135results about How to "Improves UV resistance" patented technology

The invention relates to the technical field of asphalt concrete, and discloses an anti-crack asphalt concrete material and a preparation method thereof. According to the asphalt concrete material disclosed by the invention, by adding the reinforcing filler and the composite aerogel, the crack resistance, the service life and the ultraviolet aging resistance of a matrix are remarkably improved; wherein the reinforcing filler is based on the synergistic effect among modified lignin, diatomite and hydrotalcite, the compatibility among modified lignin, diatomite and hydrotalcite is improved by utilizing a silane coupling agent, and the dispersity of the reinforcing filler in a matrix is improved, so that the crack resistance of the matrix is improved, the service life of the matrix is prolonged, and the ultraviolet resistance of the matrix is improved; the composite aerogel has excellent heat insulation performance and a three-dimensional network structure, and the crack resistance of the matrix can be improved through the synergistic effect.

The invention relates to the technical field of polyurethane coatings, and discloses a preparation method of an antibacterial wear-resistant waterborne polyurethane coating, which comprises the following steps: taking concentrated hydrochloric acid, p-phenylenediamine, sodium nitrite, paraformaldehyde, amino-modified nano silicon dioxide and hexamethylene diisocyanate as raw materials; the preparation method comprises the following steps: taking 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide as a raw material, carrying out diazotization coupling reaction, substitution reaction, Mannich reaction and addition reaction to prepare modified polyisocyanate, then taking 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and ((2-aminoethyl) azadiyl) dimethanol as raw materials, carrying out substitution reaction to prepare DOPO-based dihydric alcohol, and carrying out reaction to prepare the DOPO-based dihydric alcohol. Finally, the modified polyisocyanate, DOPO-based dihydric alcohol and polyethylene glycol 400 are used as raw materials, an antibacterial wear-resistant polyurethane emulsion is prepared through a prepolymerization reaction and a chain extension reaction, and the prepared polyurethane coating has good antibacterial, anti-ultraviolet, flame-retardant and wear-resistant properties.

The invention relates to a self-repairing invisible car cover and a preparation method thereof, and relates to the technical field of automobile material processing, and the self-repairing invisible car cover comprises the following components in parts by mass: 20-40 parts of fluorine-containing polyol, 15-30 parts of polyisocyanate, 5-10 parts of a composite chain extender, 10-20 parts of self-repairing microcapsules, 1-3 parts of an initiator and 30-50 parts of a solvent. The preparation method comprises the following steps: preparing a self-repairing coating; coating the surface of the transparent substrate with an adhesive to obtain an adhesive layer, and covering the adhesive layer with a release film to obtain a semi-finished automobile cover; and the self-repairing coating is applied to the face, away from the release film, of the semi-finished automobile cover, heating and curing are conducted, the semi-finished automobile cover with a self-repairing coating is obtained, the self-repairing coating is coated with a protective film, and the self-repairing invisible automobile cover is obtained after curing. The automobile cover has the effect of improving the self-repairing performance of the automobile cover, and the automobile cover has good weather resistance, tensile resistance and puncture resistance.

The invention belongs to the technical field of photovoltaic tempered glass, and particularly relates to photovoltaic tempered glass and a preparation method thereof.The photovoltaic tempered glass sequentially comprises tempered glass and a protective coating from bottom to top; the protective coating is prepared from the following raw materials in parts by mass: 20 to 45 parts of fluorine-containing polysiloxane, 10 to 18 parts of tetraethoxysilane, 10 to 20 parts of silicon dioxide / tetrapod-like zinc oxide whisker / alkyl phosphate, 10 to 20 parts of titanium dioxide / polymer molecular brush, 0.5 to 1 part of catalyst and 80 to 120 parts of solvent; the fluorine-containing polysiloxane is obtained by carrying out a reaction on octamethyl cyclotetrasiloxane, decamethyl cyclopentasiloxane and trifluoropropyl methyl cyclotrisiloxane. The photovoltaic tempered glass provided by the invention has super-hydrophobicity, excellent light transmittance, high-temperature and high-humidity resistance, high and low temperature impact resistance and ultraviolet resistance.

