545results about How to "Improve long-term effect" patented technology

The invention relates to an inorganic / organic nano-composite antibacterial and application of fiber product thereof. 0.01-20 proportions of inorganic antibacterial, 0.01-35 proportions of organic antibacterial, 0.0001-0.4 proportion of inorganic / organic antibacterial compatibility finishing agent, 0.05-40 proportions of macromolecule bond, 0.0001-0.4 proportion of stabilizer that prevents color change of the inorganic antibacterial, 0.1-30 proportions of high efficiency emulsifying agent and 100 proportions of distilled water are added in sequence by weight proportion, wetted, dispersed, ground, dispersed at high-speed, stirred, etc., so as to acquire the nano-composite antibacterial. The antibacterial can process the fiber product by a dip-dye method, a roll-dye method, a spray method, etc. Dresses, socks and socks, blankets, beddings, gowns, patient wears, masks, medicinal gauzes, air filtering nettings, etc., made from the inorganic / organic nano-composite antibacterial of the invention are characterized by high antibacterial efficiency, rapid antibacterial function, long lasting antibacterial performance, laundering durability, etc., and the inorganic / organic nano-composite antibacterial of the invention is applicable to life, medical care, etc., and has the functions of preventing the occurrence and transmission of diseases, protecting the health of people and improving life quality.

The invention relates to a solvent-free organic silicon pressure-sensitive adhesive. The organic silicon pressure-sensitive adhesive comprises the following components in part by mass: 100 parts of polydimethylsiloxane of which the end group is alkenyl; 1 to 300 parts of polydimethylsiloxane of which the end group is hydroxyl; 1 to 50 parts of MQ resin, 1 to 30 parts of polyisobutylene, 20 to 200 parts of diluting agent, 0.1 to 5 parts of crosslinking agent and a platinum catalyst capable of curing the organic silicon pressure-sensitive adhesive. The invention also relates to a preparation method of the organic silicon pressure-sensitive adhesive. The organic silicon pressure-sensitive adhesive has the characteristics of high initial tack, long residual action, proper peeling strength, drug penetration and the like, is nontoxic, environmentally-friendly and reusable, and can be prepared into pressure-sensitive adhesive tapes, medical pressure-sensitive adhesive strips and other functional materials requiring the pressure-sensitive performance.

The utility model discloses an inorganic composite antimicrobial with zinc - rare earth and a preparation method and applications thereof. The antimicrobial uses natural or chemosynthetic ion exchange material as the carrier, and loads the double active centre of the zinc ions and the rare earth ions by an ion exchange method, wherein, the content of the zinc ions is 6.0 to 8.0wt%, the content of the rare earth ions is 2.0 to 4.0wt%. The antimicrobial exchanges the zinc ions and the rare earth ions into the carrier by means of a liquidoid or a solidoid ion exchange, and then the inorganic composite antimicrobial is prepared after a post treatment. Because having a double antimicrobial active centre of the zinc ions and the rare earth ions which can generate a synergistic effect, the antimicrobial has the advantages of broad antimicrobial spectrum, higher antimicrobial efficiency, good thermal stability and photostability, steady color and low cost; the antimicrobial is an ideal substitute for the silver-loaded inorganic antimicrobial, and can be added in plastic, rubber, fiber, paints, adhesive, paper or ceramic and other material for preparing antimicrobial functional material and products.

The invention discloses a method for treating chlorinated organic pollutants in underground water by using a slow-release compound repair material. The method comprises the following steps: (1), preparing charcoal through high temperature pyrolysis; (2), pre-treating zero-valent iron through acid pickling; (3), adding water into the charcoal, then adding xanthan gum and an organic carbon source, and finally, adding zero-valent iron, and through steps of treating, obtaining the slow-release compound repair material; then treating chlorinated organic pollutants in underground water by adopting an in situ injection repairing method or an in situ PRB repairing method. According to the method provided by the invention, the xanthan gum with high mechanical strength and strong mass transfer performance is used as a novel slow release embedding medium, the physical adsorbent charcoal, the chemical reductant zero-valent iron and the bioreductive drug organic carbon source are taken as effective components for composite embedding, so that gel microspheres with stable structures are formed, and the method provided by the invention has the advantages of sustained release, simple and convenient operation, low cost, environment friendliness and the like, can effectively achieve physically, chemically and biologically collaborated and enhanced remediation, and can effectively remove target pollutants.

