39results about How to "With anti-adhesion" patented technology

The invention relates to temperature-controlled rolling equipment for production of metal thin ribbons and ultra-thin strips in coils.The temperature-controlled rolling equipment is arranged in the bilaterally symmetrical mode. The position where a working roll (15) is used for rolling strips is a rolling mill gap (20). Inlet and outlet side parts comprise measuring tension rolls (13, 17), steering rolls (12, 18), and recoiling machines (11, 19). All parts are sequentially arrayed with the rolling mill gap as the center from the inside to the outside. The equipment further comprises an uncoiling and heating device (21), a plate strip heat-compensating device (24) and a plate strip edge heating device (25) before ingress of the rolling mill gap, a roll surface heating device (26), and a roll core cooling and bearing seat cooling mechanism (3), a plate strip edge heating device (35) and the plate strip heat-compensating device (34) after egress of the rolling mill gap, a pre-coiling heating device (31), heating devices (22, 32) at positions of the steering rolls and heating devices (23, 33) at positions of the measuring tension rolls at the inlet side.

The invention discloses a production technology for polycrystalline silicon. The production technology includes the following steps: 1, a first coating, a second coating and a third coating are sequentially arranged on the surface of a crucible from inside to outside, and a crystalline silicone leftover material layer is laid; 2, a small quantity of raw polycrystalline silicon materials in the melted state is contained in the crucible, and the temperature of the crucible is controlled to be lower than the melting point of the crystalline silicone leftover material layer to enable the small quantity of melted raw polycrystalline silicon materials to form a crystallization protection layer; 3, in the vacuum environment, to-be-processed raw polycrystalline silicon materials are contained in the crucible, placed in a melting furnace with an electron beam generating device and processed through laser irradiation; 4, high-frequency induction heating is carried out in the vacuum environment, a slag forming constituent is added, plasma heating is carried out, steam-and-hydrogen-mixed argon is introduced, and directional solidification is carried out to obtain the polycrystalline silicon serving as the target product. By means of the production technology, the boron content, the phosphorous content and the metal impurity content can be effectively reduced, the complete polycrystalline silicon is prepared, long crystal dislocation is less, grain boundaries are proper, and the conversion rate of a polycrystalline silicon battery is increased.

The invention belongs to the field of medical dressings, and particularly relates to a bamboo alginate functional dressing and a preparation method thereof. The dressing comprises the following components in parts by weight: 1-4.2 parts of sodium alginate, 0.05-0.4 part of sodium hyaluronate, 0.25-2 parts of collagen, 4.5-31 parts of bioactive glass powder and 62-95 parts of bamboo fiber. The dressing can quickly promote healing of a wound surface, and healed wound surface is smooth and resilient and is less prone to scar proliferation; and the dressing has the functional characteristics of antisepsis, imbibition, hemostasis, adhesion prevention, no cytotoxicity and the like, and can satisfy various requirements for wound surface healing. According to the preparation method of the bamboo alginate functional dressing, the problem that the alginate medical dressing is cracked after exudate imbibition is solved, thereby facilitating dressing change by medical personnel.

The invention discloses procyanidine-modified carboxymethyl chitosan, a preparation method thereof, and application thereof in the fields of medical materials, health-care foods, cosmetics and the like. The procyanidine-modified carboxymethyl chitosan keeps the characteristics of carboxymethyl chitosan and has high oxidation resistance, antibacterial activity, barrier properties and the like, and is worthy of being applied.

The invention relates to starch compound polysaccharide hemostatic powder and a preparation method thereof. The preparation method comprises the following steps: carrying out enzymatic denaturation on starch to obtain a porous starch solution, dissolving sodium hyaluronate in deionized water to obtain a sodium hyaluronate solution, mixing the two solutions according to a weight ratio of 50-95 parts of porous starch solution to 5-50 parts of sodium hyaluronate solution, stirring uniformly and drying, soaking the dried material in a calcium chloride solution with a certain concentration to carry out ion exchange, and grinding the material into powder after secondary drying. The material provided by the invention has efficient stypticity on wound surfaces, is biodegradable, has the functions of anti-adhesion and moisture retention, and is safe and non-toxic, simple in preparation process and low in cost.

