140results about How to "Cut off contact" patented technology

The invention discloses a preparation method for a high-performance modified graphite negative electrode, and in particular discloses a preparation method for a graphite negative electrode of a lithium ion battery. The preparation method mainly comprises the following steps of: conducting procedures of liquid-phase even mixing, drying, roasting, screening and the like to water-soluble phenol-formaldehyde resin, an aluminum source and graphite negative electrode material to be modified to prepare a graphite negative electrode which is modified jointly by pyrolytic carbon and aluminum oxide, wherein the surfaces of the pyrolytic carbon are coated with phenolic resin. The modified graphite negative electrode material has the characteristics of being high in reversibility specific capacity, high in first-time charging and discharging efficiency, long in recycling life and good in safety property. The modified technique is simple to operate, low in cost, and obvious in modification effect.

The invention relates to an antibacterial health care spunlace fabric, in particular to a preparation method and application of a silk-ramie fiber spunlace non-woven facial mask base fabric. The silk-ramie fiber spunlace non-woven facial mask base fabric is prepared from the following raw materials including, by weight, 10-100% of silk-ramie fibers, 0-50% of real silk fibers, 0-50% of natural silk fibers, 0-90% of viscose fibers, and 0-70% of polyester fibers. The advantages of the silk-ramie fiber spunlace non-woven facial mask base fabric are that the silk-ramie fiber spunlace non-woven facial mask base fabric can clean skins, retain moisture, and protect skins, is high in sterilizing rate, is nonirritating, has a moisture preservation, cell activating, and oxygen supplying function, and can nourish and care skins.

The invention discloses a tea polyphenol composite coating preservative and a preparation method thereof. The composite coating preservative is prepared from the following raw materials according to mass concentration: 2.5-5.5% of collagen, 0.5-3.5% of glycerol, 0.5-4.5% of gelatin, 0.1-1% of tea polyphenol, and deionized water. According to the preparation method, tea polyphenol, collagen, gelatin, and glycerol are used as main raw materials to prepare the composite coating preservative, and then the preservative is spread on hawthorn fruits. After 20 day's storage at room temperature, researchers research changes of hardness, vitamin C, sensory quality, weight loss rate and other indexes of hawthorn fruits, so as to evaluate the preservation effect of the composite coating preservative on hawthorn fruits. The hawthorn fruit treated by the coating preservative changes more slowly in weight loss rate, sensory quality, hardness and vitamin C than the hawthorn fruit not spread with the coating preservative. The preservative effectively prolongs the shelf life of the hawthorn fruits. The coating preservative with best preservation effect is prepared from the following raw materials: 4.0% of collagen, 3.0% of gelatin, 0.2% of tea polyphenol, and 1.0% of glycerol.

The invention discloses a safe and effective privacy protection method of a P2P system, which comprises the steps of: dynamically establishing a state of trust relationship between a network entity and entities of other friendly nodes, wherein the friendly nodes are used as agencies for requiring and obtaining files mainly comprising files required by a requester; sending the files to a provider through the friendly nodes of a resource provider; sending a public key certificate and a global trust value to the requester through the friendly nodes of the requester by the provider; once the resource provider of the files is selected, generating a symmetrical secret key, encrypting a public key of the provider and then sending the encrypted public key to the node of the provider through the friendly nodes; and encrypting the files by the resource provider by using the symmetrical secret key and sending the files to a request node through the friendly nodes. The invention conceals the identifies of a resource requester and a sender through an agency way, thereby blocking the relation between a source and the content of the files, and effectively protecting the privacy of the resource requester and the resource provider.

The invention discloses a repaglinide tablet and a preparation method thereof, belonging to the new technical field of medicines. The repaglinide tablet mainly contains repaglinide and is prepared by a solid self-emulsifying technology, wherein the tablet further contains a diluent, an emulsifier, an assistant emulsifier, an adsorbent, filler, a disintegrating agent and a lubricant. The repaglinide tablet overcomes the instability of repaglinide, has the advantages of improved dissolution rate of repaglinide and enhanced treatment effect and has ideal treatment effect.

The invention discloses a composite intumescent flame retardant and a preparation method thereof. The composite intumescent flame retardant is composed of 83.33-99.67 wt% of an intumescent flame retardant and 16.67-0.33 wt% of sodium oleate-modified lauryl sodium sulfate intercalated calcium magnesium aluminum hydrotalcite. According to the invention, Ca<2+>, Mg<2+>, Al<3+> and other cations are utilized to perform cation replacement modification on hydrotalcite, dodecyl sulfate and other anions are utilized to perform interlayer intercalation modification on hydrotalcite to expand interlayerspacing and improve the flame retardancy of the hydrotalcite flame retardant, and the hydrotalcite flame retardant is compounded with the intumescent flame retardant to form a synergistic flame-retardant system, so the flame retardancy of the composite flame retardant is improved, and the mechanical property of a polymer added with the flame retardant is also synergistically guaranteed.

