Porous Materials: Processing and Applications 多孔材料：製備·套用·表征

《PorousMaterialsProcessingandApplications多孔材料製備·套用·表征》是2014年清華大學出版社出版的圖書，作者是[中]P.S.Liu[中]G.F.Chen。

基本介紹

• 書名：Porous Materials: Processing and Applications 多孔材料：製備·套用·表征
• 作者：[中]P. S. Liu [中] G. F. Chen
• ISBN：9787302383642
• 定價：198元
• 出版社：清華大學出版社
• 出版時間：2014-11-15

圖書簡介

多孔材料具有優秀的物理和力學性能，特別是在功能結構一體化方面展示出優異的綜合性能。本書系統介紹了此類材料的概念、製備、套用和表征等基本知識以及近年來的相關研究進展。全書共分10章：在第1章對多孔材料作了整體性的概述，第2章至第8章依次論述了多孔金屬、多孔陶瓷、泡沫塑膠三大類多孔材料的各種製備方法和不同用途，第9章和第10章分別介紹多孔材料的幾個基本參量的表征，包括孔隙因素和基本物理性能。本書可供材料領域的科研人員、工程技術人員參考，也可作為高等院校材料類和相關專業（如物理、化學、生物、醫學、機械、冶金、建築等專業）的教材。

PREFACE

Porous materials are a class of functional-structural materials with the opti- mal index of physical and mechanical properties, thanks to their porous structure. This book systematically introduces the basic concept behind these materials, as well as their major types, characteristics, applications, and main parameters. In addition, it presents various methods that can be used to process porous metals, porous ceramics, and polymer foams (foamed plastics) in accordance with their respective categories.

The concept of porous materials has been known for a number of years, but its radiation is far less successful than that of other materials. By the end of the 20th century, studies on porous materials have made a number of impor- tant discoveries. Based on this background, we spent a good deal of time and energy on collecting relevant literatures, combining with our own accumu- lated work experience, to write the Chinese version of the book, Introduction to Porous Materials, published in 2004 by Tsinghua University Press. This book focuses on production methods and applications of porous materials, considering that a classic work about porous materials, Cellular Solids: Struc- ture and Properties,” by L. J. Gibson and M. F. Ashby, has made a great contribution to expounding the structure and properties of porous solids. This is aimed at providing more information to scientific researchers and engineering or technical personnel who interact with porous materials (including the present authors themselves, of course). The formation and the publication of Introduction to Porous Materials were quite hasty at that time, with some immature viewpoints. In addition, at that time, there were only a few researchers in China studying porous materials. However, the results of our previous effort (including its reception) far exceeded our expectations, and that development further encouraged our future work. In turn, the publication of this book may play a part in promoting the devel- opment in China of the porous material field, as well as research in relevant or potential relevant fields. Because we have seen that research into porous materials has been growing rapidly in recent years in China, and the number of the scientific research institutes, universities, and companies involved in this area also have increased rapidly.

In order not to let down the readers, the publisher and the author jointly determined to revise the original book for a second edition, published in Chinese, to better meet the needs of the wider readership. In the second edition published in 2012, we corrected some errors and inappropriate con-tent that appeared in the first edition, and we added relevant new content reflecting the research progress made over the previous decade. In addition, we readjusted the layout of the book to give it a scientific and reasonable arrangement; in particular, we devoted a lot of time to revising chapters 2, 3, and 4.

Learning of Elsevier’s interest in the topic of this book and considering the international demand for it, we comprehensively rewrote and rearranged the book again for a third edition. In so doing, we expanded on the relevant contents with an emphasis on supplementing the information about the processing, applications, and characterization of porous materials.

In the process of writing this book, we referred to the relevant papers and works published in the last 40 years, and especially those from the last 20 years, and made good use of them. Here, we would like to express our heartfelt thanks to all the authors of these documents. However, we should note that due to space and time limitations, we had to leave out a good many worthy books, papers, and articles, and we regret this deeply. Certainly, we also should acknowledge the assistance of many of our col-leagues in the field of porous materials, and our friends that have helped and supported us greatly. In the process of writing and publishing this book,

P. Liu provided excellent assistance, and C. Y. Yang and Y. J. Guo worked hard to collate the references and draw the figures for this book. The com-bined effort of all these fine people have allowed this project to reach a suc-cessful conclusion.

