27 results about "Shellac" patented technology

The invention discloses a fuel assembly assembling method and belongs to the field of nuclear power. The method comprises the following steps: immersing the zirconium alloy pipe fitting into a shellac resin coating agent dissolved by ethanol, then taking out and drying to form a protective paint film on the surface of the zirconium alloy pipe fitting; and after the fuel assembly is assembled by pulling the rod, the fuel assembly is immersed in a release agent to remove the protective paint film. The method can effectively reduce the risk of damage to the surface coating of the zirconium alloy pipe fitting in the assembling process, and improves the service life and reliability of the fuel assembly.

In one aspect, the disclosure relates to multilayer composite films comprising a first biopolymer such as agarose, and a second biopolymer such as shellac. In the films, one or both layers may further comprise a biodegradable plasticizer. In a further aspect, the films can be flat or can be thermoformed to have a three-dimensional shape. The films are biodegradable and have very low permeability to water, gases, and other contaminants. Also disclosed are methods of making the films and consumer product packaging materials comprising the films.

This invention discloses a method for preparing printing ink for smooth, hard food surfaces, comprising the following steps: preparing a mixed solution of plant protein; mixing it with shellac in anhydrous ethanol, then adding polyol and pigment for dispersion, followed by grinding and filtration to obtain the final product. This invention enables gravure printing on the hard, smooth surfaces of food, exhibiting good adhesion, excellent ink transfer properties, clear and smooth printing, and a certain degree of water resistance. Furthermore, it controls the ink drying speed; black and white inks dry at a moderate speed to avoid cracking and peeling; color inks dry at a moderate speed to avoid clumping. It also allows for overprinting of two or more colors, and the ink has good abrasion resistance, preventing color fading during transportation after packaging.

In one aspect, the disclosure relates to multilayer composite films comprising a first biopolymer such as agarose, and a second biopolymer such as shellac. In the films, one or both layers may further comprise a biodegradable plasticizer. In a further aspect, the films can be flat or can be thermoformed to have a three-dimensional shape. The films are biodegradable and have very low permeability to water, gases, and other contaminants. Also disclosed are methods of making the films and consumer product packaging materials comprising the films.

The invention belongs to the technical field of sealants, and discloses a sealant pasting material as well as a preparation method and an application method thereof. The preparation method comprises the following steps: dissolving shellac in absolute ethyl alcohol to obtain a solution; standing the obtained solution, filtering, heating to a preset temperature, and keeping the solution in a boiling state; and in a stirring state, adding colloidal graphite into the solution in a boiling state, uniformly mixing, and stopping heating after the glue solution begins to be drawn, so as to obtain the sealant paste material, wherein the sealant coating paste material is prepared from the following components in parts by weight: 60 to 70 parts of absolute ethyl alcohol, 20 to 30 parts of shell-lac and 9 to 11 parts of colloidal graphite. According to the technical scheme disclosed by the invention, the efficiency, quality and safety of equipment assembly construction are remarkably improved.

The application discloses a shellac coating for pipeline welding and a preparation process thereof, and particularly relates to the field of materials for brazing or welding, wherein, according to proportions, the weight of the matting powder, the glutinous rice powder, the biochar powder and the ethanol is determined to prepare component A; and according to proportions, the weight of the shellac sheet and the ethanol is determined to prepare component B. By constructing a staged response structure with shellac as a matrix, combining a cross-linking gel network and a controllable chelation stripping system, the anti-rust coating has two optional response paths before welding: on the one hand, without using sodium alginate, the coating structure is stable, can directly withstand the high temperature required by welding, and rapidly gasifies above 200 degrees Celsius without leaving residues, thereby eliminating the polishing step; on the other hand, if EDTA solution is sprayed before welding, the calcium ions in the film layer can be selectively chelated, the cross-linking network is destroyed, the whole film layer is slipped or peeled off in an integral block, and the operation mode is adapted to different construction requirements.

