76results about How to "Increase intermolecular forces" patented technology

The invention relates to an anti-yellowing automobile composite film and a preparation method thereof, and belongs to the technical field of high polymer materials. The yellow-resistant automobile composite film is prepared from the following components in parts by weight: 60 to 70 parts of PVC (Polyvinyl Chloride) master batch, 10 to 20 parts of TPU (Thermoplastic Polyurethane) master batch, 1 to 2 parts of plasticizer, 0.5 to 0.8 part of flatting agent, 0.1 to 2 parts of yellowing-resistant modifier and 0.1 to 2 parts of modified flame retardant, sym-triazine cyanuric chloride and a benzotriazole intermediate in the anti-yellowing modifier absorb ultraviolet rays and reduce yellowing of the ultraviolet rays on the composite material, and maleimide groups, maleic anhydride and isocyanurate rings for increasing the crosslinking density cooperate with one another, so that the heat resistance of the material is improved, and the yellowing is reduced; phosphorus and nitrogen main chains of phosphonitrilic chloride trimer in the modified flame retardant have a conjugation effect, so that a protective film is formed, oxygen is isolated, and the phosphonitrilic chloride trimer and nitrogen are synergistically flame-retardant; the anti-yellowing automobile composite film prepared by the invention not only has excellent ultraviolet absorption performance, heat resistance and anti-yellowing effects, but also has a good flame retardant effect.

The invention relates to a flame-retardant rubber and plastic thermal insulation material and a preparation method thereof, and belongs to the technical field of high polymer materials. The flame-retardant rubber-plastic thermal insulation material comprises the following components in parts by weight: 50-75 parts of nitrile rubber, 20-45 parts of PVC resin, 10-15 parts of a plasticizer, 1-10 parts of a foaming agent, 1-5 parts of a foaming promoter, 10-40 parts of a composite flame retardant and 2-6 parts of a modified anti-aging agent, cyclohexanehexol phosphate in the composite flame retardant is heated and dehydrated into phosphoric acid, a barrier layer is formed to inhibit release of combustible materials, and dimethylallylamine combusts to absorb heat and cooperates with phosphorus-oxygen double bonds for flame retardance; a pre-product in the modified anti-aging agent reacts with a free radical of a rubber molecular chain, so that the heat resistance and the aging resistance of the material are improved, a maleimide group enhances an intermolecular acting force, the rigidity and the heat resistance of the molecular chain are improved, and material aging caused by high temperature is reduced; the flame-retardant rubber and plastic thermal insulation material prepared by the invention not only has an excellent anti-aging effect, but also has good flame retardance.

The invention discloses a composite film material with lasting fragrance, a preparation method and application of the composite film material in sticky notes, and belongs to the technical field of composite film materials. The composite film material is composed of a PET layer, a bonding layer and a CPP layer; the PET layer comprises PET resin, composite filler, a coupling agent, an antioxidant, an ultraviolet light absorber, a heat stabilizer and a light stabilizer; the bonding layer is composed of a solvent type polyurethane adhesive; the CPP layer comprises PP resin, a modified filler, microcapsule essential oil, a coupling agent, an antioxidant, an ultraviolet light absorber, a heat stabilizer and a light stabilizer; the composite film material prepared by the invention not only has lasting fragrance, but also has strong binding force with a writable coating, high strength, good dimensional stability and high transparency.

The invention provides a springback-reducing admixture for sprayed concrete and a preparation method of the springback-reducing admixture, and relates to the technical field of concrete admixtures. The springback-reducing admixture for the sprayed concrete comprises the following raw materials in percentage by mass: 40-70% of a component A and 30-60% of a component B, the component A comprises the following raw materials in percentage by mass: 30%-50% of calcined kaolin, 10%-20% of light calcined magnesia and 40%-60% of semi-hydrated gypsum. And the component B comprises the following raw materials in percentage by mass: 60-90% of cement, 5-10% of modified rubber powder and 5-10% of cellulose. The springback-reducing admixture for sprayed concrete provided by the invention is applied to sprayed concrete and has relatively low springback rate and relatively high strength.

