648results about How to "Improve scratch resistance" patented technology

The invention provides an anti-corrosion Teflon coating as well as a preparation method and application thereof, and belongs to the technical field of coatings. The preparation method comprises the following steps: irradiating polytetrafluoroethylene micro-powder, performing graft modification on the irradiated polytetrafluoroethylene micro-powder and glycidyl methacrylate, reacting with phosphorus oxychloride and polydopamine modified graphene, adding into a Teflon primer, and uniformly stirring and mixing to obtain the anti-corrosion Teflon coating. The anti-corrosion Teflon coating prepared by the invention has good high-temperature resistance, corrosion resistance, rust resistance, mechanical properties, wear resistance, scratch resistance, medium resistance and the like, can effectively resist high-wear-resistance environments such as sliding friction, impact friction and cavitation friction and high-corrosion environments such as acid media and alkaline media, and has a wide application prospect.

The invention discloses a multifunctional electronic product screen protective film and a preparation method thereof. The protective film comprises a modified base film and a multifunctional composite layer compounded on the surface of the modified base film, the multifunctional composite layer comprises an elastic buffer layer and a self-repairing layer which are sequentially arranged from inside to outside; wherein the elastic buffer layer is an elastic buffer layer with gradient density; the elastic buffer layer comprises the following components in parts by weight: 100 parts of a thermoplastic polyurethane elastomer, 15-25 parts of hollow glass microspheres, 10-15 parts of polyethylene glycol and 3-6 parts of an isocyanate cross-linking agent; the self-repairing layer comprises the following components in parts by weight: 100 parts of a dynamic reversible covalent bond polymer, 30-40 parts of phase change material microcapsules, 10-15 parts of nano cellulose, 5-8 parts of a near-infrared photosensitive initiator and 2-4 parts of an antioxidant. Compared with the prior art, the protective film provided by the invention has excellent scratch self-repairing performance, good adhesion and high anti-explosion screen performance.

The invention relates to the field of matt films, in particular to a scratch-resistant BOPP (biaxially-oriented polypropylene) matt film and a preparation method thereof. The scratch-resistant BOPP matt film comprises an upper surface matt layer, a middle core layer and a lower surface layer which are sequentially arranged, the upper surface matting layer comprises a matting master batch; the matting master batch comprises 28 to 50 weight percent of co-polypropylene, 8 to 14 weight percent of ethylene-octylene block copolymer, 6 to 10 weight percent of micro-crosslinked polypropylene and 30 to 50 weight percent of high-density polyethylene; the ethylene-octylene segmented copolymer comprises a hard segment with low octylene content and high crystallinity, and an amorphous soft segment with high octylene content; the middle core layer comprises homo-polypropylene; the lower surface layer comprises a smooth surface layer or an extinction layer. By utilizing the synergistic effect of the ethylene-octylene block copolymer and the micro-crosslinked polypropylene, the compressive deformation performance, the impact strength, the tensile strength and the yield strength of the co-polypropylene are improved, the indentation of a film surface in a scraping pressure applying stage and the scratches and damages generated in a sliding stage are reduced, the scratch resistance of the upper surface matting layer is improved, and the matting effect is ensured.

The invention discloses a super-wear-resistant super-hydrophobic coating in the technical field of coatings, the super-wear-resistant super-hydrophobic coating comprises a primer and a finishing coat, the primer comprises solvent-free aliphatic polyether polyol resin, micro-powder particles, di-tetratoluene diisocynate, fumed silica nanoparticles and a primer magnetic attraction material; the finishing paint comprises hydrophobic nanoparticles, a diluent, a finishing paint magnetic attraction material and a hydrophobic treatment agent, the primer magnetic attraction material is ferrite powder, and the finishing paint magnetic attraction material is nickel powder. The preparation method comprises the following steps: 1, preparing the primer; secondly, primer is sprayed; step 3, roughening the primer; 4, finish paint is manufactured; step 5, spraying finish paint; and step 6, detecting the performance of the coating. The preparation method is scientific and reasonable, the uniformity and stability of the coating in the preparation and coating process are ensured by optimizing the composition of the coating material, improving the preparation process and introducing a magnetic suction device, and therefore the wear resistance, hydrophobicity and adhesive force of the coating are improved.