P.S. Liu, G.F. Chen October 2013

CONTENTS

About the Author ix Preface

1. General Introduction to Porous Materials 1

1.1 Elementary Concepts for Porous Materials 1

1.2 Main Groups of Porous Materials 2

1.3 Porous Metals 6

1.3.1 Powder-sintering type 6

1.3.2 Fiber-sintering type 8

1.3.3 Melt-casting type 8

1.3.4 Metal-deposition type 9

1.3.5 Directional-solidification type 10

1.3.6 Composite type 10

1.4 Porous Ceramics 11

1.4.1 Classifying porous ceramics 12

1.4.2 Characteristics of porous ceramics 14

1.5 Polymer Foams 15

1.5.1 Classifying polymer foams 15

1.5.2 Characteristics of polymer foams 17

1.6 Conclusions 19 References 19

2. Making Porous Metals 21

2.1 Powder Metallurgy 21

2.1.1 Preparation of metal powders 22

2.1.2 Molding of the porous body 28

2.1.3 Sintering of the porous body 34

2.2 Fiber Sintering 50

2.2.1 Preparation of metal fibers 51

2.2.2 Preparation of porous bodies 53

2.2.3 Electrode plate with porous metal fibers 55

2.3 Metallic Melt Foaming 57

2.3.1 Preparation of porous bodies 57

2.3.2 Technical problems and solutions 58

2.3.3 Case studies on porous aluminum preparation 60

2.4 Gas Injection into the Metallic Melt 61

2.5 Infiltration Casting 65

2.6 Metal Deposition 69

2.6.1 Vapor deposition 69

2.6.2 Electrodeposition 73

2.6.3 Reaction deposition 83

2.7 Hollow Ball Sintering 83

2.7.1 Preparation of hollow balls 84

2.7.2 Preparation of porous bodies 85

2.7.3 Fe-Cr alloy porous products 86

2.8 Preparation of the Directional Porous Metal 86

2.8.1 Solid-gas eutectic solidification 86

2.8.2 Directional solidification 89

2.9 Other Methods 92

2.9.1 Powder melting foaming 92

2.9.2 Investment casting 95

2.9.3 Self-propagating, high-temperature synthesis (SHS) 96

2.10 Preparation of Porous Metal Composites 99

2.11 Special Processing of Porous Metals 104

2.12 Concluding Remarks 107 References 108

3. Application of Porous Metals 113

3.1 Introduction 113

3.1.1 Functional applications 113

3.1.2 Structural applications 114

3.2 Filtation and Separation 115

3.2.1 Industrial filtration 116

3.2.2 Gas purification 116

3.3 Sound Absorption 120

3.3.1 Sound absorption mechanism of metal foams 121

3.3.2 Influence factor of sound absorption 123

3.3.3 Metal foam with improved sound absorption 126

3.3.4 Applications 128

3.3.5 The model for calculation of sound absorption coefficient 130

3.4 Heat Exchange 133

3.4.1 Heat exchanger 134

3.4.2 Heat radiator 135

3.4.3 Heat tube 136

3.4.4 Resistance heater 137

3.4.5 Composite phase transformation materials 139

3.4.6 Cooling materials 141

3.5 Porous Electrode 141

3.5.1 Nickel foam 143

3.5.2 Pb foam 143

3.5.3 Fuel cell 145

3.6 Application in Transportation 146

3.6.1 Light structure 147

3.6.2 Absorption of impact energy 148

3.6.3 Noise control 148

3.6.4 Other options 149

3.7 Applications in Biology and Iatrology 151

3.7.1 Applicability of materials 151

3.7.2 Mechanical requirements 153

3.7.3 Ti foam 154

3.7.4 Ta and stainless steel foams 157

3.7.5 Gradient structure and composite 159

3.7.6 Mechanism of bone formation 160

3.8 Other Applications 162

3.8.1 Energy absorption and vibration control 162

3.8.2 Electromagnetic shielding 166

3.8.3 Fighting flames 167

3.8.4 Mechanical parts 168

3.8.5 Building materials 171

3.8.6 Catalytic reactions 172

3.9 Some Application Illustrations for Refractory Metal Porous Products 176

3.9.1 W foam 176

3.9.2 Ta foam 178

3.9.3 Mo foam 179

3.10 Concluding Remarks 181 References 182

4. Special Porous Metals 189

