2546 results about "Ultraviolet resistance" patented technology

The invention discloses a kind of new industry dope. It comprises such materials as 95 - 105 weight shares of Component A, and 1 - 3 weight shares of Component B; thereinto, Component A is made from following weight percents of materials: cementing agent 30-60%, pigment 12 - 30%, filling agent 10 - 30%, auxiliary agent 0.1 - 5%, compound nanometer dispersing agent 5 - 15% and solvent 10 - 25%; Component B is comprised of catalyzed membrane forming agent - nanometer Sb2O3 and mixed organic solvent carriers. The invention firstly brings nanometer Sb2O3 into high temperature heat preservation dope as catalyzer in dope membrane forming process. The dope of the invention has following advantages: it has high temperature heat preservation and heavy anticorrosion performances, and the coat has good acid resistance, alkali resistance, salt mist resistance, oil resistance, chemical reagent resistance, waiting resistance and ultraviolet resistance; it has excellent fire protection and waterproof performance; the clinging strength of smearing membrane is good, membrane forming speed is fast, and performance is stable.

The present invention provides a curable polysiloxane composition which is excellent in light resistance (particularly ultraviolet resistance) and adhesion and has a sufficient heat resistance/hydrothermal resistance and film-forming property and which generates little foaming at curing and does not generate cracks, peeling, coloring, and foaming even when used for a long period of time. A curable polysiloxane composition which comprises a specific hydrosilyl group-containing polysiloxane compound, a specific polysiloxane compound comprising two or more silanol groups in one molecule, and a dehydrogenative condensation reaction catalyst.

The invention relates to a preparation method of a functional fabric, and belongs to the technical field of textile materials. Functional nanoparticles are compounded on the surface of the fabric through the preparation of the functional nanoparticles and the preparation of the functional fabric. The existence of vinyl polysiloxane overcomes high adsorption capacity of functional nanoparticle aggregate, so that the uniformly dispersed functional nanoparticles are firmly adhered to the surface of the fabric, and the fabric has multiple functions of ultraviolet resistance, super-hydrophobicity, pollution resistance, antibacterial property, health and the like through the synergistic effect of the vinyl polysiloxane and the functional nanoparticles. According to the preparation method of the functional fabric disclosed by the invention, the vinyl polysiloxane is efficiently utilized, the productive value of the vinyl polysiloxane is improved, and the application of the vinyl polysiloxane to other fields is developed; moreover, the whole process is simple in equipment, relatively low in cost and free of pollution to ecological environment, and has a great application prospect.

A ceramic composite material for light conversion, which is a solidified body comprising two or more matrix phases with respective components being two or more oxides selected from the group consisting of metal oxides and complex oxides each produced from two or more metal oxides, wherein at least one of the matrix phases is a phosphor phase containing an activated oxide. The solidified body is preferably obtained by the unidirectional solidification method. The ceramic composite material for light conversion is excellent in brightness, light-mixing property, heat resistance and ultraviolet light resistance.

The invention relates to a photo-cured nanometer composite material which consists of 0 to 64 weight percent of film forming substance, 1 to 60 weight percent of inorganic nanometer particles, 1 to 56 weight percent of active thinner, 1 to 9.3 weight percent of evocating agent, 0 to 8 weight percent of coating additive and 0 to 31 weight percent of solvent. The manufacturing method comprises the following steps: (1) the prepared photo-cured nanometer composite material is counted by 100 weight percent; according to the proportion, each composition is weighed; (2) through a sol-gel method, a mechanical dispersion method or the combination of two methods, the inorganic nanometer particles are introduced to the active thinner to obtain a mixed master material; and (3) the mixed master material, an oligomer, the evocating agent, the coating additive and the solvent are mixed and evenly stirred to prepare the photocuring nanometer composite material. The photocuring nanometer composite material has the characteristics of high content of nanometer particles, good levelling performance, high transparency, good lustrousness, high adhesive force with a polymer substrate, high rigidity, scratching resistance, ultraviolet resistance and the like.

