21results about How to "Improved color stability" patented technology

This invention proposes a method and system for intelligent ink volume prediction and adaptive color correction in printing equipment. The method includes: acquiring image data of the page to be printed, performing region segmentation and neighborhood connectivity analysis to generate a structure-weighted effective ink density, and calculating a page-level ink volume prediction value in conjunction with a paper correction factor; mapping the ink volume prediction value and effective ink density to the printhead's basic jetting parameters and the scanning controller's structural constraint parameters; performing linear gain and nonlinear convergence processing on the original color channel values ​​based on the above parameters to generate corrected channel values; driving the printhead to print, and sampling the printed scanned tape using a linear optical acquisition unit; and performing residual compensation and convergence constraint correction on the execution values ​​of subsequent scanned tapes based on the difference between the measured values ​​and the target values. This invention can improve the consistency and accuracy of printed colors.

The invention relates to the field of organic pigments, and discloses a preparation method and application of nano organic pigments with different crystal forms. The preparation method comprises the following steps: 1) dissolving an organic pigment crude product in a good solvent, and adding inorganic salt for activation; 2) dropwise adding a poor solvent at a gradient rate, adding a crystal form guiding agent, and inducing formation of a crystal nucleus; wherein the alpha crystal form directing agent is magnesium stearate; the beta crystal form directing agent is dibutyl phthalate; the gamma crystal form directing agent is polyethylene glycol; the initial gradient rate is 0.5-1 mL / min, and the gradient rate is increased by 0.2-0.3 mL / min every 8-12 min; 3) ultrasonic treatment; 4) cooling, and adding a surface modifier for surface modification; according to the preparation method, the nanometer organic pigment with the target crystal form can be accurately obtained through process regulation and control, the nanometer organic pigment is uniform in particle size distribution, good in dispersity, good in heat-resistant stability and high in color and luster strength, and the nanometer organic pigment has the advantages of being good in flocculation-resistant stability and weather resistance after a coating is formed.

The invention belongs to the technical field of aeronautical materials, and particularly relates to a PEI modified material containing a high-temperature composite dispersion system as well as a preparation method and application of the PEI modified material. The PEI modified material containing the high-temperature composite dispersion system provided by the invention is prepared from the following raw materials: polyetherimide resin, titanium dioxide, carbon black and dispersing agents (a coupling agent and polyamide wax). The PEI modified material containing the high-temperature composite dispersion system provided by the invention can realize efficient and uniform dispersion and color regulation and control of pigments in a high-viscosity and strong-polarity system, and has excellent heat resistance, mechanical property and flame retardant property, and interior structural parts prepared from the PEI modified material meet the comprehensive requirements on light weight, attractiveness and durability in the aviation field.

The invention discloses an optimization process for preparing hydrolysis-resistant PET (polyethylene terephthalate) master batch. The optimization process comprises the following steps: S1, pretreating raw materials; s2, low-temperature pre-dispersion: adding the dried raw materials weighed according to the formula proportion into a high-speed mixer, so that the anti-hydrolysis agent and the auxiliary agent are uniformly attached to the surface of the PET base material to form a premix; s3, mild extrusion granulation: melting and mixing the premix through a twin-screw extruder, and extruding the premix into filaments through a die head; s4, the filaments are rapidly cooled and shaped through a cooling water tank, and secondary cross-linking is avoided; s5, pelletizing by adopting a pelletizer to obtain primary master batches; s6, the primary master batch is subjected to vacuum drying, surface moisture is removed, and the anti-hydrolysis PET master batch is obtained.The thermal degradation of a PET base material and the advanced reaction of an anti-hydrolysis agent are reduced, the intrinsic viscosity of the master batch is stable, and the anti-hydrolysis efficiency is improved.

The utility model relates to the field of lighting, and discloses an LED light source device and lighting equipment. The white ink layer is positioned on the upper surface of the substrate; mounting holes are distributed in the white ink layer; the LED chip is positioned on the upper surface of the substrate and is electrically connected with the substrate through the mounting hole; the white glue reflecting layer is positioned on the surface of the white ink layer and is positioned around the LED chip; and the fluorescent colloid is positioned on the surface of the white glue reflecting layer and covers the LED chip. The white glue reflecting layer is located on the upper surface of the white ink layer, and the white glue reflecting layer has the characteristic of high temperature resistance, is not prone to discoloration at the high temperature and ensures long-term lighting effect stability, so that a good reflecting effect can be achieved on light emitted by the LED chip, the lighting effect of the LED light source device is improved, and the service life of the LED light source device is prolonged. And the problems of color temperature dispersion and poor color consistency can be solved, and the chromaticity stability is improved.

