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73results about How to "Fix incompatibilities" patented technology

Acidic dyeable polyester and method for preparing acidic dyeable polyester and fiber thereof

The invention relates to acidic dyeable polyester and a method for preparing acidic dyeable polyester chip and fiber. The method comprises the steps of performing transesterification or esterification to p-phenyl dimethyl formate or p-phenyl dicarboxylic acid and glycol, adding polyamide such as nylon 6 and / or nylon 66 during polyester polymerization so as to prepare polyester chip, drying the polyester chip and using a conventional spinning machine to spin so as to prepare the polyester fiber used for the dyeing of acid dye. The polyester fiber thoroughly solves the problem that polyester and polyamide are not compatible, ensures uniform dyeing of acid dye, and enables spinning workstage to proceed smoothly. In addition, as the preparation of the polymer adopts a process similar to polyester polymerization for polymerization on a common polyester polymerization device, the method is simple to operate, easy to perform industrial production and low in cost.
Owner:CHINESE TEXTILE ACAD

Reinforced PA6/ABS(Polyamide 6/Acrylonitrile-Butadiene- Styrene) alloy material and preparation method thereof

InactiveCN102558849AFix stability issuesSolve the disadvantage of easy warpingGlass fiberHeat resistance
The invention relates to a reinforced PA6 / ABS(Polyamide 6 / Acrylonitrile-Butadiene- Styrene) alloy material, belonging to the technical field of polymer materials. The reinforced PA6 / ABS alloy material is characterized by comprising the following components in percentage by weight: PA6 30-70, ABS 10-50, anti-impact modifier 5-15, glass fiber 10-40, compatilizer 1-10, antioxidant 0.2-1 and lubricant 0.3-0.8. The reinforced PA6 / ABS alloy material has the characteristics of stable size, high strength, high fluidity, chemical resistance, wear resistance, good heat resistance performance,etc. The reinforced PA6 / ABS alloy material can be used for injection molding automotive interior parts, automobile wheel covers, printer gears, sports equipment and other motor products.
Owner:徐州腾飞工程塑料有限公司

Polyaniline/silver conductive nanocomposite material and preparation method thereof

The invention relates to a polyaniline / silver conductive nanocomposite material and a preparation method thereof, which belong to the technical field of composite materials. In the method, aniline is polymerized to form polyaniline and silver ions are reduced in situ at the same time by adopting an opposite phase microemulsion polymerization method without the addition of an oxidizer or a reducer and by effectively utilizing UV irradiation technology; and silver particles are uniformly dispersed in the polyaniline to form a nano-core-shell structure of which silver particles are coated by the polyaniline. By using the method, the problem of system incompatibility in a process of compounding a metal with the polyaniline in situ is solved, and the problem of agglomeration when nano-silver particles and the polyaniline are polymerized is solved, so that the generated nano-silver particles are dispersed in the polyaniline uniformly to form the nano-core-shell structure. Therefore, the conductivity, the thermodynamic stability and the processability of the polyaniline are improved effectively.
Owner:CENT SOUTH UNIV

Modified polybutadiene prepolymer as well as preparation method and application thereof

The invention relates to a modified polybutadiene prepolymer as well as a preparation method and application thereof, resin composition prepared from the modified polybutadiene prepolymer, a prepreg prepared from the resin composition, a metal foil coated laminated board and a layer insulation film. The modified polybutadiene prepolymer is a prepolymer of an epoxy polybutadiene mixture, bismaleimide resin and cyanate ester in the weight ratio being 100: (10-60): (15-80). The problem that polybutadiene is incompatible with other resin is solved, the adhesion performance of a hydrocarbon resin system is improved, the peel strength between copper foil of the laminated board and the resin layer is improved, and the dielectric performance of the resin system is not affected. The brittleness of a maleimide cured product is improved by the aid of epoxy polybutadiene resin, polybutadiene and silica-containing butadiene.
Owner:SHENGYI TECH SUZHOU

Entropy weight fuzzy matter element method for sewage treatment process comprehensive evaluation

