Chemical Modification of Carbon Black for Coloring
Abstract
Sealing profiles that are mainly used to prevent the ingress of water, noise, dust and air in the automotive industry are produced from synthetic Ethylene-propylene-diene monomer (EPDM) rubber. Although EPDM rubber is preferred due to its high mechanical properties and waterproof structure, it is necessary to reinforce it with various additives due to the requirements for profiles in automotive manufacturers' specifications. One of the fillers used to keep the fluidity at the desired level during production and to improve the mechanical properties and UV resistance of the profiles is carbon black (CB) and has the highest contribution rate in the EPDM rubber formulation. Due to its high amount in the rubber formulation, it allows the rubber formulation and subsequently the sealing profiles produced with this formulation to be produced only in black. However, recently, automotive manufacturers have demanded different color profiles in line with the demands of end users. Solubility and reactivity of CB is low and it tends to aggregate. In order for CB to be colored, its surface will be activated and polarized using different chemicals. After that, a suitable dye can be attached to the structure after its structure has been determined by elemental analysis, Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), Energy Dispersive X-Ray Analysis (EDX) and Thermal Analysis (TGA-DSC). After EPDM rubber will be produced by colored CB, the first colored sealing profile that has not been produced in our country and in the world yet, can be achieved.
Keywords
Carbon black oxidation, Colored carbon black, EPDM, Colored EPDM, Colored sealing profiles.
Supporting Institution
Duzce University
Project Number
BAP - 2020.05.03.1073
Ethical Statement
We declare that this study is among the studies that do not require ethics committee approval.
Thanks
This work is supported by Düzce University Scientific Project (Project no: 2020.05.03.1073). The authors gratefully acknowledge the financial support of this work provided by the Duzce University Research Fund. The authors also wish to thank to the Standard Profile Corporation, Turkey, for technical support.
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