The invention relates to a highly-transparent ultraviolet-resistant energy-saving film and a preparation method thereof, belonging to the field of composite films synthesized by compounding polymer and inorganic nano-particles and aiming at overcoming the defects that the prior film has low visible light transmission and high production cost. The highly-transparent ultraviolet-resistant energy-saving film comprises the following components by the weight percent: 50-99.8 of organic polymer, 0.2-50 of metal-oxide nano-particles and 0-39.9 of polymer auxiliary agent. The highly-transparent ultraviolet-resistant energy-saving film is prepared by a solution mixing method or a solution-melting mixing method; with the solution mixing method, the organic polymer and the metal-oxide nano-particles are dispersed in dispersing medium to prepare film preparing stock solution, and the film preparing stock solution is used for preparing the energy-saving film on a substrate; with the solution-melting mixing method, the mixture of the organic polymer and the metal-oxide nano-particles is dried to prepare master batch, and the master bath is mixed with the organic polymer and the polymer auxiliary agent to prepare the energy-saving film. The highly-transparent ultraviolet-resistant energy-saving film has high visible light transmission, good ultraviolet resistance and energy-saving effect, simple preparation process and low cost, thereby being suitable for industrial production.

The invention provides a method for finishing wool fabric by compositing chitosan/TiO2, which comprises the following steps: A)pretreating fabric; B)preparing composite finishing liquor, taking butyl titanate and dissolving in ethanol, adding diethanolamine, uniformly stirring and adding mixed liquor mixed by ethanol and water, heating, stirring under a backflow state to form nano TiO2 sol; adding chitosan, citric acid and sodium hypophosphate in the nano TiO2 sol, uniformly stirring to obtain the composite finishing liquor; C)finishing wool fabric, placing wool fabric in the composite finishing liquor, dipping and padding twice, wherein mangle expression is 85% and padding temperature is 50-65%; D)predrying; E)baking; F)washing; and G)drying. According to the finishing method, chitosan and nano TiO2 sol are employed as the composite finishing liquor, the finished wool fabric has good antibiosis, shrinkproof, ultraviolet resistance and anti-insolation performances; the finishing method generates no pollution on human body and environment, and the finished wool fabric has good hand feeling.

The invention relates to a cellulose/titanium dioxide/silica aerogel and a preparation method thereof. The method comprises the steps such as cellulose sol preparation, nano-grade titanium dioxide surface loading, silica surface coating, curing, aging, hydrophobizing, bonding forming, drying treatment, and the like. According to the invention, nano-grade cellulose is adopted as a core, and is loaded with nano-grade titanium dioxide; a silica layer is coated; and the steps such as curing, aging, hydrophobizing, bonding forming, drying treatment, and the like are carried out, such that the cellulose/titanium dioxide/silica aerogel is obtained. The aerogel has the performances such as flexibility, high strength, bacterium resistance, ultraviolet resistance, odor-removing function, warm-keeping function, thermal insulation, and sound insulation. The aerogel can be widely applied in the fields such as thermal underwear, body armor, insulation materials, pressure-resistant materials, special coatings, aerospace materials, and the like.

The invention discloses a high-reflectivity photovoltaic module packaging film. The high-reflectivity photovoltaic module packaging film with a surface pre-crosslinked structure is prepared by the following steps: pre-mixing transparent resin with a high-reflectivity additive and other functional accessories, carrying out melting extrusion, film casting and surface pre-crosslinking treatment, and coiling. By adding the high-reflectivity additive, the ultraviolet-resistance performance of the film can be improved, and meanwhile, the utilization rate of a module on sunlight is enhanced, and therefore the effects of improving the service life and photoelectric conversion efficiency of the module are achieved; meanwhile, by virtue of the surface pre-crosslinked structure, the high-reflectivity layer film can be effectively prevented from overflowing during a photovoltaic module laminating process and the appearance of the module is effectively improved; the packaging film is universal for various laminating processes.

