118results about How to "Improve product quality control" patented technology

The invention discloses a hydrothermal preparation method for a sulfur doping titanium dioxide photocatalyst with an anatase structure, comprising the following steps: 1)preparing a nano powder precursor solution by agitating and mixing 8-12ml butyl titanate, 55-65ml deionized water, 15-25ml absolute ethyl alcohol, 5-10ml trolamine and 0.38-4.56 gthiourea at a temperature of 10-40 DEG C; 2) preparing a nano powder in a hydrothermal condition by placing the nano powder precursor solution into a reaction kettle, rising temperature at a speed of 1-5 DEG C / min to 150-240 DEG C and keeping the temperature to perform the hydrothermal reaction, stopping heating after 2-5 hours, when the reaction kettle is naturally cooled to room temperature, taking out the reactants, washing with the deionized water and the absolute ethyl alcohol for 3-4 times, and finally drying the reactants in a vacuum drying oven at 50-80 DEG C. The invention is capable of synchronous achieving processes both of the preparation of TiO2 nano particle and sulfur doping, which makes the preparation technical line of the catalyst more reasonable, be suitable to product quantity control with low energy consumption.

The present invention relates to a kind of active component extracted from glossy ganoderma spore as material and its preparation and use. The glossy ganoderma spore oil contains total triterpene in 24-35 %, has density of 0.88-0.92, refractive index 1.45-1.48 and acid number 14-35. The preparation process with wall breaking glossy ganoderma spore as material includes mixing with alcohol solution, pelletizing, drying, supercritical CO2 extraction in extracting reactor, two-stage separation, and extraction to obtain oily matter, and eccentric separation to obtain yellow oil. The glossy ganoderma spore oil product is used in preparing medicine and food for raising body's immunity. The process of the present invention is simple, stable in product quality, convenient and high in product yield, and is suitable for industrial production.

The invention discloses a flange ball valve body forging technology, and relates to a forging technology and production of valve parts. The flange ball valve body forging technology is characterized in that a flange ball valve body is produced by a forging method; a flange and a valve body are integrally forged; the ball valve body is subjected to one-time hot die forging; round steel is subjected to upsetting forming and performing; and after finish forging, the flange ball valve body is trimmed to meet the requirement of the product on the dimension. A special preforming method is adopted, a round rod is preformed, a forge piece can be well filled in a cavity in the forming process, and defects that a material is not filled in the cavity, and the like are effectively avoided, so that the yield of the product is obviously improved; and the product has an excellent forging flow line, the product quality is well controlled, the inside metallographic structure is uniform and compact, and the product almost meets the requirements by 100 percent through ultrasonic flaw detection, and has an attractive appearance.

A process for preparing the nanoparticles of phthalocyanine sensitized TiO2 by in-situ hydrothermal method includes such steps as perparing the precurse liquid of TiO2 nanoparticles, and adding phthalocyanine as sensitizer while preparing TiO2 nanoparticles in hydrothermal condition. Its advantages are high dispersity and stability, high visual light catalytic activity and broadband.

The present invention relates to a kind of active component extracted from glossy ganoderma spore as material and its preparation and use. The glossy ganoderma spore oil contains total triterpene in 24-35 %, has density of 0.88-0.92, refractive index 1.45-1.48 and acid number 14-35. The preparation process with wall breaking glossy ganoderma spore as material includes mixing with alcohol solution, pelletizing, drying, supercritical CO2 extraction in extracting reactor, two-stage separation, and extraction to obtain oily matter, and eccentric separation to obtain yellow oil. The glossy ganoderma spore oil product is used in preparing medicine and food for raising body's immunity. The process of the present invention is simple, stable in product quality, convenient and high in product yield, and is suitable for industrial production.

A straddling type monorail frame is characterized in that the straddling type monorail frame comprises five module parts of a wide side beam, a narrow side beam, an end beam, a cross beam and stabilizing wheels; the two ends of the wide side beam and the narrow side beam are connected with the cross beam and the end beam in inserted and assembly-welding modes to constitute a large frame body; andthe large frame body and the two stabilizing wheels are subjected to assembly welding to form the straddling type monorail frame. The straddling type monorail frame is split into separate parts reasonably specific to the structural characteristics and functions of the parts, and in this way, process scheme implementation and quality control of each part are better facilitated. Firstly, the situation that the wide side beam and the narrow side beam are different in welding shrinkage, one of the wide side beam and the narrow side beam is long, the other one is short, and the whole frame body isin a parallelogram shape consequently can be avoided effectively; secondly, through process improvement and optimization, the working efficiency can be improved by 40%, and economic benefits of hundreds of thousands of yuan can be obtained according to the assumption that 20 monorail vehicles are produced by a company annually; and finally, significant improvement is achieved in the aspect of control cover frame size precision, and improvement in the aspect of product quality control can also bring the great indirect economic benefits.