There is provided a packaging bag in which the occurrence of blocking is prevented while achieving mono-materialization. A packaging bag includes a bag body 3 formed by overlapping inner surfaces of packaging films 2A and 2B made of a laminated film of one or a same kind of material and bonding peripheral edge portions of the films to each other by heat seal. The packaging films 2A and 2B include a base material layer that forms an outer surface of the bag body 3 and a heat seal layer that forms an inner surface of the bag body 3. The bag body 3 includes a pair of flat portions 4 facing each other and gusset portions 5 and 6 folded inward between the pair of flat portions 4. The gusset portion 6 is formed of the packaging film 2B in which a coating layer containing a resin component selected from cellulose nitrate, polyamide, shellac, epoxy, polyurethane, chlorinated polyolefin, a mixture of silicone and acrylic, or a mixture of silicone and polyamide is provided on an outer surface at least at a position corresponding to the peripheral edge portion.

The embodiments of the present application relate to the technical field of coating. Disclosed are a coating composition, a coating method for accentuating wood grain, and a coated wood. The coating composition and coating method provided in the present invention provide an effective solution to the problems in the prior art of the presentation of wood grain being unclear, and the coating having an excessively high hiding power and being prone to discoloration. Shellac or a shellac-based derivative material is selected as a film-forming agent, and is formulated with a suitable volatile carrier solution, thereby ensuring that a paint film formed by a coating on a wood surface is transparent and long-lasting, and prolonging the service life of the wood surface. By means of the detailed coating steps, it is ensured that the coating uniformly covers the wood surface and penetrates deep into fine pores of the wood, such that wood grain is more distinct, and wood grain blurring caused by coating accumulation or uneven coating penetration in conventional processes is prevented. In summary, the coating composition and coating method of the present invention achieve an ideal effect of both aesthetics and practicality.

This invention discloses a method for preparing amphoteric electrodeposition photoresist on a metal surface, specifically including the following steps: Step 1, synthesizing cashew nut shellac monomer; Step 2, preparing an amphoteric resin; Step 3, preparing an electrophoretic coating; Step 4, electrophoretically depositing photoresist on a conductive substrate. This invention also discloses the preparation method and application of amphoteric electrodeposition photoresist on a metal surface. This invention solves the problems of existing photoresists causing complex formation due to strong alkalis, corrosion of metal circuits by strong acids, and swelling of the photoresist film.

Coatings may be used to discourage agglomeration and dust formation when handling seeds. Aqueous emulsions suitable for coating seeds and other substrates may comprise an aqueous fluid, a film-forming polymer that is water-soluble or biodegradable, optionally, a plasticizer, and shellac particles dispersed in solid form in the aqueous fluid. The film-forming polymer is at least partially dissolved in the aqueous fluid. Optionally, the aqueous emulsions may comprise at least one effect pigment, and / or at least one wax, and / or one or more of at least one surfactant, at least one biocide, at least one preservative, at least one second film-forming polymer, at least one crosslinking agent, or any combination thereof.

The invention relates to the field of adhesive tapes, and provides a high-adhesion residual-adhesive-free insulating battery cell adhesive tape and a preparation method thereof.The adhesive tape sequentially comprises a transparent PET base material layer, an acrylic acid pressure-sensitive adhesive layer, a blue PET base material layer, an acrylic acid pressure-sensitive adhesive layer and a release layer from bottom to top; the acrylic pressure-sensitive adhesive layer is prepared from the following raw materials in parts by weight: 80-100 parts of polyacrylic resin, 1-4 parts of a curing agent, 10-20 parts of modified shellac resin, 4-8 parts of filler, 1-4 parts of an initiator, 0.5-3.5 parts of a coupling agent, 1-3 parts of a dispersing agent and 55-75 parts of a solvent; and the release layer is a PET release layer. The adhesive tape provided by the invention has the characteristics of high adhesion, no adhesive residue, high temperature resistance and good insulation protection effect.

The application relates to the technical field of photovoltaic glass, and discloses a coated photovoltaic glass and a preparation method thereof, wherein acrylic resin, modified nano titanium dioxide, fluorine-containing flame retardant, modified cellulose and shellac are added into a mixing device, mixed, and a coating solution is obtained; the prepared coating solution is coated on the surface of one side of a glass substrate by using a roll coating method, then low-temperature solidification is carried out to form a composite protective layer, and after the coating is completed, cleaning treatment is carried out, so that the coated photovoltaic glass is obtained. The coated photovoltaic glass has good flame retardation, impact resistance and weather resistance.

