Biodiesel Compatibility with Elastomers and Steel

Abstract

This chapter describes the compatibility of biodiesel with automotive components, such as metallic and polymeric materials. It consists of a survey of literature as well as research results obtained by the authors. Aspects as wear, corrosion, and degradation materials are discussed.

Pengaruh Bahan Bakar Campuran Biodiesel Berbahan Dasar Minyak Sawit terhadap Elastomer NBR

“…Kandungan biodiesel pada B30 dan B40 menyebabkan terjadinya absorbsi solven biodiesel terhadap elastomer yang mengakibatkan reaksi pada cross-linking atau hubung silang dari rantai polimer sehingga terjadi relaksasi rantai polimer [5]. Swelling massa dan volume pada NBR dan karet alam akan mengalami peningkatan seiring dengan peningkatan konsentrasi biodiesel, elastomer lebih terdegradasi oleh gugus polar karbosilat biodiesel [12,16]. Hasil pengujian swelling volume dan massa dapat dilihat pada tabel 4 dan 5.…”

Biofuels-related materials deterioration in biorefineries, transportation and internal combustion engines: a technical review

“…Products of oxidised biofuel may include gummy polymers (adherent insoluble [51]) with high adhesion; as the other source of UDC. Corrosive wear, a degradation process during which tribomechanical occurs against material surface within a corrosive medium [7], is occasionally reported in direct contact between functional metals and alloys with biofuels and their blends [80]. Meanwhile, the diesel engines require lubricating properties in the fuel to avoid direct contact between moving counterparts [81].…”

“…Overall, the corrosion rate in biodiesel is dependent on (1) the type of the materials (copper (0.39278 mpy); brass (0.209898 mpy); aluminium (0.173055 mpy) and cast iron (0.112232 mpy)); which is always reported to be higher than normal diesel (copper (0.2117 mpy), brass (0.1653 mpy), aluminium (0.14492 mpy) and cast iron (0.00984 mpy)) [7], (2) microbial growth, (3) moisture content, (4) operating temperature and (5) the nature of biofuel and its’ origin. The corrosion mostly happens by the formation of the anodes near the area exposed to higher water contents and the cathodes along the water–biodiesel interface [8], which has resulted in a rust-covered anodes and oily cathode surfaces [9].…”

Fuel sorption into polymers: Experimental and machine learning studies

“…To address this problem, one solution consists in using multilayer structures containing interleaved barrier polymers [10]. Up to date, only few works have been published in the litterature dealing with the compatibility between polymeric materials and fluids, and there is a lack of available experimental data [11].…”