595 results about "Ultraviolet resistance" patented technology

Disclosed in the present invention are a fluorosilicone-modified low-surface-energy antifouling coating and a preparation method therefor. The coating comprises the following components in parts by weight: 11-15 parts of butyl acrylate, 3-4 parts of dodecafluoroheptyl methacrylate, 3-4 parts of vinyl-terminated polydimethylsiloxane, 3-4 parts of 2-hydroxy-4-acryloyloxybenzophenone, 30-38 parts of methyl isobutyl ketone, 0.15-0.25 parts of azobisisobutyronitrile, 0.1-0.2 parts of sodium hydroxide, 2-3 parts of modified titanium dioxide nanoparticles, and 0.5-1.5 parts of 3-aminopropyltriethoxysilane. In the present invention, vinylpentamethyldisiloxane reacts with decamethylcyclopentasiloxane to prepare vinyl-terminated polydimethylsiloxane; a titanium dioxide precursor is mixed with polydopamine nanoparticles for modification to prepare modified titanium dioxide nanoparticles; and then the components above are mixed to prepare the fluorosilicone-modified low-surface-energy antifouling coating. The coating has low surface energy and good adhesion and ultraviolet resistance.

The invention provides a modified polyimide fiber and a preparation method and application thereof, and the preparation method comprises the following steps: S1, adding a polyimide fiber into an alkali solution for reaction, cleaning a reactant with acid and alkaline alcohol, and drying to obtain an activated polyimide fiber; s2, adding the activated polyimide fiber into an alkaline alcohol solution, adding into a first silane coupling agent, carrying out modification reaction, adding modified epoxy resin, and mixing to obtain a bottom layer component; s3, adding the activated polyimide fiber into an alkaline alcohol solution, adding a second silane coupling agent and a hyperbranched polymer, and carrying out a modification reaction to obtain a surface layer component; and S4, covering the bottom layer component with the surface layer component, drying to obtain the modified polyimide fiber, and optimizing the coating to obtain the modified polyimide fiber with high mechanical property, excellent atomic oxygen resistance and ultraviolet resistance and environmental adaptability.

The invention belongs to the field of functional textile materials, and provides a cool-feeling anti-ultraviolet nylon fabric and a preparation method thereof, and the cool-feeling anti-ultraviolet nylon fabric adopts a design scheme of combining a boron nitride / titanium dioxide composite filler with a beta-hydroxyl ether type ultraviolet absorption silane coupling agent surface modification technology. Uniform loading of hexagonal boron nitride on the surface of anatase type titanium dioxide is realized through an in-situ heat treatment process, a composite structure with heat conduction and ultraviolet shielding functions is constructed, and a complete process flow of master batch preparation, melt spinning, weaving, after-treatment and the like is matched; the ultraviolet protection coefficient UPF of the fabric is not lower than 40, the UPF retention rate after 20 times of household washing cycles is not lower than 80%, and the cool feeling qmax at the contact moment is not lower than 0.20 W / cm, the technical problem that an existing nylon fabric is insufficient in ultraviolet resistance and cool feeling function is solved, and the fabric has wide industrial application value.

The invention discloses a high-corrosion-resistance powder coating and a preparation method thereof, and belongs to the technical field of powder coatings. Through modification of the resin system, the ultraviolet absorbent modified epoxy resin and the weather-resistant polyester resin are compounded, so that the ultraviolet resistance and the weather resistance of the resin system are remarkably improved, and the corrosion resistance reduction caused by light aging is avoided; the flake graphene forms an excellent physical barrier to block corrosion medium permeation, then chemical passivation of zinc phosphate is combined to inhibit electrochemical corrosion, the synergistic effect is achieved, the corrosion resistance is synergistically enhanced from the physical and chemical angles, the path of the corrosion medium is further prolonged in combination with the laminated structure of the glass flakes, and the corrosion resistance is improved. And meanwhile, the filler A and the filler B can also play a role in enhancing the mechanical strength of the coating, so that the powder coating with high corrosion resistance can be obtained on the whole.