The invention discloses yeast water and a preparation method as well as application thereof to cosmetics. The preparation method comprises the following steps: fermenting yeast, performing solid-liquid separation so as to obtain supernate, mixing the supernate with adsorbent, heating to react, and filtering so as to obtain yeast water A; washing the obtained bacterium with water, drying, crushing, further adjusting the temperature to minus 25 DEG C to minus 20 DEG C, after refrigeration ice crystallization of yeast cells, and crushing for at least minus 25 DEG C to minus 5 DEG C so as to obtain yeast cell micro powder; mixing the yeast cell micro powder with purified water, performing ultrasonic extraction, and filtering so as to obtain yeast water B; combining the yeast water A with the yeast water B, adding purified water to adjust till the content greater than effective concentration, adding an antioxidant and a preservative, thereby obtaining yeast water. The yeast water can remarkably reduce the smell of distillers' grain or adverse special fermentation smell, has outstanding beautifying effects and is applicable to preparation of cosmetics with effects of aging resistance, wrinkle resistance, beautifying, whitening and speckle paling.

The invention relates to a PVC (Polyvinyl Chloride) microcrystalline wood composite material and a preparation method thereof. The PVC microcrystalline wood composite material provided by the invention is mainly prepared from the following raw materials: 100 parts of PVC, 10 to 80 parts of pulverized biomass, 10 to 140 parts of sulfate, 2 to 6 parts of stabilizer, 0.4 to 1.5 parts of foaming agent, 4 to 10 parts of foaming control agent, 3 to 8 parts of flexibilizer, 0.3 to 2.0 parts of lubricating agent, and 0.3 to 1.8 parts of coupling agent. The invention also comprises a preparation method of the PVC microcrystalline wood composite material. The toughness and the rigidity of the PVC microcrystalline wood composite material prepared by the method are superior to those of an existing PVC microcellular foaming wood plastic material, especially the shrinking percentage of the material is remarkably reduced, the vicat softening point temperature is remarkably improved, and the PVC microcrystalline wood composite material can be widely applied in building materials such as indoor and outdoor floors, wallboards, top plates and home furnishing.

The invention relates to a quick-drying cold-forming starch toughening glue and a preparation method thereof. The quick-drying cold-forming starch toughening glue comprises the following materials with the following weight portions: 320 portions to 670 portions of starch, 1 portion to 5 portions of postassium pyroantimonate, 6 portions to 20 portions of exsiccated alum, 7 portions to 15 portions of light magnesium oxide, 5 portions to 20 portions of borax, 4 portions to 19 portions of solid natrium hyelroxide, 0.5 portion to 2 portions of aluminum sulfate, 3 portions to 12 portions of polyvinyl alcohol, 1 portion to 10 portions of expansion agent and 1030 portions to 1510 portions of water. The invention also includes the preparation method of the quick-drying cold-forming starch toughening glue. The quick-drying cold-forming starch toughening glue has low manufacturing cost, good storage performance, high bounding strength, high bounding speed and good water proof performance, and can be formed in cold conditions and be used as the adhesive for paper plates, paper boxes and the like and also as the toughening agent in paper manufacturing process.

The invention discloses a water-based ultraviolet light curing gravure varnish, which is made of the following raw materials in parts by weight: 60-90 water-based UV resin, 2-8 water-based ultraviolet photoinitiator, 3-8 water, and 8-15 alcohol , Water-proof mist additive 3-5, defoamer 0.1-1, leveling agent 0.1-1. The invention provides a water-based ultraviolet light-curable gravure varnish which has the advantages of both water-based varnish and UV varnish, low energy consumption, fast curing reaction and low VOC emission.

The invention relates to an automatic control color card coating and printing machine, which sequentially comprises a hair rolling mechanism, a coating and printing mechanism, a drying box, a cooling buffer mechanism, a slitting mechanism and a PLC control system along the flow direction of a color card paper base. By the technical scheme, the color card paper base is send out by the hair rolling mechanism; a color code layer is printed on the color card paper base by the coating and printing mechanism; the color card paper base enters the drying box; the drying box dries the color code layer on the color card paper base; the color card paper base enters the cooling buffer mechanism for cooling; and finally the color card paper base enters the slitting mechanism for slitting to form a color card with preset size. The color card paper base is inconsistent in front and back speeds when entering the slitting mechanism, so that the inconsistent front and back speeds can be buffered through the cooling buffer mechanism; the color card paper base can stably carry out pipeline flowing; and the production quality and the production efficiency of the color card are ensured.

