9results about How to "High structural similarity" patented technology

The invention relates to the technical field of elastomer materials, and discloses a preparation method of a high-temperature-resistant TPE thermoplastic elastomer material.The preparation method comprises the steps that a hydrogenated styrene-butadiene-styrene block copolymer SEBS, polypropylene, alkane naphthalene polystyrene grafted graphene and an antioxidant are blended and then subjected to melt extrusion and granulation in a double-screw extruder, and the high-temperature-resistant TPE thermoplastic elastomer material is obtained. The high-temperature-resistant TPE material is obtained; a polystyrene molecular chain containing an alkyl long chain and a naphthalene ring structure is introduced to the surface of graphene, so that graphene can be better dispersed in an elastomer material composed of SEBS and polypropylene, the tensile strength, the elongation at break, the hardness and the thermal weight loss temperature of the material are remarkably improved, and excellent mechanical properties and high temperature resistance are shown.

A rubber composite material based on high-butadiene-content iron-based butadiene-pentadiene rubber, and its preparation method and application. The present invention belongs to the field of rubber materials and their preparation. The purpose of the present invention is to solve the technical problem that the existing modified composite rubber cannot balance the "devil's triangle" performance of rubber. The material of the present invention is prepared from olefin rubber, reinforcing filler, plasticizer, zinc oxide, stearic acid, sulfur, silane coupling agent, accelerator and antioxidant, and the olefin rubber is mixed with natural rubber, solution-polymerized styrene-butadiene rubber, butadiene rubber and iron-based butadiene-pentadiene rubber. The molecular weight of the iron-based butadiene-pentadiene rubber is 50-80w, the molecular weight distribution is 1.5-2.5, the sum of the vinyl and propylene side group contents is 30-50%, and the molar ratio of monomer butadiene to isoprene during the preparation process is (1.5-9): 1. The material of the present invention is used as a tire tread rubber. The present invention effectively balances the "devil's triangle" performance of the rubber material.

The present invention relates to the technical field of infrared image super-resolution reconstruction, and specifically relates to a multi-scale infrared image super-resolution reconstruction method, system and storage medium; the multi-scale infrared image super-resolution reconstruction method, system and storage medium comprise the following steps: photographing a natural scene with an infrared camera to obtain an infrared image FLS data set, and dividing the data set into a training set and a test set; a super-resolution reconstruction network is composed of three parts: a shallow feature extraction block, a deep feature extraction block and a reconstruction block; the network is first pre-trained with an ImageNet data set, then trained with an infrared image data set FLS, and finally a composite loss function is used to constrain the network training so that a high-resolution infrared image with clear texture and edge is reconstructed; the present invention enables infrared image super-resolution reconstruction to have a smaller amount of calculation, a smaller amount of parameters and a faster reconstruction speed while maintaining the super-resolution accuracy, which is more in line with practical applications.

The invention belongs to the technical field of polyester fibers and discloses a method for preparing a high-strength polyester fiber containing a liquid crystal polymer. 1,3-bis(3-(biphenyl propyl)-1,1,3,3-tetramethyldisiloxane, a diol compound and a diisocyanate compound are reacted to obtain a polyester-polyurethane-based liquid crystal polymer. The polyester-polyurethane-based liquid crystal polymer is then melt-blended with polyethylene terephthalate, extruded, granulated and melt-spun to obtain a high-strength polyester fiber containing the liquid crystal polymer. The polyester-polyurethane-based liquid crystal polymer contains a benzoate structure, has good structural similarity with polyethylene terephthalate, improves the compatibility and dispersibility of the polyester-polyurethane-based liquid crystal polymer in the polyester fiber, and contains a flexible and heat-resistant organic siloxane structure and a thermally stable biphenyl group, which can significantly improve the tensile properties and heat resistance of the fiber.

