583 results about "UV resistance" patented technology

The invention relates to a preparation method of a high-durability multifunctional super-hydrophobic coating. According to the method, a mixed solution of an adhesive and hydrophobic modified nanoparticles is subjected to phase separation through non-solvent induction, so that the hydrophobic modified nanoparticles are coated on the outer layers of adhesive particles to form a uniform suspension, and finally, a micro-nano structure dispersed on the surface and inside of a coating can be obtained. After the surface layer is worn, the newly exposed surface still has an excellent micro-nano structure, namely super-hydrophobic performance; on the other hand, the nanotubes (wires) are added into the suspension, so that the mutual connection among the adhesive particles is further enhanced, and finally, the firm super-hydrophobic coating can be obtained. The super-hydrophobic coating provided by the invention has excellent durability, chemical stability, ultraviolet resistance and thermal stability, and functions of photo-thermal, electric heating, antibiosis, easy deicing, high thermal conductivity and the like, is suitable for various base materials, and is easy to realize large-scale preparation.

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 high-barrier polycrystalline silicon packaging film and a preparation method thereof, and relates to the technical field of packaging materials. The high-barrier polycrystalline silicon packaging film consists of a polyester film carrier and functional slurry, the functional slurry is prepared from the following raw materials in parts by weight: 15 to 25 parts of ethylene-vinyl alcohol copolymer, 10 to 18 parts of polyvinylidene chloride, 5 to 10 parts of modified nano montmorillonite, 8 to 15 parts of modified polylactic acid, 3 to 6 parts of tributyl citrate, 1 to 3 parts of antioxidant 1010, 1 to 3 parts of ultraviolet light absorber UV-531, 0.5 to 1.5 parts of nucleating agent NA-11, 1 to 2 parts of silane coupling agent KH-550 and 3 to 7 parts of modified silicon dioxide aerogel; 2 to 5 parts of vinyl trimethoxy silane, 1 to 3 parts of nano silver and 20 to 30 parts of deionized water. The high-barrier polycrystalline silicon packaging film has excellent barrier performance, and can effectively block oxygen, water vapor and the like. The polycrystalline silicon packaging film is good in mechanical performance, not prone to damage, antibacterial, antioxidant and anti-ultraviolet, the quality guarantee period of polycrystalline silicon can be prolonged, the product quality can be guaranteed, and the polycrystalline silicon packaging film has great application value in the field of polycrystalline silicon packaging.

The invention provides a coating spraying process for an aluminum alloy wheel. The coating spraying process comprises the following steps: S1, surface treatment; s2, spraying a bottom coating; s3, spraying a surface coating; s4, spraying a nano-particle reinforcing layer; s5, thermal plasma spraying post-treatment is carried out; according to the process method, the adhesive force can be improved, the cold plasma treatment technology can efficiently activate the surface of the aluminum alloy, the adhesive force between the coating and the base material is enhanced, and the risk that the coating is peeled off is reduced. And by adding the nano-particle reinforcing layer, the surface hardness of the coating is remarkably improved, and the coating has higher scratch resistance. And the corrosion resistance is enhanced, specifically, the corrosion resistance and the ultraviolet resistance of the aluminum alloy wheel are greatly improved through the optimized formula of the bottom coating and the surface coating, especially the application of a nano reinforcing material and a photocureable coating. The ultraviolet curing technology of the photocureable coating greatly shortens the curing time, the high-frequency production requirement is met, and the production efficiency is improved.

The invention relates to the technical field of power cables, in particular to a heat-aging-resistant crosslinked polyethylene insulated power cable and a preparation method thereof. The cable comprises conductor wire cores, an insulating layer, a filling layer, a composite function layer, a steel tape armoring layer and a sheath layer from inside to outside. The insulating layer is composed of semi-conductive crosslinked polyethylene, silicone resin, nano montmorillonite and an HALS light stabilizer; the filling layer is composed of plasticized glass fabric, polyphenylene sulfide and rare earth oxide; the composite functional layer sequentially comprises a heat-conducting inner layer, a flame-retardant middle layer and an anti-UV outer layer from inside to outside; the sheath layer is composed of polyolefin, white carbon black, ceramic silicone rubber, a flame retardant, polyethylene wax and an initiator. According to the cable, cross-linked polyethylene and silicone resin are preferably selected as heat-resistant materials, heat conduction / flame retardance / UV resistance / armored multi-layer synergistic protection is achieved, the mechanical barrier performance is improved, meanwhile, damage of thermal stress to internal materials is reduced, comprehensive improvement of thermal aging resistance is achieved, and the cable is suitable for high-temperature, high-humidity and frequent thermal cycle harsh environments.