The invention relates to an entropy weight fuzzy matter element method for sewage treatment process comprehensive evaluation, belonging to the field of optimization of sewage treatment technology. The method comprises the following steps: step I: a sewage treatment process fuzzy matter element model is built, comprising building of a compound fuzzy matter element, building of preferred membership degree fuzzy matter element, and building of a standard fuzzy matter element and a difference square compound fuzzy matter element; step II: the weight of an evaluation index is calculated by an entropy weight method, comprising construction of judgment matrix, normalization calculation, entropy definition and entropy weight definition of n evaluation indexes of m sewage treatment processes; step III: the optimal sewage treatment process is determined and an European style approach degree compound fuzzy matter element is built. In the invention, matter element theory is used as an evaluation tool for sewage treatment process, good evaluation to the sewage treatment process is realized, interference of artificial subjective factors is avoided in the whole calculating process, the objectivity for realizing weight calculation is realized to the maximum extent, and an evaluation decision method is clear in concept, and is visual, so that the computer programming is realized easily.
Owner:BEIJING UNIV OF TECH

Polyester polyethylene alloy plastic pipe and preparation method thereof

The invention relates to the field of material processing, in particular to a polyester polyethylene alloy plastic pipe and a preparation method thereof. The polyester polyethylene alloy plastic pipe is mainly prepared from the raw materials including PET (polyethylene terephthalate), PE (polyethylene), compatilizer and antioxygen, wherein the compatilizer is maleic anhydride grafted PE or maleic anhydride grafted POE (polyoxyethylene), and the antioxygen is antioxygen 1010 or antioxygen 1076. The problem that PET and PE are incompatible is well solved; the prepared polyester polyethylene alloy plastic pipe has higher mechanical property, and can meet the requirements in the fields of engineering embedded pipes, threading pipes and the like; moreover, the PET does not need to be dried in the preparation process, so that a great deal of manpower and material resources are saved. The preparation method is simple and practicable, and the prepared polyester polyethylene alloy plastic pipe has higher mechanical property; moreover, the polyester polyethylene alloy plastic pipe is used and continuously extruded, so that a fused mixture is prepared into the pipe, the material performance reduction can be decreased, and the energy of secondary heating can also be reduced.
Owner:SHENZHEN LUHUAN REGENERATION RESOURCE DEV CO LTD

Regional water pollution comprehensive evaluation and optimization method based on entropy weight fuzzy matter element method

The invention discloses a regional water pollution comprehensive evaluation and optimization method based on an entropy weight fuzzy matter element method. A quantification method is adopted for constructing a comprehensive evaluation model of a regional water pollution emission source, and a linear programming model with optimal regional water environment comprehensive effects is established according to the comprehensive evaluation result. The method comprises the steps of establishing a fuzzy matter element model, performing weight calculation through an entropy weight method, determining a regional major emission source and establishing a regional emission source optimization model. According to the method disclosed by the invention, a matter element theory is used as an evaluation tool for the water pollution emission source, and good evaluation of the water pollution emission source is further realized. The objectivity in comprehensive evaluation of the water pollution emission source is realized: system optimization is performed on the basis of comprehensive evaluation, the comprehensiveness of a system is considered to the greatest extent, and the optimization result is more in line with the practical application situation. The established evaluation decision-making method is clear and visual in concept; and furthermore, the calculation process is simple, and computer programming calculation is easy to realize.
Owner:BEIJING UNIV OF TECH

Preparation method of cetyl trimethyl ammonium bromide modified montmorillonite

The invention relates to a preparation method of cetyl trimethyl ammonium bromide modified montmorillonite. According to the preparation method, sodium-based montmorillonite is taken as a raw material, the montmorillonite and water are first mixed according to a certain proportion, and after the montmorillonite is expanded by a large amount of water, a sol is formed and a Tyndall phenomenon is generated, wherein colloidal particles in the sol are all nano-sheets or nano-particles, and nanocrystallization is realized; then hexadecyl trimethyl ammonium bromide is taken as an intercalation agent,and the cetyl trimethyl ammonium bromide is intercalated into stripped nano sodium montmorillonite layers through a cation exchange reaction by mechanical stirring, so that the cetyl trimethyl ammonium bromide modified montmorillonite is obtained. According to the preparation method, the adopted raw materials are few and have low prices, operation is simple, production cost is low, performance such as mechanical strength, gas barrier property, hydrophobicity and the like of the montmorillonite are greatly improved, and the prepared organic montmorillonite can be widely used as a corrosion inhibitor in the field of corrosion prevention.
Owner:ZHEJIANG UNIV OF TECH

Oral tablet containing telmisartan and amlodipine besylate and preparation method thereof

