17 results about "Chemical stability" patented technology

The invention provides a two-dimensional double perovskite material. The composition formula of the two-dimensional double perovskite material is AnMIIIMIX8, wherein A is organic amine; MIII is a trivalent metal element; MI is a monovalent metal element; and X is halogen. The two-dimensional double perovskite material has certain advantages of methylamine lead-iodine perovskite and lead-free double perovskite. The material is lead-free and environmentally friendly, has very good light stability and good chemical stability, and is unlikely to deteriorate in air. The material has a suitable andadjustable light absorption band gap, and more importantly can be used for preparing a film at a low temperature by a solution method. The advantages provide basis for the application of the materialin the photovoltaic fields such as solar cells, optical detectors and light-emitting diodes.

The invention discloses a surface artemisinin molecule imprinting adsorbing material of a vegetable sponge. The material is characterized characterized by being prepared by the following steps of: preparing a polymer by selecting vegetable sponge as a substrate material, taking artemisinin as a template molecule, taking itaconic acid and acrylamide as functional monomers, taking ethylene glycol dimethacrylate as a cross-linking agent, taking azodiisobutyronitrile as an initiator and taking N,N-dimethylformamide as a solvent; and removing the artemisinin by using a hexane-diethyl ether mixed solution. The invention further provides a preparation method and an application method of the surface artemisinin molecule imprinting adsorbing material of the vegetable sponge. The surface artemisinin molecule imprinting adsorbing material of the vegetable sponge can separate the artemisinin with a structural analogue under normal pressure and temperature conditions; and the surface artemisinin molecule molecular imprinting adsorbing material of the vegetable sponge has the advantages of specificity, selectivity, good mechanical performance, good chemical stability, fast adsorbing speed, easiness for being eluted, biodegradability, simple process, regeneration capability, environmental friendliness and the like.

The invention relates to a fluorocarbon surfactant and a preparation method thereof, which reacts 10-50 parts by weight of perfluoroalkyl sulfonyl fluoride, 5-45 parts by weight of amine and 20-25 parts by weight of solvent at the temperature of ranging from 20 DEG C to 110 DEG C for 2 through 12 hours to acquire an intermediate product; mixing well the intermediate product with 10-30 parts by weight of an oxidant and stirring the mixture for reaction at the temperature of ranging from 20 DEG C to 80 DEG C for a plurality of hours; adding 0.1-2.5 parts by weight of an accessory ingredient and mixing well after the reaction is finished; in this way, the product is acquired when the filtrated product is stirred and mixed with 5-30 parts by weight of a de-ionized water at the temperature of ranging from 0 DEG C to 50 DEG C. Compared with the prior art, the product prepared by the invention is of short technical process of preparation, simple operation, high reaction efficiency, low production cost and is characterized by high surface activity, high thermal stability and high chemical stability. The surface tension of a water solution of 0.01 percent is lower than 16dyn/m, and the CMC value is lower.

The invention discloses stainless steel crucible paint used for smelting an aluminum-lithium alloy as well as a preparation method thereof and a coating method thereof. In raw materials of stainless steel crucible paint, a binder accounts for 40-60% of all components, wherein aggregates are Y2O3 powder with grain size of 800-1000 meshes. The preparation method comprises the following steps: (1) uniformly mixing Al(OH)3 and MgO, adding water and phosphoric acid, and stirring to heat to a temperature of 50-80 DEG C; (2) adding aluminum powder, CrO3, zinc chrome and Y2O3 powder, and uniformly stirring; and (3) performing ball-milling mixing. The coating method comprises the following steps: grinding the inner surface of a stainless steel crucible, and heating the inner surface to a temperature of 70-90 DEG C; spraying paint to the inner surface of the crucible by a spray gun, heating up to a temperature of 800-850 DEG C to preserve heat after air-drying, and cooling along with a furnace.The paint disclosed by the invention has good thermal shock property and good chemical stability.

The invention discloses an injection molding method, comprising the following steps: preparing materials and placing the prepared materials into an injection molding machine for injection molding; adding dispersing oil into the raw material, wherein, the adding amount of the dispersing oil is as follows: 2-4g of dispersing oil is added in 1g of raw material; adding 1.4-1.8g of toner to 1g of raw material; and evenly stirring for 5-20 minutes for injection molding. Compared with the existing method, the method is characterized by comprising the following steps: preparing materials and placing into an injection molding machine for injection molding; adding dispersing oil into the raw material in preparing the materials, wherein, the adding amount of the dispersing oil is as follows: 2-4g of dispersing oil is added in 1g of raw material; adding 1.4-1.8g of toner to 1g of raw material; and evenly stirring 5-20 minutes for injection molding; and replacing the original white oil by the dispersing oil. The raw material is easier to disperse in stirring, the chemical stability of the dispersing oil is more stable, thus the antioxidant performance is good in injection molding, black spots can not occur on the product, and the property of the dispersing oil plays the effects of releasing agent.

