19results about How to "Reduce fading" patented technology

The invention discloses an efficient short-wave and radio-frequency broadband converged communication digital signal processing system, belongs to the technical field of communication, and aims to solve the problem that defects exist when existing short-wave and radio-frequency broadband are used independently and in a converged mode. The frequency and bandwidth resource combination optimization system adopts a genetic algorithm to optimize frequency and bandwidth resource combination, and comprises a parameter setting module, a signal monitoring and data collection module, a fitness evaluation module, a genetic algorithm operation module, a termination judgment module and a signal processing and communication module. The method can better adapt to ionosphere changes, reduce signal fading and interruption, effectively cope with external interference and reduce the bit error rate through monitoring signal characteristics and reasonably allocating resources, carries out frequency and bandwidth resource combination optimization by comprehensively considering various factors by applying a genetic algorithm, avoids the problems of short-wave frequency band congestion and insufficient utilization of radio frequency broadband bandwidth, and improves the utilization rate of the radio frequency bandwidth. The fusion of two communication resources is realized, and the overall efficiency of the system is improved.

The invention relates to a thermal transfer receiving sheet capable of transferring a high-color-concentration image and a preparation method of the thermal transfer receiving sheet, and relates to the technical field of thermal transfer. The heat transfer printing receiving sheet comprises a receiving layer, and the receiving layer is prepared from the following raw materials in parts by weight: 30 to 60 parts of vinyl chloride-vinyl acetate resin, 3 to 10 parts of polyvinyl butyral resin, 0.1 to 5 parts of poly-alpha olefin and 0.1 to 1 part of release agent. According to the heat transfer printing receiving sheet formed by the raw materials of the receiving layer, the color saturation of an image on the heat transfer printing receiving sheet can be obviously improved, the heat transfer printing receiving sheet has high demolding performance, and the problems of adhesion, fading and other transfer printing defects occurring in transfer printing are solved.

The invention discloses a tire glazing agent and a preparation method thereof, and relates to the technical field of glazing agents. When the tire glazing agent is prepared, firstly, methyl ethyl ketoxime terminated polyurethane reacts with diaminothiourea, then reacts with 3-thiophenecarbonyl chloride and then reacts with thiophene to obtain modified polyurethane; secondly, reacting 3-aminopropyl polydimethylsiloxane with carbon disulfide and phosphorus oxychloride, then reacting with 4-aminobenzophenone, and finally reacting with methyl cyanoacetate to obtain modified silicone oil; finally, the modified polyurethane emulsion, the modified silicone oil, liquid wax, solvent oil, pure water, ethylene glycol, methyl cellulose and sodium dodecyl benzene sulfonate are added. The tire glazing agent prepared by the invention has good antibacterial property and antistatic property.

The invention provides a digital printing process for a high-color-fastness cotton fabric, and relates to the technical field of textile printing and dyeing, and according to the digital printing process for the high-color-fastness cotton fabric, the color fastness of digital printing of the cotton fabric is remarkably improved by accurately controlling parameters such as temperature, time and concentration of each stage; according to the method, the color shedding and fading phenomena in the use and washing process are reduced, the service life of the fabric is prolonged, the optimized pretreatment step can effectively remove the sizing agent on the cotton fabric, a good foundation is provided for subsequent sizing and printing, the uniformity and definition of printing are ensured, and the printing quality is improved. The adhesive force of printing ink on the cotton fabric is enhanced through reasonable sizing treatment, so that printed patterns are brighter and finer, meanwhile, the hand feeling and air permeability of the fabric are improved, digital printing parameters are accurately controlled, it is ensured that the printing ink permeates and is evenly distributed, the color is bright and saturated, and the pattern precision is high; and the requirements of consumers on high-quality printing are met.

The invention discloses a crosslinked anthraquinone-benzoquinone polymer containing arylamine bonds for cosmetic dyeing as well as a preparation method and application of the crosslinked anthraquinone-benzoquinone polymer, and belongs to the technical field of cosmetics. The structural general formula of the polymer is as shown in formulas 1-3 in the specification. The preparation method comprises the following steps: (1) adding the component A and the component B into the component C, heating and stirring to obtain a mixed solution; and (2) centrifuging the obtained mixed solution, taking the supernatant, freezing the supernatant in a refrigerator, and performing vacuum freeze drying to obtain the product. The product provided by the invention can solve the problems of non-uniform dyeing process, insufficient color fastness and the like caused by poor dyeing stability, water solubility and hydrophilicity in the existing organic cosmetic dyeing agent. The chemical reaction conditions are mild, the method is simple, no side reaction occurs, and the obtained polymer can be used in the technical field of cosmetics and has wide application prospects.

