59results about How to "Strong structural design" patented technology

The invention belongs to the field of fine chemical engineering production technologies, and discloses a modified monomer and organic modified polysiloxane prepared thereby. Firstly, dehydrogenation reaction is carried out on a monomer containing Si-H bond and a compound containing hydroxyl (-OH) so as to synthesize a modified monomer, then in the presence of a catalyst and/or end-capping reagent, equilibration reaction is carried out on the modified monomer and common organosilicone monomer so as to synthesize the organic modified polysiloxane. The prepared organic modified polysiloxane can be used as cosmetic additive, lubricant additive and brake oil additive. The preparation method is simple, is easy to operate and control, and less erodes the equipment; the prepared organic modified polysiloxane is well compatible with organic compounds and/or water soluble compounds, and also can be used as a reaction intermediate for synthesizing high molecular materials continuously, thus having extensive use.

The invention provides a method of a fluorescent star-like polymer which serves as a nucleic acid material carrier and is applied to live culture of cells and insects. A perylene derivative and an analogue thereof are taken as fluorescent nucleotides, and fluorescent star-like polymers which are in different generations and carries cation groups are prepared by adopting a 'divergent method'. The fluorescent star-like polymer has good biocompatibility and low cell toxicity, amino groups with positive charges can be carried at the periphery of a molecule, can enter live culture cells and can be combined with DNA or RNA with negative charges to form a stable complex, and the stable complex is taken as a carrier to carry and protect exogenous nucleic acid to enter live culture cells. Mixture of the carrier and the DNA or RNA is fed in food or injected into a body cavity, the carrier can quickly carry the DNA or RNA to enter cells of a live insect in vivo, and effect exertion of nucleic acid and normal expression of genes interfering insect targets are facilitated, so that insects are abnormal in development until the insects fall ill or die.

The invention discloses a synthesis method of a spiropyrane small-molecule fluorescent probe with extreme acid/extreme alkaline switch response and an application of the spiropyrane small-molecule fluorescent probe. By virtue of the synthesis method, naphthalene nucleus spiropyrane with two carboxyl groups and a phenolic hydroxyl group is synthesized by carrying out modification on three loca of spiropyrane, wherein the naphthalene nucleus spiropyrane has the characteristic of reversible switch type response on pH values of extreme acid/extreme alkaline; when the pH value is smaller than 1.0, red fluorescence is represented; when the pH value is 1.0-12.0, fluorescence is represented; when the pH value is greater than 12.0, blue-green fluorescence is represented. The synthesized spiropyrane small-molecule fluorescent probe also has the characteristics of being high in optical, thermal and chemical stability and structural designability, and excellent in biocompatibility and cell labeling property; meanwhile, the synthesized spiropyrane small-molecule fluorescent probe is safe and low in low toxicity, and is capable of smoothly entering bacteria for bio-labeling, implementing the pH response of extreme acid/ extreme alkaline as same as that of solutions in organisms; furthermore, the synthesized spiropyrane small-molecule fluorescent probe can be used as a multifunctional cell fluorescence labeling dye and can be applied to scientific research and gene diagnosis in the field of biological medicines.

The invention provides a preparation method of a microarray structure on the basis of DLP (digital light processing) technology and chemical vapor deposition, relating to a preparation method of a porous material. The method comprises the following steps: 1. preparing a photosensitive resin array structure by using a DLP forming device; 2. carrying out chemical vapor deposition on the structure to prepare a surface made of metals, ceramics or any other material; and 3. removing the photosensitive resin at high temperature under the protection of inert gas. The porous structure prepared by the method can be used in the aspects of heat dissipation, energy absorption and the like, has relatively high mechanical properties under the condition of low density, and has very high structural designability.

The invention relates to compound preparation and protein molecule carrier, and specifically discloses a fluorescent star polymer, a preparation method and applications thereof. Perylene derivatives and analogs thereof are taken as the fluorescent core of the fluorescent star polymer. Fluorescent star polymers with amino acid characteristic groups in different generations are prepared through a divergence method. Because the exteriors of fluorescent star polymer molecules carry special amino acid groups, the fluorescent star polymer molecules can be easily recognized and swallowed by live cultured cells. Moreover, through non-covalent bonds, fluorescent star polymers can be bonded with protein molecules with negative charges or positive charges to form stable complexes. The provided fluorescent star polymer can be used as a carrier, can protect and carry exogenous protein molecules, and can successfully introduce exogenous protein molecules into live cultured cells. By feeding the insects, insect-killing protein molecules can be introduced into the cells of live insects by the fluorescent star polymer, the toxin of protein molecules can be fully exerted, the growth of insects is retarded, or the insects are killed by the toxin.