The invention belongs to the technical field of textile, and relates to an efficient antibacterial fabric for preparing underwear and a dyeing and finishing method and application thereof.The provided antibacterial fabric is weft-knitted bird eye double-faced knitted fabric and is composed of polyester, cotton and modal fibers, the surface density is 180 g / m, surface yarn of the antibacterial fabric is hollow polyester fibers with special-shaped sections, and the surface yarn of the antibacterial fabric is hollow polyester fibers with special-shaped sections. The lining yarn is formed by weaving dacron and blended yarn according to the proportion of 2: 1. According to the method, dyeing and finishing of the antibacterial fabric, fabric weaving and ergonomic sewing are combined, the fabric which has efficient antibacterial performance, good moisture permeability and ultraviolet-proof performance and high color fastness is obtained, and the prepared antibacterial clothes are high in quick-drying performance, comfortable to wear and high in environmental adaptability.

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 relates to the technical field of basalt fiber reinforced composite material pipelines and preparation methods thereof, and discloses a pipeline named as a basalt fiber reinforced composite material pipeline and a preparation method thereof and a preparation method thereof. The invention aims to overcome the defects of continuity, interface bonding and mechanical properties of the conventional basalt fiber reinforced composite material pipeline. The pipeline is composed of a lining layer, a basalt fiber winding reinforcing layer and an outer protective layer, the reinforcing layer is formed by compounding basalt fiber bundles subjected to surface treatment and a resin matrix, and the reinforcing layer is of a multi-layer structure with different winding angles. The preparation method comprises the following steps: roughening the inner lining layer, infiltrating and accurately winding the fiber bundles, performing multi-section curing and forming the outer protective layer. According to the scheme, the macroscopic mechanical property of the pipeline is remarkably improved, the interface combination of fibers and a matrix is optimized, the integrity of the fibers is kept, efficient preparation is achieved, and the pipeline has the advantages of being excellent in corrosion resistance and ultraviolet resistance, long in service life and the like.

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 invention relates to a wear-resistant waterproof cable sheath material and a preparation method thereof, and belongs to the technical field of cable materials. The cable sheath material is prepared by self-making a modifier and blending the modifier with a fumed silica modified filler modified by a perfluoroalkyl silane coupling agent, FEP and polyethylene. Perfluoroalkyl of the modified filler and FEP cooperate to improve the water resistance and corrosion resistance of the material; the modifier can enhance the polarity of a polyethylene matrix, forms polarity gradient matching with other components of the system, enhances the interfacial compatibility, and improves the mechanical properties of the material; a benzotriazole structure in the modifier can prevent the material from being damaged by ultraviolet irradiation; besides, during combustion, phosphorus in the material forms a carbon layer on the surface, nitrogen in benzotriazole serves as a foaming agent to expand the carbon layer, efficient flame retardance is achieved synergistically, the material has excellent ultraviolet resistance and flame retardance, and the service life of the material is prolonged.

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 a strain of Blastococcus atamensis YC-1 and application of the strain of Blastococcus atamensis YC-1, and belongs to the field of microbial strains. The streptococcus sp. YC-1 provided by the invention has high antioxidant activity and also has the capability of producing DHHB (docosahexaenoic acid); meanwhile, the YC-1FLE is prepared by adopting absolute ethyl alcohol as a solvent, has no toxicity to HaCaT cells, is relatively high in reducing capacity, has a scavenging effect on DPPH free radicals, ABTS cation free radicals and hydroxyl free radicals, has a tyrosinase inhibition effect and shows good antioxidant and whitening effects; when the YC-1FLE is applied to the sunscreen lotion, the sunscreen coefficient of the sunscreen lotion containing the YC-1FLE is obviously higher than that of a blank control group, which shows that the YC-1FLE has better ultraviolet resistance. Therefore, the strain and the lysate extract of the fermentation product of the strain have huge application potential in the field of cosmetics.

The application discloses a light-weight moisture-conducting functional fabric and a preparation method thereof, and relates to the technical field of textiles.The light-weight moisture-conducting functional fabric comprises an inner layer and an outer layer, the inner layer is obtained by blending polyester fibers and nylon special-shaped cross-section fibers, and the outer layer is obtained by blending modified polypropylene fibers and hollow polyester fibers; the modified polypropylene fibers are obtained by melting and spinning the mixture of polypropylene chips and modified jade powder and then stretching; the prepared fabric not only has the characteristics of light weight and one-way moisture-conducting capability, can quickly discharge sweat outside the body, realizes dry and cool isolation between the skin and the outside world, and has multiple health protection functions such as persistent antibacterial property, efficient ultraviolet resistance and contact cool feeling.

