38results about How to "Easy to prepare and effective" patented technology

The invention relates to strong-hydrophobic porous carbon nanofiber and a preparation method thereof, and belongs to the technical field of porous carbon fiber. The preparation method comprises the following steps: adding thermosetting phenol resin and high molecular weight linear polymers into organic solvent with two proportions to be mixed until the thermosetting phenol resin and the high molecular weight linear polymers are fully dissolved, performing electrostatic spinning on the solution to form phenolic resin fiber, and carrying out curing and carbonizing to obtain the hydrophobic porous carbon nanofiber. The porous carbon nanofiber and the preparation method have the advantages as follows: the diameter, the pore structure and the hydrophobicity of the fiber can be adjusted and controlled through the change of the proportions of the solvent, the prepared carbon nanofiber has good flexibility, a developed pore structure and strong hydrophobicity, and is more conductive to practical application.

The invention relates to a supramolecular polymer material constructed by doubly bridging sulfonated calixarenes. The chemical formula of a repetitive unit is C88H78N4O34S8, which is formed by dual-ethyl bridging sulfonated calix [4] arene (bisSC4A*8Na+) and diethylene three ether oxygen chain bridging methyl viologen (bisMV4+*4I-), wherein the bisSC4A is taken as a large ring host body, the bisMV4+ is taken as a guest body, and the supramolecular polymer with a host-guest inclusion structure is constructed through host-guest bonding. The invention has the advantages that the polymer material can be prepared by utilizing strong bonding of sulfonated calixarenes to the viologen guest body through a simple and convenient solution mixing method; and the method has the advantages of simplicity in operation and high productivity, is a convenient and effective method for preparing the polymer material and can detect the formation of supramolecular polymer through fluorescence, can effectively improve the water solubility and viscosity of calixarene class supramolecular polymer at the same time, and has a broad application prospect in the field of materials.

The invention discloses a preparation method of a single crystalline silicon solar cell with a back polished structure. The preparation method comprises the following steps of: polishing a silicon wafer with a high-concentration alkaline solution, forming a polishing structure on the front and the back of the silicon wafer, forming a mask layer on the back of the silicon wafer, texturing the silicon wafer with a low-concentration alkaline solution, under the protection of the mask, forming a pyramid textured structure on the front of the silicon wafer, cleaning the silicon wafer before diffusion, removing the mask, retaining the polished structure on the back of the silicon wafer, performing phosphorus diffusion on the silicon wafer surface to form an N+ layer, and preparing electrodes. The method can be used to simply, conveniently and effectively prepare the single crystalline silicon solar cell with the back polished structure, and further improves the photoelectric conversion efficiency of the solar cell.

The invention discloses a Chinese medicinal preparation for treating osteoporosis. The preparation is prepared from the following raw materials by weight: 9 grams of achyranthes bidentata, 15 grams of poria cocos, 10 grams of bighead atractylodes rhizome, 10 grams of psoralea, 12 grams of eucommia bark, 12 grams of Chinese angelica, 12 grams of Szechuan lovage rhizome, 10 grams of astragalus root, 10 grams of cassia bark, 10 grams of myrrh, 10 grams of epimedium, 10 grams of angelica pubescens, 10 grams of medlar, 6 grams of earthworm, and 6 grams of licorice. The Chinese medicinal preparation for treating the osteoporosis is reasonable in formula, has the effects of tonifying kidney, strengthening bone, nourishing qi to invigorate spleen and promoting blood circulation to nourish qi, is convenient to prepare, exact in treatment effect and quick in response, and does not have toxic or side effect.

