Advances In Plastics: Recycling of Polyurethanes, Volume I

by Frisch; Kurt C.

• ISBN13: 9781566767378
• ISBN10: 1566767377
• Format: Paperback
• Copyright: 1999-05-19
• Publisher: CRC Press

Summary

Recycling of Polyurethanes, the first volume in the Advances in Plastics Recycling series, is focused on the physical and chemical recycling of polyurethanes, with attention given to energy conversion. A compilation of the present ongoing studies on recycling of urethane and, in general, isocyanate-based polymers, the focus is on thermosetting urethane polymers.

Table of Contents

Introduction	ix
Present State of Polyurethane Recycling in Europe	1	(32)
E. Weigand
W. Raßhofer
Introduction	1	(2)
Terminology and Methods for Recycling and Recovery	3	(7)
Status of PUR Recycling in Western Europe (1995)	10	(21)
Conclusions	31	(1)
Acknowledgements	31	(1)
References	31	(2)
Processing Overview of Bonded Polyurethane Foam	33	(10)
Trent A. Shidaker
Brian Fogg
Introduction	33	(1)
Recycled Foam Industry	34	(1)
Bonded Foam Manufacturing Method	35	(4)
Bonded Foam Physical Property Considerations	39	(1)
Industry Trends	40	(1)
References	40	(3)
Mechanical Recycling of Polyurethane Scrap	43	(78)
Fyodor Shutov
Introduction	43	(2)
Methods of Size Reduction of PUR Scrap	45	(17)
Recycled PUR Parts Produced by Rebonding with Binder	62	(12)
Recycled PUR Parts Produced by Compression Molding without Binder	74	(8)
Recycled PUR Parts Produced by Filling with Pulverized PUR Scrap	82	(29)
Economics and Marketing	111	(4)
References	115	(6)
Ecostream™: A Technology Beyond Recycling	121	(46)
Paul Farkas
Introduction	121	(1)
Background Information	121	(2)
``Prior Art''	123	(7)
Ecostream™: A New Concept	130	(2)
About the Experimental Materials, Techniques and Chemical Systems	132	(4)
Producing Automotive Seat Cushions via Ecostream™	136	(27)
Ecostream™---Going Beyond Recycling	163	(1)
1997 and Beyond	163	(1)
Acknowledgment	164	(1)
References	164	(3)
Recycling of Flexible Polyurethane Foam	167	(56)
Herman Stone
Introduction	167	(1)
History of the Industry	167	(2)
Historic Approaches to Recycling	169	(3)
Current Approaches to Scrap Foam Utilization	172	(1)
Rebond---Current Status	173	(3)
Finely Ground Foam as Filler in Prime Foam	176	(2)
Current Status of Technology for Recycling of Finely Ground Flexible Polyurethane Foam	178	(1)
Comminuting Processes	178	(1)
Cryogenic Grinding	179	(2)
Mechanical Grinding	181	(2)
Other Processes	183	(1)
Properties of Powdered Foam	183	(2)
Problems of Non-Polyurethane Impurities	185	(1)
Economic Considerations	185	(1)
Powder Dispersion Processes	185	(1)
Preparation of Slurry in Polyol	186	(1)
Specific Gravity	187	(1)
Viscosity	187	(3)
Settling	190	(1)
In-Process Blending of Powder into Polyol	190	(2)
Foam Processing	192	(3)
Physical Properties	195	(16)
Summary of Physical Properties	211	(1)
Summary of Full Scale Performance	212	(1)
Physical Properties	212	(1)
Other Properties	213	(1)
Antibacterial Performance	213	(2)
General Conclusions	215	(1)
Economics	215	(4)
Conclusions	219	(1)
Future Developments	219	(1)
References	220	(3)
General Purpose Adhesives Prepared from Chemically Recycled Waste Rigid Polyurethane Foams	223	(18)
F. Hayashi
M. Omoto
M. Ozeki
Y. Imai
Introduction	223	(1)
Decomposition of Rigid Polyurethane Foams	224	(1)
Preparation of Epoxy Adhesives	225	(1)
Measurements	225	(2)
Results and Discussion	227	(9)
Application of Recycled Products from Polyurethane Foam for Curing of Epoxy Adhesive Systems	236	(4)
Conclusions	240	(1)
References	240	(1)
Utilization of Isocyanate-Based Binders in Recycling of Scrap Automotive Headliners	241
Vahid Sendijarevic
Qavi Anjum
Daniel Klempner
Kurt C. Frisch
Girma M. Gebreselassie
Harold Wolf
Introduction	241	(2)
Isocyanate-Based Binders	243	(2)
Rear-Seat-to-Back-Window Trim Panel Prototypes	245	(4)
Conclusions	249	(1)
Acknowledgments	249	(1)
References	249