This invention relates to the field of bioprotective materials technology and discloses a composite insect-repellent and mildew-proof coating liquid. The core antibacterial and insecticidal components are a blend of clove bud essential oil, garlic essential oil, and Australian tea tree essential oil. A composite surfactant is prepared using castor oil polyoxyethylene ether, transparent hydrogenated castor oil, and ethanol, which is then emulsified to obtain a composite essential oil emulsion. This emulsion is then blended with a shellac coating liquid to obtain the coating liquid. Through the synergistic effects of essential oil blending, emulsion stabilization, and shellac film-forming slow release, this invention achieves long-lasting 100% anti-mildew efficacy against Aspergillus niger, Trichoderma viride, and Penicillium citrinum, as well as 100% contact killing effect on mealworm larvae within 2 days. It also features uniform film formation, strong adhesion, long protection period, low essential oil dosage, mild odor, green and residue-free operation, and simple and easily scalable processing. It can be widely used for long-lasting insect and mildew protection in mycelial materials, food storage, agricultural product preservation, and feed storage.

The invention relates to a clay model paint spraying method which comprises the following steps: spraying shellac paint on the surface of a clay model to obtain a clay model sprayed with shellac paint; spraying primer on the surface of the clay model sprayed with shellac paint; and spraying finish paint on the surface of the primer. The shellac varnish is sprayed on the surface of the clay model before the primer is sprayed to serve as a separation layer, the clay and the paint can be effectively isolated, components of the clay cannot be mixed with the paint, the adhesive force of the paint sprayed in the later period can be improved, and the shellac varnish, the primer and the finish paint are cured on the surface of the clay model through chemical reaction in a spraying mode, so that the coating effect is good. The durability of the paint film is better than that of a mode of pasting a colored plastic decorative film, and the technical problem that the durability of the mode of pasting the colored plastic decorative film is poor in the prior art is solved.

The utility model relates to a shellac dissolving tank for shellac coating production, which comprises a tank body, a support seat arranged at the bottom of the tank body, a premixing cavity arranged at the upper part of the tank body, a dissolving cavity arranged at the lower part of the tank body, a material guide channel with a valve arranged between the premixing cavity and the dissolving cavity, and a plurality of feed ports arranged at the top of the tank body and connected with the premixing cavity, a premixing stirring mechanism is arranged in the premixing cavity, a plurality of ultrasonic transducers are uniformly distributed on the circumference of the outer wall of the premixing cavity, an ultrasonic generator connected with the ultrasonic transducers is arranged on the supporting seat, a plurality of heating cavities are formed in the inner wall of the dissolving cavity from top to bottom, and electric heating pipes are arranged in the heating cavities; a dissolving and stirring mechanism is arranged in the dissolving cavity, and an auxiliary heating mechanism is arranged on the dissolving and stirring mechanism. According to the device, shellac particles can be conveniently crushed before dissolution and fully premixed with a solvent, heating is uniform in the dissolution process, and the dissolution and mixing effects are good.

The invention belongs to the field of food additives-compound coating agents and medicine solid preparation film coating agents, and particularly relates to a lac-based water-based enteric coating composition as well as a preparation method and application thereof. Hydrophobic stearic acid and / or magnesium stearate are / is added into a formula, the hydrophobic stearic acid and / or magnesium stearate and sodium alginate are blended and ground to form the solid dispersion so as to realize non-crystallization of insoluble components, and a water solubility test of the prepared solid dispersion accidentally finds that the solid dispersion has a good water solubility. The stearic acid / magnesium stearate-sodium alginate solid dispersion can be dissolved in water to form a uniform transparent colloidal solution. After the surface of a coated object is coated with a coating solution formed by combining the modified starch with a liquid of a shellac-carrageenan co-treatment substance to form a coating, no white spots exist on the surface, it is found that after acceleration, the coating is good in moisture resistance and free of adhesion, and especially the phenomenon that cracks of soft capsules become white or undesirable in the coating operation process does not occur any more.

