264 results about "Double coating" patented technology

The invention provides an electrode for electrolysis, a preparation method of the electrode and an electrolytic bath. The electrode for electrolysis comprises a conductive base material and an active coating, wherein the conductive base material is a base material containing titanium or titanium alloy; the active coating at least comprises a bottom coating layer and a surface coating layer; the bottom coating layer is prepared from titanic oxide, iridium oxide and ruthenium oxide; the surface coating layer is prepared from iridium oxide, ruthenium oxide, titanium oxide and a metal or an oxide of one of two of palladium and platinum. According to the electrode for electrolysis disclosed by the invention, the double coating layers are adopted; compared with the single coating layer only containing ruthenium, iridium and titanium, the electrode is better in activity, the chlorine evolution potential of the electrode is low, the oxygen evolution potential is high, the service life of the electrode is longer, and the electrolysis stability is better.

The invention discloses inner paint of a metal beverage food can, a preparation method and an application thereof. The paint comprises the following components by mass: 35-70% of saturated polyester, 1-15% of amino resin, 3-20% of phenolic resin, and 1.8-2.5% of an additive. The components are mixed to obtain the paint provided by the invention. The paint has the following advantages that: no toxic monomer is contained; a coating prepared by the paint can resist high-temperature sterilization and acid boiling, has very good flexibility, thus can be used as an inner coating of easy-drawing lids, an inner coating of two-sheet deep drawing food cans, and an inner wall coating of three-sheet beverage cans, is suitable for storage of carbonated beverages, beer, sardine, pork luncheon meat, tomato sauce, and the like; the paint realizes a single coating weight of up to 13 g/m2, can replace double coating process by epoxy primer and organosol finish in a sheet coating mode, does not turn white during boiling, has excellent adhesive force, and cause no feather film.

The invention discloses a surface-modified lithium cobaltate material and a preparation method thereof. The lithium cobaltate material comprises a core particle and a surface-modified layer coating the core particle, wherein the core particle is a lithium cobaltate-based positive material with a structural formula as follows: LixCo(1-y)MyO2, wherein x is greater than 1 and not greater than 1.2, y is not less than 0 and not greater than 0.1, M is a doping element; the surface-modified layer comprises a Li<+1> conducting layer and an electrolyte isolating layer; the core particle is coated by the Li<+1> conducting layer and the electrolyte isolating layer in sequence. According to the invention, by sufficiently utilizing dynamic characteristic that different substances react with residual Li salt on the surface of the lithium cobaltate, and characteristic of final reaction product performance, the lithium cobaltate material with double coating layers is prepared. The material is high in comprehensive performances, has high discharge capacity, high cycling stability and the like. The preparation method disclosed by the invention is simple in process and easily realizes industrial production.

The invention discloses a water holding slow-controlled releasing fertilizer and a preparation method thereof, belonging to the technical field of agricultural fertilizers and preparation thereof. Macromolecule coating fertilizer is taken as an inner core and a water holding layer is taken as an outside layer to form a double-coating water holding slow-controlled releasing fertilizer; an inner coating is macromolecule protective layer coating material with nutrition controlling and releasing property; an outside coating is the water holding layer with excellent water holding property. Water retention agent suspension liquid is sprayed to the surface of macromolecule coating fertilizer grains for outside coating; wherein the water retention agent is prepared by taking cyclohexane, emulsifier, acrylic acid, acrylamide, sodium hydroxide, cross linker and evocating agent and adopting the method of opposite phase suspension polymerization. The fertilizer has the function of controlled releasing, drought resistance, water saving, water holding and soil improving and the advantages of high absorption percentage, wear resistance, difficult falling and the like; utilization ratio of liquid manure is improved and the fertilizer can be widely used to desert control, lawn plant, soil improvement, gardening, agriculture and forestry and the like.