The invention discloses a preparation method and application of an anti-ultraviolet breathable fabric, belongs to the technical field of fabric processing, and aims to solve the technical problem that the breathability and the anti-ultraviolet performance of a fabric in the prior art need to be further improved. The method comprises the following steps: soaking a modified fabric in a skin-friendly impregnation liquid, obtaining an impregnated material after padding is completed, and obtaining the breathable fabric by adopting a microwave evaporation process, namely preparing composite particles taking titanium dioxide particles as cores and porous silicon dioxide as shells, modifying active functional group epoxy groups on the surfaces of the composite particles, hybridizing polyurethane chain segments, and drying to obtain the breathable fabric. The silk fibroin is used as a nucleation center to promote self-assembly of the silk fibroin to form a spherical material, and the internal titanium dioxide particles are used as a microwave absorption center and an electrostatic spinning conductive network while undertaking the effect of an ultraviolet light absorber, so that the process efficiency is improved; the breathable fabric is obtained.

The invention discloses a special oiling agent for paddle-free DTY (Draw Textured Yarn) as well as a preparation method and application of the special oiling agent. The oiling agent comprises the following components in percentage by mass: 30-50% of a lubricant, 10-20% of an antistatic agent, 15-25% of a bundling agent, 1-5% of an antioxidant, 5-10% of an emulsifier and the balance of deionized water. According to the invention, the traditional sizing process is omitted in fiber processing. The oiling agent can significantly improve the fiber performance and reduce the production cost, has excellent environmental protection property, and is suitable for efficient production of synthetic fibers such as terylene, chinlon and the like. After being treated by the oiling agent, the oiling agent forms a compact protective film on the surface of the fiber, has bundling and lubricating functions, does not need additional sizing, can reduce fiber hairiness, improve breaking strength and remarkably improve the antistatic performance, and the oiling agent containing the metal salt multi-effect antistatic agent can remarkably improve the antistatic performance and also can improve the anti-static performance of the fiber. The anti-ultraviolet performance and the antibacterial performance of the fiber can be improved at the same time.

The invention provides an anti-ultraviolet composite particle, an anti-ultraviolet polyamide material and a preparation method and application of the anti-ultraviolet composite particle, the anti-ultraviolet composite particle comprises a nano-microsphere with a core-shell structure and a benzotriazole anti-ultraviolet agent adsorbed outside the nano-microsphere, the core of the nano-microsphere comprises zinc oxide and cerium oxide, and the core of the nano-microsphere comprises zinc oxide and cerium oxide. The shell layer comprises silicon dioxide; zinc oxide and cerium oxide are matched to serve as a core, silicon dioxide serves as a shell layer, and a benzotriazole anti-ultraviolet agent is adsorbed outside the shell layer, so that the obtained anti-ultraviolet composite particles have long-term and excellent anti-ultraviolet performance, and can be uniformly dispersed in polyamide resin; the obtained polyamide material also has long-term and excellent ultraviolet resistance, and meanwhile, the spinnability of the polyamide fiber is not influenced.

The invention discloses an electrostatic spinning preparation method of a multifunctional composite nanofiber membrane, which comprises the following steps: step 1, sequentially adding PVDF (Polyvinylidene Fluoride) and PLA (Polylactic Acid) into a first mixed solvent, and adding TiO2 while stirring to obtain a shell solution; melting n-octadecane to obtain a core layer solution; step 2, adding PVDF into a second mixed solvent to obtain a PVDF electrospinning solution; 3, the shell layer solution and the core layer solution are subjected to coaxial electrostatic spinning to form core-shell fibers, the PVDF electrospinning solution is subjected to single-shaft electrostatic spinning to form PVDF beads, high voltage is provided, and PVDFamp formed by compounding the core-shell fibers and the PVDF beads is formed on the aluminum foil; the invention relates to a PVDF / PLA / TiO2 (at) Oct composite nanofiber membrane. The material has good anti-ultraviolet, waterproof, breathable, self-cleaning and thermal regulation functions, and has excellent mechanical properties and degradability.

