Methacrylic acid in situ modified steel converter slag/natural rubber composites : Resourceful utilization of steelmaking solid wastes

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As a by-product of the steelmaking industry, the large-volume production and accumulation of steel converter slag cause environmental issues such as land occupation and dust pollution. Since metal salts of unsaturated carboxylic acid can be used to reinforce rubber, this study explores the innovative application of in-situ modified steel slag, mainly comprising metal oxides, with methacrylic acid (MAA) as a rubber filler partially replacing carbon black. By etching the surface of steel slag particles with MAA, their surface roughness was increased, and the chemical bonding of metal methacrylate salt was introduced to enhance their interaction with the molecular chain of natural rubber (NR). The results showed that using the steel slag filler effectively shortened the vulcanization molding cycle of NR composites. The MAA in-situ modification effectively improved the interaction between steel slag and NR molecular chains. Meanwhile, the physical and mechanical properties, fatigue properties, and dynamic mechanical properties of the experimental group with MAA in-situ modified steel slag (MAA-in-situ-m-SS) were significantly enhanced compared with those of NR composites partially filled with unmodified slag. With the dosage of 7.5 phr or 10 phr, the above properties matched or even exceeded those of NR composites purely filled with carbon black. More importantly, partially replacing carbon black with modified steel slag reduced fossil fuel consumption and greenhouse gas emission from carbon black production. This study pioneered an effective path for the resourceful utilization of steel slag and the green development of the steelmaking and rubber industries.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:180

Enthalten in:

Waste management (New York, N.Y.) - 180(2024) vom: 15. Apr., Seite 36-46

Sprache:

Englisch

Beteiligte Personen:

Kong, Hao [VerfasserIn]
Luo, Kangyu [VerfasserIn]
Yong, Zhanfu [VerfasserIn]

Links:

Volltext

Themen:

12597-69-2
1CS02G8656
9006-04-6
Filler
In situ modification
Industrial Waste
Journal Article
Metals
Methacrylates
Methacrylic acid
Natural rubber
Rubber
Solid Waste
Soot
Steel
Steel slag

Anmerkungen:

Date Completed 15.04.2024

Date Revised 15.04.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.wasman.2024.03.024

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM369926412