The application discloses a kind of over gastrointestinal coating materials and preparation method and application thereof, belong to functional coating material and feed additive preparation technical field.The coating material has continuous phase-dispersed phase two-phase structure: continuous phase includes hydrogenated oil, as over stomach barrier and heat-resistant framework;Dispersed phase includes the degradable microsphere with shellac coating on surface, uniformly embedded in continuous phase.Shellac coating has the dual function of protecting anchoring in stomach and dissolving and exposing microsphere in intestinal pH response.After microsphere degrades in intestinal, form spherical cavity in continuous phase in situ and interconnect into through channel network, guide coating film to be fragmented into small fragments along the arrangement direction of microsphere, it is expected to solve the shell film residue problem caused by the disordered dissolution of existing single-phase homogeneous film depending on surfactant.Microsphere and microfibrillated cellulose can form a synergistic framework to enhance the stability of high-temperature form.The coating material simultaneously realizes the organic unity of high-temperature resistance, over stomach protection and intestinal disintegration, and is suitable for coating treatment of tannic acid and other plant polyphenols feed additives.

The invention discloses a preparation method and application of a bio-based low-surface-energy anti-fouling polyurethane coating. Specifically, cardanol is taken as bio-based polyol, hexamethylene diisocyanate tripolymer (HDIT) is adopted for crosslinking, and single-end hydroxyl-terminated polydimethylsiloxane (PDMS-OH) is introduced for covalent grafting, so that the low-surface-energy anti-fouling polyurethane coating and the preparation method thereof are provided. An internal nano supply pool is formed through covalent grafting of PDMS-OH, so that a low-surface-energy Si-group is enriched on the surface of the coating, and excellent hydrophobic / oleophobic antifouling (static water contact angle is about 108 degrees), good mechanical property and chemical stability are realized while high transparency (light transmittance at 500 nm can reach 100.3%) and smooth surface are maintained. The preparation method is completed by adopting a one-pot method at the temperature of 80 DEG C in the presence of a catalyst DBTDL (0.1 wt%), is simple in process, can be amplified, and is suitable for transparent antifouling protection of various substrates such as glass, metal and the like.

This invention discloses a ceramic membrane comprising a metal oxide particle stacked ceramic membrane body, with shellac adhering to the surface of the metal oxide particles. Using water-resistant, oil-resistant, and corrosion-resistant shellac as a raw material, this invention combines the shellac with the surface of the metal oxide particles via a hydrothermal method, solving the problem of poor oil-water separation and oil removal rate in blank membranes in vinegar-water mixtures, and is also environmentally friendly.

To provide paper-based mulch sheets that use minimal materials derived from fossil resources. [Solution] The base paper and the coated layers formed on both sides of the base paper by coating, The aforementioned base paper contains biomass-derived fibers, The aforementioned coating layer contains shellac, A paper-based mulch sheet in which the proportion of materials derived from fossil resources to the total is 1% by weight or less.

The utility model discloses a shellac varnish coating device, which belongs to the technical field of ammunition assembly and comprises a storage stirring mechanism, a conveying mechanism, a coating mechanism and a rotating mechanism. The storage stirring mechanism is used for storing shellac varnish and stirring the shellac varnish to avoid the phenomenon that the shellac varnish is layered up and down; the conveying mechanism is connected with the storing and stirring mechanism and the brushing mechanism and is used for quantitatively conveying the shellac varnish in the storing and stirring mechanism to the brushing mechanism; the rotating mechanism is used for arranging the grain, and the brushing mechanism is provided with a gluing brush and used for conducting gluing operation on the grain. A gluing module is arranged in the brushing mechanism, and a gluing brush is driven to move and brush the grain; a rotary table and a servo motor are arranged in the rotating mechanism, the servo motor controls the rotary table to rotate so as to drive the grain to rotate, and the outer side face of the grain is coated with the gluing brush. The device has the advantages of being uniform in painting, high in production efficiency, capable of achieving man-machine isolation, safe and explosion-proof.

