Abstract: This paper analyzes the chemical composition and structural characteristics of the fly ash in the Jining area, and how it could improve the performance of the anticorrosive coating of polyolefin adhesive tapes with a focus on the influence of the fly ash content on their mechanical properties. The experimental results show that the fly ash is mainly composed of SiO₂, Al₂O₃, and Fe₂O₃, the total mass fraction of which is approximately 88.04%. The mass fraction of CaO is 12.40%. The fly ash is an alkaline ash with a small amount of amorphous vitreous bodies and certain crystal minerals such as quartz, mullite, and hematite in it. Subsequent to adding fly ash, the mechanical properties of the anticorrosive coating of polyolefin adhesive tapes are improved. Subsequent to adding 15 batches of fly ash, the mechanical properties of the test sample are optimal with its tensile strength being 91.93 N/cm. Furthermore, the elongation at fracture is 536.67%, and the peel strength is 33.43 N/cm. Fly ash is an excellent filler that can replace calcium carbonate in the production of the anticorrosive coating of polyolefin adhesive tapes. The study can not only improve the utilization and added value of fly ash, improving the properties of the anticorrosive coating of polyolefin adhesive tapes, but it can also provide a theoretical basis for industrial applications of industrial fly ash in rubber reinforcement.

Key words: fly ash, synthetic rubber, anticorrosive coating of polyolefin adhesive tapes, reinforced performance