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57 results about "Patch repair" patented technology

Patch repair system for collapsible fuel and water tanks

The invention is a patch system for repairing collapsible fuel tanks, water tanks, inflatable boats, and other articles fabricated from a flexible structural fabric coated with a polymer. The coated structural fabric is made of nylon or polyester synthetic fibers or a blend thereof, which are coated with a thermoplastic elastomer. The structural coated fabric is coated with a thermoplastic elastomer that is a urethane (TPU), or a TPU alloy polymer. Likewise, the patch is a urethane adhesive having a latent cure coated on a TPU film. The patch can also have an integral reinforcing fabric for applications requiring a higher tensile patch. In the invention, the urethane adhesive of the patch is solvent activated by the application of a thin coating of a volatile, substantially low odor, fugitive solvent like acetone or MEK. While in the activated state, the adhesive has much less cyrstallinity and a lot more tack. The solvent activated adhesive has good wetting, and aggressively wets out and adheres to the surface of the TPU coating on the tank. The activated adhesive side of the patch is pressed against the surface of the tank. The solvent will also partially etch the thermoplastic urethane polymer coating on the tank fabric, and rapidly diffuses therein, ultimately evaporating to the surroundings. The cross-linkable urethane adhesive contains a blocked isocyanate and, preferably, an uretdione. The reduced cyrstallinity in the adhesive imparts greater freedom to the blocked isocyanate that can, depending on the equilibrium of the system, begin to cross-link the adhesive. The curing process can be accelerated through the application of heat, albeit will slowly progress to a cured state at ambient conditions.
Owner:COOLEY

Quick cold-patch repair method for asphalt pavement, and application thereof

The invention discloses a quick cold-patch repair material for an asphalt pavement, and application thereof. The material is prepared from the following components in parts by weight: 20-80 parts of magnesium phosphate cement, 5-20 parts of fine sand, 0-20 parts of medium sand, 0-50 parts of rubble with the grain size of 5-20 mm, 0-10 parts of emulsified asphalt, 0-10 parts of water-soluble polyurethane, 0-10 parts of rubber powder and 0-1 part of air entraining agent. The materials in parts by weight are uniformly stirred (1.5-2 min) in a stirrer and then poured in a damaged part of the cleared asphalt pavement, thereafter the damaged part is plastered, shaped and repaired, and then the asphalt pavement can be opened for traffic after 2-3 hours of maintenance. The quick cold-patch repair material disclosed by the invention adopts blending and pouring for molding in practical application, no heating is needed, the construction is convenient, the maintenance time is short, small influence is caused to traffic, and the mechanical property and the durability both satisfy the application requirement, so the quick cold-patch repair material is especially suitable for quick repair of pothole and crack-type damages of the asphalt pavement. The quick cold-patch repair material disclosed by the invention not only has a remarkable effect on damage repair aspect of the asphalt pavement but also can expand the application thereof to the field of cement concrete engineering and fields of damage repair of house buildings and old buildings, and the like.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Patch repair system for collapsible fuel and water tanks

The invention is a patch system for repairing collapsible fuel tanks, water tanks, inflatable boats, and other articles fabricated from a flexible structural fabric coated with a polymer. The coated structural fabric is made of nylon or polyester synthetic fibers or a blend thereof, which are coated with a thermoplastic elastomer. The structural coated fabric is coated with a thermoplastic elastomer that is a urethane (TPU), or a TPU alloy polymer. Likewise, the patch is a urethane adhesive having a latent cure coated on a TPU film. The patch can also have an integral reinforcing fabric for applications requiring a higher tensile patch. In the invention, the urethane adhesive of the patch is solvent activated by the application of a thin coating of a volatile, substantially low odor, fugitive solvent like acetone or MEK. While in the activated state, the adhesive has much less cyrstallinity and a lot more tack. The solvent activated adhesive has good wetting, and aggressively wets out and adheres to the surface of the TPU coating on the tank. The activated adhesive side of the patch is pressed against the surface of the tank. The solvent will also partially etch the thermoplastic urethane polymer coating on the tank fabric, and rapidly diffuses therein, ultimately evaporating to the surroundings. The cross-linkable urethane adhesive contains a blocked isocyanate and, preferably, an uretdione. The reduced cyrstallinity in the adhesive imparts greater freedom to the blocked isocyanate that can, depending on the equilibrium of the system, begin to cross-link the adhesive. The curing process can be accelerated through the application of heat, albeit will slowly progress to a cured state at ambient conditions.
Owner:COOLEY

