PHYSICAL PROPERTIES OF MODIFIED POLYMERS (BY GEORGE DIAD EID) Full
29 thg 3, 2025 | 10:58

PHYSICAL PROPERTIES OF MODIFIED POLYMERS (BY GEORGE DIAD EID) Full



PHYSICAL PROPERTIES OF MODIFIED POLYMERS BY GEORGE DIAD EID

ABSTRACT OF A THESIS SUBMITTED TO THE FACULTY OF THE DEPARTMENT OF PLASTICS ENGINEERING IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE UNIVERSITY OF MASSACHUSETTS LOWELL 2004



CONTENTS:


List of Tables  vii

List of Figures  viii

1.0  Introduction  1

1.1  General  1

1.2  Brief History of Polymers  2

1.2.1  Thermoplastics and Thermosets  3

1.2.2  Polymer Chemistry  4

1.2.3  Types o f Polystyrene Polymers  5

1.3  Polymer Shrinkage  8

1.3.1  Amorphous Polymers  9

1.3.2  Crystalline Polymers  10

1.3.3  Semi-crystalline Polymers  11

1.3.4  Amorphous Polymers vs. Semi-crystalline Polymers  12

1.3.5  Engineering Polymers  13

1.4  Fillers  14

1.4.1  Properties of Filled and Reinforced Plastics  16

1.4.2  Effects o f Fillers  18

1.5  Types o f Shrinkage  24

1.6  Crystallization Shrinkage  27

1.6.1  Injection Molding Shrinkage  32

iv

Reproduced with  permission  of the copyright owner.  Further reproduction  prohibited without permission.

1.6.2  Shrinkage Measurements

1.6.3  Mold Shrinkage

1.7  Coefficient of Thermal Expansion Effect

1.7.1  ASTMD696

1.7.2  ASTME228

1.7.3  Understanding Linear Thermal Expansion

1.7.4  Test Procedure

1.8  Thesis Goals

2.0  Experimental

2.1  Materials

2.2  Processing

2.2.1  S olvent Experiment I

2.2.2  S olvent Experiment II

2.2.3  Capillary Rheometry Experiment

2.2.4  Single Screw Extruder Experiment

2.2.5  Torque Rheometry

2.2.6  Compression Molding Experiment

2.3  Testing/Characterization

2.3.1  X-ray Diffraction (XRD)

2.3.2  Differential Scanning Calorimetry (DSC) and

Thermogravimetric Analyzer (TGA)

2.3.3  Transmission Electron Microscopy (TEM)

2.3.4  Coefficient o f Thermal Expansion (CTE)

Reproduced with  permission  of the copyright owner.  Further reproduction  prohibited without permission.

3.0  Results and Discussion  79

3.1  Solvent Experiment I  79

3.1.1  XRD  79

3.1.2  TEM  83

3.2  Capillary Rheometry  96

3.3  Netzsch CTE Testing Results  on Single  Screw Extrusion

Specimens  98

3.4  Torque Rheometry Results  108

3.5  Netzsch CTE Testing Results  on Compression Molding Specimens 109

4.0  Conclusions  117

5.0  Recommendations  118

6.0  Literature Cited  119

Appendix  123

Appendix I - Solvent Experiment II  123

Appendix II - Capillary Rheometry  127

Appendix III - Single Screw Extruder  128

Appendix IV - Torque Rheometry  130

Appendix V - Compression Molding  132

Biographical Sketch o f Author 










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PHYSICAL PROPERTIES OF MODIFIED POLYMERS BY GEORGE DIAD EID

ABSTRACT OF A THESIS SUBMITTED TO THE FACULTY OF THE DEPARTMENT OF PLASTICS ENGINEERING IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE UNIVERSITY OF MASSACHUSETTS LOWELL 2004



CONTENTS:


List of Tables  vii

List of Figures  viii

1.0  Introduction  1

1.1  General  1

1.2  Brief History of Polymers  2

1.2.1  Thermoplastics and Thermosets  3

1.2.2  Polymer Chemistry  4

1.2.3  Types o f Polystyrene Polymers  5

1.3  Polymer Shrinkage  8

1.3.1  Amorphous Polymers  9

1.3.2  Crystalline Polymers  10

1.3.3  Semi-crystalline Polymers  11

1.3.4  Amorphous Polymers vs. Semi-crystalline Polymers  12

1.3.5  Engineering Polymers  13

1.4  Fillers  14

1.4.1  Properties of Filled and Reinforced Plastics  16

1.4.2  Effects o f Fillers  18

1.5  Types o f Shrinkage  24

1.6  Crystallization Shrinkage  27

1.6.1  Injection Molding Shrinkage  32

iv

Reproduced with  permission  of the copyright owner.  Further reproduction  prohibited without permission.

1.6.2  Shrinkage Measurements

1.6.3  Mold Shrinkage

1.7  Coefficient of Thermal Expansion Effect

1.7.1  ASTMD696

1.7.2  ASTME228

1.7.3  Understanding Linear Thermal Expansion

1.7.4  Test Procedure

1.8  Thesis Goals

2.0  Experimental

2.1  Materials

2.2  Processing

2.2.1  S olvent Experiment I

2.2.2  S olvent Experiment II

2.2.3  Capillary Rheometry Experiment

2.2.4  Single Screw Extruder Experiment

2.2.5  Torque Rheometry

2.2.6  Compression Molding Experiment

2.3  Testing/Characterization

2.3.1  X-ray Diffraction (XRD)

2.3.2  Differential Scanning Calorimetry (DSC) and

Thermogravimetric Analyzer (TGA)

2.3.3  Transmission Electron Microscopy (TEM)

2.3.4  Coefficient o f Thermal Expansion (CTE)

Reproduced with  permission  of the copyright owner.  Further reproduction  prohibited without permission.

3.0  Results and Discussion  79

3.1  Solvent Experiment I  79

3.1.1  XRD  79

3.1.2  TEM  83

3.2  Capillary Rheometry  96

3.3  Netzsch CTE Testing Results  on Single  Screw Extrusion

Specimens  98

3.4  Torque Rheometry Results  108

3.5  Netzsch CTE Testing Results  on Compression Molding Specimens 109

4.0  Conclusions  117

5.0  Recommendations  118

6.0  Literature Cited  119

Appendix  123

Appendix I - Solvent Experiment II  123

Appendix II - Capillary Rheometry  127

Appendix III - Single Screw Extruder  128

Appendix IV - Torque Rheometry  130

Appendix V - Compression Molding  132

Biographical Sketch o f Author 










LINK DOWNLOAD - BẢN PREVIEW


LINK DOWNLOAD - BẢN FULL (TÀI LIỆU VIP MEMBER)

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