Comparative study of natural rubber and recycled natural rubber as toughening agent in epoxy foam

Epoxy foam is one of the common materials used, which being applied especially as the insulator material in electronic purposes and aerospace applications. In order to maximize the potential of natural rubber and recycled natural rubber to be acted as effective toughening agent epoxy foam, the rubb...

Full description

Saved in:

Bibliographic Details
Format:	Thesis
Language:	English
Subjects:	Epoxy resins Foam rubber Rubber Toluene Epoxy Polymer foam
Online Access:	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/72932/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/72932/2/Full%20text.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-unimap-72932
record_format	uketd_dc
spelling	my-unimap-729322021-12-16T03:41:36Z Comparative study of natural rubber and recycled natural rubber as toughening agent in epoxy foam Teh, Pei Leng, Dr. Epoxy foam is one of the common materials used, which being applied especially as the insulator material in electronic purposes and aerospace applications. In order to maximize the potential of natural rubber and recycled natural rubber to be acted as effective toughening agent epoxy foam, the rubber phase must be distributed and dispersed well in the epoxy. In addition, the amount of natural rubber (NR) and recycled natural rubber (rNR) play very important role in influencing the mechanical properties of the epoxy foam. Addition of blowing agent: sodium bicarbonate (NaHCO3) to the epoxy system with NR and rNR as toughening agent have been investigated. The epoxy foam samples were fabricated using mechanical mixing technique. Sodium bicarbonate was selected as blowing agent due to the environmental friendly and low cost concern. While natural rubber and recycled natural rubber controls the toughening effect because epoxy foam is brittle in nature. This research consists of three parts of studies. First, the effect of sodium bicarbonate content, secondly, the effect of natural rubber content and lastly, the effect of recycled natural rubber content on the properties of epoxy foam. Mechanical, physical and morphology properties were done. Sodium bicarbonate content was varied at 5, 10, 15 and 20 phr, respectively. Natural rubber and recycled natural rubber content were varied at 5, 10, 15, 20 and 25 volume percentage (vol %), respectively. The experimental results showed the maximum content of the blowing agent was selected at 20 phr and it gave the highest porosity percentage (%), however it revealed the lowest value in mechanical and density properties. The morphology shows that, at 20 phr sodium bicarbonate content produced the high % of porous structure. As for the second part of study, for natural rubber loading, 10 vol % revealed the optimum value of flexural, fracture toughness, density, porosity % and morphology properties. Universiti Malaysia Perlis (UniMAP) Thesis en http://dspace.unimap.edu.my:80/xmlui/handle/123456789/72932 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/72932/4/license.txt 8a4605be74aa9ea9d79846c1fba20a33 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/72932/1/Page%201-24.pdf 0d3840853a2d234012ff54c777e447d6 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/72932/2/Full%20text.pdf ae4f39b40dc21d83b5995f5f7f27ef5b Universiti Malaysia Perlis (UniMAP) Epoxy resins Foam rubber Rubber Toluene Epoxy Polymer foam School of Materials Engineering
institution	Universiti Malaysia Perlis
collection	UniMAP Institutional Repository
language	English
advisor	Teh, Pei Leng, Dr.
topic	Epoxy resins Foam rubber Rubber Toluene Epoxy Polymer foam
spellingShingle	Epoxy resins Foam rubber Rubber Toluene Epoxy Polymer foam Comparative study of natural rubber and recycled natural rubber as toughening agent in epoxy foam
description	Epoxy foam is one of the common materials used, which being applied especially as the insulator material in electronic purposes and aerospace applications. In order to maximize the potential of natural rubber and recycled natural rubber to be acted as effective toughening agent epoxy foam, the rubber phase must be distributed and dispersed well in the epoxy. In addition, the amount of natural rubber (NR) and recycled natural rubber (rNR) play very important role in influencing the mechanical properties of the epoxy foam. Addition of blowing agent: sodium bicarbonate (NaHCO3) to the epoxy system with NR and rNR as toughening agent have been investigated. The epoxy foam samples were fabricated using mechanical mixing technique. Sodium bicarbonate was selected as blowing agent due to the environmental friendly and low cost concern. While natural rubber and recycled natural rubber controls the toughening effect because epoxy foam is brittle in nature. This research consists of three parts of studies. First, the effect of sodium bicarbonate content, secondly, the effect of natural rubber content and lastly, the effect of recycled natural rubber content on the properties of epoxy foam. Mechanical, physical and morphology properties were done. Sodium bicarbonate content was varied at 5, 10, 15 and 20 phr, respectively. Natural rubber and recycled natural rubber content were varied at 5, 10, 15, 20 and 25 volume percentage (vol %), respectively. The experimental results showed the maximum content of the blowing agent was selected at 20 phr and it gave the highest porosity percentage (%), however it revealed the lowest value in mechanical and density properties. The morphology shows that, at 20 phr sodium bicarbonate content produced the high % of porous structure. As for the second part of study, for natural rubber loading, 10 vol % revealed the optimum value of flexural, fracture toughness, density, porosity % and morphology properties.
format	Thesis
title	Comparative study of natural rubber and recycled natural rubber as toughening agent in epoxy foam
title_short	Comparative study of natural rubber and recycled natural rubber as toughening agent in epoxy foam
title_full	Comparative study of natural rubber and recycled natural rubber as toughening agent in epoxy foam
title_fullStr	Comparative study of natural rubber and recycled natural rubber as toughening agent in epoxy foam
title_full_unstemmed	Comparative study of natural rubber and recycled natural rubber as toughening agent in epoxy foam
title_sort	comparative study of natural rubber and recycled natural rubber as toughening agent in epoxy foam
granting_institution	Universiti Malaysia Perlis (UniMAP)
granting_department	School of Materials Engineering
url	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/72932/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/72932/2/Full%20text.pdf
_version_	1747836878677082112

Comparative study of natural rubber and recycled natural rubber as toughening agent in epoxy foam

Similar Items