57results about How to "Good coloring effect" patented technology

The invention provides a chip lamp bead and a lamp, and relates to the technical field of lamp beads, the chip lamp bead comprises a packaging body and a lamp bead body packaged in the packaging body; wherein the lamp bead body comprises a substrate, and a first luminous body, a second luminous body and a control chip which are arranged on the substrate. The white light illuminant and the illuminant of the preset color system are integrated in one lamp bead, different lamp beads and different colors of the lamp beads can be controlled in a unified mode through the control chip, and the functionality and flexibility of the illumination and decoration lamp system are improved. On the basis of the white LED, the color temperature adjustment of the preset color system from the warm color tone to the cold color tone can be realized by adjusting the proportion of white LEDs (such as warm white and cold white) with different color temperatures. Moreover, the color of single-color blue light is purer, the color of single-color white light or warm white light is more consistent, and the yield can be increased to 99% or above.

The invention relates to the field of weaving technology, and in particular to a warp knitting imitating woven jacquard process manufacturing method, mesh cloth and shoe upper, including a comb setting step, a warping step, a yarn threading step, and a weaving step. The invention not only has the appearance and texture of woven fabrics, a flat cloth surface, good drape and other advantages, but also has the advantages of warp knitting fabrics being crisp, good anti-loosening property, good extensibility, good dimensional stability, and not easy to have fringes. During weaving, due to the good anti-loosening property, the coil loosening defect caused by broken yarn and holes in weft knitting fabrics can be effectively solved. The invention has high output, low price, high speed, and the warp knitting fabric is not easy to have fringes, which can effectively solve the fringing defect of woven fabrics and break through the limitations of traditional processes.

The present application relates to a kind of scratch-resistant easy-to-color polypropylene composite material and its preparation method and application, belong to the composition technical field of polymer compound.The scratch-resistant easy-to-color polypropylene composite material of the present application includes the following weight parts of component: polypropylene resin 50~99 parts, toughening agent 0~20 parts, filler 0~25 parts, flake graphite 0.05~1.1 parts, scratch-resistant agent 0.5~4 parts;The flake graphite includes flake graphite A and flake graphite B, the mesh number of the flake graphite A is ≥1000 mesh;The mesh number of the flake graphite B is ≤400 mesh, and the flake layer structure between flake graphite B is filled with scratch-resistant agent.The polypropylene composite material not only has excellent scratch resistance, but also has good coloring performance.

The invention provides a low-melting-point red disperse dye as well as a preparation method and application thereof, and particularly relates to the technical field of dye chemical industry. The low-melting-point red disperse dye has a # imgabs0 # structure, and in the formula, R1 is nitro, chlorine, bromine or cyano; r2 is alkyl of C1-C6 or hydrogen; r3 is an alkyl group of C1 to C6; r4 is an alkylene group of C1 to C6; and R5 is an alkyl group of C1 to C6. The melting point of the low-melting-point red disperse dye ranges from 106 DEG C to 108 DEG C and is lower than the dyeing temperature, and due to the low-melting-point characteristic, the low-melting-point red disperse dye can directly and effectively dye polyester fibers and blended fabrics of the polyester fibers under the condition of not depending on traditional dispersing agents. The dye disclosed by the invention not only has the advantages in melting point, but also has very excellent dyeing performance which is specifically shown in the following aspects: the color fastness to washing is grade 4-5, the color fastness to perspiration is grade 4, the color fastness to sublimation is grade 3-4, the color fastness to sunlight is grade 5-6, and the performance is excellent.

