453 results about "Comonomer" patented technology

The invention relates to a thermoplastic molding composition (P) comprising: (A) thermoplastic polymer composition (A) comprising: (A-1) 10 to 50 wt.-% of graft copolymer (A-1), (A-2) 1 to 50 wt.-%, of thermoplastic polymer matrix (A-2) based on one or more vinylaromatic copolymers, (A-3) 20 to 50 wt.-%, of polymerized alkyl methacrylate component (A-3), and (A-4) 0 to 45 wt.-% of comonomer which is copolymerized with the at least one polymerized alkyl methacrylate component (A-3), where the sum of (A-1), (A-2), (A-3) and optional comonomers (A-4) is 83.2 to 99.8 wt.-%; (B) a hindered amine light stabilizer composition (B), comprising at least two of substances (B-1) to (B-3): (B-1) 0 to 0.9 wt.-%, of at least one hindered amine light stabilizer having a dipiperidine structure with at least one alkyl group at each of the 2 and 6 positions of the dipiperidine structure (B-2) 0 to 0.9 wt.-%, of a hindered amine light stabilizer mixture having a monopiperidine structure with at least one alkyl group at each of the 2 and 6 positions of the monopiperidine structure, and (B-3) 0 to 2 wt.-%, of at least one hindered amine light stabilizer having a polymeric structure comprising piperidine groups with at least one alkyl group at each of the 2 and 6 positions of the piperidine groups (C) 0 to 5 wt.-%, of one or more further additives (C), different from (B); and (D) 0 to 10 wt.-%, of colorants, dyes and / or pigments (D), different from (C); wherein the constituents (A) to (D) sum up to 100 wt.-% of the molding composition (P).

The present invention relates to a vinyl pyrrolidone copolymer of N-vinyl pyrrolidone and a maleic acid comonomer wherein the vinyl pyrrolidone copolymer is functionalized with a benzophenone substituent (BP) wherein the amount of maleic acid in the vinyl pyrrolidone copolymer is less than 1 mol%, preferably from 0.1 to 0.95 mol%, further preferably from 0.1 to 0.90 mol%, more preferably from 0.1 to 0.85 mol%, more preferably from 0.2 to 0.88 mol%, and the amount of N-vinyl pyrrolidone is less than 1 mol%, preferably from 0.1 to 0.95 mol%, further preferably from 0.1 to 0.90 mol%, more preferably from 0.1 to 0.85 mol%, more preferably from 0.2 to 0.88 mol%. The invention relates to the technical field of organic solvents, in particular to a method for preparing the organic solvents, which comprises the following steps of: preferably, 1-3mol%, more preferably, 0.3-0.88 mol%, more preferably, 0.4-0.88 mol%, even more preferably, 0.5-0.85 The vinyl pyrrolidone copolymer of the present invention is particularly suitable for use in coatings of medical devices and / or medical aids. Thus, the invention also relates to a composition comprising a vinyl pyrrolidone copolymer and optionally a cross-linking agent, and a medical device having a coating comprising a cross-linked vinyl pyrrolidone copolymer and optionally a cross-linking agent.

The invention discloses vinyl fluorine-containing polysiloxane and a preparation method thereof, and relates to the technical field of organic silicon materials. According to the invention, high-activity fluorine-containing potassium hydroxide silanolate is used as a catalyst to realize high-efficiency catalysis; d3F serves as a main monomer, D3Vi serves as a comonomer, deionized water is introduced for the first time to serve as a retarder, and implosion is effectively inhibited; vinyl dimethyl ethyoxyl silane is used as an end-capping reagent for the first time, end group vinylation is synchronously realized, and end group and side chain divinyl polysiloxane is prepared; through cooperation of ring-opening polymerization and condensation polymerization, the reaction process is mild and controllable, the product viscosity is controllable, the crosslinking activity is high, and the application range is remarkably widened.

The invention discloses a protective base film for a polaroid and a preparation method of the protective base film, and belongs to the technical field of optical display equipment protective films. The protective base film comprises an antistatic PET base material layer and a self-adhesive layer, the antistatic PET base material layer is prepared by blending optical-grade PET slices and antistatic master batches, the master batches are prepared by taking ionic liquid dihydric alcohol as a comonomer, and the base film is endowed with lasting and stable intrinsic antistatic performance; the self-adhesive layer is formed by melting and blending a polyurethane acrylate prepolymer, a modified montmorillonite filler, other matrix materials and auxiliaries according to a specific ratio and carrying out an online UV curing process. Through innovative material design and an integrated forming process, the prepared protective base film has excellent optical transparency, lasting antistatic property, appropriate bonding strength, clean stripping property and outstanding damp-heat aging resistance, the comprehensive performance is remarkably superior to that of a traditional gluing protective film, and the production process is more environment-friendly and efficient.