The invention belongs to the technical field of agricultural film preparation, and particularly relates to a coating type polyolefin seven-layer co-extrusion light-conversion dustproof high-heat-preservation pesticide-resistant long-acting dripping fog dispersal greenhouse film and a preparation method thereof. The greenhouse film is composed of a first inner dustproof anti-aging layer, a second inner heat-preservation anti-aging dustproof storage layer, a third inner high-heat-preservation anti-aging layer, a middle light conversion layer, a third outer high-heat-preservation anti-aging layer, a second outer heat-preservation anti-aging layer, a first outer modified bonding anti-aging layer and a coating layer-long-acting dripping fog dispersal layer. The specification width of the greenhouse film is 10 m or above, the thickness is 0.12 mm-0. 22 mm, the light transmittance is 90% or above, the haze is 15% or below, the infrared transmittance is smaller than 18%, the annual attenuation rate of the light transmittance is smaller than 1.0% due to the dustproof function, the lasting period of the dripping fog dissipation function is 10 years or above, and the requirements of farmers for various performance indexes of the greenhouse film with the service life being 10 years or above can be completely met.

The invention relates to low-emissivity coated glass and a preparation method thereof. The low-emissivity coated glass comprises a glass substrate and a coating layer arranged on one side of the glass substrate, the coating layer comprises a base layer, a first seed layer, a first functional layer, a first barrier layer, a second functional layer, a second barrier layer, a second seed layer, a third functional layer, a third barrier layer and a top dielectric layer which are sequentially coated outwards from one side of the glass substrate. According to the invention, the barrier layer is controlled to adopt the metal simple substance with excellent compactness and stability and high melting point or the barrier layer is controlled to adopt the nitride, the silicon nitride, the silicon carbonitride or the silicon boron nitride and the like of the metal material, so that the function layer is protected from being oxidized, the radiation rate and the reflectivity are low, and the service life is long. And stability is achieved in the heat treatment process.

The invention relates to the technical field of composite boards, and discloses a scratch-resistant PE composite board and a preparation method thereof. The PE composite board is prepared by taking high-molecular-weight polyethylene, low-density polyethylene and medium-density polyethylene as main raw materials, adding functional aids such as a reinforcing filler, a modified polyurethane elastomer and molybdenum disulfide, and carrying out processes such as banburying, hot press molding and cold press molding. Due to the addition of the reinforcing filler, the mechanical property and the surface hardness of the matrix are improved, and the scratch resistance is further improved; the modified polyurethane elastomer is introduced into the matrix as a toughening component, so that not only is the toughness of the matrix improved, but also the scratch resistance of the matrix is improved; due to introduction of molybdenum disulfide, the unique layered structure of molybdenum disulfide can be utilized, the friction coefficient of the matrix is reduced, and then the scratch resistance of the matrix is improved.

The invention relates to the technical field of plastic materials, and discloses a plastic material for a Bluetooth headset shell and a preparation method of the plastic material. The plastic material for the Bluetooth headset shell is prepared from the following raw materials in parts by weight: 30 to 50 parts of polycarbonate, 25 to 45 parts of ABS (Acrylonitrile Butadiene Styrene) resin, 5 to 12 parts of a MoS2 / PDA / TiO2 composite material, 8 to 15 parts of a toughening agent, 0.1 to 0.5 part of a lubricating agent, 0.3 to 0.8 part of an antioxidant 1010 and 0.5 to 1 part of a macromolecular antistatic agent. The material is prepared by taking ABS (Acrylonitrile Butadiene Styrene) resin and polycarbonate as matrix resin, adding an auxiliary agent and carrying out melt blending, wherein due to the addition of the MoS2 / PDA / TiO2 composite material, the wear resistance and the scratch resistance of the matrix are improved; by adding the macromolecular antistatic agent, the antistatic performance of the matrix is improved, and the adsorption of dust on the surface of the material is reduced.