The invention provides a back contact photovoltaic cell piece capable of preventing stacking scratch in a high-temperature passivation process. The back contact photovoltaic cell piece comprises a back contact photovoltaic cell piece body and a plurality of soft isolation protrusions located on the light receiving face of the back contact photovoltaic cell piece body. The soft isolation protrusions are used for supporting photovoltaic cells to be mutually isolated when the photovoltaic cells are stacked layer by layer, and the soft isolation protrusions are resistant to high temperature of 300 DEG C and do not become sticky or yellow within 3 hours. According to the invention, the soft isolation projections are arranged on the light receiving surface of the back contact photovoltaic cell sheet body to support mutual isolation of the photovoltaic cell sheets when the photovoltaic cell sheets are stacked layer by layer, so that the photovoltaic cell sheets can be protected from being scratched in the stacking and moving process; the flexible isolation protrusions are arranged on the back contact photovoltaic cell piece, the flexible isolation protrusions can be prevented from scratching the surface of the photovoltaic cell piece due to the specific flexibility of the flexible isolation protrusions, meanwhile, the flexible isolation protrusions can bear the passivation temperature of 300 DEG C or above and do not crack or yellow or adhere to the cell piece, and therefore it can be ensured that the back contact photovoltaic cell piece is subjected to high-temperature passivation in a multi-layer stacking mode, and the passivation efficiency is improved.

The utility model provides a photovoltaic segmented reflection gap film, the gap film from bottom to top comprises an EVA layer, a PET base film layer and a reflective microstructure layer in order, the reflective microstructure layer comprises a plurality of reflective microstructure segments arranged at intervals, the cross section of each reflective microstructure segment is a plurality of continuously arranged triangular prism structures, and the vertex angle of each triangular prism deviates from the EVA layer. According to the photovoltaic segmented reflection gap film, the reflection microstructure layer comprises a plurality of reflection microstructure segments arranged at intervals, short circuit caused by the fact that the reflection gap film is communicated with anodes and cathodes of adjacent battery strings is prevented, and the structural design avoids local short circuit of an assembly caused by the reflection gap film under the condition that the actual effect of the reflection gap film is not affected. The consumption of metal aluminum of the reflective microstructure coating can be further reduced, and the environmental pressure is reduced.

The invention relates to the technical field of metal corrosion prevention, and particularly discloses a titanium alloy bolt surface aluminum coating coating method capable of improving corrosion resistance. A titanium alloy bolt surface aluminum coating coating method capable of improving corrosion resistance comprises the following steps that a titanium alloy bolt is subjected to cleaning and sand blasting pretreatment; the preparation method comprises the following steps: adding the aluminum powder and the benzaldehyde resin into the solvent, mixing and stirring, continuously adding the polytetrafluoroethylene micro powder, the diluent and the self-repairing microcapsule prepared in advance, and continuously stirring until the mixture is uniform, the prepared anti-corrosion aluminum coating is sprayed to the surface of the titanium alloy bolt, after the surface of the coating is dried, curing is conducted for 55 min to 65 min at the temperature of 180 DEG C to 200 DEG C, and the aluminum coating is obtained; the self-repairing microcapsule is prepared by mixing a microcapsule A and a microcapsule B, wherein the microcapsule A is prepared by wrapping a polyurethane prepolymer with polyvinyl butyral as a shell layer, and the microcapsule B is prepared by wrapping a curing agent support with polyvinyl butyral as a shell layer. The aluminum coating prepared through the method has the advantages of being good in corrosion resistance and durability.

The invention provides an environment-friendly biodegradable waterproof coiled material and a preparation method thereof, and belongs to the field of waterproof coiled materials. The coiled material design comprises a plurality of functional layers, and firstly, high-toughness and degradable bio-based fibers and natural fibers are selected in a reinforcing layer so as to provide reliable mechanical properties and environment-friendly characteristics; the waterproof functional layer adopts a renewable bio-based polymer, so that not only is the adaptability of the material improved, but also the mechanical property of the material is enhanced through combination with an inorganic filler; montmorillonite, bentonite and regenerated cellulose are introduced into the layer to serve as filler and have a synergistic effect, so that the waterproof performance, the high temperature resistance and the aging resistance are remarkably improved, and the service life is prolonged. The surface protection layer is made of modified polyurethane, fluorinated polyurethane and organic silicon resin are combined, and hydrophobicity, pollution resistance, heat resistance and ultraviolet resistance are enhanced.