The invention provides a waterborne scratch-resistant anti-fog anti-dropping paint. The paint comprises, by weight, 1 to 15% of a nanometer titanium sol, 1 to 5% of a nanometer aluminum sol, 0.1 to 10% of waterborne polyurethane, 0.1 to 10% of waterborne acrylic acid emulsion, 0.1 to 5% of a waterborne organosilicon scratch-resistant aid, 3 to 15% of vinyl acetate-ethylene copolymer emulsion, 1 to 12% of polyvinyl alcohol, 0.1 to 2% of a wetting agent, 1 to 10% of an emulsifier and 65 to 90% of deionized water, summing to 100%. The waterborne scratch-resistant anti-fog anti-dropping paint provided by the invention has the characteristics of obvious scratch resistance and good anti-fog and anti-dropping, is free of any organic solvent and has the advantages of no toxicity and environment friendliness; and after a greenhouse with a greenhouse film coated with the paint is used for two years, scratches on a coating of the greenhouse film are obviously reduced, and the anti-fog and anti-dropping performance of the greenhouse film is not obviously changed compared with the initial anti-fog and anti-dropping performance of the greenhouse film.

The invention discloses a preparation method of an antibacterial wear-resistant composite non-stick pan coating, and the method comprises the following steps: S1, carrying out sandblasting rougheningtreatment on a metal pan body, removing oil, and cleaning for later use; S2, uniformly ball-milling nano zinc powder, nano aluminum oxide powder and a dispersing aid, then uniformly mixing with a silane coupling agent and deionized water, then sequentially adding a zinc metal organic framework and the silane coupling agent, continuously performing stirring, uniformly coating the inner surface of the metal pot body with the mixture, and performing high-temperature calcination to obtain a non-stick pot bottom layer; S3, weighing a certain amount of silane modified nano silica sol; then adding anadditive and a suspending agent, performing stirring and mixing uniformly, coating a bottom layer with the mixture, and performing UV curing and drying in sequence to obtain the composite ceramic non-stick pan coating. The prepared non-stick pan ceramic coating solves the problems that an existing non-stick pan coating is poor in antibacterial property, prone to cracking, poor in abrasion resistance, short in service life and the like, and the long-term safe and healthy use requirement of the non-stick pan coating is met.

The invention discloses a prescription of light modified kynar, which comprises modified kynar, a brightener, an active agent, a foaming agent and a plasticizer. The brightener is modified amide wax, the active agent is hydrogen oxidation tetra-ethylamine, the foaming agent is azodicarbonamide, and the plasticizer is diisobutyl phthalate. The prepared light modified kynar has the advantages of adhesion resistance, smoothness, abrasion resistance and high plasticity.

The invention discloses an efficient photothermal conversion polycrystalline silicon plate and a preparation method thereof. A first coating, a second coating and a third coating are sequentially arranged on the surface of a crucible from inside to outside, then an isolated layer of certain thickness is laid at the bottom of the crucible, and polycrystalline silicon raw materials are contained in the crucible; the crucible containing the polycrystalline silicon raw materials is placed in a melting furnace with an electron beam generating device to be treated, then a silicon solution is obtained, cooling, crushing, acid pickling and drying are carried out, and then a crystal growing stage is carried out; after the crystal growing stage is carried out, the temperature of a temperature control thermocouple and the rate of upward movement of a side heat insulation cage are regulated, meanwhile, water vapor and hydrogen doped argon is introduced, and directional solidification is carried out; after molten silicon is completely crystallized, annealing and cooling are carried out, and the efficient photothermal conversion polycrystalline silicon plate is formed. The process is easy to operate, scientific, reasonable and high in production efficiency, the content of boron, phosphorus and metal impurities in the polycrystalline silicon plate can be effectively reduced, complete polycrystalline silicon is prepared, little crystal growing dislocation is generated, the grain boundary is proper, and the photothermal conversion efficiency is improved.

The invention discloses a formula of lubricating modified polyvinylidene fluoride. The lubricating modified polyvinylidene fluoride comprises modified polyvinylidene fluoride, a lubricating agent, a stabilizing agent, a plasticizing agent and a wear resisting agent, wherein the lubricating agent is polytetrafluoroethylene, the stabilizing agent is dibasic phosphite ester, the plasticizing agent is polyadipic acid propylidene ester, and the wear resisting agent is modified silicon-aluminum carbon black. According to the invention, the prepared lubricating modified polyvinylidene fluoride is anti-blocking, smooth, wear-resistant and high-plasticity.