The application relates to the field of high polymer material and film processing technology, in particular to a forming and processing technology of a biaxially stretched polymer film; the technology comprises the steps of inorganic particle surface modification, esterification, polycondensation, melt extrusion casting and biaxial stretching and winding; the technology combines specific monomer copolymerization to provide main chain rigidity and steric hindrance, and cooperates with multifunctional crosslinking monomers to build a slightly long branched and micro-crosslinked structure in the system; the core is to introduce an end group reaction agent and a macromolecular antioxidant to close the polar end group to inhibit degradation, and to combine the surface modified nanoparticles with the monomer containing a sulfonate group to form a polar ion aggregate in the amorphous region; the application overcomes the defects that the traditional process lacks a main chain rigidity cooperative design and an end group closing mechanism, causes a significant increase in thermal shrinkage and a decrease in dielectric performance in a high temperature and high frequency scene, improves the thermal dimensional stability of the material, and improves the dielectric breakdown strength and the surface metal layer adhesion.

The application discloses a kind of image shadow removal methods of balancing deterministic recovery and perceived quality, comprising:1, first stage global regression analysis is carried out to shadow image, global illumination and color consistency of image are repaired using global regression network based on no residual, and deterministic illumination anchor point is established;2, the output of global regression network is input into the diffusion model of second stage as conditional space prior, and local perceptual refinement is carried out using conditional diffusion model based on block, and fine texture details are recovered by generative prior;3, in the reverse denoising sampling process of second stage, introduce random block overlap mechanism, calculate the mean of all covering block prediction noise as updating basis for the purpose of eliminating the boundary artifact when full resolution inference.The application can significantly improve the visual fidelity of the de-shadowed image while ensuring pixel-level accuracy, and can efficiently process high-resolution images under limited video memory constraints.

This invention relates to a copper-doped anhydrous guanine crystal sheet, its preparation method, and its application, belonging to the field of spectral camouflage and stealth materials. Specifically, it relates to a method for synthesizing copper-doped guanine crystals. In this invention, copper-doped chlorophyll is used as the functional molecule, and organic small molecule uric acid and high molecular weight polymer (P(VP-co-VA)) are used as additives to regulate the synthesis of green guanine microsheets that preferentially expose the (100) crystal facet with the optimal refractive index. The guanine crystal microsheets prepared by this invention have high reflectivity and specific visible light absorption in the 200-2500 nm range, while also having the effect of weakening polarized light. Embedding the pigment molecules into the crystal lattice achieves a good stabilizing effect on copper-doped chlorophyll, making it a novel camouflage material with high reflectivity and excellent stability.

The present application relates to the technical field of food processing, and particularly refers to a fruit pulp color protection formula and a processing method thereof. The color protection liquid formula provided by the present application comprises the following components in percentage by mass: 0.05%-0.25% of citric acid, which is used to adjust the pH value of the color protection liquid and create a suitable color protection environment; 0.01%-0.1% of sodium erythorbate, which is used to play an antioxidant role and reduce the oxidation and browning of fruit pulp; and 0.05%-0.5% of calcium chloride, which is used to enhance the stability of the cell wall structure of fruit pulp and reduce the loss of color and luster. The present application has the following beneficial effects: excellent color protection effect: the components in the color protection liquid formula of the present application can synergistically inhibit the oxidation and enzymatic browning of fruit pulp, significantly improve the color stability of fruit pulp, and prolong the shelf life of products; convenient operation: the processing method has clear steps and does not require complex equipment, which is convenient for large-scale production and promotion and reduces the production cost of enterprises; wide applicability: the present application is suitable for various fresh fruit pulp and thawed frozen fruit pulp, and can meet the processing needs of different foods such as fruit jelly and fruit beverage, and has high practical value.