The invention discloses a high-elasticity breathable fabric and a preparation method thereof, and relates to the technical field of fabrics. The preparation method comprises the following steps: firstly, carrying out esterification reaction on fluorinated dihydric alcohol and terephthalic acid to obtain a fluorinated polymer, then carrying out coating modification on nano titanium dioxide by using chitosan to obtain modified nano titanium dioxide with microsphere morphology, adding the modified nano titanium dioxide as a new filler into a molten fluorine-containing polymer, and carrying out electrostatic spinning operation to obtain the modified nano titanium dioxide / fluorine-containing polymer composite material. The preparation method comprises the following steps: preparing a fiber material with a high specific surface area, and carrying out two-for-one twisting, spinning, weaving and other operations on the obtained fiber to finally prepare the high-elasticity breathable fabric. The high-elasticity breathable fabric prepared by the invention has long-acting antibacterial, anti-ultraviolet, water-resistant and stain-resistant effects.

The invention relates to a weather-resistant coating for a photovoltaic module and a preparation method of the weather-resistant coating, and belongs to the technical field of high polymer materials. The modified epoxy resin adhesive comprises the following components in parts by weight: 90-120 parts of modified resin, 5-25 parts of a curing agent, 10-30 parts of a composite filler, 5-10 parts of an auxiliary agent, 5-40 parts of a solvent and 0.5-3 parts of a plasticizer, a benzotriazole structure and a benzophenone group in the modified resin cooperate to enhance ultraviolet resistance and prolong service life, and introduced 1H, 1H-perfluoropropyl methacrylate is short in C-F bond and high in bond energy, so that moisture resistance and corrosion resistance are improved; long-carbon-chain silane in the composite filler modifies nano-zinc oxide, so that super-hydrophobicity is realized, cracks on a resin curing surface are filled, and corrosion resistance and wear resistance are enhanced; in addition, cinnamic acid endows the coating with excellent antibacterial ability, and the weather-resistant coating for the photovoltaic module prepared by the invention not only has good ultraviolet resistance, high temperature resistance and corrosion resistance, but also has excellent water-resistant and antibacterial effects.

The invention relates to the technical field of epoxy hybrid new materials, and discloses a high-flexibility epoxy sealant and a preparation method thereof.The sealant is composed of a component A and a component B. The component A is prepared from, by volume, 60-100 parts of silane modified polyether polymer, 0-20 parts of amine curing agent, 0-10 parts of thixotropic agent, 0-5 parts of ultraviolet absorbent, 0-5 parts of dewatering agent and 0-2 parts of catalyst; the component B comprises 60-100 parts of epoxy resin, 0-10 parts of thixotropic agent, 0-30 parts of toner, 0-20 parts of filler and 0-5 parts of diluent. Compared with a common sealant, the MS epoxy hybrid sealant has better bonding universality and excellent ultraviolet resistance and weather resistance, the bonding area is wider due to strong polar groups in molecules, the MS epoxy hybrid sealant can be normally cured in a humid environment, the construction environment is not limited, and the MS epoxy hybrid sealant has practical and practical significance to a certain extent.

The utility model provides a seamless splicing type aluminum ceiling moistureproof structure which comprises a ceiling body, the ceiling body comprises a substrate layer, a first functional layer and a second functional layer, the first functional layer comprises an epoxy resin coating and a polyurethane coating, the second functional layer comprises a fluorocarbon coating and a nanometer waterproof coating, and the nanometer waterproof coating is a polyurethane coating. By arranging the first functional layer comprising the epoxy resin coating and the polyurethane coating, the epoxy resin coating has excellent waterproof and moisture-proof performance, can effectively prevent water from permeating, further has good adhesive force and chemical corrosion resistance, and can protect the surface of the aluminum material from being damaged by oxidation and chemical corrosion; the epoxy resin coating is smooth in surface and easy to clean and maintain, and the polyurethane coating has excellent moisture-proof and waterproof performance, has elasticity and wear resistance, can adapt to thermal expansion and cold contraction changes of the aluminum ceiling body and is not prone to cracking and falling off.

