28results about How to "Improves UV resistance" patented technology

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 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.

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.

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.

This utility model discloses a layered tent, relating to the field of tent technology. It includes an inner tent fabric and an outer tent fabric. The bottom of the inner tent fabric is equipped with windproof fixing ropes, and an inflatable support column is added to the outside of the inner tent fabric. The upper end of the inflatable support column has an inflation port, and a Velcro surface is added to the outer side below the inflatable support column. An installation top post is provided at the upper outer end of the inner tent fabric, and the outer tent fabric is distributed above the inner tent fabric. A limiting installation top is added to the top of the outer tent fabric, and a Velcro hook surface is added to the lower inner side of the outer tent fabric. The lower inner end of the outer tent fabric is provided with a nylon base layer, and an antistatic polyester layer is provided above the nylon base layer. A polyester fiber abrasion-resistant layer is provided above the antistatic polyester layer. This layered tent allows for quick and easy installation of the inner and outer layers, reducing manual labor intensity. It is also easy to assemble and disassemble, increasing the overall practicality and efficiency of the layered tent.

The application belongs to the technical field of thermoplastic elastomer modification, and discloses a silane coupling agent modified thermoplastic elastomer and a preparation method thereof, and aims to solve the technical defects of the existing thermoplastic elastomer, such as uncoordinated strength and toughness, poor temperature change resistance, insufficient ultraviolet stability, and poor comprehensive performance coordination. The modified thermoplastic elastomer is prepared by compounding a thermoplastic elastomer base material, a silane coupling agent modification liquid, a boron nitride-kaolin combined agent and other auxiliary agents according to specific weight parts. The preparation process of the application is simple and controllable, the obtained modified thermoplastic elastomer has balanced strength and toughness, a wide temperature change resistance range, excellent ultraviolet stability and outstanding comprehensive performance.

The present disclosure provides a profile and a forming method thereof, the forming method comprising: forming continuous fibers coated with an infiltrating material into an initial profile; and coating a coating material in a molten state on the initial profile to form a profile, wherein the coating material comprises a thermoplastic material. The forming method of the profile provided by the present disclosure has good mechanical properties of the formed initial profile, and the coating layer formed on the surface of the profile has good weather resistance, ultraviolet resistance, anti-aging, hydrolysis resistance and wear resistance.

This invention relates to the field of preparation method technology and discloses a method for preparing a low-density nylon foam material. The method includes selecting nylon resin as the matrix material, wherein the nylon resin is a blend of PA6 and amorphous nylon PA610 in a specific ratio, wherein the mass ratio of PA6 to PA610 is 60:40 to 80:20, and the melt strength of the nylon resin is greater than or equal to 18 Pa·s; introducing a composite foaming agent, wherein the composite foaming agent is a combination of a chemical foaming agent and a physical foaming agent; and adding a nucleating agent, wherein the nucleating agent is nano-sized silica, nano-clay, talc, or a combination thereof, wherein the mass content of nano-silica is 0.5% to 2.0%. This invention can maintain stable dimensions and mechanical properties in humid environments and has a uniform and stable cell structure.

This invention discloses a method for preparing a transparent fire-retardant wood coating, belonging to the field of coating technology. The transparent fire-retardant wood coating includes an inner coating and an outer coating. The preparation method of the inner coating is as follows: a flexible flame retardant is dissolved in water, and tea polyphenol crystals are added to form a flame-retardant mixture; then, it is mixed evenly with an amino resin to obtain a transparent fire-retardant inner coating. The preparation method of the outer coating includes: first, preparing a sulfur-containing all-organic high-refractive-index polymer by catalytic polymerization of bromoalkanes and dithiophenol monomers using an organic base; then, dissolving the polymer in a transparent organic solvent to obtain a high-refractive-index polymer solution; grinding ammonium polyphosphate and pentaerythritol and mixing them evenly with a polysiloxane emulsion to obtain a fire-retardant mixture; finally, adding the high-refractive-index polymer solution, a film-forming aid, and an amino resin to the fire-retardant mixture to obtain a transparent fire-retardant outer coating. This invention achieves good UV resistance in addition to transparency and fire resistance.