The invention discloses a composite membrane with adsorption separation and catalytic degradation functions as well as a preparation method and application of the composite membrane. The composite membrane is supported by a porous base membrane, a polyamide separation layer formed by reaction of a 3, 4-dihydroxyphenylethylamine and 2, 3-diaminophenol comonomer and acyl chloride is constructed on the surface of the porous base membrane through interfacial polymerization, and FeCo-g-C3N4 nanosheets are anchored in situ; the membrane can efficiently activate peroxymonosulfate (PMS) to generate free radicals under the nearly neutral condition, efficient interception and catalytic degradation of organic pollutants (such as antibiotics) are synchronously achieved, and heavy metal ions (such as Pb < 2 + > and Cd < 2 + >) are adsorbed through a functional monomer structure; the invention provides an interfacial polymerization preparation method of the membrane. The composite membrane breaks through the limitation of'only interception but not degradation 'of a traditional membrane, realizes integration of'separation-adsorption-degradation', can remarkably reduce the volume of concentrated water and reduce the toxicity of the concentrated water, and is suitable for advanced treatment of wastewater containing composite pollutants in the industries of pharmacy, printing and dyeing and the like.

The invention provides a high-safety flexible pole piece, a preparation method and a flexible lithium ion battery, the pole piece comprises a current collector and a coating arranged on the surface of the current collector, the coating comprises a flexible isolation structure and a plurality of electrode units, the flexible isolation structure constructs a plurality of accommodating areas isolated from each other on the surface of the current collector, the number of the electrode units is multiple, and the flexible isolation structure is arranged in the accommodating areas. The plurality of electrode units are respectively and independently arranged in different accommodating areas. According to the invention, accurate prevention and control of thermal runaway are realized through the electrode structure design of partition isolation and a material system with multiple hydrogen bonds synergistic effect. The electrode is divided into independent units by the flexible isolation structure, so that heat spreading is effectively blocked; and a hydrogen bond network formed by the hydroxyl-containing comonomer I, PI, PET and hexaphenoxy cyclotriphosphazene significantly enhances the interface stability and flame retardant efficiency of the electrode and the isolation structure, and improves the intrinsic safety of the battery while ensuring the flexibility of the battery.

The present invention relates to a cable comprising a polypropylene composition comprising (A) from 80.0 to 99.0 wt.-%, preferably from 82.5 to 97.2 wt. %, most preferably from 85.0 to 95.0 wt.-% of a copolymer of propylene and comonomer units selected from ethylene and alpha-olefins having from 4 to 12 carbon atoms having a total amount of comonomer units of from 10.0 to 16.0 wt %, preferably from 11.0 to 15.0 wt %, most preferably from 12.0 to 14.0 wt %, based on the total amount of monomer units of the copolymer of propylene (A); a melt flow rate MFR2 of from 0.5 to 2.5 g / 10 min, preferably from 0.8 to 2.3 g / 10 min, still more preferably from 1.0 to 2.0 g / 10 min and most preferably from 1.2 to 1.7 g / 10 min; a xylene cold soluble (XCS) fraction in a total amount of from 25.0 to 50.0 wt %, preferably from 27.5 to 45.0 wt %, more preferably from 30.0 to 42.5 wt % and most preferably from 32.5 to 40.0 wt %, based on the total weight amount of the copolymer of propylene (A); and (B) from 1.0 to 20.0 wt.-%, preferably from 2.5 to 17.5 wt %, most preferably from 5.0 to 15.0 wt.-% of a copolymer of ethylene and comonomer units selected from alpha-olefins having from 4 to 12 carbon atoms obtainable in the presence of a single site catalyst and having a density of from 860 to 930 kg / m3, preferably from 865 to 925 kg / m3, most preferably from 870 to 920 kg / m3, determined according to ISO 1183.

