Modification of rubber particle filled thermoplastic with high energy electrons [Elektronische Ressource] / vorgelegt von Kunlapaporn Sritragool

Kunlapaporn

Description

     Modification of Rubber Particle filled Thermoplastic with High Energy Electrons Von der Fakultät für Maschinenbau der Technischen Universität Chemnitz Genehmigte Dissertation zur Erlangung des akademischen Grades Doktoringenieur (Dr.-Ing.) vorgelegt von M.Sc. Kunlapaporn Sritragool geboren am 03.07.1980 in Uttaradit, Thailand eingereicht am 10.02.2010 Gutachter: Prof. Dr.-Ing. Michael Gehde Prof. Dr. rer. nat. habil. Gert Heinrich Chemnitz, den 10. 02.2010 URL: http://archiv.tu-chemnitz.de/pub/2010/0095    Bibliographic Description Bibliographic Description Sritragool, Kunlapaporn Modification of rubber particle filled thermoplastic with high energy electrons A Dissertation submitted to the Faculty of Mechanical Engineering, Chemnitz University of Technology, Institut für Fördertechnik und Kunststoffe 125 Pages, 57 Figures, 15 Tables, 102 References Abstract In present study, high energy electrons were used to modify blends based on RP and PP under two conditions: stationary and in-stationary conditions. Modification of blend under stationary condition is a process which is established in industrial application and where required absorbed dose is applied to form parts (after molding) at room temperature and in solid state.

Informations

• Publié par: technische_universitat_chemnitz
• Publié le: 01 janvier 2010
• Nombre de lectures: 6
• Langue: English
• Poids de l'ouvrage: 3 Mo

Extrait

Gutachter:

von M.Sc. Kunlapaporn Sritragool

Von der Fakultät für Maschinenbau der

Doktoringenieur

Technischen Universität Chemnitz

Modification of Rubber Particle filled Thermoplastic with High Energy Electrons

Prof. Dr. rer. nat. habil. Gert Heinrich

Chemnitz, den 10. 02.2010

URL: http://archiv.tu-chemnitz.de/pub/2010/0095

Dissertation

(Dr.-Ing.)

eingereicht am 10.02.2010

geboren am 03.07.1980 in Uttaradit, Thailand

Prof. Dr.-Ing. Michael Gehde

vorgelegt

zur Erlangung des akademischen Grades

Genehmigte

Bibliographic Description

Bibliographic Description

Sritragool, Kunlapaporn

Modification of rubber particle filled thermoplastic with high energy electrons

A Dissertation submitted to the Faculty of Mechanical Engineering, Chemnitz University of Technology, Institut für Fördertechnik und Kunststoffe

125 Pages, 57 Figures, 15 Tables, 102 References

Abstract

In present study, high energy electrons were used to modify blends based on RP and PP under two conditions: stationary and in-stationary conditions. Modification of blend under stationary condition is a process which is established in industrial application and where required absorbed dose is applied to form parts (after molding) at room temperature and in solid state. On the contrary, the modification of blend with high energy electrons under in-stationary condition is a new process (electron induced reactive processing) where required absorbed dose is applied to a molten state during melt mixing process. The modification of blend based on RP and PP under stationary condition resulted in slightly enhancement of tensile properties while the modification of this blend under in-stationary condition resulted in deterioration of tensile properties due to degradation of the PP matrix. Thus, special grafting agent (GA) is required for improving the tensile properties. The effect of different GAs on tensile, thermal, dynamic mechanical as well as morphological properties and melt flow properties of blends based on RP and PP were determined. The optimum absorbed dose for modification of blend based on RP and PP under both conditions was evaluated. In addition, the effect of treatment parameters of electron induced reactive processing was investigated.

Keywords:recycling, Rubber particle, Polypropylene, Grafting agent, Rubber Blend, Interfacial adhesion, Compatibility, High energy electrons, Stationary condition, In-stationary condition (electron induced reactive processing)

III

Acknowledgements

Acknowledgements

This present work was conducted between January 2007 and December 2009 at the Institut für Fördertechnik und Kunststoffe (IFK), Professur Kunststoffe at the Chemnitz University of Technology.

First of all, I would like to express my gratitude to my supervisor, Prof. Dr.-Ing. Michael Gehde who gave me a chance to work as well as study at this institute. I would also like to gratefully and sincerely thank him for his guidance and encouragement during my studies.

