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Structure and properties of the binary blend rubber / organic montmorillonite nanocomposites

Author: GaoLi
Tutor: LiuXueJun；SongGuoJun
School: Qingdao University
Course: Materials Science
Keywords: Bromobutyl rubber EPDM Nitrile rubber Neoprene Organic Montmorillonite
CLC: TB383.1
Type: Master's thesis
Year: 2010
Downloads: 74
Quote: 0
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Abstract


The subject prepared by mechanical mixing brominated butyl rubber / EPDM rubber / organic montmorillonite (BIIR / EPDM / OMMT) nano · composite material , nitrile rubber / neoprene / organic montmorillonite ( NBR / CR / OMMT) nanocomposites and natural rubber / brominated butyl rubber / organic montmorillonite (NR / BIIR / OMMT) nanocomposites using TEM, SEM and XRD of the nanocomposites Submicrostructure were Characterization , and the vulcanization characteristics of the nano - composite material , the apparent crosslinking density , the physical and mechanical properties , the cold can be , thermal stability and oil resistance were studied . TEM, SEM and XRD showed that the nano - size uniformly dispersed in the base body of the three rubber blends , prepared peel -type nano- composite material ; adds a small amount of OMMT can significantly improve the apparent crosslinking density of the rubber blend ; OMMT pair of OMMT sheet layer to rubber blend has excellent reinforcing effect of OMMT was 3 of BIIR / EPDM / OMMT nanocomposites , NBR / CR / OMMT nano composites and NR / BIIR / OMMT nano composite tensile strength were with pure gel . 13.73MPa, 19.35 MPa and 16.02MPa compared respectively 39% , 50% and 193% , tear strength to 20.4KN / m , 28.9 KN / m and 30.5 KN / m , with pure gum compared respectively 24% , 18% and 78 % ; no effect of OMMT blend rubber vulcanization characteristics of NBR / CR BIIR / EPDM rubber blend and NR / of BIIR rubber blends can significantly reduce the vulcanization time , played promote vulcanization ; OMMT less influence the glass transition temperature of the rubber blend , and even be able to slightly reduce the NBR / CR rubber blend the glass transition temperature , improve its cold can ; add OMMT , nanocomposite oil resistance and thermal stability were significantly improved. Industrial formulations with the 3 copies of the OMMT same amount to replace carbon black used in industrial formulations , can significantly improve the physical and mechanical properties of the product , which increased 16.5% and 28% , respectively, in the inner tube and the tensile strength of the tread rubber , shows OMMT good prospects for industrial application .

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