The invention relates to the technical field of materials adaptive to extreme environments, and discloses cross-scale gradient co-doped multifunctional composite aerogel as well as a preparation method and application of the cross-scale gradient co-doped multifunctional composite aerogel. The multifunctional composite aerogel is co-doped with ultraviolet light-screening agent nano-particles, infrared light-screening agent nano-particles and functional nano-particles in a cross-scale gradient manner, and is used for performing selective filtration and full-spectrum regulation and control on sunlight penetrating through the transparent aerogel; the ultraviolet light-screening agent particles are titanium dioxide nano particles; the infrared opacifying agent particles are indium tin oxide nanoparticles; and the functional nanoparticles are silver nanorods. The composite aerogel provided by the invention improves the anti-ultraviolet performance and high-temperature heat insulation performance of the aerogel and provides a function of enhancing photosynthesis of plants, and meanwhile, the transmittance of the transparent aerogel in the visible light band of sunlight is not obviously reduced.

The invention relates to a halogen-free flame-retardant TPU composite material and a preparation method thereof, and belongs to the technical field of high polymer materials. The halogen-free flame-retardant TPU composite material is prepared from the following components in parts by weight: 3 to 10 parts of a modified flame retardant, 2 to 10 parts of phenoxy cyclophosphazene, 80 to 100 parts of TPU particles, 90 parts of N, N-dimethylformamide, 0.8 to 1.2 parts of an ultraviolet light absorber and 2.5 to 3.5 parts of a lubricating agent, in the modified flame retardant, ammonium polyphosphate is heated into polyphosphoric acid, heat insulation and flame retardance are achieved, the comprehensive performance of the material is improved, and a quaternized structure and a carbamate bond synergistically enhance the flame retardance and heat resistance of the material; in the ultraviolet light absorber, cyanuric chloride and benzotriazole intermediates absorb ultraviolet rays, so that the damage of the ultraviolet rays to the material is reduced, and the ageing resistance and the toughness are enhanced; the halogen-free flame-retardant TPU composite material prepared by the invention not only has good flame-retardant and heat-resistant effects, but also has excellent ultraviolet resistance.

The invention relates to the technical field of architectural glass coatings, and discloses a functional coating for architectural glass and a preparation method of the functional coating. Comprising the following raw materials in parts by weight: 40-60 parts of water-based acrylic resin emulsion, 0.4-0.6 part of a defoaming agent, 5-15 parts of modified nano zinc oxide, 0.3-0.5 part of a flatting agent, 1.5-2.5 parts of a coalescing agent, 3-5 parts of a curing agent, 2-4 parts of a dispersing agent, 30-45 parts of deionized water and 3-5 parts of a thickening agent. An alternating structure formed by copolymerization of alkenyl ether (ester) and fluorine-containing ethylene is grafted on the surface of nano-zinc oxide, so that the surface of the nano-zinc oxide has fluorine-containing chain segments, and the excellent hydrophobic property of the chain segments and the antistatic capacity of the nano-zinc oxide cooperate with each other, so that the coating has super-hydrophobic property and self-cleaning capacity; the compatibility of the modified nano-zinc oxide and the coating is remarkably improved, and meanwhile, the nano-zinc oxide has a shielding effect on ultraviolet rays in long and medium wave bands, so that a coating film formed by curing the coating has excellent anti-ultraviolet performance.

The invention discloses a novel long-acting bird repellent and a preparation method thereof, and belongs to the technical field of chemical bird repelling. The bird repellent is composed of a core material and a wall material, the core material is a mixture of geraniol, cinnamyl aldehyde and allicin according to the mass ratio of 1: (1.2-1.5): (0.5-0.8), the wall material is modified beta-cyclodextrin and pumpkin seed protein nanoparticles, and the mass ratio of the geraniol, the cinnamyl aldehyde and the allicin is (5-7): (3-5): (1-3). The preparation method comprises the following steps: preparing the quaternary ammonium salt modified beta-cyclodextrin, including the core material, performing high-speed shearing emulsification on the quaternary ammonium salt modified beta-cyclodextrin and the pumpkin seed protein nano dispersion liquid, and performing freeze drying to obtain a final product. According to the invention, a stable and compact'molecular inclusion + physical barrier 'dual slow-release structure is constructed by utilizing the electrostatic interaction between the positively charged modified beta-cyclodextrin and the negatively charged protein nanoparticles, the release time of effective components is remarkably prolonged to 9 months or more, and the composite material has excellent rain wash resistance and ultraviolet resistance, and can be used for preparing a composite material with a good application prospect. And efficient, environment-friendly and long-acting bird repelling is realized.

