53results about How to "Avoid yellowing" patented technology

The invention relates to a decolorizing method of waste colored polyester textiles. The decolorizing method comprises the following steps: A, adding an organic solvent of which the solubility parameter is similar to that of polyester into a reducing agent solution to serve as a mixed decolorizing solvent; b, the waste colored polyester textiles are soaked in the mixed decolorizing solvent, solid-liquid separation is performed after decolorizing treatment, and decolorized polyester textiles and a primary decolorizing solvent are obtained; c, soaking the colored waste polyester textile into a primary decoloring solvent, and performing solid-liquid separation after decoloring treatment to obtain a decolored polyester textile and a secondary decoloring solvent; d, repeating the step C until the waste colored polyester textiles are difficult to decolorize, and at the moment, obtaining a deep-color decolorizing solvent which is repeatedly decolorized; e, drying the decolored textile to obtain a regenerated white polyester textile; and F, distilling the repeatedly decolored deep-color decoloring solvent, rectifying, and recovering to obtain the regenerated decoloring solvent. The problems of high energy consumption, low efficiency and the like of an existing decolorization process system can be solved.

The invention belongs to the technical field of medicines, and provides a calcium zinc gluconate oral solution and a preparation method thereof. According to the invention, the sugar alcohol chelating agent is added into the calcium zinc gluconate oral solution, so that the effects of chelating and surface activity can be exerted at the same time, and the higher absorption and mobility of sugar alcohol can be utilized to drive calcium and zinc elements to be better absorbed. Preferably, sorbitol can form a sorbitol calcium ion chelate and a sorbitol zinc ion chelate with calcium ions in calcium gluconate and zinc ions in zinc gluconate, so that the stability and water solubility of the sorbitol calcium ion chelate and the sorbitol zinc ion chelate are improved, and precipitation of grape calcium carbonate and zinc gluconate is avoided; further, the solubility and the stability of the calcium gluconate and the zinc gluconate in the solution are improved. In addition, after the sorbitol is added, the low-temperature (2-8 DEG C) precipitation of the calcium gluconate is greatly improved. In addition, sorbitol has a fresh and sweet taste, so that the calcium zinc gluconate oral liquid has a good taste.

This invention relates to the field of polymer material synthesis technology, specifically to a modified PVB resin and its preparation method. The invention introduces a fluorinated acetal monoaldehyde derivative containing fluorine into the PVB resin. This derivative is mixed with n-butyraldehyde and glyoxal, thereby undergoing an acetalization reaction with the 1,3-o-diol structure of the PVB molecular chain, incorporating the fluorinated side link into the PVB molecular chain. Utilizing the high electronegativity and high C-F bond energy of fluorine atoms, it shields against the intrusion of external corrosive media, inhibits oxidative yellowing, and improves weather resistance. Furthermore, the invention introduces glyoxal as a crosslinking agent, containing dialdehyde groups, which can react between adjacent polyvinyl alcohol segments, causing slight crosslinking between the originally linear PVB resin segments, improving the resin's shielding performance, further reducing the intrusion of external corrosive media, and enhancing the stability of the PVB resin.

The application discloses a fabric yellowing reagent and a fabric yellowing method, and relates to the technical field of daily chemical products. 5 The fabric yellowing reagent comprises 1-3% of histidine solution and a bacterial suspension with a bacterial concentration of 1*10 5 CFU / mL-9*10 The bacteria are a mixture of one or more of Staphylococcus epidermidis and Micrococcus luteus; the solvent of the histidine solution is normal saline containing 0.15-1% of trypsin peptone; and the solvent of the bacterial suspension is normal saline containing 0.1-0.2% of trypsin soybean peptone liquid culture medium. The fabric yellowing reagent can be used for simulating fabric yellowing, and has good operability, reproducibility and data reliability.

