288results about How to "Improve adhesion fastness" patented technology

The present invention provides a plate core of solar plate heat collector and a metallic-membrane plating method of collecting plate selectively absorbing film, the plate core is welded by a copper foil heat collecting plate and a copper fluid medium arranged on the reverse of the heat collecting plate, an absorbing film is arranged on the front of the heat collecting plate, the absorbing film TiNxOy is a selective absorbing film. The absorbing film has a reasonable structure, better heat exchanging effect and high absorptivity etc. The metallic-membrane plating method adopts direct double targets vacuum sputter coater, using copper foil as basic material, titanium target as cathode, treating the front of the copper foil heat collecting plate in turns; drying the copper foil heat collecting plate; dried copper foil heat collecting plate is placed in the film coating room being vacuumized; the method adopts Ar bombarding the front of the copper foil heat collecting plate, processing twice cleaning; connecting DC to titanium target, inflating N2, O2 at the same time, TiNxOy selectively absorbing film is formed after reaction. The method has an advanced process, even cladding material, an even plane and high absorptivity and low emissivity, the heat collecting plate and the selectively absorbing film are agglutinated powerfully.

The embodiment of the invention provides a method for preparing a resin for UV photocuring ink, comprising the following steps of preparing polyester polyol by adding phthalandione, isophthalicacid, sebacylicacid and dineopentyl alcohol into anchoic acid and 1,6-hexanediol after primary lipidation, performing secondary lipidation and polycondensation reaction to obtain the polycondensation product polyester polyol; mixing epoxy resin containing hydroxyl, isocyanate and the obtained polyester polyol for mixed reaction to prepare epoxy modified polyurethane prepolymers; mixing the obtained epoxy modified polyurethane prepolymers with acrylate monomer containing hydroxyl for reaction, adding UV initiator and inhibitor for reaction to prepare epoxy modified urethane acrylate with the molecular weight of 5000-10000 and viscosity of 4000-6000mpa.s, namely the resin for UV photocuring ink. The resin prepared by the method has good performance, and the adhesion and heat resistance of the ink products are improved. The step that the traditional photocuring resin needs to be added with polyfunctional reactive diluent with more toxicity is omitted, thus being more environment-friendly.

The invention discloses UV-LED ink-jet printing character ink and a preparation method thereof. The ink is prepared from the following raw materials in percent by weight: 5-18% of modified epoxy resin, 4-8% of dispersion resin, 0.1-2% of a latent curing agent, 55-70% of a monomer, 8-15% of titanium dioxide, 6-8% of an initiator, 0.1-5% of an adhesion promoter and 0.1-5% of an assistant. The ink is suitable for UV lamp curing, is especially suitable for UV-LED lamps of which the wavelengths are 365nm and 395nm, and has the characteristics of low viscosity, good adhesive force, high temperature resistance, yellowing resistance and good hardness.

The present invention relates to the preparation of conductive fabric and is especially plasma treatment process of conductive fabric with coated conducting metal layer on the surface and thus electrothermal, antistatic, electromagnetic shielding and other functions. The process includes the steps of: defatting and decontaminating substrate materail, electrochemical activating, metallizing and surface treatment as well as characterized low temperature plasma treatment step before the electrochemical activating step to etch the surface of fabric fiber at the conditions of 20-400 W power and 1-100 Pa air pressure and for 40 min. The said etching effect on the surface of fabric raise the fastness of metal layer on the fabric.

The invention relates to a hot-melt adhesive for the bonding layer of artificial leather and a preparation method as well as application thereof. The preparation method comprises the following steps of: firstly reacting low polymer polyalcohol, an expoxy resin and aromatic polyhydroxy special polyether with diisocyanate, then adding a hydrophilic chain extender and a micromolecule polyalcohol chain extender for carrying out chain extension reaction to obtain an intermediate product, neutralizing by using organic amine, emulsifying by using water to generate a polyurethane emulsion, finally removing an organic solvent at a reduced pressure to obtain a waterborne polyurethane emulsion, adding a special organic silicon surface active agent, a FeCl3 aqueous solution, a waterborne curing agent, natural rubber, chloroprene rubber, nitrile butadiene rubber and a thickening agent, and preparing the hot-melt adhesive for the bonding layer of artificial leather. The bonding layer of artificial leather is used for compositing spinning fabrics and PVC (Polyvinyl Chloride)/cloth in the fields of bags, suitcases and clothing. The prepared adhesive has the excellent performances of firm bonding strength, water resistance, acid resistance, alkali resistance and the like and is applied to the artificial leather fields of clothing, bags, suitcases and the like.

