89results about How to "Applicable protection" patented technology

The invention provides an ultraviolet curing coating composition with high wear resistance and fingerprint resistance and a preparation method thereof. The composition is prepared from the following components in parts by weight: 30-50 parts of high-functionality acrylate resin, 5-15 parts of fluorine-modified acrylate oligomer, 5-20 parts of an acrylate monomer, 5-15 parts of nanoparticle dispersion liquid, 5-9 parts of a photoinitiator, 0.05-2 parts of an auxiliary agent and 30-50 parts of a solvent. Compared with the prior art, the steel wool of the prepared ultraviolet curing coating composition is excellent in wear resistance and has fingerprint resistance and hand sweat resistance; and the coating has high hardness, is suitable for surface protection of plastic base materials, has excellent comprehensive performance, and can be applied to the related fields of mobile phone plastic rear covers, mobile phone films and the like.

The invention relates to polyvinyl alcohol/sodium alginate medicine-loading hydrogel dressing having light-responsive bacteria resistance and a preparation method of the polyvinyl alcohol/sodium alginate medicine-loading hydrogel dressing, wherein a macromolecular medicine realizing fracturing under ultraviolet light is distributed inside the hydrogel dressing. The preparation method of the polyvinyl alcohol/sodium alginate medicine-loading hydrogel dressing comprises the following steps: grafting micromolecule antibiotic, namely, levofloxacin to polyethylene glycol macromolecular chains with amino groups at two ends through molecules with ultraviolet light response property, thus obtaining the macromolecular medicine realizing fracturing under ultraviolet light; and carrying out repeated freezing and thawing on a mixed solution of polyvinyl alcohol solution, sodium alginate solution and the macromolecular medicine realizing fracturing under ultraviolet light, thus obtaining the polyvinyl alcohol/sodium alginate medicine-loading hydrogel dressing having light-responsive bacteria resistance. The adopted raw materials have good biocompatibility, the obtained hydrogel dressing has certain mechanical property and has the ultraviolet-light-responsive antibacterial property, namely, the hydrogel dressing can realize controlled release of antibiotics under irradiation of 365nm ultraviolet light, and thus the polyvinyl alcohol/sodium alginate medicine-loading hydrogel dressing is suitable for protecting and treating the wound surface.

The invention relates to the field of anticorrosive coatings, in particular to a solvent-free epoxy heavy-duty anticorrosive coating and a preparation method thereof. The solvent-free epoxy heavy-dutyanticorrosive coating comprises a component A and a component B; the component A comprises 100 parts of a solvent-free epoxy resin, 8-16 parts of a active diluent, 70-115 parts of a pigment and filler, 1.5-2.6 parts of a coupling agent, 1.5-2.6 parts of a dispersing agent, and 0.8-1.3 parts of a thixotropic agent; and the component B is a curing agent, and the mass ratio of the component B to theliquid epoxy resin in the component A is (1.5:1)-(3.5:1). The solid content of the heavy-duty anticorrosive coating is 98% or more, and the coating is an environment-friendly coating; the coating contains only a very small amount of a volatile organic solvent, so that only a small amount of shrinkage cavities and pinholes are formed after the coating is cured, and the compactness of the coating effectively increases the barrier properties and permeability resistance of an anticorrosive coating layer.

A semi-submersible wave absorbing wall suitable for offshore floating bodies comprises a floating box platform and a wave absorbing and breaking component arranged on the floating box platform. The wave absorbing and breaking component comprises a plurality of layers of wave absorbing modules, the wave absorbing modules on the upper and lower layers are fixedly supported through a support, each wave absorbing module comprises a base body and transverse sheet wave absorbing tiles arranged a wave facing face and a wave departing face of the base body, open holes are formed on each wave absorbing tile, the bottom of the floating box platform is connected at the seabed through an anchor chain system, an internally-arranged groove rail is arranged on the upper surface of the floating box platform, a pulley matched with the groove rail is arranged below the wave absorbing module on the downmost layer of the wave absorbing and breaking component and fixedly connected with the wave absorbing modules through a connecting rod, and the connecting rod is connected with a hydraulic cylinder piston rod of a hydraulic system. The semi-submersible wave absorbing wall is reasonable in structural arrangement, easy to manufacture, good in wave absorbing and breaking effect, capable of being used for detection and prewarning of sea state and especially suitable for protection of large offshore floating bodies.