The invention provides a copper-rare earth compound antimicrobial agent and a preparation method and an application thereof. The antimicrobial agent is compound carrier prepared by chemically-synthesized sodium zirconium phosphate and natural tourmaline according to the weight ratio of 1.2-5.7:1 and loaded by copper ions and rare earth ions by an ion exchange method, wherein the content of the copper ions is 3.4-9.0wt percent, the content of the rare earth ions is 1.5-4.5 wt percent, and the rare earth comprises La, Ce, Nd, Sm and Eu. The preparation method comprises the steps of exchanging the copper ions and the rare earth ions into the carrier through a liquid phase or solid phase ion exchange method and preparing the compound antimicrobial agent through proper post treatment. Containing three antimicrobial active centers of the copper ions, the rare earth ions and negative ions, which can generate synergistic effect, the compound antimicrobial agent has the characteristics of better thermal stability and light resistance, stable color and low cost, and can be added to materials such as plastics, rubber, fiber, coating, bonding adhesive, ceramics and the like for preparing antimicrobial functional materials and products.

The present invention relates to novel, topically applied, cosmetic / dermatological compositions for the treatment of hyperpigmentation disorders and photodamaged human skin. The subject compositions combat hyperpigmented skin. In addition, the compounds described can be used in the treatment of many other pathologies. Due to a high degree of gentleness, along with potent antioxidant and moisturizing effects, the present invention can be used safely in the treatment of many conditions, such as the prevention and / or treatment of melasma, freckles, age spots (lentigo senilis) and photodamaged skin.

The invention relates to a multi-channel light stimulation-based cochlear implant device. The device comprises a multi-channel light stimulation device, a multi-channel light pulse control circuit, a voice signal acquisition deice and a voice signal processing and encoding device, wherein the device acquires a voice signal and encodes the voice signal into a light stimulation signal; and the light stimulation signal stimulates cochlear auditory nerve through a cochlea-implanted multi-channel light pulse output port to cause nerve impulse so as to form hearing in a central nervous system. The multi-channel light stimulation-based cochlear implant solves the problem of compatibility of a stimulating electrode and biological tissue in the electronic cochlear implant and also solves the problem of mutual interference between stimulating channels caused by current diffusion in the tissue.

The invention discloses a long-acting melt-blown polypropylene composite electret material for mask melt-blown cloth and a preparation method of the long-acting melt-blown polypropylene composite electret material. The long-acting melt-blown polypropylene composite electret material comprises the following components in parts by weight: 100 parts of polypropylene resin, 0.1 to 10 parts of a fluorosilicone polymer, 0.01 to 2 parts of an inorganic charge enhancer, 0.1 to 2 parts of a lubricant, and 0.01 to 0.3 part of an antioxidant, wherein the fluorosilicone polymer is fluorine-containing polysiloxane taking a silicon-oxygen bond as a main chain and fluoroalkyl as a side chain. In the long-acting melt-blown polypropylene composite electret material for mask melt-blown cloth, a silicon-oxygen main chain of the fluorosilicone polymer is smooth, increase of the charge injection depth can be facilitated, a fluoroalkyl side chain promotes charge capture, meanwhile, dipole directional arrangement is generated, a main chain can be masked, a cloth cover is endowed with good hydrophobicity, the material has a good electret effect, and the long-term effect of the material is effectively improved. Moreover, the fluorosilicone polymer is low in melting point and is uniformly dispersed, so that the melt-blown polypropylene composite electret material is relatively simple to process and form.

A Chinese medicine in the form of fluid extract for losing weight and decreasing fat is prepared from 12 Chinese-medicinal materials including rhubarb, cassia seed, haw, lotus leaf, etc and additives. Its product can be made into tooth-paste, massage cream, and capsule or softgel. Its preparing process is also disclosed.