The invention provides a preparation method of an ETFE fluorofilm plate with excellent comprehensive performance, and belongs to the technical field of manufacturing of high-performance building materials. According to the preparation method, a metal plate plated with an aluminum-zinc alloy film layer serves as a substrate, and the upper surface and the lower surface of the substrate are each provided with a composite plating layer. The composite coating comprises a silicon dioxide-carbon tube coating, an indium tin oxide coating, a wear-resistant layer, an ETFE fluorine film layer and a wear-resistant hydrophobic layer. The ETFE fluorine diaphragm plate prepared by the method not only has excellent corrosion resistance and excellent heat insulation performance, but also has good scratch-resistant protection and weather resistance, and particularly, the coated wear-resistant hydrophobic layer effectively reduces the adhesion of moisture on the surface of the diaphragm plate, improves the self-cleaning performance of the diaphragm plate, reduces the maintenance cost, and is suitable for large-scale popularization and application. The introduction of the layer not only protects the surface of the film, but also enhances the stability of the film in the long-term use process. The ETFE fluorine film plate prepared by the method is suitable for various high-performance building requirements, and shows a wide application prospect.

The invention relates to the technical field of microcrystalline glass, and discloses microcrystalline frosted glass as well as a preparation method and application thereof. The frosted surface of the microcrystalline frosted glass is of a sharp bulge structure; the pointed bulge structure comprises a plurality of hexagonal pyramid particles; based on the total area of the frosted surface, the area of the hexagonal pyramid accounts for 90-97% of the total area of the frosted surface. The microcrystalline frosted glass provided by the invention has a visual frosted effect, can reflect bright light under light, is smooth in hand feeling, and has good fingerprint resistance, pollution resistance and scratch resistance.

The invention discloses UV glue for a holographic IMR diaphragm and the holographic diaphragm prepared from the UV glue. The UV glue is prepared from the following raw materials: vinyl silane, polyester acrylate, aliphatic polyurethane acrylate, trifunctional sulfydryl modified acrylate, a bifunctional active monomer, a trifunctional active monomer and a photoinitiator. The bifunctional active monomer comprises one or more of dipropylene glycol diacrylate, tripropylene glycol diacrylate and triethylene glycol diacrylate. And the trifunctional active monomer is trimethylolpropane triacrylate or pentaerythritol triacrylate. A silicon-oxygen bond in the added vinyl silane has hydrophilicity and can be subjected to a hydrolysis reaction with water molecules in air in a high-temperature and high-humidity environment to generate a Si-OH intermediate, and then the Si-OH intermediate and the silicon-oxygen bond are condensed to form a Si-O-Si bond, so that the compactness of a cross-linked network is further enhanced; and the light-cured coating has excellent water resistance and temperature resistance.

The invention provides a PC / PMMA / ABS composite material as well as a preparation method and application thereof. The PC / PMMA / ABS composite material is prepared from PC resin, PMMA resin, ABS resin, a compatilizer, a transesterification accelerant and other auxiliaries. The PC resin, the PMMA resin and the ABS resin are matched in a specific dosage range, and the compatibilizer and the ester exchange accelerant are added for synergistic compounding to improve the compatibility of the three resins, so that the obtained PC / PMMA / ABS composite material has excellent scratch resistance, impact resistance and higher tensile strength, and the appearance does not have the phenomenon of fantastic pearlescent lines; the method is suitable for preparing automotive interiors.

The invention provides a full-biodegradable film and a preparation method thereof. The film comprises the following raw materials: PLA, PBAT, calcium carbonate, an epoxy chain extender and zinc stearate. The preparation method of the film comprises the following steps: (1) modifying calcium carbonate with zinc stearate to obtain active calcium carbonate; (2) mixing activated calcium carbonate and PBAT, melting and granulating to obtain a one-step modified material; (3) carrying out melt blending on an epoxy chain extender and PLA to obtain a second-step modified material; (4) carrying out melt blending on the first-step modified material and the second-step modified material to obtain a PLA / PBAT / calcium carbonate composite material; and (5) adopting the PLA / PBAT / calcium carbonate composite material, and continuously blowing the PLA / PBAT / calcium carbonate composite material into a film through a single-screw extruder to obtain the full-biodegradable film. The thin film meets the use requirements of GB / T38082-2019, GB / T21661-2020 and GBT 35795-2017, and the production cost is low.