The invention discloses a two-dimensional vibroswitch device for a windmill generator, which comprises a shell, a sliding sleeve, a support seat, a swinging rod, a sliding rod and a pushing rod, wherein the swinging rod swings in the sliding sleeve; the sliding rod is arranged below the swinging rod through a spring seat and driven by the swinging rod to move up and down in the sliding sleeve; the pushing rod is driven by the sliding rod to move up and down in the support seat; the pushing rod is fixed with two contact springs and moving permanent magnets; and the bottom of an inner cavity of the support seat is fixed with fixed permanent magnets and two fixed contact terminals provided with conducting strips. The vibroswitch device has the advantages of compact structure and convenient assembly and use, and can realize quick and accurate actions without being driven by a power supply, so that the damage of the wind mill generator due to excess vibration of a tower is avoided.

The invention discloses a preparation method of an epoxy-modified ultra-matte acrylic acid coating. The epoxy-modified ultra-matte acrylic acid coating is specifically prepared from epoxy-modified ultra-matte acrylic emulsion and color paste in proportion. The coating product provided by the invention has good storage stability, has excellent physical and mechanical properties, chemical resistance, salt spray resistance and light aging resistance after electrophoretic coating, and can pass an artificial accelerated aging test and an artificial accelerated salt spray test for thousands of hours. The coating is suitable for protecting and coating the surface of a workpiece with chemical resistance and ultralow gloss requirements.

The invention discloses composite CuNiIn powder, a preparation method and an application thereof. The composite CuNiIn powder comprises a dispersion strengthening phase and a self-lubricating phase. The preparation method comprises the following steps that ball milling and mixing on In powder, nickel-coated molybdenum disulfide powder and A12O3 dispersion strengthening Cu powder are carried out soas to prepare mixed raw materials; a spray drying granulator is adopted to carry out centrifugal atomization granulation on the mixed raw materials to prepare dried granules; and vacuum sintering iscarried out on the dried particles, and then the dried particles are crushed and screened to obtain the composite CuNiIn powder. The composite CuNiIn powder can be prepared into a composite CuNiIn coating containing the dispersion strengthening phase and the self-lubricating phase by adopting a thermal spraying method. The distribution state of the self-lubricating phase is changed, the strength and the toughness of the coating are improved, the generation of micro-cracks of the coating is effectively avoided, the self-lubricating service life of the coating is prolonged, and the composite CuNiIn powder has a good application value in the industries of aviation engines, gas turbines and the like.

The invention discloses a special-shaped three-dimensional earthquake isolation supporting base. The special-shaped three-dimensional earthquake isolation supporting base is arranged between an upper-part structure and a lower-part structure which need earthquake isolation, and comprises a bottom board, at least two special-shaped supporting base bodies, upper-part connecting corner blocks, lower-part connecting corner blocks, a horizontal supporting base and a sliding face board; the bottom board is connected with a lower-part structure; the special-shaped supporting base bodies are composedof first elastic blocks clamped by upper sealing boards and lower sealing boards in parallel with one another; the upper-part connecting corner blocks and the lower-part connecting corner blocks are provided with horizontal bottom surfaces and oblique top surfaces, and when the upper-part connecting corner blocks are arranged invertedly and the lower-part connecting corner blocks are overlaid withthe upper-part connecting corner blocks, the bottom surfaces are parallel; the horizontal supporting base is composed of a second elastic block clamped by an upper board and a lower board; after theupper-part connecting corner blocks are arranged invertedly and sequentially connected with the special-shaped supporting base bodies and the lower-part connecting corner blocks, the upper-part connecting corner blocks are fixedly supported on the bottom board in a central symmetrically distributed mode, and the sliding face board is fixed to the bottom surfaces of the upper-part connecting cornerblocks; and the horizontal supporting base is supported on the sliding face board in a mode capable of rotating round a central symmetric line, the contact surface of the horizontal supporting base and the sliding face plate adopts a friction material, and the upper board of the horizontal supporting base is connected with an upper-part structure. The special-shaped three-dimensional earthquake isolation supporting base can be synchronously isolate horizontal and vertical earthquake, and can be used for vertical earthquake isolation of buildings with comparatively large self-weight.

