9results about How to "Solve the durability problem" patented technology

The invention discloses a segmented series spring shock absorber and machining equipment, and belongs to the technical field of vehicle shock absorption. The shock absorber comprises a gas spring, a heavy-load spring, a light-load spring and a retainer, wherein the retainer is arranged between the light-load spring and the heavy-load spring; a load energy release device and a temperature adaptation assembly are further arranged on the retainer, and the load energy release device comprises a bearing disc, an annular storage cavity and an energy release pad and is used for absorbing beat vibration energy; the temperature adaptation assembly comprises a ventilation hole and a friction pad, heat generated by the friction pad can be transmitted to the energy release pad, and low-temperature compensation and high-temperature heat dissipation are achieved. The invention further provides milling equipment for machining the clamping-in groove and the wedge-shaped groove, precise machining of the wedge-shaped groove is achieved through the eccentric milling principle, and the pressure relieving assembly ensures that a cutter stably stretches out through buffering of non-Newtonian fluid. The problems of response accuracy, retainer stability, beating vibration durability and temperature adaptability of the shock absorber under different load working conditions are effectively solved.

The invention discloses a strong-sun-protection moisture-absorption quick-dry breathable dry elastic fabric and a preparation process thereof, and relates to the technical field of fabrics. The preparation method comprises the following steps: step 1, preparing polyester spandex core-spun yarns by taking polyester yarns with a sun-proof function as sheath yarns and spandex yarns as core yarns; tatting by taking the fabric as warp yarns and weft yarns to obtain a tatted fabric; 2, the woven fabric is sequentially subjected to low-temperature pretreatment with alkali liquor, first cation finishing liquid treatment, sulfonic gelatin finishing liquid treatment and second cation finishing liquid treatment; and performing high-temperature setting to obtain the strong-sun-protection moisture-absorption quick-drying breathable dry elastic fabric. In the application, the covering yarn with the sunscreen property is used as an internal sunscreen layer, and the finishing layer on the surface of the fabric is used as an external sunscreen layer, so that the high-strength ultraviolet protection property of the fabric is synergistically realized; meanwhile, the prepared fabric has excellent moisture absorption and quick drying properties and washing fastness.

The utility model discloses a kind of dry concrete sleeve tenon-and-mortise connection integrated modular building systems, including top plate, bottom plate and the integrated several boxs by four corners L-shaped shear wall and partition wall, the wall body reinforcement of the L-shaped shear wall is composed of several main force steel bars in vertical direction and several structural steel bars in horizontal direction, the L-shaped shear wall is equipped with connecting recess in the upper and lower ends of the main force steel bar, the outer end of the structural steel bar.All adopt factory integrated production and processing, box adopts basalt rib, the horizontal and upper and lower connection of box and box all adopt standard high-performance concrete suite connection, the transmission of horizontal force between box is transmitted by the friction and mechanical bite force formed by suite and recess, improve the overall performance of structure, can realize horizontal load transmission to two directions simultaneously;The present application is high in degree of assembly, can realize the factory production of structure decoration integration, and can realize the diverse combination between box.

This invention relates to the field of nonwoven fabric technology, and in particular to an antibacterial, anti-backflow, and easily permeable ES fiber hot-air nonwoven fabric. The ES fiber has a core-sheath composite structure, including a sheath layer and a core layer. The sheath layer uses hydrophobic PE as the matrix and, by mass percentage of the hydrophobic PE matrix, includes the following components: 0.5-1% antibacterial agent, 2-3% dispersant, 0.2-0.3% antioxidant, and 1-10% hydrophilic PE masterbatch. The mass ratio of the sheath layer to the core layer is 4-5:5-6. The core layer is made of PET or PP. The advantage of this invention is that by optimizing the sheath-core ratio, the amount of additives, and the process parameters, the ES fiber hot-air nonwoven fabric simultaneously meets the requirements of rapid permeation, anti-backflow, long-lasting antibacterial effect, softness and skin-friendliness, and structural strength. It breaks through the performance bottleneck of traditional sanitary product surface layers, which are characterized by "hydrophilicity leading to easy backflow, hydrophobicity leading to slow permeation, and short-lasting antibacterial effect," and solves the defects of existing materials with single functions.