The invention provides phosphorous acid titanium with a three-dimensional open-framework structure and a preparation method thereof and belongs to the technical field of phosphorous acid titanium with a three-dimensional open-framework structure. The preparation method is characterized in that an open-framework crystal compound of the phosphorous acid titanium without an organic template is synthesized by adopting a strong acid method in a hydrothermal system, the morphology of a product is regulated and controlled by adjusting the quantities of phosphorous acid and hydrofluoric acid in reaction gel, and the phosphorous acid titanium compounds with the three-dimensional open-framework structure, which have the identical structure and are different in morphologies, are synthesized. The phosphorous acid titanium compound does not contain an organic template agent. Compared with other metal phosphorous acid salts, the phosphorous acid titanium compound has relatively good heat stability, thus favorable conditions are provided for the research of the property of the phosphorous acid titanium compound. The photovoltage research shows that the compound has the property of a p-type conductor. The invention has the beneficial effects of providing a simple, convenient and effective method for preparing the phosphorous acid titanium crystal material with the open-framework structure.

The invention relates to a biological composite flocculating agent for adsorbing heavy metal ions in heavy metal wastewater and applications thereof. The composite flocculating agent is prepared by compounding polyglutamic acid, polymeric aluminum chloride, and poly(aspartic acid) according to a weight ratio of 1: 4-6: 15-17. When the flocculating agent is used, at first, the pH value of heavy metal wastewater is adjusted to 6-9; then the biological composite flocculating agent is added into the heavy metal wastewater, the system is vibrated and stirred for 15 to 20 minutes, after vibration and stirring, centrifugal separation or static settlement is performed, and the flocculent precipitates that adsorb heavy metal ions are recovered and processed. The adsorbing performance and application range of the biological composite flocculating agent are both enhanced. The processing mode is simple and environmentally friendly. Furthermore, polyglutamic acid and poly(aspartic acid) can be easily degraded by organisms and will not generate secondary pollution; the preparation and application are convenient, and the cost is low.

The invention relates to a composition for organic EL (Electroluminescent) luminophor orientation controlling, an organic EL luminophor orientation controlling film, and an organic EL element and a fabricating method thereof. The invention aims at providing a composition for organic EL luminophor orientation controlling with an excellent light orientation sensitivity, wherein the luminescent efficiency stability is obtained according to the high heat resistance, and the organic EL luminophor orientation controlling film can be formed; the controlling film can exert excellent polarized luminescent efficiency according to high level anisotropic orientation of the organic EL luminophor. The invention relates to a composition for organic EL luminophor orientation controlling, comprising a compound [A] containing an optical orientation group with a cinnamic acid structure. The compound [A] is preferably polysiloxane compound; furthermore, the optical orientation group with the cinnamic acid structure is preferably at least one selected from the group consisting of the group of the compound shown as the following formula (1) and the group of the compound shown as the following formula (2).

The invention provides a fiber hybridized particle and a polymer matrix composite material. The fiber hybridized particle comprises nanofiber and nanoparticles which are loaded on the surface of the nanofiber; surface coverage rate of the nanoparticles on the nanofiber is 5-100%; the diameter of the nanofiber is 50-300nm, and the length is 1-100[mu]m; the particle size of the nanoparticles is equal to or less than the diameter of the nanofiber; interface connection effects of the nanofiber and the nanoparticles are physical absorption and/or chemical bond combination. The polymer matrix composite materials comprises polymer and the fiber hybridized particles which are filled in the polymer. The fiber hybridized particles solve the problems of agglomeration and winding of granular and fibrous nano-materials, and endow multiple functions of the fibrous hybrid nano-material multiple functions, so that the polymer matrix composite material with controllable performance and multiple functions is obtained in a convenient and effective mode.

The invention discloses platinum nano-particles and a preparation method thereof. The preparation method comprises the following steps: 1) mixing a methylbenzene solution dissolved with tetraoctyl ammonium bromide and a dendritic polymer with an aqueous solution dissolved with potassium chloroplatinite, after violently stirring for 0.5-2 hours at a room temperature, standing for layering and collecting supernatant liquid; and 2) transferring the supernatant liquid into a reactor, and then reacting for 48-95 hours in a hydrogen atmosphere to obtain the platinum nano-particles which are centrifugally separated and collected. According to the preparation method of the platinum nano-particles, hydrogen which is low in price and is easily obtained is taken as a reducing agent, reaction is carried out at the room temperature, and energy consumption caused by heating and the like is avoided. In addition, the sizes of the prepared platinum nano-particles are close to the size of the dendriticpolymer, the sizes of the platinum nano-particles are controllable in a certain range, and thus, the size range of the platinum nano-particles which are prepared by taking the dendritic polymer as a template is expanded.