The invention provides an insulating rubber tape and a preparation method thereof. The insulating rubber tape comprises a substrate, a first dielectric layer and a second dielectric layer which are stacked sequentially, wherein the first dielectric layer has a negative dielectric constant, the second dielectric layer has a positive dielectric constant, and the absolute value of the dielectric constant of the first dielectric layer is larger than the dielectric constant of the second dielectric layer. The preparation method of the insulating rubber tape comprises the following steps: firstly, components of the first dielectric layer are melted, mixed and calendered on the substrate for semi-curing, then components of the second dielectric layer are melted, mixed and calendered on the firstdielectric layer, and the insulating rubber tape is obtained. The insulating rubber tape has higher dielectric constant, penetration resistance strength and volume resistivity and lower dielectric loss and is particularly applicable to protection of high-voltage alternating-current circuits.

The internal lining comprises: inner side wall, outer side wall. The inner side wall is connected to the outer side wall through a shielding plate; the upper edge of the outer side wall is connected to a flange; the edge of side wall is connected to an extended part; said extended part comprises the part extending to upper direction of the outer side wall, the lower edge of the outer side wall, and the lower edge of the inner side wall.

The invention discloses an anti-static cable sheath material. The anti-static cable sheath material is composed of, by weight, 2-4 parts of erucyl amide, 570-600 parts of polyvinyl chloride, 17-20 parts of fulvic acid, 0.06-0.1 part of sodium iodide, 40-50 parts of isopropyl alcohol, 70-100 parts of saponite, 2-3 parts of sp80, 20-30 parts of lactide, 0.2-0.25 part of L-arginine, 4-6 parts of polyving akohol, 1.6-2 parts of salicylanilide, 3-5 parts of sodium potassium silicate, 2-4 parts of 3-phenoxy-1-propanol, 10-18 parts of cresyl diphenyl phosphate and 2-4 parts of calcium palmitate. According to the cable sheath material, the components such as the erucyl amide and the salicylanilide are added, good anti-static property is achieved, the anti-static cable sheath material is suitable for protection of wires of electronic products such as household appliances and instruments, and the safety is high.

The invention discloses an explosion-proof wiring device comprising a base and an upper cover. A wiring cavity is formed between the base and the upper cover. At least one threading pipe is fixed on the side of the base. The wiring cavity is internally provided with a wiring part. Each threading pipe includes a lead cylinder, a different-diameter through hole is arranged in the axis of the lead cylinder, one end of the different-diameter through hole is provided with internal threads, a sealing pad is embedded in the different-diameter through hole, a compression nut in threaded connection with an internal threaded hole is arranged in the internal threaded hole, the lead cylinder is further provided with external threads, a locking bolt is arranged on the external threads, and a bulge is arranged on the lead cylinder. The wiring part comprises a wiring part seat and at least one wiring plate, and each wiring plate includes a conducting plate on which at least two threading openings and at least one compression bolt are arranged. The explosion-proof wiring device has a simple structure, is applicable to explosion-proof connection of cables within a certain range of wire diameter, and has the characteristics of good sealing and flameproof performances, high cable wiring head connection speed and high wire connector connection stability.

