408 results about "Functional polymers" patented technology

The invention relates to the technical field of functional polymer composite materials, and provides diatomite modified composite super absorbent and rapid absorbent resin and a preparation method thereof. The preparation raw materials of the diatomite modified composite high-water-absorption and rapid-water-absorption resin provided by the invention comprise acrylic acid, acrylamide, sodium hydroxide, N, N '-methylene bisacrylamide, ammonium persulfate and modified diatomite. The diatomite is modified by the silane coupling agent, the agglomeration problem of the diatomite is solved, the compatibility with organic monomers is improved, and the modified diatomite, acrylic acid and acrylamide are utilized to construct an organic-inorganic synergistic three-dimensional porous network structure, so that the resin has ultrahigh water absorption rate, rapid water absorption performance and good water retention stability. Meanwhile, the preparation method disclosed by the invention does not need nitrogen protection, has the advantages of simple process, controllable raw material cost and easiness in industrial mass production, and is suitable for multiple fields such as water-saving agriculture, soil moisturizing, landscaping and the like.

The invention discloses a preparation method and application of a membrane separation material based on external field enhanced water isotope separation. The preparation method comprises the following steps: firstly, pre-enriching a precursor component containing a polymerizable monomer, a cross-linking agent and a photoinitiator in a confinement pore channel of a nano-porous carrier through an impregnation-encapsulation strategy; and then, through in-situ photo-initiation polymerization, a covalent cross-linked functional polymer network is constructed in the pore channel, and stable packaging of the polymer is realized. In the water isotope separation period, external field conditions are regulated and controlled, the molecular conformation of a polymer chain is accurately controlled, and the separation performance is optimized. According to the invention, by virtue of an external field strengthening technology, the intramolecular / intermolecular interaction is destroyed, and the macromolecular chain is converted from contraction to stretching, so that more functional sites are exposed, and the water isotope separation material designed by the invention has a huge practical application prospect.

The invention belongs to the technical field of thermoelectric materials and functional polymer materials, and particularly relates to thermoelectric hydrogel based on synergistic enhancement of zwitterions and a polar solvent as well as a method and application of the thermoelectric hydrogel. The thermoelectric hydrogel is obtained through the steps that a precursor solution is subjected to a polymerization reaction to form a gel matrix, then the gel matrix is soaked in a soaking solution, potassium ferricyanide / potassium ferrocyanide redox couple is introduced, and the thermoelectric hydrogel is obtained, and the precursor solution is prepared from acrylamide, N-isopropylacrylamide, dimethyl sulfoxide, N, N-dimethylformamide, N, N-dimethylformamide, N, N-dimethylformamide, N, N-dimethylformamide, N, N-dimethylformamide and N, N-dimethylformamide. The photoinitiator is prepared by mixing N, N-dimethylformamide, 1-ethyl-3-methylimidazolium tetrafluoroborate, a zwitterionic monomer [2-(methylacryloyloxy) ethyl] dimethyl-(3-sulfopropyl) ammonium hydroxide, a cross-linking agent N, N '-methylene bisacrylamide, a photoinitiator and deionized water. The thermoelectric hydrogel prepared by the invention has high mechanical strength, high ductility and high Seebeck coefficient, and has better temperature resistance.

The invention discloses a hydrogen energy fuel cell catalyst carrier based on a graphene graft polymer, which is characterized in that two-dimensional graphene is used as a substrate, the surface of the two-dimensional graphene is modified with an oxygen-containing functional group, and a functional polymer branch chain containing nitrogen, sulfur or phosphorus heteroatoms is covalently grafted to form a local three-dimensional network winding structure; the carrier is loaded with platinum, palladium, ruthenium and other metal or alloy nanoparticles, the particle size is 2-8 nm, the loading capacity is 10%-40%, and the particles are anchored to polymer functional sites or reduced in situ to a graphene defect area through coordination. A polymer branch chain has pH responsiveness and can adjust the local proton transmission efficiency; the grafting density is 3-15 grafting points per 100 carbon atoms, so that high dispersion and stable anchoring of metal particles are effectively realized; the specific surface area of the carrier is 400-800m < 2 > / g, the electrochemical active area is not less than 80m < 2 > / g, and the activity retention rate is greater than 80% after 5000 circles of accelerated durability tests. The activity, the stability and the proton conduction performance of the catalyst are remarkably improved, and the catalyst is suitable for high-performance fuel cells.