The invention provides a pharmaceutical composition of sodium ferrous citrate and a preparation method of the pharmaceutical composition, and belongs to the field of medicines. The pharmaceutical composition of the sodium ferrous citrate comprises the following components in percentage by mass: 70-95% of the sodium ferrous citrate, 1-30% of a filling agent, 1-10% of an adhesive and 1-10% of a lubricating agent, the filling agent comprises one or more of microcrystalline cellulose, calcium bicarbonate, lactose, mannitol, calcium hydrophosphate and corn starch. By adjusting the composition and proportion of the filling agent, the adhesive and the lubricant, the character of the product is improved, the sticking problem in the tabletting process is solved, the texture performance of the product is improved, the stability of ferrous iron in the pharmaceutical composition is improved, the friability is reduced, the bioavailability is improved, and the sodium ferrous citrate tablet is still smooth in surface after being stored for a long time, and has a good application prospect. The stability is excellent.

This invention discloses a dual-mode synergistic composite photocatalyst, its preparation method, and its application in styrene-acrylic emulsion coating compositions, belonging to the field of architectural coating technology. The dual-mode synergistic composite photocatalyst possesses a TiO2@dense SiO2@mesoporous SiO2-MnO2-GQDs three-layer core-shell structure. The styrene-acrylic emulsion coating provided by this invention utilizes the aforementioned dual-mode synergistic composite photocatalyst, and innovatively employs a yellowing-resistant composition composed of hollow titanium dioxide-supported phenyltriazole particles, a sulfonic acid-grafted hindered amine light stabilizer, and nano-zinc oxide. This composition synergistically inhibits yellowing of the paint film through enhanced UV absorption and improved interfacial compatibility. The styrene-acrylic emulsion coating provided by this invention successfully solves the two major problems of traditional photocatalytic coatings: "purification depends on light" and "self-catalysis leads to yellowing of the paint film." It can efficiently degrade formaldehyde under both light and dark conditions and exhibits excellent yellowing resistance.

The invention provides a TPU (thermoplastic polyurethane) sole surface treating agent. The TPU sole surface treating agent comprises 30-50 parts of a component A, 5-10 parts of a component B, 8-12 parts of a component C, 3-8 parts of a component D and 10-20 parts of a solvent, the component A comprises 20-40 parts of hydrogenated castor oil, 3-5 parts of nano titanium dioxide, 2-4 parts of glass beads, 0.5-1.5 parts of sericite, 1-2 parts of a coupling agent and 2-5 parts of an isocyanate bridging agent; the components are prepared from the following components in parts by weight: 5 to 10 parts of vinyl trimethoxy silane, 2 to 5 parts of polycarbodiimide, 1 to 3 parts of 4-tert-butylcatechol and 1 to 4 parts of azodiformate; the component C is prepared from 1 to 3 parts of carbon nanotubes, 2 to 5 parts of silver nitrate, 0.5 to 1.5 parts of sodium alginate and 10 to 30 parts of ethanol; the component D is camellia oil composite modified waterborne polyurethane; the solvent is low-molecular-weight organic dicarboxylic acid. The TPU sole is subjected to surface treatment by the surface treating agent, so that the coloring performance, oxidation resistance, hydrolysis resistance, hydrophobicity, antibacterial and mildew-proof performance and the like of the TPU sole are remarkably improved.

The present invention provides a bisphenol A type high molecular weight polycarbonate polyether polyol and a production process thereof, and relates to the field of chemical and chemical engineering technology. The production process is carried out in an integrated tubular reaction device, including mixing the raw materials in a premixing unit at one time and then entering the reaction pipeline; during the polymerization reaction, the flow directions of the material and the gas are opposite, ensuring that a sufficient amount of CO2 participates in the material movement process, and CO2 gas with a higher pressure is introduced when the temperature rises sharply. Through the above-mentioned control process and the special reaction device, sufficient gas-liquid heat conduction and gas-liquid-solid mixing are achieved, solving the problem of too low ester content of the product caused by the one-step preparation process. The obtained product has a stable molecular weight, a narrow molecular weight distribution, a high ester content, is not easy to produce explosion polymerization, has no amplification effect, and can be industrialized and mass-produced.