The invention relates to the technical field of chemical fibers, and discloses a low-thermal-conductivity anti-ultraviolet fiber, a preparation method and application of the low-thermal-conductivity anti-ultraviolet fiber to a light-shading and heat-shielding fabric. The preparation method of the low-thermal-conductivity anti-ultraviolet fiber comprises the following steps: carrying out surface modification and functionalization treatment on a porous zinc oxide nanosheet to obtain a functionalized zinc oxide nanosheet; performing in-situ growth of cobalt borate on the surface of the functionalized zinc oxide nanosheet to obtain a composite nanomaterial; polyacrylonitrile, N, N-dimethylformamide and the composite nanomaterial are mixed, and a skin layer spinning solution is obtained; mixing the modified cellulose-based aerogel powder and N, N-dimethylformamide to obtain a core layer spinning solution; spinning the skin layer spinning solution and the core layer spinning solution to obtain polyacrylonitrile / aerogel composite fibers; the polyacrylonitrile / aerogel composite fiber is modified by diethylenetriamine, and an intermediate product is grafted to obtain the low-thermal-conductivity anti-ultraviolet fiber. The low-thermal-conductivity anti-ultraviolet fiber disclosed by the invention is low in thermal conductivity, good in anti-ultraviolet and flame-retardant effects and excellent in mechanical property.

The invention belongs to the technical field of textile fabrics, and particularly relates to an ultraviolet-proof antibacterial fabric and a preparation method thereof. The ultraviolet-proof antibacterial fabric comprises a base cloth layer and a modified polyester fabric layer, the modified polyester fabric is obtained by dipping a polyester fabric in a finishing liquid; the finishing liquid comprises a first finishing liquid and a second finishing liquid; the first finishing liquid is prepared from the following raw materials: a carboxymethyl chitosan derivative and polycarboxylic acid; the second finishing liquid is prepared by mixing nano titanium dioxide and absolute ethyl alcohol. According to the invention, the pre-treated polyester fabric is subjected to secondary surface modification by using the finishing liquid, and the durability of the fabric product is remarkably improved by using a covalent grafting mode.

The invention relates to the technical field of epoxy resin, and discloses a polyarylamide modified boron nitride-epoxy resin composite material, hydroxylated nano boron nitride reacts with a diazo group of 4-diazo diphenylamine sulfate to obtain aminated nano boron nitride, the aminated nano boron nitride and a 3, 5-diaminobenzoic acid monomer are subjected to a polymerization reaction to obtain polyarylamide modified boron nitride, and the polyarylamide modified boron nitride-epoxy resin composite material is prepared through the following steps: reacting hydroxylated nano boron nitride with a diazo group of 4-diazo diphenylamine sulfate; the polyarylamide modified boron nitride has good compatibility with epoxy resin, amino-terminated groups can be subjected to ring-opening reaction with epoxy groups of the epoxy resin, nano boron nitride is organically combined with the epoxy resin under the bridging action of polyarylamide, covalent bonds formed between a large number of amino groups on the surface and the epoxy resin in the curing process, and the epoxy resin can be cured to form the epoxy resin. The interface thermal resistance of the filler and the epoxy resin is reduced, the superhigh resistivity of the nano boron nitride, the reduction of agglomeration and the modification of the filler enable the polyarylamide modified boron nitride-epoxy resin composite material to show excellent thermal conductivity.

The invention discloses a reinforced and toughened composite polyethylene material for plastic pipe processing and a preparation method thereof, and belongs to the technical field of polyethylene material processing. The low-density polyethylene composite material comprises the following components in parts by weight: 90-100 parts of low-density polyethylene, 8-12 parts of glycidyl methacrylate, 5-6 parts of a flame retardant, 15-22 parts of a composite filler, 20-30 parts of a reinforced elastomer, 0.5-0.8 part of an initiator and 3-5 parts of an auxiliary additive, a low-density polyethylene matrix is reinforced by a strong elastomer, a composite filler, a flame retardant and glycidyl methacrylate, so that the tensile property and impact toughness of the composite polyethylene material are effectively improved, and the flame retardance and aging resistance of the material are also improved.