The invention belongs to the technical field of functional polymer composite caulking materials, and relates to a polyurethane caulking material based on shape memory assisted self-repairing and a preparation method thereof. The polyurethane caulking material is prepared from the following raw materials in parts by mass: a component A and a component B, the component A is prepared from 20 to 30 parts of isocyanate and 100 parts of polyhydric alcohol; and the component B comprises 1-13 parts of a sulfur-containing chain extender for providing dynamic disulfide bonds, 1-5.4 parts of a common chain extender, 0-30 parts of a plasticizer, 0.5-1.5 parts of a water removal agent and 20-40 parts of a solvent. During preparation, the component B and the component A are mixed at the temperature of 40-60 DEG C, defoamed at the temperature of 30-50 DEG C and then injected into a mold, and the polyurethane caulking material based on shape memory assisted self-repairing is obtained after curing. The problem that an existing polyurethane caulking material lacks self-repairing capacity after cracks are generated is solved.

The invention relates to the technical field of functional polymer composite materials, in particular to an intermediate film for laminated glass based on color generation of a photonic crystal structure and a preparation method of the intermediate film. The intermediate film comprises a thermoplastic resin matrix and a three-dimensional photonic crystal structure region dispersed in the thermoplastic resin matrix, wherein the three-dimensional photonic crystal structure region is formed by self-assembly of monodisperse microspheres, and the central wavelength of a photonic forbidden band of the region is located in a visible light range. According to the invention, a three-dimensional photonic crystal structure is constructed in the intermediate film, and structural color generation is generated by utilizing selective reflection of the photonic band gap effect on visible light with a specific wavelength. According to the laminated glass, the color is generated by interference of light instead of absorption of chemical pigments, so that the color can be continuously and regularly changed along with the change of an observation angle or an incident light angle, the dynamic and changing visual aesthetic feeling is given to the laminated glass, and the higher requirements of the fields of modern buildings, automobiles and the like on dynamic aesthetics and personalized appearance are met.

The invention discloses a preparation method and application of a high-sensitivity temperature-responsive cellulose-based structural color material, and belongs to the field of functional polymer materials. The preparation method comprises the following steps: adding an isopropanol solvent into a certain volume of aqueous solution to obtain an isopropanol dilute solution; hydroxypropyl cellulose is dissolved in an isopropanol dilute solution, a cholesteric liquid crystal structure is formed through self-assembly, a bright structural color is presented, and the hydroxy propyl cellulose structural color material is prepared. A hydroxy propyl cellulose structural color material is uniformly coated on the surface of a polydimethylsiloxane film containing carbon nanotubes, then the transparent polydimethylsiloxane film is used for sealing the hydroxy propyl cellulose structural color material, the temperature sensor with the visual structural color is prepared, and the temperature sensor with the visual structural color is attached to the skin of the human body and can display different colors along with temperature changes. The prepared structural color material is sensitive in response to temperature stimulation, rapid in color change and suitable for human body visual real-time temperature monitoring in the field of intelligent sensing.

The invention belongs to the field of functional polymer materials, and particularly relates to a temperature-sensitive core-shell moisture absorption microsphere based on a biomass source and a preparation method. The preparation method comprises the following steps: dissolving methyl cellulose in water to prepare a solution A; dissolving calcium lactate and LiCl in water according to a mass ratio of 1: (2-14) to prepare a solution B; uniformly mixing the two to obtain functionalized core liquid; and dropwise adding the core liquid into a sodium alginate coagulating bath to carry out ionic cross-linking reaction to form gel microspheres, and washing and freeze-drying to obtain the product. According to the invention, a stable structure with moisture absorption salt / temperature-sensitive methyl cellulose as a core and calcium alginate gel as a shell is constructed in one step through a reverse instillation molding technology. The structure can effectively prevent moisture absorption salt from leaking, efficient release of moisture can be achieved at the low temperature by means of the temperature-sensitive characteristic of methyl cellulose, and desorption energy consumption for taking water from air is remarkably reduced. The raw materials are green, the process is simple, and the prepared microspheres are good in moisture absorption performance, high in cycling stability and suitable for atmospheric moisture collection.

