30results about How to "Adjustable content" patented technology

The invention belongs to the technical field of drug delivery devices, and discloses a rapidly dissolving microneedle based on water-soluble small molecules and its preparation and application. Then, the small molecule aqueous solution is filled into a microneedle mold, dried and demolded to obtain a rapidly dissolving microneedle based on the small molecule. In the present invention, by improving the overall process flow design of the preparation method and the conditions and parameters involved in each step (such as the type of small molecule and its aqueous solution concentration, etc.), it is possible to prepare a small molecule with an extremely fast dissolution rate and good mechanical properties. Compared with the existing technology, the soluble microneedles can effectively solve the problems of the time-consuming preparation process of the polymer soluble microneedles and the slow dissolving speed of the microneedles.

The invention discloses a 6082 aluminum alloy melted with CuH and a preparation method of the aluminum alloy. The method comprises the following steps of: heating aluminum ingots or molten aluminum till complete melting; adding Si, Fe, Mn, Mg, Cr, Zn and Ti, and completely dissolving and melting the elements; preserving the heat at the temperature of between 700 and 1,000 DEG C after refining, and obtaining an alloy melt; performing degassing purification operation on the alloy melt by using nitrogen or inert gas or mixed gas of the nitrogen and the inert gas in a random ratio, and continuously introducing the gas till the reaction is finished; adding CuH powder into the alloy melt in a fluidized form together with the gas; stirring to make the CuH distributed uniformly in the alloy melt and fully reacted with the alloy melt; and standing, regulating the temperature to 680-730 DEG C, and discharging the molten alloy for casting. By the method, the defects of the properties of the conventional aluminum alloy can be overcome, the toughness, the forming property and the hardening capacity of the aluminum alloy are improved, and a high-end base material is provided for efficient deep processing.

The present invention relates to a polyurethane elastomer technique and is intended to provide a preparation method of polyurethane elastomer containing stereoregular complex crystal. The preparation method includes steps of dissolving PLLA-PEB-PLLA and PDLA-PEB-PDLA in toluene and cooling to obtain prepolymer solution; injecting toluene solution containing catalyst and chain extender (or crosslinking agent) into prepolymer solution for uniformly stirring, after the reaction, heating the solution in a vacuum oven, drying to be constant weight, and then obtaining the polyurethane elastomer containing the stereoregular crystal. The hardness of the elastomer can be crystallized, the melting point is high, and the mechanical strength and the modulus are high. By changing the mixing ratio of the two components, the content of the stereoregular complex crystal can be adjusted to facilitate the regulation of the mechanical strength, modulus and heat resistance; the hard segments of the elastomer are bio-based and biodegradable PLLA and PDLA, which are environment friendly, green and resource saving.

The invention discloses a method for preparing SSZ‑39 molecular sieves by using fluorine-modified Y-type molecular sieves as raw materials. Y-type molecular sieve is impregnated with fluorine-containing aqueous solution, dried, and roasted to obtain fluorine-doped Y-type molecular sieve; mix and stir deionized water, alkali source, template agent, and silicon source according to the ratio, and add the above-mentioned fluorine-doped Y-type molecular sieve. Sol: transfer the sol to a crystallization kettle, after the crystallization is complete, the crystallized product is filtered, washed, dried, ion-exchanged, and then roasted to prepare a hydrogen-type SSZ‑39 molecular sieve. The present invention modifies the raw material of Y-type molecular sieve by fluorine doping method, so that it can completely transform crystal to prepare SSZ-39 molecular sieve in a relatively short period of time under the condition of relatively low silicon-aluminum ratio, so that the raw material and Cost of production. The SSZ-39 molecular sieve prepared by the invention has the characteristics of short crystallization time, high crystallinity, controllable grain size, good grain dispersion, etc., and can be applied to the fields of methanol-to-olefin reaction, carrier of selective catalytic reduction catalyst, and the like.