The utility model discloses a reference surface scraping and repairing shaft device, which belongs to the technical field of shaft tool repairing and comprises a supporting table, a shaft tool is arranged in the middle of one end of the supporting table, and a pair of electric telescopic rods is fixedly connected to the two sides of one end of the supporting table respectively. And the output ends of the two pairs of electric telescopic rods are fixedly provided with the same cover plate, the other end of the supporting table is fixedly connected with a driving motor and a pair of driving air cylinders, the output end of the driving motor is provided with an extension rod in a penetrating mode, and the end, close to the outer side, of the extension rod is fixedly connected with a coloring disc. According to the coloring device, the coloring work of the scraping reference surface can be rapidly completed, the coloring efficiency of the reference surface is improved, follow-up scraping machining is facilitated, the supporting assembly is arranged, the moving stability and rotating stability of the coloring assembly are guaranteed, the problems of shaking and deviation of the coloring assembly are avoided, and the coloring effect is improved.

The invention relates to the technical field of golden pomfret fresh-keeping processing, in particular to a golden pomfret block fresh-keeping and color-retaining processing method. Comprising the following steps: opening the back of the trachinotus ovatus from a position 1-2cm away from the tail of the trachinotus ovatus, peeling, removing bones and removing viscera; washing, and dividing back muscles of trachinotus ovatus into a plurality of fish blocks; deionized water is put into a brown bottle, a plasma radio frequency device is placed below the liquid level of the deionized water for activating treatment for 1-5 min, the treated plasma radio frequency device is refrigerated at the temperature of 0-4 DEG C, and a multifunctional soaking solution is prepared; soaking the golden pomfret blocks into the multifunctional soaking liquid for 10-15 minutes, and stirring the liquid level once every 3-5 minutes during the soaking process; after soaking, taking out the golden pomfret blocks, and draining water; putting the golden pomfret blocks into a composite phosphate water-retaining agent, and performing ultrasonic treatment for 8-15 minutes; draining the fish blocks, and performing vacuum packaging. The method has the advantages that the storage period of the trachinotus ovatus blocks is prolonged; the red degree value and the content of nitrosomyoglobin of the trachinotus ovatus blocks are remarkably increased, and the sensory characteristics of the trachinotus ovatus blocks are maintained.

The invention discloses a preparation method of brominated polystyrene, and belongs to the technical field of brominated polystyrene preparation, the preparation method comprises the following steps: preparation of a main chain bromination inhibitor, preparation of a catalyst, and reaction; the reaction comprises the following steps: mixing polystyrene and dichloroethane, stirring at 35-40 DEG C for 30-40 minutes under the protection of nitrogen, cooling to 0-2 DEG C, adding a main chain bromination inhibitor and a catalyst, stirring for 20-30 minutes, dropwise adding a dichloroethane solution of N-bromosuccinimide, stirring at room temperature for 1.5 hours after dropwise adding, finishing the reaction, washing by using a sodium hydroxide aqueous solution, and drying to obtain the product. Washing with water, then filtering, and carrying out evaporative crystallization, filtering and vacuum drying on the filtrate to obtain brominated polystyrene; the brominated polystyrene prepared by the method is good in color performance and thermal stability, high in bromine content, narrow in molecular weight distribution, good in reaction controllability and short in reaction time.

The present invention relates to a thermoplastic resin composition, a method for preparing the same and a molded product including the same. More specifically, the present invention relates to a thermoplastic resin composition, a method for preparing the thermoplastic resin composition and a molded product including the thermoplastic resin composition, comprising 35% to 85% by weight of an alkyl acrylate-aromatic vinyl compound-vinyl cyanide graft copolymer (A) and 15% to 65% by weight of a polymethacrylate resin (B), wherein the graft copolymer (A) contains an alkyl acrylate rubber having an average particle size of 50nm to 120nm, wherein the alkyl acrylate coverage value (X) calculated by equation 1 of the thermoplastic resin composition is 70% or more. According to the present invention, the present invention has the following effects: providing a thermoplastic resin composition, a method for preparing the thermoplastic resin composition and a molded product including the thermoplastic resin composition, the thermoplastic resin composition having excellent mechanical properties such as impact strength, tensile strength and flexural strength, surface hardness, transparency and colorability, and being able to prevent whitening during bending due to excellent non-whitening properties.