The invention belongs to the technical field of high polymer materials, and particularly relates to a polylactic acid blended composite material applied to automotive interiors and a preparation method thereof. The raw material of the material is polylactic acid modified ionomer or polylactic acid modified copolymer; a biodegradable polyester or elastomer; a chain extender; an anti-hydrolysis agent; an antioxidant; a nucleating agent; and a lubricant. The preparation method comprises the following steps: carrying out vacuum drying on the polylactic acid ionomer or the polylactic acid modified copolymer and the biodegradable polyester or the elastomer; uniformly mixing the dried polylactic acid ionomer or polylactic acid modified copolymer, biodegradable polyester or elastomer, a chain extender, an antioxidant and a lubricant to obtain a mixture; melting, blending and extruding the mixture; water in the material is pumped out at the tail end of an extruder in a vacuumizing mode, and the polylactic acid blending composite material is obtained after the procedures of water cooling, grain-sized dicing and drying. The material disclosed by the invention has excellent characteristics of high rigidity, high toughness, heat resistance, ultraviolet resistance, antibacterial property and the like, and can be applied to the field of automotive upholstery.

The invention belongs to the technical field of compounding, and particularly relates to an MOFs / para-aramid pulp composite material and a preparation method and application thereof.The preparation method comprises the steps that under the room temperature condition, the surface of para-aramid pulp is modified through a dopamine self-polymerization method, and modified para-aramid pulp is obtained; soaking the modified para-aramid pulp in a zinc ion solution to obtain a mixed solution; and adding the mixed solution into the organic ligand solution to obtain the MOFs / para-aramid pulp composite material. The preparation method has the advantages of mild reaction conditions and simplicity in operation; the MOFs / para-aramid pulp composite material has excellent thermal stability, excellent ultraviolet resistance and relatively high specific surface area, and has important application value in the fields of friction sealing and manufacturing of aerospace thermal insulation systems or lightweight and heat-resistant parts.

The invention discloses a photovoltaic cable sheath material with ultraviolet aging resistance and long service life. Comprising the following components in parts by weight: 100 to 120 parts of high-density polyethylene, 0.3 to 0.5 part of a benzotriazole ultraviolet light absorber, 0.5 to 0.8 part of a hindered amine light stabilizer, 0.2 to 0.5 part of an antioxidant, 3 to 5 parts of salicylate intercalated magnesium aluminum hydrotalcite, 0.02 to 0.05 part of cerium acetylacetonate, 2 to 4 parts of rutile type nano titanium dioxide, 3 to 5 parts of a compatilizer and 0.5 to 1 part of a dispersant. The photovoltaic cable is prepared from the anti-ultraviolet aging long-life photovoltaic cable sheath material, an insulating layer material and a conductor, so that the obtained photovoltaic cable sheath material and the photovoltaic cable have excellent anti-ultraviolet capability and thermal aging resistance, and have relatively long service life.

The invention relates to the field of cables, and discloses a flame-retardant extruded and insulated low-voltage power cable, which comprises a conductor core, an insulating layer, a filling layer, an inner sheath layer, an armor layer and an outer sheath layer, and is characterized in that the sheath layer is made of low-density polyethylene, ethylene propylene diene monomer, ethylene-tetrafluoroethylene copolymer, modified halloysite nanotubes, modified ammonium polyphosphate and auxiliaries; the modified halloysite nanotube is prepared by loading titanium dioxide on the surface of a halloysite nanotube by using a sol-gel method and then grafting octa-aminopropyl polyhedral oligomeric silsesquioxane; the modified ammonium polyphosphate is prepared by grafting a functional silane coupling agent prepared by reacting a cyclotriphosphazene derivative with 3-chloropropyltrimethoxysilane with polysiloxane-coated ammonium polyphosphate, and the cyclotriphosphazene derivative is prepared by reacting 3-amino-1, 2, 4-triazole with hexachlorocyclotriphosphazene and then coordinating with cobalt ions by adopting a hydrothermal method. Therefore, the material is endowed with good mechanical properties, ultraviolet resistance, heat and wear resistance, flame retardance and antibacterial activity.