The invention relates to a spraying quick-setting rubber asphalt waterproof coating material. A special technology is adopted for preparation of the spraying quick-setting rubber asphalt waterproof coating material. The spraying quick-setting rubber asphalt waterproof coating material is a water-based spraying paint prepared according to a ratio, and a preparation method of the spraying quick-setting rubber asphalt waterproof coating material comprises following steps: a liquid rubber asphalt latex emulsion is prepared by mixing superfine, suspended and micro-emulsion modified emulsified asphalt with high-molecular polymer rubber latex; and the liquid rubber asphalt latex emulsion is mixed with a coagulant. Cold spraying construction is adopted for preparation of the spraying quick-setting rubber asphalt waterproof coating material; elastic coating film elongation is more than 1000%; restoration ratio is more than 95%. The spraying quick-setting rubber asphalt waterproof coating material possesses ultraviolet resistance, high construction efficiency, high bonding strength, excellent high-temperature resistance, excellent low temperature flexibility, and better quick setting effect; and is capable of forming films in 3 seconds. The spraying quick-setting rubber asphalt waterproof coating material is water based; is friendly to the environment; possesses no toxicity, and excellent endurance; is quick and convenient for construction; and is a novel environmental friendly waterproof paint with a wide application range. The spraying quick-setting rubber asphalt waterproof coating material is mainly used for various waterproof and anticorrosion projects. The spraying quick-setting rubber asphalt waterproof coating material is used for individual construction of waterproof projects, for composite construction of waterproof projects together with waterproof roll, and for individual construction of anticorrosion projects.

The invention discloses a full-biobased epoxy resin condensate. The condensate is prepared by the following components in part by weight: 100 parts of abietyl-based epoxy resin base material, 50 to 300 parts of tung oil anhydride and 1 to 15 parts of catalyst, has the characteristics of higher mechanical property, high ultraviolet resistance, high aging resistance and the like and is particularlysuitable for preparing biobased composite material matrix resin and outdoor electric insulation materials. The invention also discloses a preparation method for the full-biobased epoxy resin condensate. The preparation method has a simple preparation process, is high in operability and process controllability and is easy to implement industrially. The invention also discloses a full-biobased epoxy resin composition and application thereof. The full-biobased epoxy resin composition is suitable for preparing a weather resistant epoxy adhesive, epoxy resin paint and an epoxy resin coating and has a good application prospect.

The invention provides a process for preparing a new plastic, which comprises the following steps: (1) preparing raw materials; (2) weighing and proportioning the raw materials; (3) mixing PVC powder, stabilizers, packing, plasticizers and other additives, then carrying out high-speed kneading on the obtained mixture, and preplasticizing the mixture so as to obtain a pre-plasticized mixture; (4) mixing the pre-plasticized mixture with TPU particles, carrying out banbury mixing on the obtained mixture under the condition of gradient temperature control so as to obtain colloidal products; (5) carrying out double-screw granulation on the obtained colloidal products; and (6) carrying out sorting, dehydration and packing on the granular products obtained in step 5 so as to obtain the new plastic. The process is simple, the conditions of the process are easy to control, and the process is suitable for large-scale production. The invention also provides a new plastic, which has the characteristics of high resistance to wear and scrape, high elasticity, easy recovery, high flame retardance, ultraviolet resistance, freezing damage (caused by low temperature in the north) resistance, environmental protection, soft handfeel and stick resistance, and the like; and the new plastic can be applicable to wire and cable compound.

The invention discloses a weaving process of a hemp textile product, which comprises the process steps of winding, warping and weaving. Blended yarns bended by hemp fibers and cotton fibers are weaved by warps and wefts in the process, wherein the rotary speed of a grooved drum is 600 plus or minus 5r/min, and the ratio of hemp fibers to cotton fibers is 35:65. The process also comprises processing steps of refining, singeing, softening, drying and calendering. The hemp textile product produced by the invention has less filoplume, biodegradability, and excellent moisture absorbance and sweat release properties, keeps the natural antimicrobial and health-care functions of hemp, has good soft and comfortable properties, excellent ultraviolet resistance, radiation resistance and antibacterial properties, excellent high-temperature resistance and unique odor absorption and waste discharging properties; and the hemp textile product feels soft and comfortable compared with other hemp products, and is a new-generation environment-protection product.

The invention discloses a kind of new industry dope. It comprises of two kinds of materials of following weight shares: Component A 95 - 105 and Component B 2 - 8 shares; thereinto, Component A is made from such materials as membrane forming object, pigment, filling agent, auxiliary agent, compound nanometer dispersing agent and solvent; Component B is made from nanometer Sb2O3 and mixed organic solvent carriers. The dope of the invention has following advantages: at room temperature, it has prominent heavy anticorrosion performance, and has excellent performances of acid resistance, alkali resistance, salt mist resistance, oil resistance, chemical reagent resistance, waiting resistance and ultraviolet resistance; it also has excellent fire protection and waterproof performance; the clinging strength of smearing membrane is good, membrane forming speed is fast, and performance is stable.