The present invention relates to a polypropylene composition comprising (A) from 80.0 to 99.0 wt.-% of a copolymer of propylene and comonomer units selected from ethylene and alpha-olefins having from 4 to 12 carbon atoms having a total amount of comonomer units of from 10.0 to 16.0 wt %, based on the total amount of monomer units of the copolymer of propylene (A); a melt flow rate MFR2 of from 0.5 to 2.5 g / 10 min; a xylene cold soluble (XCS) fraction in a total amount of from 25.0 to 50.0 wt %, based on the total weight amount of the copolymer of propylene (A); and (B) from 1.0 to 20.0 wt.-% of an ethylene polymer having a density of from 915 to 960 kg / m3; and a melt flow rate MFR5 (190° C., 5 kg) of from 0.05 to 5.0 g / 10 min, an article comprising said polypropylene composition, preferably a cable comprising an insulation layer comprising said polypropylene composition, and the use of said polypropylene composition as cable insulation for medium and high voltage cables.

The invention relates to the technical field of films, in particular to a preparation method and application of a waterproof and oil-proof ventilation valve for food packaging. The preparation method comprises the following steps: carrying out plasma activation treatment on the porous polytetrafluoroethylene-based membrane; preparing fluoroalkyl silane modified silicon dioxide nano particles; preparing fluorine-containing organic silicon-silicon dioxide sol containing vinyl; a cross-linking layer is constructed through vacuum impregnation; preparing a hydrophilic / hydrophobic comonomer solution; copolymerized chain grafting is initiated by ultraviolet light; and water-based fluorocarbon emulsion is sprayed on the surface for curing. The obtained breather valve has super-hydrophobic and oleophobic characteristics, keeps high air permeability and high water vapor permeability at the same time, has the air permeability retention rate exceeding 95% after 10 times of moist heat sterilization, and is suitable for balancing internal and external pressure and blocking water and oil phase liquid permeation in the high-temperature and high-pressure sterilization process of a food packaging container.

The invention provides a phosphorus-nitrogen coordinated metallocene compound and a preparation method and application thereof, the compound has a structure as shown in a formula I: in the formula I, M is selected from IVB group metals in the periodic table of elements; r1 is selected from hydrogen, halogen, C1-C10 direct or branched alkyl, and C1-C3 alkoxy; r2 is selected from hydrogen and C1-C6 straight chain or branched chain alkyl; y is selected from chlorine, C1-C3 alkyl substituted or unsubstituted by trimethylsilyl, and amino substituted by trimethylsilyl. The phosphorus-nitrogen coordinated metallocene compound provided by the invention has relatively high thermal stability, catalytic activity and comonomer insertion rate, and can realize high-temperature solution polymerization of ethylene and norbornene.

Disclosed herein is a blown film comprising at least 50 wt.% of a polyethylene composition comprising the reaction product of ethylene and optionally, one or more alpha-olefin comonomers, wherein the polyethylene composition is characterized by the following properties: a melt index, I2, of from 0.1 to 2 g / 10 min; a density of from 0.940 to 0.970 g / cm³; a melt flow ratio, I10 / I2, of from 5.5 to 7.2; and a molecular weight distribution (Mw / Mn) of from 2.2 to 3.5.

A method of integrated and improved one-step production of carbon fiber precursors is described, in particular from comonomer start up until the spinning step to obtain the final fiber precursor.

The invention discloses a semi-aromatic transparent polyamide material and a preparation method thereof, and belongs to the technical field of high polymer materials. The material is a random copolymer prepared by condensation polymerization of aromatic dibasic acid, aliphatic diamine and a multifunctional comonomer, the multifunctional comonomer has a general formula of H2N-R3-(R2-O) n-R1-(O-R2) n-R3-NH2, under the protection of inert gas, the raw materials are mixed with water, a catalyst and an end-capping reagent to form a slurry, the slurry is heated, pressurized and pre-polymerized, the pre-polymerized slurry is cooled to room temperature, and a finished product is obtained. And carrying out decompression dehydration or solid phase polycondensation to obtain a final product. The semi-aromatic transparent polyamide material synchronously realizes high transparency, high heat resistance and excellent mechanical properties, solves the problem of performance balance in the prior art, and is suitable for the high-end fields of optical lenses, electronic device shells, automobile lampshades and the like.

The invention relates to a heterophasic polypropylene composition with high melting temperature, moderate softness and high impact strength. Specifically, the present invention relates to a heterophasic polypropylene composition comprising a propylene copolymer (A) matrix of propylene with ethylene and 1-butene comonomer units and a propylene ethylene elastomer (B) dispersed in the matrix. Furthermore, the present invention relates to a process for preparing said heterophasic polypropylene composition in the presence of a Ziegler-Natta catalyst, as well as to articles comprising said heterophasic polypropylene composition and to the use of said heterophasic polypropylene composition in articles.