The invention discloses an organic micromolecule modified polyethersulfone composite dielectric film and a preparation method and application thereof, and belongs to the technical field of functional polymer composite materials and preparation thereof. The problems that an existing PESU-based dielectric film is insufficient in energy storage density and low in charging and discharging efficiency are solved. According to the PESU-based dielectric film, PMDA is doped in a PESU substrate through a blending process, the stacking and polarization characteristics of polymer chain segments are improved on the molecular level by means of the doping of PMDA, and the charge-discharge efficiency, the energy storage density and the breakdown field strength of the PESU-based dielectric film are remarkably improved while the excellent mechanical property of the PESU substrate is kept. Test results show that the obtained composite film achieves energy density of 8.6 J / cm < 3 > and energy storage efficiency of 67.0% under the field intensity of 560 kV / mm.

The invention discloses a biodegradable polypeptide-based circularly-polarized room-temperature phosphorescent material and a preparation method thereof, and relates to the technical field of photo-electromagnetic functional polymer materials. According to the invention, L-type or D-type glutamic acid-N-carboxyl anhydride is used as a monomer, and a small molecule initiator containing a phosphorescent element is adopted to initiate ring-opening polymerization to form chiral polypeptide; based on the chiral polypeptide, the biodegradable polypeptide-based circularly polarized room-temperature phosphorescent material is prepared through high-temperature drop casting and annealing treatment. The material prepared by the invention has excellent circular polarization room temperature phosphorescence performance and complete biodegradability, has wide application prospects in the fields of information encryption, biological probes, environment-friendly optical devices and the like, and realizes cooperation and unification of a high-performance photoelectric function and green sustainable development.

The invention provides a bactericidal anticorrosive composite coating and a preparation method thereof. The composite coating is obtained by reacting and curing raw materials including epoxy resin, an antibacterial substance based on a Schiff base structure and a curing agent, the antibacterial substance based on the Schiff base structure is characterized in that the antibacterial substance based on the Schiff base structure is obtained by carrying out a Schiff base reaction on components including polyethyleneimine and an aldehyde antibacterial agent. In some embodiments, the feedstock further includes a functional polymer PBFGn; the functional polymer PBFGn is obtained by carrying out free radical copolymerization reaction on components including butyl acrylate, hexafluorobutyl methacrylate and glycidyl methacrylate. According to the preparation method of the composite coating, efficient antibacterial components are stably integrated into a tough polymer network through a chemical method and automatically migrate to the surface, and long-acting and stable anti-corrosion and antibacterial effects and improved mechanical properties can be achieved.

The invention discloses a tung oil-based non-isocyanate polyurethane photo-thermal anti-icing coating as well as a preparation method and application thereof, and belongs to the field of functional polymer materials. The method comprises the following steps: taking tung oil-based epoxy resin as a raw material, reacting with carbon dioxide to prepare tung oil-based cyclic carbonate, and reacting amino-terminated polydimethylsiloxane with terephthalaldehyde to obtain modified polydimethylsiloxane. And mixing tung oil-based cyclic carbonate, modified polydimethylsiloxane and a specific sulfur-containing aromatic diamine curing agent, spraying, and carrying out programmed heating curing to form the coating on the surface of the base material. A stable liquid-like layer can be formed on the surface of the coating, and the coating has extremely low surface energy and can obviously delay icing time. Meanwhile, the coating is endowed with efficient photo-thermal conversion capability through a D-pi-A molecular structure constructed by sulfur-containing diamine, and quick and active deicing can be realized under the irradiation of sunlight.