The invention provides a high-efficiency and humidity-resisting catalysis technology for removing formaldehyde at room temperature and relates to the field of catalysis and environmental protection. The catalysis technology is characterized in that honeycomb ceramic is used as a carrier, preloading mesoporous cerium dioxide (CeO2) is used as a basal body, and a back loading platinum (Pt) is used as an active component. The mesoporous CeO2 is characterized in that the diameter of every meso pore is 0.5-3nm. The weight ratio of the Pt to the CeO2 is 0-5 percent. The integral catalyst provided by the invention is high in efficiency and stability and has no side effects under a real environment with room temperature and normal humidity, and can be widely used for removing formaldehyde pollutants in various microenvironments.

The invention provides an integral nano material with high-efficiency completely removing formaldehyde in air at room temperature and broad-spectrum long-acting antibacterial property at same time, relating to the field of catalysis and environmental protection. The material is characterized in that: honeycomb ceramic is used as a carrier, first loaded channel silver-doped hollandite type crystalline TiO2 is used as a matrix, and a post loaded Ag-Pt alloy is used as an active component. The doped TiO2 matrix is characterized in that: the general formula can be expressed as Ag*(A)y[MzTi8-z]O16(M=Mg2+, Zn2+; A=K+, H+; x is less than or equal to 2; y is less than or equal to 2; z is less than or equal to 3), [MzTi8-z]O16 represents the composition of the TiO2 skeleton, and Ag*(A)y represents the composition of the TiO2 channel. The weight ratio of the Ag-Pt system to TiO2 is about 0-10%, wherein, the weight ratio of Ag to the Ag-Pt system is 0-100%. The integral nano material provided by the invention can completely remove formaldehyde air at room temperature and in ambient humidity, has long-acting, high efficiency and stable broad-spectrum antibacterial property, capable of being widely used for preparing various air purifiers and microbiological treatment devices.

The invention relates to the technical field of biological fertilizers, in particular to a biological organic fertilizer and a method for preparing the same. The biological organic fertilizer is mainly made of raw materials including, by weight, 50-80 parts of animal feces, 40-60 parts of crop straw, 10-25 parts of wheat bran, 5-20 parts of peanut bran, 10-30 parts of rice bran, 10-25 parts of biogas residues, 15-30 parts of plant ash, 2-10 parts of brown sugar, 1-5 parts of microbial nutrient solution and 1-10 parts of starter culture. The biological organic fertilizer and the method have the advantages that soil properties of soil can be improved, the resource utilization rates can be increased, and the biological organic fertilizer and the method are environmentally friendly and are free of pollution; abundant balanced nutrition can be provided for crops, accordingly, the yield of the crops can be effectively increased, and the quality of the crops can be effectively improved.

The present invention provides a liquid for preserving cornea for medium period and a preparing method thereof, and relates to a liquid for cornea material. The invention provides the liquid for preserving cornea for medium period and the preparing method thereof, wherein the liquid has the advantages of longer storing time, higher quality, no pollution and relatively lower cost compared with theprior liquid for preserving cornea for medium period. The liquid for preserving cornea for medium period contains culture solution, thickening agent, bovine serum, amino acid, antibiotic, acid-alkalimodifying agent and cell nutrition components. According to the formula of liquid for preserving cornea for medium period, the thickening agent, the bovine serum, the amino acid, the antibiotic and cell nutrition components are added into the culture solution for mixing to uniform. The pH value is adjusted to 7.2-7.4 with the acid-alkali modifying agent. The osmotic pressure is adjusted to 350-380mOsm / L with an osmotic pressure buffering agent. The liquid for preserving cornea for medium period is obtained after membrane filtering for sterilizing.

The invention relates to self-repairing type ultraviolet light cured anti-doodling resin and a preparation method thereof. According to the preparation method, diisocyanate, dihydric alcohol, hydroxyl silicone oil, a long-chain alkane chain extender, a hydroxyl acrylate monomer, a polymerization inhibitor, an active diluter dispersed nano particle and a light initiator are adopted as main raw materials to synthesize the ultraviolet light cured resin with a self-repairing function. A film coating formed after being coated by adopting the anti-doodling resin provided by the invention is good in surface uniformity, high in hardness and good in abrasion resistance; stains caused by a doodling substance, a contaminant and the like can be easily wiped off; most importantly, after the surface of the film coating is subjected to physical abrasion, a long-chain alkane hydrophobic substance in the resin can migrate to the surface in wet and heat conditions to voluntarily repair the damaged surface; the antifouling property of the film coating is recovered.