The application provides a high-flexibility dielectric positive electrode binder and a preparation method thereof and a solid-state battery positive electrode. The high-flexibility dielectric positive electrode binder comprises a fluoropolymer matrix and a fast ion conductor; the fluoropolymer matrix is a copolymer of vinylidene fluoride (VDF) and a fluorine-containing comonomer, the fast ion conductor is in a one-dimensional nanowire shape and is dispersed in the fluoropolymer matrix; and the mass fraction of the fast ion conductor is 1% to 20% based on the fluoropolymer matrix. The application can simultaneously solve three core problems of physical continuity of an ion conduction path in the positive electrode, inhibition of a space charge layer at an interface and mechanical coating of active particles, thereby significantly improving the rate performance, cycle stability and actual energy density of the solid-state battery.

The present disclosure relates to a composition comprising from 1% to 99% by weight of a first ethylene acid copolymer having a melt strength (MS) < = 1.5 cN, the first ethylene acid copolymer comprising the polymerization reaction product of: from 60% to 99% by weight of an ethylene monomer; and a carboxylic acid comonomer. The composition further comprises: 1% to 30% by weight of a second ethylene acid copolymer comprising the polymerization reaction product of: 60% to 99% by weight of an ethylene monomer; and a carboxylic acid comonomer; wherein: the second ethylene acid copolymer has at least 8 wt% more carboxylic acid comonomer than the first ethylene acid copolymer; the composition comprises greater weight percent of the first ethylene acid copolymer than the second ethylene acid copolymer; and the composition comprises a total acid content of less than or equal to 6.5 wt% based on the total weight of carboxylic acid comonomers in the composition.

The present invention relates to a polypropylene composition, a process for obtaining the same and an article, in particular an extruded article, such as an automotive part, comprising the same. The PP composition comprises 20-60 wt% of a first heterophasic propylene copolymer (HECO1) having a MFI of at least 60 dg / min; 10-40 wt% of a second heterophasic propylene copolymer (HECO2) having a MFI of at most 55 dg / min; 2-20 wt% of a first elastomer consisting of ethylene and octene monomers having a density of at most 0.860 g / cm 3 ; 2-20 wt% of a second elastomer comprising ethylene and alpha-olefin comonomers having 4 to 8 carbon atoms having a density of at least 0.861 g / cm 3 ; and 2-30 wt% of talc having an aspect ratio in the range of 100-140.

The invention provides a sealing material for wet tissues as well as a preparation method and application of the sealing material. The sealing material comprises a hydrophobic oil phase and temperature-sensitive microspheres, the temperature-sensitive microspheres are dispersed in the hydrophobic oil phase to form a heterogeneous system; the temperature-sensitive microsphere is of a core-shell structure, and the core-shell structure comprises an inner core and an outer shell wrapping the inner core; the inner core comprises a temperature-sensitive cross-linked network and polysaccharide capable of being subjected to ionic cross-linking, and the shell is a porous shell body network and is formed by carrying out copolymerization reaction on a natural polymer derivative capable of being subjected to photo-crosslinking and a comonomer containing an active chemical group. The temperature-sensitive microspheres with core-shell structures are designed to cooperate with the hydrophobic oil phase, rapid hemostasis of dynamic and bleeding wet tissues is realized through a dual drainage mechanism of instantaneous drainage of the hydrophobic oil phase and active pumping of the temperature-sensitive inner core, and then stable chemical bonding is formed through cross-linking of the shell and tissue protein, so that the rapid hemostasis of the dynamic and bleeding wet tissues is realized. And the wet tissue is sealed.

The present disclosure relates to polyethylene polymers and films made therefrom. In some embodiments, the polyethylene copolymer comprises 90 wt% or more ethylene units and the balance of C3-C20 comonomer units. The polyethylene copolymer has a bimodal composition distribution, a density of from about 0.914 g / cm3 to about 0.925 g / cm3, a melt index of from about 0.1 g / 10 min to about 1 g / min, a high load melt index (HLMI) of from about 1 or 12 g / 10 min to about 30 g / 10 min, a melt index ratio (MIR) of from about 30 or 35 to about 60 or 65, and a molecular weight distribution (MWD) of from about 3 or 4.5 to about 7 or 7.5. The copolymers may also exhibit a bimodal compositional distribution such as a combination of a wide orthogonal compositional distribution (BOCD) and a long chain branching (LCB).

