The Microstructure of Polyurethane (PU)/Ethylene-Vinyl Acetate (EVA) Polymer Lastomer of Analysis

Ya Bin Li; Jin Tian Huang

doi:10.4028/www.scientific.net/AMR.652-654.475

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 652-654The Microstructure of Polyurethane...

The Microstructure of Polyurethane (PU)/Ethylene-Vinyl Acetate (EVA) Polymer Lastomer of Analysis

Abstract:

EVA / PU are used as the polymer elastomer in this paper by the approach of graft copolymerization. By the scan analysis of EVA / PU flexible tensile fracture surface, it could be found, with the augment of EVA, the cross-section shows the transition from brittle fracture to ductile fracture, as well as a clear plastic deformation in the micro-fracture zone. The phenomenon of graft copolymerization between the EVA and PU can be observed by scanning probe micrograph . What’s more, while the height of the molecules increases，the molecules become increasingly small, indicating that the grafting reaction occurs between the free hydroxyl in EVAL and PU prepolymer.

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Periodical:

Advanced Materials Research (Volumes 652-654)

Pages:

475-480

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.652-654.475

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Online since:

January 2013

Authors:

Ya Bin Li, Jin Tian Huang

Keywords:

Graft, Microstructure, Polymer

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