Protection of Materials and Structures from Space Environment

This publication presents the proceedings of ICPMSE-6, the sixth international conference on Protection of Materials and Structures from Space Environment, held in Toronto May 1-3, 2002. The ICPMSE series of meetings became an important part of the LEO space community since it was started in 1991. Since then, the meeting has grown steadily, attracting a large number of engineers, researchers, managers, and scientists from industrial companies, scientific institutions and government agencies in Canada, U. S. A. , Asia, and Europe, thus becoming a true international event. This year’s meeting is gaining even stronger importance with the resumption of the ISS and other space projects in LEO, GEO and Deep Space. To reflect on these activities, the topics in the program have been extended to include protection of materials in GEO and Deep Space. The combination of a broad selection of technical and scientific topics addressed by internationally known speakers with the charm of Toronto and the hospitality of the organizers brings participants back year after year. The conference was hosted and organized by Integrity Testing Laboratory Inc. (ITL), and held at the University of Toronto’s Institute for Aerospace Studies (UTIAS). The meeting was sponsored by the Materials and Manufacturing Ontario (MMO) and the CRESTech, two Ontario Centres of Excellence; Air Force Office of Scientific Research (AFOSR/NL); MD Robotics; EMS Technologies; The Integrity Testing Laboratory (ITL); and the UTIAS.

Section A.- A New Era for Canada in Space.- Space and Atmospheric Environments: From Low Earth Orbits to Deep Space.- Materials Interactions with Space Environment: International Space Station - May 2000 to May 2002.- Photoconductivity in Transparent Arcproof Coatings.- Effects of Space Environment Factors on Optical Materials for Space Application.- A Study of Synergistic Radiation Effects of Protons and Electrons on Teflon FEP/Al Degradation.- Dose Rate Effects in Polymer Materials Irradiated in Vacuum.- Towards a Database for Assessment of Near-Earth Space Radiation Effects on Optical Glasses.- The Role of Proton and Electron “Abnormal” Formations in Radiation Impact on Construction Elements of Spacecrafts.- A Study of Methylsilicone Rubber Damage Behavior Induced by Proton Irradiation.- Section B.- A Unified Space Environment Effects Database for Russian and North American Organic and Inorganic Materials.- The Effect of Heating on the Degradation of Ground Laboratory and Space Irradiated Teflon FEP.- On the Thermal Stability of Polyimides for Space Application.- Synergistic Degradation of CV-1144-O Due to Ultraviolet Radiation and Heat.- Behaviour of Thermal Control Coatings Under Atomic Oxygen and Ultraviolet Radiation.- Ground Testing of SCK5 White Silicone Paint for LEO Applications.- Study of Polymer Coatings Resistance After the Longterm Exposure on Space Station “MIR”.- Issues and Consequences of Atomic Oxygen Undercutting of Protected Polymers in Low Eerth Orbit.- Effect of Space Gaseous Environment on the Thermophysical Properties of Materials and Structures.- CLeanliness Support of the Launch Vehicle for Putting into Orbit the Spacecraft Meteor-3M with the “Sage-III” Instrument.- Section C.- Irreversible Shrinkage Effects of Carbon Fibers in Polymer Matrix Composites Exposed to the “MIR” Space Enuironment.- Combined Effect of Thermal and Mechanical Stresses on the Viscoelastic Properties of a Composite Material for Space Structures.- Hyperthermal Reactions of Oxygen Atoms with Saturated Hydrocarbons.- A Review of Lubrication on the Canadarm 2.- Degradation of Polymers by O(3P) in Low Earth Orbit.- Iridium Metal as Potential Substrates for Experiments in Space.- The Influence of the Atomic Oxygen Plasma on the Surface and on the Photoelectric Properties of Solar Arrays.- Some Aspects of Simulation of Outgassing Processes in Thermal Vacuum Exposure of Coatings Applied to Space.- Section D.- Vacuum Ultraviolet Radiation Characterization of RF Air Plasma and Effects on Polymer Films.- Studies of the Surface Oxidation of Silver by Atomic Oxygen.- Determination of the Energy Level of the Atomic Oxygen Flux Generated by the Space Simulation Apparatus Using a Thermal Modeling Method.- Design and Testing of a Mini-spectrometer System for On-Orbit Degradation Studies of Optical Materials.- Kapton as a Standard for Atomic Oxygen Flux Measurement in LEO Ground Simulation Facilities: How Good Is It?.- Temperature and Impingement Angle Dependences of Atomic Oxygen-Induced Erosion of Polyimide and Polyethylene Films Measured by Quartz Crystal Microbalance.- Integrating Sphere Unit for Precision Measurement of Absolute Reflectance and Transmittance of Spacecraft Materials in a Vacuum Chamber.- Numerical Simulation of Thermal Stress Induced by Thermocycling in Hot Rolled 1420 Al-Li Alloy.- Changes in Microstructure and Tensile Properties of Hot Rolled 1420 Al-Li Alloy Subjected to Thermocycling.- Section E.- Photosil™ Surface Modification Treatment of Polymer-based Space Materials and External Space Components.- Atomic Oxygen Resistant, Low Alpha, Anti-static Polyimides for Potential Space Applications.- Deposition and Characteristics of Atomic Oxygen Protective Coatings Using Plasma Polymerized HMDSO.- Development of Protective and Passive Thermal Control Coatings on Carbon-based Composite Materials for Application in Space.- Structure and Composition of Non-Metallic Solar Array Materials Retrieved After Long-Term Exposure Overboard the “MIR” Orbital Space Station.- Micro- and Macrotribological Properties of Solid Lubricants in 5 Electronvolts Atomic Oxygen Exposures.- ZnSe Coatings for Spacecraft Electrochromic Thermal Control Surfaces.- Perfluorocyclobutane (PFCB) Polyaryl Ethers for Space-based Applications.- Section F.- Fast Three-Dimensional Method of Modeling Atomic Oxygen Undercutting of Protected Polymers.- Development and Verification of a Predictive Model and Engineering Software Guide for Durability Evaluation of Polymer-Based Materials in LEO.- Comparative Study of Low Energy C and O Atoms Impact in a Hydrocarbon Surface.- A Direct Trajectory Dynamics Investigation of Fast O+ Alkane Reactions.- Mathematical Simulation Methods to Predict Changes of Integral and Spectral Optical Surface Characteristics of External Spacecraft Materials and Coatings.