153results about How to "Reduce regularity" patented technology

The invention discloses porous ceramsite made of low-silicon iron tailings and a preparation method of the porous ceramsite. The porous ceramsite is prepared from, by weight, 75-90 parts of low-silicon iron tailing powder or low-silicon iron tailing pulp, 5-20 parts of pore-forming agents and 1-8 parts of clay, wherein the SiO2 content in the low-silicon iron tailing powder or low-silicon iron tailing pulp is lower than 40%. The method includes: weighing and mixing the iron tailings, the pore-forming agents and the clay, and granulating the mixture into green balls; and after the green balls are dried, calcinating the dried green balls for 40-60min at the temperature of 1100-1180 DEG C, so that the ceramsite made of the iron tailings is obtained. By the method, the porous ceramsite conforming to architecture application and water treatment application can be prepared respectively. The ceramsite prepared by the method has the advantages of high strength and apparent porosity, low density, good thermal insulation property, high cost performance and the like, and can be used for preparing various light, sound-insulation and thermal-insulation materials or used as light building aggregate, water treatment biological carriers and the like.

Provided is a soft flexible oral appliance having protuberances that mimic naturally occurring dental Tori. An upper, palatial appliance and a lower, mandibular appliance may be used in conjunction or separately to alleviate a variety of disorders, improve facial tone, and increase physical performance. The appliances are lightweight, thin, and do not prohibit normal speech patterns when in use. Small protuberances are strategically molded along key surfaces of each appliance to stimulate nerves in the tongue and affect forward protrusion. Forward positioning of the tongue dilates the airways of the throat improving breathing while the use is sleeping, playing sports, or talking. It also reduces bruxing, or grinding of the teeth. A method is further provided, for adding protuberances to other types of oral appliances, thereby conferring some of the benefits listed above on appliances originally intended for other dental uses.

The invention relates to polyimide containing a benzimidazole unit and a preparation method thereof. The polyimide has the following structural formula. The preparation method comprises the following steps of: firstly, performing the reaction on 2,6-disubstituted aniline and aldehyde under the acidic condition to generate a diamine compound 3,3',5,5'-tetra-substituted aromatic diamine; and then, after mixing the synthesized aromatic diamine and a heterocyclic diamine monomer 6-aminophenyl-2-aminobenzimidazole according to a certain ratio, performing the reaction on the mixture and a dianhydride monomer in an organic solvent to obtain the polyimide. The polyimide provided by the invention has excellent solubility property, can be dissolved in conventional solvents such as NMP (N-methyl-2-pyrrolidone) and DMAc (dimethyl acetamide), has excellent heat resistance and mechanical property and has excellent thermal properties of glass-transition temperature of over 410 DEG C, decomposition temperature of over 500 DEG C and the like.

The invention discloses a polymer composite material solid electrolyte and a preparation method thereof. The method employs an inorganic nano-particle and a lithium salt to fill an aqueous polymer and enables the polymer to be crosslinked with polyisocyanate for preparing the solid electrolyte, and belongs to the technical field of lithium ion batteries. The technical scheme is characterized in that the method is based on a water solution pouring process, 60%-80% by mass of the aqueous polymer, 10%-40% by mass of a lithium salt, 2.0%-8.0% by mass of an inorganic nanometer filling material and 2.0%-8.0% by mass of a polyisocyanate cross-linking agent are employed for obtaining the electrolyte. The polymer composite material prepared by utilizing the method has the characteristics of high ion conductivity, excellent mechanical properties and short relaxation time, and the forming technology of the material is simple and accords with green environment-protection requirements.

The invention relates to the field of lithium ion battery materials, and in particular relates to an adhesive and a lithium ion battery with the same. The adhesive is a polymer containing structure units shown as the formulas I, II, III and IV, and the number-average molecular mass of the adhesive is 0.5 million to 1.2 million. The invention also relates to the lithium ion battery, comprising a positive electrode piece, a negative electrode piece, a separator and electrolyte, wherein the positive electrode piece comprises the adhesive. With the adhesive, the flexibility of the positive electrode piece can be improved greatly, so that the problems of processing, battery performance and the like, caused by crisp electrode pieces, can be avoided, the compaction density can be enhanced, and the energy density of the battery can be further improved.

The present invention relates to a method, a system and a computer-readable medium storing computer-executable components in connection with transfer of information data to a recipient. The invention is based on the idea that generation of random number data and the calculation of digital signatures are performed before information data is accessible to a digital pen. Since asymmetric encryption of data is a demanding operation for said digital pen to perform in terms of processing power, a lot of time can be saved if the generation of random number data and asymmetric encryption of said random number data is performed in advance, when the pen is in an idle, non-communicating mode, for example during battery loading of the pen or when the pen is lifted from the position-coded paper. This alleviates delay times when the pen is in its communicating mode.