This invention discloses an integrated black effect design structure for AMOLED wearable products, relating to the field of display technology. It includes a cover plate, a semi-transparent black OCA layer, and an AMOLED display screen, all sequentially bonded together, and a dynamic brightness adjustment module. A black ink layer is printed on the side of the cover plate facing the semi-transparent black OCA layer, and this black ink layer matches the color of the AMOLED display screen in its off-screen state. The transmittance of the semi-transparent black OCA layer is 38%-50%. The dynamic brightness adjustment module is electrically connected to the AMOLED display screen. This integrated black effect design structure for AMOLED wearable products achieves perfect color and gloss matching between the display area and the frame in the off-screen state by parameterizing the AMOLED off-screen color, designing a matching ink formula, and establishing a standardized color matching process. Combined with a semi-transparent black OCA layer with a specific transmittance, it results in a significant integrated black visual effect, greatly enhancing the overall aesthetics of the AMOLED wearable product.

The present application relates to the field of ceramics, and particularly to a high-temperature-resistant black colorant suitable for advanced ceramics, a preparation method and applications thereof, wherein the components of the high-temperature-resistant black colorant include, by mass ratio, 15-25% of Co3O4, 8-15% of Cr2O3, 2-5% of MnO2, 3-8% of SiO2, and 40-60% of Al2O3. The present application realizes the thermal expansion coefficient coordination of the colorant and the alumina matrix by introducing a combination of transition metal oxides matching the alumina lattice, thereby inhibiting cracking or peeling caused by interface stress. A composite doping strategy is adopted to make coloring ions (such as Co 2+ , Cr 3+ ) enter the interstitial space of the alumina lattice to form a stable solid solution structure, thereby significantly improving the color stability at high temperatures. Wet ball milling combined with surface modification is used to ensure uniform dispersion of the colorant particles in the alumina slurry and avoid color spot defects caused by agglomeration.

This invention discloses a high-gloss antibacterial ceramic glaze and its preparation method, relating to the field of ceramic glaze technology. By weight, its raw material composition includes: 75-85 parts of base glaze, 8-10 parts of antibacterial system, 6-10 parts of nucleating agent, 3-8 parts of colorant, 1.5-3 parts of auxiliary agent, 0.2-1.5 parts of functional additive, and 0.5-1.5 parts of nano-glossing agent. The functional additive is a compound of graphene quantum dots, quaternary ammonium salt modified montmorillonite, and rare earth carbonates in a weight ratio of (0.02-0.08):(0.1-0.3):(0.1-1). This ceramic glaze achieves a balance of high gloss, efficient and long-lasting antibacterial effect, and excellent glaze quality.

The application discloses an H&E image enhancement method and system based on a biological mechanism and frequency attention, and the method first acquires a virtual staining data set, pre-processes images contained in the data set, generates input image data, and synchronously divides the data set.Secondly, an H&E image virtual staining model based on biological tone perception and frequency separation attention is constructed, feature extraction is performed on the input image data, H&E images after virtual staining are obtained, and enhancement is completed.Finally, a composite loss function composed of an adversarial loss, a cycle consistency loss and an identity loss is constructed, parameter optimization training is performed on the H&E image virtual staining model, and test evaluation is performed.The application effectively improves the color consistency and stability of the virtual staining result while maintaining the tissue structure information, effectively maintains the detail features of the pathological tissue while suppressing the interference of the background artifact.

The application discloses a kind of sulphuric acid method titanium dioxide titanium liquid vanadium chromium manganese depth purification method and bifunctional mesoporous silica adsorbent, belong to titanium dioxide technical field.The application is with amino methylene phosphonic acid / 8-hydroxyquinoline bifunctional mesoporous silica adsorbent as adsorption material, under ORP-150 to-80mV, temperature 45~55 ℃, to sulphuric acid method titanium liquid is carried out multistage series connection adsorption purification, realizes the selective adsorption of V, Cr, Mn, V≤5mg / L in titanium liquid after purification, Cr≤8mg / L, Mn≤15mg / L, removal rate all reach 80% or more, the rutile type titanium dioxide prepared in whiteness, colour strength and color stability under ultraviolet irradiation condition etc.All have obvious promotion, adsorbent can be recycled, it is suitable for clean production of high-quality rutile type titanium dioxide.

The invention belongs to the technical field of fabrics, and particularly relates to a color-retaining and multi-color production process of a yarn-dyed heavy-twist leno fabric. The process comprises the following steps: dyeing yarns in various colors to enable dye to permeate into fibers, humidifying the yarns, performing heavy twisting processing, and forming a tension buffer area through yarn supply adjustment in the heavy twisting process to reduce tension fluctuation; multi-color yarns are woven through double warp beams, so that the tension difference of different yarns is controlled; and carrying out refining treatment on the woven fabric. Through the synergistic effect of the process steps, the color stability and the multicolor effect consistency of the fabric are improved, and meanwhile the stability in the production process is improved.