The invention belongs to the technical field of automobile paint surface protective films, and particularly relates to an environment-friendly heat-insulating automobile paint surface protective film and a preparation method thereof. The environment-friendly heat-insulating automobile paint surface protective film comprises a protective film, a self-cleaning coating, a first TPU base material, a heat-insulating coating, a second TPU base material, a pressure-sensitive adhesive layer and a release film from top to bottom, the heat-insulating coating comprises the following raw materials in parts by mass: 100 parts of waterborne polyurethane resin emulsion, 15-25 parts of a fatty acid ester modified heat-insulating compound, 1-2 parts of an ultraviolet light absorber and 5-8 parts of an auxiliary agent; the heat insulation compound comprises glass fiber powder, hollow glass beads and nano rare earth oxide; the environment-friendly heat-insulating automobile paint surface protective film provided by the invention has the advantages of high light transmittance, good heat-insulating property, good ultraviolet resistance, good ductility and environment friendliness.

The utility model discloses a high-water-resistance metal composite backboard which comprises a water-resistance layer, two sides of the water-resistance layer are respectively bonded with an insulating layer through a glue layer, and the outer side of the insulating layer is provided with a coating. The utility model also discloses a photovoltaic assembly. According to the utility model, the waterproof layer is made of the metal material with low water permeability and can effectively prevent water vapor from invading, and the two sides of the waterproof layer are respectively bonded with the insulating layers through the glue layers, so that the insulation treatment of the waterproof layer is realized, and the situation of electric leakage is avoided; according to the utility model, the functional coating is arranged, for example, the coating is made of a mixture of fluoride and an anti-ultraviolet additive, so that the weather resistance of the composite backboard body can be improved, and different pigments can be added according to the requirements of the photovoltaic module body on colors, so that the appearance of the composite backboard body is diversified.

The invention relates to the technical field of polymer composite materials, in particular to a cable polymer composite material for a wind turbine blade, which is prepared from the following raw materials in parts by weight: a polymer base material; a reinforcing material; a polymer modified material; a functional additive; a performance modifier; the functional additive is prepared from an anti-ultraviolet agent, an antioxidant, a silane coupling agent and nano titanium dioxide. According to the invention, the epoxy modified polyether-ether-ketone and bisphenol A epoxy resin compounded base material is matched with a continuous glass fiber, carbon fiber chopped strand and nano silicon nitride multi-element reinforcing system, so that the core short board of insufficient mechanical properties of the traditional material is thoroughly solved, and a magnesium hydroxide, aluminum hydroxide, expanded graphite and nano montmorillonite compounded flame-retardant system is also selected, so that the flame-retardant performance of the material is greatly improved. The flame-retardant cable material is high in flame retardance, free of toxic gas release, capable of meeting the environment-friendly requirement, capable of improving the material interface bonding force and long-term service reliability and capable of meeting the requirement for the service life of 20 years or above of wind power blade cables.

The invention relates to the technical field of anti-drag films, and particularly discloses a high-strength durable anti-drag film and a preparation method thereof.The high-strength durable anti-drag film is prepared by adopting an antioxidant and CTAB-montmorillonite to modify TPU to form a substrate film and improve the strength and aging resistance of a material, then adopting a block copolymerization mode to prepare a block prepolymer containing a benzene ring and a siloxane chain segment, and finally preparing the high-strength durable anti-drag film. According to the present invention, the maleic anhydride grafted SEBS is adopted as the raw material, such that the heat resistance and the strength of the material can be improved while the ultraviolet resistance and the resistance reducing performance of the material can be improved, the adhesive containing the maleic anhydride grafted SEBS is prepared, and during curing, the interface bonding strength, the peeling strength and the strength and the heat resistance of the material can be enhanced through the physical entanglement and chemical bonding form.

The invention discloses application of cordyceps javanica Bd01 and a dispersible oil suspending agent thereof to prevention and control of spodoptera frugiperda, and relates to the technical field of biology. The research finds that the cordyceps javanica Bd01 has a strong infection lethal effect on larvae of spodoptera frugiperda at all ages, the pupation rate and eclosion rate of the larvae can be remarkably reduced, and the breeding cycle of pests can be effectively blocked. The invention further develops a dispersible oil suspending agent, and the suspending rate is effectively improved through formula optimization. The dosage form takes soybean oil as a dispersion medium, does not contain harmful solvents such as methylbenzene, is free of dust pollution and is friendly to operators and the environment, and ascorbic acid is added to improve the ultraviolet resistance of spores and prolong the effective period of the pesticide effect. In addition, the preparation also has a certain control effect on caffeinidae, is wide in application scene, provides a new scheme for green control of spodoptera frugiperda, solves the problems of chemical pesticide resistance and residue, and accords with the development requirements of green agriculture.

