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Titolo:
Continuous ultrasonic devulcanization of NR/SBR blends
Autore:
Hong, CK; Isayev, AI;
Indirizzi:
Univ Akron, Inst Polymer Engn, Akron, OH 44325 USA Univ Akron Akron OH USA 44325 ron, Inst Polymer Engn, Akron, OH 44325 USA
Titolo Testata:
JOURNAL OF APPLIED POLYMER SCIENCE
fascicolo: 1, volume: 83, anno: 2002,
pagine: 160 - 168
SICI:
0021-8995(20020103)83:1<160:CUDONB>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
MOONEY SCORCH TIME; MECHANICAL-PROPERTIES; RUBBER; SBR; VULCANIZATION; NETWORK;
Keywords:
devulcanization; blends; natural rubber (NR); styrene-butadiene rubber (SBR); curing; mechanical properties; process parameters; ultrasound; rheology;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
18
Recensione:
Indirizzi per estratti:
Indirizzo: Isayev, AI Univ Akron, Inst Polymer Engn, Akron, OH 44325 USA Univ Akron Akron OH USA 44325 olymer Engn, Akron, OH 44325 USA
Citazione:
C.K. Hong e A.I. Isayev, "Continuous ultrasonic devulcanization of NR/SBR blends", J APPL POLY, 83(1), 2002, pp. 160-168

Abstract

The ultrasonic devulcanization of sulfur-cured natural rubber (NR)/styrene-butadiene rubber (SBR) blends was studied with the goal of understanding the devulcanization of rubber vulcanizates in which two networks of different natures were present. Also, similarities and differences in the devulcanization behaviors of NR, SBR, and their blends were found. During the devulcanization of cured NR/SBR blends, we observed that, as for NR, the ultrasonic power consumption for 75/25 and 50/50 (w/w) NR/SBR blends passed througha maximum at 7.5 mum. For SBR and 25/75 (w/w) NR/SBR blends, the power consumption increased with increasing ultrasonic amplitude. The higher power consumption led to a higher degree of devulcanization. The crosslink densities of the devulcanized 25/75, 50/50, and 75/25 (w/w) NR/SBR blends were lower than those of the devulcanized NR and SBR, possibly because of the reduced degree of unsaturation. The tensile properties of the revulcanized blends were lower than those of the virgin vulcanized blends. (C) 2002 John Wiley & Sons, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 11/07/20 alle ore 11:01:18