Abstract Process Economics Program Report 51C POLYMER NANOCOMPOSITES (June 2002)
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1 Abstract Process Economics Program Report 51C POLYMER NANOCOMPOSITES (June 2002) With the rush of interest in all things related to nanotechnology, polymer nanocomposites represent one of the emerging spin-offs of this exciting new technology. The push in nanocomposites is occurring worldwide with a large number of corporations and research institutions studying potential applications. Polymer nanocomposites are polymer either thermoset or thermoplastic reinforced with a small quantity (<10%) of nanometer-size particles. Nanocomposites offer new and improved properties compare to conventional plastics due to the interaction of nanoparticles on a nanometer scale with the polymer phase and the high aspect ratio of the nanoparticles. Because of the new product properties, the growth in polymer nanocomposite demand is expected to be strong with nanocomposites replacing existing conventional composites and higher performance products. In 1987, Toyota Central R&D disclosed a nanocomposite composition consisting of nylon 6 and nanoparticles of organically modified montmorillonite clay. Ube, Unitika, Honeywell and Bayer have introduced nylon-based nanocomposites. Since then, a large number of companies have been developing nanocomposites for commercial applications. In the fall of 2001, GM with Basell launched the first commercial automotive application of nanocomposite thermoplastic olefin. More recently, widespread interest has been generated by carbon nanotubes as reinforcing fibers for composites. Because of its unique geometry, potentially a new generation of lightweight, high-strength composite can be produced. This report will review the technological development in nanoparticles. It will principally focus on nanocomposites produced with nanoparticles of clay where most of the commercialization activities are occurring. Nanoclay and nanocomposite production, product properties, potential applications, current markets and producers will be reported. The process economics for production of nanoclay and nanocomposites will be evaluated. The status of other potential nanofillers, i.e., carbon nanotubes and polyhedral oligomeric silsesquioxanes, will be reviewed. Because this report focuses on the status and future direction of polymer nanocomposites, it will be of particular interest to producers of polyolefins. PEP 02 SLB
2 CONTENTS GLOSSARY... xi 1 INTRODUCTION SUMMARY DRIVING FORCE TO USE POLYMER NANOCOMPOSITES MARKETS FOR POLYMER NANOCOMPOSITES TECHNICAL ASPECTS: POLYMER/CLAY NANOCOMPOSITES Nanoclay Production Polymer/Nanoclay Composite Production Challenges for Polymer/Clay Nanocomposites CARBON NANOTUBES AND POSS STATUS OF POLYMER NANOCOMPOSITES INTRODUCTION PATENT ACTIVITIES POTENTIAL MARKET AND PROJECTED DEMAND NANOPARTICLE SUPPLIERS Nanoclay Nanocor Inc Southern Clay Products Nano-Chemicals Hybrid Plastics Carbon Nanotubes and Fullerenes Applied Sciences Inc Carbon Nanotechnologies Inc. (CNI) Hyperion Catalysis International Materials & Electrochemical Research (MER) Mitsubishi Corporation iii
3 CONTENTS (Continued) Mitsui & Co Rosseter Holding Ltd Showa Denko K.K Prices NANOCOMPOSITE PRODUCERS Basell Bayer AG Dow Chemical Eastman Chemical Exatec General Electric Honeywell RTP Ube Industries Unitika Co Yantai Haili Industry & Commerce of China OTHERS NANO-SIZED LAYERED SILICATE (NANOCLAY) INTRODUCTION REINFORCEMENT FILLERS INTERCALATION VERSUS EXFOLIATION TOYOTA'S CENTRAL R&D NYLON 6-CLAY HYBRID MONTMORILLONITE CLAY CONVERTING CLAY TO NANOCLAY Polymer Grade Montmorillonite Intercalation of Montmorillonite to Form "Nanoclay" Process Economics: Nanoclay Production iv