This application discloses a method for synthesizing polyethylene (2,5-furandicarboxylate), comprising the following steps: mixing 2,5-furandicarboxylic acid and ethylene glycol in a molar ratio of 1:2, adding zinc acetate as an esterification catalyst, and carrying out an esterification reaction at 195°C and a pressure not exceeding 0.3 MPa until the water content reaches 98% of the theoretical amount; adding antimony trioxide as a polymerization catalyst and triphenyl phosphate as a stabilizer to the esterification product, and reacting for 1 hour at a low vacuum of 800-1000 Pa and a temperature of 215°C to carry out pre-condensation; and carrying out a condensation reaction of the pre-condensation product at a high vacuum of less than 200 Pa and a temperature of 235°C until the torque reaches 4.2 A / 65 rpm to obtain polyethylene (2,5-furandicarboxylate). By reducing the amount of antimony trioxide to 0.045% and triphenyl phosphate to 0.1%, the amount of stabilizer was reduced, releasing catalyst activity. This shortened the polymerization time from 300 min to 230 min, reduced the color value b from 12-13 to 10, and improved the intrinsic viscosity to 0.507~0.517 dL / g. This achieved a reduction in production costs and heavy metal residues while improving the product's color.

The application discloses a kind of high weather-proof outer wall special-purpose inorganic stone gel and its preparation process and a kind of inorganic stone preparation process, the inorganic stone gel includes the following weight parts components: geopolymer precursor 35-50 parts;Sulfoaluminate clinker 25-45 parts;Alkali activator 15-17 parts;Nano titanium dioxide 1-4 parts;Hollow glass bead 2-8 parts;Basalt-PVA composite fiber 1.3-1.9 parts;Anti-alkali bleeding stabilizer 0.25-0.8 parts.The beneficial effects of the application are: carbonization resistance, yellowing resistance, long-term ultraviolet aging resistance, low water absorption, excellent impermeability, excellent freeze-thaw resistance, crack resistance and impact resistance, long weathering life, suitable for all scenarios, suitable for industrial production.

The invention relates to a synthetic method of bio-based poly (butylene succinate), which comprises the following steps: taking bio-based succinic acid and 1, 4-butanediol as polymeric monomers, and synthesizing the bio-based poly (butylene succinate) through esterification, pre-polycondensation and final polycondensation, during esterification, a compound catalyst is added; during final polycondensation, a stabilizer and a lubricant are added; the compound catalyst comprises a mixture of titanium organic ester, an antimony compound, silicon organic ester, hydroxycarboxylic acid and 1, 4-butanediol. According to the synthesis method provided by the invention, the hue of the product is greatly improved, meanwhile, the product with a relatively low melt index can be obtained, and the application range is relatively wide.

The invention discloses a polyurethane flame-retardant, yellowing-resistant and core-burning-resistant auxiliary agent which comprises the following components in percentage by weight: 30%-50% of a phosphorus-nitrogen flame retardant, 10%-20% of melamine cyanurate, 10%-20% of a hindered amine light stabilizer, 5%-10% of a benzotriazole ultraviolet light absorber, 5%-15% of inorganic metal oxide, 2%-8% of an antioxidant, 3%-8% of an oily dispersant and 2%-5% of a silane coupling agent. The auxiliary agent can be applied to various polyurethane products; a flame-retardant test shows that the limit oxygen index of the polyurethane foam added with the aid can be increased by 20-30% and reaches the self-extinguishing level; a yellowing-resistant test shows that the yellowing index is obviously reduced, and a relatively good appearance color can be kept; in a core burning resistance test under a simulated high-temperature environment, the internal temperature distribution of the material is more uniform, no core burning phenomenon occurs, and the comprehensive performance and the use safety of a polyurethane product are greatly improved.

The present invention provides a multilayer container, a method for producing the same, and a method for producing recycled polyester comprising a step of recovering polyester from the multilayer container. The multilayer container comprises a polyester layer comprising a polyester resin (X), and a polyamide layer comprising a polyamide resin (Y) and a yellowing inhibitor (A), wherein the content of the polyamide resin (Y) is 0.05 to 7.0% by mass relative to the total amount of all the polyamide layers and all the polyester layers, and the content of the yellowing inhibitor (A) is 1 to 30 ppm relative to the total amount of all the polyamide layers and all the polyester layers.