The application provides a model airplane handle. In operation, the first driving assembly and / or the second driving assembly are controlled to move, and the rolling fit between the connecting ball part and the driving torque is converted into the rotation of the ball part around the ball center of the half-ball groove, so that the spatial angle of the antenna relative to the shell is continuously changed (the independent adjustment of the azimuth and the pitch can be correspondingly realized). By providing the spherical rotation pair and the orthogonal driving inside the handle, the antenna can be adjusted in real time without changing the holding posture, so as to adapt to the rapid change of the position and the posture of the model airplane in the urban environment. The model airplane direction can be actively aligned and the polarization matching can be optimized, so that the link fading caused by the shielding and the multipath is reduced, the stability and the effective distance of the control link are improved, and the risk of packet loss and loss of control is reduced.

The utility model discloses protective safety laminated glass for buildings, which comprises a window frame, glass plates and rapping bars, the glass plates in double-layer design are erected on the inner wall of the window frame, a partition plate is mounted at one corner of the window frame, the rapping bars are arranged on the window frame along the inner side of the partition plate, and the rapping bars are distributed along the corners of the glass plates. A knocking head penetrates into one end of the knocking rod, a connecting plate is movably connected to the outer wall of the end, along the knocking head, of the knocking rod, and a first connecting shaft and a second connecting shaft penetrate into the two ends of the connecting plate correspondingly. When the protective safety type laminated glass for the building is used, the double-layer glass plate breaking structure adopts a first-level lever structure design, the requirement of a user for breaking the whole double-layer glass plate is met, convenience is brought to people who escape from or rescue a room subsequently, the double-layer glass plate breaking structure serves as a prevention structure, a good safety protection effect is achieved, and the service life of the double-layer glass plate is prolonged. The situation that the double-layer glass plate is difficult to break due to disasters is reduced, and convenience is brought to follow-up rescue or escape.

The present application relates to the field of optical fiber sensing, in particular to a kind of optical cable icing monitoring method and device.Mainly include: obtaining the first sensing data sequence in each sensing period, according to the first sensing data sequence, obtain the phase data sequence in each period;According to the phase data sequence, obtain the frequency spectrum data of the corresponding position phase change, according to the average value of the frequency spectrum data in multiple sensing periods, obtain the characteristic frequency, and estimate the icing thickness of the optical cable according to the change of the characteristic frequency.The present application reduces the interference fading of signal and environmental random noise, improves the single-span distance of icing monitoring, and can improve the icing monitoring accuracy.

The utility model relates to the technical field of PVC (polyvinyl chloride) floors, and discloses an antiskid wear-resistant PVC outdoor floor which comprises a PVC base layer and a surface layer, a supporting bottom layer is arranged at the bottom end of the PVC base layer, a reinforcing grid layer used for increasing the structural rigidity of the PVC base layer is arranged between the PVC base layer and the surface layer, and an ultraviolet curing layer is arranged on the surface layer. Heightening pads are fixedly connected to the periphery of the bottom end of the supporting bottom layer, the supporting bottom layer comprises a base stabilizing layer fixedly connected to the bottom end of the PVC base layer, a plurality of reinforcing ribs are arranged in an inner cavity of the base stabilizing layer, a plurality of supporting rods are fixedly connected to the bottom end of the base stabilizing layer, and a plurality of buffer columns are arranged among the reinforcing ribs; rigid supporting and impact absorbing performance of the floor are improved through the reinforcing ribs and the buffer columns, meanwhile, the distance between the floors is increased through the heightening pads and the supporting rods, the drainage effect is improved, and the situation that due to the fact that the floors are irradiated by sunlight, the surfaces of the floors fade, deform or age is avoided through the ultraviolet curing layers and the reinforcing grids.