The invention relates to the compound fertilizer field, and particularly relates to a high-quality strawberry planting dedicated slow-release compound fertilizer. The fertilizer is prepared from the following raw materials in parts by weight: 10-15 parts of a 1250-2000 mesh diatomite, 4-5 parts of borax, 2-3 parts of ammonium molybdate heptahydrate, 10-12 parts of sodium humate, 20-25 parts of urea, 18-22 parts of potassium nitrate, 25-28 parts of organic compost, 2-4 parts of fish meal, 1-3 parts of sesame leaves, 8-10 parts of alfalfa meal, 15-18 parts of corn distiller grains, 2-4 parts of brine, 8-10 parts of an erythromycin fungi residue, 1-2 parts of an EM microbial agent, 4-6 parts of a fern root residue, 1-3 parts of nano silver, 1-2 parts of a semen ginkgo powder, 4-6 parts of 1,6-hexanediol diacrylate, 10-12 parts of an acrylic resin dispersion liquid, 1-2 parts of isocyanate, 1-2 parts of calcium stearoyl lactate, 2-4 parts of zinc gluconate, 6-8 parts of table vinegar, and 4-5 parts of an auxiliary agent. The compound fertilizer has multiple nutrients, is low in production cost and good in slow-release effect, allows double coating to be formed on the nutrients by utilizing diatomite and a coating agent in the process, also contains various trace elements, has no toxicity and no pollution, and is excellent in quality of planted strawberry and obvious in yield and income increasing effects.

An optical fiber includes an optical waveguide, a first coating layer disposed to surround the optical waveguide and a second coating layer disposed to surround the first coating layer, wherein the first coating layer is formed by a cured polymeric material obtained by curing a radiation curable composition including at least one (meth)acrylate monomer esterified with at least one branched alcohol having from 9 to 12 carbon atoms, and the second coating layer is formed by a cured polymeric material obtained by curing a radiation curable (meth)acrylate composition including from 0.8% to 1.5% by weight of silica, based on the total weight of the composition.

A flake pigment preferably usable in a powder paint, supplying a film with excellent metallicity and high brightness and further providing excellent secondary adhesiveness is provided. The flake pigment comprises base particles composed of flake particles and a single-layer or double-layer coat covering the surface of each base particle, and at least one layer of the said single-layer or double-layer coat is made of a resin composition containing a copolymer comprising a bond unit arising from a fluoric polymerizable monomer having alkyl fluoride groups and a bond unit arising from a polymerizable monomer having phosphate groups.

The invention relates to high-whiteness coated paper coated by using raw paper with medium whiteness, a coating method and a coating. The coating method is mainly characterized by greatly reducing the whiteness of the raw paper for producing conventional high-grade coated paper such as copper plate paper and coated white cardboards. The coating mode is a common single-side or double-side two-layer (double-coating) or multi-layer coating mode in a papermaking plant. By using the mechanical property of the raw paper, the printing property of coatings and the synergetic whitening effect between the coatings, yellowing of the raw paper is inhibited, and the whiteness of the coated paper is improved to over 86 percent so as to meet the requirements of national standards on the high-grade copper plate paper. The raw paper of the high-grade coated paper can be made by using various kinds of environment-friendly and resource-saving pulp of medium whiteness more widely, and is favorable for promoting the development of the low-carbon manufacturing technology of the pulping papermaking industry. The newly invented coated paper can substitute the traditional high-grade paper such as the copper plate paper, the coated white cardboards and the like in the fields of printing and packing.

The invention discloses a double-coating large-mode-area photon crystal flysecond laser directly obtaining micro joule-level single pulse energy, belonging to the field of laser technique and nonlinear optics, where the laser main body is based on double-coating large-mode-area photon crystal optical fiber of polarization-protection structure and adopts high-power LD laser to directly pump; the laser uses grating pair to compensate dispersion, starts mode locking with the help of semiconductor saturable absorber mirror (SESAM), and controls polarization by wave plate and polarization beam splitter and implements tunable output; laser resonant cavity keeps net positive dispersion inside and runs in self-similar mode locking mode and outside-cavity dispersion compensation is made on the output pulse and the pulse is 100-200fs wide. And the advantages: the laser has good stability, and the output pulse has high energy and high repeating frequency. And the invention can effectively avoid split of pulse running at high energy.

