51results about How to "Fully fill the gap" patented technology

The invention belongs to the technical field of a rubber conveyor belt product, and particularly relates to a straight conveyor belt finger-model connector and a preparation method thereof. The straight conveyor belt finger-model connector comprises a straight finger-model skeleton structure, wherein the straight finger-model skeleton structure comprises a straight canvas layer; a rubberizing layer is arranged on the surface of the straight finger-model skeleton structure; a textile layer playing a reinforcement effect is arranged on the rubberizing layer; and a coverage rubber layer is arranged on the textile layer. The preparation method of the straight conveyor belt finger-model connector comprises the following steps of (1) stripping coverage adhesive; (2) removing residual adhesive; (3) cutting a finger model; (4) coating adhesive cement; (5) splicing the finger model; (6) forming a finger-model connector; and (7) vulcanizing the finger-model connector. Due to the adoption of the straight conveyor belt finger-model connector, the strength of the connector is improved; and the preparation method is simple and easy to operate.

This invention relates to a method for preparing heat-dissipation grease, which comprises a polymer matrix and a heat-conducting filler at a weight ratio of (3-7): 1. The thermal conductivity coefficients of the polymer matrix and the heat-conducting filler are 0.1-0.2 W / mK and 20-1000 W / mK, respectively. The method comprises: providing a polymer matrix and a heating-conducting filler, and mixing at a weight ratio of (3-7): 1 to obtain the heat-dissipation grease.

The invention discloses strile absorbent sutures for gynaecology and obstetrics and a preparation method of the strile absorbent sutures. The strile absorbent sutures for the gynaecology and obstetrics are prepared by taking chitosan silk threads as core threads, taking modified polylactic acid silk threads as shell threads, after stranding braiding, immersing the chitosan silk threads and the modified polylactic acid silk threads into coating liquid containing calcium stearate and polylactic acid and drying the liquid. Through the preparation method, the mechanical properties and hydrophilicproperties of the polylactic acid can be improved, and the prepared sutures have high strength and good biocompatibility; chitosan in the inner part of the sutures degrades slowly, while long-term antibacterial action is achieved, the sutures can further gradually form a hollow structure, thus ingrowth and healing of tissue is promoted, and the effect of accelerating the healing of the tissue is achieved; and the overall preparation process is simple and convenient to control, and needs of practical production and application can be met.

The invention relates to a pressure welding method for large-area target which belongs to the welding field of metallic materials, and the method comprises the following steps that: (1) a roughening treatment is applied to the surface to be welded of the target; (2) the surface to be welded of a backplane is processed into a non-planar structure; (3) the surfaces to be welded of the target and backplane are washed and dried: (4) the backplane is heated and the preheated target or target at normal temperature is placed on the backplane and pressed, so as to deform the curved surface of the backplane till a bonding between two surfaces to be welded is achieved by pressing; (5) the target and the backplane are heated to the temperature which is 0.50 to 0.85 time of the melting point of one with lower melting point in the both and welded under the condition of heat insulation after being clamped tightly. The method has low processing requirement for the equipment and the surface to be welded and can ensure that no oxygen problem exists between the large-area target and the surface to be welded of the backplane, the air around the contacting surface between the target and the backplaneis completely discharged, firm bonding between the target and the backplane is realized in the atmosphere environment, simultaneously the microstructure performance of the target is not affected and problems of severe deformation, etc do not happen to the bonding surface between the target and the backplane.

The invention provides a seepage-proofing leaking-stopping material and a preparation method thereof. The seepage-proofing leaking-stopping material comprises leaf fibers, gypsum, an expanding agent, cement and water. The leaf fibers are added to the cement, so that the tensile strength of cement mortar is improved. Meanwhile, the cost of the seepage-proofing leaking-stopping material can be greatly reduced through the leaf fibers, and the seepage-proofing leaking-stopping material can be widely applied to the fields of tunnels and underground structures, mine excavation and water conservancy and hydropower foundation reinforcement projects and the like.

