1538 results about "Nanocrystalline titanium dioxide" patented technology

The invention belongs to the field of photovoltaic glass coatings, and particularly relates to a super-hydrophilic anti-reflection wear-resistant self-cleaning coating for room-temperature curing of photovoltaic glass, which takes nano silicon dioxide sol as a main film-forming agent to cure and form a film and comprises the following raw materials in parts by weight: 55-90 parts of deionized water, 9-20 parts of nano silicon dioxide sol, 1-10 parts of a silane coupling agent and 0.001-1 part of nano titanium dioxide. The coating is prepared from the following components in parts by weight: 0.01-1 part of a surfactant, 0.01-1 part of modified polyvinyl alcohol, 0.01-1 part of water-based acrylic resin, 0.001-1 part of an antistatic agent, 1-5 parts of a curing agent, 1-5 parts of a flatting agent and 0.1-1 part of a wear-resistant agent. The super-hydrophilic anti-reflection wear-resistant self-cleaning coating has super hydrophilicity, the water contact angle is below 10 degrees, the hydrophilicity, the antistatic property, the anti-reflection property, the wear resistance and other properties of glass can be remarkably improved, and when the super-hydrophilic anti-reflection wear-resistant self-cleaning coating is applied to photovoltaic module glass, the photoelectric conversion efficiency in photovoltaic power generation can be improved.

The invention relates to the field of membrane materials, and discloses an epoxy modified starch-based degradable membrane and a preparation method thereof, the epoxy modified starch-based degradable membrane comprises epoxidized starch, modified nanocellulose and a plasticizer; the modified nano cellulose is prepared by mixing a modified composite filler, a nano cellulose dispersion liquid and a zinc acetate dihydrate aqueous solution; the nano-cellulose dispersion liquid is prepared by adhering polytannic acid formed by oxidation and self-polymerization of tannic acid to the surface of nano-cellulose; the modified composite filler is prepared by performing carboxylation modification on nano titanium dioxide coated fumed silica nanoparticles by using succinic anhydride and gamma-aminopropyltriethoxysilane, then reacting with polyethyleneimine to obtain an aminated composite filler, and finally grafting glycidyl dodecyl dimethyl ammonium chloride to the surface of the aminated composite filler. The prepared film material is high in tensile strength, has certain hydrophobicity, and has good heat resistance, antibacterial property and flame retardant property.

The invention relates to the technical field of composite film preparation, in particular to a multi-layer co-extrusion nano ceramic coating high-barrier medicine packaging composite film and a preparation method thereof.The multi-layer co-extrusion nano ceramic coating high-barrier medicine packaging composite film comprises a base material layer, a gas barrier layer, a bonding transition layer and a nano ceramic functional coating; the base material layer comprises the following components in parts by mass: 80-100 parts of biaxially oriented polypropylene; 20 to 30 parts of metallocene linear low density polyethylene; 5 to 8 parts of nano titanium dioxide; 0.5 to 1 part of beta-(3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid; and 0.3 to 0.6 part of calcium stearate. Through the multi-layer co-extrusion and gradient curing technology and the five-layer co-extrusion technology, it is ensured that the thickness of a base film is uniform and interlayer bonding is firm, the adhesive force of the coating is enhanced through plasma surface treatment, and activity retention and uniform distribution of functional components are guaranteed through the segmented curing strategy of the nano ceramic coating; compared with a traditional hot-pressing compounding or solvent coating process of the composite film, the energy consumption and the solvent residue risk are greatly reduced, meanwhile, the production efficiency and the product consistency are improved, and large-scale application is provided for medicine packaging.

The invention relates to the technical field of cables, and provides an ultraviolet-resistant photovoltaic cable which sequentially comprises a conductor, an insulating layer, a lining layer, a shielding layer and an outer sheath from inside to outside, and the outer sheath is prepared from the following raw materials in parts by weight: 35-45 parts of chloroprene rubber, 20-25 parts of ethylene propylene rubber, 25-35 parts of a flame retardant, 1-3 parts of a vulcanizing agent, 3-5 parts of an antioxidant, 0.8-1.2 parts of an ultraviolet absorbent, 3-5 parts of a lubricant and 15-25 parts of reinforcing filler; the reinforcing filler comprises lignin fibers and nano titanium dioxide, and the mass ratio of the lignin fibers to the nano titanium dioxide is (1: 5)-(5: 1). According to the technical scheme, the problems of poor mechanical property and ultraviolet resistance of the photovoltaic cable in the prior art are solved.