The invention discloses a preparation method of a high-performance anti-ultraviolet water-repellent polyester fiber. The preparation method comprises the following steps: S1, preparing core-shell composite modified particles; s2, preparing a modified finishing liquid; and S3, carrying out dipping treatment on the polyester fiber by adopting the modified finishing liquid, so as to obtain the high-performance anti-ultraviolet water-repellent polyester fiber. The polyester fiber provided by the invention has excellent ultraviolet resistance and water repellency, titanium dioxide and carbon dots are adopted as main components of an anti-ultraviolet agent, and the core-shell composite modified particles with a special structural system are constructed, so that the excellent ultraviolet resistance can be provided, and the polyester fiber has excellent water repellency. The carbon dots are added into the polyester fiber, the adverse effect caused by the photocatalysis of titanium dioxide can be overcome, the water repellency of the polyester fiber can be improved through the carbon dots, the negative effect of the photocatalysis of titanium dioxide is further reduced, and the carbon dots play multiple improvement roles in the polyester fiber.

The application provides a kind of composite modified asphalt with anti-ultraviolet and anti-salt corrosion aging and a preparation method thereof, and the preparation raw materials include base asphalt, linear SBS, GN, LDHs-PABA-CA, a compatibilizer and a stabilizer.The base asphalt is heated to a molten state to obtain molten asphalt.Under the condition of constant temperature heating and continuous stirring, linear SBS is added to the molten asphalt to make linear SBS swell in the molten asphalt, and then shear mixing is carried out to obtain SBS composite modified asphalt.GN and LDHs-PABA-CA are added to the SBS composite modified asphalt and stirred uniformly, and shear mixing is continued to obtain a composite modified asphalt base with anti-ultraviolet and anti-salt corrosion aging.A compatibilizer and a stabilizer are added to the composite modified asphalt base with anti-ultraviolet and anti-salt corrosion aging, and then the mixed system is stirred under constant temperature conditions to obtain a composite modified asphalt with anti-ultraviolet and anti-salt corrosion aging.

This invention discloses a self-cleaning radiative cooling coating based on biomass carbon quantum dots, its preparation method, and its application. The coating comprises a polymer film-forming resin, carbon quantum dots, and hollow glass microspheres; wherein the mass ratio of the polymer film-forming resin to the filler is 1:(0.1-0.5), and the mass ratio of the hollow glass microspheres to the carbon quantum dots is 1:(0.05-0.2). This invention synergistically enhances solar reflectivity through the photoluminescence properties of carbon quantum dots and the scattering properties of hollow glass microspheres, while simultaneously utilizing the synergistic effect of fluorinated resin and modified hollow glass microspheres to endow the coating with superhydrophobic self-cleaning function. A single layer of this coating can achieve a solar reflectivity >92%, mid-infrared emissivity >94%, and contact angle >150°, possessing both efficient daytime radiative cooling and long-lasting self-cleaning performance. It is particularly suitable for passive heat dissipation of outdoor equipment such as new energy vehicle charging piles, and features simple process, environmental friendliness, and excellent performance.

The invention relates to the technical field of building energy conservation, heat preservation and heat insulation materials, and discloses a flame-retardant phase-change heat preservation and heat insulation building material and a preparation method thereof.The preparation method of the flame-retardant phase-change heat preservation and heat insulation building material comprises the following steps that paraffin is loaded in ZnO / CuO hollow microspheres to obtain phase-change microspheres; modifying the phase change microspheres with polydopamine and acryloyl chloride to obtain functionalized phase change microspheres; the preparation method comprises the following steps: carrying out graft polymerization on a phosphorus-containing eugenol compound and 1-amino-5-hexene-2-alcohol on the functionalized phase change microspheres to obtain multifunctional phase change microspheres; polyether polyol, functionalized polyol, myricetin, multifunctional phase-change microspheres and the like are used as raw materials, foaming is performed, and the flame-retardant phase-change heat-preservation and heat-insulation building material is obtained. The flame-retardant phase-change heat-preservation and heat-insulation building material is excellent in heat-preservation and heat-insulation performance, flame-retardant performance and mechanical performance, has anti-ultraviolet performance and antibacterial and mildew-proof performance, can reduce erosion damage caused by external conditions, and prolongs the service life.

