41results about How to "Membrane surface smooth" patented technology

The invention discloses an automobile bumper spraying process. The automobile bumper spraying process includes the specific processes of workpiece transfer, shielding, piece feeding, surface wiping, workpiece grinding, electrostatic dust removal on primer, primer spraying, primer airing, primer grinding, electrostatic dust removal on colored paint, colored paint spraying, colored paint airing, varnish spraying, varnish airing, drying, forced cooling, ornamenting and grinding, ornamenting and polishing, checkout and storage. By controlling parameters and operation of all procedures, the surface quality of a sprayed automobile bumper can be high, a film face where colored paint is sprayed is smooth, high in brightness, uniform in film face, capable of reaching the preset color and luster degree and not prone to color fading, and the product quality of the bumper can be ensured.

The invention discloses a doping dye sensitized solar cell photo anode, preparation method and application thereof, wherein the doping dye sensitized solar cell photo anode is divided into three layers in structure; the first layer is a common glass; the second layer is a SnO2 transparent conductive film doped with F; the third layer is a nanocrystalline porous composite film formed by doping the nano particle with mesoporous semiconductor at wide band with nanocrystalline semiconductor particles, wherein dyes are attached on the nanocrystalline porous composite film. The doping dye sensitized solar cell photo anode is used in doping dye sensitized solar cells. The doping dye sensitized solar cell photo anode of the invention can improve the photoelectric conversion performance of cells and increase the photoelectric conversion efficiency of solar cells well, and has the advantages of simple preparing technology, good repeatability and low cost; the doping dye sensitized solar cell photo anode not only can be used in dye sensitized solar cell materials, but also can be used in the fields of photocatalysis, gas sensitive material and the like.

The invention discloses a preparation method of a polyvinyl alcohol composite film with embedded silver-wrapped nanoparticles, comprising the following steps: (1) preparing a polyvinyl alcohol-silver nitrate solution; (2)preparing a polyvinyl alcohol-silver nitrate film by using spin coating method or casting film method; and (3) irradiating the polyvinyl alcohol-silver nitrate film with ultraviolet light. The prepared composite film has the characteristics of uniform metal nanoparticle size distribution, controllable dimension, uniform shape, and uniform dispersion.

The invention relates to the technical field of reverse osmosis composite membranes, and concretely relates to an antibacterial and pollution-resistant composite reverse osmosis membrane and a production method thereof. Silver nitrate and a stabilizer 3-aminopropyltrimethoxysilane (APS) are introduced into a membrane casting solution, the silver nitrate and DMF undergo a redox reaction in the dissolving and stirring process of a high-molecular polymer in order to form nano-silver particles, the nano-silver particles form a nano-silver stable dispersion under the action of APS, and the nano-silver stable dispersion is firmly embedded in a porous support layer to make the membrane have a certain antibacterial property; and triaminoguanidine hydrochloride (TAGH) is introduced into an aqueousphase solution, and the TAGH, m-phenylenediamine and trimesoyl chloride (TMC) undergo an interfacial polymerization reaction to form a polyamide desalting layer, so the membrane surface of the polyamide desalting layer is smooth and highly hydrophilic. The anti-adhesion property and the organic pollution resistance of the reverse osmosis membrane are greatly improved. Additionally, the "structuralfragmentation" effect of an guanidino group is used to activate water molecules, so the water permeability is enhanced, and the water flux is improved without sacrificing the salt rejection rate.

A hardening paint for internal paint is prepared from polyvinyl alcohol, fluorescent whitening agent, titanium oxide ashed calcium, urea and water. Its advantages are high film hardness, adhesion and smoothness, high resistance to acid and alkali corrosions, and low cost.

The invention discloses a quantum dot ink and an electroluminescence device. The quantum dot ink comprises quantum dots and a mixed solvent, the mixed solvent comprises a first solvent and a second solvent, the surface tension of the mixed solvent is 25-35 mN/m, and the difference value of the surface tension of the first solvent and the second solvent is within 0.5-3 mN/m. By selecting solvents different in surface tension, ink droplets can be quickly and naturally dried into a film in an atmospheric environment, film formation is even, the film face is flat, and the phenomenon of a coffee ring is effectively inhibited.