A surface-treated cathode active material useful for manufacturing a lithium secondary battery have excellent output characteristics by performing a double coating with metal oxide and an electron and ion conductive polymerized copolymer on a surface of a cathode active material for a lithium secondary battery to enhance electrochemical properties and thermal stability of the cathode active material.

The invention relates to processing technique for ornament material and building laminated fine wood board. It adjusts the glue and applies to the gluing machine, sending the wood chip to double coating machine then to the working platform and cold press on the cold forging machine. Putting the laminated wood board on the hot press, it forms into the blank made of wood chip and wooden jobbing sheet. It cut off its irregular parts, sanding both surface smooth, then coating the plate blank for double faces coating, spreading bottom and surface plates on the working platform, then cold and hot pressing, trimming and sanding to get the laminated wood board. The laminated wood board is moisture proof, water proof, durable and good in stability.

A double-coating gel-coated sand-preventing particle and a preparation method thereof are disclosed. In order to overcome the disadvantages that sand prevention effect cannot be realized when a conventional resin solution, a sand solidifying agent and other solution type sand-preventing products, and plastic pre-coated sand and other artificial well-wall sand-preventing products are used in an oil well with a relatively low well temperature. The double-coating gel-coated sand-preventing particle comprises an A type particle and a B type particle, and the A type particle and the B type particle are mixed according to the weight ratio of 1:1 for usage in on-site sand-preventing operation. The A type particle is formed by successively coating a quartz sand/ceramsite matrix with a resin coating membrane and an outer isolating agent. The B type particle is formed by successively coating a quartz sand/ceramsite with an epoxy resin curing agent coating membrane and an outer isolating agent. The particle size of quartz sand/ ceramsite is 0.4-0.8 mm or 0.6-1.1 mm. The beneficial effects comprise that the double-coating gel-coated sand-preventing particle can be slowly dissolved in a water environment, prevents advanced cementation solidification, and satisfies sand-preventing construction requirements on oil, gas and water injection wells with a low temperature (<=30 DEG C) during oil gas exploitation, and the technology is simple, easy to control, safe and reliable.

The invention relates to an industrial paint which is used for manufacturing metal water-borne heavy-duty anticorrosion base coating and top coating capable of being matched to form systems after hybrid and polymerization of silane, doping-polyaniline and conductive polyaniline. As no organic solvent is used, the manufactured metal water-borne anticorrosion base coating and the manufactured metal water-borne anticorrosion top coating are non-solvent metal anticorrosion heavy-duty industrial paints which are used on the surfaces of metal bases, contain very little VOC (organic volatile) and are friendly to the environment. The theories that common sacrificial anticorrosion paint protects cathodes of metal surfaces and polyaniline protects the anodes of metal surfaces are comprehensively used, so that the metal water-borne heavy-duty anticorrosion coating made by the hybrid and polymerization of silane and polyaniline has very excellent double-coating anticorrosion property on metal surfaces. By adopting the industrial paint, application of double-coating systems having excellent anticorrosion and substitution for metal anticorrosion three-coating systems which are traditional and used at present become feasible.

The invention relates to pre-coating adhesive used for heat cure bonding and a preparation method thereof, belonging to adhesive and a preparation method thereof and solving the problems of poor heat resisting property and poor ablation resistance of the prior adhesive and the problems of poor bonding stability and low reliability of the prior adhesive. The pre-coating adhesive is made from matrix resin, filmerformer, coupling agent, filling agent and solvent. The preparation method comprises the following steps: firstly, weighting raw materials; secondly, respectively stirring and dissolving the raw materials in a dissolution reactor; thirdly, putting the raw materials in a mixing reactor for mixing uniformly; fourthly, dispersing the mixed raw materials by a high-speed shear dispersion machine and grinding the mixed raw materials by a colloid. The pre-coating adhesive has better heat resisting property and excellent ablation resistance, not only can be used as single-coating adhesive adhering with metal or composite material and rubber in a hot cure way, but also can be used as double-coating adhesive adhering with the metal or composite material and rubber in a hot cure way, has high adhering strength and stable and reliable adhering property, and can be applied to munitions industry, constructional engineering, and the like.