The application discloses a preparation method of hydrogenated aldehyde ketone resin without free formaldehyde, belongs to the technical field of aldehyde ketone resin synthesis, and aims to solve the technical problems of high free formaldehyde content, and further improved hydroxyl value stability and transparency in the hydrogenated aldehyde ketone resin in the prior art, and specifically comprises the following steps: under the protection of an inert gas atmosphere, phenylacetone, polyformaldehyde and a solvent are mixed and stirred, the reaction system is heated to 60-75 DEG C, and an inorganic alkali is added into the reaction system. The application is characterized in that the basic aldehyde ketone resin solution prepared by condensation of polyformaldehyde and phenylacetone in a water-free environment with a nickel catalyst is catalytically hydrogenated, not only the hydrogenated aldehyde ketone resin with stable hydroxyl value and extremely low colority is effectively obtained, but also the free formaldehyde content in the hydrogenated aldehyde ketone resin is effectively reduced, and the wide applicability of the hydrogenated aldehyde ketone resin in high-end coatings, adhesives and electronic materials is improved.

The utility model discloses a UV lamp bead structure with fluorescent agent component detection and white light supplement functions, which comprises a light distribution and color modulation assembly, an LED packaging support and a chip assembly, the light distribution and color modulation assembly is mounted at the upper end of the LED packaging support, the chip assembly is mounted inside the LED packaging support, the LED packaging support comprises a support shell, a deep cup opening and a bonding pad support, and the bonding pad support is mounted on the support shell. The deep cup opening is formed in the middle of the support shell, the bonding pad support is arranged in the support shell in an injection molding mode and comprises an anode bonding pad and a cathode bonding pad, the cathode bonding pad is installed at the lower end of the UV chip, and the upper end of the anode bonding pad is connected with the rear end of the gold wire. According to the utility model, by adopting the UV chip packaging structure, the light loss is effectively reduced, and the light attenuation is reduced; by dispensing the high-density fluorescent glue on the surface of the UV chip, yellowing of the lens and the glue after a long time is avoided; the deep cup opening in the LED packaging support is used for gathering light and increasing light intensity, and then the lens is used for gathering light, so that emitted light is more concentrated.

The utility model discloses a composite humidification filter screen piece and a humidifier. The composite humidification filter screen piece comprises a first humidification filter screen piece and a second humidification filter screen piece, the second humidifying filter screen piece is connected with the first humidifying filter screen piece, the second humidifying filter screen piece comprises a filtering base body and an adsorption piece, and the adsorption piece comprises an activated carbon piece, an ion exchange resin piece, a molecular sieve piece, a metal organic framework piece, a porous silica gel piece or a porous ceramic piece. When fluid flows through the second humidifying filter screen piece, the adsorption piece is suitable for adsorbing impurities to remove color. According to the composite humidification filter screen piece, the common humidification and impurity removal functions are achieved, pollutants causing yellowing and stinking of a water body in the water body can be removed, and the functions are rich. When the composite humidification filter screen piece is used for the humidifier, the problems of yellowing, stinking and the like of water stored in a water tank can be solved, and the use performance of the humidifier is improved.

The invention provides polyester resin for a weather-resistant anti-yellowing powder coating as well as a preparation method and application of the polyester resin. The polyester resin is prepared from the following raw materials: 30 to 35 percent of dihydric alcohol, 0.01 to 0.9 percent of esterification catalyst, 35 to 50 percent of aromatic polybasic acid, 10 to 20 percent of aliphatic dibasic acid, 0.5 to 2.5 percent of chain extender and 1 to 8 percent of acidolysis agent. The total amount of the raw materials is 100%. Compared with the prior art, the composition of the dihydric alcohol with hydrolysis resistance and different chain lengths and steric hindrances and the raw materials has a synergistic effect on improving the weather resistance and yellowing resistance of the polyester resin, and yellowing and aging of the prepared polyester resin after long-time use under severe conditions can be effectively avoided. Besides, due to the long straight chain structures of hexanediol and adipic acid, the flexibility, proper viscosity and excellent impact resistance of the molecular chain of the polyester resin can be improved, and the introduction of aromatic rings in the synthesis of the polyester resin is reduced, so that the yellowing of the polyester resin caused by the aromatic ring structure is effectively avoided.