The invention discloses an amorphous PET release film as a silica gel roll protective film and a production technology of the amorphous PET release film. The amorphous PET release film comprises a PETbasic film, and a functional coating layer is arranged on one surface of the PET basic film; the functional coating layer comprises, by weight, 3-8 parts of solvent naphtha D120, 3-8 parts of solventnaphtha D30, 4-8 parts of butanone, 0.5-2 parts of isopropanol, 0.05-0.2 part of amorphous release agent, 0.18-0.45 part of methylbenzene, 0.2-0.6 part of heavy stripping additive, 0.05-0.09 part ofcrosslinking agent, 0.01 part of anchoring agent and 0.02 part of catalyst. The light transmittance of the produced amorphous PET release film is above 90%, the haze is below 3.0, and under normal temperature, release force stability is 150 g+/-20 g; through one hundred times of magnification of a magnifying lens, no visible particles or foreign matter exists, the surface of the film is flat and free of longitudinal grains, water ripples, transverse grains and obvious rainbow grains, the ageing stability is smaller than 250 g, and the residual adhesive power is larger than 85%.

The invention discloses a low-temperature cured ultra-light PET release film comprising the following components in parts by mass: 3-8 parts of 120 # solvent oil, 3-8 parts of D30 solvent oil, 5 to 12parts of ethyl acetate, 0.5 to 1.5 parts of isopropanol, 0.8 to 1.5 parts of Shin-Etsu KS-3755 silicone oil main agent, 0.001 to 0.002 part of silicon dioxide, 0.002 to 0.005 part of polyoxysilane and 0.001 to 0.0015 part of an organic platinum compound. A preparation method comprises the following process: 1) preparing a coating; 2) treating an original film; 3) carrying out precision coating; 4) drying and curing; and 5) carrying out material receiving and coiling. According to the low-temperature cured ultra-light PET release film prepared through the method, the curing temperature does not exceed 130 DEG C, and the release force is 5 g/in in 20 min; under one hundred times of the magnifying lens, no visible particles or foreign matters exist, the film surface is smooth, no longitudinal lines, water ripples, transverse lines or obvious rainbow lines exist, the 24-hour normal-temperature release force and the aging release force are close to 20 min release force, and the residual adhesion rate is larger than or equal to 75%.

The invention discloses a production process of a PET (polyethylene terephthalate) release film for coating by water used as a solvent. The production process comprises the following steps: Step 1, coating preparation: adding a silicone oil main agent, a crosslinking agent, an anchoring agent and an anti-static agent into distilled water used as the solvent in sequence, stirring at 1,200 r/m for 30 min, filtering the mixture with a filter net of 200 meshes to obtain slurry, and using the slurry within 3 hours; Step 2, original film treatment; Step 3, precision coating; Step 4, drying and curing; Step 5, receiving and winding. The slurry obtained in the step 1 is prepared from the following components in parts by mass: 35 parts of water, 0.8 to 1.2 parts of the silicone oil main agent, 0.17to 0.21 part of a crosslining agent, 0.05 part of the anchoring agent and 24 to 25 parts of the anti-static agent. According to the production process, an organic solvent is directly replaced by thewater used as the solvent, and the PET film simultaneously has the release effect and the anti-static effect through one-time coating.

The invention provides a film coating process for manufacturing a packaging container. The film coating process comprises a winding mechanism, a coating mechanism, a guide mechanism, a drying mechanism, a conveying mechanism, a main beam plate frame, a guide roller I and a guide roller II. The film coating process solves the problems that clamping and fixing of an unwinding winding drum and a winding drum have limitation at present, and winding drums with different types and sizes cannot be clamped, so that the manufacturing of the film coating process is relatively single, and production and processing of film coating processes with different sizes cannot be realized; in the winding and unwinding processes, the execution actions cannot be synchronized, the tension in the film coating process is influenced to be constant, the film transmission stress is unbalanced, and the film is wrinkled or torn; no guide motion track exists for the transmission of paper printed matters and films, the deviation condition is easily caused after the films and the paper printed matters are compounded, and the film coating quality is influenced; and the coating of an adhesive on the surfaces of the films cannot be uniformly controlled, the coating flow speed of the adhesive cannot be controlled, and the film coating process is influenced.

The invention particularly discloses a high-efficiency and low-resistance impurity particle filter system for venous transfusion, solving the problem that an existing venous transfusion filter system is unreasonable in structure design and poor in filter effect, thus causing potential safety hazards. The high-efficiency and low-resistance impurity particle filter system for venous transfusion comprises a murphy's dropper, wherein the murphy's dropper is provided with an air filter and a liquid medicine filter which are communicated with the murphy's dropper; the air filter is communicated with the right side of the upper part of the murphy's dropper, and the opening of an air inlet pipe of the air filter is downward; the liquid medicine filter is communicated with the left side of the lower part of the murphy's dropper; each of the murphy's dropper and the liquid medicine filter is internally provided with composite filter cloth which is vertically placed; the two pieces of composite filter cloth respectively divide the murphy's dropper and the liquid medicine filter from left to right; each composite filter cloth is made by bonding woven filter cloth and a polydimethylsiloxane filter membrane, and the end part of the air inlet pipe of the air filter is provided with horizontally placed composite filter cloth. The filtering effect of the venous transfusion is improved by the high-efficiency and low-resistance impurity particle filter system, and then the potential safety hazards are completely eradicated.