The invention discloses a method for preparing a high-fluidity carbon black master batch by in-situ degradation of polypropylene with peroxide. The prepared high-fluidity color master batch still hasa high melt flow rate when the mass content of carbon black in the high-fluidity color master batch reaches up to 50-60%, and is easy to disperse in a low-viscosity polypropylene melt. The productionrequirements of special products such as polypropylene melt-blown cloth and fibers are particularly met. The method comprises the following steps: uniformly mixing polypropylene resin and organic peroxide in formula raw materials in a high-speed mixer; continuously and directly putting the mixture of polypropylene resin, organic peroxide and high-structure-degree carbon black into a double-rotor continuous mixing mill for blending; selecting a single-screw extruder with a high length-diameter ratio, and adding a high-fluidity PP / carbon black mixture and an antioxidant into a hopper of a single-screw extruder; adding a mixed solution of liquid paraffin oil and liquid ethylene propylene rubber into the middle section of the single-screw extruder, and further uniformly mixing; and finally, granulating to obtain the high-fluidity carbon black master batch.

The invention relates to a steel strip product whole-process quality control and automatic grade judgment method, and belongs to the technical field of cold-rolled automobile sheet production methods. According to the technical scheme, production and manufacturing standards are converted according to the requirements of users, all process parameters can be selected and can be located at different positions of the head, the middle and the tail, a judgment rule allowing the disqualification ratio can be set, and automatic blocking and degradation are carried out in a grade and score double-evaluation mode. The full-process quality control and automatic grade judgment system has the beneficial effects that the special requirements of customers are met, the enthusiasm of employees can be stimulated according to score value quantification, the labor force of manual judgment is liberated, and finally, the product quality control and the economic benefits of enterprises are effectively improved.

The invention discloses a method for producing potassium bicarbonate through self- carbonization multiple-effect cross flow continues evaporation crystallization, comprising the following steps: mixing a potassium bicarbonate ion exchange solution containing ammonium bicarbonate with a potassium bicarbonate mother solution containing potassium carbonate to obtain a mixed feed liquid; preheating the feed liquid, then putting the preheated feed liquid into a desorption self-carbonization tower to carrying out low temperature desorption self-carbonization; letting the feed liquid flowing out from the desorption self-carbonization tower successively enter an III-effect evaporator, an II-effect evaporator, an I-effect evaporator and an IV-effect evaporator for processing to obtain a solid-liquid mixture; separating the obtained solid-liquid mixture by a centrifugal machine to obtain potassium bicarbonate crystals and a potassium bicarbonate mother liquid containing potassium carbonate; drying and sieving the potassium bicarbonate crystals by a drying machine, and then packaging and putting in storage; and respectively putting the potassium bicarbonate mother liquid containing potassium carbonate into the II-effect evaporator and a liquid storage tank II. According to the invention, the energy consumption in the process of potassium bicarbonate evaporation can be remarkably reduced, and the particle size in the crystallization of potassium bicarbonate and the product quality are improved or controlled.

The invention discloses a motor compressor for a vehicle air conditioner, which comprises a compressor pump body, a motor assembly, and a motor driver, and is characterized in that: the motor assembly is integrally connected with the compressor pump body; and a motor casing of the motor assembly is embedded with a motor terminal which is butted to a driver plug of the motor driver. Because of thestructure, the device has the following advantages that: 1, the integrated structure of the air condition compressor is realized, the volume of the motor compressor is reduced, and the space of the finished automobile and the complicated conductor jointing are saved; 2, the modular design realizes resource saving and sharing and the independent supply of modules; 3, a cooling liquid per se is used for cooling to save the conventional external cooling fins and cooling fans; and 4, the product quality control is convenient, the modules can be replaced, and the maintenance cost at the later stage is reduced.

