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1299results about How to "Make up for deficiencies" patented technology

Iron tailing-based complex mineral admixture and preparation process thereof

The invention relates to an iron tailing-based complex mineral admixture and a preparation process thereof. The preparation process comprises the following steps of: respectively drying iron tailing sand, industrial waste slag and limestone till water content is not more than 1% for later use; adding gypsum to match with iron tailings, the industrial waste slag and the limestone after drying, then sending into a ball grinding machine to perform powder grinding, and adding grinding aids during the powder grinding process; and uniformly mixing the obtained iron tailing powder, industrial waste slag powder and limestone powder to obtain the iron tailing-based complex mineral admixture. The iron tailing-based complex mineral admixture disclosed by the invention has the beneficial effects that 1) the iron tailings are matched with other industrial waste slag, the admixture for concrete is prepared by simple mechanical fine grinding, and the performance is better; 2) the performance is good, and the iron tailing-based complex mineral admixture can be used for preparing the concrete with the strength grade of C50-C80; 3) a variety of industrial wastes are scientifically and effectively compounded, the activity and particle size synergy of each component against cement and the concrete can be fully exerted to enable the advantages of all the components to complement each other, and the over-superimposed effect is further realized; and 4) the production process is simple and conductive to industrial production, popularization and application.
Owner:WUHAN UNIV OF TECH

Zinc-graphene heavy-duty anti-corrosive coating and preparation method thereof

The invention relates to a zinc-graphene heavy-duty anti-corrosive coating and a preparation method thereof. The coating comprises a component A and a component B, wherein the component B contains a curing agent; the component A contains the following components in percent by mass: 10-20% of a graphene epoxy resin solution, 0.5-2% of an anti-settling agent, 15-30% of zinc powder, 2-10% of aluminum powder, 35-50% of an antirust pigment filling material and 5-10% of an organic solvent; the graphene epoxy resin solution comprises the following components in percent by mass: 1-10% of graphene, 80-90% of an epoxy resin solution, 5-10% of an organic solvent and 1-2% of an additive. Graphene is added into the coating, so that the zinc content is reduced, zinc oxide smog generated during welding is reduced, and the coating is super-strong in water resistance and corrosion resistance. When the coating is prepared, graphene is subjected to pre-soaking treatment to be uniformly dispersed on epoxy groups of epoxy resin, so that the defect that graphene is easy to agglomerate is overcome, the excellent performance of graphene is fully played, and an intermediate with the combination of the advantages of zinc and graphene is obtained. The salt-fog resistance time of the coating prepared by the intermediate is more than 1200 hours.
Owner:江苏道蓬科技有限公司
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