The invention discloses thermal-aging-resistant polyurethane resin as well as a preparation method and application thereof. The thermal aging resistant polyurethane resin is prepared from the following components in parts by mass: 15 to 45 parts of polyether polyol with a number-average molecular weight of 1000 to 2000, 40 to 70 parts of polyether polyol with a number-average molecular weight of 3000 to 4000, 5 to 15 parts of polycarbonate polyol, 5 to 8 parts of a chain extender, 340 to 430 parts of a solvent, 30 to 50 parts of isocyanate, 0.1 to 0.5 part of an antioxidant, 0.1 to 0.5 part of a catalyst and 0.1 to 0.5 part of a terminating agent. The thermal-aging-resistant polyurethane resin has a high softening point, and can solve the problem that the peel strength of the existing wet-process polyurethane resin finished leather is close to the lower limit after a high-temperature grain-absorbing embossing process.

The invention relates to the technical field of organic electroluminescent materials, and provides a compound, an organic electroluminescent device containing the same and an electronic device. The structure of the compound comprises a mother nucleus structure of phenanthro [2, 1-b] benzofuran, and the mother nucleus is connected with substituted triazinyl through a specific position to serve as an electron transport type main body material. When the compound is used as an electron transport type material in a mixed type main body material, the carrier balance in a light-emitting layer can be improved, the carrier recombination area can be widened, the exciton generation and utilization efficiency can be improved, the light-emitting efficiency of a device can be improved, and the service life of the device can be prolonged.

The invention relates to the technical field of polyurethane coatings, and discloses a quaternized bis-imidazolyl carbon nanotube modified polyurethane coating, compared with a pure-phase polyurethane coating, the quaternized bis-imidazolyl carbon nanotube modified polyurethane coating has better antistatic performance and mechanical performance, and by adding carbon nanotubes into the coating, the antistatic performance of the coating is improved, and the antistatic performance of the coating is improved. By utilizing the good conductivity of the carbon nanotubes and constructing an organic-inorganic network structure in the coating, not only is the antistatic ability of the coating improved, but also the mechanical property of the coating is improved, in addition, the conductivity of the surface of the coating can be improved by using the cationic imidazole quaternary ammonium salt, and the quaternary ammonium salt is grafted on the surface of the carbon nanotubes, so that the conductivity of the coating is improved. The anti-static agent has a synergistic effect, further improves the conductivity of the two, reduces the resistance of the coating, improves the anti-static effect of the coating, and improves the stability of the coating.

The invention relates to the technical field of PVC materials, in particular to an antibacterial medical PVC material and a preparation method thereof. The antibacterial medical PVC material is prepared from the following raw materials in parts by weight: 70 to 100 parts by weight of PVC resin, 10 to 30 parts by weight of plasticizer, 8 to 16 parts by weight of filler, 2 to 4 parts by weight of stabilizer, 1 to 3 parts by weight of coupling agent, 0.5 to 2 parts by weight of lubricant, 1 to 3 parts by weight of epoxy linseed oil, 0.2 to 0.8 part by weight of antioxidant 1010 and 5 to 12 parts by weight of antibacterial composite additive. The adopted antibacterial composite additive is formed by compounding an antibacterial agent and modified graphene, the prepared medical PVC material has good antibacterial performance and mechanical performance, meanwhile, the technological operation is simple, the production cost is low, meanwhile, the medical PVC material has good processing performance, the application prospect is wide, and the medical PVC material is suitable for popularization and application. The method is widely applied to the field of medical application.