4 CONTENTS (Continued) Process Description Capital Investment: Nanoclay Production Production Costs: Nanoclay Production EXFOLIATION OF NANOCLAY TO FOM NANOCOMPOSITES POLYMER NANOCOMPOSITE PROPERTIES NYLON / CLAY NANOCOMPOSITES INTRODUCTION NYLON NANOCOMPOSITE PRODUCTION In-situ Polymerization Process Direct Intercalation of the Polymer via Melt Blending Process Description: Melt Blending Capital Investment: Melt Blending Conversion Costs: Melt Blending Production Costs: Melt Blending Comparison of Cost for Conventional Reinforced Nylon 6 and Nanocomposites Comparison of Properties for Conventional Reinforced Nylon 6 and Nanocomposites POLYPROPYLENE / CLAY NANOCOMPOSITES INTRODUCTION POLYPROPYLENE NANOCOMPOSITE PRODUCTION In-situ Polymerization Process Direct Intercalation of the Polymer via Melt Blending Process Description: Melt Blending Capital Investment: Melt Blending Conversion Costs: Melt Blending Production Costs: Melt Blending Comparison of Cost for Conventional Polypropylene Composites and Nanocomposites v
5 CONTENTS (Concluded) Comparison of Properties for Conventional Polypropylene Composites and Nanocomposites OTHER NANOFILLERS INTRODUCTION POLYHEDRAL OLIGOMERIC SILSESQUIOXANES (POSS) Introduction Preparation of POSS Polymer Nanocomposites Containing POSS CARBON NANOTUBES Introduction What are Nanotubes Preparation of Nanotubes Arc-Evaporation Process Laser Ablation Process Gas-Phase Process Properties of Nanotubes and Polymer Nanocomposites APPENDIX A: PATENT SUMMARY TABLES... A-1 APPENDIX B: DESIGN AND COST BASES... B-1 APPENDIX C: PRODUCT INFORMATION... C-1 APPENDIX D: CITED REFERENCES... D-1 APPENDIX E: PATENT REFERENCES BY COMPANY... E-1 APPENDIX F: PROCESS FLOW DIAGRAM... F-1 vi
6 ILLUSTRATIONS 2.1 Properties of Nylon 6 Composites Properties of Polypropylene Composites Nanoclay Patents Issued By Country or Region XRD Patterns of Composite Conceptual Pictures of Conventional Composite and Nanocomposite Montmorillonite Crystal Montmorillonite Layered Structure Montmorillonite Clay Particle Size Distribution Prior to AMCOL's Purification Step Montmorillonite Clay Particle Size Distribution after Centrifuge Amino Dodecanoic Acid Intercalated Clay Southern Clay Cloisite Nanoclay Nanoclay Production Plant... F Effect of Production Capacity on Nanoclay Product Value Effect of Compatibilizing Agent Price and Amount on Nanoclay Product Value Effect of the Nanoclay Loading on Nylon-6 Nanocomposite Molecular Weight Effect of Clay on Tensile Modulus of the Nanocomposites Mechanism of Gas Barrier Improvement in Polymer Nanocomposite Nylon Compounding Line Effect of Nanoclay Price on Nylon Nanocomposite Product Value Effect of Nanoclay Loading on Secant Modulus and Fracture Toughness (K c ) For Nylon 6 Nanocomposites Polypropylene Compounding Line Effect of Nanoclay Price on Polypropylene Nanocomposite Product Value Comparison of Polypropylene Composites Stiffness-Impact (Notched Izod) Properties POSS Monomer "Cage" Structure The Buckyball Armchair Carbon Single-Walled Nanotube vii
7 TABLES 2.1 Capital Investment for a Nanoclay Production Plant Nanoclay Production Cost Breakdown by Section Production Cost Breakdown for Clay Compatibilizing Section Cost of Nylon 6 Composites Cost of Polypropylene Composites Oxygen Barrier Properties of Potential Monolayer Materials Physical Properties of Different Materials Nanoclay Patent Activities: Companies Nanoparticle Suppliers Nanoparticle Prices Nanocomposite Producers Typical Physical Properties of Fillers Properties of Toyota s Nylon 6 Nanocomposite and Conventional Composite Classification of Phyllosilicate Clay Physical Properties of Polymer Grade Montmorillonite Chemical Analysis of Polymer Grade Montmorillonite The Effect of Alkyl Chain Length of the Compatibilization Agent on Intercalation Compatibilizing Agents Nanoclay Production Plant: Design Bases and Assumptions Nanoclay Production Plant: Stream Flow Nanoclay Production Plant: Major Equipment Nanoclay Production Plant: Utilities Summary Nanoclay Production Plant: Total Capital Investment viii
