3results about How to "Increase high temperature viscosity" patented technology

This invention belongs to the field of asphalt modification technology and discloses a high-performance rubber composite modified asphalt and its preparation method. The high-performance rubber composite modified asphalt is prepared by mixing asphalt and a high-performance rubber composite granular modifier. The high-performance rubber composite granular modifier is obtained by extruding and granulating a novel thermoplastic elastomer, desulfurized rubber powder, and a rubber deodorizer using a multi-stage screw extruder. The novel thermoplastic elastomer is obtained by chemical grafting of a moderately pyrolyzed rubber polymer, a thermoplastic elastomer, and a second free radical scavenger. The desulfurized rubber powder is obtained by high-temperature oxygen-free degradation of a second rubber powder and a third free radical scavenger. Compared with traditional rubber composite modified asphalt, the modified asphalt of this invention exhibits superior high and low temperature performance, heat and oxygen aging resistance, and storage stability. It also has good workability, minimal performance degradation during long-term high-temperature storage, significantly reduced odor emissions, and a more stable and lasting odor-neutralizing effect.

The application discloses an Hf-Ta-Si / (Hf,Zr)B2 layered composite ultrahigh-temperature protective coating which is composed of a TaSi2 bottom layer, a ceramic layer surface layer with (Hf,Zr)B2 ultrahigh-temperature ceramic as a main phase and a Ta5Si3 interface reaction layer located at the interface between the substrate and the TaSi2 bottom layer, and the interface between each layer is an in-situ reaction autogenous interface; the coating is obtained by prepositioning the slurry of raw material powder on the surface of a tantalum alloy, drying, and then vacuum reaction sintering in one step; the coating has excellent ultrahigh-temperature oxidation resistance, heat scouring resistance and thermal shock resistance, and can effectively protect the tantalum alloy material under the conditions of oxygen, heat scouring and strong thermal shock at 1000 DEG C to 1800 DEG C; the method can reduce the adverse effects of the melting and sintering process on the microstructure and mechanical properties of the tantalum alloy, avoid the problem of preparing the ultrahigh-temperature ceramic coating on the surface of a tantalum alloy with a complex shape, and has higher coating deposition efficiency and lower cost.

The application discloses a kind of high anti-sputtering drainage asphalt mixture and preparation method thereof, it is related to bitumen technical field.The raw materials of asphalt mixture include matrix asphalt, styrene-butadiene-styrene block copolymer, butyronitrile rubber microsphere, carboxyl silicone oil, composite modified aggregate, composite additive, graphene oxide mixed solution, calcium lactate.The preparation method of asphalt mixture includes the steps of composite modified aggregate preparation, preparation of graphene oxide mixed solution, preparation of composite additive, and preparation of asphalt mixture.The drainage asphalt mixture prepared by the application has strong anti-sputtering performance, excellent drainage performance and good anti-rutting performance.