142results about How to "Improve appearance performance" patented technology

The invention provides an adhesive, its preparation method and an application method. The adhesive contains a resin ingredient and a cured ingredient, wherein the resin ingredient contains a main resin, a flexibilizer and a filling material. The main resin contains a first epoxy resin and a second epoxy resin, wherein epoxy equivalent of the first epoxy resin is 150-300 and softening point of the second epoxy resin is 65-100 DEG C. The cured ingredient contains a normal-temperature curing agent. After the adhesive is coated on the surface of steel plates, the bonding strength between the steel plates is very high without the need of spot welding or riveting.

The invention discloses a controllable rheological high-gloss polypropylene resin which is composed of the following components in parts by weight: 100 parts of homo polypropylene as a base material, 0.1-0.25 part of processing agent, 0.15-0.2 part of nucleating agent, 0-1.5 parts of hardness regulator, 0.05-0.1 part of glossiness regulator and 1-12 parts of oxide master batch, wherein the number-average molar mass of the homo polypropylene is 61235-65210; the oxide master batch is formed by mixing 100 parts of homo polypropylene and 0.1-0.65 part of peroxide. Thus, the rheological behaviour of the resin can be changed by regulating the additive amount of the peroxide master batch. The controllable rheological high-gloss polypropylene resin of the invention has favourable heat resistance (heat distortion temperature is more than or equal to 110 DEG C) and higher rigidity (bending modulus is more than or equal to 1800 MPa). Because of adopting the controllable rheological technology, the invention can flexibly regulate the melt flowing rate of the material, and the material has excellent processability, heat-resistant quality and mechanical property.

The invention discloses a flame retardant polypropylene material, relating to the technical field of high molecule plastics. The flame retardant polypropylene material comprises the following compositions in percentage by weight: 25-50 percent of high fluidity homo polypropylene, 25-50 percent of high fluidity propylene copolymer, 10-33 percent of flame retardant, 5-30 percent of inorganic strengthening agent, 1-10 percent of barrier additive, 0.1-3 percent of heat resistance strengthening agent, 0.1-4 percent of antioxygen and nucleating agent, 0.1-3 percent of compound pigment and 1-5 percent of internal and external lubricant. The flame retardant polypropylene material reaches V0 grade flame retardation property without lowering the mechanical performance of the material and has good heat resistance and good anti-seep performance.

The invention discloses a cold pad-batch dyeing process for pure cotton fabric. The process flow comprises the steps of: padding and rolling a mixed liquor of a dye and an alkaline agent, coiling and plastic film coating, rotating stacking, primary water washing, soaping, secondary water washing and drying. In the padding and rolling process, an active dye at a concentration of 10g/l is adopted, 10-15 g/l of water glass is adopted as the alkaline agent, a concentration of urea is 3 to 5g/l and a concentration of sodium sulfate is 10g/l. The rotating stacking process is performed for 16h at a room temperature of 10-15 DEG C. By the adoption of the process of the invention, energy can be saved, consumption can be reduced, the fixation ratio of the dye is increased, the grade of the product is improved, and the process cost is low. Besides, the conditions of the cold pad-batch dyeing process are moderate, the fabric is subjected to low tension and small friction, and the apparent effects and hand-feel of the fabric are improved to a great extent.

The invention relates to a low-floating-fiber glass fiber reinforced polypropylene material and a preparation method thereof. The low-floating-fiber glass fiber reinforced polypropylene material is prepared from, by weight, 100 parts of polypropylene resin, 15-30 parts of high-melt-strength polypropylene, 10-50 parts of glass fiber, 1-3 parts of a compatilizer, 5-15 parts of an ethylene-propylene segmented copolymer and 1-2 parts of other auxiliaries. According to the preparation method of the low-floating-fiber glass fiber reinforced polypropylene material, screw extrusion processing is adopted, and the screw combination design principle is adopted, wherein the first region and the second region are only composed of conveying components, the third, fourth, fifth, sixth and seventh regions comprise shearing components, the eighth, ninth and tenth regions are composed of conveying components, and the extrusion temperature is 165-230 DEG C. According to the low-floating-fiber glass fiber reinforced polypropylene material, the mechanical property is excellent, and the surface of the obtained low-floating-fiber glass fiber reinforced polypropylene material is smooth, clean and free of floating fiber.