The invention relates to polyaspartic ester resin and in particular relates to water-dispersible polyaspartic ester resin, a preparation method of waterborne polyurea coating and application. Water-dispersible polyaspartic ester is obtained by carrying out Michael addition reaction on unsaturated binary carboxylate, unsaturated monocarboxylic acid and a primary amino compound under the action of acatalyst and a neutralizing agent; a coating film of the double-component waterborne polyurea coating is obtained by utilizing a water dispersion body of the water-dispersible polyaspartic ester; theperformance keeps main properties of solvent type polyurea coating, such as rapid curing at room temperature, high glossiness, high transparency, good water resistance, corrosion resistance, ultraviolet resistance and ageing resistance.

A composition containing a non-flammable chlorofluoro-olefin copolymer having a crystallinity index less than about 10% and a weight-average molecular weight greater than about 1,000,000 daltons, wherein the copolymer has at least two comonomer units of the formula:wherein each X is independently selected from H, Cl and F; Y is selected from H, Cl, F, O(CZ2)nCZ3, (CZ2)nCZ3, (OCZ2CZ2)nCZ3 and (O(CZ2)n)nCZ3, wherein each n is independently from about 1 to about 12 and each Z is independently selected from H, Cl and F; and A is selected from H, Cl and F, provided that for at least one comonomer unit, at least one of A, Y, either X or any Z is Cl. Substrates coated with the copolymer compositions are also disclosed.

The multifunctional green nano paint consists of mainly: quaternary methacrylic acid-butyl acrylate-styrene-methyl methacrylate copolymer emulsion 20-65 wt%; nano titania 0.3-5 wt%; nano zinc oxide 0.2-3 wt%; silica 0.3-3 wt%; nano calcium carbonate 0.5-5 wt%; deionized water 3-12 wt%; superfine talcum powder 1-3 wt%; superfine calcium carbonate 3-15 wt%; titanium white3-25 wt%; and assistants including dispersant, wetter, rheologic agent, thickener, color paste, defoaming agent, etc. 2-12 wt%. The paint of the present invention features no toxicity, no pollution, wash resistance, scratching resistance, ultraviolet resistance, ageing resistance, waterproofing and mould proofing as well as self-cleaning function, so that the paint may be used wide in the decoration of inner and outer walls and the anticorrosive treatment of metal material surface.

The present invention belongs to the field of polymer material synthesis, relates to aqueous polyurethane acrylate emulsion modification, and especially to an aqueous fluorine-containing acrylate modified polyurethane coating, a preparation method and an application thereof. The preparation method comprises: dissolving polyether polyol in an N-methyl pyrrolidone solution of dimethylol propionic acid; adding diisocyanate in a dropwise manner; adopting dibutyltin dilaurate as a catalyst, and adding hydroxyethyl methacrylate to carry out end capping; adding triethylamine to form a salt, then adding deionized water to prepare an aqueous polyurethane acrylate prepolymer emulsion; and finally adding hexafluorobutyl acrylate and azodiisobutyronitrile to prepare the aqueous fluorine-containing acrylate modified polyurethane coating. The synthesized emulsion of the present invention has the following advantages that: dispersion is uniform; stability is good; water resistance and mechanical property of the cured film are substantially improved; elasticity and mechanical property of polyurethane are provided; ultraviolet resistance, nuclear radiation resistance, flexibility, excellent surface properties, water resistance and corrosion resistance of the fluorine-containing material are provided; and the coating can be adopted as coatings for building and furniture.

The present invention provides an ultraviolet ray emitting element package that has a novel structure and is equipped with a condenser lens, for a high taking-out efficiency of ultraviolet ray and stable output. The ultraviolet ray emitting element package includes a condenser lens, and an ultraviolet ray emitting element positioned at the center on the bottom surface side thereof, away from the bottom surface of the lens. A refractive index difference buffering material having ultraviolet resistance is filled at least in the gap between the ultraviolet ray emitting element and the bottom surface of the condenser lens. A silicon resin or fluorine resin is used as the refractive index difference buffering material.