The invention relates to the technical field of chemical preparation, and discloses a preparation method of a phthalimide compound, which comprises the following steps: S1, raw material mixing: sequentially adding phthalic anhydride, a primary amine compound, p-toluenesulfonic acid and phosphorus pentoxide into a reaction container with a stirring device and a temperature control module, and stirring for 1-2 hours; adding ethanol as a solvent, and carrying out a stirring reaction; s2, curing: cooling the reaction liquid to 20-25 DEG C, slowly adding deionized water into the reaction liquid while stirring, standing, and separating out a solid product; a traditional dehydrating agent is changed into a low-cost green dehydrating agent combination, so that the cost loss is reduced, the stimulation effect is reduced, the catalytic activity is equivalent to that of p-toluenesulfonic acid by adding a new sulfonic group functional polymer, but the problems of volatility of liquid acid and equipment corrosion are avoided, a low-toxicity and low-cost solvent of ethanol is added, the toxicity is reduced, and the environment-friendly dehydrating agent is prepared. The preparation is safer, the cost is lower, and the applicability is wider.

The invention discloses an interface molecularly imprinted polymer microsphere as well as a preparation method and application thereof, and relates to the technical field of functional polymer materials. The preparation method comprises the following steps: firstly, enabling template molecules to react with a silane coupling agent to form a template molecule compound; and then anchoring the template molecule compound on the surface of SiO2 particles, so that the template molecule compound simultaneously plays the dual roles of a stabilizer and an imprinting template in Pickering emulsion polymerization. And after the polymerization is completed, removing the template molecule modified SiO2 particles to obtain the polymer microspheres of which the imprinting sites are completely exposed on the surfaces of the microspheres. Molecular imprinting sites of the microspheres are uniformly distributed on the surface and are in an open and highly accessible state, so that the recognition rate and the binding capacity of target molecules are remarkably improved, and the microspheres have excellent selective enrichment and separation performance on target analytes; a reliable technical path is provided for practical application of the molecularly imprinted material in the fields of solid-phase extraction, sensing detection, medicine purification and the like.

The invention discloses an anaerobic denitrifying bacterial agent as well as a preparation method and application thereof, and belongs to the technical field of water environment treatment. The anaerobic denitrifying bacterium agent is prepared from the following components in parts by weight: 15 to 30 parts of sterile water, 15 to 60 parts of normal saline, 5 to 10 parts of micro-capsule embedded anaerobic denitrifying bacteria, 5 to 20 parts of a porous composite modified carrier, 10 to 30 parts of a carbon source, 4 to 7 parts of nutrient elements, 2.5 to 4 parts of a buffering agent and 1 to 5 parts of a stabilizer, the micro-capsule embedded anaerobic denitrifying bacteria are obtained by embedding anaerobic denitrifying bacteria with an alginic acid gel solution and a calcium chloride solution; the porous composite modified carrier is obtained by crosslinking modified nano iron oxide, modified nano titanium dioxide, a functional polymer solution and glutaraldehyde. The anaerobic denitrifying bacterial agent provided by the invention can effectively improve the efficiency of treating nitrogen pollution of a water body.

This invention belongs to the field of functional polymer composite materials technology, and more specifically relates to a titanium oxide cluster composite fiber membrane with broad-spectrum photoresponse, its preparation method, and its applications. The preparation method includes: using 3-fluorocatechol and titanate as reactants, a solvothermal reaction is carried out under an inert atmosphere to obtain trifluorocatechol-modified titanium oxide cluster crystals; then, these crystals are dissolved with thermoplastic polyurethane particles in an organic solvent to prepare a composite spinning solution, which is then electrospun and dried to obtain the composite fiber membrane. In this fiber membrane, the titanium oxide clusters are uniformly dispersed at the nanoscale, forming a three-dimensional porous network structure with a diameter of 100-1000 nm, exhibiting broad-spectrum strong absorption (300-1000 nm), superhydrophobicity, and excellent photothermal properties. This invention effectively solves the problem of inorganic nanoclusters agglomeration in organic matrices through surface modification, achieving synergistic antibacterial effects through photothermal and photocatalytic processes, and has broad application prospects in medical protection, intelligent thermal management textiles, and environmental purification.