The invention relates to a manufacture method for P-type ZnO ohim electrode, which comprises: depositing Ni on P-type ZnO with vacuum evaporation device to form the first layer of Ni electrode material; depositing Au to form the second Au layer of electrode material as electrode; taking rapid hot annealing to prepared electrode in nitrogen at low temperature to reduce potential barrier height between metal and semiconductor interface for the atom mutual diffusion and achieve ohim contact. This invention can improve greatly the ohim property and reliability of electrode.

The invention discloses a high temperature direct formate fuel cell (Na-DFFC) with electricity and alkali salt co-production belonging to the field of fuel cells, including a non-platinum cathode and a non-platinum anode using polytetrafluoroethylene (PTFE) as a binder, and a cationic membrane of a sodium ion form. Compared with traditional formate fuel cells, additional electrolyte (such as sodium hydroxide) is not required to be added to the Na-DFFC anode, so that the energy density of the system is improved, and the design complexity and cost of the system are reduced. In addition, by replacing the traditional anionic membrane with the cationic membrane of a sodium ion form, the shortcomings of poor thermal stability and poor chemical stability of the anionic membrane are overcome. At the same time, by replacing the traditional ion exchange resin binder with the polytetrafluoroethylene (PTFE), the fuel cell compared with the traditional fuel cell is more resistant to high temperature. In addition, important chemical raw materials including sodium hydroxide and sodium carbonate are produced along with electricity outputting by the Na-DFFC, that is, forming the so-called electricity and alkali salt co-production, so that the range of applications is very wide.

The invention relates to synthesis of an end amino silicone oil modified stryenemaleic anhydride copolymer. The synthetic route comprises the following steps: in a flask, adding 80-100 parts of a stryenemaleic anhydride copolymer and 100-300 parts of a solvent; stirring the mixture at 45-60 DEG C, adding 0.5-10 parts of a catalyst aqueous solution till the materials are fully dissolve; stirring the mixture for 0.5 h; dropwise adding 20-50 parts of an end amino silicone oil solution through a constant flow pump; heating the mixture to 70-90 DEG C after dropwise addition; keeping the temperaturefor 3-6 hours; continuously heating the mixture to 100-150 DEG C; refluxing the mixture for 4-10 hours; exsecting low-boiling-point substances in the system by a water konckout vessel; and after thereaction, drying the mixture to obtain a target product: a polymer elastomer with a maleimide structure on a main chain. The modified novel material has excellent performance of organic silicon, polyolefin and maleimide, has good chemical stability resistance, heat resistance and toughness, and can be applied to the fields of coatings, hot melt adhesives and the like.

The invention discloses a preparation method of a filtering material for adsorbing fluorine ions in water, and a preparation method, wherein Al-PAM, NaOH, diethylenetriamine, carbon disulfide, (NH4)2CO3, AlCl3 and a monomer acrylamide are used main raw materials, an adsorbent uses a metal hydroxide colloid as a base material, and a large number of polyacrylamide polymer branch chains are grafted on the surface of nanoparticles to obtain an organic-inorganic hybrid flocculating agent. According to the present invention, the raw materials are simple, the preparation process and the treatment process are simple, the chemical stability is high, the method is easy to implement in practical applications, and the product has excellent adsorption effect on fluorine ions in water.

The invention provides a preparation method of a ceramic material with a hollow tube micro-lattice structure. The method comprises the following steps: 1, preparing raw materials; enabling the modified ceramic precursor in the molten state to pass through a direct writing forming device; preparing a ceramic material with a three-dimensional lattice structure, printing in a protective atmosphere toobtain a rough blank with a three-dimensional lattice structure, carrying out incomplete cross-linking reaction on the rough blank with the three-dimensional lattice structure in a cross-linking atmosphere to obtain an incomplete cross-linked blank; and removing uncross-linked parts in the blank to obtain a hollow tube micro-lattice precursor bracket, and carrying out pyrolysis to obtain the hollow tube micro-lattice structure ceramic material. The ceramic material with a unique structure is obtained by combining an additive manufacturing technology with subsequent heat treatment, so that thedefects of high manufacturing cost and complex process of the conventional hollow tube micro-lattice material are overcome, and the thickness of the tube wall is regulated and controlled between 1 micron and 100 microns. The low density of the material is ensured, the high strength, high hardness, excellent chemical stability and thermal stability of the ceramic are maintained, and the ceramic sample piece with various structures and complex shapes is obtained.