The invention discloses a preparation method of an alkyd resin coating capable of forming flat surfaces. The method comprises the steps as follows: polyvinyl alcohol and bamboo charcoal powder are stirred, a silane coupling agent is added, grinding is performed, agarose is added, ultrasonic treatment is performed, and a first material is obtained; fumed silica, wollastonite powder, vermiculite powder, nano talcum powder, acetic ether, the first material and water are mixed, ultrasonic treatment is performed, and a second material is obtained; phenolic aldehyde modified alkyd resin, acrylic acid modified alkyd resin, diethylene glycol methyl ether acetate, ethylene glycol, waterborne polyurethane resin, polyamide polyamine epoxy chloropropane resin and oxidized polyethylene wax are uniformly stirred, the second material, polyoxypropylene glycerol ether, hydroxyl silicone oil, sodium lauryl sulfate, a wetting agent and a preservative are added, the mixture is stirred continuously, and the alkyd resin coating capable of forming the flat surfaces is obtained. The method is simple, and the obtained coating has good base material adhesion and film compactness, is not prone to peeling offand has good heat and damp resistance and temperature change resistance.

The invention discloses an agricultural high-toughness VMCPP aluminum laminated film and a preparation method thereof. The film comprises an aluminum layer and a CPP base film layer, wherein the CPP base film layer is sequentially provided with an aluminized layer, namely a corona layer, a middle layer and a heat sealing layer from bottom to top, the thickness of the aluminum layer is in a range of 380 angstroms to 450 angstroms, the thickness ratio of the aluminized layer is in a range of 15% to 20%, the thickness of the middle layer is in a range of 50% to 70%, the thickness of the heat sealing layer is in a range of 15% to 30%, the middle layer is composed of homo-polypropylene and TPE, and the TPE accounts for 20-33 parts by weight of the middle layer. According to the agricultural high-toughness VMCPP aluminum laminated film disclosed by the invention, the TPE is added into the middle layer of the CPP base film, so that the film is excellent in comprehensive performance and long in service life.

The invention relates to agricultural machinery for mulching a plastic film on ridge culture crops. A draw hook (9) and a front bracket wheel (2) are arranged at the front end of a small-specification steel pipe bracket (1); an opener (3) is arranged at the rear of the small-specification steel pipe bracket (1); a film expansion mechanism is formed by a film bearing frame (4), a film expansion roller (5), a film pressing wheel (6) and a torsion spring (8); and finally a covering device (7) is arranged. Due to the adoption of the special film expansion mechanism, the operation can be smooth to carry out when the plastic film is mulched for the ridge culture crops such as potatoes, ridge culture peanuts and the like in a protected field, the soil is uniform to cover, the plastic film has proper tightness degree, and the film surface is flat like a mirror. The agricultural machinery for mulching the plastic film on the ridge culture crops needs small traction power and can be operated by both women and children.

The invention discloses an outdoor advertisement transfer membrane technology, and relates to the technical field of outdoor advertisement transfer membranes. The manufacturing technology mainly comprises the steps of manufacturing a PET base membrane, manufacturing a release layer, manufacturing a coloring layer, manufacturing an aluminum-coated layer and manufacturing a back glue layer. A 14-micrometer transfer membrane is adopted as the PET base membrane; the release layer is prepared from 1 kg of LX-185S, 3 kg of ethyl alcohol and 0.9 kg of water; the coloring layer is prepared from 2 kg of PET-703, 1 kg of PET-251, 1.5 kg of butanone and 0.5 kg of cyclohexanone; a vacuum coating machine is adopted to manufacture the aluminum-coated layer; the back glue layer is prepared from 2 kg of BJ-88, 0.6 kg of ethyl ester and 0.4 kg of methylbenzene. The outdoor advertisement transfer membrane technology has the advantages that the outdoor advertisement transfer membrane is excellent in glossiness, fine and smooth in membrane surface, level and good in effect; the structure is simple, the design is reasonable, and the manufacturing cost is low.