8results about How to "The preparation method is reasonable" patented technology

The invention belongs to the technical field of traditional Chinese medicine, and particularly discloses a traditional Chinese medicine composition for promoting blood circulation, dredging vessels, tonifying kidney and promoting intelligence and a preparation method thereof, and the traditional Chinese medicine composition is prepared from red peony root, ligusticum wallichii, prepared rhizome of rehmannia, dogwood, semen brassicae, polygala tenuifolia, rhizoma acori graminei, angelica sinensis, poria cocos and other raw medicinal materials. The whole formula adopts the treatment method of promoting blood circulation to remove meridian obstruction, tonifying kidney and promoting intelligence, and especially for senile vascular dementia, the cognitive impairment of rats with vascular dementia and clinical patients can be remarkably improved. The invention further provides a preparation and a preparation method of the traditional Chinese medicine composition, and the whole process preparation method is simple and convenient and easy to popularize.

The invention discloses high-dosage rubber powder modified asphalt and a preparation method thereof, and the rubber powder modified asphalt is prepared by adding 22-30 parts by weight of modified rubber powder into 100 parts by weight of road petroleum asphalt, the modified rubber powder is prepared from the following components in parts by weight: 85 to 95 parts of common rubber powder, 3 to 6 parts of phenolic resin, 0.6 to 1.2 parts of microcrystalline wax, 2 to 5 parts of naphthenic oil, 0.2 to 0.6 part of antioxidant and 0.2 to 0.6 part of EVA (Ethylene Vinyl Acetate). The preparation method comprises the following steps: (1) preparing the modified rubber powder; and (2) preparing the modified asphalt cement. According to the invention, co-melting and blending of the rubber powder and the asphalt are improved, the mixing amount of the rubber powder in the rubber asphalt can be obviously increased, the pavement and durability are greatly improved, the production cost and environmental pollution of the asphalt mixture are effectively reduced, and the asphalt mixture has economic and social double benefits, is simple in preparation process and has relatively high practical application value.

The application provides an edible active coating for preventing dry consumption under an ultralow temperature condition and a preparation method, and belongs to the technical field of active packaging. The application combines double-layer coatings, inhibits free radical oxidation generated by freezing through an inner antioxidant, and effectively locks water and blocks external oxygen permeation through the synergistic effect of an outer high-barrier structure, thereby significantly improving the freezing preservation effect of food, and the raw materials are natural and safe, the preparation method is reasonable, and the application has good practical application value. The application solves the problems of poor effects of edible freezing protection coatings suitable for extremely cold environments in the prior art.

The application discloses a kind of buried copper block circuit board and its manufacturing method, the manufacturing method includes: the two outer layers of core plate are copper foil layer, and window position A is provided on the non-line area of one outer layer;Core plate is double-sided inner layer pattern production, to make inner layer circuit pattern and pad on the two outer layers of core plate respectively, and make a plurality of flow blockings on one outer layer of core plate, which are surrounded outside window position A;The insulating layer is covered on the two outer layers of core plate, and window position B is provided on the insulating layer adjacent to flow blocking, which is opposite to window position A;Based on window position, insulating layer and core plate are windowed;After the copper block gap with rough surface is placed in window, it is compressed and handled, and in the process of compression, the flow of colloid in window is controlled by flow blocking, so that copper block is firmly combined with insulating layer and core plate together.The manufacturing method is simple and reasonable, easy to implement, the reliability and stability of the obtained circuit board product are high, and the market demand is met.

The application provides N-(3,5,6-trimethylpyrazine-2-methylene)-huperzine A and a synthetic method and application thereof. A structural formula is as follows: a preparation method thereof comprises the following steps: (1) carrying out bromination reaction on tetramethylpyrazine to obtain 2-bromomethyl-3,5,6-trimethylpyrazine; (2) carrying out condensation reaction on huperzine A and 2-bromomethyl-3,5,6-trimethylpyrazine to obtain N-(3,5,6-trimethylpyrazine-2-methylene)-huperzine A. The compound not only has acetylcholinesterase inhibition effect, but also can prevent brain nerve tissue aging and cell apoptosis by eliminating ROS and free radicals and resisting oxidative damage, so as to intervene in the development of Alzheimer's disease.

The application discloses a low-temperature high-strength neutral soldering paste and a manufacturing method thereof. The soldering paste has the following raw material formula in percentage by weight: 87-92% of tin-based alloy powder, 3.5-5% of activating agent, 0.5-1.2% of reinforcing agent, 0.5-2% of thixotropic agent and 2-6% of solvent. The alloy components in the tin-based alloy powder and their percentage by weight are as follows: 90-95% of Sn, 2-5% of Ag, 0.2-1% of Cu and 2-6% of Bi. The activating agent is composed of dimethylol propionic acid, sodium phosphate and ammonium fluoroborate according to a weight ratio of 1: (0.1-0.4): (1.5-2). The reinforcing agent comprises reinforcing alumina particles subjected to metallization treatment, and the reinforcing alumina particles have a nanoscale particle size. The soldering paste has the characteristics of low welding temperature, good wettability, improved solder joint shear strength, neutral no post-welding corrosion and the like, and is suitable for precise welding scenes.

The present invention discloses a three-dimensional heat spreader and a manufacturing method thereof, the manufacturing method comprising: providing a shell with a closed shell structure, a reflux cavity is provided in the inner cavity of the shell, and a through hole is provided on the cavity wall of the reflux cavity; a liquid absorbent core is manufactured by slurry manufacturing, coating, high temperature treatment, cutting and shaping processing steps, the porosity of the liquid absorbent core is 40% to 90%, the holes in the liquid absorbent core are through holes with a micro-nano aperture, and the through holes are connected to form a channel for rapid flow of a liquid phase medium; after the liquid absorbent core is placed in a preset position in the inner cavity of the shell, it is sintered and combined into one body to obtain a three-dimensional heat spreader in which the channel is connected and communicated with the reflux cavity. The manufacturing method is simple and reasonable, and can realize continuous and large-scale production. The obtained three-dimensional heat spreader has high three-dimensional heat conduction efficiency, miniaturized structure, high finished product yield, good reliability, and long service life, and has important practical value and broad application prospects.

The invention discloses a bipolar plate, a manufacturing method thereof and a fuel cell, and the manufacturing method of the bipolar plate comprises the following steps: selecting metal powder with conductive and heat-conducting properties, compounding and mixing the metal powder with a binder, a solvent and a pore-forming agent, and then carrying out high-temperature treatment to prepare a functional layer with a porous network structure; and selecting an ultra-thin metal layer, stacking the ultra-thin metal layer and the functional layer, and performing high-temperature sintering to obtain the bipolar plate. The manufacturing method of the bipolar plate is simple and reasonable, automatic, large-scale and efficient processing production can be realized, and the obtained bipolar plate has the characteristics of good heat conductivity, high electric conductivity, high mechanical strength, high air tightness, capability of meeting the two-way transmission flow requirements of uniform gas inflow, liquid outflow and non-interfering gas-liquid flow, and the like. And the use requirements of the proton exchange membrane fuel cell are well met.