The application discloses a graphene functionalized reinforced modified polyester fiber and a preparation method thereof. The method comprises the following steps: 1) using dimethyl phthalate, ethylene glycol, a catalyst and a multi-component composite modifier as raw materials to polymerize functionalized modified polyester master batches; and 2) melting and spinning the functionalized modified polyester master batches to obtain graphene functionalized reinforced modified polyester fibers. The self-made multi-component composite modifier is used to prepare the functionalized modified polyester master batches, and then the polyester fibers are prepared, so that the product with excellent mechanical properties, flame-retardant properties, ultraviolet resistance and thermal-oxidative aging resistance can be obtained, the performance requirements of the polyester fibers in larger application scenarios can be better met, and the application prospect of the polyester fibers can be widened.

This invention relates to the field of fabric technology, specifically to a breathable antibacterial fabric and its preparation process, and sportswear made from this fabric. The preparation process of the breathable antibacterial fabric includes: preparation of a composite antibacterial agent, preparation of multifunctional polyester fibers, amination modification of phenolic lignin, modification treatment of polyacrylonitrile, and preparation of the breathable antibacterial fabric. The breathable antibacterial fabric of this invention consists of inner, middle, and outer layers: the inner layer is a blend of modal and other materials, which is skin-friendly, moisture-wicking, and antibacterial; the middle layer is a polyurethane film layer; the outer layer contains polyacrylonitrile composite fibers, which are antibacterial, crisp, and breathable. A composite antibacterial agent made of chitosan, cysteine, and copper nitrate imparts dual antibacterial properties to the fabric, reducing bacterial resistance. Ethylene treatment enhances the bonding of components, improving wash resistance and antistatic properties; the co-spinning of amination-modified phenolic lignin and polyacrylonitrile increases fiber strength, breathability, and UV resistance. This fabric is suitable for sportswear.

The application provides a battery fireproof partition plate and a preparation method thereof, a battery module and a new energy vehicle. The battery fireproof partition plate comprises a high-temperature heat-resistant insulating sheet, and the high-temperature heat-resistant insulating sheet is arranged on the outer side of a modified polyurethane fireproof core plate. The modified polyurethane fireproof core plate comprises component A and component B. Component A comprises 30-50 parts of medium-functionality polyether polyol, 1-5 parts of a catalyst, 1-10 parts of an organic phosphate, 10-25 parts of melamine phosphate, 1-10 parts of a low-functionality chain extender, 1-10 parts of pentaerythritol, 1-10 parts of aluminum hydroxide, 1-10 parts of hollow glass microbeads and 1-5 parts of a smoke suppressant. Component B comprises 20-40 parts of an isocyanate mixture. The battery fireproof partition plate not only has a good mechanical protection effect, but also improves the fireproof and heat insulation performance of the battery fireproof partition plate, that is, the fireproof and heat insulation time of the battery fireproof partition plate is 300 s at a temperature above 1300 DEG C, thereby effectively preventing the flame energy from spreading to the surrounding.

The application relates to a shooting jacket weaving process and relates to the technical field of textiles, and comprises the following steps: step S1, putting warp yarn raw materials on a warp beam and performing warping through a warping machine; step S2, passing the prepared warp beam through manual or equipment to perform healding; step S3, installing weft yarn on a water jet device; step S4, performing weaving on the warp yarn and the weft yarn through a water jet loom; when step S4 does not perform water jetting, the height position of the nozzle is a standby position higher than a working position, when water jetting is started, the nozzle is controlled to move downward to a working position of weft insertion height, and when water jetting is ended, the nozzle is moved upward to the standby position. Through upward deviation of the nozzle in the height direction, downward deviation of the front end and the tail end of water jet flow is compensated, so that the contact of the front end and the tail end of water jet flow on the warp yarn is reduced, the phenomenon of broken spandex of the warp yarn in the weft insertion process is reduced, the wetting amount of the warp yarn is reduced, the fabric is more easily dried in the later period, and the problems of decoloration and quality reduction of the warp yarn are also improved.