The invention discloses a bridge girder erection machine used for erecting precast beams and a bridge girder erection method thereof. The bridge girder erection machine comprises a mechanical arm which is symmetrically designed in the longitudinal direction and in the horizontal direction, and the mechanical arms are of a double-box-beam structure. A front assistant supporting leg is installed atthe front end of the mechanical arm, a jack-up supporting leg is arranged at the rear end of the mechanical arm, a front supporting leg and a rear supporting leg which are capable of walking in the longitudinal direction are arranged in the middle of the mechanical arm, and a bearing support leg is arranged on the rear side of the rear supporting leg. The method that bridge girder erection is erected by using the bridge girder erection machine is very suitable for quick erection of urban roads, urban light rails, subway routes and other overground overpasses in the peri-urban areas and the places where the construction conditions are complex, the traffic pressure of a construction environment is high; by means of the bridge girder erection machine and the bridge girder erection method, itwill be certain to drive the construction of elevated highways, the urban light rails and subway viaducts in Chinese to be developed to the environment-friendly, industrialized and standardized construction, and the economic and social benefits will be increasingly obvious.

The invention discloses a detection method of an L-2-amino-5-guanidinovaleric acid enantiomer and belongs to the technical field of food and drug analysis. The method mainly comprises the following steps: preparing a system applicable solution; preparing an enantiomer reference solution; preparing a test solution; preparing a derivatizing reagent; performing pre-column derivatization and chromatographic condition and system suitability tests; determining the L-2-amino-5-guanidinovaleric acid enantiomer. The detection method has higher sensitivity, accuracy, precision and durability, can accurately reflect content of the L-2-amino-5-guanidinovaleric acid enantiomer and is applicable to detection and quality control of the L-2-amino-5-guanidinovaleric acid enantiomer in industry, so that reference is provided for setting reasonable quality standards, product quality can be controlled and mastered better, and edible and medicinal safety is guaranteed.

The invention discloses a pharmaceutical analysis method for efficiently determining gangliosides GM1 and impurities thereof, and belongs to the technical field of pharmaceutical analysis. According to the method, a chromatographic column taking octadecylsilane chemically bonded silica as a filler is used as a stationary phase, and a mixed solution of a buffer salt solution and an organic phase isused as a mobile phase, so that the gangliosides GM1 related substances and content can be effectively separated and determined.

The invention discloses gynostemma pentaphylla lipid-lowering tea. Counted by 1000 bags of finished product with a specification of 3.0g / bag, the gynostemma pentaphylla lipid-lowering tea comprises 2.0kg of gynostemma pentaphylla, 1.0kg of hawthorn, 0.1kg of ginkgo leaf extract, 1.0kg of rhizoma alismatis, 0.5kg of semen cassiae, 0.5kg of lotus leaf, 0.4kg of wild pueraria, 0.3kg of prepared polygonum multiflorum and 0.3kg of fructus lycii. The gynostemma pentaphylla lipid-lowering tea disclosed by the invention adopts gynostemma pentaphylla as a sovereign drug, the main active component of gynostemma pentaphylla is saponin, and thus total saponin is determined as a marker component. The gynostemma pentaphylla lipid-lowering tea disclosed by the invention is a Chinese herbal medicine compound preparation, the components are complicated, polysaccharide is a shared component in various kinds of traditional Chinese medicines, so that crude polysaccharide is determined as a marker component to control the product quality. Animal function tests and human feeding tests prove that the gynostemma pentaphylla lipid-lowering tea disclosed by the invention has the health function of assisting to lower blood lipid.

The invention relates to an intelligent outdoor on-pole vacuum circuit breaker and provides a novel outdoor on-pole vacuum circuit breaker which is large in volume and capable of meeting existing electric power system requirements and intelligent demands by adoption of a modular design and solid-sealed polar pole technology and an advanced on-line monitoring technology. The circuit breaker comprises a gas-filled casing, an electric spring operation mechanism, a cable duct, an insulation support, an electric flexible connection, a vacuum solid-sealed polar pole, a current transformer, an operating shaft, an insulation pull rod, a mechanism sealing cover and an aviation socket for secondary wiring, wherein the three-phase cable duct is arranged inside the gas-filled casing, the three-phase vacuum solid-sealed polar pole is also sealed side by side inside the gas-filled casing correspondingly, the conductive portion of the cable duct is connected with a dynamic end of a vacuum arc extinguish chamber through the electric flexible connection, and the cable duct and the solid-sealed polar pole are fixed on the insulation support. The circuit breaker has the advantages that the vacuum arc extinguish chamber which is the main component of the vacuum circuit breaker is a solid-sealed polar pole type chamber, so that the work amount during assembly is reduced, the product quality control is effectively improved, and the product manufacturing period is shortened.