The invention discloses a flame-retardant high-temperature-resistant fiber and a preparation method thereof, and relates to the technical field of fibers. When the flame-retardant high-temperature-resistant fiber is prepared, 1, 6-hexamethylenediamine, 1, 6-adipic acid, tetrahydrodifuran [3, 4-B: 3 ', 4'-D] furantetraone and a phosphorus-sulfur composite flame retardant are copolymerized to generate a polyamide-polyamide acid solution; 4-aminopyridine and the polyamide-polyamide acid solution are subjected to a reaction, and modified polyamide is prepared; the modified polyamide is subjected to melt spinning, and polyamide fibers are prepared; the preparation method comprises the following steps: pretreating nano titanium dioxide by using 4-bromobutyl trimethoxy silane to prepare modified nano titanium dioxide; mixing the modified nano titanium dioxide and ethanol to prepare a light-resistant antibacterial finishing agent; and carrying out post-treatment on the polyamide fiber by using an anti-light antibacterial finishing agent to prepare the flame-retardant and high-temperature-resistant fiber. The prepared fiber is excellent in comprehensive performance, particularly outstanding in flame retardance and high temperature resistance, and suitable for the fields of special protective clothing, high-temperature filtering materials and the like.

The invention discloses a preparation method of an ultra-thin high-density fiberboard with ultra-low formaldehyde emission, which is characterized by comprising the following steps: peeling wood by using a peeling machine, chipping to obtain wood chips, washing the wood chips with water, cooking in a cooking cylinder, feeding into a defibrator, and adding molten paraffin for treatment to obtain fibers; meanwhile, formaldehyde is taken to be mixed with sodium bentonite, triethylene diamine and polyvinyl alcohol, then urea is added in five times, melamine is added in two times, a reaction is conducted, and melamine modified urea-formaldehyde resin is prepared; taking fibers, applying an adhesive formed by mixing melamine modified urea-formaldehyde resin, nano titanium dioxide and an ammonium chloride curing agent, drying and dehydrating the fibers uniformly mixed with the adhesive, sorting to remove micelles, fiber agglomerates and fiber bundles, and paving and forming to obtain a plate blank; and the plate blank is taken to be subjected to the hot pressing procedure to obtain a plate, and after the plate is cooled, the ultra-thin high-density fiberboard with the advantages of being high in strength, low in formaldehyde emission and the like is obtained after sanding.

The invention relates to a composite multi-effect scale and corrosion inhibitor and a preparation method thereof, and belongs to the technical field of water treatment agents.The composite multi-effect scale and corrosion inhibitor is prepared from carboxylic acid monomers, sulfonate monomers, organophosphorus compounds, modified chitosan, modified nanometer titania, oxidation type initiators, reduction type initiators, azole derivatives and the like, the modified chitosan is formed by coating the surface of chitosan with cerium chloride; the modified nano titanium dioxide is formed by coating the surface of nano titanium dioxide with sodium polyaspartate. The composite multi-effect scale and corrosion inhibitor is prepared in a mode of compounding while synthesizing, the scale inhibition effect is excellent, the comprehensive descaling capacity can reach 97% or above, and the composite multi-effect scale and corrosion inhibitor can be used for a high-pH, high-alkalinity, high-temperature and high-hardness circulating cooling water system under the high-concentration-multiple operation condition; the method is suitable for circulating cooling water treatment requirements under harsh conditions in industries such as chemical industry, smelting and light industry.