The invention relates to environment-friendly, acid-resistant, base-resistant and steaming-resistant ink. The ink comprises a component A, namely ink, and a component B, namely a crosslinking agent, wherein the composition and the weight ratio of the component A and the component B are as follows: the component A comprises 64.5-78.5 parts of aqueous polyurethane emulsion, 8 parts of organic pigment, 3-10 parts of nano-sized aluminum oxide, 8.5-20.5 parts of isopropanol, 0.4 parts of dispersing agent and 0.3 parts of antifoaming agent; and the weight of the component B is 3-5 percent of that of the component A. The preparation method is simple; a single aqueous resin is used as an ink bonding material; the comprehensive performance of the ink, such as water resistance, high temperature resistance and bonding firmness, is improved by adding the nano-sized aluminum oxide for the first time, and the color fixing effect can be achieved; the types of raw materials are reduced; the price is low; and the environment-friendly, strong acid-resistant, strong base-resistant and steaming-resistant ink is applicable to flexible packaging materials which are resistant to steaming sterilization for a long time.

The invention discloses waterborne polyurethane emulsion for making a waterproof strip. The emulsion comprises waterborne polyurethane and water according to the mass ratio of 0.5-0.9 to 1, wherein the waterborne polyurethane comprises the following components in percentage by weight: (a) 8-50% of diisocyanate, (b) 25-80% of polyhydric alcohol, (c) 0-10% of non-hydrophilic chain extender, (d) 0.5-15% of hydrophilic chain extender, and (e) 0-8% of active hydrogen-containing chain extender; the total weight percentage of the components is 100%; and the molar ratio of isocyanate group NCO to hydroxyl group OH in the components of the waterborne polyurethane is 2-5 to 1. The waterborne polyurethane emulsion does not contain or only contains a very small amount of volatile organic solvent, has the solid content of 25-50%, is lower in viscosity and can be used for making the waterproof strip after high-speed film coating and curing; and the waterproof strip has the characteristics of high bonding degree, high strength, soft bonding part, good waterproof and moisture-permeable performance and the like.

The invention relates to a preparation method of water-based UV ink (ultraviolet) of unsaturated polyester polyurethane segmented copolymer. The preparation method includes the steps as follows; dihydric alcohol, maleic anhydride and phthalic anhydride are adopted to generate unsaturated polyester oligomer of hydroxyl end group by progressive polycondensation; after progressive addition polymerization with reactive diluent as the solvent, the unsaturated oligomer, polyethylene glycol ether and diisocyanate are subjected to chain extension with water functional monomer to generate unsaturatedpolyester polyurethane segmented prepolymer solution of isocyanate end group and with hydrophilic function; and after the prepolymer is end-sealed with methacrylic acid-beta hydroxyethyl, monoethanolamine is taken as neutralizer that is dispersed in water while stirred to obtain water-based joining material of unsaturated polyester polyurethane segmented prepolymer. The water-based joining material and the pigment filler, the photosensitizer and the assistant are formulated to prepare water-based UV ink of unsaturated polyester polyurethane segmented prepolymer.

The invention discloses a water-based ultraviolet-curing printing ink and a preparation method thereof. The printing ink comprises the following raw materials by weight: 20-30 parts of epoxy acrylic resin, 10-15 parts of polyurethane acrylic resin, 5-10 parts of polyester acrylic resin, 4-6 parts of diphenyl ketone, 2-4 parts of 2,2-diethoxyacetophenone, 10-15 parts of pigments, 2-3 parts of isopropanolamine, 8-12 parts of pentaerythritol triacrylate, 15-20 parts of diacrylic acid-1,6-hexylene glycol ester, 3-5 parts of propylene glycol ethyl ether, 1-2 parts of a fluorocarbon surfactant FC-4430, 0.5-1 part of a defoamer BYK-019, 3-5 parts of a compound filler and 20-25 parts of de-ionized water. The water-based printing ink is excellent in performance, can be instantly cured after being irradiated by ultraviolet rays, is free from evaporation of a petroleum solvent, cannot pollute the environmental and is safe to use; the printing ink can be still kept stable in performance and cannot be mildewed after being stored in the printing process and even an ink fountain for a long term; a printed product is good in color stability and high in brightness, and an ink layer is higher in friction resistance, chemical resistance and adhesiveness; the printing ink has a wide application prospect.