The utility model relates to display equipment technical field especially LED packaging structure and display device, LED packaging structure includes wiring layer, with the LED chip of wiring layer electricity connection, the filling layer that sets up around LED chip, set up in the sapphire layer that LED chip far away from wiring layer one side and LED chip are pasted, LED packaging structure still includes the fluorescent layer that sets up around filling layer and sapphire layer, fluorescent layer sets up around filling layer and sapphire layer, realizes spectrum conversion, when the blue light that LED chip emits irradiates on fluorescent layer, fluorescent layer absorbs part blue light and emits other color light, and the white light that mixes with blue light is obtained to realize MIP white light product, make the light that emits from LED packaging structure more uniform, improve illumination quality and visual comfort.

The invention discloses an LED dyeing lamp optical system which comprises an LED light beam dyeing optical system and an LED color effect system, the LED light beam dyeing optical system is used for achieving the light beam effect and the dyeing effect and comprises multiple sets of light beam optical systems, and each set of light beam optical system comprises a first LED light source, a color mixer and a condenser; the multiple groups of light beam optical systems can be arranged according to different shapes; the LED color effect system is used for achieving the visual effect of the lamp strip and improving the dyeing brightness and comprises a second LED light source and an effect lens, and the LED color effect system is annularly distributed on the periphery of the LED light beam dyeing optical system. According to the optical system, the light beam effect and the dyeing effect of a conventional dyeing lamp can be achieved, the visual effect of a lamp strip can be improved, and the light spreading and dyeing brightness is improved; the LED light beam dyeing optical system and the LED color effect system are combined, so that a more abundant and gorgeous stage effect can be achieved.

The invention provides an illumination system for generating an illumination light beam and a projection device. The illumination system comprises an excitation light source, a light guide module, a collimating lens group and a wavelength conversion element. The excitation light source emits an excitation beam. The light guide module, the collimating lens group and the wavelength conversion element are arranged on a transmission path of the excitation light beam. After being emitted from the excitation light source, excitation light beams are sequentially reflected by the light guide module, penetrate through the collimating lens group and then are transmitted to the wavelength conversion element. One part of the excitation light beam is sequentially reflected by the wavelength conversion element, penetrates through the collimating lens group and then penetrates through the light guide module, and the other part of the excitation light beam is converted into a conversion light beam by the wavelength conversion element. The conversion light beam penetrates through the collimating lens group and then penetrates through the light guide module. The part of the excitation light beam emitted from the light guide module and the conversion light beam form an illumination light beam.

The invention relates to the field of dyeing and finishing of bio-based fabrics by bio-based dyes, in particular to a method for dyeing polylactic acid / cotton blended fabrics, which comprises the following steps: mixing visible blue, sodium hydrosulfite, sodium carbonate, caustic soda and water, fully reducing and diluting to obtain visible blue dyeing liquid, adjusting the pH value to be acidic, then mixing with a dispersing agent and an accelerating agent, and uniformly stirring to obtain the polylactic acid / cotton blended fabrics. Immersing the polylactic acid / cotton blended fabric for dyeing treatment, and then performing color development treatment, soaping treatment and color fixation treatment. Aiming at the problem that the polylactic acid / cotton blended fabric is difficult to dye at present, the dyeing method for the polylactic acid / cotton blended fabric is provided, the microbial-sourced ornamental blue is selected as a dye, and the dyeing method has the advantages of being green, environmentally friendly and easy to combine with the polylactic acid / cotton blended fabric; meanwhile, according to the dyeing process, on one hand, the using amount of sodium hydrosulfite is reduced, so that pollution to the environment is reduced, and on the other hand, the dyeing temperature and time are reduced, the energy consumption is reduced, and the dyeing efficiency is improved.