The present invention relates to absorbent resins and methods for making the same, and more particularly, to absorbent resins having a magnetic susceptibility B of 8 or less, a Centrifuge Retention Capacity (CRC) of 30 g / g or greater as measured according to EDANA method WSP 241.2, an Absorption Under Pressure (AUP) of 9 g / g or greater at 4826 Pa (0.7 psi) as measured according to EDANA method WSP 242.2, and a Permeability of 1,000 seconds or less, and methods for making the same.

The present disclosure relates to a method of preparing a polylactic acid polymer, and more particularly, to a method of preparing a polylactic acid polymer having a desired high molecular weight by using a specific catalyst in a lactide ring-opening polymerization reaction.

The invention provides a colored cutter coating design method, which belongs to the technical field of cutter coatings, and comprises the following steps: firstly, analyzing the requirements of a cutter substrate and a coating; processing conditions and performance requirements are analyzed, a tool base body material and surface parameters of the tool base body material are determined, and mechanical performance parameters of the hard coating and color space parameters of the color coating are determined; then designing a hard coating; selecting a hard coating material according to the mechanical property parameters of the hard coating; designing a color coating; and selecting a chemical color mechanism or a structural color mechanism according to the color space parameters. When the cutter is prepared, the coated cutter comprises a cutter base body, a hard coating and a color coating, the hard coating is deposited on the cutter base body, and the color coating is deposited on the hard coating. According to the invention, independent optimization and collaborative improvement of wear resistance and color function of the cutter coating are realized, and the problem of performance contradiction of the traditional coating is solved.

This invention belongs to the field of polymer materials technology and discloses a yellowing-resistant antibacterial composite material particle and its preparation method. The raw materials for this composite material include a matrix resin, an antibacterial component, a compatibilizer, and other additives, with a weight ratio of (70-95):(3-10):(2-5). The antibacterial component comprises an antibacterial modifier obtained by reacting a monophenolic compound with trihydroxystilbene in a buffer system via laccase catalysis. The matrix resin is polypropylene or polyethylene, and the compatibilizer is preferably maleic anhydride-grafted polypropylene. The preparation method involves premixing the components and then melt-blending and granulating them using a twin-screw extruder. This invention fundamentally solves the technical problems of easy yellowing of nano-silver antibacterial agents and the lack of migration resistance of small-molecule organic antibacterial agents. The resulting composite material exhibits excellent and long-lasting antibacterial properties, outstanding yellowing resistance, and good processing stability, making it particularly suitable for products with high requirements for color and hygiene safety.

This invention relates to the field of phenolic resin technology, specifically to a preparation process for polymerized rosin-modified phenolic resin. First, polymeric rosin with high dimer content is purified by devolatilization, adsorption decolorization, and antisolvent precipitation to obtain directionally polymerized rosin A. Then, an epoxidation reaction is performed to obtain epoxidized product B. Subsequently, cashew phenol, 3-pentadecanylphenol, and oleic acid are grafted in stages to obtain directionally modified polymeric rosin C. Simultaneously, a phenolic prepolymer is prepared. Finally, the prepolymer, modified rosin C, and natural rosin are polycondensed together, and an antioxidant is added to obtain the finished product. This process, through directional control of raw materials and staged reaction control, enables the resin to possess high softening point, light color stability, high n-heptane tolerance, and excellent processing safety, significantly improving batch consistency and making it suitable for high-performance ink binders.

The application discloses a process method for improving color stability of flour, and belongs to the technical field of flour processing, and comprises the following steps: S1, collecting historical temperature data of the environment; S2, taking the minimum and maximum historical temperature data, and filling blank values based on one Celsius degree; S3, setting a first control strategy; S4, collecting historical humidity data; S5, calculating the moisture absorption rate of the flour; S6, collecting historical humidity data; S7, estimating the historical humidity data of the flour; S8, taking the minimum and maximum historical humidity data, and filling blank values based on one relative humidity; S9, setting a second control strategy; and S10, heating, refrigerating or humidifying based on the first control strategy and the second control strategy. The application improves the color stability of the flour by keeping the external environment, does not need to add any additive into the flour, and maximally keeps the self taste of the flour.