The invention relates to a making method of fluorine-containing fabric finishing agent with friendly environment type of water-based polyurethane grafting for water resistance dressing fabric mainly, which is characterized by the following: reacting diisocyanate and diatomic alcohol compound to form prepolymer with -NCO end-group; capping with hydroxyl allyl propionate after reacting hydrophilic monomer and glycol with fluorine and 1, 4 butanediol to extend chain; adding deionized water to stir after adjusting pH to neutral with amine to produce PUA pre-emulsion; grafting copolymerization with fluorine-containing acrylate to be the finishing agent. The invention improves high adhesive strength with bonded fabric with mellow hand and waterproof ventilating moisture permeating, which is an ideal fabric finishing material without unwanted volatile solvent during process of roller coating and dip-coating and curing, fits the environment-protecting technical requirement of fabric with the waterproof ventilating moisture permeating absolutely.

The invention discloses a method for preparing resin for latently-curable polyurethane ink. The method for preparing the resin comprises the following steps of: preparing polyesterglycol: adding adipic acid, terephthalic acid, 1,3-butanediol and 1,2-propylene glycol into a polyester synthesis kettle, heating the mixture to 200 to 240 DEG C to perform esterification for 5 to 6 hours and generatinglow vacuum, high vacuum and long vacuum in the polyester synthesis kettle to obtain the polyesterglycol by polycondensation; preparing prepolymers: performing a reaction of the prepared polyesterglycol and diisocyanate to obtain a product, of which the isocyanic acid group content is 3 to 4 percent and which is the prepolymer; preparing the resin A: adding an organic solvent into the prepared prepolymer, uniformly stirring, adding the mixture into a polyamine chain extender and an organic solvent to perform an reaction for 2 to 3 hours at the temperature of between 70 and 80 DEG C to obtain the resin A; and mixing: mixing the prepared resin A and the latent-curing agent, stirring the mixture for 0.5 to 1 hour to obtain the resin for the latently-curable polyurethane ink. The resin has theadvantages of good ink-preparing performance and high temperature resistance.

The invention discloses a preparation method of pomegranate-shaped organic-inorganic nano-composite microspheres, which comprises the following steps: mixing an aqueous dispersion solution of silicon dioxide modified by proper amount of double-bond silane coupling agent in a coupling method with a phenylpropyl monomer, anionic emulsifier, non-anionic emulsifier and water, and stirring simply, so that a milky emulsified liquid is obtained; adding initiator to perform emulsion polymerization in the presence of silicon dioxide, so that the pomegranate-shaped organic-inorganic nano-composite microspheres with multiple silicon dioxide particles wrapped in phenylpropyl emulsion particles are obtained finally and are stably dispersed in the emulsified liquid. The preparation method has the advantages that the sources of the raw materials are extensive, the raw materials are easy to obtain, the preparation process is simple, and moreover, in the prepared pomegranate-shaped organic-inorganic nano-composite microspheres, the wrapping rate of silicon dioxide is high, the structure is neat and the placement stability is good. The adhesion property and the film forming performance of the composite microsphere particles are adjustable, the adhesive force and the transparency of the corresponding glue film are good, and the organic-inorganic nano-composite microspheres can be applied to the fields of coating, textile, rubber, plastics, biology, medicine and the like.

The invention discloses a printed circuit board and a manufacturing method of the printed circuit board. The printed circuit board comprises a substrate and is characterized in that at least one surface of the substrate is provided with two or more layers of conductive circuits which are overlaid vertically and arranged in a cross mode, an insulation material layer is arranged between every two vertically adjacent layers of conductive circuits, and the conductive circuits are isolated through the insulation material layers. According to the printed circuit board, conductive ink is adopted as conductive material for manufacturing the conductive circuits, and the multiple layers of conductive circuits arranged on the substrate in an overlaid mode are isolated through the insulation material layers, so that the layer number of the conductive circuits of the printed circuit board is increased, a laminated insulation hard board is not needed, the thickness of the printed circuit board is greatly reduced, and the printed circuit board is more adaptive to miniaturization electronic devices.

