107results about How to "Improve anti-adhesion performance" patented technology

The present invention relates to improved methods for making and using bioadhesive, bioresorbable, anti-adhesion compositions made of inter-macromolecular complexes of carboxyl-containing polysaccharides, polyethers, polyacids, polyalkylene oxides, multivalent cations and/or polycations. The polymers are associated with each other and are then either dried into membranes or sponges or are used as fluids or microspheres. Bioresorbable, bioadhesive, antiadhesion compositions are useful in surgery to prevent the formation and reformation of post-surgical adhesions. The compositions are designed to breakdown in vivo, and thus be removed from the body. Membranes are inserted during surgery either dry or optionally after conditioning in aqueous solutions. The antiadhesion, bioadhesive, bioresorptive, antithrombogenic and physical properties of such membranes and gels can be varied as needed by carefully adjusting the pH and/or cation content of the polymer casting solutions, polyacid composition, the polyalkylene oxide composition, or by conditioning the membranes prior to surgical use. Multi-layered membranes can be made and used to provide further control over the physical and biological properties of antiadhesion membranes. Membranes and gels can be used concurrently. Antiadhesion compositions may also be used to lubricate tissues and/or medical instruments, and/or deliver drugs to the surgical site and release them locally.

The invention relates to an anti-sticking and wear resistant polyurea coating and its preparation method. The coating is prepared by blending of component A and component B. Specifically, the component A is synthesized by the following raw materials by weight: 90-120 parts of isocyanate, 40-60 parts of polyether polyol and 20-30 parts of fluorocarbon diol; and the component B is prepared by the following raw materials by weight: 500-800 parts of polyether amine, 400-600 parts of organosilicon diamine, 300-400 parts of high activity polyether polyol, 400-500 parts of an amino chain extender, 80-100 parts of an amino cross-linking agent, 100-150 parts of a high boiling point diluent, 5-10 parts of a composite catalyst, 400-600 parts of composite nano-metal oxide surface active materials, 600-800 parts of a filling material, and 40-60 parts of a pigment. The invention also includes a preparation method of the anti-sticking and wear resistant polyurea coating. A coating layer obtained by spraying of the anti-sticking and wear resistant polyurea coating in the invention has strong adhesion, and has good adhesion resistance, wear resistance, corrosion resistance, as well as impact resistance. Therefore, the anti-sticking and wear resistant polyurea coating of the invention is especially suitable for spraying on the lining surface of a heavy transport dump truck.

The invention discloses a double-layer composite tube and a manufacturing method thereof. The double-layer composite tube and the manufacturing method aim to solve the technical problems that black pigment is added into traditional HDPE tubes, accordingly inner walls are not smooth, water scale is prone to being generated, bacteria grow, and secondary pollution of water is caused. The double-layer composite tube comprises an inner layer and an outer layer, the inner layer is made of ultrahigh molecular weight polyethylene and ethylene-vinyl alcohol copolymers or low-density polyethylene, and the outer layer is made of high-density polyethylene, ethylene-vinyl alcohol copolymers and special melanin particles C of PE. The method includes the following steps of material proportioning and dehumidifying, material plastifying, material forming, vacuum sizing and spraying and cooling. The double-layer composite tube has the advantages of being good in toughness and flexibility, high in chemical stability, good in corrosion resistance, good in sealing performance, large in distribution power, long in service life, high in low temperature resistance, hygienic, free of toxin and the like. The manufacturing method is simple, easy to operate and capable of achieving integral production of the double-layer composite tube.

The present invention provides a thermosensitive recording medium including a white plastic support, a thermosensitive recording layer containing a binder resin as a binding agent, a colorless or pale color leuco dye and a color developer for heat-developing the leuco dye, a protective layer, and a back layer containing an electron-conductive needle filler and an ion-conductive polymer, wherein the thermosensitive recording layer is disposed on the white plastic support, the protective layer is disposed on the thermosensitive recording layer, and the back layer is disposed on a side of the white plastic support opposite to the side where the thermosensitive recording layer is disposed.

The invention discloses a metal ceramic die-casting die with tensile prestress and a preparation method of the metal ceramic die-casting die and belongs to the technical field of coating preparation.The metal ceramic die-casting die comprises a die base and a metal ceramic layer which is arranged on the surface of the die base and has tensile prestress. By means of thermal adaptation between thedie base and the prepared metal ceramic layer, the metal ceramic layer has the tensile prestress after being prepared, and the metal ceramic layer and the die base are metallurgically or mechanicallybonded. Preparation of the metal ceramic layer with the tensile prestress comprises the following steps: a, removing an oxidation film from the die base, and performing oil-removal cleaning; b, preparing the metal ceramic coating with the tensile prestress by selecting one of a spray method, a vapor deposition method, a composite coating method, a self-propagating high-temperature synthesis methodand a high-temperature fusion method. With adoption of the coating prepared with the preparation technology, the technical problem that thermal fatigue resistance, wear resistance and heat distortionresistance of the die are not ideal is solved effectively, the service life of the die is prolonged, quality of workpieces is improved, and yield of the workpieces is increased.