The application provides a cotton fabric anti-ultraviolet and anti-wrinkle finishing agent and a preparation method thereof, and relates to the technical field of textile auxiliaries. The cotton fabric anti-ultraviolet and anti-wrinkle finishing agent comprises a first finishing agent and a second finishing agent; the first finishing agent comprises the following raw materials in parts by weight: modified 2D resin 16-22 parts, hydroxyethyl chitosan-polylactic acid copolymer 3-8 parts, magnesium chloride hexahydrate 2.5-3.5 parts and water 100 parts; the second finishing agent comprises the following raw materials in parts by weight: carboxyl-terminated hyperbranched polyester 8-15 parts, bis-PEG-18 methyl ether dimethyl silane 5-10 parts and water 100 parts. The finishing agent can not only improve the ultraviolet protection factor and wrinkle resistance of the cotton fabric, but also has good washing resistance, still maintains good anti-ultraviolet and anti-wrinkle performance after multiple washes, and reduces the influence on the strength and hand feeling of the cotton fabric.

The application discloses a bacillus velezensis JL40 with bacteriostatic and antiseptic effects, and belongs to the field of microorganisms. The strain has good biological safety, and metabolically produced bacteriostatic substances can maintain stable bacteriostatic activity under extreme pH, high temperature and various organic solvent environments. Experiments show that JL40 has significant inhibitory effect on foodborne pathogenic bacteria such as escherichia coli, staphylococcus aureus, salmonella, and listeria monocytogenes, and also has strong inhibitory capacity on main pathogenic bacteria in aquaculture, such as edwardsiella tarda, aeromonas hydrophila and citrobacter braakii. In the aspect of agricultural application, the JL40 can reduce the infection of banana fruit spoilage bacteria and reduce the rotting of bananas. Therefore, the bacillus velezensis JL40 and its metabolites have broad application potential in replacing traditional chemical preservatives, inhibiting foodborne pathogenic bacteria and spoilage bacteria, prolonging the preservation of bananas after harvesting and the like.

This invention belongs to the field of biodegradable plastics technology, and provides a biodegradable film, its preparation method, and its applications. The biodegradable film of this invention, based on 100 parts by weight of raw materials, includes 74-99.998 parts of biodegradable polyester; 0.001-15 parts of eucommia gum; 0-2 parts of compatibilizer; 0.001-2 parts of opening agent; 0-2 parts of coupling agent; 0-2 parts of dispersant; and 0-8 parts of color masterbatch. Using biodegradable polyester as the raw material and eucommia gum as the functional additive, this invention results in a biodegradable film with excellent UV aging resistance, mechanical properties, barrier properties, and processing performance; it can significantly extend the safe period of crop mulching and can adapt to different soil conditions and agricultural operations. The resulting biodegradable film is green and safe during processing and use, and can be used not only in agricultural mulch films but also in shopping bags, garbage bags, food packaging, vegetable greenhouse films, injection-molded sheets, and injection-molded plates.

This application provides a benzoxazole-based polymer fiber and its preparation method. The preparation method of the benzoxazole-based polymer fiber provided in this application includes the following steps: mixing 4,6-diaminoresorcinol monomer, terephthalic acid monomer and / or terephthalic acid derivative monomer, and 2-(4-aminophenyl)-5-aminobenzimidazole monomer in an acidic solvent, and performing a polymerization reaction to obtain a polyhydroxyamide precursor spinning solution; spinning the polyhydroxyamide precursor spinning solution to obtain polyhydroxyamide precursor fiber; and thermally cyclizing the polyhydroxyamide precursor fiber to obtain benzoxazole-based polymer fiber. The benzoxazole-based polymer fiber prepared by this application has excellent comprehensive properties, effectively improving the compression resistance and UV resistance of conventional polybenzoxazole fibers, and enhancing the interfacial bonding force between the fiber and resin, thus representing a novel benzoxazole-based polymer fiber.