The utility model discloses a decorative fabric with high color fastness. The decorative fabric comprises a base cloth layer and a decorative layer. The decorative layer is fixed on the outer surface of the base cloth layer through the bonding layer; the bonding layer comprises bonding points which are arranged in an array; the decorative layer is woven into a net by warp yarns and weft yarns, the warp yarns are polyester fiber yarns, the weft yarns are bamboo charcoal fiber yarns, and a suede layer is formed on the outer surface of the decorative layer through raising of the weft yarns; a waterproof film layer is further arranged on the outer surface of the decorative layer; and the base cloth layer is a high-color-fastness base cloth layer. The fabric provided by the utility model adopts a mode of raising the decorative layer, so that the fabric has decorative aesthetic feeling; the characteristics of different warps and wefts are utilized, so that the fabric has moisture absorption and air permeability; the high-color-fastness fiber yarns adopted by the base cloth layer have the characteristic of high color fastness, and the possibility of fading of the fabric due to external factors is reduced under the superposed protection of the decorative layer and the waterproof film layer, so that the aesthetic property of the fabric is improved, and the service life of the fabric is prolonged.

The utility model relates to the technical field of kit, concretely to a kind of ammonia nitrogen reagent is with rapid quantitative kit, including box, support seat, color card, limit frame, protective plate and connecting mechanism, the support seat is set in the box bottom, the support seat is equipped with several, the box top center is equipped with liquid inlet assembly, the box one side bottom is equipped with liquid outlet assembly, the limit frame is set in the box front one side, the box front other side is equipped with observation window, the color card is located in the limit frame interior, the color card top is connected with electromagnet one end, electromagnet other end adsorbs the limit frame inner wall, the protective plate is connected with the limit frame by the connecting mechanism, the connecting mechanism includes sliding slot, fixed block, limit block, bearing, electric push rod and limit plate, the sliding slot is opened in the limit frame inner wall, a kind of ammonia nitrogen reagent is with rapid quantitative kit of the utility model, solve the problem that current equipment protection effect is poorer.

The invention relates to the technical field of textile printing and dyeing, in particular to printing feed liquid, a preparation method thereof and application of the printing feed liquid in printing and dyeing. The printing material liquid is prepared from the following raw materials in parts by weight: 60 to 70 parts of modified acrylic emulsion, 2 to 2.4 parts of thickening agent, 0.5 to 1.5 parts of dispersing agent, 4 to 5 parts of stabilizing agent, 0.5 to 1 part of humectant, 1 to 2 parts of curing agent, 0.2 to 0.4 part of defoaming agent, 3 to 5 parts of dye and 50 to 60 parts of water. The printing material liquid prepared by the invention can be used for remarkably improving the quality of printed patterns and enhancing the color fastness to rubbing and the color fastness to washing of printed fabrics.

The invention belongs to the technical field of composite glass, and particularly relates to high-strength composite glass and a processing technology thereof. The invention relates to high-strength composite glass, which is prepared from the following materials in percentage by weight: 45 to 65 percent of silicon dioxide, 5 to 10 percent of aluminum oxide, 5 to 10 percent of calcium carbonate, 3 to 5 percent of barium oxide, 2 to 3 percent of zirconium oxide, 6 to 8 percent of high-temperature-resistant modified bisphenol A epoxy resin, 6 to 8 percent of E type glass fiber, 1 to 1.5 percent of isocyanate, 2 to 5 percent of magnesium hydroxide, 1 to 1.5 percent of polyether amide, 1.5 to 3 percent of tert-butyl quinone and 1 to 1.5 percent of hydroxystyrene. The glass has high strength and impact resistance, the glass cannot be broken into sharp fragments when the glass is impacted, threats to personal safety are reduced, heat conduction can be effectively blocked, and the service life of the glass is prolonged. Meanwhile, most of harmful ultraviolet rays can be filtered out, indoor furniture, floors and artworks are protected, and color fading and damage are reduced.

This application relates to the field of concrete technology, specifically disclosing a fair-faced concrete and its preparation method. The raw materials for fair-faced concrete include cement, fly ash, mineral powder, glass powder, sand, reinforcing coarse aggregate, water, water-reducing agent, defoamer, and pumping agent; the preparation method is as follows: (1) cement, fly ash, mineral powder, glass powder, sand, and reinforcing coarse aggregate are added to a mixer and mixed evenly; (2) water, water-reducing agent, defoamer, and pumping agent are added to the mixer and mixed evenly to obtain fair-faced concrete. The fair-faced concrete of this application has the characteristics of high strength and high fluidity. Therefore, the vibration step is omitted during the construction and pouring process, greatly shortening the construction cycle, reducing the possibility of operational errors, and reducing rework costs.