The invention relates to a biodegradable agricultural film with a weeding effect and further relates to a preparation method of the biodegradable agricultural film with the weeding effect. The biodegradable agricultural film is prepared from components in parts by weight as follows: 30-80 parts of poly adipic acid/butylene terephthalate, 0-30 parts of polylactic acid, 10-70 parts of papermaking waste, 0-30 parts of starch and 0.5-15 parts of an auxiliary. The biodegradable agricultural film with the weeding effect has the advantages as follows: the papermaking waste is added to a degradable material, and production cost of master batch for the biodegradable agricultural film with the weeding effect is substantially reduced; the papermaking waste is effectively utilized, and environment stress is reduced; the biodegradable agricultural film which is compounded with the papermaking waste and has the weeding effect has low light transmittance, high light resistance and good weeding property and can prevent weeds from being contacted with light, so that photosynthesis of the weeds can be prevented.

The invention discloses a marine environment concrete crack repair material which is prepared from the following components in parts by weight: 30-50 parts of Portland cement, 10-30 parts of desaltedsea sand, 5-15 parts of abandoned sea fish, 10-30 parts of crustacean exoskeleton, 4-10 parts of silica fume, 2-5 parts of a corrosion inhibitor, 0.5-2 parts of an early strength agent, 5-10 parts ofan expanding agent and 0.1-0.5 part of polypropylene fiber. The above materials are suitable for marine environment concrete crack repair and can ensure the long-term marine environmental concrete service after being filled.

The invention discloses a papaya anti-oxidant serum, which comprises cyclodextrin inclusion compound of pawpaw natural antioxidant and carriers accepted in pharmacy. The papaya anti-oxidant serum consists of enzymolysis water extract and alcohol extract of the papaya, in which vitamin C and polyphenols are contained. Vitamin C contained in papaya anti-oxidant serum is no less than 2 milligram per gram, and the total polyphenols calculated in gallic acid is no less than 22 milligram. Therefore, the papaya anti-oxidant serum has the characteristics of high efficiency, durability and stable inoxidizability and easy storage and carrying, can be served as health food to eat, can used as cosmetics, animal food, food or medical mediate, and further can used for preparing antioxidation products; the invention also discloses a preparation method for the papaya anti-oxidant serum, which comprises seven steps of pulping, enzyme digestion, filtering, alcohol extraction, concentration, inclusion and pelletization, so as to be a system for efficiently, sufficiently and completely extracting papaya anti-oxidant, and the antioxidative activity can be effectively preserved.

The invention discloses a hydraulic ceramic brick press for prolonging the service life of hydraulic oil. The hydraulic ceramic brick press comprises a liquid charging oil tank used for storing hydraulic oil, wherein the liquid charging oil tank is connected with a compressed nitrogen source and vacuum-pumping equipment by pipelines, compressed nitrogen enters the liquid charging oil tank through the pipelines, and the nitrogen pressure in the liquid charging oil tank is higher than the atmosphere pressure. The invention also discloses a method for prolonging the service life of the hydraulic oil. The method is characterized in that air in the hydraulic oil-filled liquid charging oil tank of the hydraulic ceramic brick press is pumped out, and the liquid charging oil tank is inflated with the nitrogen so as to enable the nitrogen pressure in the liquid charging oil tank to be higher than the atmosphere pressure. The invention has the advantages of slowing down the aging process of the hydraulic oil, prolonging the service life thereof and reducing the frequency of replacing the hydraulic oil of the hydraulic ceramic brick press, thereby saving a great amount of hydraulic oil; and the manufacturing cost of the compressed nitrogen source is much lower than the hydraulic oil, and therefore the invention has great economic benefit. Besides, the invention does not need to make a large amount of modification to the existing brick press, thereby being easy to be popularized and implemented.

The invention discloses a manufacturing method for an interior wall ceramic tile with a metallic luster layer. Before the interior wall ceramic tile is plated with the metallic luster layer, an isolation layer which has adhesive force to a glaze surface, can effectively block combination of the metallic luster layer and the glaze surface and can be removed with water is arranged at the portion where the metallic luster layer does not need to be reserved, polishing, waxing and other steps are not needed after the whole interior wall ceramic tile is plated with the metallic luster layer, and only water is needed for removing the metallic luster layer and the isolation layer at the portion where the metallic luster layer does not need to be reserved. According to the method, the metallic luster layer can be arranged on both a sunken area and a plane, the polishing cost can be saved, and the manufacturing steps are simplified.