The invention belongs to the technical field of water conservancy and transportation engineering maintenance, and particularly relates to a ship lock concrete surface repairing coating in a seawater soaking environment and a construction method of the ship lock concrete surface repairing coating. Comprising a permeation anchoring bottom coating, a stress buffering middle coating and a super-weather-resistant protective surface coating which are sequentially arranged from inside to outside, and the permeation anchoring bottom coating is a bi-component epoxy-biomineralization composite system. The construction method of the ship lock concrete surface repairing coating comprises the steps that a base plane is diagnosed and cleaned; constructing a negative pressure microenvironment; carrying out in-situ vacuum dehydration and exclusion; negative-pressure prime coat leading-in is carried out; performing controlled ventilation and re-pressing permeation; and constructing a multi-layer system. According to the method, capillary water wedge resistance can be overcome under the condition that a dry base plane does not need to be stopped for a long time, deep penetration and high-strength anchoring of a repairing material to concrete microcracks are achieved, and the chloride ion penetration resistance and durability of a ship lock structure are greatly improved.

The utility model relates to the technical field of automobile nameplate provides a kind of anti-deformation automobile nameplate, including automobile nameplate body;Frame is fixedly connected on the outer surface of the automobile nameplate body;Multiple reinforcing ribs are fixedly set on the inner wall of the automobile nameplate body.The utility model, by the reinforcing rib in the inner wall of automobile nameplate body, the strength of automobile nameplate body whole is strengthened, while the material inside automobile nameplate body is composed of compression resistance layer, the compression resistance layer is graphene material, it has excellent mechanical properties, graphene reinforced composite material can significantly improve the strength, toughness and durability of traditional material, waterproof layer is composed of polyethylene macromolecule waterproof membrane, it has very high impermeability and aging resistance, so as to reach can have the characteristics of compression resistance, corrosion resistance, prevent automobile nameplate from being easily deformed when using, improve the comprehensive characteristics of automobile nameplate.

This invention relates to the field of coating technology, and more specifically, to an exposed hydrophobic flame-retardant fireproof coating, comprising the following steps: preparation of caffeic acid-intercalated calcium aluminum lanthanum hydrotalcite, preparation of a water-resistant flame-retardant composite, preparation of modified sodium lignosulfonate, and preparation of the exposed hydrophobic flame-retardant fireproof coating. The water-resistant flame-retardant composite effectively utilizes the flame-retardant properties of the caffeic acid-intercalated calcium aluminum lanthanum hydrotalcite. During high-temperature combustion, the caffeic acid-intercalated calcium aluminum lanthanum hydrotalcite forms a dense composite char layer structure, effectively isolating heat and oxygen, thus improving the flame-retardant properties of the fireproof coating. Simultaneously, it also possesses good hydrophobic protective properties, enhancing the hydrophobic properties of the exposed hydrophobic flame-retardant fireproof coating. The modified sodium lignosulfonate effectively improves the UV resistance of the exposed hydrophobic flame-retardant fireproof coating, extending the coating's UV aging resistance life.

The utility model discloses a kind of continuously wound HDPE reinforced pipe materials, belong to HDPE pipe material technical field, including pipe material, the pipe material surface is fixed with winding reinforcing rib, pipe material both ends are provided with connecting assembly;Connecting assembly includes plugboard, the pipe material one end both sides are fixed with plugboard, pipe material other end and plugboard corresponding position are set with insertion slot, pipe material both ends and insertion slot corresponding position are fixed with rectangular tube, slidingly connected with folding bar in rectangular tube, limit plate is fixed on folding bar inside rectangular tube, the utility model is pulled folding bar and drives limit plate to slide in rectangular tube by setting connecting assembly, spring is compressed, then another pipe material one end plugboard is inserted into insertion slot of pipe material one end, folding bar is loosened, spring is stretched and pushes folding bar one end into the clamping hole of plugboard, reach the effect of limiting and fixing between two pipe materials, by setting connecting assembly, pipe material is conveniently and quickly assembled and fixed.