The utility model relates to a photovoltaic assembly comprising a cell string, the cell string comprises a plurality of slice cells, and the cutting surface of each slice cell is provided with a passivation layer; the photovoltaic module further comprises a plurality of light conversion films, the light conversion films are arranged on the sides of the passivation layers of the slice battery pieces, and the side edges of the light conversion films extend to the surfaces of the slice battery pieces to cover the passivation layers. The light conversion film of the photovoltaic assembly is used for covering the passivation layer, so that the damage of ultraviolet light to the passivation layer is greatly reduced, the ultraviolet resistance of the passivation treatment part of the sliced battery piece is improved, the power of the photovoltaic assembly is increased, and the service life of the photovoltaic assembly is prolonged.

The utility model relates to the field of car cover, especially a high heat insulation ultraviolet resistant car cover. The utility model wants to solve the technical problem to provide a kind of high heat insulation ultraviolet resistant car cover that can synergic barrier ultraviolet and infrared, with high heat insulation and ultraviolet resistant performance, improve the service life. A kind of high heat insulation ultraviolet resistant car cover, including the substrate layer, function layer and protective layer that are sequentially laminated settings;The function layer is alternatively stacked by multiple heat insulation layers and multiple ultraviolet resistant layers;The heat insulation layer is metal sputtering layer or metal oxide nanoparticle layer, for reflecting or absorbing infrared rays;The ultraviolet resistant layer is ultraviolet absorber coating, for absorbing ultraviolet rays. The utility model reaches the effect that synergic barrier ultraviolet and infrared, with high heat insulation and ultraviolet resistant performance, improve the service life.

The invention relates to the technical field of layered composite materials, in particular to a heat-insulating and weather-resistant composite material, a preparation method and application of the heat-insulating and weather-resistant composite material to car clothing. The composite material comprises a three-layer structure including an outer layer film, a middle layer film and an inner layer film, the inner layer film is a PP non-woven fabric, the material is soft, vehicle paint cannot be damaged due to friction, the middle layer film is an EPE foam cotton piece, the heat conductivity coefficient of air in a pore structure contained in the middle layer film is low, the heat insulation effect is good, and the heat insulation effect is good. The outer-layer film is prepared from polyacrylonitrile as a main raw material through electrostatic spinning; polyacrylonitrile has good weather resistance and solarization resistance, polyacrylonitrile is subjected to modification treatment, a waterproof component and an anti-ultraviolet component are introduced, and the anti-ultraviolet performance and the waterproof performance can be improved; a heat insulation component and an anti-oxidation component are added into the modified polyacrylonitrile spinning solution, so that the heat insulation performance and the anti-oxidation performance of the outer layer film can be improved.

The invention discloses a glue-free PET (Polyethylene Terephthalate) composite PVC (Polyvinyl Chloride) film and a preparation method thereof. The glue-free PET composite PVC film is prepared from the following components in parts by mass: 100 parts of PVC resin, 16 to 50 parts of plasticizer, 2 to 8 parts of stabilizer, 0.5 to 2 parts of processing aid, 0.5 to 2 parts of anti-ultraviolet agent and 2 to 10 parts of anti-impact modifier. According to the adhesive-free PET composite PVC film and the preparation method thereof provided by the invention, the polyester plasticizer with high molecular weight is adopted, and the anti-ultraviolet agent is compounded and added, so that the weather resistance and the ultraviolet resistance of the PVC film can be improved; and the acrylate impact modifier is adopted, so that the processability of the product and the toughness of the finished product can be improved. The PET is directly compounded in the PVC calendering production process, so that the double-sided highlight effect of the PVC film is realized, the transparency of the product is high, and the extinction problem in the industry is solved.

According to the construction process, a hopper feeding device, a transmission system, a heating extrusion device, a cooling shaping device, a cutting device, a thread rolling device, a traction device, a grinding device and a sterilization device are arranged. The acupuncture needle prepared from the poly (lactic-co-glycolic acid) material has good non-toxic biodegradability, the acupuncture needle prepared from the poly (lactic-co-glycolic acid) material has good in-vivo biocompatibility, degradation products of lactic acid and glycolic acid can participate in metabolism of a human body, and finally carbon dioxide and water are formed and discharged out of the body. Meanwhile, the material is degraded by organisms and microorganisms in the natural world in the natural environment; by adding the traditional Chinese medicine pigment and adding a small amount of surfactant (phenol polyethylene glycol solvent or zinc naphthenate), the finished acupuncture needle has excellent weather resistance, light resistance, chemical corrosion resistance and ultraviolet resistance.