The invention belongs to the technical field of preparation of cathode materials for lithium-ion batteries and specifically provides a double-layer coated cathode material LiNi0.6Co0.2Mn0.2O2 for a lithium-ion battery, wherein the coating amounts of Li3VO4 and PPy are 1 to 5 weight percent; Li3VO4 is a lithium fast ion conductor; by coating Li3VO 4, a protective layer can be provided and the lithium fast ion conductor also can be provided, so that ionic conductivity of the material is enhanced; in addition, lithium ions consumed during the formation of SEI and CEI films are made up and the cycle performance of the material is improved. The PPy is a fast electronic conductive material; by coating PPy, a second protective layer can be provided and the electronic conductivity of the materialcan be improved. Through double-layer coating of Li3VO4 and the PPy, the ionic conductivity is improved and the electrical conductivity is also improved; the cathode material is enabled to have super-high magnification discharge performance and higher discharge specific capacity; besides, double coating layers can more effectively inhibit the erosion effect of HF on the cathode material and enablethe cathode material to have excellent high voltage cycle stability.

The invention relates to a powder coating used for heavy-duty corrosion-resistant high-bounding stress double-coating thin layer steel bar. The powder coating comprises a heavy-duty anticorrosive undercoat and a super-toughness epoxy finishing coat; the heavy-duty anticorrosive undercoat is composed of, by weight, 650 to 850 parts of epoxy resin, 50 to 200 parts of a curing agent, 3 to 30 parts of a conducting polymer nano material, 60 to 260 parts of a pigment and filler, and 20 to 50 parts of an auxiliary agent; the super-toughness epoxy finishing coat is composed of, by weight, 650 to 850 parts of a special toughness epoxy resin, 50 to 200 parts of a curing agent, 60 to 300 parts of a pigment and filler, and 20 to 50 parts of an auxiliary agent. The powder coating is capable of delaying metal corrosion, inducing gradual repairing of oxide films, providing heavy-duty anticorrosive undercoat coating with self repair functions, providing steel bar with super corrosion resistance, increasing adhesion of steel bar finishing coat coating, providing steel bar finishing coat coating with stretch resistance, cracking resistance, and peeling resistance, and prolonging service life of steel bar.

The invention relates to the technical field of an anti-reflection film, particularly to a glass substrate containing a silica anti-reflection film and a manufacturing method of the glass substrate. The glass substrate comprises glass and a silica anti-reflection film, wherein the silica anti-reflection film has a composite structure and includes a mesoporous silica film arranged on the glass and a compact silica film arranged on the mesoporous silica film. The method comprises steps of preparation of prepolymer sol and coating sol, double coating and high-temperature calcination. The transmissivity of the glass substrate is ensured, the phenomenon that the transmissivity is reduced due to water vapor in the air adsorbed by the mesoporous silica film is prevented, and the environmental stability is improved. The manufacturing method is simple to operate, equipment is easy to achieve, and the prepared film is good in adhesive force and high in hardness.