The invention discloses a coating liquid and a photovoltaic front panel. The coating liquid comprises a component A and a component B, the component A comprises the following raw materials in parts by weight: 15-35 parts of fluorocarbon resin; 20 to 40 parts of acrylic resin; 1 to 10 parts of matting resin; 1 to 5 parts of an ultraviolet absorbent; the component B comprises a curing agent, and the curing agent comprises-NCO groups. Therefore, when the coating liquid disclosed by the invention is coated on the photovoltaic front panel, powdering of the photovoltaic front panel caused by long-term ultraviolet irradiation can be effectively resisted, and meanwhile, the coating also has excellent scratch resistance, light transmission and water vapor barrier rate.

The invention discloses a 6H scratch-resistant acrylic plate as well as a preparation method and application thereof, and belongs to the technical field of high polymer materials. The acrylic plate comprises a first hardening coating, a PMMA (polymethyl methacrylate) layer and a second hardening coating from top to bottom. The scratch-resistant acrylic plate provided by the invention adopts an innovative hard liquid composition, and comprises polyurethane acrylic resin, an active monomer, metal oxide nanoparticles, a photoinitiator and an auxiliary agent. Compared with an existing scratch-resistant coating material, the scratch-resistant coating material has the advantages that the polyurethane acrylic resin is used as a main film forming substance and is combined with the active monomer and the photoinitiator, so that a high-hardness coating can be quickly formed under a photocuring condition, the formula of the coating is simplified, and the wear resistance, the toughness and the optical performance of the coating are effectively improved; the composition avoids dependence on traditional hardeners and solvents, reduces emission of volatile organic compounds, and is more environment-friendly.

This invention discloses a PETG co-extruded composite sheet and its preparation method. The method involves adding extruder and APET masterbatch to an extruder, then layering and combining the extruder melt and APET masterbatch melt to form a composite melt with an upper and lower layer of extruder and a middle layer of APET masterbatch. This is then shaped by roller pressing to obtain the PETG co-extruded composite sheet. During the blending process of modified polyester and modified filler, the epoxy group structure in the modified polyester molecule can react with the secondary amine in the modified filler, resulting in mild cross-linking and increasing the strength of the polyester material. The modified polyester molecular chain contains polysiloxane segments, and also has polysiloxane segments branched onto its side links. When impacted, the flexible polysiloxane segments absorb and dissipate a large amount of energy through violent movement, rotation, and entanglement. Furthermore, the nano-reinforcing points formed by the cage-like silsesquioxane structure within the molecule contribute to the excellent scratch resistance of the prepared composite sheet.

The invention discloses an aluminum gusset plate capable of purifying air. The aluminum gusset plate comprises an aluminum gusset plate base body, the aluminum gusset plate base body is immersed into a sufficient amount of modified coating agent to be fully treated, and after immersion is finished, the aluminum gusset plate base body is taken out and dried to form a modified coating layer. According to the aluminum gusset plate capable of purifying air, an aluminum gusset plate base body is matched with a modified coating agent for immersion treatment, bisphenol A epoxy resin in the modified coating agent serves as a base body raw material, a flame retardant, a curing agent, a silane coupling agent KH560 and carboxymethyl cellulose are added to serve as functional auxiliaries, and a zeolite additive and a conditioning agent are added to serve as coordinating and coordinating raw materials, so that the aluminum gusset plate capable of purifying air is obtained. The two components are synergic together, the air purification and flame retardance of the product are harmoniously improved, and the product has remarkable scratch resistance and acid corrosion stability.

The invention relates to a method for improving hardness of a cover plate, which comprises the following steps: pretreating the surface of the cover plate to remove oil stain and dust on the surface; a titanium nitride layer is sprayed on the surface of the cover plate, and after the titanium nitride layer is sprayed, residual stress in the titanium nitride layer is eliminated through an annealing process; carrying out curing treatment on the cover plate; wherein the technological parameters for spraying the titanium nitride on the surface of the cover plate comprise that the powder feeding amount is set to be 30-40 g / min, the electric power is set to be 20-40 KW, the argon gas flow is set to be 4-5 L / min, the hydrogen gas flow is set to be 1-2 L / min, the spray gun voltage is set to be 50-55 V, and the spray gun current is set to be 200-300 A. Spraying is conducted on the surface through plasma spraying equipment or electric arc spraying equipment, the spraying process is controlled, and the hardness of the cover plate can be improved. After spraying, heating curing or ultraviolet curing is carried out, and it is ensured that the coating can be firmly attached to the surface of the cover plate after curing. Substances such as titanium nitride are sprayed on the surface of the cover plate, so that the hardness of the cover plate is effectively enhanced.