The invention discloses a PA6 nylon composite material for a high-temperature-resistant filter screen and a preparation method of the PA6 nylon composite material, and relates to the technical field of composite materials. The invention discloses a PA6 nylon composite material for a high-temperature-resistant filter screen. The nylon material is prepared from the following raw materials in parts by weight: 60 to 80 parts of modified PA6 nylon, 10 to 20 parts of modified glass fiber, 2 to 5 parts of montmorillonite, 0.3 to 0.8 part of antioxidant 1010, 0.2 to 0.6 part of stearic acid, 0.5 to 1.0 part of ethoxylated fatty amine, 1 to 3 parts of nano titanium dioxide, 1 to 3 parts of polytetrafluoroethylene micro powder, 3 to 8 parts of aluminum hydroxide, 0.5 to 1.5 parts of chitosan, 1 to 3 parts of hyperbranched polyamide and 0.5 to 1.5 parts of urea-formaldehyde resin coated epoxy resin microcapsules. And 0.3 to 0.8 part of sodium polyacrylate. The PA6 nylon composite material for the high-temperature-resistant filter screen has remarkable advantages. The material disclosed by the invention is high in mechanical property, good in thermal stability and stable in size at high temperature; the self-cleaning, antibacterial and antistatic functions are realized, and the filtering efficiency is high; chemical corrosion resistance, wear resistance and low water absorption are achieved; part of the raw materials can be recycled, the environmental protection concept is met, and the use requirement of the high-temperature-resistant filter screen in a complex environment can be met.

The invention discloses an environment-friendly cementing material capable of efficiently adsorbing formaldehyde and a preparation method of the environment-friendly cementing material, and relates to the technical field of formaldehyde adsorption materials, and the environment-friendly cementing material is prepared from the following raw materials in parts by weight: 30-50 parts of activated carbon powder, 10-20 parts of diatomite powder, 8-10 parts of metal organic framework powder, 12-18 parts of a natural gelatinizing agent, 1-2 parts of a plasticizer and 2-4 parts of nano titanium dioxide. The activated carbon powder has an extremely high specific surface area and can effectively adsorb formaldehyde molecules in air. The porous structure of the diatomite powder increases the adsorption capacity of the material, and improves the formaldehyde removal efficiency. The metal organic framework powder has a unique pore structure and chemical properties, and can specifically adsorb formaldehyde and other volatile organic compounds (VOCs). The environment-friendly cementing material has the advantages of being efficient in formaldehyde adsorption, environment-friendly, durable, multifunctional, easy to process, economical, practical and the like, and is an ideal indoor air purification material.

The invention relates to the technical field of high-barrier composite packaging films, and discloses a high-barrier composite packaging film with an antibacterial function, which sequentially comprises a base layer, a nano composite barrier layer, an antibacterial functional layer and an outer protective layer from bottom to top, and the layers are tightly attached through a coated starch-based adhesive. According to the high-barrier composite packaging film with the antibacterial function, the cellulose nanowhiskers have the characteristics of high strength and high modulus and are mixed with the bio-based polylactic acid, so that the tensile strength and tear resistance of the bio-based polylactic acid can be remarkably improved, and the structural stability of the packaging film in the using process is guaranteed; nano titanium dioxide and nano cellulose aerogel are arranged in the nano composite barrier layer, so that the barrier property of the packaging film on oxygen and ultraviolet rays can be enhanced, and the packaging film also has a certain antibacterial effect; in addition, the nanocellulose aerogel has a loose porous structure, so that gas molecules can be effectively prevented from passing through, and the barrier property is further improved.

The invention relates to the technical field of glass white board ink, and discloses high-gloss and high-covering ink for a glass white board and a preparation method thereof, the high-gloss and high-covering ink comprises the following raw materials by mass: 30-35 parts of pigment, 2-5 parts of composite diatomite, 8-10 parts of a dispersant, 3-7 parts of resin, 0.2-0.5 part of a wetting agent, 50-60 parts of deionized water, and 5-8 parts of propylene glycol. The nano titanium dioxide has high refractive index and light scattering performance, so that the ink can fully reflect light under illumination, and the nano titanium dioxide and the diatomite have a relatively good synergistic effect in the aspect of improving the glossiness of the ink; the lamellar structure of the graphene oxide can effectively cover the ground color of the glass white board, and a high covering effect is achieved; a hydrophilic chain segment of the amphiphilic block copolymer extends in an ink system, and a hydrophobic chain interacts with the lipophilic pigment, so that the stability and the covering effect of the ink are improved.

