10results about How to "High thermal stability" patented technology

The invention relates to a CO2 catalytic conversion catalyst and a preparation method and application thereof.The preparation method of the catalyst comprises the steps that a silicon source, an aluminum source and an inorganic acid aqueous solution are weighed to form white sol, then centrifugation, washing and drying are conducted, white silicon-aluminum composite oxide powder is obtained, a binder is added, rolling ball forming is conducted, and a silicon-aluminum composite oxide carrier precursor is obtained; and weighing the first active component precursor, the second active component precursor and the auxiliary component precursor, loading the precursors on the silicon-aluminum composite oxide carrier precursor in a dipping manner, drying, and roasting to obtain the CO2 catalytic conversion catalyst. Compared with the prior art, the catalyst provided by the invention has the advantages of high activity, high selectivity, high stability and the like in the CO2 reverse water gas shift reaction.

The invention discloses a bio-based modified rosin resin preparation method, which comprises: placing rosin in a container, introducing carbon dioxide, heating and stirring until the rosin is molten, cooling, sequentially adding phenol and solvent oil, stirring, adding a catalyst, and heating to obtain a mixed material liquid; adding water into the mixed material liquid, stirring and washing, introducing carbon dioxide after washing, heating to evaporate out the solvent oil, heating the mixed material liquid to 200 DEG C, adding an antioxidant, pentaerythritol and octanol, stirring and mixing, heating to 260-280 DEG C, carrying out constant-temperature treatment, cooling to 200-220 DEG C, adding the antioxidant and nano-hydroxyapatite, stirring, cooling to 200-220 DEG C, adding the antioxidant and nano-hydroxyapatite, and carrying out uniform mixing, so as to obtain a finished product. And discharging, cooling, filtering and granulating to obtain the bio-based modified rosin resin. The rosin is used for replacing turpentine to produce the rosin modified phenolic resin, formaldehyde is not added in the production process, volatile organic compounds are not generated after the product is applied, and the rosin modified phenolic resin is environment-friendly and safe and can be applied to the field of automobile adhesives.

The invention relates to a polycrystalline diamond compact and a preparation method thereof, and belongs to the field of polycrystalline diamond compact processing. The compact comprises a hard alloy matrix and a diamond layer covering the hard alloy matrix, and further comprises a plurality of micro holes embedded in the diamond layer, and the depth of each micro hole is 100-500 microns. According to the polycrystalline diamond compact, the micropores are formed in the diamond layer, so that the cobalt removal quality of the whole diamond layer can be changed, the thermal stability and the wear resistance of the polycrystalline diamond compact are improved, and the service life of the polycrystalline diamond compact is prolonged; and the aperture size, the inclination angle, the spacing and the layout of the micropores can be flexibly set according to actual requirements, so that the polycrystalline diamond compact suitable for different stratums is obtained.

According to the manufacturing method of the field effect transistor and the field effect transistor provided by the invention, the second conductive type semiconductor body region with different doping concentrations is formed in an ion implantation mode, so that the process and the cost of the field effect transistor are not greatly increased; the doping concentrations of the second conductive type semiconductor body regions are different, so that the starting time of the cells is different, the concentration of current and heat is avoided, the heat resistance stability of the field effect transistor is enhanced, the safe working region is increased, and the on resistance is obviously reduced compared with a device with virtual cells.

The invention provides plastic for an energy storage battery and the battery. The plastic for the energy storage battery comprises modified polyphenylene sulfide, an auxiliary material and a compatibilizer. The main component of the plastic is modified polyphenylene sulfide, and functional groups including but not limited to methyl, ethyl, trifluoromethyl, methoxyl and the like are introduced to the polyphenylene sulfide to modify the polyphenylene sulfide, so that the strength and thermal stability of the material are improved. The auxiliary material is introduced during plastic synthesis on the battery end cover, so that the strength and the mechanical property of the product are improved while the main material is ensured to play a role. And a compatibilizer is introduced during material synthesis, so that the compatibility between blend components of the modified polyphenylene sulfide and the auxiliary material is effectively improved, the interface bonding between the modified polyphenylene sulfide and the auxiliary material is enhanced, the strength of the material is further improved, and the problems that the sealing effect cannot be achieved due to insufficient strength in the using process of the upper plastic and the battery performance is influenced are solved. The invention also provides a battery. The upper plastic of the battery end cover is prepared from the plastic provided by the invention.

