34results about How to "Not suitable for breaking" patented technology

The invention relates to high-permeability epoxy waterproof paint. The high-permeability epoxy waterproof paint is prepared from modified epoxy resin and a part of high-permeability materials. The paint is prepared from a component A, and a component B. The component A is prepared from 50-75 parts of bisphenol A epoxy resin, 5-15 parts of reactive diluents, 10-20 parts of epoxy resin active flexibilizer and 20-40 parts of benzene diluents. The mixed diamine curing agent is prepared from 15-20 parts of polyether amine D 2000 and 10-15 parts of D 230. The component B is prepared from the mixed diamine curing agent, 50-70 parts of diluents, 2-5 parts of accelerant and 20-30 parts of benzene diluents. The solution A and a solution B are mixed to obtain the paint. The paint has high permeability and flexibility and can permeate and repair cracks and pores in surfaces of concrete, and a sealed whole waterproof structural layer is formed on the surfaces of concrete. Even when surface film forming matter is damaged, the surfaces of the concrete are closed by the paint to form the compact waterproof structure layers, and therefore the permanent waterproof effect is achieved.

A steel bridge deck laying structure comprises a bonding layer, an elastic anti-cracking layer and an abrasion layer. The elastic anti-cracking layer is laid on the upper surface of the bonding layer, and the abrasion layer is tightly attached to the upper surface of the elastic anti-cracking layer. The bonding layer is made from bi-component polyurethane modified special resin glue, the elastic anti-cracking layer is made from bi-component high-thixotropic purely elastic polyurethane modified polymer gravels, and the abrasion layer is made from bi-component polyurethane modified polymer gravels.

The invention discloses a rapier head for a rapier loom, which is composed of the following components in parts by weight: 60-80 parts of polyformaldehyde, 10-15 parts of aramid fiber, 5-10 parts of polytrimethylene terephthalate, 5-8 parts of polyolefin elastomer, 3-4 parts of ethylene-vinyl acetate copolymer, 1-3 parts of silane coupling agent KH550, 4-6 parts of calcium carbonate whisker, 1-3 parts of nano silicon dioxide and 1-2 parts of anti-aging agent nickel dibutyldithiocarbamate. The preparation method comprises the following steps: compounding an engineering plastic with other reinforcing materials, and blending and granulating through a double screw extruder; and molding the prepared composite material through an injection molding machine to obtain the rapier head.

The invention relates to strippable heat-proof antirust protective film coating and a preparation method thereof. The raw material of the protective film coating is formed by paint and curing agent. The paint comprises, by weight, 88-96 parts of linear chain polyester resin or acrylic resin containing hydroxide radical, 2.0-5.0 parts of stripping accelerant, 1.0-3.0 parts of film-forming accelerant, 0.5-2.0 parts of antifoaming agent and 0.5-2.0 parts of flatting agent. The curing agent comprises, by weight, 25-40 parts isocyanate polymer. The linear chain polyester resin or the acrylic resin containing the hydroxide radical is heated and stirred and then added in other components except the curing agent, the isocyanate polymer is added in the mixture during usage, and the strippable heat-proof antirust protective film coating is obtained after even mixing. The strippable heat-proof antirust protective film coating does not contain solvent, meets environment-friendly requirements, simultaneously has high waterproof performance, oil resistance, temperature resistance, abrasion resistance and strippable performance, can have metal surfaces, stripping surfaces, plastic surfaces and the like at the same time, and has temporary antirust protection effects.

The invention discloses a polyethylene terephthalate composite mesoporous membrane, a preparation method and application thereof, and belongs to the field of membrane materials. That is, the mesoporous material silica is assembled in the polyethylene terephthalate film to form a composite mesoporous film. The preparation method is to assemble the inorganic mesoporous material in the holes in the polyethylene terephthalate membrane by suction filtration to obtain a composite mesoporous membrane, and then remove the intermediary of the composite membrane by extraction and elution. The surfactant in the porous material is used to obtain a polyethylene terephthalate composite mesoporous membrane. The preparation method of the present invention has the characteristics of simplicity and rapidity. In addition, the polyethylene terephthalate composite mesoporous membrane can be applied not only to size-selective molecular transfer and separation in aqueous solution but also to Size-selective ion transfer at liquid / liquid interfaces, etc.