The invention relates to the technical field of antibacterial non-woven fabrics, and discloses an intrinsic antibacterial non-woven fabric and a preparation method thereof.The intrinsic antibacterial non-woven fabric is prepared by adopting a dip-coating method and by soaking a non-woven fabric in antibacterial slurry, taking out the non-woven fabric for drip drying and then drying the non-woven fabric to constant weight; wherein the antibacterial slurry is prepared by compounding antibacterial polyol with a synergistic antibacterial effect, nano titanium dioxide modified by a coupling functional phenolic hydroxyl Schiff base type antibacterial monomer and a branched antibacterial monomer. According to the intrinsic antibacterial non-woven fabric, the technical problems that in the prior art, an antibacterial agent is large in toxicity, prone to loss and insufficient in antibacterial spectrum coverage range are solved, and the intrinsic antibacterial non-woven fabric can also be applied to the field of filtering materials, the field of medical treatment and public health and the field of textile materials and has the beneficial technical effects of inhibiting bacterial growth and guaranteeing sanitation and safety.

The invention relates to the technical field of functional fabrics, and discloses a high-strength waterproof anti-ultraviolet fabric and a preparation method thereof.The fabric is obtained by dipping base cloth into a finishing agent, and the base cloth is obtained by blending and weaving polyester fibers and ultra-high molecular weight polyethylene fibers; the finishing agent is obtained by stirring and mixing deionized water, anti-ultraviolet modified titanium dioxide, a softening agent, an antistatic agent and polyurethane resin, the polyester fibers and the ultra-high molecular weight polyethylene fibers in the fabric have the characteristic of high strength, and nano titanium dioxide and an anti-ultraviolet absorbent in the anti-ultraviolet modified titanium dioxide have a synergistic effect, so that the fabric has excellent anti-ultraviolet performance; the polyurethane resin in the finishing agent and the silane-modified nano titanium dioxide have a synergistic effect, a uniform mechanical network is formed on the surface, the polyurethane resin and the silane-modified nano titanium dioxide complement each other, the dispersity is good, the compactness and the adhesiveness are good, and excellent durability and waterproof performance are achieved.

The invention discloses a coating as well as a preparation method and application thereof. The coating comprises the following raw materials: potassium silicate; ethyl orthosilicate; a nanometer titanium dioxide sol; rare earth is doped with nano titanium dioxide; compounding zinc oxide nanoparticles; nano silicon dioxide sol; a fluorosilane coupling agent; a fluorocarbon surfactant; a conductive carbon nanotube; nano aluminum oxide sol; an organic silicon modified acrylate emulsion; a boron nitride nanosheet; hollow glass beads; a shape memory polymer; the invention discloses a self-repairing nanofiber. After a coating is formed by using the coating, the coating has the characteristics of high light transmittance, good self-cleaning effect, high hardness, good adhesive force and excellent weather resistance, and can be applied to a photovoltaic module to replace an existing photovoltaic module coating product.

The invention relates to the technical field of insulating materials, in particular to insulating powder and a preparation method thereof. The invention discloses a flame-retardant coating which comprises the following components in parts by weight: 15-25 parts of epoxy resin, 10-20 parts of aluminum hydroxide, 5-12 parts of nano boron nitride, 1-3 parts of a silane coupling agent KH-560, 3-8 parts of polytetrafluoroethylene micro powder, 2-6 parts of fluorine-modified montmorillonite, 4-9 parts of melamine cyanurate, 2-5 parts of nano titanium dioxide, 1-4 parts of a fluorine-modified graphene oxide-polyaniline composite material and 0.5-2 parts of pentaerythritol stearate. The anti-corrosion coating is prepared from the following components in parts by weight: 1 to 3 parts of nano zinc oxide, 5 to 10 parts of glass fiber, 2 to 5 parts of polyhedral oligomeric silsesquioxane-polyimide copolymer, 1 to 4 parts of ferrocenyl epoxy resin and 0.5 to 2 parts of perfluorooctyltriethoxysilane. The insulation powder is high in corrosion resistance, excellent in insulation, heat dissipation and mechanical performance, environmentally friendly in processing, good in adaptability, capable of prolonging the service life of equipment and reducing the cost, suitable for special environments and wide in popularization prospect.