The invention relates to an extrusion grade ASA resin with easy processing and high apparent property and a preparation method thereof. The extrusion grade ASA resin comprises the following components in part by weight: 50 to 70 parts of SAN resin, 30 to 50 parts of ASA rubber powder, 0 to 10 parts of inorganic filler, 0.1 to 3 parts of low molecular wax, 0.01 to 1 part of boron nitride, 0.5 to 3 parts of plasticizer, 0.2 to 0.6 part of light stabilizer, 0.2 to 1 part of antioxidant and 1 to 3 parts of lubricant. The preparation method comprises the following steps of: stirring and fully mixing the raw materials in a high-speed mixer, delivering the materials into a double-screw extruder through a metering device, melting and compounding the materials under the delivery, shearing and mixing of the screws, and extruding, bracing, cooling and granulating the materials to obtain the extrusion grade ASA resin with easy processing and high apparent property. Compared with the prior art, the preparation method reduces the production energy consumption, improves the bending phenomenon of profiles and plates, and improves the apparent property of ASA.

The invention relates to the field of graphene heat dissipation, in particular to a method for preparing an ultra-thick graphene heat dissipation film. The graphene heat dissipation film obtained by the method can be used as a rapid heat dissipation film for a 3C product, such as a smart phone, a notebook computer, VR wearable equipment and the like. The preparation method mainly comprises the following steps: dissolving, stripping and dispersing graphite oxide filter cake in deionized water; coating and stripping the dispersed slurry; and carrying out thermal reduction on the obtained graphene film to prepare the ultra-thick graphene heat dissipation film. The method is simple in process and low in production cost and energy consumption, and the defects that an original artificially synthesized graphite film is low in heat flux, poor in mechanical property, capable of generating tar pollutants in the production process and the like are overcome; compared with a traditional artificially synthesized graphite film, the disclosed graphene heat dissipation film prepared by the method is adjustable in thickness and can be used as a rapid heat dissipation film of a 3C product.

A manufacturing method of an aluminum alloy shell comprises the following steps: blanking: cutting an aluminum alloy blank according to a preset size to obtain a blanked component; performing solid solution treatment: performing solid solution treatment on the blanked component to obtain a solid solution treatment component; forging and shaping: forging and shaping the solid solution treatment component to obtain a forged and shaped component; and performing aging treatment: performing aging treatment on the forged and shaped component to obtain the aluminum alloy shell. The manufacturing method of the aluminum alloy shell is simple in process and relatively high in production efficiency; the aluminum alloy shell is relatively good in mechanical properties and appearance effect; manufacturing requirements of the shell with complicated structural characteristics can be met.

The invention relates a press-working and solid forming method for improving the mechanical properties of polylactic acid (PLA) material plasticized with polyethylene glycol (PEG). The steps include: (1) preparation of PLA spline plasticized with PEG; (2) press-working and solid forming of the PLA spline plasticized with PEG; (3) heat treatment after the forming. The impacting property of PLA plactics plasticized with PEG can be increased by dozens of times, the stretching property can be increased by two times, solid motion of samples occurs by employing the method to give force on the samples, and in the process of solid motion, the internal microstructure of the material is improved, thereby achieving the purpose of improving the mechanical properties.