The invention belongs to the technical field of biochemistry and functional polymer materials, and particularly relates to a polysaccharide-oligopeptide co-assembled intestinal flora regulation and control material and a preparation method thereof. The material is prepared from imine-boric acid ester double dynamic crosslinking modified chitosan, glycyl-tryptophan dipeptide, sodium lactate, citric acid, glycerol and a phosphate buffer solution. A reversible imine bond and a borate bond are introduced into chitosan molecules to construct a polysaccharide network with a double-dynamic crosslinking characteristic, and then the polysaccharide network and oligopeptide molecules are synergistically self-assembled to form a three-dimensional gel structure. The material has pH responsiveness, self-repairing property and slow-release function, and can realize continuous release of short peptides and selective regulation and control of probiotics in an intestinal environment. The prepared material is high in gel strength, good in structural stability and stable in oligopeptide release, and has remarkable promotion and inhibition selectivity on intestinal flora. The method provides an innovative co-assembly strategy for polysaccharide functionalization and micro-ecological intervention, and has a good application prospect.

The present application belongs to the technical field of antifouling coating, and particularly relates to an enzyme-containing organic silicon fouling release type antifouling coating and a preparation method thereof. The coating is mainly composed of amphiphilic functional polymer and antifouling enzyme. The antifouling enzyme is fixed by the amphiphilic functional polymer containing amino groups, and the antifouling enzyme is kept active by the hydrophilic property of the amphiphilic functional polymer. The enzyme-containing organic silicon fouling release type antifouling coating is prepared by adding the amphiphilic functional polymer immobilized antifouling enzyme into an organic silicon elastomer system. The organic silicon chain segment is used as an oleophilic part, and the antifouling enzyme is used in combination with the amphiphilic functional polymer. The stability of the antifouling enzyme in the organic solvent system and the seawater environment is ensured, the organic silicon elastomer coating has good antifouling performance and good environmental friendliness, the antifouling performance is further improved, the enzyme immobilization technology can be applied to the surface antifouling of marine ships and structures, and the enzyme immobilization technology can be applied to the pharmaceutical industry and daily chemical industry.

This disclosure relates to the field of functional polymer composite materials technology, specifically to composite materials and their preparation methods, storage containers and their preparation methods, and preparation apparatus. The composite material is composed of epoxy resin, a curing agent, and boron carbide, wherein the mass ratio of the epoxy resin, the curing agent, and the boron carbide is 100:(20~50):(5~35); wherein the epoxy resin is a multifunctional epoxy resin, and the curing agent is a room temperature curing agent; the composite material of this disclosure possesses excellent neutron absorption capacity, significant thermal stability, good corrosion resistance, and feasible engineering implementation performance.

The application discloses a method for preparing photoelectric dual-response sensing polymer materials with self-repairing performance by using commercial olefin precursors and functionalized polymers based on the method; the method directly copolymerizes flexible comonomers and vinyl aromatic hydrocarbon monomers, and under suitable polymerization conditions, the two monomers are polymerized in a random copolymerization manner to generate functional polymers with micro-phase separation characteristics; the above method provided by the application can upgrade the commercial olefin monomers to obtain self-repairing performance, optical and electrical sensing performance, the conversion efficiency is high, the process is simple, the functionalization upgrading of the olefin polymers lacking of functions can be fully realized, the cost can be significantly reduced, the environmental pollution and resource waste can be reduced, and the application range of the olefin materials is widened.

