A novel and sustainable rubber composite prepared from electric arc furnace slag as carbon black replacement  

作　　者：Anna Gobetti Giovanna Cornacchia Silvia Agnelli Mattia Ramini Giorgio Ramorino 

机构地区：[1]Materials Science and Technology at Department of Mechanical and Industrial Engineering,University of Brescia,Via 9 Branze 38,25123 Brescia,Italy [2]Metallurgy at Department of Mechanical and Industrial Engineering,University of Brescia,Via 9 Branze 38,25123 Brescia,Italy [3]Italian Gasket S.P.A.,Via Tengattini N.9,(Bs),Paratico 25030,Italy

出　　处：《Carbon Resources Conversion》2024年第4期70-84,共15页碳资源转化(英文)

摘　　要：Carbon black (CB) is the most widely used reinforcing filler for rubber. Nowadays there are several concerns regarding this traditional petroleum-based filler: on one side its environmental footprint is enormous and its production process is no more sustainable and on the other side its price increases annually. For these reasons, sustainable alternative fillers are being studied. In the present research the main waste of the steel industry, namely the steel slag from electric arc furnace (EAF), is investigated as non-conventional filler for a nitrile butadiene rubber matrix (NBR). The slag has been characterized to ensure its safe reuse as filler according to the heavy metals leaching. The slag filled compounds have been characterized and compared to CB filled compounds, in terms of processability by rheometric parameters, mechanical properties, Payne effect, and physicochemical properties to investigate the filler-matrix interaction. From the obtained results, it was shown that EAF slag-filled NBRs are comparable to CB filled NBRs in terms of crosslink kinetics and, when compared at the same hardness level, are comparable in terms of viscosity, stiffness, and elongation at break, while when compared at the same filler volume fraction are similar in terms of compression set and stress relaxation.

关 键 词：EAF slag as non-conventional filler Carbon black replacement Rubber composite Mechanical characterization Rubber-filler interaction Industrial waste reuse 

分 类 号：TG1[金属学及工艺—金属学]