The invention relates to a scratch-resistant modified lens resin material and a preparation process thereof. The lens resin material comprises the following components in percentage by mass: 85-95% of CR-39 resin, 1-3% of nano silicon dioxide, 3-7% of a polyurethane cross-linking agent, 0.1-1% of a surfactant and a proper amount of a solvent for preparing nano particle dispersion liquid. Through proportioning and combination of the components, the resin material has excellent scratch resistance and keeps good optical and mechanical properties at the same time. The preparation process comprises the following steps: preparing a nanoparticle dispersion liquid, modifying the CR-39 resin, carrying out injection molding and preliminary curing, taking out and carrying out final curing, polishing the surface of the lens, coating a scratch-resistant coating and carrying out curing. Through the process steps, a firm scratch-resistant coating is formed on the surface of the lens, and the scratch resistance of the lens is further improved.

The invention belongs to the technical field of water-based organic resin, and particularly relates to a preparation method of resin for an environment-friendly water-based electrosilvering coating. According to the environment-friendly water-based electrosilvering coating resin and the preparation method thereof, the acrylic acid monomer and the carboxylic acid monomer containing various functional groups are added into the raw materials in the prior art, and the environment-friendly water-based electrosilvering coating resin prepared through co-modification of the epoxy resin, the silanized graphene oxide and the silane coupling agent is good in adhesive force with a substrate and has good salt fog resistance and scratch resistance; the organic solvent used in the preparation process does not contain triphenyl organic solvents and is low in toxicity and environmentally friendly, the raw materials of the resin are wide in source and relatively low in cost, and the prepared environment-friendly water-based electrosilvering coating resin has good fluidity, controllable viscosity and easy construction.

The invention discloses wood grain protective paint for furniture plates as well as a preparation method and application of the wood grain protective paint, and relates to the technical field of coatings. The invention provides wood grain protective paint for furniture plates. The wood grain protective paint is prepared from the following components in parts by weight: 100 parts of polyurethane, 3-8 parts of first wax powder, 0.5-2 parts of second wax powder, 0.1-0.2 part of polydimethylsiloxane, 0.2-0.4 part of an organic silicon defoaming agent, 1.5-1.8 parts of nano silicon dioxide and 6-6.5 parts of deionized water. The deionized water is poured into a container according to the formula amount, and then the polyurethane and the first wax powder are added for stirring; adding polydimethylsiloxane, an organic silicon defoaming agent and nano silicon dioxide, adding second wax powder, stirring, and uniformly mixing to obtain the wood grain protective paint for the furniture plate. The method is applied to the furniture field. The first wax powder with the micron particle size and the second wax powder with the nano particle size are compounded, so that the smoothness of the protective paint is improved, and the hardness, the wear resistance and the scratch resistance of the protective paint are improved by matching with the polydimethylsiloxane and the nano silicon dioxide.

The invention discloses a water-based scratch-resistant matt varnish for open coating. The water-based scratch-resistant matt varnish is prepared from main paint, a curing agent and water in a mass ratio of 100: (9-12): (10-5), (1) the main paint comprises the following components in percentage by weight: 5-30% of water-based hydroxyl acrylic emulsion and 20-60% of water-based matting emulsion; 1%-5% of matting powder; the anti-scratch coating is prepared from the following components in percentage by weight: 0.3%-0.4% of a defoaming agent, 0.5%-1.5% of a wetting agent, 4.0%-5.0% of a film-forming solvent, 25%-45% of deionized water, 0.5%-1.0% of a rheological additive and 0.5%-2.0% of an anti-scratch additive. And (2) the curing agent comprises the following components in percentage by weight: 60.0%-100% of HDI (hexamethylene diisocyanate) water dispersible isocyanate and 0%-40.0% of propylene glycol methyl ether acetate. The product provided by the invention has the advantages of no light, no bright mark, good opening effect, no phenomena of bloated conduit, accumulation and non-uniform gloss, and is especially suitable for spraying construction of an automatic spraying line.