The invention discloses a method for preparing microcapsule essence for cigarette. Essence for cigarette is used as a main raw material, and the main raw material, auxiliary raw materials such as glycerol, propylene glycol and the like and a proper wall material are prepared into microcapsule granules by the following method of: mixing and stirring core materials such as the essence for cigarette, the glycerol, the propylene glycol and the like uniformly, adding 95 percent edible ethanol in an amount which is 1 to 5 times that of the core materials, adding a proper amount of wall material, stirring and dispersing uniformly, then continuously stirring for 1 to 10 hours at normal temperature, filtering, drying the sediment in a drying oven at the temperature of between 30 and 60 DEG C for 1 to 48 hours, and crushing and screening to prepare the microcapsule granules. According to the technical scheme of the invention, the application of the essence for cigarette is more flexible, the transportation is more convenient, and deterioration and taste change of the essence for cigarette in the use and storage processes are effectively avoided.

The invention relates to an organosilicon concrete protectant and a preparation method thereof, and belongs to the technical field of concrete additives. The organosilicon concrete protectant is prepared by the following steps of: adding an alkyl silane oligomer, an emulsifying agent, an amino silane tackifier and water into a mixer, stirring at the temperature of between 50 and 70 DEG C for 2 to 4 hours, and cooling to normal temperature. Because the alkyl silane oligomer has small molecular structure and strong permeability, the alkyl silane oligomer can effectively permeate concrete and is quickly cross-linked with moisture absorbed by the concrete into macromolecular siloxane, capillaries and pores in the concrete are not blocked, and air and steam can freely enter and exit the concrete structure; therefore, the concrete has good hydrophobicity and air permeability. The organosilicon concrete protectant solves the problems that the conventional concrete protectant forms a macromolecular organic coating film on the surface, and when the concrete is subjected to high temperature, the protectant coating is easy to bubble, crack, peel and fall off. The service life of the concrete material is greatly improved.

The invention relates to the technical field of the preparation of polypropylene, and in particular relates to an insulation heat conduction polypropylene composition for a light emitting diode (LED) lamp. The insulation heat conduction polypropylene composition consists of the following raw materials by weight percent: 20 to 60 percent of polypropylene resin, 20 to 60 percent of heat conducting agent, 5 to 30 percent of fire retardant, 1.2 to 10 percent of fire-resisting synergist, 0.3 to 2 percent of lubricant, 0.1 to 1 percent of sorbitol nucleating agent, 0.2 to 3 percent of silane coupling agent or titanate coupling agent, 0.1 to 0.5 percent of main antioxidant, 0.1 to 0.5 percent of auxiliary antioxidant and 0.1 to 0.5 percent of light stabilizer. The flame resistance of the polypropylene composition can reach V0, the heat conduction coefficient is about 0.7, the insulation performance and the heat conduction performance are good, the heat radiation requirement of the LED illumination lamp can be met, and the insulation heat conduction polypropylene composition is suitable for extruding and molding a light emitting diode (LED) heat radiating lamp holder and has the characteristics of easiness in machining, long efficiency, high heat conduction performance.

The invention discloses a planting method for high-quality selenium-rich rice. The method includes the following steps of firstly, preprocessing a rice field, wherein a field where broad beans are planted is selected, and green manuring, irrigation, wet compositing, rotary tillage and harrowing and ridging are conducted after broad beans are picked; secondly, transplanting rice seedlings; thirdly, conducting tillering and fertilizer applying; fourthly, stocking ducks; fifthly, conducting full heading and fertilizer applying, wherein ducks are driven out after full heading is conducted on the seedlings, the water depth of the rice field is kept at 9-11 cm, 1-3 kg of urea, 1-2 kg of potassium metasilicate and 100-280 kg of organic selenium fertilizer aqueous solution are applied in a dressing mode in each mu of field, the weight ratio of organic selenium fertilizer to water is 1 to 500-700, and the selenium content in organic selenium fertilizer is 0.1-0.3 mg / kg; sixthly, conducting harvesting. Planted rice is high in selenium element content, good in quality and high in yield.