The invention relates to the technical field of material science and engineering, and discloses a nanocellulose-based oil-water separation and adsorption composite material, which is prepared from the following raw materials in parts by mass: 35 to 45 parts of nanocellulose; 8 to 11 parts of bagasse cellulose; 10 to 15 parts of sodium lignin sulfonate; 4 to 8 parts of chitosan; 5-10 parts of oxidized starch; 5 to 8 parts of cellulose nanowhiskers; 2-5 parts of silicon dioxide nanoparticles; 0.5 to 1 part of calcium carbonate nanoparticles; 1-2 parts of a citric acid cross-linking agent; 1-2 parts of graphene oxide; 0.3 to 0.6 part of ethylene diamine tetraacetic acid; 2-5 parts of glycerol; 0.4 to 1 part of stearoyl chloride; 2-4 parts of nano iron oxide; the preparation method comprises the following steps: pretreating the raw materials, mixing the pretreated raw materials into slurry, carrying out crosslinking and ultrasonic dispersion, standing to obtain a basic mixture, injecting the basic mixture into a mold, carrying out freeze drying to form a photocatalytic layer, carrying out centrifugal dewatering, carrying out chelation reaction, spraying a composite solution, and carrying out vacuum drying to obtain the photocatalytic material. The obtained composite material has the advantages of efficient adsorption capacity, good mechanical properties, environmental friendliness, degradability and low preparation cost.

The invention relates to the field of coatings, and discloses a solvent-resistant antirust anticorrosive biological resin coating and a preparation method thereof, the biological resin coating comprises modified bio-based epoxy resin, modified graphene oxide, modified nano titanium dioxide, a curing agent and a diluent; the modified bio-based epoxy resin is prepared by modifying epoxidized polysiloxane formed by self-polymerization of siloxane; the modified nano titanium dioxide is prepared by modifying a fluorine-containing group; the modified graphene oxide is prepared by grafting a flame-retardant modifier on the surface of graphene oxide, the flame-retardant modifier is prepared by reacting 3-amino-1, 2, 4-triazole with phosphonitrilic chloride trimer to prepare a flame-retardant intermediate, then grafting the flame-retardant intermediate and gamma-aminopropyltriethoxysilane by taking terephthalaldehyde as a bridging agent, and further reacting with DOPO (9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide). The prepared biological resin coating is high in adhesive force, high in pencil hardness and good in corrosion resistance, solvent resistance and flame retardant effect.

The invention relates to the field of waterproof sealing materials, and discloses a composite high-weather-resistance rubber waterstop which is composed of an outer layer, a middle layer and an inner layer. The outer layer contains 3%-8% of nano titanium dioxide, 2%-5% of nano zinc oxide, 50%-70% of a rubber matrix and 1%-3% of an ultraviolet light absorber, and the total proportion of the outer layer is 10%-20%. The middle layer is composed of 70%-85% of EPDM, 5%-10% of carbon fiber and 5%-10% of plasticizer, and the total proportion of the middle layer is 60%-75%. The inner layer is a dynamic covalent bond rubber material and contains 5%-10% of a vulcanizing agent and 1%-3% of an antioxidant, the rubber material accounts for 80%-90%, and the inner layer accounts for 15%-25% in total. Through a multi-layer composite structure, a dynamic covalent bond self-repairing material and an optimized vulcanization process, the comprehensive performance of the water-stop belt is remarkably improved, and particularly the durability and the service life of the water-stop belt in a long-term exposure environment are improved.