The invention relates to the technical field of liquid silicone rubber hand feeling treating agents, in particular to a liquid silicone rubber hand feeling treating agent and a preparation method and application thereof. The liquid silicone rubber hand feeling treating agent is prepared from the following raw materials in parts by mass: 80 to 100 parts of vinyl silicone oil, 10 to 20 parts of polydimethyl silicone oil, 10 to 20 parts of reinforcing filler, 5 to 15 parts of modified hydrogen-containing silicone oil A, 2 to 6 parts of modified hydrogen-containing silicone oil B, 0.1 to 0.5 part of platinum catalyst and 0.01 to 0.1 part of inhibitor. The liquid silicone rubber hand feeling treating agent provided by the invention has good hand feeling, wear resistance, scratch resistance and stain resistance, can prevent silica gel leather from mildewing in a humid and hot environment, and has good adhesive force with the silica gel leather.

The invention relates to the technical field of SBA materials, in particular to an SBA high-elastic composite material and a preparation method and application thereof.The SBA high-elastic composite material is prepared from, by weight, 45-50 parts of EVA, 30-35 parts of POE, 15-20 parts of SEBS, 8-12 parts of functional auxiliaries, 6-9 parts of modified filler, 3-5 parts of nano-zinc oxide, 2-3 parts of antioxidant, 1-3 parts of foaming agent, 2-3 parts of calcium stearate and 1-2 parts of cross-linking agent. According to the SBA high-elastic composite material, EVA, POE and SEBS are adopted as matrixes, nano-zinc oxide, the antioxidant, the foaming agent, calcium stearate and the cross-linking agent are added as auxiliaries, and meanwhile, the modified filler and the functional auxiliaries are blended, so that the tearing property, hardness and elastic property of the product are improved in a coordinated manner, and the scratch resistance, abrasion resistance and flex stability of the product are remarkable.

The invention provides an anti-fingerprint functional coating, an ultralow-gloss skin-touch anti-fingerprint film and a preparation method and application thereof, and belongs to the technical field of anti-fingerprint materials. The anti-fingerprint functional coating provided by the invention is prepared from the following preparation raw materials in percentage by mass: 60-70wt% of UV (Ultraviolet) resin, wherein the UV resin is 3-functional-group urethane acrylate and 6-functional-group matte fluorocarbon acrylate resin; 5 to 10 wt% of a UV monomer; 6 to 10 wt% of thermosetting resin; the thermocuring resin is a single-component thermocuring organic silicon resin; 0 to 1.5 wt% of matting powder; 0.8 to 2 weight percent of a photoinitiator; and 10-17 wt% of an organic solvent. The ultralow-gloss skin-touch anti-fingerprint film prepared from the anti-fingerprint functional coating provided by the invention is good in fingerprint resistance and relatively low in cost.

The invention discloses scratch-resistant water-based easy-to-clean polyurethane synthetic leather as well as a preparation method and application thereof. The polyurethane synthetic leather is structurally composed of a water-based antifouling layer, a water-based surface layer, a water-based polyurethane bonding layer and a base material layer in sequence from top to bottom, the water-based antifouling layer is prepared from water-based antifouling layer slurry consisting of the following components in parts by weight: 50-100 parts of water-based polyurethane resin, 20-30 parts of hydrophilic hydroxyl silicone oil, 10-15 parts of a water-based isocyanate curing agent and 2-5 parts of color paste; the waterborne polyurethane resin is hydroxyl acrylic acid modified polyurethane resin, and the hydrophilic silicone oil is hydroxyl silicone oil. According to the invention, water-based antifouling treatment is adopted, so that the scratch-resistant water-based easy-to-clean polyurethane synthetic leather is prepared. The prepared product has good environment-friendly and durable characteristics, and can meet the application in the field of polyurethane synthetic leather for home furnishing and engineering decoration.