The invention discloses an antirust attapulgite drier which is characterized by comprising an antirust agent and an attapulgite drier, wherein the weight percentage of the antirust agent is 5-30%; theattapulgite drier is composed of silicon dioxide, calcium oxide, magnesium oxide, aluminum oxide and iron oxide; the formula of the attapulgite drier comprises the following components by mass percent: 50-70% of silicon dioxide, 5-25% of calcium oxide, 3-15% of magnesium oxide, 5-11% of aluminum oxide and 0.2-0.5% of iron oxide; and the formula of the antirust agent comprises the following components by mass percent: 13-55% of magnesium oxide, 9-24% of attapulgite, 12-35% of iron powder and 0.3-12% of carbon powder. The antirust attapulgite drier is prepared in the manner of mixing and refining the antirust agent and the attapulgite drier, has gasifying antirust property and moisture absorption of the drier and can overcome the defect of only a drying function of the ordinary drier.

The invention relates to an anti-explosion special type power supply device and belongs to the technical field of storage batteries. The device is characterized in that a bonding conductor sheath is sleeved on a bonding conductor, a box cover is in a double-layer structure and composed of an upper layer cover plate and a lower layer cover plate, the top periphery of a power supply box body and the peripheries of the upper layer cover plate and the lower layer cover plate are in an inclined plane structure, a plurality of ventilating slots are respectively arranged on the upper layer cover plate and the lower layer cover plate, and the ventilating slots of the upper layer cover plate and the ventilating slots of the lower layer cover plate are distributed in a staggered mode. According to the anti-explosion special type power supply device, a lead-acid storage battery with an explosion suppression performance is utilized so that the explosion suppression performance is improved, the bonding conductor sheath capable of preventing dusts is utilized so that a hidden danger of the explosion caused by the fact that combustible dusts are ignited due to overhigh local temperature or electric sparks of the bonding conductor is eliminated, a dustproof type power supply box body and a box cover structure are utilized, so that a hidden danger that gathered dusts can be ignited is eliminated, besides, the safety performance of a dust anti-explosion vehicle in a running process is improved, and the safety of persons and properties of operators on site can be guaranteed.

The invention relates to a soft seal gate valve, which comprises a valve body, a gate disc vertically moving along gate disc slideways at the two sides in the valve body and a valve rod which operates the gate disc to vertically move to start and stop; the two sides of the gate disc are provided with gate disc sliding grooves sliding on the gate disc slideways; the contact parts between the gate disc sliding grooves and the gate disc slideways are provided with pressure protection grooves used for relieving liquid pressure; the gate disc is formed by coating a layer of rubber material on the outer surface of a casting substrate; the inner wall and the outer surface of the valve body are sprayed with a non-toxic odourless resin (RAL7040) powder coating layer; and three plane seals are adopted between the lower part of the gate disc and a runner of the valve body for contact. In the soft seal gate valve, a layer of rubber is used for coating the gate disc and the inner wall of the valve body is sprayed with the non-toxic resin powder coating layer to thoroughly prevent the contact of liquid and metal and secondary pollution. The valve has the characteristics of high temperature resistance, high pressure resistance, corrosion resistance and high tensile strength, is safer in application and flexibility in starting. Moreover, water flow can be completely cut off by the three seals to ensure the service life of the valve.

The techanical characteristic of the inventions is that: by using an organic combination of a set of homopolar repulsion main and secondary magnetic steels and springs, the repulsion of the main and secondary magnetic steels can finish closing the valve and the spring tension can finish opening the valve. Because of forming a isolation belt in the magnetic field space between the main and secondary magnetic steels, the motor can be mounted in the totally-enclosed motor case to achieve the goal of separating the motor from gas completely and reliably.

The invention discloses a vegetable straw stacking fermentation device for vegetable planting. The vegetable straw stacking fermentation device comprises a stacking shell, a door plate mechanism, a pressing plate mechanism and a stacking roller mechanism. The door plate mechanism is mounted at the right upper end of the stacking shell; the pressing plate mechanism is mounted on the upper side in the stacking shell; the stacking roller mechanism is mounted at the lower end in the stacking shell; during vegetable straw stacking, dynamic accumulation is carried out by utilizing an outer guide roller and an inner guide roller; vegetable straw is cut off and cut up by utilizing a cutting wheel; then a supporting spring and a vertical pressing plate in the pressing plate mechanism are used for carrying out compaction operation; finally, fermentation liquid is added into the vegetable straw; according to the present invention, the fermentation liquid and the vegetable straw are stirred underthe effects of the outer guide roller and the inner guide roller, so that the fermentation liquid and the vegetable straw are uniformly mixed, and finally the heating fermentation is performed to prepare an organic fertilizer, the contact chance of the stacked and stored vegetable straw and external bacteria or pests is effectively isolated, the stacking fermentation is complete, and the preparedorganic fertilizer has high quality.