The invention discloses a pharmaceutical composition containing betaine phosphate, a preparation method of the pharmaceutical composition and application of the pharmaceutical composition in preparation of drugs for treating methylmalonic acidmia combined with homocysteinemia, and belongs to the technical field of betaine, the preparation method comprises the following steps: preparing betaine phosphate, and compounding; the compounding comprises the following steps: preparing hydroxyl calcium carbonate, performing primary compounding, performing secondary compounding and coating; according to the pharmaceutical composition containing the phosphate betaine, the treatment effect on methylmalonic acidmia combined with homocysteinemia can be guaranteed, meanwhile, the purity and yield of the phosphate betaine can be improved through the preparation method of the pharmaceutical composition containing the phosphate betaine, agglomeration of crystals of the phosphate betaine is avoided, and the purity of the phosphate betaine is improved. And the prepared pharmaceutical composition containing betaine phosphate has the advantages of weak moisture absorption, strong fluidity and good high temperature resistance.

The invention relates to the technical field of adhesives, and discloses an environment-friendly water-based adhesive and a preparation method thereof. The water-based adhesive prepared by the preparation method disclosed by the invention is prepared from the following raw materials in parts by weight: 20 to 30 parts of polyethylene glycol adipate glycol, 3 to 8 parts of modified polyacrylic acid, 13 to 18 parts of isophorone diisocyanate, 3 to 6 parts of a modified chain extender, 0.005 to 0.02 part of a catalyst, 0.2 to 0.5 part of propylene glycol, 0.1 to 0.3 part of triethylamine, 3 to 6 parts of acetone and 50 to 70 parts of deionized water. The waterborne polyurethane adhesive is synthesized by adding auxiliaries such as modified polyacrylic acid and a modified chain extender, so that the adhesion, heat resistance, water resistance and the like of the adhesive are improved, and meanwhile, the waterborne polyurethane adhesive has certain environmental protection performance.

The invention relates to a maintenance type sanitary towel and a preparation method thereof, and belongs to the technical field of sanitary towels. The microcapsule attached to the surface layer of the sanitary towel provided by the invention is prepared from composite chitosan and sodium carboxymethyl starch. Microcapsules attached to the surface of the sanitary napkin are prepared from pullulan in cooperation with composite chitosan and sodium carboxymethyl starch, and a good antibacterial effect and a proper release speed are kept under the condition that human body menstrual blood is acidic. The microcapsules are prepared into microcapsule-containing composite membrane liquid, the composite membrane liquid is sprayed on a non-woven fabric, and the non-woven fabric is used as a surface layer to prepare the maintenance type sanitary towel. The shea nut essential oil and the chitosan are used as raw materials to prepare the composite membrane liquid, so that gaps in the finally formed composite membrane are enlarged, holes are increased, the compactness of the chitosan composite membrane is reduced, and the chitosan composite membrane has good air permeability. In addition, due to the addition of the shea butter essential oil, the intermolecular acting force between the shea butter essential oil and the membrane is enhanced, and the water absorption rate of the finally formed composite membrane is improved.

The invention relates to the technical field of organic electroluminescent materials, and provides an arylamine compound, an organic electroluminescent device containing the arylamine compound and an electronic device. The arylamine compound comprises a mother nucleus structure of phenanthro [2, 1-b] benzofuran, and when the compound is used as a hole transport type material in a mixed type main body material, the carrier balance in a light-emitting layer can be improved, the carrier recombination area can be widened, the exciton generation and utilization efficiency can be improved, the light-emitting efficiency of a device can be improved, and the service life of the device can be prolonged.

The application belongs to the technical field of organic electroluminescence, and relates to an organic compound, an organic electroluminescent device using the same and an electronic device. The organic compound has a structure as shown in formula 1. When the organic compound is used in an organic electroluminescent device, the performance of the organic electroluminescent device can be significantly improved.