The invention discloses special protective glue for lubricating an anti-sticking lip and application of the special protective glue to tipping paper, and aims to solve the problem that the tipping paper is stuck to the lip to cause lip sticking in the smoking process at present and bad smoking experience is brought to consumers. The special protective glue is prepared from the following raw materials in percentage by weight: 25 to 30 percent of polyvinyl butyral, 5 to 10 percent of fumed silica, 55 to 60 percent of edible ethanol, 6 to 9 percent of castor oil, 0.5 to 1.5 percent of micro wax powder and 0.05 to 0.5 percent of erucyl amide. The special protective glue has the advantages that the friction resistance and the hand feeling of the surface of the tipping paper product are obviously improved; the special protective glue has a very good smooth effect on the surface and is smooth, anti-adhesion, self-cleaning, hydrophobic, stain-resistant and scratch-resistant and does not influence the fastness and the adhesive force of a printing ink coating so that the lip of the smoker is protected, a certain lip protecting and moistening effect can be achieved and the lip and the fingersof the smoker are protected against injuries.

The invention discloses a method for solving the problem of asphaltene coking in residual oil and relates to the technical field of equipment decoking. A coating is sprayed to a device and a pipelinewhich are easy to coke. The coating is a high-temperature-resistant anti-sticking nano composite ceramic coating and has the characteristics of being resistant to high temperature, capable of preventing asphaltene sticking, resistant to wear and resistant to corrode, so that the sticking of asphaltene in the residual oil to the equipment and the pipeline is avoided. Compared with other anti-cokingmethods, for example, device equipment is filled with a chemical agent and a scale inhibitor, or the coked equipment is cleaned, by the adoption of the method, the effect of preventing coking of thedevice is more remarkable, the operation is convenient, safety and environment protection are achieved, and the labor amount is saved, so that the device can operate for a long period, and great economic benefits are brought to enterprises.

The invention provides oil gauze and a preparation method thereof, solves the problems that common gauze is adhered to a wound and does not have the effects of sterilizing, resisting infection and promoting wound healing, and is prepared from, by volume, 25% of white beeswax, 55% of peanut oil, 1% of honey and 19% of decoction containing 6% of cortex phellodendri, 5% of coptis chinensis, 4% of rheum officinale and 4% of radix scutellariae.

The invention provides an internal fracture fixation device. The internal fracture fixation device comprises a fixing plate; a titanium alloy steel plate is adopted as the fixing plate; and a peek coating is sprayed on the surface of the titanium alloy steel plate. The internal fracture fixation device mainly enhances advantages and avoids disadvantages of the characteristics of titanium metal and peek materials, has the effects of good strength, corrosion resistance and adhesion prevention, can completely eradicate pain caused by adhesion, enables extraction to be smoother in a secondary operation, and reduces tissue damage.

Disclosed is a spine implant unit, comprising an elastic segment, wherein the elastic segment contains a silicone rubber loaded with a drug. Also disclosed is a method for preparing a spine implant unit, comprising the following operation steps: providing a spine implant unit, wherein the spine implant unit comprises an elastic segment; washing and drying the spine implant unit; and injecting liquid silicone rubber containing a drug and a curing agent into the elastic segment, curing at room temperature and forming a silicone rubber loaded with the drug. The spine implant unit has the following functions: relieving pain persistent ailment caused by adhesion and oppression of a focal point, clearing cartilage calcification to break down and absorb same and clearing edema and hypertrophy of yellow ligament and posterior longitudinal ligament.

The invention discloses a double-layer anti-adhesion polypropylene patch and a preparation method and application thereof, the double-layer anti-adhesion polypropylene patch comprises a polypropylenemonofilament layer and a polypropylene/polydopamine composite monofilament layer, wherein the polypropylene monofilament layer is knitted by a double-comb warp knitting process, and the polypropylene/polydopamine composite monofilament layer is knitted by a three-comb warp knitting process. The double-layer anti-adhesion polypropylene patch provided by the invention has the advantages of unilateral anti-adhesion, good biocompatibility and infection resistance, can be placed in the peritoneal cavity, can be used as a medical material for repairing abdominal external hernia, and remarkably reduces the incidence of complications such as intestinal adhesion, intestinal obstruction, intestinal fistula and infection.