The invention discloses an oral tablet containing telmisartan and amlodipine besylate. The oral tablet is characterized by comprising a telmisartan tablet core and an amlodipine coating layer. The stability problem caused by incompatibility of the two main medicines amlodipine and telmisartan and the dissolution curve matching problem are solved by adopting the compound coated tablet. The tablet provided by the invention has beautiful surface and stable quality. The invention also provides a preparation method of the oral tablet. The preparation method is simple in process and lower in cost and is more suitable for commercial production.
Owner:ZHEJIANG HUAHAI PHARMACEUTICAL CO LTD

Rubber material for rubber shoe sole and preparation method thereof

The invention discloses a rubber material for a rubber shoe sole and a preparation method thereof. The rubber material is prepared from the following raw materials in parts by weight: 45 to 65 parts of nitrile rubber, 35 to 45 parts of organosilicone rubber, 5 to 10 parts of rubber and plastic alloy, 4 to 8 parts of modified vinyl resin, 3 to 6 parts of modified rare earth oxide, 1 to 4 parts of vulcanizing agent, 3 to 7 parts of tetrasulphide dipentyl methylene thiuram, 2 to 6 parts of diisopropyl peroxide, 4 to 8 parts of maleic anhydride-grafted polyethylene, 2 to 4 parts of zinc methacrylate, 5 to 10 parts of dibutyl phthalate, 3 to 6 parts of pentaerythritol stearate, 10 to 20 parts of modified nanometer wear-resistant filler, 3 to 7 parts of zinc ricinoleate, 2 to 5 parts of activator, 1 to 3 parts of softener, 0.5 to 1.5 parts of rubber accelerant, and 0.4 to 0.8 part of anti-aging agent. The rubber material for the rubber shoe sole has the advantages that the elasticity is high, the abrasion-resistant property is high, the tensile property and compressive property are realized without damage, the corrosion-resistant property is realized, and the weather-resistant property is good.
Owner:HEFEI YUANKE GARMENT DESIGN CO LTD

Adhesive, and preparation method thereof

The invention relates to an adhesive. The adhesive comprises a rubber material and an organic solvent at a mass ratio of 1:3-20; the rubber material comprises or contains following ingredients, by weight, 40 to 60 parts of butadiene-acrylonitrile rubber, 20 to 50 parts of natural rubber, 10 to 30 parts of butadiene styrene rubber, 3 to 8 parts of zinc oxide, 0.5 to 2 parts of stearic acid, 1 to 3 parts of anti-aging agent RD, 5 to 10 parts of coumarone, 3 to 16 parts of 204 tackifying resin, 10 to 40 parts of carbon black N550, 5 to 15 parts of white carbon black, 2 to 8 parts of dioctyl phthalate, 1.0 to 3.5 parts of sulphur, 0.5 to 3 parts of accelerant CZ, 0.1 to 1 part of accelerant TMTD, and 0.5 to 3 parts of accelerant DM. A preparation method is simple; cost is low; and preparation is flexible.
Owner:柳州日高汽车减振技术有限责任公司

Crosslinked polyethylene cable insulating material containing compounding agent with high electrical resistance and preparation method thereof

PendingCN113736203AExcellent stability and uniform dispersionGood stability and dispersionPlastic/resin/waxes insulatorsPolymer scienceInsulation layer
The invention discloses a crosslinked polyethylene cable insulating material containing a compounding agent with high electrical resistance and a preparation method thereof, belongs to the technical field of electrical materials, and solves the problems that when an existing voltage stabilizer improves the voltage resistance of the crosslinked polyethylene insulating material, the wide-temperature-range high efficiency and long-term compatibility of the voltage stabilizer cannot be considered at the same time, and the electrical tree resistance and breakdown resistance of crosslinked polyethylene at different temperatures cannot be comprehensively improved. The voltage stabilizer used in the invention comprises a six-membered chelate ring structure composed of hydroxyl, carbonyl and a benzene ring, the grafting reaction of vinyl ensures the uniform and stable dispersion of the voltage stabilizer, and the voltage stabilizer forms a uniform and dense electron action space in a polymer due to a larger molecular structure and electron conjugate surface, and thus the electronic energy consumption effect of the chelate ring is fully exerted, and the electrical tree resistance and the breakdown strength of the material in the whole use temperature range of a cable insulation layer are remarkably improved.
Owner:HARBIN UNIV OF SCI & TECH