The present invention relates to the technical field of laminated glass, specifically to a high-strength laminated glass based on an intermediate film and a preparation method thereof. Step 1: Add polytetrahydrofuran ether diol and a reactive anti-ultraviolet agent to N,N-dimethylformamide in sequence; add diisocyanate and an organic tin catalyst in sequence under a nitrogen atmosphere; heat to 80-85°C for reaction for 2-3 hours; vacuum degassing; add a starch dispersion containing starch nanoparticles, and stir for 20-30 minutes under ultraviolet light; add a chain extender and a reactive dye, and stir for 20-30 minutes; pour it into a mold, solidify it; stand at room temperature to obtain an intermediate film; Step 2: Soak the intermediate film in toluene for 6-10 hours, transfer it to methanol and soak it for 2-4 hours; dry it at room temperature for 3-5 days; obtain a modified intermediate film; Step 3: Place the modified intermediate film between two layers of glass, and hot press and compound it to obtain a high-strength laminated glass.

The invention relates to an NBR / TPU (nitrile butadiene rubber / thermoplastic polyurethane) dynamic vulcanization material. The NBR / TPU dynamic vulcanization material comprises the following components in parts by weight: 60-80 parts of nitrile butadiene rubber, 10-20 parts of styrene-butadiene rubber, 10-20 parts of styrene-acrylonitrile copolymer, 7-10 parts of copper sulfate, 1-5 parts of vulcanizing agent, 30-50 parts of thermoplastic polyurethane elastomer and 3-10 parts of compatilizer. The dynamic vulcanization material not only has the performance of NBR after vulcanization, but also has the elasticity of an elastomer, can be recycled, is halogen-free, environment-friendly, good in dyeing property, excellent in slip resistance, wear resistance, fatigue resistance and weather resistance, and still has excellent performance after foaming.

A process for making a grafted polyolefin having improved yellowness properties, the process comprising reacting a blend of: (i) at least one polyolefin; (ii) at least one monomer; wherein the at least one monomer is selected from one or more acid compounds having the following general chemical formula (I) or formula (II): wherein in formula (I) and formula (II), R1 or R2 is H, with the proviso that neither R1 nor R2 is H; wherein at least one of R1 and R2 is an alkyl or alkenyl group having 1 to 20 carbon atoms; and wherein R1, R2, or both R1 and R2 can further comprise an ester, a heteroatom, an aryl group, or a halogen; and (iii) at least one radical initiator to form a grafted polyolefin; wherein the grafted polyolefin has lt; and the yellowness index YIE313 of the product is 30. # imgabs0 #

The present invention provides a high-resolution and high-illuminance machine vision system and a manufacturing method thereof. In the optical system of the lens, a front lens group A, a stop, a rear lens group B, and a flat protective glass are sequentially arranged along the incident direction of light from left to right. The front lens group A includes a crescent lens A1 with positive focal power, a crescent lens A2 with positive focal power, and a crescent lens A3 with negative focal power, which are sequentially arranged. The rear lens group B includes a biconcave lens B1 with negative focal power, a crescent lens B2 with positive focal power, a biconvex lens B3 with positive focal power, and a crescent lens B4 with positive focal power. The front lens group A of the optical system has negative focal power, and the rear lens group B has positive focal power. The structure is simple, beautiful, high resolution, and extremely high illumination.

A method for preparing colored radiant cooling wood is disclosed. The purpose of this invention is to solve the application problems of existing microstructured colored radiant coolers, such as difficulty in preparation, high production costs, and lack of environmental friendliness. The preparation method includes: 1. Immersing dried wood in a lignin removal solution under vacuum conditions, followed by a water bath reaction at 75–80°C; 2. Dispersing fluorescent dye in an organic solvent, mixing it with methyl methacrylate monomer, adding the initiator azobisisobutyronitrile (AIBN), and prepolymerizing at 70–90°C; 3. Permeating the delignified wood into a prepolymerized dye / MMA mixed solution under vacuum; 4. Heating and polymerizing at 70–90°C. The delignified wood used in this invention is green and environmentally friendly. While maintaining excellent mechanical strength, the shape and size of the colored radiant cooler can be rationally set according to the needs of different scenarios, taking into account both flexibility and toughness, and is cost-effective.