The invention discloses a universal aligning and loading mechanism for an upper plate of a double-sided polishing machine. The universal aligning and loading mechanism comprises a primary air cylinder which is used as a positive-pressure and negative-pressure source, wherein the primary air cylinder is fixedly connected with a rack beam through an air cylinder mounting plate; a secondary air cylinder is connected below the primary air cylinder, a guide rod supporting plate is fixedly connected with the lower end surface of the secondary air cylinder; a piston rod of the secondary air cylinder is connected with a connecting rod below the secondary air cylinder through a tension sensor; a joint bearing is fixed on the connecting rod; a universal rod is arranged in the joint bearing in a penetration manner; the universal rod is fixedly connected with a bearing base; an outer supporting sleeve is arranged at the outer side of the bearing base; the outer supporting sleeve is fixedly connected with a bearing plate below the outer supporting sleeve; the bearing plate is fixedly connected with a supporting ring above the bearing plate through a supporting rod; the bearing plate is further fixedly connected with the upper plate below the bearing plate through the supporting rod. The aligning and loading mechanism disclosed by the invention realizes flexible contact of two working surfaces, so that the fitting coincidence, the parallelism degree and the pressure of the two working surfaces are precisely controlled.

The invention discloses an etimicin sulfate preparation method. The etimicin sulfate preparation method includes the steps of protecting amino groups at 3, 2', 6' and 3' of gentamicin C1a with Fmoc-Cl and performing purification and evaporation to dryness to obtain quadrifluorenyl methoxycarbonyl gentamicin C1a; adding N-ethyl of an acetaldehyde aqueous solution under acidic conditions and performing reduction with sodium triacetoxyborohydride; finally adding a piperidine / DMSO (dimethylsulfoxide) solution for deprotection; performing secondary purification on an reaction solution with weakly acidic cation adsorption resin after performing primary purification on the reaction solution with a macroporous adsorption resin column and adding sulfuric acid to a purified product to obtain etimicin sulfate through reaction. The etimicin sulfate preparation method is high in selectivity and less in side reaction in group protecting, mild in reaction conditions, simple in operation and easy to perform industrial production during the whole reaction process and high in purity and yield of the product. (An equation as shown in the description).

A Nb based on layer-by-layer stacking 3 The preparation method of Al superconducting precursor wire mainly includes: A. Preparation of Nb-Al composite sheath: Nb foil and Al foil are alternately stacked in the rectangular groove of the tubular Nb box from bottom to top, and the upper cover is covered , in the Cu tube, welded and sealed; B. Preparation of Nb-Al single mandrel: the Nb-Al composite sheath is hydrostatically extruded, repeatedly drawn, and then corroded to remove the copper to obtain the Nb-Al single mandrel. Mandrel; C, Nb 3 Preparation of Al superconducting precursor wires: multiple Nb‑Al single mandrels are packed closely into Cu or Cu alloy sheaths, and multi-cores are obtained by electron beam sealing welding, hydrostatic extrusion, and repeated drawing. Wire rod; then corrode to remove copper. The method is simple to operate, the assembly filling rate of the foil material is high, and the compactness of each layer of foil material is uniform. The final superconducting wire prepared by it has good performance, strong consistency and high qualified rate. It is especially suitable for the preparation of long superconducting wires.

The invention relates to a component in the field of light guide communication. The invention provides a conical connector aiming at the problem of poor mechanical property of connectors. According to the conical connector, a tail handle is connected with an insertion core; a location element sleeves the junction of the tail handle and an optical cable; an inner column is arranged on the insertion core in a sleeving manner, provided with a sealed end which is in contact connection with one end of the insertion core, and connected with the location element; the tail handle is a conical tail handle; the conical tail handle is a conical sleeve; a small hole is formed in the inner side of the insertion core; the top of the conical sleeve is fixedly connected with the other end of the insertion core; a bare optical fibre section is completely inserted in the small hole in the inner side of the insertion core from the bottom of the conical sleeve; a reinforcing element and a coated optical fibre section are arranged in the conical tail handle and fixed; an inner hole in one end of the location element is a conical inner hole matched with the conical tail handle, and an inner hole in the other end is a butterfly-shaped inner hole matched with a butterfly-shaped electric cable; the butterfly-shaped inner hole is formed in a butterfly-shaped optical cable portion at the junction of a butterfly-shaped optical cable and the conical tail handle; the conical inner hole end is arranged at the conical tail handle end in a sleeving manner, and the conical inner hole end is fixedly connected with an inner column open end. The conical connector is suitable for an optical fibre connector.

The invention provides a motor iron core with a sealing structure and a combination device. A structure of the motor iron core is that the internal wall at the bottom of a notch of an iron core tooth groove is in a stair shape; thermal expansion materials are abutted to the surface of a lower layer stair; the thickness of the expansion materials is higher than the altitude difference between the lower layer stair and an upper layer stair. According to the technical scheme, the internal wall at the bottom of a notch of the iron core tooth groove is machined to be in the stair shape, the thermal expansion materials are arranged at the stair positions, then a sealing structure is formed between the slot wedge and the internal wall of the tooth groove of the iron core, moisture is prevented from entering into the interior of the tooth grove of the iron core and damaging an insulating structure, and paint loss after vacuum pressure impregnation is blocked.