The invention discloses butanone-wiping-resistant insulating intaglio printing black ink for thin-film materials and belongs to the technical field of insulating intaglio printing black ink. The butanone-wiping-resistant insulating intaglio printing black ink for thin-film materials comprises ingredients: a resin binder, a solvent, a dispersant, a carbon black filler, a blue pigment/filler, an extinction filler, a curing agent and an assistant. According to the butanone-wiping-resistant insulating intaglio printing black ink, the selected resin binder achieves a good compatible effect under the condition that a prime solvent and a cosolvent are matched according to a certain proportion, and a prepared ink coating is good in apparent effect; the ink disclosed by the invention not only can simultaneously achieve the characteristics of matte black blue phase, good coverage, high insulatibity, solvent resistance, storage stability, constructability, and the like, but also can achieve theseproperties without stacking a variety of coatings; and meanwhile, the ink can achieve very excellent adhesive power on PI materials.

The invention relates to a polyamide 6 composition used for gas aided injection molding, which is characterized by comprising the following compositions by weight percentage: 40 to 80 percent of polyamide 6 slice, 5 to 30 percent of fiber glass, 5 to 30 percent of inorganic mineral, 1 to 10 percent of compatilizer, 0.1 to 0.5 percent of antioxidant, and 0.1 to 0.5 percent of coupling agent. The polyamide 6 composition has the characteristics of higher melt strength, excellent dimension stability, good chemical resistance, smooth product surface and the like, and can be both used for gas aided injection molding of an automobile door pull and other automobiles and mechanical and electrical products suitable for gas aided injection molding.

The invention discloses a water dispersible fluorocarbon finish coating. The finish coating consists of the following components in percentage by weight: 20-25% of fluorocarbon resin, 8-11% of acrylic resin, 1-10% of silicon oxide filler, 5-10% of auxiliaries and 50-60% of a solvent. The water dispersible fluorocarbon finish coating disclosed by the invention has a self-cleaning effect and is excellent in stain resistance; meanwhile, the coating improves apparent property through addition of the inorganic filler silicon oxide; the finish coating, through regulating proportion of the silicon oxide filler, can achieve coating effects of high light, semi matte and lusterless, and can improve wear-resisting property of the coating.

An aluminum product surface treatment method comprises the following steps that oil removing and wax removing treatment is carried out on the surface of an aluminum product; first-time leveling treatment is carried out on the aluminum product subjected to oil removing and wax removing treatment; first-time neutralizing treatment is carried out on the aluminum product subjected to first-time leveling treatment; second-time leveling treatment is carried out on the aluminum product subjected to first-time neutralizing treatment; second-time neutralizing treatment is carried out on the aluminum product subjected to second-time leveling treatment; and die removing treatment is carried out on the aluminum product subjected to second-time neutralizing treatment. According to the aluminum product surface treatment method, oil removing and wax removing treatment, first-time leveling treatment, second-time leveling treatment and die removing treatment are carried out on the aluminum product, mechanical patterns and surface spots of the aluminum product can be well removed, meanwhile, the aluminum product can be brightened, and the appearance effect of the aluminum product is effectively improved.

The invention discloses a high-fluidity high-apparent-performance low-VOC long-glass-fiber-reinforced polypropylene composite material and a preparation method therefor. The polypropylene composite material is prepared from the ingredients in percentage by mass: 30% to 60% of long glass fibers, which are arranged in a manner of being parallel to particle length, and 40% to 70% of polypropylene modified resin, wherein the polypropylene modified resin is prepared through modifying commercial polypropylene resin on the market by a twin-screw extruder. According to the polypropylene composite material and the preparation method therefor, by adding low-melting-point polypropylene, processing windows of extruding and injection molding are increased, and the polypropylene resin can better impregnate glass fibers, so that injection-molded parts are good in apparent performance, free of glass fiber exposure, free of warping and easy in processing; and by the method, the application of a flow modifier in long-glass-fiber reinforced materials is avoided, the VOC can be effectively reduced, and the product prepared by the method has good mechanical properties and has very good application in the aspects of instrument board skeletons, front-end frameworks, automobile stern doors and the like.