The invention discloses a preparation method of an organosilicon anticorrosive coating, and relates to the technical field of coatings. When the organic silicon anticorrosive coating is prepared, firstly, heptamethylcyclotetrasiloxane, N, N-dimethyl vinylamine and 4-(chloromethyl) phenylboronic acid pinacol ester are subjected to a reaction to prepare quaternized cyclotetrasiloxane, then the quaternized cyclotetrasiloxane, octamethylcyclotetrasiloxane and 1, 3-bis (3-aminopropyl) tetramethyldisiloxane are subjected to a reaction to prepare functionalized polysiloxane, and then the functionalized polysiloxane is subjected to a reaction to prepare the organic silicon anticorrosive coating. The preparation method comprises the following steps: reacting titanium dioxide nanosheets, aniline and (3-aminophenyl) phosphonic acid to prepare modified nano titanium dioxide, and finally mixing epoxy resin, functionalized polysiloxane, xylene, the modified nano titanium dioxide and a polyamide curing agent to prepare the organic silicon anticorrosive paint. The prepared organic silicon anticorrosive paint has excellent corrosion resistance, self-repairing performance, flame retardance and antibacterial performance.

The invention relates to the technical field of titanium dioxide, and discloses a preparation method of high-dispersity nano titanium dioxide and application of the high-dispersity nano titanium dioxide in paints.The nano titanium dioxide is modified through KH560, epoxy groups are introduced to the surface of the nano titanium dioxide, then the nano titanium dioxide and active imino groups of DOPO carboxyl phenolic resin are subjected to a ring-opening reaction, and the high-dispersity nano titanium dioxide is obtained. The hydrophilic carboxyl-containing phenolic resin is introduced to the surface of the nano titanium dioxide, so that the hydrophilicity of the nano titanium dioxide is remarkably improved, the dispersity of the nano titanium dioxide in water is improved, the nano titanium dioxide has good compatibility with acrylic resin, and the hardness and tensile property of the acrylic resin are improved. The phenolic resin grafted on the surface of the nano titanium dioxide has very high char forming property, contains DOPO flame-retardant groups, and can play a very good condensed phase flame-retardant role, so that the water-based paint has a very good flame-retardant effect.

The invention relates to the field of enzyme preparations, and discloses an enzyme preparation for catalytic degradation of bioplastics and a preparation method thereof, the enzyme preparation for catalytic degradation of bioplastics comprises the following components by weight: 25-50 parts of an enzyme, 1-8 parts of a catalytic additive, 2-10 parts of a stable dispersant, and 30-50 parts of a buffer solution; the catalytic additive is prepared by using calcium bentonite as a carrier to load nano titanium dioxide; the stabilizing dispersant is prepared by introducing polyethylene glycol monoallyl ether into a sodium lignin sulfonate structure by utilizing an initiator through an aqueous solution polymerization method, and by adding the catalytic additive and the stabilizing dispersant, the enzyme preparation is endowed with good degradation efficiency on bio-based plastics and the stability of an enzyme preparation system is improved.

The invention discloses a household nano self-cleaning material containing rare earth elements and a preparation method of the household nano self-cleaning material, and aims at solving the problems that a traditional self-cleaning material is narrow in light response range, single in function, poor in durability, non-environment-friendly in preparation process and the like. The material comprises 5-15 parts of rare earth oxide, 50-70 parts of nano titanium dioxide, 10-20 parts of mesoporous silica, 3-8 parts of a fluorinated modifier and 2-5 parts of a bio-based adhesive. Wherein the rare earth elements are doped in titanium dioxide crystal lattices, so that the forbidden band width is reduced, the photocatalytic response range is widened to visible light, and the photocatalytic efficiency is remarkably improved. The preparation method of the material comprises the steps of precursor preparation, hydrothermal reaction, fluorination modification and coating forming, a low-temperature hydrothermal method, supercritical CO2 modification and a photocuring technology are adopted, and the material has the functions of self-cleaning, antibiosis and VOCs degradation, is suitable for various base materials such as household building materials, textiles and electric appliance surfaces, meets the composite requirements of modern home for health and environmental protection, and has wide application prospects. And the preparation process is green and pollution-free, and conforms to the sustainable development concept.