The invention discloses a preparation method of a metal-based carbon nanotube reinforced composite material, and belongs to the field of preparation of metal-based composite materials. The method uses a series of process flows for uniformly dispersing carbon nanotubes and metal particles to obtain the metal-based carbon nanotube reinforced composite material. The method comprises the following specific steps: (1) the metal particles and the carbon nanotubes are mixed; (2) the ball grinding is performed for metal particle and carbon nanotube mixed slurry; (3) the metal particle and carbon nanotube mixed slurry is dried; (4) the ball grinding is performed for metal particle and carbon nanotube dried powder; and (5) metal-based carbon nanotube reinforced composite powder is molded through extruding. The method has such characteristics as simple preparation process, environmental protection and possession of large-scale application potential, and is suitable for such fields as aerospace and vehicle manufacturing having the high-mass and high-strength material demands.

The invention discloses a method and a device for purifying an oxidized graphene / graphene solution. The method comprises the following steps: pumping the oxidized graphene / graphene solution to be purified into a channel consisting of at least one filtering and discharging pipe, arranging the at least one filtering and discharging pipe between at least one group of negative and positive electrodes of an electrolytic tank, and forming auxiliary liquid channels between the negative and positive electrodes and the at least one filtering and discharging pipe; performing electrode migration on ions and charged particles in the oxidized graphene / graphene solution to be purified under the action of an electrical field between the negative and positive electrodes, filtering impurities out of the filtering and discharging pipes, taking away the impurities by auxiliary liquid, and pumping the residual purified oxidized graphene / graphene solution into another water tank from the at least one filtering and discharging pipe to form filtering circulation. According to the method and the device, the process is simple, the cost is low, the speed that the impurities are filtered out of the at least one filtering and discharging pipe can be increased, efficient purification of the oxidized graphene / graphene solution is realized, and the method is very suitable for industrial production.

The invention discloses a CuH-doped 6181 aluminum alloy and a smelting and casting method thereof. The method comprises the following steps of: heating aluminum ingots or molten aluminum till complete melting; adding Si, Fe, Cu, Mn, Mg, Zn and Ti, and completely dissolving and melting the elements; preserving the heat at the temperature of between 700 and 1,000 DEG C after refining, and obtainingan alloy melt; performing degassing purification operation on the alloy melt by using nitrogen or inert gas or mixed gas of the nitrogen and the inert gas in a random ratio, and continuously introducing the gas till the reaction is finished; adding CuH powder into the alloy melt in a fluidized form together with the gas; stirring to make the CuH distributed uniformly in the alloy melt and fully reacted with the alloy melt; and standing, regulating the temperature to 680-730 DEG C, and discharging the molten alloy for casting. By the method, the defects of the properties of the conventional aluminum alloy can be overcome, the toughness, the forming property and the hardening capacity of the aluminum alloy are improved, and a high-end base material is provided for efficient deep processing.

The invention discloses a stomach nourishing rice wine preparation method. According to the present invention, the rice wine prepared through the method has the sweet and delicious taste; the traditional Chinese medicine extraction liquid is added, and the content of the traditional Chinese medicine extraction liquid can be adjusted according to the specific situation of the drinker; and the good health effect can be achieved.

The invention discloses a system device and a method for synchronously realizing organic waste disposal and synthesis gas quality improvement. A core part of the system device is an anaerobic synthesis integrated reactor, wherein the anaerobic synthesis integrated reactor sequentially comprises a sludge discharge area, an aeration buffer area, a gas liquid mixing area, a microbial synthesis reaction area, a gas solid liquid separation area and a gas phase pressure stabilizing area from bottom to top. By adopting the system device, organic waste disposal and recycling production of methane in the anaerobic synthesis integrated reactor can be realized, and methanation quality improvement of synthesis gas also can be realized simultaneously. Compared with the prior art, the system device and the method have the advantages that by adopting a microbial technology, while the synthesis gas is led into the anaerobic synthesis integrated reactor to dispose organic waste, gas quality improvement and purification are realized, under normal temperature and normal pressure, most components, except methane, in the synthesis gas can be converted into methane, and a new method is provided for solving the problems of resource shortage, environment pollution, unreasonable energy structure, and the like in the energy field in China.