The invention discloses a toughened scratch-resistant polypropylene composite material which is prepared from the following components: polypropylene resin, maleic anhydride grafted polyethylene, modified nano silicon carbide, an organic silane coupling agent, an inorganic filler, an antioxidant, stearic acid, an elastomer and nano zinc oxide. Wherein the weight part ratio of the polypropylene resin to the maleic anhydride grafted polyethylene is 10: 1; wherein the particle size of the nano zinc oxide is 30-40 nm; the polypropylene composite material prepared by the invention not only has excellent mechanical properties, but also has excellent scratch resistance. The modified nano silicon carbide is introduced into the polypropylene composite material, due to the fact that the modified nano silicon carbide is small in particle size and large in specific surface area, physical and chemical defects of the surface are increased, the opportunity of physical or chemical bonding between nano particles and macromolecular chains is increased, the molecular chains are not prone to sliding and breaking, and therefore the rigidity of a matrix is enhanced. The improvement of the rigidity is helpful for resisting the generation of external scratches, so that the scratch resistance of the material is improved.

The invention belongs to the technical field of waterborne coatings for leather, and discloses a scratch-resistant waterborne coating and a preparation method and application thereof.The scratch-resistant waterborne coating is prepared from, by weight, 80-110 parts of waterborne polyurethane acrylate resin, 0.5-1 part of silicon dioxide, 6-10 parts of aluminum oxide, 0.1-1 part of silicon carbide micro powder, 0.1-0.3 part of a stabilizer, 0.3-0.6 part of a flatting agent and 0.3-0.6 part of a defoaming agent; wherein the particle size of the silicon dioxide is 20-40 nm; the aluminum oxide is divided into first aluminum oxide and second aluminum oxide, the weight ratio of the first aluminum oxide to the second aluminum oxide is (2-3): (7-8), the particle size of the first aluminum oxide is 70-80 nm, and the particle size of the second aluminum oxide is 10-15 nm; the particle size of the silicon carbide micro powder is 10-15 nm. According to the invention, on the basis that the second aluminum oxide with a smaller particle size is compounded with the first aluminum oxide, the silicon carbide micro powder with the same particle size as the second aluminum oxide is added and the silicon dioxide with a specific particle size is compounded, so that the effect of synergistically improving the scratch resistance of the water-based paint can be generated, and the scratch resistance of the water-based paint is remarkably improved.

The invention relates to the technical field of new materials of conveying belts, and discloses a full-polyester-reinforced scratch-resistant wear-resistant whole-core flame-retardant conveying belt for a coal mine and a preparation method of the whole-core flame-retardant conveying belt. Comprising the following steps: adding ethylene propylene rubber into an open mill for plastifying to obtain plasticated rubber; adding calcium carbonate, aluminum hydroxide and a vulcanizing agent into the plasticated rubber, uniformly stirring, and then mixing to obtain a rubber compound; immersing the modified polyester fabric into the mixed rubber, taking out the modified polyester fabric, taking out the redundant mixed rubber on the polyester fabric by using an extrusion roller, then drying, and then vulcanizing to obtain the product. The conveyor belt not only has good scratch and collision resistance and wear resistance, but also has good flame retardant property.

The invention belongs to the field of hydrophobic coatings, and particularly relates to a preparation method and application of a transparent super-hydrophobic coating, the preparation method comprises the following steps: blending a polyvinylidene fluoride-trifluoroethylene copolymer, PDMS and a solvent to obtain a spinning solution, and forming a super-hydrophobic transparent coating on the surface of a substrate by electrostatic spinning; the mass ratio of the polyvinylidene fluoride-trifluoroethylene copolymer to the PDMS is (1: 0)-(1: 10), and the concentration of the polyvinylidene fluoride-trifluoroethylene copolymer and the PDMS in the spinning solution is 5-30wt%. The accelerant layer and the cross-linking agent layer are formed on the substrate in advance, the cross-linking agent layer can increase the connection strength between the accelerant layer and the substrate, the cross-linking agent layer is cross-linked with the polyvinylidene fluoride-trifluoroethylene copolymer and PDMS in the electrostatic spinning solution, and the super-hydrophobic coating formed through electrostatic spinning is of a mutually cross-linked nanofiber structure, so that the super-hydrophobic coating has the advantages that the electrostatic spinning effect is good, and the service life of the super-hydrophobic coating is prolonged. The fibers are mutually crosslinked to form a net-shaped structure, and a large number of pores exist in the net-shaped structure, so that the super-hydrophobic coating with super-hydrophobicity and optical transparency is formed.