The invention provides heat-resistant high-transmittance silk-screen printing ink and application thereof. The ink comprises benzene-ring-free epoxy resin, an anhydride curing agent, an accelerant, filler and a solvent, wherein the molar ratio of epoxy groups in the benzene-ring-free epoxy resin to anhydride groups in the anhydride curing agent is 1: (1-0.4). Therefore, the ink has excellent UV resistance and heat resistance, and is good in silk screen and high in light transmittance.

The utility model discloses a high beam light guide piece, installation structure and car lamp, including light guide piece body, light guide piece body is made of silica gel material integral injection moulding, light guide piece body includes the light entrance portion that is provided at one end, light guide piece body other end is provided with the light exit portion, light guide portion is provided between light entrance portion and light exit portion, light guide portion is columnar silica gel rod, the silica gel rod is cylindrical silica gel rod, the silica gel rod is cylindrical silica gel rod, the silica gel rod is cylindrical silica gel rod, and the silica gel rod is cylindrical silica gel rod. The light inlet portion comprises a funnel-shaped cavity located at one end of the light guide portion, the cavity bottom of the funnel-shaped cavity is fixedly connected with a protruding light inlet protrusion, the light guide piece body of the high-distance light guide piece is integrally formed by the silica gel material in an injection molding mode, the silica gel material has good flexibility and formability, the light guide piece has a proper refractive index, and therefore the light guide piece body is not prone to falling off. Light rays can be effectively guided to be transmitted inside, light loss is reduced, yellowing or aging is avoided, meanwhile, the silica gel can be rapidly made into a light guide piece of a proper size through injection molding, ejection and other forming methods, large-scale production can be achieved, efficiency is improved, and cost is reduced.

The invention discloses a waste plastic regeneration process. The waste plastic regeneration process comprises the following steps: 1) crushing treatment: crushing waste plastic into plastic particles; (2) cleaning treatment is conducted, specifically, the plastic particles are preliminarily cleaned with clear water, stirring is kept in the cleaning process, the sinking plastic particles are collected after cleaning is completed, and the sinking plastic particles are further cleaned with a composite cleaning agent; 3) bleaching treatment: washing the cleaned plastic particles with clear water, and then putting the washed plastic particles into a bleaching pool for bleaching treatment, wherein ultrasonic assistance is adopted in the bleaching treatment process; and 4) air-drying the bleached plastic particles, soaking the plastic particles in plant vinegar, adding a proper amount of nano microcrystalline cellulose into the air-dried plastic particles, uniformly stirring, and granulating. The prepared plastic particle product is not prone to yellowing and stable in color, and the mechanical property is well improved.

The present application relates to the field of plastic processing, and specifically discloses a yellowing-resistant and highly transparent aliphatic polycaprolactone TPU and a preparation method thereof; a yellowing-resistant and highly transparent aliphatic polycaprolactone TPU, comprising the following raw materials in parts by weight: 10-20 parts of polyether polyol, 50-65 parts of polycaprolactone polyol, 60-80 parts of isocyanate, 5-12 parts of chain extender, 5-12 parts of filler, and 0.5-1 part of antioxidant; the filler is composed of an ultraviolet absorber, boron nitride nanosheets, and single crystal alumina in a weight ratio of 1:1-2:2-4; the preparation method thereof is: weighing the filler and the polycaprolactone polyol, mixing them evenly, then adding the polyether polyol and continuing to mix, and after mixing evenly, obtaining a primary mixture; weighing the isocyanate, the chain extender, and the antioxidant and adding them to the primary mixture, mixing and stirring evenly to obtain a mixture; the mixture is melt-extruded to obtain a finished product; and the product has the advantages of good yellowing resistance and high transparency.

