The effects on tensile, shear, and adhesive mechanical properties when recycled epoxy/fiberglass

311 Pages·2017·6.59 MB·English

by  Dru Matthew Wilson

Iowa State University Capstones, Theses and
Retrospective Theses and Dissertations
Dissertations
1998
The effects on tensile, shear, and adhesive
mechanical properties when recycled epoxy/
fiberglass is used as an alternative for glass
microballoons in fiberglass foam core sandwiches
Dru Matthew Wilson
Iowa State University
Follow this and additional works at:https://lib.dr.iastate.edu/rtd
Part of thePolymer and Organic Materials Commons, and thePolymer Science Commons
Recommended Citation
Wilson, Dru Matthew, "The effects on tensile, shear, and adhesive mechanical properties when recycled epoxy/fiberglass is used as an
alternative for glass microballoons in fiberglass foam core sandwiches " (1998).Retrospective Theses and Dissertations. 12538.
https://lib.dr.iastate.edu/rtd/12538
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The effects on tensile, shear, and adhesive mechanical properties
when recycled epoxy/fiberglass is used as an alternative for
glass microballoons in fiberglass foam core sandwiches
by
Dru Matthew Wilson
A dissertation submitted to the graduate faculty
in partial fulfillment of the requirements for the degree of
DOCTOR OF PHILOSOPHY
Major; Industrial Education and Technology
Major Professor: Roger A. Smith
Iowa State University
Ames, Iowa
1998
UMI Number: 9911656
UMI Microform 9911656
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Graduate College
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This is to certify that the Doctoral dissertation of
Dru Matthew Wilson
has met the dissertation requirements of low^ State University
Signature was redacted for privacy.
Major Professor
Signature was redacted for privacy.
For the Major Program
Signature was redacted for privacy.
Foi^he Graduate College
Ill
TABLE OF CONTENTS
LIST OF HGURES vi
LIST OF TABLES ix
ABSTRACT xi
CHAPTER 1. INTRODUCTION 1
Background of the Study 1
Composite Sandwiches 1
Recycling of Polymer Reinforced Composites 4
Problem of the Study 6
Purpose of the Study 7
Ne^ for the Study 7
Hypotheses of the Study 9
Assumptions of the Study 12
Limitations of the Study 12
Procedure of the Study 13
Definitions of Terms 13
CHAPTER 2. REVIEW OF LITERATURE 16
Envirorunentai Issues 16
Recycling 17
Plastic Materials 17
Composite Materials 18
Composite Material Theory 24
Composite Foam Sandwich Panels 26
Foam Characteristics 27
Filler Percentage Ratios and Particle Size Characteristics 28
CHAPTER 3. METHODOLOGY 32
Population of the Study 32
Sample of the Study 32
Preparation of Sample Sandwich Test Panels 33
Epoxy Resin 33
Slurry 34
Recycled Epoxy/Fiberglass Powder 35
Fabrication of the Samples for the Flatwise Tensile Strength Test 35
Fabrication of the Samples for the Shear Strength Test 37
Fabrication of the Samples for the Peel (Adhesive) Strength Test 39
Variables of the Study 41
IV
Independent Variables 42
Dependent Variables 42
Data Collection Methods 43
Instrumentation 44
Flatwise Tensile Strength Test 44
Shear Strength Test 45
Peel (Adhesion) Strength Test 45
Data Input 46
Statistical Analysis of Data 48
CHAPTER 4. FINDINGS 49
Flatwise Tensile Test 49
Results of ANOVA for Strength of Flatwise Tensile Test 49
Filler Type 53
Foam Density 54
Filler Percentage Ratio 56
Main Effect Interactions 59
Results of ANOVA for the Weight of Flatwise Tensile Test Sandwiches 64
Filler Type 66
Foam Density 71
Filler Percentage Ratio 73
Main Effect Interactions 74
Shear Test 81
Results of ANOVA for Strength of Shear Test 81
Filler Type 84
Foam Density 87
Filler Percentage Ratio 89
Main Effect Interactions 90
Results of ANOVA for the Weight of Shear Test Sandwiches 95
Filler Type 99
Foam Density 102
Filler Percentage Ratio 103
Main Effect Interactions 105
Peel (Adhesion) Test 112
Results of ANOVA for Strength of Peel (Adhesion) Test 112
Filler Type 115
Foam Density 118
Filler Percentage Ratio 120
Main Effect Interactions 121
Results of ANOVA for the Weight of Peel (Adhesion) Test Sandwiches 128
Filler Type 130
Foam Density 132
Filler Percentage Ratio 136
Main Effect Interactions 137