The invention discloses a peculiar smell removing textile fabric and a production process thereof, and belongs to the technical field of textile fabric preparation, and the production process comprises the following steps: step S1, placing a textile fabric washed with acetone and dried in a sodium hydroxide solution with the concentration of 2 wt%, dipping at 90-95 DEG C for 0.5-1 h, washing with deionized water, and drying to obtain a pretreated fabric; s2, adding the pretreated fabric into the modified finishing liquid, standing for 1 min, taking out, drying at 100-110 DEG C, baking at 160-170 DEG C for 4-5 min, and cooling to obtain the odor-removing textile fabric. The hydroxyl activity of the surface of the textile fabric is effectively improved through alkali treatment, the intermolecular force between the modified deodorant and the textile fabric is enhanced, and meanwhile, the modified deodorant can improve the peculiar smell elimination performance of the textile fabric and can also improve the antibacterial performance of the textile fabric.

The invention discloses a hub powder coating capable of resisting powder collapse during finish turning as well as a preparation method and application of the hub powder coating. The hub powder coating is prepared from the following raw materials: modified polyester resin, epoxy resin, filler, a crosslinking accelerator, a flexibilizer and an adhesion promoter. According to the powder coating disclosed by the invention, modified polyester resin and epoxy resin are mainly adopted to react, a carboxyl-terminated group in the polyester resin and an epoxy group in the epoxy resin are subjected to a cross-linking curing reaction to prepare a coating, and meanwhile, a flexible small molecular chain segment is successfully grafted on a polyester branch chain, so that the glass transition temperature of the resin and the subsequently prepared powder coating is reduced; the toughness and the secondary recoating adhesive force of the coating are effectively improved. The powder coating can be used for automobile hubs, an obtained coating has good toughness, leveling property and corrosion resistance, the problem of powder collapse during finish turning can be avoided, meanwhile, a large curing window is achieved, and the requirements of customers for different furnace temperatures can be met within a certain temperature range.

The invention relates to the technical field of macromolecular polyurethane foaming materials, and mainly relates to a preparation method of environment-friendly combined polyether for a polyurethane foaming material, the environment-friendly combined polyether comprises the following components in parts by weight: 10-18 parts of starch-based low polyether and the balance of polyether polyol, and the total weight is 100 parts. The preparation method of the environment-friendly combined polyether comprises the following steps: drying treatment, pretreatment, catalyst addition, initiator polyol addition, esterification reaction, grafting reaction, viscosity adjustment and mixing. The starch-based low-polyether is prepared by taking common and cheap corn starch as a main component, and the starch-based low-polyether is mixed with polyether polyol to form the environment-friendly combined polyether for the polyurethane foaming material, so that the aims of taking the starch-derived polyether as a raw material and improving the environment friendliness of the polyurethane foaming material are fulfilled, and the production cost is low.

The invention relates to the technical field of PETG polyester materials, and particularly discloses an impact-resistant modified PETG polyester material and a preparation method thereof, and the impact-resistant modified PETG polyester material comprises the following components: 50-80 parts of PETG resin, 10-30 parts of an impact-resistant modifier, 5-15 parts of a wear-resistant reinforcing agent, 1-5 parts of a stabilizer, 1-3 parts of a lubricant, 2-8 parts of a corrosion-resistant additive, and 1-3 parts of an antioxidant. The impact modifier is formed by compounding a methyl methacrylate-butadiene-styrene copolymer, an acrylonitrile-butadiene-styrene copolymer and an ethylene-octene copolymer according to a compounding ratio of 1: 1: 3, and the wear-resistant enhancer is formed by compounding ultra-high molecular weight polyethylene micro powder, nano ceramic particles and polytetrafluoroethylene micro powder. The compounding ratio range is 1: 1: 2. According to the impact-resistant modified PETG polyester material and the preparation method thereof, the impact-resistant modified PETG polyester material has relatively good impact resistance, wear resistance, corrosion resistance and oxidation resistance.