The invention relates to the technical field of textile processing coloring, and discloses a textile fabric coloring device for textile production, which comprises a dip dyeing container, a pretreatment device is arranged on one side of the dip dyeing container, a discharging device is arranged on the other side of the dip dyeing container, and a plurality of uniformly arranged steering units I are hoisted above an upper opening of the dip dyeing container; the bottom in the dip dyeing container is flexibly connected with a plurality of second steering units which are correspondingly arranged in a staggered mode with the first steering units, and the textile fabric is cleaned through the pretreatment device under the action of the winding device. The first steering unit is hung above the upper opening of the dip dyeing container, and the second steering unit is connected with the inner bottom of the dip dyeing container in a flexible connection mode, so that the textile fabric can swing along with pulling of the winding equipment and airflow disturbance of the aeration device after being sequentially inserted between the first steering unit and the second steering unit; and the internal stress and the tension of the textile fabric in the swinging process are gradually eliminated.

The invention belongs to the technical field of plastic recovery, and discloses a method for cleaning and deodorizing polyolefin resin after consumption. The method comprises the steps of normal-temperature abrasive cleaning, microwave cleaning and the like, a specific abrasive cleaning agent and a specific microwave frequency are supplemented, the appearance performance of the polyolefin resin fragments after consumption can be improved, the unpleasant odor of the polyolefin resin fragments can be reduced, the material of the fragments is not affected, and the cleaned fragments have good mechanical properties and are beneficial to subsequent processing and utilization.

The utility model relates to the technical field of textile processing, and discloses a textile processing fabric coloring device which comprises a coloring box, a filter box is fixedly installed at the top of the coloring box, a conveying assembly is arranged on one side of the coloring box, and one end of the conveying assembly extends into the filter box; a filtering box is detachably connected to the interior of the filtering box, arc-shaped plates are fixedly installed on the two sides of the filtering box, and threaded rods are installed at the tops of the arc-shaped plates in a penetrating mode through threads; sliding rods are fixedly installed on the two sides of the inner wall of the filter box, threaded grooves are formed in the outer side walls of the sliding rods, the threaded rods are in threaded connection with the threaded grooves, dye in the coloring box is conveyed into the filter box to be filtered through the threaded rods, the threaded grooves, the arc-shaped plates, the sliding rods and the conveying assembly, and the filtered dye enters the coloring box again from a flow guide pipe to be circulated. The threaded rod is rotated to be separated from the threaded groove, the arc-shaped plate slides to one side of the inner wall of the filter box through the sliding rod, the filter box is taken upwards to be disassembled, and therefore the thread ends in the filter box can be cleaned conveniently.

The invention relates to a double-agent hair dye and a use method thereof. The hair dye takes a melanin precursor as a dye intermediate, the double-agent type hair dye comprises an agent I and an agent II, and the agent I comprises the melanin precursor and an aqueous medium; the agent II comprises an alkaline agent and an aqueous medium, and the pH value of the agent II is 8-14; the double-agent hair dye further comprises a surfactant and a thickening agent, and the surfactant and the thickening agent at least exist in the agent I. According to the double-agent type hair dye, the alkaline agent and the dye intermediate mainly playing a hair dyeing role are divided into two agents, the agent I containing the dye intermediate is firstly used in the hair dyeing process, then the agent II containing the alkaline agent is used, and compared with a single-agent type hair dye, the double-agent type hair dye has the advantages that the coloring effect is better, the dyeing uniformity is better, and the product is easy to store.

