Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/7382
Título: A Study on Microstructure Characteristics of TEPs-modified Adhesives
Autor: Banea, Mariana D.
Silva, L. F. M. da
Campilho, Raul
Palavras-chave: Thermally expandable particles
Data: 2015
Editora: Cambridge University Press
Relatório da Série N.º: Microscopy and Microanalysis;Vol. 21; Supplement S5
Resumo: Thermally expandable particles (TEPs) were developed by Dow Chemical Co in the early 1970´s [1] and were further developed by others [2, 3]. They are particles made up of a thermoplastic shell filled with liquid hydrocarbon. On heating them, two transformations will occur. One is the softening of shell material and the other is the gasification of the hydrocarbon liquid inside it. As a consequence, the shell will expand as the gas inside it will push the softened shell from inside out causing it to grow in size [4]. When fully expanded, the growth in volume of the particle can be from 50 to 100 times [3]. Owing to this unique behaviour, TEPs are used by the industry in a wide variety of applications mainly for weight reduction and appearance improvement for thermoplastics, inks, and coatings. In adhesive bonding, TEPs have been used for recycling purposes. Moreover, TEPs might be used to modify structural adhesives for other new purposes, such as: to increase the joint strength by creating an adhesive functionally modified along the overlap of the joint by gradual heating and/or to heal the adhesive in case of damage.
Peer review: yes
URI: http://hdl.handle.net/10400.22/7382
DOI: 10.1017/S1431927615013847
Versão do Editor: http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=9887882&fileId=S1431927615013847
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