Method for locally repairing bricked ladle working liner

The invention discloses a method for locally repairing a bricked ladle working liner. The method comprises a step of slag line brick patch repair and a step of wall-wrapping brick patch repair. In the step of slag line brick patch repair, the damaged part is dismantled in the shape of an inverted triangle and then replaced by ladle bricks of the original material and shape after dismantling. In the step of wall-wrapping brick patch repair, the patch repair is performed by local transverse dismantling method in which a severely-damaged ladle brick and two bricks on the left and the right sides and concentric to the ladle brick are dismantled using a pneumatic pick, which are replaced by bricks of the original material and shape after dismantling. The method disclosed by the invention adopts the ladle bricks of the original material and shape, does not need much investment, prevents the whole ladle from being dismantled due to local severe damage, maintains the original service life of the ladle by means of patch repair, and reduces the cost of refractory material per ton steel. For a low-life ladle with a local damage, the whole ladle does not need to be out of service in advance or dismantled by means of patch repair, which can effectively reduce the labor intensity of workers, reduce the discharge of waste refractory materials and bring good environmental benefits.
Owner:JIUQUAN IRON & STEEL GRP

Method for manufacturing reconstituted decorative lumber through high-frequency hot-pressing method

The invention provides a method for manufacturing a reconstituted decorative lumber through a high-frequency hot-pressing method. The method comprises the following steps: (1) carrying out peeling, rotary-cutting and cutting on logs to obtain veneers A; (2) carrying out bleaching, dyeing and drying treatment on the veneers A after separation to obtain veneers B; (3) carrying out scarf patch repair, combination, double-sided gluing and assembly on the veneers B to obtain slabs; (4) placing each two assembled slabs between an upper press plate and a lower press plate of a high-frequency hot-pressing machine; (5) starting up a high-frequency generator, electrifying to preheat a metal plate and then turning on the pressing machine, turning off the pressing machine when 1/2-2/3 of a hot-pressing period is achieved, and vertically replacing the positions of the two reconstituted decorative lumber slabs between the press plates and then continuing to heat until the whole hot-pressing period is achieved, wherein the hot-pressing period is 4-6h; and (6) cooling the slabs, then detaching films and distributing to relief a pressure, and then taking out the slabs and carrying out square-cutting. The preparation method provided by the invention is simple in process and high in production efficiency; and the product is high in gluing quality and uniform in adhesive curing.
Owner:DEHUA TB NEW DECORATION MATERIAL CO LTD +1

Heat and moisture resisting organosilicone-modified ultraviolet-curable resin composition, composite comprising same and composite patch repair method

The invention provides a heat and moisture resisting organosilicone-modified ultraviolet-curable resin composition, a composite comprising the same and a composite patch repair method, and belongs to the field of photocuring technology and resin matrix composites. The heat and moisture resisting organosilicone-modified ultraviolet-curable resin composition is prepared from, by weight, 80-100 parts of epoxy resin, 5-30 parts of organosilicone resin, 1-5 parts of cationic initiator, 1-5 parts of thermal initiator, 0-1 part of photosensitizer and 0-0.5 part of filler. According to the heat and moisture resisting organosilicone-modified ultraviolet-curable resin composition, cationic polymerization is initiated under ultraviolet irradiation; decomposition of the thermal initiator can be promoted by heat release in polymerization, self-propagating curing from top to bottom under ultraviolet irradiation is achieved, the curing speed is high, the curing thickness is large, tests show that curing can be completed within 15 min when 5 layers of glass fiber cloth or 3 layers of carbon fiber cloth is laid, and the heat and moisture resistance of the composite and repair components thereof can be significantly improved.
Owner:QINGDAO CAMPUS AVIATION ENG COLLEGE OF THE PEOPLES LIBERATION ARMY NAVY

Vulnerability code clone detection method based on context semantics and patch verification