4.1 Amorphous Metal Foams (AMFs) 189

4.2 Gradient Porous Metals 193

4.3 Porous Metallic Lattice Materials 198

4.4 Nanoporous Metal Foams (NMFs) 203

4.5 Porous Metallic Films and Thin Films Carried on Metal Foams 215

4.5.1 Porous metallic films 215

4.5.2 Thin films carried on metal foam 216

4.6 Conclusions 218 References 219

5. Fabricating Porous Ceramics 221

5.1 Particle Stacking Sintering 222

5.2 Appending Pore-forming Agent 223

5.2.1 Addition of pore-forming material in powders 223

5.2.2 Slurry with pore-forming agent 228

5.3 Polymeric Sponge Impregnation Process 233

5.3.1 The selection of organic foam and the pretreatment 234

5.3.2 Ceramic slurry preparation and impregnating 234

5.3.3 Drying and sintering of green bodies 238

5.3.4 Progress of organic foam impregnating in slurry 239

5.3.5 The obtainment of the ceramic foam with high strength 241

5.4 Foaming Process 244

5.4.1 Green body foaming 244

5.4.2 Slurry foaming 246

5.4.3 Evaluation of the processing 253

5.5 Sol-gel Method 255

5.5.1 Different templates 255

5.5.2 Example of preparation of porous ceramics 256

5.6 New Processing of Porous Ceramics 258

5.6.1 Gel casting 258

5.6.2 Wood ceramics 262

5.6.3 Freeze-drying method 264

5.6.4 Self-propagating high-temperature synthesis (SHS) 265

5.6.5 Hollow-sphere sintering 266

5.6.6 Other processes 268

5.7 The Preparation of New Types of Porous Ceramic 270

5.7.1 Hydrophobic porous ceramics 270

5.7.2 Ceramic foam with gradient pores 271

5.7.3 Fiber-porous ceramics 274

5.7.4 Slender porous ceramic tubes 275

5.7.5 Porous ceramics with directionally arrayed pores 277

5.7.6 Porous ceramic powder 277

5.8 Preparation of Porous Ceramic Membranes 278

5.8.1 Sol-gel 279

5.8.2 Other methods 280

5.8.3 Preparation examples for porous ceramic membranes 281

5.8.4 A porous TiO2 film with submicropores 283

5.9 Porous Ceramic Composites 292

5.10 Ceramic Honeycombs 295

5.11 Concluding Remarks 296 References 296

6. Applications of Porous Ceramics 303

6.1 Filtration and Separation 303

6.1.1 Filtration of molten metals 304

6.1.2 Hot gas filtration 310

6.1.3 Microfiltration 311

6.1.4 Fluid separation 312

6.1.5 Parameters of separation and filtration 315

6.2 Functional Materials 316

6.2.1 Biological materials 316

6.2.2 Ecomaterials (Environmental materials) 319

6.2.3 Heat insulation and exchange 321

6.2.4 Sound absorption and damping 322

6.2.5 Sensors (sensing elements) 330

6.3 Chemical Engineering 331

6.3.1 Catalyst carriers 331

6.3.2 Porous electrodes and membranes 333

6.3.3 Ion exchange and desiccants 337

6.3.4 Gas introduction 337

6.4 Combustion and Fire Retardance 338

6.4.1 Combustor 338

6.4.2 Flame arrester 339

6.5 Overall Comments on the Application of Porous Ceramics 339

6.6 Concluding Remarks 341 References 342

7. Producing Polymer Foams 345

7.1 The Foaming Mechanism of Plastic Foam 345

7.1.1 Raw materials 345

7.1.2 Foaming methods 352

7.1.3 Formation of bubble nuclei 354

7.1.4 Growth of bubbles 355

7.1.5 Stabilization and solidification of the foamed body 357

7.1.6 The foaming of some plastics 360

7.2 Molding Process for Polymer Foams 361

7.2.1 Extrusion foaming 361

7.2.2 Injection molding 362

7.2.3 Pour foaming 363

7.2.4 Mold pressing 364

7.2.5 Reaction injection molding (RIM) 364

7.2.6 Rotation foaming 366

7.2.7 Hollow blowing 366

7.2.8 Microwave sintering 367

7.3 Flame-Retardant Polymer Foam 367

7.3.1 Anti-flaming 368

7.3.2 Common flame-retarding plastic foams 369

7.4 Progress of Plastic Foam Preparation 371