The invention provides a nanofiber foam based oil gas trapping device and a preparation method thereof. The nanofiber foam based oil gas trapping device is characterized in that: it includes an gas collection pump in connection with a gas delivery pipe, the gas delivery pipe is connected to an oil-gas trapping assembly, the oil-gas trapping assembly is connected to an exhaust pipe and a collection pipe, and the collection pipe is connected to an oil substance recycling bin. Specifically, the oil-gas trapping assembly includes a protective box, and the protective box is internally provided with a nanofiber based foam material. The nanofiber foam based oil gas trapping device has the characteristics of simple preparation process, low cost, convenient operation, integrated oil-gas adsorption recovery, high efficiency and continuity, and has wide application at gas stations, oil plants, wharfs and other sites, and in manufacturing industry, surface coating industry and other fields.

The invention discloses a water-soluble hyperbranched fluorescent polymer and a preparation method thereof, belonging to the field of hyperbranched polymer synthesis technology. The water-soluble hyperbranched fluorescent polymer serves as a genetic carrier for efficiently and quickly transfecting viable cells. An amino fuctional group-carrying hyperbranched fluorescent polymer is prepared by adopting a multi-step feeding method through a Michael addition reaction. The hyperbranched fluorescent polymer synthesized by adopting the method has excellent water solubility and biocompatibility, can enter viable cells, and can be combined with electronegative DNA or RNA through electrostatic acting force, and therefore as a genetic carrier, the hyperbranched fluorescent polymer is capable of carrying an exogenous nucleic acid member DNA or RNA into cells. The preparation method has the advantages of simple and convenient synthesis, high efficiency, simple product purification and the like, and the synthesized water-soluble hyperbranched fluorescent polymer is safe and low-toxicity, excellent in water solubility, and high in fluorescent quantum yield; and as an efficient genetic carrier, the water-soluble hyperbranched fluorescent polymer can be applied to scientific research and genetic therapy in the biomedical field,.

The invention discloses a mold plasma 3D printing device and 3D printing method. The device is composed of a monitor system, a plasma beam machining system, a horizontal printing table for containing a mold to be formed and a temporary fixed piece. The plasma beam machining system is composed of a plasma generator, an air supply device, a powder feeding device and a printing position adjustment device. The printing position adjustment device comprises a horizontal movement device and a printing distance adjustment device. The monitor system comprises a horizontal movement controller, a temperature detection unit, a distance detection unit and a printing distance adjustment controller, and a temperature adjustment and control device is formed by the temperature detection unit and the printing distance adjustment controller. The method comprises the steps that firstly, a three-dimensional model is obtained, and layering slicing treatment is carried out; secondly, a scanning path is filled; thirdly, a printing path is obtained; and fourthly, printing is carried out layer by layer from bottom to top. The device is reasonable in design, easy and convenient to operate, high in efficiency and good in use effect, the forming process is directly carried out in the atmospheric environment, and a formed mold is good in quality.

The invention discloses a molding preparation method for a tackified preform of a fiber layered-connection structure. According to the molding preparation method for the tackified preform of the fiber layered-connection structure, the tackified perform is woven according to a mold through a knitting method. The molding preparation method for the tackified preform of the fiber layered-connection structure is applicable to preparation of the tackified perform which is high in thickness, large in size and complex in shape; the molding preparation method ahs the advantages of being great in structural design performance, good in tackified perform homogeneity, excellent in mechanical property, high in fiber volume fraction, complete in block construction, continuous in yarn bundle, stable and controllable in dimension, high in preparation precision and suitable for preparing tackified perform complex in shape.

The invention discloses die plasma 3D rapid molding equipment and molding method. The equipment is composed of a monitoring system, a plasma beam machining system, a horizontal printing table for containing a to-be-molded die and a temporary fixing piece; the plasma beam machining system is composed of a plasma generator, an air supply device, a wire feeding device and a printing position adjusting device; the printing position adjusting device comprises a horizontal movement device and a printing distance adjusting device; and the monitoring system comprises a horizontal movement controller, a temperature detecting unit, a distance detecting unit and a printing distance adjusting controller, and a temperature regulation and control unit is composed of the temperature detecting unit and the printing distance adjusting controller. The molding method includes the steps of (1) three-dimensional model obtaining and layered slicing treatment; (2) scanning path filling; (3) scanning path obtaining; and (4) layer-by-layer printing from bottom to top. The die plasma 3D rapid molding equipment is reasonable in design, easy and convenient to operate, high in efficiency and good in using effect, the molding process is directly executed under the atmospheric environment, and the quality of the die is good.

The invention discloses a yarn distribution method of fiber layer connected fabric. Single-eye heddles are adopted for yarn distribution, heddle eyes of the single-eye heddle are in one-to-one correspondence with each warp of the fabric; during yarn distribution, warp 1 in the first column of warp corresponds to heddle 1 in the first group of single-eye heddles; warp 2 in the first column of warpcorresponds to heddle 2 in the first group of single-eye heddles; ...; after yarn distribution is completed for the first column, the corresponding method of adjacent one column of warp and heddle isthe same as that of the first column; according to the method, other warp is distributed with the same method; the single-eye heddles are arranged in a rectangular manner to form a heddle mechanism, one end of each single-eye heddle is connected with a heddle lifting mechanism above the heddle mechanism, and the other end is connected with a return spring at the lower end; the warp is guided by awarp let-off system one by one, penetrates through the heddle eyes of the corresponding single-eye heddles one by one and sequentially penetrates through reed dent gaps of reeds in a whole column manner. The problems of small opening height, low weaving efficiency, poor structure designability and the like caused by traditional multi-eye heddle yarn distribution manners are solved.

