Preparation Of Anti-corrosion Coatings By Buton Rock Asphalt

Buton rock asphalt(BRA)is a natural rock asphalt,native to southeastern South Pacific Sulawesi province of Indonesia Buton Island(BUTON),its bitumen content of 22%to 24%,the rest of the class limestone mine substances.BRA has a high total natural asphalt softening point,viscosity,oxidation resistance,resistance to water damage resistance,weather resistance,adhesion strong,wax-free,strong corrosion resistant microbes,and many other excellent performance,but also has the price Advantage.BRA huge storage capacity currently mainly used in addition to paving projects,other applications have not yet been widely exploited.BRA highly insoluble in water,and chemical stability,will not react with most of the acid-base,is not sensitive to changes in temperature,higher temperatures can still maintain their physical and chemical stability,and therefore have good resistance corrosion.To replace part BRA asphalt and fine aggregate and mineral powder,not only can improve the performance of materials,you can also save resources and reduce costs.The annual economic losses worldwide due to corrosion caused by the huge,therefore,a growing number of countries have begun to attach importance to study corrosion.From domestic and foreign research status and development point of view,the market not only environmentally friendly,economical,and corrosion-resistant variety is not much anti-corrosion coatings,study,preparation of anti-corrosion coatings BRA been reported.Therefore,this article Buton rock asphalt(BRA),asphalt and epoxy resin as the main film material,adding solvents,fillers,additives,curing agent material,the use of two-component process for preparing Buton rock asphalt anti-corrosion coating.Through the matrix asphalt,different dosage of BRA modified asphalt penetration,softening point and ductility test,BRA can improve the thermal properties of matrix asphalt,high temperature stability,low temperature crack resistance and aging resistance,etc.,and with the increase of dosage of BRA,performance improvement is more apparent,25%BRA is suitable.The modification mechanism is microscopic analysis,and found that BRA stable performance,strong adhesion and for physical modification process.Orthogonal test experimental scheme:A2B3C1D3,namely BRA Modified:60%,diatomite:5%,propylene butyl ether:2%,epoxy resin:20%.Buton rock asphalt incorporation can improve the coating deformation resistance and high temperature performance,improve its low temperature performance;can also improve the coating of corrosion resistance.Tests showed that the process is also incorporated BRA physical processes;erosion of chloride coating chemical reactions did not occur.In this experiment,anti-corrosion coatings prepared Buton rock asphalt,is not limited to conventional materials(such as steel,etc.)corrosion,may also be used for corrosion protection of roads,bridges,ports,airports and other asphalt concrete pavement to reduce winter deicing salt corrosive substances contained in the erosion damage on the road,which is undoubtedly of great significance to the development of the national economy.