Organosilicon composition and preparation method thereof

The invention relates to a preparation method of an organosilicon composition. The composition is prepared from an organosilicon active substance, hydroxylpolysiloxane, spatial structure polyether modified polysiloxane, linear polyether modified polysiloxane, polyether and a cosolvent. The synergistic winding and wrapping effects of the spatial structure polyether modified polysiloxane and the linear polyether modified polysiloxane make the organosilicon active substance stably exist in a polyether system for a long term. The obtained organosilicon composition can be applied to defoaming agents, waterproof agents, water repellents, wetting agents and other assistants according to the difference of the active substance.
Owner:南京瑞思化学技术有限公司

Transition-rare earth dissimilar metal cluster doped polyniobic acid compound and preparation method thereof

The invention discloses a transition-rare earth dissimilar metal cluster doped polyniobic acid compound, the molecular formula of the compound is Na6H20 {TM2 [Dy3O (<mu>3-OH) 3 (H2O) 3] 2 (Nb6O19) 5}. nH2O, six Dy < 3 + > ions and two TM < 3 + > ions form an 8-core transition-rare earth dissimilar metal cluster inside cluster anions in the crystal structure of the compound, a regular triangular bipyramid configuration is formed in the cubic axis direction, the upper end and the lower end of the dissimilar metal cluster and the equatorial plane of the dissimilar metal cluster successfully capture five {Nb6O19} (Nb6) cluster units, so that rare transition-rare earth dissimilar metal cluster doped polyniobic acid cluster anions are formed. According to the preparation method, a conventional hydrothermal method and a room-temperature volatilization method are combined, a sodium carbonate-sodium bicarbonate buffer solution is used as a solvent, the preparation process is simple, the pH value of a reaction system can be maintained in a proper and stable range, meanwhile, the problem that a niobate precursor and two dissimilar metals are incompatible when coexisting is solved, and the transition metal and rare earth ions are prevented from prematurely separating out a large amount of precipitates.
Owner:FUZHOU UNIV

Ink binder as well as preparation method and application thereof

The invention provides an ink binder as well as a preparation method and application thereof, and relates to the technical field of printing. The ink binder provided by the invention is prepared from the following raw materials in percentage by mass: 10-20% of oil-soluble resin containing an ester structure, 10-20% of oil-soluble and ester-soluble resin, 10-30% of vegetable oil and / or derivatives, 1-10% of mineral oil, 10-20% of ester-soluble resin, 10-30% of acrylate monomer and 5-20% of acrylate with an isocyanate group. The ink binder provided by the invention has excellent solubility in vegetable oil and mineral oil, also has excellent solubility in an acrylate monomer, and can be suitable for production of mixed ink. The ink binder provided by the invention has UV-LED curing and oxidation film-forming drying performances, and is suitable for nitrile rubber, ethylene propylene rubber and dual-purpose rubber rollers.
Owner:杭华油墨股份有限公司

Method for flame-retardant modification of natural cellulose fabric through protein

The invention relates to a method for finishing flame-retardant modified natural cellulose fabric with protein. The selected flame retardant is dissolved in deionized water to make a flame retardant finishing solution, and the fabric is treated by two dipping and two rolling methods, and then the protein is dissolved in deionized water to prepare an emulsion with a certain viscosity, and The fabric after the flame-retardant treatment in the previous step is coated, and then placed in an oven for drying. The char-forming property of the fabric after flame-retardant treatment becomes better, and the limiting oxygen index and vertical burning effect are obviously improved. In the GB / T5455‑1997 Textile Combustion Performance Test Vertical Method, it has reached level B1. The invention adopts two dipping, two rolling and coating processes to treat the fabric, and has the advantages of simple process, less equipment investment, and little influence on the mechanical properties of the fabric itself.
Owner:BEIJING UNIV OF CHEM TECH