The invention discloses a light-transmitting display panel and a manufacturing method thereof, and a display panel. The light-transmitting display panel comprises an array substrate and a light-emitting element layer, wherein the light-emitting element layer is located on the array substrate and includes a first electrode, a first light-emitting structure located on the first electrode and a second electrode layer located on the first light-emitting structure. A plurality of through holes with unequal sizes are distributed in the second electrode layer, and each through hole penetrates throughthe second electrode layer in a thickness direction of the light-transmitting display panel. According to the light-transmitting display panel provided by the embodiment of the invention, overall light transmittance of the second electrode layer is improved, and a diffraction phenomenon of the light-transmitting display panel on light rays is improved.

The invention discloses alcohol-soluble copolyamide and a preparation method thereof. The alcohol-soluble copolyamide is characterized by being prepared by charging dicarboxylic acid, diamine, lactam and furan-2,5-dicarboxyic acid wchi are used as raw materials and carrying out fusion polycondensation to obtain the alcohol-soluble copolyamide, wherein the raw materials react in equivalent ratio of carboxyl to amino of 1:1. The novel alcohol-soluble copolyamide obtained by adopting the preparation method contains more than 60wt% of biomass-based raw material, has excellent alcohol solubility and can be applied to the fields of paints and binding agents.

The invention discloses a middle-modulus carbon fiber preparation method based on rapid spinning and high denier precursor, and belongs to the field of high-performance carbon fiber preparation method. The middle-modulus carbon fiber preparation method comprises following steps: PAN precursor is delivered into a pre-oxidation furnace for pre-oxidation so as to obtain a pre-oxidized fiber body with a density ranging from 1.33 to 1.36g/cm<3>; the pre-oxidized fiber body is delivered into a low temperature carbonization furnace for low temperature carbonization so as to obtain a low temperature carbonized fiber body; the low temperature carbonized fiber body is delivered into a high temperature carbonization furnace for high temperature carbonization, and the carbon fiber with tensile strength ranging from 4500 to 5100MPa, tensile modulus ranging from 270 to 310GPa, and filament diameter ranging from 6 to 10<mu>m is obtained via carbonization. The middle-modulus carbon fiber preparation method is capable of realizing synchronous increasing of carbon fiber tensile modulus and strength, and solving key problems that the tensile strength of middle-modulus carbon fiber is reduced, and cost is high.

The invention discloses low-friction-coefficient and solvent-free type polyurethane adhesive and a preparation method thereof and belongs to the field of polyurethane adhesive preparation. The adhesive is prepared from A component and B component, wherein the A component is prepared from modified polyester polyol and polyisocyanate which react with each other, and the B component is prepared from modified polyester polyol. By means of molecular design, the appropriate proportion of branched chain is introduced into the adhesive; thus, the regularity of the adhesive is reduced, a solidified adhesive layer of the adhesive has certain microcosmic unevenness, the microcosmic unevenness of a composite membrane is further obtained, the bonding force between surfaces is reduced, and the composite membrane has a low friction coefficient; as the branched chain is introduced into the adhesive, the crystalline of the molecular chain is reduced, the transparency of the adhesive is improved, the adhesive also can obtain lower viscosity and good coating performance, and the adhesive is wider in application range in the field of composite flexible package. The solvent-free adhesive has no solvent residue and is high in safety.

The invention discloses a phthalonitrile-terminated fluorine structure-containing poly(arylene ether nitrile) oligomer, a phthalonitrile-terminated fluorine structure-containing poly(arylene ether nitrile) condensate, and a preparation method of the oligomer. The phthalonitrile-terminated fluorine structure-containing poly(arylene ether nitrile) oligomer has chain segments with different lengths and a large-volume side group structure, so the oligomer has a low melting point and a good dissolvability, can be dissolved in DMF, NMP and other strong polar solvents, and also can be dissolved in THF, dichloromethane and a toluene and acetonitrile mixed solvent. The phthalonitrile-terminated fluorine structure-containing poly(arylene ether nitrile) condensate has excellent heat stability and mechanical performances, the 5% decomposition temperature in a nitrogen atmosphere is 499-528 DEG C, the residue mass rate at 1000 DEG C is 69-73.2%, and the bending strength is higher than 500 MPa. Thepreparation method of the phthalonitrile-terminated fluorine structure-containing poly(arylene ether nitrile) oligomer is simple and controllable, and can be applied to industrial production.