The invention discloses a female-male slider demoulding, detection and packaging integrated device for plastic gloves. The integrated device comprises a transition-manipulator, a rotation swing frame, a demoulding head, a camera detection bench and glove-removal sorting machine, the rotation swing frame is fixedly connected to the transition-manipulator, the demoulding head is arranged on the rotation swing frame, the camera detection bench is arranged over the transition-manipulator, and the glove-removal sorting machine is arranged at right side of the transition-manipulator. The demoulding, detection and packaging integrated device for plastic gloves has the advantages that structure is simple and compact, execution motion is continuous and smooth, product nondestructive test is realized, automation degree is high, and reaction speed is fast, so that control system design is more simple, automation degree of a production line of the plastic gloves can be greatly increased, product quality control is improved, and artificial cost is obviously reduced.

The invention discloses a forming method of a high-precision hyperboloid titanium alloy cylinder and belongs to the technical field of cylindrical part forming. The method comprises the steps that a titanium alloy plate is cut according to the plane unfolding size of the cylinder, and the cut plate is rolled into a cylindrical part by adopting a roll welding process; the obtained cylindrical partis placed outside an expansion valve of a stress relaxation forming tool, and then an expansion core is placed into the expansion valve; the assembled cylindrical part, expansion valve and expansion core are placed in heat treatment equipment, and heating is carried out for stress relaxation forming; and the temperature is reduced after forming is finished to obtain the high-precision hyperboloidtitanium alloy cylinder. By adopting the stress relaxation forming mode of the expansion core and the expansion valve, the forming thought limitation of the cylindrical structural part is broken through, the technical problem that the quality of the titanium alloy cylindrical structural part is difficult to control in the semi-forming process is successfully solved, the quality control of the product can be improved, the stability of the product is improved, the production cost is reduced, a brand-new optimized process method is provided for the production of the titanium alloy cylindrical structural part, and the method is suitable for the cylinder forming process.

The invention discloses a composite self-emulsifying soft haematococcus pluvialis astaxanthin capsule as well as a preparation method and an application thereof. The soft capsule comprises a capsule core and a capsule wall, and the capsule core contains haematococcus pluvialis astaxanthin or haematococcus pluvialis astaxanthin extract, vegetable oil, an emulsifier, a co-emulsifier and an antioxidant. The vegetable oil, the antioxidant and haematococcus pluvialis astaxanthin are stirred uniformly, a mixed emulsifier is prepared from an obtained solution with the emulsifier and the co-emulsifier, uniform stirring and filtration are performed, and a self-emulsifying system is obtained; a soft capsule material liquid and the self-emulsifying system are added to a soft capsule making machine, and the composite self-emulsifying soft haematococcus pluvialis astaxanthin capsule is obtained. The soft capsule is prepared from haematococcus pluvialis astaxanthin and the optimized vegetable oil byreasonable combination, has high dispersibility and excellent storage stability, and can enhance anti-fatigue ability and learning and memory ability of an aging model rat, improve activity of SOD (superoxide dismutase) in gastric tissue, reduce MDA (malondialdehyde) content and scavenge free radicals in vivo.

The invention relates to the technical field of automobile hub bearing units, and discloses a hub bearing unit riveting reliability evaluation device. The device comprises an axial loading device anda hub bearing fixing device, and is characterized in that the hub bearing fixing device is provided with a transverse loading device, and the transverse loading device is perpendicular to the output end of the axial loading device; and a detection device is arranged on the axial loading device. The invention discloses a method and device for evaluating the riveting reliability of a hub bearing unit. The method starts from the actual use working condition of the hub bearing unit; limit use conditions of the wheel hub bearing in a loading state are simulated; the displacement sensor is used forvisually and clearly representing the variation of the position of the inner ring, so reliability judgment is carried out, evaluation indexes are clear, the evaluation method is simple, efficient andhigh in accuracy, and the blank of visual evaluation standards and methods for the riveting reliability of the hub bearing unit is filled up.

The invention discloses a surface metallization process of a 5G antenna oscillator. The surface metallization process comprises the following steps that (1) an oscillator body with a preset structureis manufactured through injection molding; (2) laser carving treatment is carried out on an electroplating area on the surface of the oscillator body, the area, needing to be metalized, of the surfaceof the oscillator body is deeply activated through laser carving, and electroplating can be achieved; (3) the surface of the oscillator body subjected to laser carving is ultrasonically cleaned; (4)the electroplating area of the surface of the oscillator body is subjected to copper electroplating treatment, and a copper plated layer is formed on the electroplating area of the surface of the oscillator body; (5) the oscillator body is subjected to mist tin electroplating treatment, and a tin plated layer is formed on the surface of the copper plated layer; and (6) the oscillator body is subjected to tin protection treatment, and a tin protection agent is sprayed onto the tin plated layer. In the surface metallization process, the procedures of nickel chemical plating and nickel deplatingare omitted, the procedure of surface metallization of the antenna oscillator is simplified, the time taken by the metallization process is reduced, production efficiency is improved, material waste is avoided, and the production cost of enterprises is reduced.