Preparation method of biodegradable composite film

The invention discloses a preparation method of a biodegradable composite film. The preparation method comprises the following steps: S1, mechanically mixing polylactic acid, poly (butylene adipate-co-terephthalate) and modified starch, and stirring at a constant speed to form a premix; s2, adding the premix obtained in the step S1 from a charging hole of a double-screw extruder, and carrying out melt extrusion, water cooling and granulation by a granulator; s3, drying the material obtained in the S2 in an air dry oven to obtain the special resin for film blowing; the biodegradable composite film prepared through a melt blending extrusion and film blowing technology has the advantages of degradability, environmental friendliness and the like, meanwhile, the brittleness of the polylactic acid is improved through the poly (butylene adipate-co-terephthalate), and the poly (butylene adipate-co-terephthalate) and the polylactic acid are biodegradable materials and meet the environmental protection requirement; the defect of serious brittleness of a polylactic acid film is overcome, the biodegradable composite film is prepared through a solution tape casting method, and the problem that hydrophilic starch is incompatible with hydrophobic polylactic acid is solved.
Owner:NORTH CHINA INST OF AEROSPACE ENG

Donor type hemopoietic chimera and its prepn process

The present invention discloses donor type hemopoietic chimera and its preparation process. The chimera has end blood cell from differentiation and development of human stem cell and hemopoietic function from human hemopoietic stem cell. The preparation process of the chimera includes the following steps: preparing human hemopoietic stem cell for transplantation with single human nuclear cell; screening animal and performing treatment for transplantation; transplanting human hemopoietic stem cell to the screened animal; and treating the animal after transplantation to obtain human / animal hemopoietic chimera. The present invention provides ideal human blood source substitute.
Owner:THE FIRST AFFILIATED HOSPITAL OF THIRD MILITARY MEDICAL UNIVERSITY OF PLA

Clay-resistant polycarboxylate water-reducer compoundable with naphthalene-based water-reducer and preparation method thereof

ActiveCN104017125BPrevent insertionEasy to disperse thermal stabilitySuperplasticizerWork Performances
The invention relates to an anti-clay polycarboxylate water reducer capable of being compounded with a naphthalene water reducer and a preparation method thereof. The anti-clay polycarboxylate water reducer is prepared from the following raw materials: a comonomer, a chain transfer agent, an initiator and deionized water. The preparation method comprises the following steps: adding the deionized water into a four-mouth flask and heating to 60-80 DEG C; filling the comonomer, the chain transfer agent and the deionized water in a beaker to prepare a solution A; filling the initiator and the deionized water in another beaker to prepare a solution B; respectively, simultaneously and uniformly dropping the solutions A and B into the four-mouth flask by a constant flow pump, and after reaction, cooling and adjusting the pH value to 6.5-7.0 to obtain the anti-clay polycarboxylate water reducer. The polycarboxylate water reducer provided by the invention can be compounded with the naphthalene water reducer in use, so that the problem that the prior art, the polycarboxylate water reducer and the naphthalene water reducer are incompatible is solved. The anti-clay polycarboxylate water reducer is good in anti-clay performance and can be used for remarkably improving the working performance of high silt content aggregate prepared concrete, and the fresh concrete is good in peaceability, less in gradual loss, high in strength and suitable for industrial production.
Owner:SHIJIAZHUANG CHANGAN YUCAI BUILDING MATERIALS

Connector processing method for Small RNA next-generation sequencing and library building

The application discloses a connector processing method for Small RNA next-generation sequencing and library building and application of the connector processing method. According to the application, the connector processing method comprises the following steps: A, adding SE library 3' connector and 5' connector to two ends of a Small RNA segment; B, conducting reverse transcription on the Small RNA segment that the connectors are linked, so as to obtain cDNA; C, adding 'A' to the 3' end of the cDNA segment obtained from Small RNA segment; and D, connecting a PEI 'Y'-shaped connector on the cDNA segment obtained in the step C. According to the connector processing method of the application, by adding the PEI connector on the basis of the SE connector, the built Small RNA library can make use of a PEI sequencing reagent during sequencing, so as to solve the problem on the compatibility of the SE library and the PEI library sequencing reagent and to facilitate Small RNA sequencing; therefore, the connector processing method can offer convenience for cancer diagnosis and subsequent targeted therapy based on the Small RNA sequencing.
Owner:北京六合华大基因科技有限公司 +1