The invention discloses a road repairing module, which includes a precast block. The precast block is in an prismatic shape and is internally provided with continuous steel reinforcement, irregular folds are arranged on the edge slope of the precast block, the precast block is installed in a roadbed to be filled, a slope extending to the roadbed side is arranged in the road surface edge of the periphery of the roadbed, an connecting area with an inverted trapezoidal section is formed between the road surface and the precast block, positioning holes are uniformly formed in the bottom of the connection area, ground piles are fixed to the positioning holes, the ground piles are located in the connection area, and fixing jaws are fixedly installed on the peripheries of the ground piles. A roadrepairing method is applicable to a cement concrete road and an asphalt concrete road, a connection layer is filled in the connection area, the irregular folds are arranged on a precast block slope and the road slope to ensure connection stability of the connection layer, the construction period of the road surface is shortened, and the financial cost is lowered.

The invention provides a high temperature resistant and low-modulus heat conducting organic silicon material which is prepared from the following raw materials: silicone oil, heat conducting powder filler, a low-modulus auxiliary, a high temperature resistant auxiliary, a crosslinking agent and a platinum catalyst, wherein the mass ratio of the silicone oil to the heat conducting powder filler is (90-110):(900-1,100); the mass ratio of the heat conducting powder filler to the low-modulus auxiliary is 100:(0.5-2); the mass ratio of the silicone oil, the high temperature resistant auxiliary, the crosslinking agent and the platinum catalyst is 100:(0.1-1):(5-15):(0.1-0.2) in turn. The invention belongs to the technical field of organic silicone. The heat conducting organic silicon material provided by the invention has the advantages of high long-term stability of heat dissipation in a high-temperature condition, low modulus, easy gap fitting, low thermal resistance and no oil leakage or volatilization; automatic adhesive dispensing construction can be realized; a better interface heat conducting material is provided between a heating component of an electronic appliance and a heat dissipation device or apparatus.

The invention discloses a switch device with a layered structure and convenient to assemble, and relates to the technical field of switch devices, in particular to a switch cabinet body, a reinforcing baffle and a mounting support plate, the surface of the switch cabinet body is connected with a protective cabinet door, a protruding door plate is welded to the inner side of the protective cabinet door, and an observation window is embedded in the upper end of the surface of the protective cabinet door. A heat dissipation groove is formed in the lower end of the surface of the protection cabinet door, the reinforcing baffle is fixed to the inner surface of the opening of the switch cabinet body, and the outer side of the reinforcing baffle is connected with a connecting insulation rubber sleeve. The switch device with the layered structure and convenient to assemble is provided with an adjusting positioning plate, the surface of the adjusting positioning plate is provided with a large number of inverted trapezoidal groove openings which are distributed at equal intervals, and the structures of the groove openings are matched with upper inverted hooks at the two sides of a placing bearing plate, so that the placing bearing plate can be buckled and positioned conveniently; and the placing bearing plate can be adjusted and positioned through equidistantly distributed groove openings, so that a user can freely adjust the placement bearing plate to reasonably divide the internal space of the switch cabinet body.

The invention discloses a novel 3D printer and a printing process control method thereof. The novel 3D printer comprises a printer body which comprises a cabinet, a first support and a second support, wherein the first support and the second support are arranged on the two sides of the cabinet; a laser scanning device is arranged on the bottom face of the cabinet, a reflector is arranged in the center of the bottom face of the cabinet, and a resin groove is formed over the reflector; high-transmitting quartz glass is fixedly arranged on the bottom face of the resin groove and fixedly arranged on an iron plate, a lifting table is arranged over the resin groove, and the iron plate is connected with a first lifting device; and the lifting table is connected with a second lifting device which is arranged on the first support, and a resin extrusion mechanism is arranged on the second support. As the first lifting device, the second lifting device and the resin extrusion mechanism are in linkage, the control process is simplified according to the 3D printer and the printing process control method of the 3D printer; and in addition, accurate control over the resin flake thickness of the section profile of a product is facilitated.

