40results about How to "Good lap" patented technology

The invention relates to a preparation method of a diaphragm for a high-strength lithium-ion battery, belonging to the technical field of lithium-ion batteries. It includes the following steps: take polypropylene, silicon carbide powder, titanium oxide powder, chlorinated polyethylene, stearic acid, polysulfide rubber, tolylbisureidosilane, and plasticizer, mix them evenly, and put them into a twin-screw extruder The side feeding hopper is used for melting, kneading, extruding, cooling, drying, pelletizing, and film-making to obtain the base material; zirconia powder, pentaerythritol stearate, surfactant, antioxidant, stabilizer, Organic solvent, stir evenly to obtain a mixed solution; heat the substrate, and then apply the mixed solution on the substrate film; heat up, let cool, and that’s it. In the present invention, by doping the silicon carbide powder into the base material, a higher binding force can be formed between the surface coating and the strength of the diaphragm is improved.

The invention relates to a highly numerical control knitting machine with winding package and flying fluff adsorbing performance. The machine comprises a body and a winding column. The central portionof the body is provided with grooves, the inner ends of the grooves are connected to connecting rods, the top ends of the connecting rods are connected to fixed seats, and the top ends of the connecting rods are threadingly connected to the bottom ends of the fixed seats. Threaded rods are fixed to the front ends of the fixed seats, rotating shafts are connected to the top ends of the fixed seats, the front walls of the fixed seats are welded to the bottom ends of the threaded rods, left and right ends in the body are internally provided with threaded holes, and inner ends of the threaded holes are equipped with fixed screws. The highly numerical control knitting machine has the advantages that the rotating shafts are set, idle connecting rods can be conveniently stored through the grooves, through the threaded connection between threaded grooves in the top ends of the connecting rods and the threaded rods, the two pieces can be conveniently combined to be used together, and the two pieces can be conveniently separated and cleaned.

The invention relates to an environment-friendly decorative paper for artificial board facings and an artificial board adopting same. The decorative paper is prepared by the following method: corn starch is mixed with glycerol, chloroacetic acid and sodium hydroxide, the mixture is added with water and epichlorohydrin and squeezed to react, and the extrudate is added with water and heated to be gelatinized, so that a modified starch paste is obtained; after undergoing steeping, beating, moisture balancing and defibering, raw wood pulp is mixed with filler dispersant, retention aid, wet strength agent and the modified starch paste, and the obtained pulp sequentially undergoes forming, pressing and aging, so that a raw paper is obtained; after being ground, soybean meal is added with water and cellulase and undergoes enzymolysis while temperature is kept, and the enzymatic hydrolysate is added with NaOH to react while temperature is kept, so that a soybean protein glue is obtained; and after the soybean protein glue is used for being applied on the raw paper, calendering is carried out, so that the environment-friendly decorative paper is obtained. The environment-friendly decorativepaper does not contain formaldehyde, no formaldehyde is produced and released in the processes of preparation and use as well, the environment-friendly decorative paper has the effect of sealing formaldehyde in an artificial board substrate when hot-pressed to be laminated on the substrate, and therefore the release of formaldehyde in the substrate is greatly reduced.

The invention relates to a transition connection device for an aluminum alloy pedestrian bridge. The transition connection device comprises an inner vertical surface and an outer vertical surface, wherein the inner vertical surface is communicated with the outer vertical surface through a support frame; both the inner vertical surface and the outer vertical surface comprise upper chords, lower chords, vertical rods and oblique rods; the vertical rods and the oblique rods are used for connecting the upper chords and the lower chords together; the two ends of the lower chords are connected with connecting ends; a fixed support is arranged at the bottom of the connecting end on one side of each lower chord; a movable support is arranged at the bottom of the connecting end on the other side of each lower chord; joint points are set at the bottoms of the fixed support; and movable sliding chutes are formed at the bottoms of the movable supports. According to the transition connection device, the overall stress points of a bridge can be dispersed, concentrated stress points are reduced, meanwhile the bearing capacity and bearing area of a mouth-shaped aluminum alloy pedestrian bridge are increased, the stability of the mouth-shaped aluminum alloy pedestrian bridge is ensured, and the pedestrian bridge has the advantages of reasonable structure, high stability, high reliability, high durability and regular and practical overall effect.