The invention discloses a composite electrolyte material and a preparation method thereof and belongs to the technical field of lithium secondary ion battery electrolytes. Polymer fibers are prepared by an electrostatic spinning method, then silicon oxide/polymer composite fibers are prepared by a polycondensation method, and the silicon oxide/polymer composite fibers are soaked in an ionic liquid electrolyte for adsorption treatment to obtain the ionic liquid/silicon oxide/polymer fiber composite electrolyte material. A silicon oxide/polymer composite fiber material is used as a skeleton, has high adsorption space and adsorption efficiency, and can absorb a large amount of active ionic liquid components; the ionic liquid containing the lithium salt is used as an active liquid component for loading ionic conduction, has the characteristics of high ionic conductivity, non-volatility, non-flammability, chemical stability and the like, and is applied to a lithium battery system, so safety of the battery is effectively improved; the composite electrolyte material provided by the invention has high ionic conductivity and high thermal decomposition temperature, and meets the normal operation of the lithium secondary battery.

The invention provides an optical glass, the preparation method therefor and the optical components thereof. The optical glass consists of the following components in compound by percentage, silicon dioxide: 26% to 29%, preferring 26% to 28%; barium oxide: 11% to 17%, preferring 12% to 15%; titanium dioxide: 7% to 13%, preferring 8% to 12%; zirconium dioxide: 4% to 8%, preferring 5% to 7%; niobium pentoxide: 35% to 40%, preferring 37% to 39%; lithium oxide: 2% to 7%, preferring 3% to 6%; sodium oxide: 1% to 5%, preferring 2% to 4%; boric oxide: 0% to 4%, preferring 0.5% to 2%; lanthanum oxide: 0% to 4%, preferring 0% to 2%; calcium oxide: 0% to 4%, preferring 1% to 3%; strontium oxide: 0% to 4%, preferring 0% to 2%; tungsten trioxide: 0% to 2%, preferring 0% to 1%; antimonous oxide: 0% to 1%, preferring 0% to 0.5%; the oxides account for more than 99% of the total weight; the percentage stated above is weight percentage. The cost of the optical glass provided by the invention is low. The optical glass has outstanding chemical stability, chromaticity and crystallization property. The batch production is liable to be realized by reducing the weight of the glass components due to the lower density.

The invention discloses a novel anti-electrostatic ceramic glaze as well as a preparation method and the application thereof. The preparation method comprises the following steps: carrying out continuous microwave synthesis on a common ceramic transparent glaze which mainly consists of ore materials at a temperature of 1100-1300 DEG C which is kept for 20-30 minutes, melting, directly pouring intowater for cold quenching, grinding prepared melt blocks in a ball milling tank, screening till 400 meshes so as to obtain a melt block powder, further mixing with a screened aluminum-doped zinc oxideconductive powder with150-200 meshes in a mass ratio of 20-30%, carrying out uniform ball milling mixing with 60% deionized water, at the same time adding sodium carboxymethylcellulose to regulate properties of a glaze material, so as to obtain glaze slurry, wherein the prepared glaze slurry is aged and applied to a dry ceramic blank by using a glazing method, and the glaze soaking time is 3 seconds. The ceramic blank after glaze application is dried in a drying tank, and is sintered by using a microwave continuous sintering process. The obtained ceramic glaze has the advantages of being smooth and flat in glaze surface, free of bubbles, transparent, good in chemical stability, non-toxic and environmental-friendly, low in price, and the like.

The invention relates to the technical field of coating preparation, in particular to a preparation method of a dew-point-resistant protection coating for an automobile oxygen sensor. The method comprises the following steps: A, raw material preparing: preparing solid particle materials and additives; B, slurry preparing: ball-milling and uniformly mixing micron-sized ceramic particles, metal micro powder, glass micro powder, a dispersing agent, a binding agent and an absolute ethyl alcohol solvent through a ball mill to prepare stable slurry with the viscosity range of 515-1313 mpa.s; C, pore forming; D, coating: coating the surface of an oxygen sensor substrate with the slurry obtained in the step C by spin coating, spray coating or dip-coating; E, degreasing; and F, sintering. According to the invention, the preparation method is simple, the chemical stability and thermal stability of the material are good, the production control is simple, and the coating shows good interface bonding and dew point resistance for oxygen sensor substrates of different models and specifications under a proper forming process.