The invention discloses a printable transfer film which comprises a transfer carrier film (1), a release layer (2) and a thermal welding layer (5). The printable transfer film also comprises a printable layer (6). The transfer carrier film (1) is totally covered with the release layer (2) which is totally covered with the thermal welding layer (5). The thermal welding layer (5) is totally covered with the printable layer (6). A background layer (4) is clipped between the printable layer (6) and the thermal welding layer (5) and is characterized in that the printable layer (6) and the background layer (4) can be integrated into one through changing the resin polarity of the background layer (4) and adding printable auxiliary agent.

The invention discloses a method for preparing fluorine-containing waterproof and oil-proof agent through emulsifier-free emulsion polymerization. The fluorine-containing polyacrylate fabric waterproof and oil-proof agent is prepared by taking thiocarbonate active end group-containing fluorine-containing amphiphilic block copolymer as an emulsifier. Compared with a micromolecular emulsifier, the fluorine-containing polyacrylate emulsifier-free emulsion prepared by adopting the amphiphilic block copolymers not only has high stability and high solid content, but also has excellent waterproof and oil-proof properties. Meanwhile, an organic solvent is not used in the method, so that the harm of the organic solvent on human health and environments can be avoided. In addition, a crosslinked monomer is selected to improve the washability, and enables the polymer to have reactive hydroxyl group which can be crosslinked with a reaction group on fiber or be self-crosslinked, so that the adhesion degree of a finishing agent on the fiber can be enhanced, and the washability can be improved.

The invention relates to a preparation method of environmentally friendly printing ink polyurethane coupling agent. The invention is characterized in that vulcabond and polyester polyol are used to generate performed polymer with -NCO end group, then dimethylolpropionic acid and 1,4-butanediol are used to operate the chain extension reaction, finally, spasmolytol is used to adjust the pH value toneutrality, ethanol is added into the spasmolytol to be agitated, and then the printing ink polyurethane coupling agent is attained. The agglutination fastness of the coupling agent is strong, and thebinding strength of the printing ink and printing backing material can be obviously promoted. The invention has the advantages that no harmful solvent exists in the processing process. The inventionfully accords with the environmentally friendly technical requirements of chemical engineering accessory ingredient.

The invention discloses a preparation method of a high-adsorption supported photocatalyst. The method comprises the following steps: 1, respectively weighing a photocatalyst raw material, a curing agent, a film forming agent and a dispersant, adding the raw material, the curing agent, the film forming agent and the dispersant into a film forming assistant, mixing and dissolving, and carrying out ultrasonic dispersion to obtain a photocatalysis powder suspension liquid; 2, immersing a supporting carrier in the photocatalysis powder suspension liquid, carrying out ultrasonic dispersion, and standing; 3, carrying out film forming drying on the supporting carrier obtained in step 2 at 80-120DEG C; and 4, sintering the film forming dried supporting carrier at 200-800DEG C for 2-8h, and naturally cooling the supporting carrier to obtain the high-adsorption supported photocatalyst. The high-adsorption supported photocatalyst prepared in the invention has the advantages of uniform dispersion, good photocatalytic activity, extremely good adhesiveness and super strong adsorption effect.

The invention provides a method for printing words on the surface of a cable with a fluoroplastic sheath, which comprises the following steps: performing water-cooling sizing after extruding the fluoroplastic sheath of the cable; performing surface drying; and printing words on the surface of the fluoroplastic sheath by adopting a type wheel. During water-cooling sizing, a heating device is adopted to maintain the water temperature about 130 DEG C under the pressure of 0.2MPa; after the surface of the fluoroplastic sheath is dried, the surface thereof is treated; a plasma flamethrower ionizes the air to generate a high-concentration plasma source, and plasmas are sprayed through compressed air to treat the surface of the fluoroplastic sheath, so that the surface is roughened; the arc type wheel is used to print words on the surface of the fluoroplastic sheath; and another plasma flamethrower dries the printed words. The method for printing the words on the surface of the cable with the fluoroplastic sheath can obviously improve the adhesion firmness of the printed words, so that the printed words have good scuff resistance and are difficult to erase, and the cable is convenient to lay and use.