The invention relates to a granular type compound microbial bacterial agent which comprises the following components in percentage by weight: 80-90 percent of powdered compound microorganism bacterial agent, 8-14 percent of phosphate rock powder and 2-6 percent of trace element, wherein the powdered compound microorganism bacterial agent is prepared by adsorbing zymocyte fluid with a single strain respectively with a medical stone, and the strains are bacillus subtilis, bacillus megateria and bacillus mucilaginosus. The invention also provides a preparation method and application of the granular type compound microbial bacterial agent. The invention provides a good carrier for the production of microbial bacterial agent granules; the medical stones have various characteristics of good adsorbability, leachability, mineralization, bioactivity, and the like and provide good carriers for the adsorption of the microbial bacterial agent; a produced fertilizer has better appearance, and the intensity of the fertilizer is obviously enhanced; and the invention greatly improves the utilization rate and the long-term effectiveness of the fertilizer and is beneficial to storing and transporting products.

The invention discloses an adsorption decomposition agent. 90 to 95 mass percent of bamboo charcoal grains and 5 to 10 mass percent of tourmaline grains form a base material; and titanium dioxide sol serving as photo-catalyst, which accounts for 10 to 20 percent of the total weight of the base material, is added into the base material and is used as an additive. The invention also discloses a preparation method for the adsorption decomposition agent, which comprises the following steps of: 1) performing ball-milling and mixing on the base material to obtain a dry powdery material; 2) adding the titanium dioxide sol serving as the photo-catalyst into the dry powdery material for ball milling and mixing to obtain a mixture; and 3) drying, sieving and thermally processing the mixture to obtain the adsorption decomposition agent. The adsorption decomposition agent has the characteristics of high adsorption, catalytic decomposition in the presence of light and antibacterium.

The invention discloses special fertilizer for cultivating kiwi. The special fertilizer comprises the following ingredients in parts by weight: 50 to 80 parts of urea, 60 to 100 parts of ammonium dihydrogen phosphate, 10 to 35 parts of monopotassium phosphate, 30 to 50 parts of potassium sulfate, 20 to 40 parts of potassium nitrate, 15 to 25 parts of calcium nitrate, 5 to 20 parts of magnesium sulfate, 120 to 200 parts of an organic fertilizer, 0.5 to 1.2 parts of copper sulfate, 0.5 to 2 parts of ferrous sulfate, 0.2 to 1 parts of magnesium sulfate, 5 to 15 parts of sodium borate, 0.6 to 2 parts of zinc sulfate, 0.8 to 1.5 parts of sodium selenate, 0.8 to 2 parts of ammonium molybdate, 10 to 35 parts of astragalus smicus, 5 to 10 parts of amino acid and 1 to 5 parts of soil conditioner. The special fertilizer is scientific in formula, complete in nutrients, capable of improving the growth of kiwi, increasing the yield of the kiwi, improving the quality of kiwi fruits and preventing soil hardening, high in fertilizer utilization rate and capable of protecting the environment.

The invention discloses a silt retaining and consolidating method for use in debris flow gully ecological engineering and use thereof. The method comprises: planting a plurality of brush woods for increasing the roughness of the gully bed in a silt transfer area between a debris flow flowing area and a silt settling area in the gully; planting bank-protecting and scouring-preventing forest at the foot of a slope of the gully along the bank of the gully for preventing flowing water from scouring the silt on the bank of the gully; and planting arbor and bush combined improved protection forest in the silt settling area to improve the impact strength of soil body. When the method is used, the use of other civil engineering measures in combination is determined according to the occurrence frequency of debris flow. Compared with the prior art, the method can effectively retain, consolidate and improve the silt in the silt transfer area, on the gully slope and in the silt settling area in the debris flow gully, consolidate and improve retained and deposited silt while reducing silt sources, improve the self-stability of the silt soil body in the silt settling area, strengthen the sand control capability of the gully and improve the landscape of the gully.