The present invention discloses a PVC single leather with improved heat resistance and a preparation process. The raw materials of the PVC single leather with improved heat resistance include: PVC resin powder, compound plasticizer, compound stabilizer, silicate needle fiber, organic wollastonite and nano-mixed titanium oxide. The preparation process includes the following steps: (1) uniformly mixing the PVC resin powder, compound stabilizer and wollastonite needle fiber in a dry powder state; (2) adding the compound plasticizer to the mixed dry powder of step (1), stirring until the compound plasticizer is absorbed by the mixed dry powder to obtain a mixture; (3) pouring the mixture into an internal mixer, adding organic wollastonite and nano-mixed titanium oxide to the internal mixer, and internally mixing to obtain a clinker, which is refined in an open mill and then calendered to form a semi-finished product; (4) surface treating the calendered semi-finished product and then baking it. The present invention improves the stability and heat resistance of the product by formula optimization.

Provided is a thermoplastic resin composition comprising 100 parts by weight of a base resin comprising (A) 10 to 15 wt% of an acrylic rubber-modified graft copolymer, (B) 10 to 30 wt% of a silicone-acrylate composite rubber-modified graft copolymer, and (C) 60 to 80 wt% of a polyalkyl (meth) acrylate resin, and (D) 0.5-3 parts by weight of a siloxane-modified polyester relative to the base resin. (E) 0.1 to 1 part by weight of an anthraquinone dye; and (F) 0.1 to 1 part by weight of a radical scavenger having a weight average molecular weight of greater than or equal to 2,000 g / mol.

The invention belongs to the technical field of food fermentation industry, and particularly relates to a yeast composition for improving the fermentation and gas retention capacity of low-sugar dough and preparation and application of the yeast composition. The yeast composition comprises the following components in parts by weight: 420-480 parts of low-sugar active dry yeast, 1-10 parts of amylase, 5-20 parts of an oxidant, 1-5 parts of a stabilizer and 10-80 parts of filler. According to the yeast composition for improving the fermentation gas-retaining capacity of the low-sugar dough, the gas-retaining capacity of the low-sugar dough in the fermentation process is improved, the dryness and smoothness of the low-sugar dough are improved, the stability of the low-sugar dough is improved, meanwhile, the size of a low-sugar bread finished product obtained after the low-sugar dough is baked is increased, and the taste of the low-sugar bread finished product is improved. And the coloring effect of the low-sugar bread finished product is improved.

The invention relates to an oxford fabric with high color fastness and a preparation method thereof, and belongs to the technical field of textiles. Comprising the following raw materials in parts by mass: 55-68 parts of PTT fibers, 25-30 parts of bamboo charcoal fibers, 15-18 parts of silk fibers, 5-6 parts of sodium sulfate, 0.3-0.5 part of sodium carbonate and 0.6-1.3 parts of a composite functional agent, the preparation method comprises the following steps: firstly, preparing short fibers from PTT fibers, bamboo charcoal fibers and silk fibers, weaving the short fibers into an oxford spinning blank after spinning, spooling, twisting, scaling, warping and denting, and then dyeing, fixing and drying the oxford spinning blank to obtain the high-color-fastness oxford fabric. The prepared oxford fabric is soft, comfortable, high in toughness, bright in color and luster and good in color fixing effect, has good absorptivity on ultraviolet light, has an antibacterial effect and can be widely applied to the fields of clothes and home textiles.

This invention provides a hair dyeing device based on an immersion mechanism, comprising a dyeing section, a liquid storage section, and a pumping section. The pumping section pumps the hair dye paste from the liquid storage section to the dyeing section. The dyeing section includes a front outer shell and a front upper cover arranged in a relatively open and closed manner. The front end of the front outer shell has a discharge structure communicating with the liquid storage section. A vibration mechanism is installed inside the immersion chamber. The discharge structure forms an immersion chamber with the front upper cover. During hair dyeing, the hair section is located in the immersion chamber and comes into contact with the hair dye paste inside. The vibration mechanism immerses the hair section in the hair dye paste through vibration. This invention, by forming an immersion chamber in the dyeing section, ensures that the hair section is completely enveloped and immersed in the hair dye paste. Simultaneously, the built-in vibration mechanism drives the hair dye paste to fully mix and contact with the hair section, effectively avoiding the problem of uneven distribution of hair dye paste among the hair strands, significantly improving color uniformity and coloring effect, and enabling scientific control of the amount of hair dye paste used, avoiding waste.