The present invention provides a preparation method of under-glaze red pottery tableware, including following steps: (1) select materials; (2) producing red ceramic clay; (3) biscuit firing, baking in oxidizing atmosphere with temperature of 950-1000 DEG, time 7.5-8 hours, heat insulation 7-8 hours; (5) cladding glaze, surface decoration processing; (6) baking color and drying in kiln, with a temperature of 740-760 DEG, time 3-4 hours, heat insulation 9-10 hours; (7) cladding transparent glaze, glaze firing with a temperature of 1050-1100 DEG, time 9-10 hours, heat insulation 11-12 hours; (8) checkout, packaging, warehousing. Applying the present invention, the red pottery tableware is provided with advantages of light weight, low baking temperature, low energy consumption, products easily weathering when breakage, reducing pollution to ecologic environment; and thermal stability of products is preferable, better preservation, high manufacturing yield; employing under-glaze decoration art, bright in color, fastness, elegant quality, conforming to life requirement of modern people.

The invention provides a method for preparing poly(2-methyl butylene succinate) with high molecular weight (HMW). The method comprises the following steps: heating 2-methyl succinic acid, butanediol and a catalyst to 110-170 DEG C in the presence of nitrogen to carry out esterification under normal pressure so as to obtain a polyester prepolymer; reducing the pressure of the polyester prepolymer and raising the temperature to 180-230 DEG C to carry out polycondensation so as to obtain poly(2-methyl butylene succinate); and finally adding a chain extender to carry out chain extension to obtainthe poly(2-methyl butylene succinate) with HMW. The method has the following advantages and positive effects: in the presence of methyl, the regularity of the main polymer chain is reduced and the symmetry of the chain is destroyed, thus changing the crystallization property of the polymer and then adjusting the biodegradability of the polymer; and the obtained 2-methyl polyester succinate is expected to have good biodegradability, thus really realizing biological recycling of limited resources.

The invention provides a branched chain type degradable hydrophilic polyester master batch and a preparation method thereof. A degradable lactic acid group with a multi-branched chain structure and polyalcohol with a polyhydroxyl structure are introduced into a chain segment, excellent biodegradability and hygroscopicity are given to polyester, the degradability of polyester is further improved, a static contact angle of the surface of a copolyester chip is less than 60 degrees, and intrinsic viscosity is 0.45-0.52dL/g. The invention also provides a preparation method of branched chain type degradable hydrophilic polyester. The preparation method comprises the steps that reaction is carried out on benzenetetracarboxylic anhydride and lactic acid for preparing a branched chain monomer, then primary esterification reaction is carried out on the branched chain monomer, terephthalic acid and ethylene glycol, and then polyalcohol is added in a secondary prepolycondensation process for carrying out copolycondensation, and final polycondensation is carried out for preparing the branched chain type degradable hydrophilic polyester. The prepared polyester has the advantages of good hydrophility, fast biodegradation and the like and can be widely applied to the fields of home textiles, clothing, plastics and the like.

The invention relates to the technical field of high molecular materials, and particularly relates to copolymerized polyimide thermosetting resin comprising a carborane structure and a preparation method and an application thereof. The copolymerized polyimide resin is prepared by thermally cross-linking and solidifying polyimide oligomers represented by a formula I as a raw material. The oligomersintroduce the carborane of a certain composition into a conventional thermosetting polyimide resin system by means of a copolymerization method, so that the conventional thermosetting polyimide resinhas relatively low hot melt viscosity and a higher glass-transition temperature (higher than 500 DEG C) and also has more excellent thermal oxidation resistance and heat stability resistance. Therefore, the thermosetting resin has the extremely low hot melt viscosity. The resin is more easily prepared into a composite material part of a complex structure through a conventional processing technology, can improve the thermal oxidation resistance of the material to a great extent, and has very high application value and innovation to prepare a light high strength high-temperature-resistant easily processed polyimide composite material for a structural material in the aerospace field.

The invention discloses mono-carboxyl chitosan/alkannin composite nanometer particles and a preparation method thereof. Alkannin coated nanometer particles are prepared through ion gel coagulation effects of water-soluble mono-carboxyl chitosan and sodium tripolyphosphate, and then mutual cross-linking and assembling of hydrophilic macromolecule addition agents and the mono-carboxyl chitosan, composite nanometer particle being small in particle diameter, homogeneous in size, high in stability and good in biological activity are prepared. The method disclosed by the invention is simple and easyto operate, low in cost, mild in reaction condition, environmentally-friendly, safe and non-toxic, the obtained composite nanometer particles are resistant to gastric acid and high in stability, andthe orally-taken absorption and utilization rate of a Chinese herbal medicine namely alkannin and the target medicine release properties are effectively improved.