The invention belongs to the technical field of pigment production, and particularly relates to a high-color-intensity organic pigment production process which comprises the specific steps of pigment slurry preparation, composite slurry preparation, pigmentation treatment, filter pressing, washing and high-color-intensity organic pigment preparation. According to the production process, the organic pigment filter cake is beaten and then combined with bismuth oxychloride, the polarity of the organic pigment can be effectively changed, the dispersity is improved, a natural barrier is formed for the organic pigment, the coloring power of the organic pigment is improved, meanwhile, the hydrolysis reagent triethanolamine is added to act together with bismuth oxychloride, and the organic pigment with the small and stable particle size is prepared. The organic pigment is easy to dye functional chemical fibers, two solvents of DMF and NMP are used in a mixed mode in the pigmentation stage, organic pigment particles can be better dispersed, and the pigmentation treatment efficiency is improved. The production process of the high-color-intensity organic pigment is short in time, high in efficiency, green, environmentally friendly and suitable for various organic pigments.

The invention relates to the technical field of pigment preparation, discloses an anti-fading plastic pigment which comprises the following components in percentage by weight: 70-90% of tungstate or titanate, 3-10% of rare earth doped ions and 2-8% of transition metal doped ions, and further discloses a preparation method of the anti-fading plastic pigment. Comprising the following steps: S1, preparing a precursor solution: dissolving tungstate or titanate in deionized water, adding a citric acid chelating agent, stirring for 50-60 minutes to form a basic solution, and slowly adding a rare earth doped ion and transition metal doped ion solution; through synergistic doping of rare earth and transition metal ions, doped ions form a stable solid solution structure in barium titanate or tungstate crystal lattices, meanwhile, an optimized high-temperature roasting process and atmosphere control are combined, the thermal stability of the pigment is effectively improved, and ultraviolet absorption and oxidation resistance are enhanced through introduction of the rare earth ions.

The invention discloses ship glass and a preparation method thereof, and relates to the technical field of ship glass. The ship glass comprises a first glass substrate, a second glass substrate and an aerogel layer, the aerogel layer is fixed between the first glass substrate and the second glass substrate, the first glass substrate is located on the side away from the interior of a ship, and the second glass substrate is located on the side close to the interior of the ship. The aerogel layer is a silica aerogel layer doped with titanium oxide, and the aperture of the aerogel layer is gradually reduced in the direction from the first glass substrate to the second glass substrate. The ship glass provided by the invention has the titanium oxide doped aerogel, and the aerogel has gradient aperture, so that not only can ultraviolet rays be effectively isolated, but also the heat insulation and sound absorption effects of the ship glass can be improved on the basis of ensuring good light transmission performance.

The invention relates to the field of spraying, in particular to solid wood furniture surface spraying equipment and a spraying method.The spraying equipment is arranged above a conveyor, a spraying chamber allowing the spraying equipment to be installed therein is arranged on the conveyor, the spraying equipment comprises a spraying pipe and a multi-axis moving assembly, and the multi-axis moving assembly is provided with a moving frame allowing the spraying pipe to be fixed; the movable frame is provided with a material injection channel communicated with the spraying pipe, the two sides of the spraying pipe are each provided with a wiping assembly, a spraying opening is formed in the lower end of the spraying pipe, through holes are formed in the surface, right opposite to each wiping assembly, of the spraying pipe, and the spraying pipe is provided with a switching assembly used for switching the opening and closing states of the spraying openings and the through holes. Through the two stages of primary primer spraying of the spraying pipe and subsequent coating wiping, the coating permeates into wood, the wood is dredged through dehumidification treatment, plant pigment can stay in wood fibers, wood color fading is avoided, and the bright effect of the color is guaranteed.

An audio signal processing method and device based on a machine learning algorithm CatBoost, belonging to the fields of audio signal processing and computer technology. A spatial directional receiving array is used to collect real-time audio signals of a sound source, a signal preprocessing system is used to preprocess the collected real-time audio signals, and the preprocessed data is used as input data of the machine learning algorithm CatBoost. The present invention uses a spatial directional receiving array to arrange signal receivers. Due to the improved arrangement of the spatial directional receiving array, the signal fading and interference are reduced, thereby improving the signal reception quality. At the same time, the technical solution makes full use of the characteristics of the machine learning algorithm CatBoost that it is good at processing category features, and applies the machine learning algorithm CatBoost to the field of audio signal processing, thereby obtaining the beneficial effect of being able to handle missing values ​​and outliers of data well while maintaining category information.