The invention discloses a large-capacity weak grating array processing apparatus. The large-capacity weak grating array processing apparatus is characterized in that the large-capacity weak grating array processing apparatus includes a central control system, a pre-processed raw material feeding device, a bare fiber diameter monitoring device, an optical fiber processing temperature control device, an FBG writing platform, a double-coating and curing unit and an FBG winding device; the material feeding control signal output end of the center control system is connected with the control signal input end of the pre-processed raw material feeding device; the signal output end of the bare fiber diameter monitoring device is connected with the bare fiber diameter monitoring result input end of the central control system; the temperature control signal output end of the central control system is connected with the control signal input end of the optical fiber processing temperature control device; the fiber grating writing control signal output end of the center control system is connected with the control signal input end of a laser writing device; and the FBG winding control signal output end of the center control system is connected with the control signal input end of the FBG winding device. With the large-capacity weak grating array processing apparatus of the invention adopted, the multiplexing capacity of a distributed sensing system can be greatly improved.

The invention relates to a positive image thermosensitive lithographic printing plate. A resin layer and a thermosensitive layer are successively coated onto a support with hydrophilic surface, wherein the resin layer comprises alkali-soluble resin, and the thermosensitive layer comprises alkali-soluble resin and infrared absorbent. The resin layer of the positive image thermosensitive lithographic printing plate contains an acid generator and an infrared absorbent. In the invention, the acid generator and the infrared absorbent are added into the resin layer of the double-coating positive image CTP (Computer-to-Plate) plate into heat, so that the acid generator generates acid, and the exposed portion is easily dissolved or dispersed in a developing liquid and removed by the developing liquid. As long as the upper layer is removed, the lower layer is very easy to remove. Unexposed portion does not generate acid and is not easy to remove by the developing liquid, the sensitivity of the plate is increased, the development of the plate is accelerated, and the sensitive and the development latitude of the plate are also improved.

To improve a tensile strength without impairing flexibility and adhesion strength to concrete, and to form thick coating in a surface layer part for preventing a basis material from being exposed by a damage of the coating, a method of forming double coatings on a prestressing strand includes a primary painting process after a pre-treatment process, in which a resin coating is formed only in the surface layer, a secondary painting process in which respectively individual state resin coating is formed on outer peripheral face of each of the core wire and the surrounding wires under a loosened and separated state, thereby forming a double coating in each surrounding wire, and a finishing process of tightening and retwisting the surrounding wires about the core wire to an original state. The obtained prestressing strand has the double coating portions only in the surface layer thereof and enough flexibility and adhesion strength to concrete.

The invention discloses a composite bright enhancement film, comprising a transparent film layer, a light collecting layer and an atomizing layer, wherein the light collecting layer, the atomizing layer and the transparent film layer are integrally arranged; the light collecting layer and the atomizing layer are integrally arranged. The composite bright enhancement film adopts a single-layer structure design, and uses a saw-tooth shaped refraction surface of the light collecting layer to enhance the bright. The light is diffracted by beads with different convex hemisphere grain sizes arranged on the atomizing layer, thereby achieving atomizing and diffusing effects. Compared with the traditional backlight module, the composite bright enhancement film can reduce more than one diffusion film, and can reduce the manufacturing steps of double coating the multi-layer diffusion films in the traditional manufacturing process, thereby greatly reducing the cost and improving the operating quality.

The invention discloses a high-performance Si@SnO2@C composite material and a preparation method and application thereof. The method comprises firstly introducing a functional group into the surface of high-capacity nano-silicon by surface modification; in-situ depositing a uniform SnO2 layer; introducing a uniform carbon layer precursor by in-situ polymerization of phenolic resin; and obtaining ahigh-performance multilayer core-shell structure composite material by high-temperature calcinations. The invention also discloses a high-performance Si@SnO2@C composite material and application thereof. The method improves the electrochemical performance of the electrode material by coating the outer side of the intermediate layer of an active material with a double coating layer according to the characteristics that a volume effect is liable to occur in the charge and discharge cycle of the lithium battery Si negative electrode material. The SnO2 layer is not limited to the use as an inertcoating medium, can also be used as a lithium storage material at a wider potential of 0.01 to 3V. The SnO2 layer also has a volume effect, and can provide a sufficient buffer space for the silicon having a significant volume effect. Such design structure is advantageous for improving the cycle performance of the silicon-based material and increasing a reversible capacity.