The invention discloses a vulnerability code clone detection method based on context semantics and patch verification, and solves the problem that an existing vulnerability code clone detection method cannot obtain vulnerability context and patch repair. The method comprises the steps of obtaining vulnerability data; marking vulnerability code control statements; performing abstract normalization preprocessing on vulnerability source codes and patches; constructing a vulnerability function and a vulnerability vulnerability code fingerprint library; cloning and detecting a to-be-detected code; and judging a detection result and outputting the detection result to finish vulnerability clone detection of the software. Based on the code fingerprint, the problem of low accuracy of a high-level abstract technology is avoided; according to the method, the influence of renaming on the detection accuracy is eliminated for the code abstract preprocessing operation; the context relationship and the patch are verified, so that the false alarm rate is reduced; besides, fragile code, control statement and patch detection is carried out on the to-be-detected code, so that the application scene is expanded and the missing report rate is reduced. The method is used for detecting bugs caused by code cloning in software.
Owner:陕西阡陌通达科技有限公司

Hot repair method for achieving patch security, mobile terminal and hot repair system

The invention discloses a hot repair method for achieving patch security, a mobile terminal and a heat repair system. The hot repair method comprises the steps that a network request for downloading a patch file is sent to a remote end and a response to the network request is received; according to the response to the network request, whether or not the patch file is available in the remote end is judged, and if so, the patch file is downloaded, and a digital signature is encrypted and saved; otherwise, program running is continued in accordance with the original program logic; the patch file is called and signature verification is conducted, if the verification is successful, according to the key names of data variables, the corresponding code of the patch file is queried, otherwise, the network request is resent; based on the code, the Java layer is utilized to interact with Js, logic repairing is conducted on the data variables to be modified, and the to-be-inputted parameters of the original program are obtained; program running is continued according to the original program logic, and the desired results are obtained. According to the hot repair method for achieving patch security, the hot repair is achieved by utilizing the interaction between Js and the Java layer, the stability of the repair is improved, the digital signature encryption and the corresponding verification are conducted, and the security of the patch repair is enhanced.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Internal ring seal patch for inguinal hernia and application method of internal ring seal mesh

The invention belongs to the technical field of medical devices, and relates to an inguinal hernia inner ring sealing patch, which is a round elastic grid with a good preset shape memory function. The front is provided with a layer of non-adhesive film, the back is provided with a layer of adhesive film, and the middle part is connected with a A miniature cylinder, one end of the cylinder protrudes from the adhesion membrane and a blind hole is arranged on the end face, the elastic grid at the outer wall of the cylinder is connected with a fixed line that can be absorbed by the human body, and the elastic grid is elastic A collapsible nickel-titanium alloy mesh stent, the non-adhesive film is regenerated oxidized cellulose film or polytetrafluoroethylene film, the adhesive film is polypropylene omentum, and the inner ring of the inguinal hernia is inserted using an interventional tube and a release rod The sealing patch is released and fixed on the seal of the inner ring of the inguinal hernia to complete the minimally invasive closure repair, which can be performed under local anesthesia, with low operation difficulty, less pain and complications, and shorter hospital stay. It is suitable for repairing the inner ring of the inguinal hernia. Sealing and mesh repair, also suitable for mesh repair of all abdominal wall hernias.
Owner:莫经刚

Process for repairing ancient books, paintings and calligraphy and paper literatures by using paper pulp

The ancient book, calligraphy and painting pulp repairing process of the present invention relates to a kind of ancient book, calligraphy and painting, paper document repairing process method using pulp. The process is as follows: (1) Select the pulp material according to the quality of the restored ancient books, calligraphy and painting paper, put the base paper of the pulp material into the mixer, add water and suspending agent, stir and pulverize evenly; the weight ratio of base paper, suspending agent and water is: Base paper 5-20, suspending agent 5-15, water 500-1000; stirring time 30-90 seconds, take out the pulp for later use. (2) Put the ancient books, calligraphy and paintings to be repaired flat on the repair frame made by handmade paper curtains, put the prepared pulp in the repair pen for repair, and repair the damaged parts of ancient books, calligraphy and paintings, and use When the pulp is made into paper, the bonding force, the interweaving force of the fibers and the adhesion of the suspending agent are automatically repaired; (3) the above-mentioned repaired ancient books, calligraphy and paintings are removed from the repair rack, placed flat on the absorbent paper, and absorbed. Let it dry naturally, remove the binding, and the repair work is complete.
Owner:邱晓刚
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