The invention discloses an array substrate, a display device and a manufacturing method of the array substrate. The array substrate includes a substrate, a thin film field effect transistor and a data line formed on the substrate, and the thin film field effect transistor includes a gate electrode, an active layer , a source electrode and a drain electrode, a gate insulating layer is formed between the gate electrode and the active layer, and the array substrate includes: a protective layer formed between the gate insulating layer and the data line, and It is in direct contact with the data line; the protective layer is set on the same layer as the active layer and made of the same material. The beneficial effects of the embodiment of the present invention are as follows: a protective layer is provided between the data line and the gate insulating layer, the data line is in direct contact with the protective layer, there is no gap bubble between the protective layer and the data line, and when the data line is etched, the protective layer The data line is protected to prevent the data line from being corroded and broken.

The invention discloses a soft film type coal flame retardant and dust suppressant and a preparation method thereof. The raw materials include the following components in parts by mass: 1.0-3.0 parts of modifier, 8.0-9.0 parts of butyl acrylate, 1.5 ‑1.7 parts of functional monomers, 0.5‑0.8 parts of flame retardant monomers, 0.01‑0.5 parts of phase transfer catalysts, 28.0‑45.0 parts of polymerization main monomers, 2‑3.5 parts of emulsifiers, 0.3‑0.6 parts of initiators, 1.0‑2.0 parts Part pH buffer, 60.0‑110.0 part deionized water, 1.0‑3.0 part flame retardant. This flame retardant dust suppressant can form a dense polymer soft film with good mechanical stability and flexibility on the surface of the material in a short period of time after spraying. The formed film is not suitable for rupture and has strong wind erosion resistance and Concussion. Since nitrogen and phosphorus are added to the flame retardant and dust suppressant system, this polymer soft film forms a nitrogen-phosphorus synergistic flame retardant system, which has excellent flame retardant performance and can prevent the contact between air and coal , so as to prevent the spontaneous combustion of coal.

The invention relates to a hidden column type polypropylene hollow enclosing and blocking partition plate. The hidden column type polypropylene hollow enclosing and blocking partition plate comprises an upper beam, a lower beam, hidden columns, an H-shaped clamping groove, an angle steel backing supporting bar, diagonal angle steel and a polypropylene hollow plate, wherein the upper beam and the lower beam are respectively provided with a groove, connecting lug plates with strip-shaped holes are arranged on two sides of each hidden column, and the upper beam, the lower beam and the angle steel backing supporting bar are fixedly connected between the two hidden columns through the connecting lug plates on the hidden columns. Through the unique design of transversely reserved clearance and longitudinally reserved clearance, the hidden column type polypropylene hollow enclosing and blocking partition plate solves the technical problem that a polypropylene material deforms by expanding with heat and contracting with cold when the polypropylene material is applied outdoors; the polypropylene hollow plate is adopted and is good in toughness, high in strength, not prone to ruptures, and good in sound insulation; the hidden column type polypropylene hollow enclosing and blocking partition plate has the advantages of being low in weight, dampproof, nontoxic, and resistant to impact, oil contamination and chemical corrosion, thereby having quite good environmental friendliness and social benefit when used in the field.

The invention discloses an organic-inorganic compound mesoporous membrane and a preparation method and an application thereof, belonging to the field of membrane materials. The preparation method thereof includes three steps, namely the preparation of precursor solution, the filtration preparation of compound mesoporous membrane and the elution of surface active agent in the membrane, namely thatthe method of filtration is mainly used for assembling inorganic mesoporous materials in pores in a polycarbonate membrane so as to prepare the compound membrane, and the mode of extraction and elution is utilized for eliminating the surface active agent in the compound membrane, thereby obtaining the organic-inorganic compound mesoporous membrane; and the pore diameter of the mesoporous materialin the membrane is 3.0nm or 8.0 nm. Compared with the formerly reported inorganic compound mesoporous membrane, the organic-inorganic compound mesoporous membrane has better flexibility, hard breakage and better acid and alkali resistance. Besides, due to the ordering and the nanometer size effect of the pore diameter of the mesoporous structure, the organic-inorganic compound mesoporous membrane can be applied to the fields of molecular dimension selective transfer, membrane separation, etc.

The invention discloses a novel application method for an automobile tail door trim bottom felt recovered material, belongs to the technical field of material recovering, and mainly relates to an automobile recovered material application method. In order to solve the problems such as a low material recovery rate and low quality of a product manufactured from the waste in the prior art, the novel application method comprises the following steps of: step I, dividing the recovered materials into two types according to a PP material component and a PET material component; step II, grinding the PET material into micro powder; step III, pulverizing the PP material into particles; and step IV, compounding PP fibers with PET particles, thereby manufacturing a felt body. According to the novel application method, the used raw materials can be waste raw materials produced inside a plant, the material components are controllable, and the technological process is simple.