The invention belongs to the field of flame-retardant EVA (ethylene-vinyl acetate copolymer) materials, and particularly relates to an ATH (alumina trihydrate)/graphene-synergized flame-retardant EVA material and a preparation method thereof. The flame-retardant material consists of EVA resin, maleic anhydride-grafted EVA, modified aluminium hydroxide, functionalized graphene, antioxidant, plasticizer and cross-linking agent. The formula of the ATH/graphene-synergized flame-retardant EVA material disclosed by the invention is reasonable, the amount of the added metal hydroxide flame retardant is small, the dispersibility is good, the good flame-retardant property of materials is met, the oxygen index is high, the UL-94 flammability grade can reach V-0, the mechanical properties of the material are good, the preparation method is simple and easy to implement, the operation cost is low, all the involved materials are easy to obtain and manufacture, and the invention is suitable for mass production in the industry.

The invention discloses a graphene high-elasticity rubber elastomer high polymer material and a preparation method thereof. The high polymer material is prepared from the following raw materials by weight: 45-50 parts of natural rubber, 15-19 parts of styrene-butadiene rubber, 10-14 parts of an ethylene-octene copolymer, 13-16 parts of an ethylene-butyl acrylate copolymer, 16-20 parts of an ethylene-vinyl acetate copolymer, 2.4-3.0 parts of grapheme, 6.5-8.5 parts of silane coupling agent modified glass fiber, 1.6-2.1 parts of a foaming agent, 0.82-0.95 part of a micropore regulator, 1.8-2.2 parts of a bridging agent, 2-4 parts of polyethylene wax, 3-5 parts of maleic anhydride grafted polypropylene, 1.8-2.4 parts of a cross-linking agent, 3.5-5.5 parts of an antioxidant and 3-4 parts of aheat stabilizer. The product disclosed by the invention has good resilience and memory function, also has high elasticity, still has very low permanent compression set value at -40DEG C, and has goodflexibility.

The invention discloses a method for producing a polystyrene extruded sheet profiled bar through a carbon dioxide foaming agent. The method includes the following steps: taking a polystyrene melt as the main component, and taking carbon dioxide as a polymer melt of the foaming agent, and simultaneously adding the two objects into an extruder according to a certain proportion to form a polymer melt; injecting carbon dioxide from the middle section of the extruder to the melt through a foaming agent injection system to form foamable gelatin; along with the forward conveying of the melt, and under the shearing action of a screw, fully mixing the foaming agent with the polystyrene melt; performing mixing and temperature reduction and cooling to the polymer melt through a heat exchanger, so as to reduce the temperature of the gelatin to the optimal foaming temperature; extruding the cooled gelatin through a die with required shapes to form the polystyrene extruded sheet profiled bar. The method for producing the polystyrene extruded sheet profiled bar through the carbon dioxide foaming agent, provided by the invention, is economic and environment-friendly, is simple in technology, and has excellent market prospect.

The invention relates to a low-friction coefficient anti-bonding master batch special for a metallized base film and a preparation method thereof. The low-friction coefficient anti-bonding master batch mainly comprises, by weight, 90-95 parts of polypropylene resin and 5-10 parts of polymethylsesquisiloxane-polyphenylsilsesquioxane. The polymethylsesquisiloxane-polyphenylsilsesquioxane is a ladder polymer with R3SiO terminated. The molecular formula of the polymethylsesquisiloxane-polyphenylsilsesquioxane is [CH3SiO1.5]n-[PhSiO1.5]m, wherein n is 5-8 and m is 2-5. According to the preparation method, an anti-sticking agent is added by means of side feeding through precision electronic weight loss scales, and pelleting is performed after melt blending by means of the special double-screw process. By the adoption of the method, the problem that no slipping agent (master batch) can be added into the metallized film and thus the friction coefficient is high and the problem that the low friction coefficient is required under the condition that no migration slipping agent can be added into an aluminum laminated film are effectively solved. The friction coefficient of the obtained metallized base film is lowered to 0.4 or below from 0.8 or above, the slipping property is good, no migration happens, and the product surface is not greasy, high in glossiness, resistant to abrasion, lasting and effective.