This utility model discloses an acrylic resin liquid filling device, relating to the field of acrylic resin liquid filling. It includes a placement box, a delivery pipe, a delivery pump, a container, an air blowing mechanism, and an air supply mechanism. The delivery pipe is fixedly connected to the upper left end of the placement box, and the delivery pump is fixedly connected to the delivery port of the delivery pipe. A container is fixedly connected to the bottom left end of the delivery pipe, and an air blowing mechanism is provided on the left side of the container. An air supply mechanism is fixedly connected to the top of the placement box. The air blowing mechanism uses two sets of nozzles to deliver external hot air to the outer wall of the delivery pipe, maintaining a suitable working temperature for the acrylic resin liquid and preventing the acrylic resin liquid from experiencing a decrease in flow rate due to low temperature, incomplete filling, or equipment overload. The air supply mechanism delivers nitrogen gas into the placement box, replacing the air at the top of the box to create an oxygen-free environment, preventing the acrylic resin liquid from increasing in viscosity and turning yellow.

The invention relates to an ultraviolet-blue light absorbent as well as a preparation method and application thereof, the absorbent provided by the invention has strong absorption performance in ultraviolet and blue light regions, is good in high temperature resistance and weather resistance, can absorb high-energy ultraviolet light and blue light in protective films of glasses, mobile phones, televisions and the like, and plays a role in protecting eyesight. Meanwhile, the ultraviolet-blue light absorbent is simple in preparation method, short in production period and high in practicability, and is an environment-friendly absorbent with excellent application performance.

The application relates to the technical field of compound fertilizer, and particularly discloses a special fertilizer for wormwood and a preparation method thereof. The special fertilizer comprises the following components: 500-600 parts of straw humic organic fertilizer, 60-100 parts of humic acid, 30-50 parts of amino acid raw powder, 40-50 parts of ammonium sulfate, 80-90 parts of monoammonium phosphate, 60-65 parts of potassium sulfate, 10-20 parts of calcium carbonate, 10-15 parts of magnesium sulfate, 1-3 parts of boric acid, 1-5 parts of ferrous sulfate, 1-5 parts of manganese sulfate and 30-35 parts of bio-based polyurethane. The bio-based polyurethane coating agent is prepared by using bio-based PDI and castor oil-based polyol as raw materials, and by adopting a chain extension agent and a grafting monomer for chain extension, and the special fertilizer after coating treatment can effectively solve the shortcomings of easy caking and inconvenient storage, and can realize accurate supply of nutrients through slight slow release. Meanwhile, the bio-based coating can be naturally degraded, has no soil residue, does not damage soil structure, does not affect the quality of wormwood medicine, can improve the utilization rate of fertilizer nutrients, and can reduce nutrient loss.

The utility model discloses an automatic rolling equipment for tea processing belongs to tea rolling equipment technical field. A kind of automatic rolling equipment for tea processing, including rack and the equal-distance arrangement of connecting rod assembly on rack annular, connecting rod assembly is fixedly installed with mounting ring, adjusting assembly is provided on mounting ring, adjusting assembly is fixedly installed with bucket cover, the rolling disc is fixedly installed on the rack, the heat dissipation cylinder is fixedly installed on the mounting ring, heat dissipation cylinder is provided with rolling cylinder, and heat dissipation zone is formed between rolling cylinder and heat dissipation cylinder, and spiral air deflector is provided in heat dissipation zone, and connecting hole is formed in air deflector, and air inlet hole of annular arrangement is formed on heat dissipation cylinder, and air inlet hole is communicated with heat dissipation zone;The utility model uses heat dissipation cylinder and air deflector cooperation to guide the air outside equipment to heat dissipation cylinder and make flowing air downward to tea, to reduce tea temperature, avoid tea temperature to rise and ferment in advance.

The present invention discloses a light guide plate, which has a light incident surface, a light emitting surface, a bottom surface opposite to the light emitting surface, and a first side surface opposite to the light incident surface. The light guide plate also has a through hole, a first port of the through hole is arranged on the light incident surface, and a second port of the through hole is arranged on the first side surface or the light emitting surface. The present invention also discloses a planar light source device using the light guide plate.