The invention relates to an auxiliary alignment apparatus for the deviation of an exposure image, comprising a movement platform, an image system and a processing system which is connected with the movement platform and the image system. The image system moves by controlling the movement platform, so as to acquire image data of a test printing plate; the image data of the test printing plate comprises information of a plurality of test marks; the processing system stores the image data of a target printing plate and the image data of an ideal printing plate; the image data of the ideal printing plate comprises information of a plurality of ideal marks; the processing system generates alignment data according to the information of the a plurality of ideal marks and the information of the a plurality of test marks, and can generate the image data of a real printing plate according to the alignment data and the image data of the target printing plate. By adopting the device, the printing plate with the distortionless image can be made conveniently and effectively under the premise that the processing difficulty of a drumhead is not increased, thus ensuring the imaging quality.

The invention discloses a human adipose tissue acellular extracellular matrix as well as preparation and application thereof, and relates to the technical field of biomedical materials. The method comprises the following steps: S1, preparing concentrated nano fat; s2, thoroughly crushing fat cells; and S3, removing the chemical reagent. Compared with a traditional method, the principle is that the contact time of chemical and biological reagents is shortened, and the physical treatment time is prolonged. Compared with a traditional method, the method has the advantages that the preparation time is greatly shortened, the operation is simplified, and particularly, the treatment of isopropanol and pancreatin is completely omitted. The obtained extracellular matrix retains more types of proteins, more types of proteins promoting lipogenesis are achieved, the middle and long-term vascularization and lipogenesis capacities after transplantation are higher than those of a traditional method, and the method has wide application prospects in experimental research and clinical treatment in the future.

The invention relates to a preparation method for synthesizing dibutyl magnesium by taking 2-chlorobutane, magnesium powder and n-butyl lithium as raw materials. The 2-chlorobutane, the magnesium powder and the n-butyl lithium are taken as raw materials, and the dibutyl magnesium is synthesized under the condition of no water and no oxygenated solvent; the reaction process comprises: under the protection of N2, the magnesium powder is mixed with an evocating agent, then the mixture is put in a reaction kettle for heating and stirring and is added with a small amount of 2-chlorobutane solution slowly; after evocating reaction, under the condition of thermal insulation, the 2-chlorobutane solution is added into the reaction kettle slowly to generate a Grignard reagent by reaction; cooling and temperature reduction are carried out, n-butyl lithium hexane solution is added rapidly; after the reaction under the condition of thermal insulation is carried out, a solvent is obtained by distilling and separating; cooling and filtering are carried out, thus obtaining the dibutyl magnesium; in the preparation process, the mixture ratio of each raw material is as follows: the mole ratio of the magnesium powder to 2-chlorobutane to n-butyl lithium is equal to 1.0-1.2: 1: 1. The preparation method has the advantages of simple and easy technique, no pollution, being investment-saving, high magnesium powder conversion rate and product yield, etc.

The invention discloses a bean product coagulating agent and application thereof. The bean product coagulating agent is prepared by the following steps: mixing fruits with 400 to 420 parts by weight of water and decocting an obtained mixture at high temperature to obtain a decocted product, wherein the fruits comprises the following ingredients in parts by weight: 10 to 15 parts of haw, 8 to 10 parts of sea-buckthorns, 5 to 10 parts of oranges and 10 to 20 parts of lemons; filtering the decocted product to obtain a filtrate; and mixing and coagulating the filtrate with 2 to 4 parts by weight of citric acid to obtain the coagulating agent. The bean product coagulating agent and a method for producing bean products provided by the invention can be used for producing the bean products conveniently and efficiently, are simple in operation, easy to realize standardization and industrialization, low in cost and high in yield. The obtained bean products have good water holding capacity and good taste, keep original fragrance of raw materials of the bean products, and are free from residual odor.