The invention discloses a self-repairing mute tire and a preparation method thereof, and relates to the technical field of tires, the self-repairing mute tire comprises a tire body, and a self-repairing rubber layer and a mute material which are sequentially attached to the inner wall of the tire body from inside to outside; the self-repairing adhesive layer is prepared from the following components: epichlorohydrin rubber, acrylate rubber, a rosinyl phenyl phosphine oxide isoxazolyl functional polymer, 4, 4-chloroformyl phenyl ether, a catalyst, 2, 2-bis [4-(4-aminophenoxy) phenyl]-1, 1, 1, 3, 3, 3-hexafluoropropane, trithiocyanuric acid, a filler, an accelerant TMTD (Tetramethylthiuram Disulfide) and an auxiliary agent; the rosinyl phenyl phosphine oxide isoxazolyl functional polymer comprises structural units introduced through a condensation polymerization reaction of the following monomers: glycerol triabietate, bis (4-carboxyl phenyl) phenyl phosphine oxide and 3, 5-isoxazoledicarboxylic acid. The tire is remarkable in self-repairing effect, good in mute performance, sufficient in performance stability and long in service life.

The application belongs to the technical field of marine functional polymer antifouling materials, and discloses an acrylic metal salt resin containing silicone and a capsaicin derivative structure, a preparation method and application thereof. The acrylic metal salt resin, silicone and a compound containing the capsaicin derivative structure are combined, the viscosity of the resin is synergistically controlled by using various functional acrylate monomers, the hydrophobic silicone chain segment is effectively integrated with the capsaicin derivative structure which has antibacterial activity and hydrophilic properties, a novel acrylic metal salt resin containing silicone and the capsaicin derivative structure is prepared, the resin has multifunctional antifouling properties such as hydrophilic / hydrophobic regulation, enhanced antibacterial activity and self-polishing renewal, the raw materials are low in price, and the obtained product has excellent antibacterial performance and more than 6 months of real sea antifouling capacity.

The application provides a sound insulation rubber composite material and a preparation method and application thereof, and belongs to the technical field of rubber, and the preparation method comprises the following steps: butyl rubber and ethylene-propylene-diene rubber are added into a banbury mixer for plasticizing, then carbon black, a metal oxide compound, a modifying additive, a vulcanization activator and an antioxidant are added for mixing, vulcanization accelerators and vulcanization agents are further added for mixing, and then glue is discharged to obtain a rubber compound; the rubber compound is placed in an open mill for thin mixing and storage to obtain a mixed rubber; the mixed rubber is vulcanized on a flat vulcanizing machine to obtain the sound insulation rubber composite material; wherein the metal oxide compound is prepared by calcining and crushing cerium dioxide, titanium dioxide and silicon dioxide; and the modifying additive is prepared by using a functional polymer and modified hollow glass microbeads; the sound insulation rubber composite material has good sound insulation performance and durability, and the preparation process is simple.

The invention belongs to the field of novel functional polymer materials, and discloses a preparation method of a selenium-containing polymer material capable of fixing metal ions, and the preparation method comprises the following steps: S1, adding PTMEG into a round-bottom reaction flask filled with inert gas, and placing the round-bottom reaction flask in an oil bath pan for melting; s2, MDI, dimethylglyoxime, DSe and anhydrous N, N-dimethylacetamide are sequentially added and fully mixed; s3, stannous octoate and CuCl2 are added at the same time; s4, keeping the temperature of the oil bath pan and continuously reacting; s5, after the reaction is finished, a polymer is precipitated out, and secondary cleaning is conducted through methyl alcohol. The preparation method has the advantages that oximido is introduced into a polyurethane molecular structure to fix metal ions, meanwhile, selenium is introduced in a covalent fixation mode, and through double-site introduction of the metal ions and the selenium, the molecular structure of the polyurethane is greatly improved; the NO catalytic release rate of the material can be regulated and controlled, so that the biocompatibility and applicability of the polymer material in a blood environment are improved, and the application scene is further widened.