This invention relates to the field of polymer material modification technology, specifically disclosing an anti-UV and antistatic polyolefin elastomer composite film and its preparation method. The preparation method of the composite film of this invention includes the following steps: (1) dissolving maleic anhydride-grafted polyolefin elastomer in 80%-90% of the total organic solvent and stirring until it becomes a colorless and transparent liquid; (2) mixing nano zinc oxide, aminated multi-walled carbon nanotubes, carbon black, polyethylene glycol and the remaining organic solvent, dispersing them evenly, and then adding them to the colorless and transparent liquid obtained in (1), stirring to obtain a mixture; (3) inverting the mixture obtained in (2) onto a flat plate and spreading it out, cooling and shaping it, and then drying it to obtain the anti-UV and antistatic polyolefin elastomer composite film. This invention achieves the enhancement of antistatic and anti-UV functions through polar modification of POE-g-MAH, synergistic design of functional fillers and solution dispersion, while retaining the original mechanical properties of POE.

This invention relates to the field of cable technology and discloses a composite insulated weather-resistant wire. The composite insulated weather-resistant wire of this invention is composed of a conductor core, a first insulation layer, a heat dissipation buffer layer, a second insulation layer, and a polyvinyl chloride (PVC) sheath material. The PVC sheath material includes 100 parts by weight of PVC, 35-50 parts by weight of plasticizer, 3-12 parts by weight of cyanolignin, and 5-20 parts by weight of filler, etc. The cyanolignin contains a large number of phenolic hydroxyl groups, which can capture oxygen free radicals, hydroxyl free radicals, etc. generated by the photo-oxidation free radical chain reaction, thereby terminating the photo-oxidation process and exhibiting excellent UV resistance. At the same time, the lignin introduces cyano groups, which can absorb ultraviolet light energy, transition from the ground state to the excited state, and return to the ground state, releasing energy. It also has excellent ultraviolet absorption performance. Under the synergistic effect, the UV aging resistance of PVC is significantly improved.

This application relates to the technical field of high-performance fiber production methods, providing a UV-resistant PBO fiber with excellent mechanical properties and its preparation method. The poly(p-phenylene benzodioxazole) fiber prepared by the method provided in this application has DHPBO segments regularly embedded in its molecular structure, and the proportion of DHPBO segments in the modified poly(p-phenylene benzodioxazole) fiber is less than or equal to 20%. Fibers spun from this method, with single DHPBO segments regularly embedded in the PBO macromolecule, exhibit a tensile strength at break of at least 30 cN / dtex. After irradiation for 100 hours in a dry environment at 50°C under a 340 nm UV light source, its tensile strength retention rate is still greater than 85%, and after irradiation for 300 hours, its tensile strength retention rate is still greater than 65%. Therefore, the PBO fiber prepared by the method of this application possesses excellent mechanical properties and UV resistance.

This utility model relates to the field of trim technology, specifically to an anti-ultraviolet polymer trim for the roof of a new energy vehicle. The trim includes a top piece, a W-shaped water-guiding lower piece, a buckle, and a wind-breaking fin structure. The W-shaped water-guiding lower piece is integrally connected to the bottom of the top piece, the buckle is integrally connected to both ends of the bottom of the top piece, and the wind-breaking fin structure is disposed on the top of the top piece. The trim, composed of the top piece, W-shaped water-guiding lower piece, buckle, and wind-breaking fin structure, provides an anti-ultraviolet trim structure for the water channels on both sides of the roof of a new energy vehicle. The wind-breaking fin structure improves the wind-breaking effect of the roof during driving, splitting high-speed airflow, reducing turbulence on the roof, and solving the problem of existing trims with single-channel drainage designs, where the channel is wide, the water flow is slow, the sand-carrying capacity is weak, and sand and gravel easily accumulate.