The invention discloses a composite current collector containing a PTC material and a preparation method thereof, and relates to the technical field of current collectors, and the composite current collector comprises a polymer base film and copper metal layers located on the upper and lower surfaces of the polymer base film. The polymer base film is prepared from the following raw materials in parts by weight: 100 to 110 parts of modified polypropylene, 20 to 25 parts of modified PTC (Positive Temperature Coefficient) material, 1.2 to 1.4 parts of lubricant, 0.3 to 0.5 part of initiator and 14 to 18 parts of filler. According to the synthesized modified polypropylene, benzotriazole and an epoxy group are grafted into a polypropylene molecular chain, so that the binding power of a polymer base film and a copper metal layer and the corrosion resistance of the composite current collector are improved. The synthesized modified PTC material is obtained by loading a thiophene ring and DOPO on nano barium titanate, so that the composite current collector has relatively high ultraviolet resistance, flame retardance and thermal runaway resistance. The composite current collector containing the PTC material is high in use safety in a battery and worthy of popularization and application.

The invention discloses an anti-ultraviolet / salt-spray-resistant polyamide composite material and a preparation method thereof, and relates to the field of engineering plastic processing. The anti-ultraviolet polyamide composite material comprises the following components in parts by mass: 70-94 parts of polyamide resin, 5-20 parts of anti-ultraviolet polyamide master batch and 1-10 parts of polydopamine modified hydrotalcite nanoparticles, the anti-ultraviolet polyamide master batch is prepared from the following components in parts by mass: 55 to 99 parts of polyhexamethylene adipamide salt solution with the mass concentration of 5 to 50 percent, 1 to 50 parts of modified anti-ultraviolet agent salt and 0.3 to 1.5 parts of antioxidant; the modified anti-ultraviolet agent salt is obtained by reacting 5-50 parts of an amino-terminated modified anti-ultraviolet agent compound and 5-50 parts of dicarboxylic acid in absolute ethyl alcohol; the polydopamine modified hydrotalcite nano-particles comprise layered hydrotalcite nano-particles and a polydopamine coating layer on the surfaces of the layered hydrotalcite nano-particles. The anti-ultraviolet / salt-fog-resistant polyamide composite material has lasting and stable anti-ultraviolet performance and salt-fog-resistant performance, meanwhile, the excellent mechanical performance of the polyamide material can be kept, and the anti-ultraviolet / salt-fog-resistant polyamide composite material has high application value.

The invention relates to the technical field of composite materials, and discloses a polyurethane composite material for a solar photovoltaic power generation frame and a bracket. The polyurethane composite material comprises the following raw materials: a compound flame retardant, an isocyanate monomer, a catalyst, a small molecule chain extender, a functional additive, talcum powder, dioctyl phthalate, zinc stearate, and an antioxidant 168; wherein the compound flame retardant is prepared by introducing nitrogen-phosphorus flame retardant elements into the structure of epoxy-terminated polybutadiene, and undergoing polycondensation reaction with the isocyanate monomer, so that the nitrogen-phosphorus flame retardant elements are introduced into the polyurethane main chain, thereby giving the polyurethane composite material excellent flame retardant performance; and the functional additive is prepared by chemically connecting polyethylene fibers with fullerenes, thereby improving the anti-ultraviolet performance of the polyurethane composite material and effectively extending its service life.

The invention discloses a preparation method of a multifunctional cellulose-based fiber, and belongs to the technical field of multifunctional fibers.The preparation method comprises the steps that firstly, a phosphoric acid compound and a polyphenol compound are placed in a reactor to be evenly mixed and react to obtain phosphoric acid modified polyphenol, and then the phosphoric acid modified polyphenol is subjected to wet grinding to obtain the multifunctional cellulose-based fiber; then adding the phosphoric acid modified polyphenol dispersion liquid subjected to ball milling into the cellulose-based spinning solution, finally stirring, mixing and defoaming to obtain a spinning solution containing phosphoric acid modified polyphenol, and spinning and forming to obtain the multifunctional cellulose-based fiber. The phosphoric acid modified polyphenol enables the fibers to have better flame retardance, antibacterial property, ultraviolet resistance and oxidation resistance, does not influence the softness and comfort of the fibers, has better binding force with the fibers, and ensures that the finishing effect is lasting and stable. The technology has high environmental protection property and sustainability, and is suitable for production of functional textiles, sportswear and high-performance fibers.

