G-21 24
    • 25. Thermal Characteristics 25
    • 26. UV StabilityParylene films were exposed to radiation from a bank of fluorescent lampsusing the following test parameters:- Device used: QUV - Type of test: Accelerated weathering- Test method: ASTM 154 - Irradiance: 0.77 Watts per square meter- Source: UVA 340 lamp 12 10 Parylene C 8 n e E -x c t ] l Parylene HT 6 -V o p 0 1 e y r , 4 V o n h u a k g c s r t , l i 2 0 e a S c [ : l 0 0 100 250 500 1000 1250 1500 2000 UV exposure time (hrs) 26
    • 27. Prediction of End of Useful Life Arrhenius Plot: Parylene HT vs. Parylene C Log Time to Failure vs. Reciprocal Absolute Temperature (Failure: reduced elongation and tensile strength)10000000 1000000 150oC Parylene 150 o C 135 o C 80 o C 100000 Types 80oC Parylene ~ 40 yrs. ~ 100 yrs. >100 yrs. HT 10000 Parylene C ~ 24 hours ~ 70 hours ~ 10 yrs. 1000mohueTagFLsrt)(li 100 10 1 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3 103/T Ko 27
    • 28. Agenda•Parylene •Adhesion Technologies - What is it? •Industries and Applications - Why coat with it? •Conclusion - History - Overview of Specialty Coating Systems - How is it applied? - Properties and benefits 28
    • 29. Adhesion Considerations• Adhesion effects all types of applications − Aerospace − Automotive − Electronics − Medical − Military• Properties impacted by poor adhesion − Electrical insulation − Chemical resistance − Corrosion protection − Environmental stress protection − Moisture resistance 29
    • 30. Factors Affecting Adhesion• Physical and chemical nature of substrate• Solder masks• Cleanliness of substrate – Manufacturing and human residues – Particle contamination Particle was not removed before Parylene coating and is now “captured” 30
    • 31. Factors Affecting Adhesion• Mode of coating - solution, vapor, plasma• Cure forces• Stresses in the coating• Nature of coating material and coating formulation• Primer and adhesion promotion – Chemical – Plasma – Abrasion 31
    • 32. Adhesion IssuesCorrosion of a PCB Delamination, chipping Blister 32
    • 33. Adhesion Issues No clean flux residue and Corrosion on a PCB Coating adhesion failure leading to delamination and/or corrosion 33
    • 34. Adhesion IssuesFailed assembly with spots of poor adhesion Good assembly with strong adhesion (no spots) 34
    • 35. Latest Developments in Adhesion Promotion Technologies AdPro Plus ®Chemical compound applied to a variety of metallic and plasticsubstrates (e.g., Stainless Steel, Cobalt-Chromium, Copper, Gold,Iridium, Nitinol, Platinum, Solder, Tin, Titanium, Tungsten,Aluminum, Nickel, Chromium, Brass, Polycarbonate, etc.) as a tielayer prior to the application of Parylene coating. AdPro Poly ®Chemical compound applied to a variety of polymeric substrates(e.g., Polyimide, Epoxy, Acrylic, EPDM, etc.) as a tie layer prior tothe application of Parylene coating.AdPro Plus and AdPro Poly are a registered trademarks of Specialty Coating Systems, Inc. 35
    • 36. Adhesion Promotion Technologies Silane A-174 AdPro Plus 4.8 4.8 4.8 4.7 4.8 4.7 4.8 4.8 5 4 3BonP50e=Excrt)(,l 2.2 2 1 M o d h-2 e t , 1 0 0 0 Stainless Steel Stainless Steel Stainless Steel Titanium Alloy Titanium Alloy Titanium AlloyMDA953TS (Mirror like finish (Mirror like finish (Mirror like finish Grade 5 (Mil Grade 5 (Mil Grade 5 (Mil #8), 24 hrs #8), 48 hrs #8), Autoclave Finish), 24 hrs Finish), 50 hrs Finish), Autoclave @50%RH @50%RH 125C-1 hr @50%RH @50%RH 125C-1 hr 36
    • 37. Adhesion Promotion Technologies Silane A-174 AdPro Plus® AdPro Poly® 4.9 4.9 5 4 3.2 3 1.9 B o n P 5 0 e = E x c r t ) ( , l 2 M o d h -2 e t 1 0 0 , 0 24 hrs @50%RH Autoclave 125C-1 hr M D A 9 5 3 T S Polyimide (Kapton) SubstrateDuPont™ and Kapton® are trademarks or registered trademarks of E.I. du Pont de Nemours and Company. 37
    • 38. Adhesion Promotion Technologies • AdPro Plus … solves adhesion challenges for difficult metallic and plastic substrates • AdPro Poly … a new system that solves adhesion challenges for Polyimide substrates • Both enhance the reliability of miniaturized and advanced components in all markets Courtesy of DuPont.DuPont™ and Kapton® are trademarks or registered trademarks of E.I. du Pont de Nemours and Company. 38
    • 39. MIL–I–46058 Specification 2011 QPL Listing 39
    • 40. SCS CertificationAS/EN/JSQ9100:2009 – Rev C 40
    • 41. IntroducingSCS Parylene C-UVF™ SCS Parylene C-UVF is a trademark of Specialty Coating Systems, Inc. 41
    • 42. Industries and Applications 42
    • 43. Automotive Coating Applications  Mass air temperature and pressure sensors  Emission sensors  Tire Pressure Monitoring Systems (TPMS)  Diesel fuel heaters  O-rings, seals and engine gaskets  Fuel cell and hybrid electronic systems  Engine electronics  MEMS sensors 43
    • 44. Medical Device Coating Applications Cardiac assist devices and components − ICDs, pacemakers, VADs Drug delivery devices − Stents, inhalers (MDI, DPI, nasal) Cochlear and intraocular implants Catheters Neurostimulators Gastric balloons and cuffs Endotracheal tubes Laboratory devices Printed circuit boards 44
    • 45. Renewable Energy Coating Applications  Wind power  Solar/photovoltaic  Energy harvesting  Hydropower  Geothermal 45
    • 46. LED Coating Applications• Video displays• Electronic billboards• Marine lighting• Transportation signage• Outdoor illumination• Vehicle lighting• Commercial refrigeration• Aviation lighting 46
    • 47. Electronics Coating Applications • Printed circuit boards • MEMS wafers • Probes / pins • Rotors / stators • Components – Metal – Brackets • Cables • Ferrite cores 47
    • 48. Military/Aerospace Coating ApplicationsMilitary/CommercialMEMSSensorsCircuit card assembliesMotor componentsPower suppliesBackplanesElastomeric partsAerospaceSpacecraft and satellite electronicsCameras and assembliesInternational Space Station remote arm componentsSpace Shuttle and International Space Station lab equipment 48
    • 49. Advanced Parylene Applications Micro Active 100 µm Valve Thermal Flow Sensor Check valve Micro pump Parylene channel Electrolysis pump Reaction chamber orImages courtesy of Dr. Y. C. Tai, Caltech. In-channel check valve reservoir 49
    • 50. ConclusionParylene ultra-thin conformal coatings are being used more than ever toprotect devices and components and enhance the reliability of today’s andtomorrow’s innovative technologies.• Ultra-thin and conformal• Complete encapsulation• No liquid phase• No cure forces• Excellent moisture, chemical and electrical properties• Low coefficient of friction• Exceptional thermal stability• Superior UV stability• Biocompatible and biostable 50
    • 51. Thank you 51

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