The invention relates to a gear speed changing box, in particular to a speed changing box of a gear. The gear is formed by laminating a plurality of quenched sheet parts with teeth, and gaps of the gear are filled with a metal solution. The speed changing box comprises a box body, a shaft and the gear, the shaft is installed in the box body, and the gear is arranged on the shaft. The gear speed changing box is characterized in that the gear is a multilayer gear; the gear comprises a gear body, and the gear body is formed by laminating the multiple quenched sheet parts with the teeth; at least one connecting hole is formed in each sheet part, the connecting holes are laminated to form a through hole after the sheet parts are laminated, and the connecting holes are fixedly connected into the gear body through connecting pieces; and then the gear body is soaked into a metal solution, the gear body is taken out from the metal solution to be cooled, the metal solution solidifies into metal to be injected into the positions between the sheet parts of the gear body and the surface of the gear body, and the technical aim of rapidly manufacturing the gear with the high physical property in a low-cost manner is achieved.

The invention relates to the technical field of semiconductors, and discloses a defect detection device and method for a semiconductor chip. The defect detection device for the semiconductor chip comprises an image acquisition module which is used for acquiring a high-definition image of the semiconductor chip and transmitting the high-definition image to a defect identification module; the defect identification module is used for receiving the high-definition image, identifying the position of a potential defect in the high-definition image by adopting an image identification technology and automatically marking in the high-definition image; according to the invention, by using the high-definition image acquisition module, a high-resolution chip image can be obtained, which provides conditions for identifying tiny or low-contrast defects. And the defect identification module automatically marks the defect position by using an image recognition technology, so that the accuracy and the automation level of detection are improved.

The invention belongs to the technical field of textile printing and particularly relates to a digital printing process of an artificial cellulose fiber fabric. The digital printing process comprisesthe following steps of preparing of a digital printing pretreatment agent, padding of the pretreatment agent, digital printing spray printing, steaming, washing and drying. The digital printing pretreatment agent comprises, by weight, 1-3 parts of a thickener, 7-25 parts of urea, 0.5-2 parts of printing alkali, 0.5-2 parts of an antioxidant and the balance water. According to the process, the antioxidant is added to the pretreatment agent, so that the problem of yellowing of the fabric caused by oxidation in the drying or steaming process under the alkaline condition of the phenolic substancescan be effectively prevented. Compared with a digital printing process in the prior art, the whiteness of the fabric produced by the digital printing process of the artificial cellulose fiber fabricis remarkably improved, the fabric printing gradation is clear, the stereoscopic impression is remarkable, and the product color is bright. The digital printing process has the beneficial effects of simple process, easy operation and convenient product quality control.

A process for preparing the nanoparticles of phthalocyanine sensitized TiO2 by in-situ hydrothermal method includes such steps as perparing the precurse liquid of TiO2 nanoparticles, and adding phthalocyanine as sensitizer while preparing TiO2 nanoparticles in hydrothermal condition. Its advantages are high dispersity and stability, high visual light catalytic activity and broadband.

The invention discloses a method for preparing cnidium lactone from plant and an application thereof in the preparation of cosmetics. The method first pretreats plant fruits containing cnidium lactone, and steps, such as ethanol extraction, liquid-residue separation, crude cnidium lactone precipitation, accurate-concentration ethanol crystallization and recrystallization, are then carried out, and thereby the active ingredient of cnidium lactone monomer is obtained. Not only can the method provided by the invention effectively remove impurities, the transfer rate of cnidium lactone is high. The obtained ingredient has functions such as inhibiting bacteria and resisting inflammation, killing parasites to relieve itching, resisting allergy, relieving spasm and decreasing pressure, resisting arrhythmia and enhancing immunity, and the ingredient can be prepared into emulsion systems and surfactant systems as cosmetic and skin-care products with the effects of resisting allergy, killing parasites to relieve itching, inhibiting bacteria and resisting inflammation, eliminating acnes and the like.