The application discloses a preparation method and application of high-performance key-use precipitated liquid silicone rubber base material and belongs to the field of preparation of precipitated silicone rubber. Vinyl-terminated polydimethylsiloxane, dihydric alcohol and a release agent are mixed and then kneaded to obtain a mixture; the vinyl-terminated polydimethylsiloxane, the mixture, high-hydroxyl-value hydroxyl silicone oil and precipitated white carbon black are put into a closed kneader, the kneading is started and the temperature is raised to 80-120 DEG C, the temperature is raised to 130-180 DEG C after the rubber material is densely kneaded into a lump, the constant-temperature kneading is carried out and vacuum kneading is carried out; the material is discharged after cooling, the prepared precipitated liquid silicone rubber base material has fluidity and a translucent appearance. The process is a two-step method for preparing the precipitated liquid silicone rubber base material, the yellowing problem of the base material is avoided, and the translucent base material can be stably prepared; the dispersion effect of the white carbon black in the base material is better, the structural degree is low and the viscosity change rate is small after six months of storage; the mechanical properties after vulcanization are excellent, and the base material can be applied to the field of keys.

The invention relates to the field of unsaturated resin compositions, and discloses an unsaturated resin composition for artificial stone and a preparation method thereof, the unsaturated resin composition comprises unsaturated resin, a modified additive, maleic anhydride and a curing agent; the unsaturated resin comprises unsaturated polyester and a polymerizable monomer, the unsaturated polyester is a polymerization product of polyacid and polyol, and the polymerizable monomer comprises a styrene monomer; the modified additive is prepared by grafting modified lignin and octadecyl trichlorosilane on the surface of nano titanium dioxide, and the modified lignin is prepared by carrying out grafting reaction on oxidized lignin, p-phenylenediamine and DOPO (9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide) and then further grafting with terephthalaldehyde, gamma-aminopropyltriethoxysilane and DOPO. The modified additive and maleic anhydride are added into the unsaturated resin-based material, so that the problems of appearance yellowing, water resistance and flame retardance of the material are solved, the defects of performance aging, mechanical property reduction and the like of the material are inhibited, and the service life of the artificial stone is effectively prolonged.

The visual storage bookcase comprises a bookcase body, a storage rack is fixedly installed on one side of the inner wall of the bookcase body, a moisture-proof pad is arranged on the top of the storage rack, a window shade is installed on one side of the inner wall of the bookcase body through a moving mechanism, a moving groove is formed in one side of the inner wall of the bookcase body, and the moving groove is communicated with the storage rack. A clamping plate is installed on one side of the inner wall of the moving groove through a clamping mechanism, and a hygrometer is fixedly installed on one side of the bookcase. The two clamping plates are moved to drive the two springs to move, the springs deform at the moment, after books are placed, the two clamping plates are loosened, the two springs reset to drive the two clamping plates to clamp the books, the books are fixed by the clamping plates at the moment, inclination and collapse are avoided, and the cleanliness of the bookcase is guaranteed; and meanwhile, manual bookcase arrangement is not needed any more, the labor cost is saved, and when sunny weather and sunshine are violent, the movable ring is moved to drive the window shade to move, and the window shade covers books.

The present application belongs to the technical field of detergent, and particularly relates to a green and environment-friendly multi-effect school uniform special dipping powder composition and application thereof. The green and environment-friendly multi-effect school uniform special dipping powder composition provided by the present application comprises the following components and mass percentages thereof: 30-60% of sodium percarbonate, 5-20% of anhydrous sodium metasilicate, 0.5-8% of non-ionic surfactant, 0.5-8% of zwitterionic surfactant, 0.5-5% of anionic surfactant, 0.2-0.5% of anti-redeposition agent, 0.2-1% of composite chelating agent, 0.6-4% of composite enzyme preparation, 0.05-8% of auxiliary agent, and the rest is sodium carbonate, and the sum of the mass percentages of the above components is 100%. The present application can be used without high-temperature dissolution of more than 60 DEG C or even 80 DEG C, can effectively protect the fabric, prevent the fabric from being damaged, and achieve the protection of the fabric while achieving the strong cleaning of stains, efficient whitening, dry deodorization and prevention of excessive cleaning.