8 TABLES (Continued) 4.13 Nanoclay Production Plant: Capital Investment by Section Nanoclay Production Plant: Production Costs Nanoclay Production Cost Breakdown By Section Production Cost Breakdown for Clay Compatibilizing Section Property Enhancement for Thermoset and Thermoplastic Nanocomposites Properties of Nanoclay and Glass Fibers Nylon Compounding and Extrusion Line Major Equipment Nylon Compounding and Extrusion Line Utilities Summary Nylon Compounding and Extrusion Line Total Capital Investment Nylon Compounding and Extrusion Line Conversion Costs Nylon Compounding and Extrusion Line Production Costs Cost of Nylon 6 Composites by Weight Basis Cost of Nylon 6 Composites by Volume Basis Oxygen Barrier Properties of Potential Monolayer Materials Physical Properties of Nylon 6 Composites Dimensional Stability of Nylon 6 Composites OTR of Nylon 6 Composites Comparison of Properties for Nylon 6 Nanocomposites Prepared by Insitu Polymerization and Melt-Blending Polypropylene Compounding and Extrusion Line Major Equipment Polypropylene Compounding and Extrusion Line Utilities Summary Polypropylene Compounding and Extrusion Line Total Capital Investment ix
9 TABLES (Concluded) 6.4 Polypropylene Compounding and Extrusion Line Conversion Costs Polypropylene Compounding and Extrusion Line Production Costs Cost of Polypropylene Composites by Weight Basis Cost of Polypropylene Composites by Volume Basis Physical Properties of Polypropylene Composites Effect of Polypropylene Molecular Weight on Nanocomposite Properties Comparison of Mechanical Properties for TPO Composites Comparison of Mechanical Properties for Neat and Flame-Retarded Polypropylene Resins Comparison of Composition and Raw Material Cost for FR Conventional Polypropylene and Nanocomposite with UL 94 Rating V Barrier Properties of Blown and Cast Polypropylene Nanocomposite Films Properties of Polypropylene Nanocomposites Prepared with Various POSS Loadings Comparison of Polypropylene Nanocomposites Prepared with Nanoclay and POSS Commercially Available Nanotubes Physical Properties of Different Materials Comparison of Properties for SWNT and Vapor-Grown MWNT Properties of Nanotube Composites A.1 Nanoclay Patent Summary... A-3 A.2 POSS Patent Summary... A-30 A.3 Carbon Nanotubes Patent Summary... A-32 x
10 GLOSSARY Symbol or Term CEC DWNT EVA HDT HRR LOI MAO MA-PP meq/100g MWNT OTR PA PBT PEEK PEI PET PP PPO PPS POSS PUR ROI sg SWNT TEM T g TPO XRD Definition Cation exchange capacity Double-walled nanotubes Ethylene vinyl acetate Heat deflection or distortion temperature Heat release rate Loss on ignition Methyl aluminoxane Maleic anhydride modified polypropylene Milliequivalent of cations per 100 g of clay (a unit for CEC) Multi-walled nanotubes Oxygen transmission rate Polyamide (nylon) Polybutylene terephthalate Polyether ether ketone Polyetherimide Polyethylene terephthalate Polypropylene Polyphenylene oxide Polyphenylene sulfide Polyhedral oligomeric silsesquioxanes Polyurethane Return on investment Specific gravity Single-walled nanotubes Transmission electron microscopy Glass transition temperature Thermoplastic olefin X-ray diffraction xi
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