The invention relates to the field of textile processing, and discloses a production process of an antistatic chinlon fabric, which comprises the following specific steps: performing blade coating on chinlon base cloth by using a modified waterborne polyurethane emulsion, and performing pre-drying and baking to obtain the antistatic chinlon fabric, the modified waterborne polyurethane emulsion comprises a waterborne polyurethane emulsion, a hybrid composite filler, a functional additive and the like; the hybrid composite filler is prepared by using a double-bond silane coupling agent to modify nano titanium dioxide and then reacting with modified graphene, and the modified graphene is prepared by using phenyl tri (dimethyl siloxane) silane, a flame-retardant additive and the double-bond silane coupling agent to react and then modifying hydrazine hydrate to reduce graphene oxide; the flame-retardant additive is prepared from phenylphosphoryl dichloride, eugenol, a flame-retardant primary product and sodium as raw materials, the flame-retardant primary product is prepared by reacting formaldehyde with p-hydroxyphenylethylamine and then further reacting with phosphorous acid, and the chinlon fabric prepared by the method not only has a conductive function, but also keeps the mechanical properties of the fabric and is excellent in flame retardance.

The invention relates to the field of drain pipes, and discloses an antibacterial polypropylene noise-reduction drain pipe and a preparation method thereof, the antibacterial polypropylene noise-reduction drain pipe comprises polypropylene, modified glass fiber, an antibacterial additive, a compatilizer and a stabilizer; the modified glass fiber is prepared by performing formylation modification on glass fiber by using 3-aminopropyltriethoxysilane and glutaraldehyde, grafting triethylene tetramine and DOPO into a glass fiber structure, and then grafting a hindered phenol antioxidant; the antibacterial additive is prepared by compounding chitosan Schiff base and modified nano titanium dioxide, the chitosan Schiff base is prepared by utilizing a Schiff base reaction between chitosan and vanillin, and the modified nano titanium dioxide is prepared by utilizing isocyanate propyl triethoxy silane and ethyl glycolate to modify nano titanium dioxide. By adding the modified glass fiber and the antibacterial additive, the pipe is endowed with excellent heat resistance, aging resistance, flame retardance and antibacterial performance.

The invention relates to the field of textile processing, and discloses a polyester knitted fabric flame-retardant finishing method, which is characterized in that modified waterborne polyurethane emulsion is finished on a washed and dried polyester knitted fabric by using a dipping and drying method; the modified waterborne polyurethane emulsion is prepared from isophorone diisocyanate, an amine chain extender, a flame-retardant cross-linking agent, modified nano titanium dioxide and the like, and the amine chain extender is prepared from 2-(2, 4-dihydroxyphenyl)-2H-benzotriazole and 2-chloro-4, 6-diamino-1, 3, 5-triazine through a reaction; the flame-retardant cross-linking agent is prepared from 1, 3, 5-tri (2-hydroxyethyl) cyanuric acid and dimethyl methylphosphonate through a reaction; the modified nano titanium dioxide is prepared from modified silane coupling agent modified nano titanium dioxide hybrid silica sol obtained by reaction of tetramethyldisiloxane and vinyltrimethoxysilane, so that the material is endowed with good flame retardant property, the ultraviolet protection property of the material is improved, and the mechanical property of the material is ensured.

The invention discloses a thermal insulation material with enhanced thermal insulation performance and a processing method, and relates to the technical field of thermal insulation material processing. Comprising the following components in parts by weight: 100 to 200 parts of a nanopore matrix material, 20 to 120 parts of expanded perlite, 10 to 350 parts of polystyrene, 30 to 300 parts of polyurethane, 100 to 500 parts of nano titanium dioxide, 10 to 60 parts of graphene, 10 to 40 parts of silica sol and 1 to 55 parts of ferric oxide. A multi-stage pore structure is constructed through a nanopore matrix and expanded perlite, closed-cell foam of polystyrene and polyurethane is combined, and nano titanium dioxide and graphene functional filler are matched, so that the heat conductivity coefficient is reduced to 0.018 W / (mK) or below, the heat insulation efficiency is remarkably improved, nanoscale homogenization is ensured through high-shear dispersion in the process, the porosity is reserved through freeze drying, and the heat insulation performance is greatly improved. The microcapsule self-repairing layer can repair more than 85% of cracks, the service life is greatly prolonged, and in the aspect of function integration, the material has A-level fireproof, waterproof and weather-proof characteristics and heat preservation and heat insulation performance.