The invention discloses a prestressed roof truss beam tensioning method which comprises the following steps: S1, prefabricating a component: binding a steel reinforcement framework, mounting an embedded part, setting a reserved hole channel, and pouring and maintaining concrete in sequence to form a roof truss beam concrete component with the reserved hole channel; the prestressed steel strand is penetrated into the reserved hole channel, the prestressed steel strand is an intelligent sensing steel strand, the structure of the prestressed steel strand is that an optical fiber rope is replaced or merged into the center wire position or the stranded rope core of the prestressed steel strand, at least a plurality of optical fiber sensors are packaged in the optical fiber rope, and the optical fiber sensors are arranged in the optical fiber rope; and a plurality of steel wires are uniformly arranged outside the optical fiber rope or the central wire. According to the method, the tensioning quality is improved from'result verification 'to'process controllability and result knowing', the controllability and precision of the tensioning process are achieved, the problem that prestress application is unqualified due to unsmooth hole channels, equipment errors and the like is solved, and it is guaranteed that the initial state of the structure is healthy.

The present invention relates to a separator, a method of preparing the same, and a secondary battery including the same, the separator including a porous substrate, a ceramic coating layer disposed on at least one surface of each surface of the porous substrate, and a positively charged self-assembled monolayer disposed on the ceramic coating layer.

The invention relates to the technical field of novel organic silicon materials and fine chemical engineering, in particular to redox response type cross-linked silicon paste containing fullerene and ferrocene groups as well as a preparation method and application of the redox response type cross-linked silicon paste. The preparation method of the cross-linked silicon paste comprises the following steps: adding a vinyl modified filler, a fullerene cross-linking agent and a resin cross-linking agent into carrier oil under a stirring condition, mixing, adding a catalyst, and carrying out a hydrosilylation reaction to form primary cross-linked silicon paste particles with an interpenetrating network structure; and adding a functional end-capping reagent and a catalyst, continuously reacting, and adding carrier oil after the reaction is finished. The cross-linking density is controllable, the mechanical strength is high, the surface hydrophilic and hydrophobic intelligent switching function is achieved, and intelligent conversion of hydrophilic easy emulsification during processing and hydrophobic strong foam inhibition during use is achieved. The organic silicon defoaming agent is applied to a defoaming agent, hydrophilic in an oxidation state assists emulsification, hydrophobic in a reduction state assists foam inhibition, and the contradiction that the emulsification stability and the foam inhibition durability of a traditional organic silicon defoaming agent are difficult to consider at the same time is solved.

The invention relates to the technical field of electric vehicles, and discloses a high-temperature charging control method and system for a pure electric vehicle, and the method comprises the following steps: responding to a charging gun connection signal, and obtaining the environment temperature of the environment where the vehicle is located and the initial cell temperature of a power battery; when the environment temperature exceeds a preset high-temperature threshold value and it is detected that the charging pile is in a fast charging mode, pre-cooling judgment logic is started, and a pre-cooling request is sent to a vehicle control unit; and a cooling instruction generated by the vehicle control unit based on the pre-cooling request is received and responded, and a cooling device is controlled to operate at the pre-cooling power lower than the rated power of the cooling device, so that the power battery is pre-cooled in the early stage of charging. According to the method, the temperature rise trend can be pre-judged, intervention can be intervened in advance, active thermal management is realized, and the contradiction between the limited fast charging speed and the service life loss of the battery in a high-temperature environment is fundamentally solved.

The invention relates to the technical field of semiconductor devices, and provides a ferroelectric transistor and a preparation method and application thereof.The preparation method of the ferroelectric transistor comprises the following steps that a semiconductor layer is formed on a substrate, after patterning and etching are completed through a photoetching technology, the semiconductor layer is thermally oxidized at a preset temperature, the semiconductor layer is converted into a ferroelectric layer in situ, and the ferroelectric layer is formed; forming a heterostructure of the two; then photoetching and exposing source and drain electrode patterns, depositing metal through electron beams or thermal evaporation, and finishing source and drain electrode patterning in combination with a Lift-off process; preparing a dielectric layer on the ferroelectric layer by an atomic layer deposition method; and finally, photoetching and exposing the pattern of the top electrode, and completing the preparation of the top electrode through evaporation and Lift-off processes. According to the method, an atomic-scale ultra-flat uniform interface is realized, the adverse effect of an interface defect state and a depolarization field on ferroelectric performance can be effectively inhibited, the device has the advantages of low working voltage, high fatigue resistance and high-speed response, meanwhile, the device has the advantages of low thermal budget, high process compatibility and high expandability, and the overall device is excellent in performance.