The utility model discloses a breathable cool anti-UV fabric, which is formed by weaving warp yarns and weft yarns according to a one-up one-down plain weave, each cycle of the warp yarns contains 2-3 hollow reeds, the warp yarns comprise inner-layer yarns and outer-layer yarns, the outer-layer yarns are chinlon delustering yarns, the inner-layer yarns are spandex yarns, the weft yarns comprise first weft yarns and second weft yarns, and the first weft yarns and the second weft yarns are interwoven. The first weft yarn is the same as the warp yarn, the second weft yarn is alkali-soluble yarn, and in each cycle of the weft yarn, the yarn ratio of the first weft yarn to the second weft yarn is (15-18): (1-2). When the fabric passes through alkali liquor, the alkali-soluble yarns in the weft yarns are dissolved, so that the alkali-soluble yarns and vertical blanks formed by the hollow reeds in the warp direction form holes at nodes, the proportion of the alkali-soluble yarns is not more than 10%, and the use amount of the alkali-soluble yarns is small, so that the use amount of strong alkali is correspondingly reduced, environmental pollution caused by excessive use of the strong alkali is avoided, and meanwhile, serious beard edges and fuzzing balls at the holes are avoided. The fabric disclosed by the utility model can integrate the effects of ventilation, cool feeling, elasticity and UV resistance into a whole.

The invention relates to the technical field of high polymer materials, in particular to an EVA / nano-zinc oxide anti-ultraviolet car cover and a preparation method thereof. The invention aims to solve the problem that the mechanical strength and the ultraviolet resistance of the existing car cover are difficult to consider at the same time. Ethylene-vinyl acetate resin is used as a matrix, a silane coupling agent and hydroxyethyl methylacrylate surface modified and grafted composite nano-zinc oxide, maleic anhydride grafted EVA and a polyurethane modifier are subjected to melt blending, a TMPTA cross-linking agent is added, and the vehicle cover film is prepared through extrusion casting and ultraviolet curing. Wherein the polyurethane modifier is obtained by reacting polycaprolactone polyol with isophorone diisocyanate and adopting hydroxyethyl methylacrylate and 2, 2 '-methylenebis (6-tert-butyl-4-methylphenol) for end capping. The uvioresistant car cover prepared by the invention has excellent tensile strength, elongation at break, uvioresistant performance and adhesive force at the same time.

The invention discloses an anti-ultraviolet para-aramid fiber and a production process thereof, and belongs to the technical field of aramid fiber production. According to the spinneret plate, the cross-shaped spinneret holes are adopted, the obtained cross-shaped para-aramid fibers have large specific surface areas, numerous micropores or grooves are formed in the surfaces of the cross-shaped para-aramid fibers, sweat, moisture and the like on the skin surface can be rapidly released to the outside and rapidly evaporated, the surface of a fabric is kept dry and comfortable, and the surface of the fabric is smooth. The obtained cross-shaped para-aramid fiber is impregnated in an anti-ultraviolet aging agent impregnation liquid containing TiO2, under the synergistic effect of ultrasonic waves, the anti-ultraviolet para-aramid fiber can be obtained, the mechanical performance of the anti-ultraviolet para-aramid fiber is obviously higher than that of the para-aramid fiber treated through a conventional technology, and the anti-ultraviolet para-aramid fiber has the advantages of being good in anti-ultraviolet performance, good in anti-ultraviolet performance and the like. The hygroscopicity and the ultraviolet resistance of the fiber are excellent.

The utility model discloses an elastic nylon fabric which comprises a fabric layer, the fabric layer is formed by interweaving warp yarns and weft yarns in a plain weave mode, the warp yarns are of a ZS double wrap yarn structure formed by wrapping spandex with low-denier nylon, the twisting mode is that Z twisting and S twisting are conducted at the same time, and the twisting degree ranges from 1800 twists to 2000 twists. According to the elastic nylon fabric, a ZS double-wrapping structure is adopted in the warp direction of the elastic nylon fabric, the overall tension of wrapping yarn is ensured, and the elasticity and stability of the fabric are improved. Meanwhile, by adjusting the density in the warp direction and the weft direction, the fabric not only has an excellent cool feeling effect, but also has good anti-ultraviolet performance, and the air permeability is optimized.