The invention provides a heat-dissipating powder coating and a preparation method thereof. The powder coating comprises saturated carboxyl-terminated polyester resin, curing agent, composite heat-dissipating filler, alignment agent, titanium dioxide, polytetrafluoroethylene, aluminum pigment and other components; wherein The composite heat-dissipating filler is prepared from hexagonal boron nitride, aluminum hydroxide and aluminum oxide through ball milling, mixing and spheroidizing in sequence, which can effectively improve the thermal conductivity of the composite heat-dissipating filler and synergize with aluminum pigments, making the powder coating of the present invention It has a remarkable heat dissipation effect; the invention adds an alignment agent with a hydroxyl content of 1% to 2%, which has a strong affinity with aluminum hydroxide, aluminum oxide, magnesium aluminum silicate, and aluminum pigments, and effectively promotes the spheroidization of composite heat dissipation fillers and aluminum pigments The arrangement tends to be neat, and can effectively promote the establishment of a good overlap between the overall components in the formula, and generally prepare a powder coating with excellent comprehensive properties.

The invention belongs to the technical field of nanometer materials, and in particular relates to a preparation method of a silver nanowire conductive film. The preparation method comprises the following steps: providing a substrate; coating silver nanowire ink on the substrate to form an initial silver nanowire film; mixing the initial silver nanowire film with a solution containing ammonium ions and borohydride ions Mixing treatment and then drying treatment to obtain silver nanowire conductive film. The preparation method of the above-mentioned silver nanowire conductive film of the present invention effectively removes the PVP on the surface of the silver nanowire by utilizing the combination of ammonium ion and borohydride ion, so that the silver nanowire can be better overlapped, and finally improves the silver nanowire Conductive properties of conductive films.

The invention relates to a homogeneous earth dam and dam penetrating culvert pipe contact scouring anti-seepage grouting construction method and a grouting effect detection method, and belongs to thetechnical field of the hydro-junction. The detection method comprises the steps that after one week after grouting is finished, a high-density electrical method and other geophysical prospecting methods are used for detecting the continuity situation of a cement wall; then, part of soil mass within the grouting range is excavated for observing of the slurry veins and the lap joint situation between the adjacent slurry veins; and finally, part of the slurry veins are selected, the thickness of the slurry veins is measured, and the seepage resistance of the slurry veins is evaluated. According to the homogeneous earth dam and dam penetrating culvert pipe contact scouring anti-seepage grouting construction method and the grouting effect detection method, a seamless steel pipe is utilized as agrouting floral tube, and a good grouting effect is achieved; and the slurry vein thickness is uniform, the lap joint effect is good, and the slurry vein walking direction is controllable. Meanwhile,the invention provides a method for detecting and assessing the field grouting effect through a field excavation and high-density electrical method combining manner, systematic and quantitative analysis and assessment on the grouting effect can be achieved, and a reliable reference basis is provided for improving the construction technology according to the information fed back according to the grouting effect.

The invention relates to the field of airplane fuel oil system designing, specifically to a self-locking multifunctional gravity refill opening assembly for a mini airplane to solve the problem that a unidirectional ventilation function, oiling direction board and gravity refill opening cover can not be integrated in a conventional opening cap device and the structure of the opening cover device is complex. A sealing gasket and a wear-resistant pad are laminated with each other to ensure wear resistant performance, and a self-locking device and a gravity refill opening seat are better connected. An opening cover, a multifunctional fastening bolt, a ventilation assembly and a rubber valve are jointly form a unidirectional vent to prevent fuel oil or air in a fuel tank from flowing out of the vent. When the negative pressure of the fuel tank is great, ventilation of the fuel tank can be completed timely. The self-locking multifunctional gravity refill opening assembly is simple and delicate in structure, convenient for dismounting, and reliable in installation and sealing, the design weight is effectively reduced, and the safety of a fuel oil system is improved.