The invention relates to the technical field of cosmetics, and discloses a micro-emulsified quaternary ammonium salt-80 color fixing and repairing composition and a preparation process thereof, the composition comprises quaternary ammonium salt-80, an anionic functional polymer, an energy field response type dissociation accelerator, an oil phase carrier, a nonionic emulsifier, a penetration enhancer and water; the preparation method comprises the following steps: firstly forming a primary emulsion containing quaternary ammonium salt-80, then slowly adding an anionic functional polymer solution, and finally carrying out ultrahigh pressure homogenization. The stable nanoscale functional complex is prepared from incompatible components in situ through a controlled process path, and the obtained composition is clear, transparent and good in stability and has excellent color fixing performance and remarkable repairing and conditioning effects on dyed hair.

The invention discloses a sprayable hydrogel composite coating and a preparation method thereof in the field of functional polymer coating materials. The preparation method of the coating comprises the following steps: synthesizing two key compounds: one is a double-dynamic silane cross-linking agent containing catechol and boric acid ester; the adhesive is prepared by esterifying and deprotecting a phenylboronic acid ester derivative and then reacting with a silane coupling agent, and simultaneously provides strong adhesion and dynamic cross-linking capability; and the sulfobetaine-Schiff base bifunctional antibacterial monomer is prepared from a betaine monomer and natural aldehyde through dehydration condensation, and has anti-fouling and antibacterial functions. When the coating is prepared, the acrylamide, the acrylic acid, the antibacterial monomer, the hydrophobic nanoparticles and the photoinitiator are dispersed in a solvent, then the cross-linking agent is added and mixed, a precursor solution is obtained, and the coating is obtained after spraying and ultraviolet curing. The coating prepared by the method shows excellent adhesion, good toughness and long-acting antibacterial and antifouling properties, and is suitable for multiple fields of biomedicine, marine antifouling and the like.

The present invention relates to a two-component coating composition, a process for producing the two-component coating composition, and the use of the two-component coating composition for coating metals, wood, plastics and glass, the two-component coating composition comprising: component (i), which is a composition comprising ia) at least one polyisocyanate, and ib) at least one gamma-lactone, which carries 1 or 2 radicals selected from C1-C6-alkyl, C1-C6-alkoxy and methylcarboxylic acid-C1-C4-alkyl, and component (ii), which comprises an aqueous dispersion of at least one hydroxyl-functional polymer P.

The application belongs to the field of oil-water separation membranes, and provides an underwater super-amphiphobic polyvinylidene fluoride oil-water separation membrane and a preparation method thereof.The separation membrane is composed of a polyvinylidene fluoride membrane substrate and a functional polymer, the functional polymer is a polyamide polymer, the amount of the functional polymer is 60% to 80% of the mass of the polyvinylidene fluoride membrane substrate, the molecular chains of the functional polymer and the polyvinylidene fluoride membrane substrate are intertwined to form a semi-interpenetrating network structure, the surface of the separation membrane has a plurality of uniformly distributed nano-pillar structures, and the inside of the separation membrane has a membrane hole structure; the separation membrane has underwater oleophobicity and oil-water emulsion separation performance. The application simultaneously improves the super-amphiphobic property and bidirectional oil-water emulsion separation performance of the polyvinylidene fluoride oil-water separation membrane, effectively widens the application scenarios of the polyvinylidene fluoride oil-water separation membrane, and simplifies the preparation process of the underwater super-amphiphobic polyvinylidene fluoride oil-water separation membrane.

The application discloses a preparation method of a temperature-ultraviolet light double response type functional polymer, specifically comprising the following steps: preparing a macromolecular initiator PEG2-ABCPA; preparing a p-styrylmethyl diethanolamine borate monomer VMAB; and performing a free radical polymerization reaction on the macromolecular initiator PEG2-ABCPA, the p-styrylmethyl diethanolamine borate monomer VMAB and 7-(4-vinylbenzyloxy)-4-methyl coumarin VBC to obtain a block copolymer, i.e. the temperature-ultraviolet light double response type functional polymer. The polymer not only has unique amphiphilic properties, but also exhibits double response to temperature and ultraviolet light, thereby showing wide application prospects in the fields of drug controlled release, intelligent materials, photoelectric devices and the like.