The invention discloses a toluidine red pigment for a building coating and a preparation method of the toluidine red pigment, and belongs to the technical field of pigment synthesis. The toluidine red pigment is prepared from the following raw materials in parts by weight: 75 to 85 parts of toluidine red pigment matrix, 5 to 10 parts of nano titanium dioxide, 2 to 5 parts of nano zinc oxide, 3 to 8 parts of organic silicon modifier and 1 to 3 parts of polysiloxane microcapsule. By optimizing pigment components and adopting efficient preparation processes such as ultrasonic assistance and a micro-channel reactor, the weather resistance, dispersity and stability of the toluidine red pigment for the building coating are remarkably improved, meanwhile, the generation energy consumption is reduced, and the production efficiency is improved.

The invention provides a high-carbon-layer-strength intumescent fireproof coating for a steel structure. The high-carbon-layer-strength intumescent fireproof coating for the steel structure is prepared from the following components in parts by mass: 0.3 to 0.6 part of cellulose, 18 to 23 parts of phosphorus flame retardant, 3 to 6 parts of modified nano titanium dioxide, 3 to 5 parts of modified expandable graphite, 0.6 to 1.8 parts of modified glass fiber, 1 to 3 parts of aluminum hydroxide, 1 to 3 parts of boric acid, 20 to 25 parts of emulsion, 22 to 32 parts of additive and 29 to 43 parts of water, wherein the modified nano titanium dioxide is a silane coupling agent grafted nano titanium dioxide; the modified glass fibers are alkali-treated glass fibers; the modified expandable graphite is acid-treated expandable graphite. The intumescent fire-retardant coating for the steel structure has excellent carbon skeleton strength and carbon-steel adhesion strength, the structural integrity of the intumescent fire-retardant coating can be kept under severe conditions such as high temperature, burning and airflow jetting, and the practical application performance is improved.

The invention discloses a preparation method of a weather-resistant toughened nylon 66 material, and relates to the technical field of high polymer material preparation. The method is realized through the following steps: A, preparing modified titanium dioxide powder with a coating structure; b, weighing and mixing; and C, melt extrusion. According to the invention, the modified titanium dioxide powder which takes nano titanium dioxide as a matrix, is coated with the fluorine-containing polymer on the surface and improves the stability of the coating structure by means of gamma ray irradiation is added into the nylon 66 material, so that the long-term weather resistance and toughness of the nylon 66 material are improved at the same time; according to the nylon 66 material, the advantages of long-term weather resistance and toughness of the nylon 66 material coexist successfully, weather-resistant toughening modification of the nylon 66 material is smoothly realized, meanwhile, the rigidity is not obviously reduced, good rigidity and toughness can still be kept after long-term use, the comprehensive performance is excellent, and the high requirement of emerging industries for long-term use performance of the nylon 66 material is met; and development of emerging industries in China is promoted.

The invention belongs to the technical field of high polymer chemistry, and particularly relates to heat storage stable polyamide wax micro powder. The polyamide wax comprises polyamide wax micro-powder, preparation raw materials of the polyamide wax micro-powder comprise combined organic amine, and the combined organic amine comprises m-xylylenediamine and diamine with a linear symmetric structure; the modified nano titanium dioxide is obtained by carrying out surface modification on nano titanium dioxide through long-chain fatty acid. The modified nano titanium dioxide is added in the preparation process of the polyamide wax rheological agent, so that the thermal storage resistance of the polyamide wax rheological agent can be improved, and the anti-sagging performance of the polyamide wax rheological agent can be improved; according to the polyamide wax rheological agent, diamine with a linear symmetrical structure is used for replacing part of m-xylylenediamine, so that the thermal storage resistance of the polyamide wax rheological agent can be greatly improved.