I would also like to express my deepest gratitude to my co-supervisor, Dr.-Ing. Hannes Michael and Dr. rer. nat. Uwe Gohs, who are most responsible for helping me complete the writing of this dissertation as well as challenging research that lies behind it. Without their kindness, guidance and encouragement, I could not have finished my dissertation.

My special thanks are due to the IFK, Professur Kunststoffe for providing financial support and technical as well as scientific background.

I would like to thank Dipl.-Ing. Jan März and Mr. Rocco Sickel for the assistance during the experimental works. I would also like to thank the other staff of IFK, Professur Kunststoffe and colleagues who supported and helped me during the works.

Finally, and most important, I would like to thank my mother and my aunt for their love, for educating me, for support, for listening to my complaint and for believing in me.

Chemnitz, February 2010

 Kunlapaporn Sritragool

V

List of Abbreviations and Symbols

Bibliographic Description

Contents

Acknowledgement

 23

19

 5.1 Materials used

5 Experimental

 31

3 Aim of study

4 Tasks of study

 11

 2.3 Polymer modification with high energy electrons

 2.2.1 Enhancement of interfacial adhesion via compatibilization technique 7

 2.2.2 Enhancement of interfacial adhesion via surface treatment

 2.4 Electron induced reactive processing

21

 5.3 Electron treatment

 10

2 State of the art

XI

 21

 15

17

V

1 Introduction

 28

 5.4 Preparation dumbbell-shaped specimen 30

VII

 5.2 Preparation of blends

Contents

 2.2 Utilization of rubber particle in thermoplastics

 2.1 Size reductiontechniques used in production of rubber particle

 5.5 Characterization methods

5

7

5

1

III

 with DTMPTA

 6.5.4 Effect of new processing parameters on properties of e-blend_dyn 81

VIII

 6.3.1 Characterization of modified PP (PP*)

 6.4.3 Effect of dose on properties of e-blend_stat with different

 6.4.4 Recyclability of e-blend_stat with DTMPTA modified at absorbed 65

 dose of 80 kGy

 6.4.2 Effect of grafting agent on properties of e-blend_stat modified at 53

 6.5.2 Effect of grafting agent on properties of e-blend_dyn modified at 71

 without grafting agent

 6.1.2 Electron induced reactive processing

 6.4 Rubber particle/polypropylene e-blend_stat

 35

 absorbed dose of 40 kGy

 6.1.3 Processing parameters

 35

 6.1 Experimental setup

6 Results and discussion

 70

 70

 61

 45

 6.4.1 Effect of dose on properties of e-blend_stat without grafting agents 51

 38

 36

 6.3 Rubber particle/polypropylene/modified polypropylene blend

 6.1.1 Stationary treatment

 51

 45

 46

 6.5.3 Effect of dose on properties of e-blend_dyn with DTMPTA

 35

 6.2 Comparison of blend prepared by twin screw extruder and internal mixer 44

 6.5 Rubber particle/polypropylene e-blend_dyn

 6.3.2 Effect of modified polypropylene on properties of blend

 absorbed dose of 40 kGy

 6.5.1 Effect of high energy electrons on properties of e-blend_dyn

 77

 grafting agents

Contents

Contents  6.6 Comparisons of e-blend_stat as well as e-blend_dyn with EA

7 Conclusions and further study

8 References

Appendix A

Curriculum Vitae

IX

 86

91

97

109

111

CPE

DCP

AN

AAc

Electron Beam

Ethylene-Acrylic Acid

AAm

XI

Elastomeric Alloy

1,4-Butabediol Diacrylate

List of Abbreviations and Symbols List of Abbreviations and Symbols

DHBP

DPGDA

Dicumyl Peroxide

BDDA

ATU

Chlorinated Polyethylene

EA

EAA

EB

2,5-dimethyl-2,5-di(tert-butylperoxy)hexane

Ethylene Vinyl Acetate copolymer

Epoxidized Natural Rubber/Vinyl Monomer-grafted- Linear Low Density Polyethylene

Ethylene Propylene Diene Monomer rubber

Electron Spectroscopy for Chemical Analysis

ENR/LLDPE-g-VM

EPDM

ESCA

Dipropyleneglycol Diacrylate

Dtrimethylol Propane Tetraacrylate

Acrylonitrile

Acrylamine

Acrylic Acid

Abbreviations

Benzyl Dimethyl Ketal

A-TMMT

DTMPTA

BDK

DEGDMA

EVA

1-Allyl-2-Thiourea

Tetramethylolmethane Tetraacrylate

Diethylene Glycol Dimethacrylate