The invention discloses composite biological regenerated asphalt which comprises the following components in parts by weight: 66-85 parts of aged asphalt; 2 to 6 parts of modified ZDC; 5-20 parts of activated lignin; 8 parts of bio-oil; the modified ZDC is obtained by carrying out surface modification on zinc diethyldithiocarbamate through a silane coupling agent; the activated lignin is obtained by activating lignin through glycerol; the composite biological regenerated asphalt is prepared by compounding aged asphalt, modified zinc diethyldithiocarbamate (ZDC), activated lignin and bio-oil in parts by weight, the ZDC realizes an anti-oxidation effect by capturing free radicals, the lignin absorbs ultraviolet light by virtue of a benzene ring structure, and phenolic hydroxyl groups capture free radicals to realize an anti-ultraviolet-anti-oxidation synergistic function; the bio-oil supplements lost light components of the aged asphalt and reduces the penetration degree and the softening point to realize regeneration adjustment, and the anti-aging performance and the regeneration effect of the composite asphalt are remarkably improved through the synergistic effect of the bio-oil, the light components and the regeneration point.

The invention belongs to the technical field of high polymer materials, and discloses copolyester based on 4-aryl-epsilon-caprolactone and lactide as well as a preparation method and application of the copolyester. The copolyester is composed of a lactide structural unit and a 4-aryl-epsilon-caprolactone structural unit. A rigid benzene ring is introduced into a molecular chain, so that the synergistic balance of toughness and rigidity is successfully realized, and the toughness is remarkably improved while the high strength of the material is maintained. In addition, the introduction of phenyl endows the material with intrinsic ultraviolet resistance, the material can be used as an efficient ultraviolet absorbent, protective spherical protrusions are formed on the surface of the material under ultraviolet irradiation, and photooxidative degradation is effectively delayed. The material can be widely applied to the fields of high-performance degradable packaging, biomedical materials, outdoor articles, textiles and the like.

The invention relates to the technical field of knitted fabrics, in particular to a production method of a breathable dry and comfortable fabric, which comprises the following steps: step 1, preparing the following raw materials in parts by weight: 35-40 parts of modified modal fiber filaments, 25-30 parts of functional fiber filaments and 10-15 parts of polyester fiber filaments; step 2, processing the raw materials through an air jet texturing method to obtain blended yarns, and then weaving the blended yarns by adopting a circular knitting machine to obtain the breathable dry and comfortable fabric. According to the breathable dry and comfortable fabric, the functional fiber filaments are matched with the modified modal fiber filaments and the polyester fiber filaments to be processed through an air jet deformation method, then the fabric is woven through a circular knitting machine, and the obtained breathable dry and comfortable fabric has breathability, perspiration, softness and ultraviolet resistance, and the comprehensive performance of a product is obviously coordinated and improved; and the water-resistant stability effect of the product is remarkable.

The application belongs to the technical field of waterproofing of building engineering, and provides a high-strength puncture-resistant railway tunnel waterproofing and draining plate and a preparation method thereof, according to mass percentages, raw materials include: 30-35 wt% polyolefin elastomer POE, 40-45 wt% high-density polyethylene, 20-30 wt% antioxidant reinforcing master batch; the antioxidant reinforcing master batch includes, by weight parts: 6-8 parts of nano-SiO2, 20-28 parts of EPDM-g-MS, 60-70 parts of linear low-density polyethylene, 1-3 parts of antioxidant, and 1-3 parts of ultraviolet resistance agent. The railway tunnel waterproofing and draining plate provided by the application not only satisfies all the performances specified in Q / CR562.3-2018, but also has more excellent tensile properties and puncture resistance.

The invention discloses an anti-UV hydrolysis-resistant PET functional master batch and a preparation method thereof, UV absorbing groups such as isophorone diester and 2, 4-dihydroxybenzoic acid are introduced to enhance the UV resistance, and neopentyl glycol and trimethylolpropane are introduced to enhance the hydrolysis resistance of a molecular chain. Besides, the Beta molecular sieve, the zinc metaborate and other auxiliaries are utilized, so that the uniform distribution of the light stabilizer and the ultraviolet light absorber in the molecular structure is improved, and the problem that the UV absorption performance and the hydrolysis resistance of the film are not uniform due to molecular arrangement change in the stretching process is effectively avoided. The ultraviolet resistance, the strength and the hydrolysis resistance of the film are improved through the synergistic effect of all the components in the formula, so that the application requirements of PET products in the fields of packaging, electronics, photovoltaics, automobiles, medical instruments and the like are met.