The invention discloses an electric arc additive manufacturing method based on reverse compensation. The method comprises the following steps of: manufacturing additive pieces on two sides of a substrate; dispersing and releasing residual stress on the substrate through heat input on different sides; in the two cladding deposition processes, ensuring that the deformation directions are opposite and are mutually counteracted; and in an allowable deformation range, performing reverse compensation on the residual stress on the substrate. Control over thermal stress and deformation is achieved, cladding is conducted on two sides of the substrate in a staggered mode, the front layer preheats the rear layer, the rear layer conducts post-heating on the front layer, residual stress is released, and cladding deformation is reduced.

The invention discloses a shape memory alloy hollow micro-lattice material and a preparation method thereof. The formula comprises an equal atomic ratio of NiTi alloy, and the weight percentage of the component is 100% of NiTi alloy. The preparation method comprises the following steps of: step 1, polymer mask processing; step 2, NiTi alloy film sputtering forming; step 3, hollow micro-lattice material obtaining; and step 4, NiTi alloy hollow micro-lattice material obtaining with a memory effect. The hollow micro-lattice material prepared by the preparation method disclosed by the invention is high in structural designability; the method for obtaining the shape memory alloy hollow micro-lattice material is simple, convenient and easy to implement, and the thickness of a film can be controlled by controlling the sputtering time, so that the regulation and control of the thickness of a tube wall between 50nm and 20 microns can be realized; the micro-lattice material prepared by the preparation method disclosed by the invention has the advantages of light weight, superelasticity, outstanding memory effect, high damping, energy absorption and biocompatibility; and compared with other deposition methods, the preparation method disclosed by the invention has the advantages of wide material selection and better film uniformity by using a magnetron sputtering technology.

The invention provides a dental ceramic material and a preparation method and an application thereof, and belongs to the field of dental ceramic materials. The preparation method includes the following steps: mixing zirconia ceramic powder and an inorganic phosphate solution to obtain ceramic slurry; carrying out 3D printing or injection molding on the ceramic slurry to obtain ceramic body; and dehydrating and sintering the ceramic body in order to obtain the dental ceramic material. The dental ceramic material of the invention adopts the inorganic phosphate as a binder, does not undergo thermal decomposition under the condition of ensuring good bonding performance, changes from an amorphous phase to a crystalline phase when reaching phase transition temperature, which means the inorganicphosphate is converted into a corresponding crystalline phase during the sintering process, so as to further increase the solid content and compactness of bioceramic. In addition, in the invention, the zirconia ceramic powder has good biocompatibility and has lower size shrinkage compared with ceramic prepared by conventional organic binder ceramic slurry.

The invention discloses a gradient pressure-torsion energy storage and vibration reduction structure. The structure is characterized in that a plurality of pressure-torsion unit cells can rotate the load direction when being subjected to load, the pressure-torsion unit cells are arranged to form a layer of energy storage and vibration reduction unit in an array, and a plurality of layers of energy storage and vibration reduction units are sequentially overlapped to form the gradient pressure-torsion energy storage and vibration reduction structure; each pressure-torsion unit cell sequentially comprises an upper face plate, a plurality of pressure-torsion structures, a lower face plate and a bottom plate from top to bottom, and the pressure-torsion structures are arranged between the upper face plates and the lower face plates in an overlapped mode. Impact energy is converted into structure rotation energy and counterweight rotation energy, the energy absorption efficiency of a traditional structure is greatly improved, meanwhile, the structure can further absorb the rotation energy through a transmission means in the rotation process, the structure is high in designability, and the rigidity and the strength of the structure can be improved by increasing the number of inclined rods of the unit cells, so that the structure has a wider application space.

The invention provides a nanofiber foam-based protein adsorptive separation device and a preparation method thereof. The nanofiber foam-based protein adsorptive separation device is characterized by comprising an open pore protection cover, wherein the open pore protection cover is internally provided with a nanofiber foam-based protein adsorption material; a liquid collection capillary network is arranged in the nanofiber foam-based protein adsorption material; the liquid collection capillary network is connected with a main infusion tube; and the main infusion tube is connected with a liquid collection tank through a pump. The nanofiber foam-based protein adsorptive separation device has the advantages of simple preparation process, low production cost, convenience in operation and strong expandability; and the protein adsorption material has the advantages of high mass transfer rate, high adsorption rate, high adsorption capacity, high protein dissolution rate and good pressure resistant property and the proteins in the solution can be intensively adsorbed onto the material through a direct extraction manner to realize the batch efficient continuous separation and adsorption of the protein-containing solution; therefore, the nanofiber foam-based protein adsorptive separation device has wide application prospect in the fields of biological pharmacy and the like.