2results about How to "Efficient preparation process" patented technology

The application discloses a high-temperature gradient structure thermal barrier coating and a preparation method thereof, and belongs to the technical field of thermal barrier coatings.The high-temperature gradient structure thermal barrier coating comprises, from bottom to top, a substrate, a bonding layer, an 8YSZ layer and a rare earth zirconate layer.The bonding layer is made of NiCrAlY alloy; the 8YSZ layer is ZrO2 stabilized by 8% mass fraction of Y2O3; and the chemical composition of the rare earth zirconate layer is LaYbZrCeO7.The application introduces the rare earth doping and double-layer structure design idea into the structure of the thermal barrier coating, so that low thermal conductivity, high thermal expansion coefficient and excellent thermal cycle life can be obtained, and the application has a wide application prospect in the field of thermal barrier coating materials.

The invention belongs to the technical field of material preparation, and relates to a polyarylene ether nitrile wear-resistant dielectric composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, synthesizing poly (arylene ether nitrile) matrix resin with a phthalonitrile-terminated biphenyl structure by adopting a nucleophilic substitution reaction, and secondly, introducing a copper phthalocyanine modification layer on the surface of a molybdenum disulfide nanosheet by utilizing a chemical grafting method, so as to prepare the novel functional nanofiller. The cyano group of copper phthalocyanine in the functionalized nanofiller not only can improve the compatibility between the molybdenum disulfide nanosheet and the polyarylene ether nitrile matrix, but also can be chemically crosslinked with the cyano group of the matrix resin, and then the cyano group and the cyano group are combined through a film casting method and then subjected to a solid-phase chemical reaction to prepare the composite material. The molybdenum disulfide nanosheets have the effects of improving the wear resistance and the dielectric constant, and the finally prepared composite material has the advantages of high glass transition temperature, high dielectric constant, excellent wear resistance, low friction coefficient, good processability, simple and efficient preparation process, and suitableness for large-scale production and application.