The invention relates to a printed cloth dye and a dye manufacturing process thereof, and belongs to the technical field of textile dyes. The printed cloth dye comprises the following main components: vegetable dye, soybean curb residue powder and vegetable gum. Lithospermum erythrorhizon is used as a raw material and is subjected to crushing, enzymolysis, membrane separation and purification and concentration to obtain the plant dye, and the quality of the plant dye is improved by adopting membrane separation and purification; the soybean curb residues are dried in the sun and then ground to obtain soybean curb residue powder which is rich in protein and can improve the color fastness of the fabric; active groups of the vegetable gum, the vegetable dye and the fibers are subjected to a cross-linking reaction, a film is formed on the surface of the fiber layer, and the pigment is fixed on the fiber layer. Therefore, the green, natural and easy-to-color printed cloth dye can be prepared according to the formula.

The invention provides a slow expansion type putty water stop strip and a preparation method thereof, and relates to the field of water stop materials. Comprising the following raw materials: chlorinated polyethylene, natural rubber, a plasticizer, coumarone resin, calcium stearate, water-absorbent resin, bentonite and carbon black. The preparation method comprises the following steps: putting the chlorinated polyethylene, the coumarone resin, the calcium stearate, the carbon black and the water-absorbent resin into a container, and uniformly stirring; adding a plasticizer into the container, uniformly stirring and clustering, taking out, and standing for 6-12 hours to obtain a mixture A; natural rubber is added into the internal mixer, internal mixing is conducted for 8-10 min, and the natural rubber is taken out for use; putting the internally mixed natural rubber and the mixture A into an internal mixer, and internally mixing for 3-5 minutes; and adding bentonite, internally mixing for 3-5 minutes, discharging, standing for 12-24 hours, adding into the internal mixer, internally mixing for 2-5 minutes, discharging, and carrying out extrusion molding on the rubber material subjected to secondary internal mixing. By increasing the strength and viscosity of the special composite rubber, the water-absorbent resin and the bentonite are effectively wrapped and bound, the water absorption speed of the water-stop strip can be effectively reduced, and the expansion time can be prolonged.

The invention relates to the technical field of dyeing, and particularly discloses a superfine polyester yarn coloring method. A superfine polyester yarn coloring method comprises the following steps that superfine polyester yarn is soaked in pretreatment liquid to be pretreated, taken out and dried; the preparation method comprises the following steps: dissolving sodium lignosulphonate into deionized water, then adding a dye, and grinding and dispersing to obtain a dye body; the method comprises the following steps: adding sodium lignosulphonate and a dye body into deionized water, introducing nitrogen, heating, adding azobis (2-aminopropylamidine) hydrochloride, then slowly adding a mixture of methyl methacrylate and n-butyl acrylate, stirring for reaction, and cooling to obtain a treated dye; immersing the pretreated polyester yarns in a dye solution for dyeing to obtain dyed polyester yarns; wherein the dye liquid comprises the following raw materials: deionized water, a dispersing agent, a cosolvent, a stabilizer, a pH regulator, a treatment dye, a plasticizer, a softening agent, a defoaming agent and a leveling agent; the dyed polyester yarn is immersed in a color fixing agent solution for aftertreatment, and the dyed polyester yarn is obtained.

This invention discloses a high near-infrared reflectance yellow inorganic pigment, its preparation method, and its application, belonging to the field of inorganic pigment technology. The invention uses La, Y, and Cr sources as raw materials, and formulates them according to stoichiometric ratios. A LaY pigment with a perovskite structure is synthesized via a sol-gel method. 1‑X Cr X O3 (0)