The invention discloses compound alpha-keto acid tablets and a preparation method and a detection method thereof. The preparation method comprises the following steps of: taking calcium 3-methyl-2-oxovalerate, ketoleucine calcium, alpha-ketophenylalanine calcium, keto-valine-calcium, D,L-alpha-hydroxymethionine calcium, lysine acetate, threonine, tryptophan, histidine and tyrosine, crushing the main medicaments respectively and sieving with a sieve of 100 meshes; sieving starch, talc powder and magnesium stearate and sieving with a sieve of 80 meshes respectively; mixing the main medicaments and the starch uniformly, preparing a soft material from 6 percent polyvinyl pyrrolidone (PVP) k30 isopropanol solution, granulating with a sieve of 20 meshes, and drying at the temperature of 40 DEG C; reshaping, adding magnesium stearate, the talc powder and crosslink povidone, and mixing uniformly; detecting an intermediate, and tabletting; and coating, and thus obtaining the compound alpha-keto acid tablets. The tablets with excellent granule pressing property, flowability, hardness and dissolution degree can be prepared by using the method, and the detection method can further ensure the quality of the prepared compound alpha-keto acid tablets.

The invention discloses camel blood polypeptide effervescent tablets and a preparation method thereof. Camel blood polypeptides serve as a raw material, citric acid or/and malic acid, sodium bicarbonate, polyvinylpyrrolidone, lactose or/and mannitol, stevioside or aspartame and polyethylene glycol 8000 serve as auxiliary materials, and after mixing, blending, sterilizing and tabletting are performed, the camel blood polypeptide effervescent tablets are obtained. The camel blood polypeptide effervescent tablets have the immunity enhancing function, the anti-oxidation function, the anti-fatigue function and other functions and have the advantages of being sour and sweet in taste, capable of being easily absorbed by the human body, convenient to preserve and carry, high in bioavailability and the like.

Disclosed is a bionic pulverized coal spiral conveying structure. A spiral shaft and a spiral blade are provided with a plurality of round protrusions the same in size. The multiple round protrusions the same in size are arranged along the rotation curves of the spiral shaft and the spiral blade at equal intervals. The interval between the adjacent round protrusions is 40 mm. The screw pitch of the spiral blade is 200 mm. The bionic pulverized coal spiral conveying structure effectively reduces the adhesion between materials and the spiral shaft as well as between the materials and the spiral blade of the spiral shaft, and the conveying efficiency of the materials is improved.

The invention relates to an aid for pulling elastic stockings on and off. The aid comprises a flexible, tube-like peripheral body of a smooth material with an insertion end for a foot. The peripheral body is provided with a lining of a smooth material which is attached to the peripheral body at the position of the insertion end and can otherwise be moved freely relative to the peripheral body from an inward folded position, in which the lining is situated in the peripheral body, to an outward folded position in which the lining is situated outside the peripheral body. The peripheral body further comprises tensioning means with which the aid can be secured at least temporarily round a leg. This makes the aid suitable for both pulling on and pulling off elastic stockings.

Provided is a hard coating film which is hardly adhered to a soft metal and is suitable for the coating of, for example, the surface of a hot pressing mold that may be in contact with the soft metal. The hard coating film is characterized in that, on the surface of the hard coating film, the arithmetic average roughness (Ra) is 0.05 μm or less and the average number of pin holes each having an equivalent circle diameter of 1 μm or more is 5 or less per field when at least five fields each having a size of 45×65 μm are observed on a scanning electron microscope at 2000-fold magnification.

The invention discloses an effervescent tablet of perilla frutescens. , vitamin C and collagen peptide; the perilla effervescent tablet of the present invention is a new type of solid food with sweet and sour taste, unique flavor, certain nutritional value and health-promoting effect, convenient to eat and easy to carry; the present invention has important technical Reference value and broad market development prospects.

The invention discloses a roll shaft and a production method thereof. The roll shaft comprises a roll shaft body, the surface of the roll shaft body is provided with a nonstick layer, and a conductive material is embedded in the nonstick layer. The nonstick layer arranged on the roll shaft body enhances the wear resistance of the roll shaft, prolongs the service life of the roll shaft and improves the sticking resistance of the roll shaft; and the conductive material embedded in the nonstick layer makes the roll shaft have an excellent electrostatic conduction performance.

The invention relates to a method for manufacturing a super-hydrophobic silicon substrate. The method comprises the following steps of: photoetching and etching the silicon substrate through a traditional microelectronic process, thus processing a silicon column array in a micro scale; etching the silicon substrate by an oxygen plasma etching method; diluting and proportioning a nano-particle solution by deionized water, thus obtaining nano-particle suspension; soaking a silicon substrate structure subjected to hydrophilization treatment in the nano-particle suspension, and naturally evaporating the nano-particle suspension at room temperature in an evaporation table, or adding nitrogen to the nano-particle suspension for accelerating evaporation; etching nano-particles which are densely arranged on the surface of the structure by the oxygen plasma etching method within controlled reaction time, thus obtaining nano-particles of proper sizes; and settling intrinsically weak hydrophobic poly-p-xylylene by a chemical vapor deposition method, so that the poly-p-xylylene completely settles on the surface of the silicon substrate, and the final super-hydrophobic substrate is obtained. The micro-nano double-layer hierarchical composite structure is prepared by the micro-nano processing technique, the method is simple in process and high in periodicity, and the raw materials are easily available.