7.4.1 Modification of traditional foamed plastics 372

7.4.2 Microcellular plastics 373

7.4.3 Sound-absorbing plastic foams 374

7.4.4 Biodegradable foamed plastics 374

7.4.5 Reinforced foamed plastic 375

7.4.6 Posttreatment of foamed plastics 375

7.4.7 Plant oil-based plastic foams 376

7.4.8 PU plastic foam 377

7.5 Concluding Remarks 378 References 379

8. Applications of Polymer Foams 383

8.1 Thermal Insulation Materials 383

8.1.1 Factors affecting thermal insulation performance 384

8.1.2 Thermal insulation and energy saving construction 384

8.2 Packaging Materials 385

8.3 Sound-Absorbing Materials 387

8.3.1 Product features 387

8.3.2 Sound absorption principles and mechanisms 388

8.3.3 PU foam 389

8.4 Separation and Enrichment 389

8.4.1 Working principles 390

8.4.2 Modification application 391

8.4.3 Enrichment of organic poisonous matters 393

8.5 Other Applications 393

8.5.1 Dust arrestment 393

8.5.2 Structural materials 394

8.5.3 Fireproofing technology and active explosion suppression 395

8.5.4 Buoyancy 396

8.6 Applications of Typical Kinds of Polymer Foam 396

8.6.1 Thermosetting polymer foams 397

8.6.2 Thermoplastic general polymer foams 399

8.6.3 Engineering thermoplastic foams 401

8.6.4 High-temperature-resistant polymer foams (using temperatures higher than 200°C) 402

8.6.5 Functional polymer foams 402

8.6.6 Other polymer foams 403

8.7 New, Functional Polymer Foams 404

8.7.1 Microcellular plastics 404

8.7.2 Magnetic polymer foams 405

8.7.3 Porous, self-lubricating plastics 406

8.8 Overall Application Review of Polymer Foams 407

8.9 Conclusions 407 References 408

9. Characterization Methods: Basic Factors 411

9.1 Porosity 411

9.1.1 Basic mathematical relationship 412

9.1.2 Microscopic analysis 412

9.1.3 Mass-volume direct calculation 413

9.1.4 Soaking medium 414

9.1.5 Vacuum dipping 416

9.1.6 Floating 417

9.2 Pore Size 419

9.2.1 Microscopic analysis 420

9.2.2 Bubble method 420

9.2.3 Penetrant method 432

9.2.4 Gas permeation 433

9.2.5 Liquid-liquid method 437

9.2.6 Gas adsorption 442

9.3 Pore Morphology 447

9.3.1 Microobservation method 447

9.3.2 X-Ray tomography 448

9.3.3 Potential examination by DC of pore defects 460

9.3.4 Other methods 463

9.4 Specific Surface Area 464

9.4.1 Gas adsorption method (BET method) 464

9.4.2 Fluid penetrant method 473

9.5 Mercury Intrusion Method 475

9.5.1 Principle of mercury intrusion 476

9.5.2 Measurement of pore size and distribution 477

9.5.3 Measurement of specific surface area 479

9.5.4 Measurement of apparent density and porosity 480

9.5.5 Experimental instrument for mercury intrusion 483

9.5.6 Measurement error analysis and treatment 483

9.5.7 Scope of application 487

9.5.8 Comparison of the different methods 488

9.6 Concluding Remarks 489 References 490

10. Characterization Methods: Physical Properties 493

10.1 Sound Absorption Coefficient 493

10.1.1 Characterization of sound absorbability 494

10.1.2 Measurement of the sound absorption coefficient 495

10.1.3 Analysis and discussion 505

10.2 Thermal Conductivity 507

10.2.1 Characterization of thermal conductivity and diffusivity 507

10.2.2 Measurement of thermal conductivity 509

10.2.3 Measurement of thermal conductivity for porous materials 514

10.2.4 Evaluation of performance 521

10.3 Electrical resistivity/Electrical Conductivity 523

10.3.1 Four-probe method 523

10.3.2 Double bridge method 524

10.3.3 Potentiometer method 528

10.3.4 Eddy method 529

10.4 Concluding Remarks 531 References 532

Index 533