Aliphatic-series hyperbranched epoxy resin and preparation method thereof

The invention discloses aliphatic-series hyperbranched epoxy resin and a preparation method thereof. According to the aliphatic-series hyperbranched epoxy resin disclosed by the invention, polyalcoholcompound and epoxy compound are utilized as monomer; the aliphatic-series hyperbranched epoxy resin is prepared by mass polymerization, proton transfer and a one-step method. An epoxy value of the aliphatic-series hyperbranched epoxy resin disclosed by the invention is 0.2 to 0.3 mol / 100g, the weight-average molecular weight is 3,000 to 6,000 g / mol, and a branching degree is 0.3 to 0.6. An innercore of the aliphatic-series hyperbranched epoxy resin contains a lot of hydroxyls, and the outer end contains epoxy functional groups. The aliphatic-series hyperbranched epoxy resin disclosed by theinvention can serve as a modifier to further improve performance of high molecular materials. The aliphatic-series hyperbranched epoxy resin disclosed by the invention has the advantages of simple technology, high product purity, high yield and no complex purification operation.
Owner:HUNAN UNIV OF TECH

Antifouling atactic polypropylene and modified superhigh-molecular-weight polyethylene composite pipe

The invention relates to an antifouling atactic polypropylene and modified superhigh-molecular-weight polyethylene composite pipe. The pipe is prepared by adopting a co-extrusion integrated forming process for processing an inner layer, a middle layer and an outer layer in a molten state, wherein the inner layer of the composite pipe is a modified superhigh-molecular-weight polyethylene layer, themiddle layer is a compound hot melt adhesive layer, and the outer layer is an atactic copolymerization polypropylene (PPR) layer. In the invention, modified superhigh-molecular-weight polyethylene, ahot melt adhesive and copolymerized polypropylene are compounded in the molten state, and compounding of the hot melt adhesive guarantees a dense structure and complete integration between two material composite layers. The antifouling PPR and the modified superhigh-molecular-weight polyethylene composite pipe of the present invention has good processing performance, good low-temperature resistance, fouling resistance and low manufacturing cost, and is a novel pipe for transferring hot and cold water, and is applicable to waterway systems of high-end home furnishings.
Owner:LINHAI WEIXING NEW BUILDING MATERIALS CO LTD

Green construction evaluation method

The invention discloses a green construction evaluation method. The method comprises the steps of firstly refining a goal of green construction into levels; building level models of a green construction scheme; comparing importance degrees of the level models; establishing a comparison matrix and calculating a weight coefficient; performing single-factor fuzzy evaluation; establishing a fuzzy relation matrix; by utilizing composite calculation, obtaining a fuzzy comprehensive evaluation model; and finally performing comprehensive scoring. According to the method, the level of the goal is refined for characteristics of multilevel incompatibility, fuzzy uncertainty and the like in construction green degree evaluation, the incompatibility problem and the processing fuzzy uncertainty problem are solved by matter element analysis, and a green construction process is evaluated in combination with a fuzzy mathematic theory.
Owner:GUANGDONG POLYTECHNIC OF ENVIRONMENTAL PROTECTION ENG

Antistatic organosilicon pressure-sensitive adhesive containing electron transport material and preparation of adhesive

The invention provides an antistatic organic silicon pressure-sensitive adhesive containing an electron transport material and a preparation method of the antistatic organic silicon pressure-sensitive adhesive. The antistatic organosilicone pressure-sensitive adhesive is prepared from the following raw materials in parts by mass: 80-100 parts of diluted addition organosilicone resin, 10-20 parts of ionic liquid-carbon nanotube conductive gel, 4-10 parts of a compound containing alkylene oxide, 4-10 parts of an acrylate compound and 1-5 parts of a platinum catalyst. The carbon nano tube and ionic liquid mixed gel is used as an antistatic agent, the problem of incompatibility between the carbon nano tube and the pressure-sensitive adhesive is solved, the gel premixing method is applied, the dispersion effect is good, the gel can be stored for a long time, and the agglomeration phenomenon is avoided; and the antistatic effect can be achieved only by adding a small amount of the antistatic agent, and the curing property, the mechanical property and the optical property of a formed film are not influenced.
Owner:ZHEJIANG UNIV OF TECH