The invention belongs to the technical field of papermaking, and provides a modified bacterial cellulose stabilized ASA sizing agent emulsion. The TEMPO oxidized bacterial cellulose nanofiber suspension and the silver ammonia solution are heated to react, and TBC-coated Ag is obtained; dropwise adding TEOS (tetraethyl orthosilicate) into the ethanol dispersion liquid of the TBC (at) Ag, stirring and reacting to obtain TBC (at) Ag (at) SiO2; aSA is added into the TBC (at) Ag (at) SiO2 aqueous dispersion to be sheared and emulsified, and the modified bacterial cellulose stabilized ASA sizing agent emulsion can be obtained. The prepared ASA emulsion can effectively block the influence of environmental factors on the emulsion, the interface stability of the emulsion is remarkably improved, no additional surfactant needs to be added, the sizing process is simpler and more convenient, the long-term stability of the ASA emulsion is effectively improved, a water phase and an oil phase are prevented from being separated, and the water resistance, the antibacterial property and the ultraviolet resistance of paper are improved.

The present invention relates to a lightweight, corrosion-resistant and ultraviolet-resistant floating material, and belongs to the technical field of floating material preparation. The floating material comprises the following raw materials in parts by weight: 80-92 parts of HDPE, 8-20 parts of composite modified coal gangue, 0.5-1.2 parts of foaming agent, and 0.5-1.2 parts of foam stabilizer; the composite modified coal gangue is made by surface grafting reaction of lightweight modified coal gangue and light-stable functionalized siloxane; the lightweight modified coal gangue is obtained by enzymatic pore-forming reaction of coated porous coal gangue and composite enzyme in sodium acetate and acetic acid buffer solution after mixing, spray drying and granulation of starch, water and acid-modified coal gangue. The present invention solves the problem that the introduction of existing fillers easily causes an increase in the density of floating materials by introducing composite modified coal gangue, and the floating material obtained by the present invention has excellent corrosion resistance and ultraviolet resistance.

The invention relates to the technical field of electrical insulating materials for power transmission lines, and discloses a low-temperature-toughness durable high-hydrophobicity epoxy resin hybrid insulating material and a preparation method thereof. Comprising 50-100 parts of an epoxy monomer, 5-50 parts of a siloxane-based epoxy monomer, 30-80 parts of a curing agent, 8-20 parts of a polysiloxane modifier, 10-30 parts of a composite filler, 1-10 parts of an acid-base accelerator, 80-160 parts of aluminum hydroxide, 80-120 parts of silicon powder and 5-25 parts of a silane coupling agent. A chemical network structure on a molecular level is designed, a siloxane epoxy monomer with excellent low-temperature mechanical toughness and high hydrophobicity is introduced, a polysiloxane chain segment is subjected to modification treatment and chemically crosslinked with a functional group of a curing agent, the problem of interfacial compatibility is solved, a composite filler capable of improving compatibility is added, and the curing agent is prepared. According to a free radical reaction mechanism, the surface of the formed insulating material is subjected to rapid fluorination treatment, and the epoxy resin-based hybrid insulating material is endowed with mechanical toughness and lasting hydrophobic performance in a low-temperature environment.

This utility model relates to a cooling and UV-resistant jacquard knitted fabric and garment. The front of the fabric consists of alternating concave and convex stripes, each made of 40D / 24F polyethylene nylon core yarn and 20-50D spandex. The knitting pattern is four loops per cycle, with the first four loops using the polyethylene nylon core yarn and spandex. The concave stripes are formed by loops knitted by the first needle of each of the first four loops. The convex stripes are formed by loops knitted by the second and third needles of the first and second loops, respectively, followed by float knitting, and by the second and third needles of the third and fourth loops, respectively, followed by float knitting and loop knitting. Through the combination and loop-forming method of the functional yarns—polyethylene nylon core yarn and high-elastic spandex—the fabric achieves a cooling sensation and highly effective UV blocking across the entire wavelength range, while also possessing breathability, high elasticity, and comfort.