The invention discloses a PP (polypropylene) anti-UV (ultraviolet) anti-aging master batch which comprises the following components: an ultraviolet light absorber, an inorganic nano material, an antioxidant, a cross-functional additive with flame retardance and ultraviolet resistance and polypropylene carrier resin, and relates to the technical field of anti-aging master batches. By adding the ultraviolet light absorber, the inorganic nano-material, the antioxidant, the cross-functional additive, the carbon black and other anti-aging auxiliaries into the PP material, the anti-UV anti-aging performance and mechanical performance of the PP material are remarkably improved, by adding the ultraviolet light absorber, the prepared master batch can effectively absorb ultraviolet light and convert the ultraviolet light into heat energy, and the anti-aging performance of the PP material is improved. The anti-ultraviolet PP material has the advantages that the anti-ultraviolet property of the material is further enhanced by combining the anti-ultraviolet PP material with the inorganic nano material nano TiO2, the mechanical property of the material is also obviously enhanced by the inorganic nano material nano TiO2, and the oxidation reaction of the PP material is effectively prevented by adding the antioxidant.

The utility model discloses a highly uvioresistant heat-shielding cool weft knitting fabric with a single-layer effect, which is formed by interweaving 50D / 34F fine-denier light-mesh dyed yarn polyamide DTY (draw textured yarn) filaments, 30D / 36F fine-denier light-mesh cation modified polyester DTY filaments and 20D polyurethane filaments, the highly uvioresistant heat-shielding cool weft knitting fabric with the single-layer effect comprises a front side and a back side, and the front side and the back side have the same pattern; the fabric body is provided with transverse white stripes, a dark grey plain weave and a dark grey grid-shaped front and back coil fabric layer; the front and back coil fabric layers with the transverse white stripes are formed by weaving 30D / 36F fine-denier light-mesh cation modified polyester DTY filaments and 20D polyurethane filaments, and the front and back coil fabric layers with the dark grey plain and dark grey latticed shapes are formed by weaving 50D / 34F fine-denier light-mesh dyed yarn polyamide DTY filaments and 20D polyurethane filaments; the fabric provided by the utility model not only has a special single-sided and single-layer appearance pattern effect and a high ultraviolet-resistant and heat-shielding function, but also has an ice skin cooling function.

The invention discloses UV-resistant perfluoropolyether siloxane as well as a preparation method and application thereof, the chemical structural formula of the perfluoropolyether siloxane is as shown in formula I, and in the formula I, m and n are independently integers greater than or equal to 1. According to the invention, two functional groups with different functions, such as the micromolecular UV absorbent and the amino siloxane, are respectively introduced into the dihydroxyl perfluoropolyether, so that the UV resistance, the wear resistance and the like of the coating are remarkably improved, and excellent hydrophobic and antifouling effects are achieved. In addition, due to the existence of multiple silicon-oxygen bonds, the adhesive force of the coating can be effectively enhanced, and the durability is improved. And the formula I of the # imgabs0 # is shown in the specification.

The invention relates to a high-flame-retardant zero-dripping low-smoke halogen-free photoelectric composite cable for ships and maritime work platforms. The high-flame-retardant zero-dripping low-smoke halogen-free photoelectric composite cable sequentially comprises an electric unit, at least one optical fiber unit, an inner protective layer, an armor layer and an outer protective layer from inside to outside. The outer surface of the electric unit, the outer surface of the optical fiber unit, the inner protective layer and the outer protective layer are all prepared from a flame-retardant sheath material; the flame-retardant sheath material comprises the following components in percentage by mass: 15-35% of EVA (Ethylene Vinyl Acetate); 1%-10% of EPD M; 1% to 10% of LDPE; 1% to 10% of HDPE; 1%-10% of a compatilizer; 0.1%-0.5% of an antioxidant; 20%-50% of an inorganic flame retardant; 5%-10% of a charring agent; the charring agent is prepared by mixing montmorillonite, red phosphorus and melamine cyanurate according to a ratio of 2: 1: 1. The photoelectric composite cable designed by the invention has the characteristics of high flame retardance, low smoke and zero dripping during combustion, no halogen, UV resistance, hydrolysis resistance and the like.