Thermoplastic aluminum alloy used for plastics and preparation method

The invention belongs to the field of plastic preparation, and provides a thermoplastic aluminum alloy used for plastics and a preparation method. The preparation method comprises the following steps:adding aluminum alloy powder into a soluble polyimide solution, carrying out filtration drying and laser radiation treatment, and then adding thermoplastic resin polyamide into a double screw for blending so as to prepare thermoplastic aluminum alloy; and through laser treatment of the polyimide coated aluminum alloy powder, aluminum alloy powder and polyimide are fused and mixed together, the polyimide can be embedded into the aluminum alloy after cooling, and the polyimide is self-crosslinked through a laser action. A firm polymer coating layer is formed on the surface of the aluminum alloy, and through hydrogen-bond interaction of the polyimide and polyurethane resin, the polyurethane resin firmly coats the surface of the aluminum alloy powder, so that the problem that the aluminum alloy powder is incompatible with plastics is solved, and the filling amount of the aluminum alloy inside the plastics is improved.
Owner:CHENDU NEW KELI CHEM SCI CO LTD

Food risk comprehensive evaluation method based on improved matter element extension model

The invention discloses a food risk comprehensive evaluation method based on an improved matter-element extension model. The method comprises steps of firstly constructing a food risk evaluation matter element in combination with a matter-element extension theory, and selecting a correlation function suitable for the food field to calculate the single-index correlation degree of each evaluation index and each risk grade; secondly, the optimal weight of each evaluation index being calculated based on the optimal and worst method in combination with expert evaluation, the food risk grade being determined through the comprehensive correlation degree between the evaluation indexes and the evaluation grade, and the food risk being rapidly and comprehensively evaluated. According to the method, problems of incompatibility of a traditional food risk evaluation system and relatively high weight subjectivity, high evaluation result distortion degree, low evaluation efficiency and the like caused by relatively many qualitative components in an evaluation method are solved, and the risk of food pollution can be comprehensively evaluated.
Owner:BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY

Smart camera

The invention discloses a smart camera, comprising a base, a shell and a camera, wherein the top of the base is embedded with a first turntable, the shell is arranged above the first turntable; a fixed bracket is arranged between the shell and the first turntable; the fixing bracket includes an upper plate body, a lower cylindrical body, a telescopic shaft and a buffer spring; the upper plate bodyis embedded in an upper end of the lower cylindrical body; the two ends of the telescopic shaft are respectively connected with the upper plate body and the lower cylindrical body; the buffer springis sleeved outside the telescopic shaft, and the two ends of the buffer spring are respectively connected with the upper plate body and the lower cylindrical body; the shell is fixedly mounted on thetop of the upper plate body; the bottom of the lower cylindrical body is fixedly connected with the top of the first turntable through a screw; a second turntable is embedded in the middle of the shell; a rotating shaft is disposed through the center of the second turntable, and two ends of the rotating shaft are in active engagement with the inner walls of the two sides of the shell.
Owner:WUHU CHUNYUAN PHOTOELECTRIC EQUIP TECH CO LTD

Modified plasmid replicon and application thereof

The invention discloses a modified plasmid replicon and application thereof. The modified plasmid replicon is a mutant of a classic low-copy replicon pSC101 with the 93rd glutamic acid of RepA protein mutating into proline, and the codon encoding the proline is CCG. Plasmids carrying the artificially-modified plasmid replicon (pSC101-RepA-E93P), after being replicated in escherichia coli, can achieve an in-vitro extraction yield, which is about 12 times of that of plasmids carrying a wild type replicon of pSC101 and about twice of that of plasmids of pUC57 carrying CorEI / pMB1 / pBR322-type high-copy replicons. Meanwhile, in the Escherichia coli, the plasmids carrying the modified plasmid replicon can achieve replication almost at the same proportion with the plasmids carrying the CorEI / pMB1 / pBR322-type high-copy replicons.
Owner:NANJING GENSCRIPT BIOTECH CO LTD

Implant prosthesis and manufacturing method thereof

The invention provides implant prosthesis and a manufacturing method thereof. The implant prosthesis provided by the invention is compounded with a biological ceramic material on the surface of an inert implant material; the biological ceramic material can show good affinity with biological tissues such as cells, and therefore, the implant prosthesis has high biocompatibility, and a problem that the existing inert implant material is not compatible with the human body is solved. Meanwhile, the biological ceramic material of the implant prosthesis is compounded to the inert implant material, so that an internal structure of the inert implant material is not damaged, and therefore, decline in physical and chemical performances of the inert implant material are not caused. Experiment results indicate that the implant prosthesis prepared by the method disclosed by the invention is good in biocompatibility, free of sensitization and obvious cell toxicity.
Owner:CHONGQING TRADITIONAL CHINESE MEDICINE HOSPITAL
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