The invention belongs to the technical field of high polymer materials, and relates to a preparation method and application of an ultraviolet aging resistant polyether ester elastomer, the preparation method comprises the following steps: firstly, carrying out esterification reaction or ester exchange reaction on 1, 4-cyclohexanedimethanol and an oxalic acid compound to obtain hydroxyl-terminated oxalate; mixing the hydroxyl-terminated oxalate with an aromatic dibasic acid compound, aliphatic dihydric alcohol, polyether glycol, a catalyst and an antioxidant, and sequentially performing esterification reaction, pre-polycondensation reaction and final polycondensation reaction to obtain the ultraviolet aging resistant polyether ester elastomer. Wherein the oxalic acid compound is oxalic acid or ester of oxalic acid; the aromatic dibasic acid compound is aromatic dibasic acid or ester of the aromatic dibasic acid. Compared with the prior art, the preparation method disclosed by the invention has the characteristics of simple preparation process and good ultraviolet aging resistance, a sample is placed in an ultraviolet aging test box to be irradiated for 30 days, the optimal tensile strength reduction percentage is 38.9% which is lower than 48.5% of the tensile strength before hydroxyl-terminated oxalate copolymerization, and the ultraviolet aging resistance is obviously improved.

This invention relates to a wear-resistant coated windproof fabric and its preparation method. The fabric comprises an inner layer and a coated windproof outer layer. The coated windproof outer layer is obtained by uniformly coating a modified polyurethane solution onto the surface of a base fabric and then drying it. The modified polyurethane solution comprises, by weight, 60-68 parts of an aqueous polyurethane solution, 10-16 parts of a biomass extract, 12-16 parts of silica, 5-8 parts of a thickener, and 3-7 parts of a dispersant. The fabric prepared by the method of this invention exhibits high wear resistance, windproofness, UV resistance, and flame retardancy. It is a wear-resistant coated windproof fabric. Using this fabric as a down jacket material can significantly improve the durability and protective performance of down jackets and meet the needs of different users in diverse environments, thus having significant practical value.

The utility model relates to acrylic plate technical field especially relates to acrylic flash point structural board, include: board body, the inside of board body is equipped with the accommodating groove of one end is open, and the side wall department of board body is equipped with two positioning holes close to the opening, and two positioning holes all in -line are equipped with the magnetic block of embedding, the bale, the bale is bonded and is pasted in the outer wall of board body, the pattern board, the pattern board is inserted in the accommodating groove and is consistent with the size of accommodating groove, the seal, both ends of seal are all solid and are equipped with the magnetic column, and the magnetic column is inserted in the positioning hole and is connected with the magnetic block magnetic suction, this acrylic flash point structural board can realize the replacement of different patterns and can improve the protectivity of acrylic plate, and can make the light source of side surface luminous homogenization, make the whole pattern display effect better, clearer, and have the flash silver effect, can improve the ornamental value, can strengthen the ultraviolet resistance ability simultaneously, prevent the board material aging, discoloration, improve the wear resistance and self -cleaning.

The utility model relates to the technical field of curtain walls, in particular to a high-energy-saving unit type curtain wall structure which comprises photovoltaic glass, a ceramic aluminum acoustic panel, a rubber and plastic heat preservation layer, an aluminum silicate heat preservation layer, an inorganic active heat preservation layer, an aluminum alloy connecting strip and a butt joint plate with an inner groove. The rubber and plastic heat preservation layer is in adhesive connection with the inner surface of the photovoltaic glass through hot melt adhesive, the outer surface of the aluminum silicate heat preservation layer is in adhesive connection with one side of the rubber and plastic heat preservation layer, and the outer surface of the inorganic active heat preservation layer is in adhesive connection with one side of the aluminum silicate heat preservation layer. According to the high-energy-saving unit type curtain wall structure, the photovoltaic glass not only serves as a building envelope, but also can convert solar energy into electric energy, partial self-supply of building energy is achieved, and the nanometer titanium dioxide coating in the inorganic active heat preservation layer has the photocatalysis effect under the illumination condition and can effectively decompose formaldehyde, VOCs and other harmful gases.