The invention discloses a mistura with effects of resolving hard mass and promoting lactation and a preparation method thereof, belonging to the field of traditional Chinese medicine. The composition is used for treating postpartum hypogalactia and breast milk silting-up and prepared by the following raw materials according to parts by weight: 30 parts of membranous milkvetch root, 15 parts of Chinese angelica, 15 parts of largehead atractylodes rhizome, 10 parts of beautiful sweetgum fruit, 10 parts of Chinese thorowax root, 6 parts of bitter orange (stir-fried, broken), 6 parts of pangolin scales, 10 parts of cowherb seed, 10 parts of uniflower swisscentaury root, 6 parts of Szechuan lovage rhizome, 15 parts of pilose Asiabell root, 10 parts of akebia stem, 10 parts of liquoric root and 600 parts of front pig trotters, the front pig trotters are stewed, then soup is used for decoction, and the mistura is prepared by concentration, bottling and disinfection. The invention can also make the addition and the subtraction based on the basic formula according to the symptoms. The mistura has low price, simple operation, convenient administration and no toxic side effects. The mistura can be made by patients, the cure rate for a variety of lack of milk, rare breast milk and breast duct blockage is 98.2 percent and the total effective rate is 100 percent. Compared with the other drugs at present, the effect is extremely significant.

The invention relates to a high-efficiency monatomic silver nanowire antibiotic material which is characterized in that the monatomic silver nanowire of the antibiotic material extends from the orifice of a framework-doped manganese dioxide molecular sieve into a hole. The manganese dioxide molecular sieve is characterized by being of a hollandite type crystal structure; and the hole contains the monatomic silver nanowire or / and A ions (A=K<+>, Na<+> or H<+>). The chemical general formula can be expressed as Agm(A)n[MxMn8-x]O16 (M=Mn<2+> / <3+>, Zn<2+> and Ti<4+>; A=K<+>, Na<+> or H<+>; m<=3; n<=2; and x<=2), [MxMn8-x]O16 represents the framework composition of the manganese dioxide molecular sieve, and Agm(A)n represents the hole composition of the manganese dioxide molecular sieve. By mainly using the sterilization mechanism of catalytic activated oxygen, silver of the monatomic silver nanowire antibiotic material is not consumed in the sterilization process. Based on the synergetic effect of the quantized monatomic silver nanowire and the hollandite type manganese dioxide molecular sieve, the antibiotic material has extremely high oxygen activation performance, thereby leading to long-acting, high-efficiency and stable broad-spectrum antibiotic capability and having no adverse side effect on a human body. Thus, the antibiotic material can be widely used for preparing various antibiotic products such as paint, plastic, rubber, textile and the like.

The invention discloses a heat-resisting antibacterial thermoplastic polyurethane elastomer. The heat-resisting antibacterial thermoplastic polyurethane elastomer consists of the following components by weight percent: 25 to 40 percent of thermoplastic polyurethane, 10 to 20 percent of heat-resisting resin, 5 to 12 percent of antibacterial agent, 15 to 25 percent of polyolefin resin, 20 to 30 percent of filling oil, 1 to 10 percent of nano talcum powder, 0.4 to 3 percent of composite antioxidant and 0.1 to 2 percent of lubricating agent. According to the prepared heat-resisting antibacterial thermoplastic polyurethane elastomer, a heat-resisting agent is added, so that on the basis of guaranteeing the original high elasticity of the thermoplastic polyurethane elastomer, the heat resistance of the material is improved; and when the heat-resisting antibacterial thermoplastic polyurethane elastomer is applied to a bathroom accessory water pipe product, after being used at a high temperature for a long time, the fracturing phenomenon is avoided. By adding the antibacterial agent, the bacterial killing rate is high, the speed is high, the long-term efficacy is good, and the heat-resisting antibacterial thermoplastic polyurethane elastomer is applied to the fields such as bathroom hoses, tap water pipes and the like.

The invention provides a core pipe valve, and belongs to the field of valves. The core pipe valve is an original brand-new-structure valve, and refers to starting and stopping, pressure starting and stopping, adjustment, safety, decompression, returning stopping, pressure reduction, emergency cutting-off and the like. A valve element pipe is a fixing piece and coaxially penetrates through a sleeveI of a valve body, a valve body cavity and a sleeve II of the valve body; an axial partition is arranged in the middle of the valve element pipe, and two adjacent sides of the partition in the axialdirection are separately at least one radial circulating hole of a pipe section I and at least one radial circulating hole of a pipe section II; an annular valve element which surrounds the partition,an annular valve seat of at least one sleeve throat of the sleeve I and an annular valve seat of at least one sleeve throat of the sleeve II form a sealing pair; the difference between the outer diameters of the pipe section I and the pipe section II is greater than or equal to 0, the pipe section I is in shaft hole type fit with the sleeve I, the pipe section II is in shaft hole type fit with the sleeve II, and at least one combined portion is provided with a seal; and under the effect of two direction potential energy, the valve body axially moves in an axial direction relative to the valveelement pipe to implement starting and stopping and function transformation. The core pipe valve is simple in structure, convenient to manufacture, low in starting and stopping resistance and good insafety, reliability and sensitivity, and adapts to various working conditions, and the efficiency is improved.