The present invention relates to a polyurethane anti-fatigue mat material, a preparation method and an application thereof, and mainly solves the problem that the tensile strength and tear strength of the polyurethane anti-fatigue mat in the prior art cannot be excellent at the same time. The present invention adopts a new polyurethane anti-fatigue mat material and a preparation method thereof, comprising: in parts by weight, the following components: polyether polyol A: 60-90 parts, polymer polyol B: 8-40 parts, polyester ether polyol C: 5-30 parts, isocyanate 35-60 parts, water: 0.6-2 parts, foaming agent: 7-20 parts, reaction catalyst: 0.5-1 parts, foam stabilizer: 0.2-1 parts, chain extender: 2-5 parts, cell opener: 1-5 parts, color paste: 0-2 parts, release agent: 0.1-0.3 parts, polyurethane in-mold paint: 0.1-0.3 parts; and the technical scheme of the preparation method thereof, which solves the problem well, and can be used in a variety of indoor places such as hotels, office buildings or kitchens.

The invention relates to the technical field of engineering plastics, and particularly discloses high-performance wear-resistant low-precipitation polycarbonate and a preparation method thereof. The high-performance wear-resistant low-precipitation polycarbonate is prepared from the following raw materials in parts by mass: 80 to 84 parts of polycarbonate, 10 to 20 parts of modified ABS (Acrylonitrile Butadiene Styrene) copolymer, 1 to 5 parts of compatilizer and 0.1 to 0.5 part of antioxidant, the modified ABS copolymer is ABS copolymer grafted hyperbranched polyester ether, and double bonds are introduced into the hyperbranched polyester ether. The high-performance wear-resistant low-precipitation polycarbonate disclosed by the invention has the advantage that the defect that the wear resistance of the polycarbonate is still insufficient can be overcome.

The present application belongs to a method for preparing a furan resin. When using cardanol as a raw material of furan resin, conventional cardanol is used, which will cause the technical problem that the strength of the synthesized furan resin decreases after curing. A kind of cardanol modified furan resin for casting, cardanol derivatives and preparation methods thereof are provided. Cardanol is modified using thioglycolic acid, and a click chemistry reaction of a thiol-double bond occurs to obtain a cardanol derivative, and then a phenolic mixture and an aldehyde compound are reacted to obtain a cardanol modified furan resin, by partially modifying the unsaturated double bond of cardanol, a polar hydrophilic motif is introduced, and intermolecular forces are increased, thereby improving the strength of the furan resin. At the same time, the stratification phenomenon during storage and use is suppressed, and storage stability is improved. Then, a cardanol modified furan resin with more excellent performance is obtained, which has a good application prospect.

The invention discloses a preparation method of a fully bio-enzyme-degradable particle, and relates to the technical field of biodegradable materials. The invention uses 5,6-epoxyhexyltriethoxysilane to modify modified calcium carbonate and a trace amount of ferrosoferric oxide, and then disperses them in a cellulose hydrogel precursor solution. When cellulose self-associates into a three-dimensional network structure, the particles are firmly fixed in its micro-nano pore structure, thereby enhancing the stability of the degradation particle matrix, using starch as a water absorbent, epoxy soybean oil as a plasticizer, and modified rigid particle composite cellulose as a reinforcement, and blending with polylactic acid as a carrier, and then, by hot pressing and curing to obtain degradation particles, the inorganic nanoparticles are more firmly combined with the matrix under the dual influence of temperature and pressure, thereby enhancing the mechanical properties of the film.

The invention relates to the technical field of mosquito-repelling, soothing and after-sun repairing compositions, in particular to a composition with mosquito-repelling, soothing and after-sun repairing effects, which comprises the following components in parts by weight: 75.0-90.0 parts of water; 3.0 to 7.0 parts of methyl propylene glycol; 3.0 to 7.0 parts of bitter oil tree seed oil; 2.0 to 6.0 parts of menthol; 0.3 to 0.7 part of sorbitan olivate; 0.3 to 0.7 part of cetearyl glucoside; 0.3 to 0.7 part of 1, 2-hexanediol; 0.3 to 0.7 part of citronella sub-oil; 0.2 to 0.6 part of phenoxyethanol; 0.03 to 0.07 part of a capparis spinosa fruit extract; 0.02 to 0.05 part of an opuntia ficus-indica stem extract; fatty acid in the bitter oil tree seed oil not only has an excellent mosquito repelling effect, but also can strengthen a skin barrier function.