A tire tread rubber composite material based on high extraction resistance liquid rubber and a preparation method thereof. The present invention belongs to the field of rubber materials and their preparation. The purpose of the present invention is to solve the technical problems of poor extraction resistance and decreased mechanical properties of traditional plasticizers. The material of the present invention is prepared from olefin rubber, iron-based butyl-pentane liquid rubber, zinc oxide, plasticizer, sulfur, accelerator and antioxidant, and the olefin rubber is mixed with natural rubber, butadiene rubber, styrene-butadiene rubber and iron-based butyl-pentane rubber, and the molecular weight of the iron-based butyl-pentane liquid rubber is 0.5-5w, and the total content of vinyl side groups and propenyl side groups is 30-60%. The present invention introduces iron-based butyl-pentane liquid rubber into the rubber formula, while ensuring the processing performance of the rubber composite material, the extraction resistance rate is increased by 70%, and the mechanical properties of the rubber material are improved, the tensile properties are increased by about 10.34%, and the tear resistance is increased by about 11.54%.

The present invention relates to the technical field of polyester films, and in particular to a flame-retardant polyester film and a preparation method thereof. The PET polyester film used for the protective film of electronic products does not have flame retardancy. In view of the above problems, the present invention provides a flame-retardant polyester film, including a polyester substrate and an anti-reflective flame-retardant coating on the surface of the polyester substrate. The present invention not only adds poly [hydroxyethyl methacrylate-co-cyclotriphosphazene-co-(3,4-dihydroxybenzoic acid)] oligomers to the anti-reflective flame-retardant coating raw material formula, but also adds vinyl-POSS, both of which have a good synergistic flame retardant effect, and the addition of vinyl-POSS significantly improves the polar oxygen index of the flame-retardant polyester film.

The invention relates to the technical field of biological medicine, in particular to a mosapride citrate impurity compound and a preparation method thereof. The mosapride citrate impurity compound has a structure as shown in a formula IV. The mosapride citrate impurity compound provided by the invention is a mosapride citrate process impurity, has high structural similarity with a mosapride citrate compound, and is difficult to separate and remove by a process. The impurity compound can be used as an impurity reference substance in a mosapride citrate finished product detection standard, and is used for a quality control link of qualitative and quantitative analysis of impurities in a mosapride citrate production process. The synthesis method is short in route, stable in process, high in product purity and simple to operate, can provide a qualified impurity reference substance for quality control of mosapride, and has important application value. # imgabs0 #

This invention discloses a distributed synthetic aperture radar (SAR) cooperative anti-jamming method and system. The method includes: acquiring distributed SAR echo signals with interference; estimating the relative time delay of interference signals in the data received by different stations of the distributed SAR system, and constructing a low-rank enhancement matrix in the frequency domain; arranging the echo data matrix and the low-rank enhancement matrix in the frequency domain of each receiving station into a new matrix to be processed according to pulses, and constructing a distributed cooperative interference suppression convex optimization problem model for the newly constructed data matrix; solving the distributed cooperative interference suppression convex optimization problem to obtain the distributed SAR echo signal data after interference suppression, and rearranging it according to the radar to which it belongs into an initial structure for subsequent imaging. Compared with traditional interference suppression methods, the SAR image results recovered by the method of this invention have lower mean square error and higher structural similarity, and can handle noise-type interference that monostatic SAR cannot handle, that is, this invention has more effective interference suppression capability.

The application discloses a holographic display method and system based on combined modulation extended space bandwidth product, and belongs to the technical field of holographic three-dimensional display. The system comprises a laser, a beam expanding and collimating system, a spatial light modulator (SLM), a high-resolution diffraction element and an imaging surface arranged in sequence along an optical path. The core of the method is that: firstly, the dynamically modulated SLM is physically cascaded with the static and phase known high-resolution diffraction element to expand the space bandwidth product of the system; secondly, an accurate cascaded wavefront propagation model is established, and the model corrects high-frequency scattering noise through a zero padding strategy. Finally, an optimization algorithm based on automatic differentiation and gradient descent is adopted to optimize the hologram displayed on the SLM in an end-to-end manner. Through the cooperation of software and hardware, the application effectively breaks through the space bandwidth product limitation of the traditional SLM, and can realize high-quality holographic three-dimensional display with a large field of view and low noise without increasing the complexity and cost of the system.