The invention relates to the technical field of packaging paper, and discloses environment-friendly decorative paper and a preparation method and application thereof.The environment-friendly decorative paper comprises a base material, and an EB functional layer is formed on the base material; the EB functional layer is a coating layer formed by curing a functional coating through EB radiation curing; the functional coating is prepared from polyurethane and acrylic resin in a weight ratio of (1: 1)-(1: 4). According to the preparation method, the EB functional layer is prepared on the base material through the EB curing technology to replace a traditional high-temperature curing technology, the energy consumption problem of high-temperature curing can be avoided, and the preparation process of the EB functional layer is efficient. Besides, a formaldehyde-free environment-friendly process is realized, and an EB curing technology is combined, so that good bonding force can be formed between the EB functional layer and a base material, the EB functional layer has excellent wear resistance, scratch resistance and ultraviolet resistance, the service life of the decorative paper can be effectively prolonged, and the decorative paper is particularly remarkable in outdoor or high-use-frequency application.

The invention discloses high-temperature-resistant and anti-yellowing LED (light-emitting diode) packaging glue which comprises glue A, glue B and powder C, the adhesive A comprises epoxy resin, a flexibilizer, a flatting agent, a main antioxidant, an auxiliary antioxidant, a diluent, a defoaming agent and a silane coupling agent; wherein the main antioxidant is a hindered phenol antioxidant; the auxiliary antioxidant is a phosphite ester antioxidant; the glue B comprises an anhydride curing agent and an accelerant; and the powder C comprises diffusion powder and matte powder. The hindered phenol antioxidant and the phosphite antioxidant have a synergistic effect, and the phosphite antioxidant reduces an oxidation product of the hindered phenol antioxidant, namely a benzoquinone chromophoric group, so that the color of a system is protected, and the long-term stability of the material is ensured; the heat resistance, the aging resistance, the oxidation resistance and the UV resistance of the packaging glue are improved, so that the packaging glue does not generate color change, the color of a system is protected, the long-term stability of a material is ensured, the yellowing delaying rate reaches 50% or above, and the high temperature resistance can reach 260 DEG C.

The invention discloses an antistatic fabric and a preparation method thereof, and relates to the technical field of fabrics. When the antistatic fabric is prepared, firstly, polyamide is grafted with 2-chloro-6-vinylpyridine under the action of an initiator, then the polyamide reacts with 2-amino-4-methoxypyrimidine-5-boronic acid pinacol ester, methoxyl is removed through boron tribromide, then the polyamide reacts with 2-diphenylphosphinobenzaldehyde, and modified polyamide is obtained; secondly, grafting tea polyphenol on the multi-walled carbon nanotube which is firstly treated by nitric acid and then treated by thionyl chloride, and then reacting with 4-[2, 2 ': 6', 2 ''-terpyridyl]-4 '-yl-thiophenol to obtain a modified multi-walled carbon nanotube; and finally, carrying out melt spinning on the modified polyamide, the modified multi-walled carbon nanotubes and the antibacterial agent to obtain antistatic fibers, and weaving the antistatic fibers to obtain the antistatic fabric. The antistatic fabric prepared by the invention has excellent flame retardance, electrical conductivity, ultraviolet resistance and oxidation resistance.

To provide an article that may be provided with a surface-treated layer with superior liquid repellency and UV resistance.SOLUTION: An article is provided, comprising a base material and a layer formed on the base material, the layer having a diffraction peak near 2θ=21.0° as observed in GIXD measurement.SELECTED DRAWING: None

The invention discloses a high-toughness anti-ultraviolet PET (Polyethylene Terephthalate) fiber and a preparation method thereof, belongs to the technical field of polyester fibers, and is used for solving the technical problem that the mechanical strength, the ultraviolet resistance and the moisture absorption and quick drying performance of the PET fiber in the prior art need to be further improved. The invention relates to a high-toughness anti-ultraviolet PET (Polyethylene Terephthalate) fiber which is prepared from modified PET, modified polyester, modified montmorillonite, epoxy modified polysiloxane and an additive in a weight ratio of (55-60): (30-35): (10-16): (20-30): (3-5), according to the invention, the modified montmorillonite is used as a heterogeneous nucleation point, and a PET molecular chain composed of the modified PET, the modified polyester and the epoxy modified polysiloxane is induced to be arranged in a height orientation manner along the drafting direction, so that the breaking strength of the PET fiber is improved, a relatively high elongation at break is maintained, and the anti-ultraviolet effect and the moisture-absorbing and quick-drying performance of the PET fiber are improved.