The invention discloses a method for reducing volatilization of a paint film pigment under a high temperature vacuum environment, which is to plate an oxide ceramic coating on the surface of a prepared pigment paint film. The specific process steps are as follows: step I, preparation of the pigment paint film: mixing a pigment with an organic silicon coating, and forming a paint film on the surface of a polyimide film in the screen printing manner; and step II, preparation of the oxide ceramic coating through plating: preparing the oxide ceramic coating on the surface of the paint film prepared in the step I, with adoption of the magnetron sputtering method. Through plating the oxide ceramic coating on the surface of the paint film, the volatilization of the paint film pigment under the high temperature vacuum environment can be obviously reduced, and the application of the paint film pigment is developed.

The invention discloses a thermal sensitive ceramic material which comprises the following components in parts by mole: 86.2-87.2 parts of BaCO3, 3.5-4.5 parts of SrCO3, 3.8-4.8 parts of PbO, 5.5-6.5 parts of CaCO3, 101-101.5 parts of TiO2, 0.1-0.15 parts of Y2O3, 0.03-0.04 part of Sb2O3, 0.06-0.08 part of Mn(NO3)2 as well as a sintered liquid phase additive. The invention also discloses a high-voltage-resistant PTC (positive temperature coefficient) thermistor prepared by using the thermal sensitive ceramic material and a preparation method of the PTC thermistor. The method comprises the following steps: mixing the components according to the designed ratio, ball milling by a wet method, pre-sintering, ball milling by a secondary wet method, pelleting and tabletting, sintering and post processing, thereby preparing the PTC thermistor. Through various tests, the PTC thermistor can resist a 10/700 mu S lightening stroke wave of 4kV, and can be applied to systems such as large instruments, devices, electric power.

The invention discloses an anti-explosion junction device good for preventing electrified wrong opening. The anti-explosion junction device good for preventing electrified wrong opening comprises a base and an upper cover, wherein the base is also provided with a conduit; a wiring part is also arranged in a wiring cavity; the wiring part comprises a wire incoming side, a wire outgoing side and a conducting strip; contacts are arranged on both the wire incoming side and the wire outgoing side; a guide rod and a screw rod are fixed on the upper cover; the conducting strip comprises an insulating base body and a metal strip; the screw rod is also provided with a locking nut; a sealing ring is also arranged between the locking nut and the upper cover; the conduit comprises a wire leading barrel, a differential-diameter through hole in the wire leading barrel, an inner screw thread arranged on one end of the differential-diameter through hole, a sealing pad, a compressing nut, and through holes on both the sealing pad and the compressing nut; the wire leading barrel is also provided with an outer screw thread; a locking bolt is arranged on the outer screw thread; the wire leading barrel is also provided with a bump for protruding with respect to the outer wall. The anti-explosion junction device good for preventing electrified wrong opening has good anti-explosion performance, fast connecting speed of cable joints and good connection stability of the wire joints, and is suitable for anti-explosion connection of cables within a certain wire diameter range.

The invention relates to phosphate-modified waterborne epoxy ester resin and an anti-corrosive primer thereof, and preparation methods of the phosphate-modified waterborne epoxy ester resin and the anti-corrosive primer. A scheme provided by the invention comprises the phosphate-modified waterborne epoxy ester resin and the preparation method thereof. The waterborne epoxy ester anti-rust primer with excellent anti-rust performance is prepared by taking the phosphate-modified waterborne epoxy ester resin as a base material and cooperatively using a non-toxic and efficient anti-rust pigment. Compared with the prior art, epoxy resin and phosphoric acid are esterified to synthesize epoxy phosphate, then the epoxy phosphate and acrylate monomers are subjected to graft copolymerization, so the phosphate modified waterborne epoxy ester resin with excellent performance is prepared, and the salt spray resistance of the anti-rust primer is further improved.