The invention relates to the field of packaging bags, and discloses an antibacterial composite bag for food and a preparation method thereof, the antibacterial composite bag for food comprises low density polyethylene, a functional additive, modified tetrapod-like zinc oxide whiskers and a lubricant; according to the functional additive, lignin nanoparticles are used as a core, polydopamine is used as a shell, graphene oxide is assembled to prepare a composite material, and gamma-aminopropyltriethoxysilane is used for amination grafting of the composite material. The nano cuprous oxide is loaded on the aminated composite material by adopting a one-step reduction method and reacts with glycidyl dodecyl dimethyl ammonium chloride; the modified tetrapod-like zinc oxide whisker is prepared by coating the surface of the tetrapod-like zinc oxide whisker with silver-doped zinc oxide through a hydrothermal synthesis method, and by adding the functional additive and the modified tetrapod-like zinc oxide whisker, the matrix material is endowed with good mechanical property, antibacterial property, ultraviolet resistance, heat resistance and flame retardance.

The application discloses a kind of lignin modified PBS biodegradable plastics and preparation method thereof, belong to biodegradable technical field.The lignin modified PBS biodegradable plastics includes the following mass parts of components:PBS 100 parts, acetic ether fractionated lignin 5~10 parts.In the application, hydrogen bond is formed between the polar functional group of acetic ether fractionated lignin and PBS, and the low molecular weight reduces the steric hindrance and chain length in the process of stretching, reduces the agglomeration of lignin, improves the compatibility of lignin and PBS, and further improves the mechanical properties of PBS composite material, greatly improves the ductility of PBS.The lignin modified PBS biodegradable plastics provided by the application has good mechanical properties, ultraviolet resistance, antibacterial property, light-heat conversion performance and light-heat antibacterial performance.The preparation method is simple, low energy consumption, low toxicity, and the solvent can be recycled, which saves resources and energy to a certain extent, and responds to the goal of green and sustainable development.

The application relates to the field of exterior wall plate building materials, and particularly relates to an ultraviolet-resistant exterior wall plate modular splicing structure, which comprises a solid wood bottom plate, the top of the solid wood bottom plate is sleeved with a transparent plate, the inside of the solid wood bottom plate is integrally provided with a mounting groove, and the mounting groove is further provided with a quick-change mechanism and a splicing mechanism; the quick-change mechanism comprises a lining plate, a manual assembly, an extension assembly and a same-direction assembly; the splicing mechanism comprises a plurality of dovetail blocks and a plurality of dovetail grooves; the ultraviolet-resistant exterior wall plate modular splicing structure seals and buckles a UV diaphragm on the surface of a soundproof plate and the lining plate, has excellent ultraviolet resistance, and further adds a sealing ring between the transparent plate and the solid wood bottom plate, so that rainwater and dust cannot enter the UV diaphragm to corrode the UV diaphragm, the waterproof performance of the UV diaphragm is remarkably improved, the service life of the UV diaphragm is prolonged, and the overall ultraviolet resistance time of the exterior wall plate is further prolonged.

The application discloses waterproof ultraviolet-resistant nylon fabric and a processing technology thereof and relates to the technical field of nylon fabric. The application comprises a nylon inner core formed by nylon fiber weaving; a waterproof layer sewn on both sides of the nylon inner core, wherein the waterproof layer is composed of PVC coated fabric; and an ultraviolet-resistant layer coated on the surface of the waterproof layer, wherein the ultraviolet-resistant layer is dark paint. The waterproof layer made of PVC coated fabric is sewn on the outer side of the nylon inner core. In use, the waterproof effect of the nylon inner core itself is improved, and the outer side of the waterproof layer is coated with dark paint. When the fabric is the same, the deeper the color, the better the protection effect against ultraviolet rays. Without additional increase in the weight of the fabric, the ultraviolet-resistant performance of the nylon fabric after forming is improved, the practicality of the fabric after being made into a coat is improved, the nylon fabric has the properties of waterproofness and ultraviolet resistance under the action of the paint, the quality of the nylon fabric is improved, and the service life is prolonged.