The invention discloses a surface modified aramid fiber and a preparation method thereof. Clean aramid fiber which is cleaned is dipped into a dopamine solution under a weak basicity condition to obtain a dopamine wrapped aramid fiber; through an esterification reaction and pi-pi interaction between oxidized graphene and the dopamine wrapped aramid fiber, a high-grafting-ratio oxidized graphene layer is formed on the surface of the aramid fiber, so that the surface modified aramid fiber is obtained. The surface modified aramid fiber has excellent ultraviolet resistance and is provided with a lot of active groups, in this way, the surface activity of the aramid fiber is obviously improved, and conditions are provided for further modification and application of the fiber. Meanwhile, in the process of modifying the aramid fiber, it is not needed to pretreat the aramid fiber, the preparation process is environmentally friendly, the operation technology is simple and controllable, and the surface modified aramid fiber is suitable for large-scale industrialized production.

The invention relates to a nitrogen doped titanium dioxide film of hydrophobicity and ultraviolet resistance, and its preparation. The character of film lies in that nitrogen exists in titanium dioxide crystal lattice in substitution and clearance mode, still a portion of Ti exist in Ti<3+> ion mode. film crystallization may be red schorl, anatase and amorphism. Titanium dioxide film prepared using direct current and radio-frequency magnetron sputtering method has good hydrophobic effect. Contact angle of film to distilled water is 97-110 DEG, ultraviolet cut-off wavelength is above 390nm, and visible light average transmittance is 70%-80%. Hydrophobicity of film is not influenced by film exposition time in air. The invention is easily operated, and the film thickness and composition can be controlled. Nitrogen doped hydrophobic film can be prepared for sample of different specification, material quality, and shape.

A one-component moisture-cured polyurethane sealant with excellent ultraviolet resistance belongs to the technical field of one-component moisture-cured polyurethane sealants, mainly solves the problems of photooxidation aging phenomenon, mechanical properties decreasing, sealant surface cracking, yellowing of white sealants and black water flowing of black sealants for the reason of rain erosion of one-component moisture-cured polyurethane sealants in the prior art under the effects of long-term irradiation of ultraviolet ray in natural light, and is mainly characterized by including 8 to 20 parts of a polyurethane prepolymer (I), 20 to 30 parts of a polyurethane prepolymer (II), 0.5 to 2 parts of a water absorption stabilizer, 0.1 to 0.7 part of a silane coupling agent, 0.1 to 1 part of a light stabilizer, 0.1 to 1 part of an antioxidant, 28 to 50 parts of a polyurethane-use filler, 1 to 4 parts of carbon black, 1 to 35 parts of a thixotropic agent and 0.4-2 parts of a catalyst. The one-component moisture-cured polyurethane sealant has the advantages of no cracking after placing in an ultraviolet aging box for 8000h, no black mark after pasting with a non-setting adhesive tape, good elasticity maintainence and less than 30% of decrease of the elongation at break, and is suitable for auto-body exterior caulking.

The invention discloses a preparing method of high reflectance rate ethylene-vinyl-acetate copolymer composition, which is characterized by containing the following components by weight proportion: 100 parts of ethylene-vinyl-acetate copolymer, 0.5-2 parts of cross-linking agent, 0.05-1 part of antioxidant, 0.05-0.5 part of light stabilizer, 0.1-1.5 parts of tackifier, 0.01-3 parts of fluorescent whitening agent and 0.5-15 parts of additive with a high reflection function. The ethylene-vinyl-acetate copolymer and the other functional additives are performed with premixing, fusing extruding and tape casting or calendaring for film forming, and finally are wound up to manufacture a high reflection rate ethylene vinyl acetate copolymer (EVA) packaging glue film. The preparing method of high reflectance rate ethylene-vinyl-acetate copolymer composition does not add organic ultraviolet absorber, thereby reducing yellowing effect on the glue film caused by the ultraviolet absorber. In addition, the preparing method of high reflectance rate ethylene-vinyl-acetate copolymer composition improves yellowing resistance and ultraviolet radiation resistance of the glue film by adding fluorescent whitening agent and high reflection additive. Simultaneously, reused ratio of light rays is increased, and finally long period service life of a photovoltaic assembly can be prolonged and photoelectric conversion efficiency of the photovoltaic assembly can be improved.