The invention discloses a preparation method of a porous polyamide fiber with multiple resistance effects, which comprises the following steps: step 1, putting polyamide chips into a stock bin, inputting into a screw extruder for high-temperature melting, metering and distributing to a spinning manifold through a metering pump, spraying out through a spinneret plate in the spinning manifold to form melt trickles, cooling through side blowing, bundling and oiling, and obtaining the porous polyamide fiber with multiple resistance effects; obtaining nascent fibers; 2, after the nascent fiber is subjected to pre-interlacing, the nascent fiber is subjected to low-temperature high drafting and main interlacing through a GR1 roller and a GR2 roller, and then winding forming is conducted; the draft ratio between the roller GR1 and the roller GR2 is controlled to be 1.4-1.7, and the temperature of the roller GR2 is controlled to be 120-140 DEG C. The prepared yarn is soft, glutinous and fine in hand feeling, wear-resistant and not prone to deformation, the formed fabric is soft, glutinous and fine in hand feeling, free of deformation, free of pilling and snagging and good in wear resistance, the feeling of breathability, coolness and mild touch of a polyamide fiber fabric is reserved, and the fabric is more cool to wear.

The invention discloses a continuous plastic dipping production process for C-shaped steel, and relates to the technical field of building materials. The C-shaped steel continuous plastic dipping production process comprises the steps that a core material is fed into heating equipment to be preheated; the preheated core material is fed into an inner tank of a boiling tank to be subjected to powder soaking, and then powder homogenizing is conducted through an outer tank of the boiling tank; the core material obtained after powder uniformizing is fed into a feeding area to be heated and fused, then cooling is conducted, a fully-wrapped plastic dipping layer is formed on the core material, and C-shaped steel is obtained; wherein the plastic dipping layer at least comprises modified polyethylene or modified polyvinyl chloride. According to the C-shaped steel continuous plastic dipping production process, continuous production is achieved, efficiency is improved, the plastic dipping labor intensity is reduced, port full protection and corrosion prevention are achieved, the corrosion prevention effect of the C-shaped steel surface is improved, and the problem that a port is prone to rusting is solved.

The embodiment of the invention provides an aerosol generating medium section, a preparation method thereof and an aerosol generating product. The preparation method of the aerosol generating medium section comprises the following steps: preparing slurry, wherein the slurry comprises a base material and fuming medium gel; carrying out tape casting on the slurry to form a sheet-shaped substrate; winding the sheet matrix to form a winding structure; the wound structure is cut to form aerosol-generating media segments. According to the aerosol generating medium section and the preparation method thereof, the aerosol generating product contains the fuming medium gel, and the fuming medium in the fuming medium gel is located in the meshes of the three-dimensional network structure, so that the intermolecular acting force of the fuming medium is improved, the hydrophilic capacity of the fuming medium is reduced, and the fuming effect is improved. And the possibility that the fuming medium is damped and mildewed during the storage period of the aerosol generating medium section can be reduced.

The invention belongs to the field of polyurethane materials, and particularly relates to a preparation method of a bio-based hydrophilic polyurethane water-swelling elastomer, which comprises the following steps: step 1, uniformly mixing isocyanate, bio-based polycaprolactone polyol, polylactic acid polyol, a catalyst, polyethylene glycol and water, and reacting at room temperature to obtain a reaction solution; and step 2, foaming and curing the reaction liquid to obtain the bio-based hydrophilic polyurethane water-swelling elastic material. The hydrophilic polyurethane expansion elastomer prepared by the preparation method disclosed by the invention has better hydrophilicity and stable water expansion performance, also has better mechanical properties and better application prospects; the bio-based hydrophilic polyurethane water-swellable elastomer prepared by the method disclosed by the invention is low in preparation cost, suitable for large-scale batch production and beneficial to application of the bio-based hydrophilic polyurethane water-swellable elastomer.