Journal
JOURNAL OF POLYMER RESEARCH
Volume 18, Issue 4, Pages 533-539Publisher
SPRINGER
DOI: 10.1007/s10965-010-9446-9
Keywords
Ground tire rubber; Low-density polyethylene; Compatibility; Recycling; Foaming agent
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Funding
- National High Technology Research and Development Program (863 Program) [2008AA06Z343]
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The foamed composites made from low-density polyethylene(LDPE) and ground tire rubber(GTR) powder using azodicarbonamide as chemical blowing agent have been investigated. Solid state shear milling was used to enhance the processability and foamability of LDPE/GTR blends by a pan-mill type mechanochemical reactor. First the blends of LDPE/GTR were prepared by co-milling, then the samples were melt-mixed in a Brabender Plasti-Corder, saturated with blowing agent, crosslinking agent and blowing co-agent, and finally the saturated specimens were expanded during the pressure-quench process. The results indicated that the mechanical properties of the LDPE/GRT foamed composites were improved, and the blends of co-milled GTR and LDPE powder showing better processability and foamability than those obtained in a conventional melt-mixing manner, as indicated by the rheological and morphological studies.
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