The invention relates to an amniotic membrane long-term preserving fluid which is characterized in that 1000ml of preserving fluid contains 10g-200g of chondroitin sulfate and low-molecular-weight dextranum, 10g-50g of hydroxyethyl starch, 5ml-20ml of amino acid, 5ml-20ml of tobramycin, 10ml-50ml of HEPES, 5ml-30ml of ascorbic acid, 5ml-20ml of sodium pyruvate, and 860ml-970ml of culture solution. A preparation method of the amniotic membrane long-term preserving fluid comprises the following steps: adding the chondroitin sulfate, the low-molecular-weight dextranum, the amino acid, the tobramycin, the hydroxyethyl starch, the ascorbic acid and the sodium pyruvate into the culture solution and then uniformly mixing the mixture; using 1%-5% of HEPES to adjust pH value till the pH value is 7.2-7.4; using an osmotic pressure buffering agent to adjust the osmotic pressure till the osmotic pressure is 350-380mOsm / L; and performing membrane filtration and degerming, thereby acquiring the amniotic membrane long-term preserving fluid.

The invention provides a novel degradable stopper implanted through a guide pipe. The novel degradable stopper comprises a ball bag, a supporting rod and degrading liquid. The supporting rod is fixedly connected with the ball bag, the periphery of the supporting rod is wrapped by the ball bag, and the degrading liquid is a biological material which can be degraded and absorbed and is arranged in the ball bag in a filling mode to play a supporting effect. The invention further provides a conveying system of the novel degradable stopper implanted through the guide pipe. The conveying system comprises a long sheath, an inner core, a loader, a pushing rod and an infusion pipe. The stopper is made of degradable materials, foreign objects are not left in vivo, and a long-term effect is obvious. In addition, the stopper is of a ball bag type structure, and the inner filler of the stopper is temperature-sensitive hydrogel. When an abnormal defect is blocked, the stopper can be attached to the periphery of the defect completely, and especially a better blocking effect is achieved on irregular defects. The stopper can be suitable for blocking of the patent ductus arteriosus and can be made into a stopper suitable for atrial septal defects and a stopper suitable for ventricular septal defects through changing of the shape of the ball bag.

The present invention provides a heavy-duty graphene primer for ocean ships and a preparation method thereof. The primer is prepared by mixing a plurality of antirust pigments, fillers and solvents, such as modified epoxide resin, additives, nanoscale graphene, zinc powder and diphenyl guanidine chromate, with a modified amine and a polyamide, and has long-term corrosion resistance and also advantages unmatched by other graphene primers, including wide scope of application, convenience in construction, excellent electrical conductivity, and good self-repair performance and hydrophobic and oleophobic properties of the coating. In addition, the primer is air-dried at normal temperature, thereby saving energy and facilitating industrialization thereof.

The invention provides a protective fabric, a preparation method and application thereof. The protective fabric comprises an antistatic base cloth layer, a waterproof and moisture permeable layer, anantibacterial layer and an antiviral coating which are arranged in sequence. The material of the antiviral coating comprises a compound of graphene and nano titanium dioxide. The antistatic base clothlayer is obtained through a weaving method, then the antistatic base cloth layer is compounded with the waterproof and moisture permeable layer, then the antibacterial layer is obtained through a padding process, and finally the antiviral coating is sprayed. The protective fabric achieves performance balance in the aspects of antibacterial properties, antiviral properties, antistatic properties,waterproof and moisture-permeable properties and comfort level; the antiviral coating has photocatalytic oxidation bacteriostatic and antiviral activity, and cooperates with the antibacterial layer, so that the protective fabric has lasting, stable and broad-spectrum antibacterial and antiviral performance, the protective performance cannot be attenuated along with repeated washing, the protectivefabric has good performance stability and can be used repeatedly, the cost of protective clothing is effectively reduced, and the protective fabric is more energy-saving and environment-friendly.