The present disclosure discloses a gradient single-crystal positive electrode material, which has a chemical formula of LiNixCoyA1-x-yO2@mLiaZbOc, wherein 0<x<1, 0<y<1, 0<x+y<1, 0<m<0.05, 0.3<a≤10, 1≤b<4, and 1≤c<15, A is at least one of Mn, Zr, Sr, Ba, W, Ti, Al, Mg, Y, and Nb, and Z is at least one of B, Al, Co, W, Ti, Zr, and Si. The atomic ratio of the content of Co on the surface of the single-crystal positive electrode material particle to the content of Ni+Co+A on the surface is greater than 0.4 and less than 0.8, and the atomic ratio of Co at a depth 10% of the radius from the surface of the single crystal positive electrode material particle is not less than 0.3; and the single-crystal positive electrode material particle has a roundness of greater than 0.4, and is free from sharp corners.

The present invention relates to a method for producing animal feed that involves using emulsifiers in combination or mixture with vegetable oleins and glycols. Furthermore, the present invention relates to feed obtained by this method, which has improved physical properties and technical production characteristics. The present invention also relates to the use of said feed in animal nutrition.Finally, the present invention relates to the use of emulsifier e484 and / or e487 (Community Register of Food Additives - European Regulation No. 1831 / 2003) in association or in mixture with vegetable oleins and glycols, as technological additives enabling the increase of the hourly output (tonnes / hour) of an animal feed preparation installation and / or the improvement of the characteristics of animal feed, preferably in the form of granules, in terms of thermal stability and / or stability against microbial proliferation following long-term storage and / or the reduction of their dust.

This invention belongs to the field of catalysis technology, and specifically discloses a sub-nanometer-scale Cu-based intermediate-temperature shift catalyst and its preparation method. The Cu-based intermediate-temperature shift catalyst consists of 20%–30% of a composite oxide support, 30%–40% of Cu sub-nanometer particles supported on the composite oxide support, and 30%–40% of an active agent. Based on a composite oxide support with a specific composition, the preparation process utilizes an active agent, a surfactant, and calcination under a protective atmosphere to ensure that the support is loaded with fully dispersed Cu particles with a main particle size less than 2 nm as the active component. Utilizing the size effect, the two components work synergistically, ensuring high catalytic activity, excellent thermal stability, a wide active temperature range, and a long service life, while also improving the CO conversion rate in application. This Cu-based intermediate-temperature shift catalyst exhibits excellent performance in CO conversion reactions within a temperature range of 180℃–400℃.

The application discloses a Janus active composite film and a preparation method and application thereof, and relates to the technical field of food packaging. The method is used for preparing the Janus composite film by taking pectin as a hydrophilic layer, ethyl cellulose as a hydrophobic layer and chitosan as an intermediate adhesive layer. In the film, the pectin in the hydrophilic layer can adsorb fruit respiratory moisture and release the active substance citral, so that the antibacterial and antioxidant functions are realized; the chitosan in the intermediate layer has the function of an adhesive, so that the composite film is connected more closely; and the ethyl cellulose in the hydrophobic layer can effectively block the invasion of external water vapor, air and bacteria. The asymmetric structure has excellent water locking function and can significantly inhibit fruit weight loss. The preservation method is simple and safe, can delay fruit ripening and prolong the shelf life, and has a wide application prospect.

The present invention relates to a CO 2 A catalytic conversion catalyst and a preparation method and application thereof. The preparation method of the catalyst comprises the following steps: firstly weighing a silicon source, an aluminum source and an inorganic acid aqueous solution to form a white sol, then centrifuging, washing and drying to obtain a white silicon-aluminum composite oxide powder, then adding a binder, rolling and forming a ball to obtain a silicon-aluminum composite oxide carrier precursor; then weighing a first active component precursor, a second active component precursor and an auxiliary component precursor, and loading them on the silicon-aluminum composite oxide carrier precursor by impregnation, drying and calcining to obtain a CO 2 Catalytic conversion catalyst. Compared with the prior art, the catalyst of the present invention has a 2 It has the advantages of high activity, high selectivity and high stability in the reverse water-gas shift reaction.