The present invention relates to a reinforcing agent and a method for reinforcing water-saturated wooden cultural relics using the reinforcing agent, belonging to the technical field of wooden cultural relic reinforcement and protection. The reinforcing agent is made from raw materials consisting of 5 parts of PVAc, 40-60 parts of methanol, 1-10 parts of shellac, and 1-7 parts of H2O2. The reinforcing agent prepared by the present invention has good permeability, a simple preparation process, maintains good biocompatibility with water-saturated wooden cultural relics, effectively improves the strength, toughness, and stability of reinforced water-saturated wooden cultural relics, and meets the requirements for color quality changes after reinforcement of water-saturated wooden cultural relics.

The invention discloses a modified shellac terpene acid based photocuring coating liquid, a preparation method and application thereof, a catalyst and acryloyl halide are sequentially added into a shellac terpene acid solution, and shellac terpene acid is subjected to modification treatment; and then adding a cross-linking agent and a photoinitiator into the modified lac terpene acid, and uniformly mixing to obtain the cured film coating liquid. The coating liquid is subjected to ultraviolet light curing in air and water media, and a formed cured coating is high in surface flatness and compactness; the mechanical property, the physical property, the environmental stability and the electrochemical protection property are excellent, and the adhesive force on metal, inorganic non-metal and organic base materials is strong; the coating has a hydrophobic self-cleaning function and a fluorescence characteristic, and has diversified functions. The product can be used as a waterproof and anti-corrosion coating, is widely applied to the fields of ships, ocean engineering components, outdoor building materials such as curtain walls, guardrail protection and the like, provides a theoretical basis and a technical scheme for industrial application of a bio-based functional coating, and has environmental protection property and practicability.

Coatings may be used to discourage agglomeration and dust formation when handling seeds. Aqueous emulsions suitable for coating seeds and other substrates may comprise an aqueous fluid, a wax, and a polymer blend comprising shellac, a film-forming polymer that is water-soluble or biodegradable, and, optionally, a plasticizer, in which the wax is emulsified as solids in the aqueous fluid and the polymer blend is at least partially dissolved in the aqueous fluid. Optionally, the aqueous emulsions may comprise at least one effect pigment and / or at least one crosslinking agent. The wax and / or the plasticizer may also be naturally sourced as well. Thin-film coatings upon seeds or other substrates may comprise the wax and the polymer blend, in which the shellac is distributed as a continuous phase in the thin-film coating.

The invention discloses a motor train unit train surface shellac oil stain cleaning agent composite additive and a preparation method thereof, and belongs to the field of chemical engineering, the motor train unit train surface shellac oil stain cleaning agent composite additive comprises the following raw materials by mass: 20-30% of a main agent, 5-10% of a surfactant, 8-15% of a solvent, 0.2-1% of a pH regulator, 0.5-2% of a corrosion inhibitor, and the balance deionized water, and the total mass percentage is 100%. The cleaning agent can rapidly permeate and decompose shellac, obviously improve the cleaning effect of shellac and other intractable dirt, the removal rate can reach 95% or above, repeated wiping is not needed, the cleaning efficiency is improved, the cleaning effect and efficiency of shellac and other intractable oil stains on the surface of a front windshield and a train body of a motor train unit train can be effectively improved, the time cost of train maintenance and operation is reduced, and the cleaning agent is worthy of popularization and application. The train operation and maintenance safety is improved.

The application provides a tannin zinc coated feed additive and a preparation method and application thereof, and belongs to the technical field of livestock feed breeding. Plant raw materials containing tannin are crushed and uniformly mixed with zinc-containing compounds to obtain a plant-zinc-containing compound mixture, the plant-zinc-containing compound mixture is added into a double-screw extruder, and after mixing, shearing and compression, an expanded plant tannin zinc is obtained, the expanded plant tannin zinc is crushed, fluidized, granulated and sprayed with a shellac coating solution, and after drying, the tannin zinc coated feed additive is obtained. The application uses plants containing tannin as raw materials, avoids the complicated process of extracting tannin, utilizes a double-screw extrusion process to accelerate the coordination reaction between tannin in the plants and zinc oxide, and adds the shellac coating solution to realize targeted release of the tannin zinc, improve the bioavailability, and the whole preparation process is environmentally friendly, suitable for large-scale production and commercial utilization.