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124results about How to "No defect" patented technology

Degradable organic amines and organic aromatic ammonium salts latent epoxy resin curing agent and application

The invention provides a degradable organic amines and organic aromatic ammonium salts latent epoxy resin curing agent. The curing agent can be polymerized with epoxy resin to generate a degradable cross-linked polymer, and the degradable cross-linked polymer can be degraded in a mixed system of acid and solvent under the condition of heating and stirring. The invention also provides a prepreg which is composed of the curing agent, the epoxy resin, an auxiliary material and a reinforcing material. The invention also provides a reinforced composite material which is prepared by the curing agent, the epoxy resin, the auxiliary material and the reinforcing material. The reinforced composite material can be prepared by virtue of a prepreg forming method. The reinforced composite material can be degraded in the mixed system of the acid and the solvent under the condition of heating and stirring and recycled after neutralization. The reinforced composite material has excellent mechanical property and is suitable for different composite material application field. The degraded recycling method of the reinforced composite material is simple, economical, temperate in condition and easy to control.
Owner:ADESSO ADVANCED MATERIALS WUXI CO LTD

Three-dimensional visual information acquisition method based on two-dimensional and three-dimensional video camera fusion

The invention discloses a three-dimensional visual information acquisition method based on two-dimensional and three-dimensional video camera fusion. According to the method, a two-dimensional video camera and a three-dimensional video camera form a composite video camera to respectively image a scene synchronously; by establishing a matched mapping model of three-dimensional video camera depth images and two-dimensional video camera images, matched mapping points and mapping areas of the pixels of the three-dimensional camera video depth images in the two-dimensional video camera images are obtained; the mapping areas in the two-dimensional video camera images are processed through triangular decomposition, and a depth curved surface interpolation function of a triangulation area is established on the basis of depth information of adjacent mapping points; depth information of image pixels in the triangulation area is calculated through interpolation, and then depth images corresponding to high-resolution two-dimensional video camera images can be acquired. According to the method, the two-dimensional video camera image information and the three-dimensional video camera depth information are kept to the maximum degree, and the method has the advantages of being high in precision, little in information loss and the like and can be widely applied to the fields of industrial visual measurement, visual assembly, robot visual navigation and the like.
Owner:HUNAN UNIV

Degradable cyclic acetal and cyclic ketal diamine epoxy resin curing agent and application thereof

The invention provides a degradable cyclic acetal and cyclic ketal diamine epoxy resin curing agent. The curing agent can be polymerized with an epoxy resin so as to generate a degradable cross-linking polymer, wherein the degradable cross-linking polymer can be degraded in a mixing system of acid and solvents under the heating and stirring condition. The invention further provides an enhanced composite material which is prepared from the curing agent, the epoxy resin, auxiliary materials and enhancing materials; and the enhanced composite material can be degraded in the mixing system of acid and solvents under the heating and stirring condition, and can be recycled and reused after being neutralized. The enhanced composite material has excellent mechanical properties, is applicable to application fields of different composite materials, and the degrading and recycling method is simple, economic, mild in condition and easy to control.
Owner:ADESSO ADVANCED MATERIALS WUHU CO LTD

High-entropy alloy double technology preparation method

ActiveCN111349800AAvoid burnsMany adjustment parametersHigh entropy alloysAlloy composition
The invention relates to the technical field of high-entropy alloy, in particular to a high-entropy alloy double technology preparation method. The high-entropy alloy double technology preparation method comprises the steps that firstly, types of four welding wires and components, contents, existence forms and existence positions of welding wire elements are decomposed and designed according to the element components, contents and physico-chemical properties of high-entropy alloy needing to be prepared, and the welding wires are prepared; secondly, an integrated four-wire pulse gas shielded welding technology is adopted to cooperate with additional materials to manufacture the high-entropy alloy; and finally, a vacuum self-consumption remelting technology is adopted to refine the high-entropy alloy. According to the high-entropy alloy double technology preparation method provided by the invention, the technology is stable, the preparation efficiency is high, the cost is low, the heat input adjusting range is wide, the optional alloy element range is wide, the quantity of types of prepared high-entropy alloy is large, alloy component adjusting is convenient and accurately controllable, chemical components are uniform, the structure is compact and uniform, the degree of purity is high, and the inner quality is good.
Owner:SHIJIAZHUANG TIEDAO UNIV

Preserving fluid and preserving method for maintaining high cell activity of tissue sample

The invention provides a preserving fluid and a preserving method for maintaining high cell activity of a tissue sample, wherein the preserving fluid comprises the components: ion buffer solution components, carbohydrate components,, components avoiding the generation of ice crystals in and out solutions of tissue cells at a low temperature of 0-6 DEG C, components providing supplement, antioxidant and anti-apoptosis components for anabolism of the tissue cells; the preserving fluid has good biocompatibility, does not contain toxic or harmful components, and also does not contain components such as animal-derived protein, antibiotics and hormones influencing tissue gene expression. Different from traditional ultralow-temperature cryopreservation (-80 DEG C), the cryopreservation method disclosed by the invention can effectively realize low-temperature storage (0-6 DEG C) of fresh tissue samples of human beings and animals, maintains high cell activity of tissues, maintains tissue morphology, and is used for preservation and transportation of the tissue samples. Meanwhile, the nucleic acid integrity of the tissue and the stability of gene expression can be effectively maintained, the original state of the tissue is maintained, and the method can be used for gene detection, scientific research and other related experiments.
Owner:上海伯豪生物技术有限公司

Process and a plant for the production of metal strip

A process and an ultracompact plant for the endless production of hot rolled steel strip comprising an ingot mould (15) that produces a very thin slab, having narrow sides with thickness in the range between 40 and 55 mm and a central swelling, at a speed in the range between 4 and 16 m / min. Such a slab, which displays a core in which the steel is still liquid, is passed through a vertical pre-rolling device (16) that reduces the thickness of the slab and flattens it. The solidified slab may thus be subjected to a first mild rolling by a conveyor (17) and, by forming a free curve, takes a horizontal position where it is subjected to a first surface descaling, a first rolling, a heating in an inductor (23), a second surface descaling and a series of reductions in a rolling mill (30) formed by at least two stands, by maintaining its temperature along the mill above the recrystallisation point Ar3. Downstream of the rolling mill (30) there are provided a roller runway with cooling showers, a flying shear (33) for cutting to length the strip produced, pinch rolls and at least two spinning wheels (34) for the formation of coils of the hot rolled strip.
Owner:DANIELI & C OFF MEC SPA

Method for degradation of composite material by directional bond breaking and recovery of fiber from composite material

ActiveCN110527137ASimple componentsEasy to separate, purify and reusePlastic recyclingSolvent effectsFiber strength
The invention provides a method for degradation of a composite material by directional bond breaking and recovery of fibers from the composite material. The method comprises the following steps that (1) the composite material is cut into composite material blocks with the target size for standby application; (2) the composite material blocks, solvents, metal salts, ligands, pH regulators and oxidants are mixed evenly, and then heated, the composite material blocks are naturally cooled to the room temperature after being completely degraded, and then high-speed centrifugal separation is conducted to obtain crude fiber products; and (3) the crude fiber products are washed and dried, and finally fiber fine products are obtained. According to the method, through the hot solvent effect, unsaturated complexation and weak complexation, the solvents, the metal salts, the ligands, the pH regulators, the oxidants and the composite material are mixed, and then heated, directional bond breaking degradation of resin is achieved, finally the fibers with little surface resin residue, basically no defect and the fiber strength retention rate up to 97.1% are obtained, and the degradation rate of the resin is as high as 100%.
Owner:WUHAN UNIV OF TECH
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