The present invention provides a planographic printing plate precursor having a support, a photosensitive layer and a protective layer. The photosensitive layer contains at least an infrared absorbing agent, a polymerization initiating agent, a polymerizable compound and a binder polymer having repeating units represented by the following Formula (i). Further, the protective layer contains at least an inorganic lamellar compound.

In Formula (i), R¹ represents a hydrogen atom or a methyl group; R² represents a connecting group having two or more types of atom selected from the group consisting of a carbon atom, a hydrogen atom, an oxygen atom, a nitrogen atom, and a sulfur atom and having 2 to 82 atoms in total; A represents an oxygen atom or —NR³—, and R³ represents a hydrogen atom or a monovalent hydrocarbon group having 1 to 10 carbon atoms; and n is an integer of 1 to 5.

The invention discloses a manufacturing method of optimizing the surface of a round needle weaving machine syringe. The manufacturing method comprises the following steps: providing a syringe work piece finished with cutting and shaping as well as processing operations; operating degreasing technique on the syringe work piece; operating electrolytic polishing technique and immersing the syringe work piece into the electrolytic polishing groove fed with electrolytic liquids so as to make the syringe electrically connected with the anode of a power supply; in addition, arranging a correspondingly shaped cathode nearby the part to be polished of the syringe, and selecting suitable operating parameters on voltage and electric current as well as electrolytic time so as to make the surface of the syringe work piece happed anode electrolytic reaction. In this way, the invention improves the smoothness, glossiness and anti adhesiveness as well as beauty of the surface of the slot for the syringe, and further simplifies the processing technique as well as achieves the improvement of the processing efficiency.

The invention relates to an anti-adhesion hard coating for an injection mold and a preparation method thereof. A layer of composite coating containing a hard metal/a hard ceramic phase/a carbon material is deposited on the surface of an inner cavity of a mold, surface modification of low-surface energy and structural design of low-surface energy is performed on the coating, and the problems that the injection-molded hot blank is easy to adhere and the surface is wear-resistant are solved under the condition that a mold release agent is not used, the painting is omitted/the release agent is sprayed. The anti-adhesion hard coating for the injection mold and the preparation method thereof are tightly combined with a metal surface coating preparation technology and a plasma modification technology and the like, a heterogeneous composite coating structure is constructed, the outer surface of the coating is further modified, a hard composite coating for preventing the hot blank from being adhered on the surface of the injection mold is formed, the composite coating has the advantages that the surface of the injection mold has high abrasive resistance, and meanwhile good anti-adhesion performance is obtained.

The invention discloses a radio frequency foaming device. The device comprises a foaming mold and a solid radio frequency power source, the solid radio frequency power source is electrically connectedwith the foaming mold or a radiation unit through a coaxial cable, and the radio frequency is sent out through the foaming mold or the radiation unit and is reflected in a mold cavity; and the temperature of to-be-foamed parent materials is gradually increased due to the fact that the wave-absorbing materials in the to-be-foamed parent materials in the mold cavity absorb the radio frequency, whenthe temperature is higher than the decomposition temperature of a foaming agent, the foaming agent rapidly decomposes and generates gas, then the foaming materials are promoted to expand until the whole mold cavity is filled, and therefore foaming of the foaming materials is realized. The foaming device can realize rapid, efficient and uniform foaming of the foaming materials. The device has a wide application prospect in the field of foaming material foaming.

A fluid sampling device for sampling fluids in a fluid process vessel through a port in a wall of the vessel, the sampling device comprising a flexible tube with an open end in fluid communication with the fluid process vessel, means to attach the sampling device to the process vessel, wherein at least a portion of the flexible tube is adapted to extend into the process vessel, wherein the length of the flexible tube extending into the process vessel is at least 5 times the outer diameter of the flexible tube.

The invention discloses a compound extreme pressure lithium-based lubricating grease additive and a preparation method thereof. According to the technical scheme disclosed by the invention, the compound extreme pressure lithium-based lubricating grease additive comprises the following raw materials in parts by weight: 100-120 parts of BS oil or high-viscosity synthetic oil, 10-15 parts of fluorine rubber, 3-5 parts of Span-80, 5-8 parts of thiadiazole derivatives and 1-3 parts of chlorine brominated alkyl phosphate flame retardant. The invention also discloses a preparation method of the compound extreme pressure lithium-based lubricating grease additive. The preparation method has the advantages of reasonable raw material formulation and advanced process, the production cost can be reduced and the addition of a plurality of additives in steps in the production process of the compound extreme pressure lithium-based lubricating grease is avoided, the produced compound extreme pressure lithium-based lubricating grease is more excellent in high temperature resistance, water spray resistance, adhesion resistance, extreme pressure anti-wear performance, oxidation resistance and the like and thus the produced compound extreme pressure lithium-based lubricating grease is more excellent in market competiveness.