The invention belongs to the technical field of a rubber conveyor belt product, and particularly relates to a straight conveyor belt finger-model connector and a preparation method thereof. The straight conveyor belt finger-model connector comprises a straight finger-model skeleton structure, wherein the straight finger-model skeleton structure comprises a straight canvas layer; a rubberizing layer is arranged on the surface of the straight finger-model skeleton structure; a textile layer playing a reinforcement effect is arranged on the rubberizing layer; and a coverage rubber layer is arranged on the textile layer. The preparation method of the straight conveyor belt finger-model connector comprises the following steps of (1) stripping coverage adhesive; (2) removing residual adhesive; (3) cutting a finger model; (4) coating adhesive cement; (5) splicing the finger model; (6) forming a finger-model connector; and (7) vulcanizing the finger-model connector. Due to the adoption of the straight conveyor belt finger-model connector, the strength of the connector is improved; and the preparation method is simple and easy to operate.

A method for preparing a gluing component comprises the following steps: providing a first base material and a second base material; adopting transparent optical cement to glue the first base material and the second base material; heating and debubbling the first base material and the second base material which are glued; and adopting ultraviolet light to irradiate and harden the first base material and the second base material which are heated, debubbled and glued, and obtaining the gluing component. According to the method for preparing the gluing component, the transparent optical cement is softened and has a certain fluidity through the heating and debubbling, so that a gap between glued objects can be sufficiently filled; meanwhile, bubbles between the transparent optical cement and the glued objects are removed completely through the vacuum debubbling treatment; and then the transparent optical cement is hardened through ultraviolet light irradiation, so that a gluing property is sufficiently achieved, gas molecules in the hardened optical cement has low possibility of accumulation, then visually visible accumulated bubbles are not formed, and accordingly, the problem of bubbles of the gluing component can be effectively solved.

A tungsten-based material with both solid solution and dispersion strengthening and a preparation method thereof belong to the technical field of powder preparation engineering. The preparation method uses industrially pure W powder and Zr and M metals as raw materials. First, ZrM amorphous strips are obtained by arc melting and strip quenching technology; Mixing and preparing materials; finally, the materials are ball milled, pressed and sintered to obtain blocks (W 100‑a Zr a ) 100‑b m b Tungsten-based materials. The tungsten-based material includes W, Zr and M elements, wherein M is one of Fe, Co and Ni elements, a and b are atomic percentages, and their values ​​are 0.5≤a≤8, 0<b≤3. The invention can fully fill the gap between W powder particles to obtain a high-density sintered body of tungsten-based materials; the obtained product has both solid solution and dispersion double strengthening characteristics; it is beneficial to improve the strengthening and toughening effect of tungsten-based materials, and greatly broadens the The preparation of materials controls process parameters, which helps to reduce material production costs and improve material yield and production efficiency.

The invention relates to a low-quantity super-hydrophobic packaging paper and a preparation method thereof, comprising packaging base paper, a hydrophobic coating, a micron-structure coating and a nano-structure coating; the hydrophobic coating is composed of low melting point wax; the micron structure The coating is composed of high melting point wax; the nanostructure coating is composed of modified nano silicon dioxide. The packaging base paper is obtained by wax emulsion coating and modified silica coating, and then soft roll calendering; the mixed wax is in the state of micron particles, which can fully fill the gaps between the fibers on the surface of the paper; at the same time, the hydrophobic nano-silica particles are filled Between the fiber and the micron wax, a hydrophobic micro-nano structure is formed, which can significantly improve the hydrophobicity of the paper, increase the contact angle and reduce the rolling angle; the whole production process is simple to operate, low energy consumption, environmentally friendly, and does not involve fluorine chemicals or organic solvents. It has a good application prospect.