The invention discloses a preparation method of a phosphorus-doped high-performance ternary polyacrylonitrile precursor and a carbon fiber, and belongs to the field of preparation of carbon fiber precursors. The method comprises the following steps: under the protection of nitrogen, respectively adding a first monomer acrylonitrile, a second monomer itaconic acid and an initiator into a solvent, introducing a third monomer allyl phosphate by adopting a continuous dropwise adding mode, reacting at a certain temperature to obtain an acrylonitrile terpolymer, and carrying out ammonia ammonification, filtration, vacuum monomer removal and defoaming to obtain a spinning solution; carrying out dry-jet wet spinning, water washing, drafting, oiling, drying and densifying, high-pressure steam drafting, heat setting and other processes to obtain a polyacrylonitrile precursor; and pre-oxidizing, carbonizing and graphitizing the precursor to obtain the final carbon fiber. The phosphorus-containing comonomer is introduced in the polymerization stage, so that the phosphorus element is uniformly distributed in the fiber, the catalytic graphitization effect of phosphorus is fully exerted, the graphitization temperature is reduced by 200-300 DEG C, and the preparation cost of the high-modulus carbon fiber can be remarkably reduced.

This invention belongs to the field of functional materials technology, and more specifically, relates to a linear polymer, a photoreactive luminescence-enhanced crosslinked polymer, and their applications. The linear polymer is obtained by homopolymerization or copolymerization with other monomers of an organometallic complex. The linear polymer emits almost no light under ultraviolet or visible light excitation, but undergoes a photochemical reaction under strong ultraviolet irradiation, resulting in polymer crosslinking and enhanced luminescence. The degree of crosslinking, the intensity of luminescence after crosslinking, and the color of the luminescence can be controlled by the ratio of the polymerizable monomer to the comonomer of the organometallic complex. The crosslinked polymer can be used in fields such as information encryption, security anti-counterfeiting, and data storage.

The present disclosure relates to polyethylene copolymers. The polyethylene copolymers include 90 wt% or greater ethylene units and a remainder balance of C3-C20 comonomer units. The polyethylene copolymers have a melt index of about 0.1 g / 10min to about 2.2 g / min, a high load melt index (HLMI) of about 10 g / 10 min to about 50 g / 10 min, a melt index ratio (MIR) of about 20 to about 35, a molecular weight distribution (MWD) of about 3 to about 7, a melt strength of about 0.03 N to about 0.10 N, a ∆CWF / ∆T of about wt% / 0.02 °C to about 0.03 wt% / °C, a SignCDI *ɳ0*1032 / (Tan delta (ω=0.1) * MW6.82) of about 2 Pa*s / [(g / mol)6.82]to about 8 Pa*s / [(g / mol)6.82], and a CDI_NWZ,w of about 0.200 to about 0.33.

The invention discloses a high-temperature-resistant high-activity metallocene catalyst and application thereof, and belongs to the technical field of olefin polymerization catalysts. The catalyst provided by the invention is formed by taking a fused ring structure with a rigid framework as a ligand framework and coordinating with transition metal titanium, zirconium or hafnium, so that the catalyst has excellent thermal stability and high catalytic activity, and is suitable for copolymerization reaction of ethylene and alpha-olefin. In the high-temperature polymerization reaction, the catalyst provided by the invention realizes efficient copolymerization of ethylene and alpha-olefin, and the obtained copolymer not only has higher molecular weight, but also has higher comonomer insertion amount, so that the structure and performance of the product are effectively regulated and controlled.

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.

A method for preparing a contact lens containing an ultraviolet (UV) blocking agent is disclosed. This method comprises (a) polymerizing a monomer mixture containing (i) one or more contact lens forming comonomers and (ii) one or more UV blocking agents containing a phenol group having a protected hydroxyl moiety and one or more ethylenically unsaturated reactive groups to obtain a polymerization product containing one or more UV blocking agents containing a phenol group having a protected hydroxyl moiety, and (b) deprotecting the protected hydroxyl moiety of one or more UV blocking agents of the polymerization product.

Embodiments of the polymer blend can include a first polymer composition and a second polymer composition. The first polymer composition can include a polyolefin having a thermal transition temperature of at least 100°C and a graftable monomer having at least one acid or anhydride functional group grafted onto the polyolefin. The second polymer composition can include an E / X / Y ethylene interpolymer, where E is an ethylene monomer and comprises greater than 50 wt% of the interpolymer, X is an α,β-unsaturated C3-C8 carboxylic acid and comprises greater than 0 to 25 wt% of the interpolymer, and Y is an optional comonomer comprising a C1-C8 alkyl acrylate.

A drug-polymer conjugate, which is a copolymer of at least one monomer of formula (I) where: X may be the same or different at each occurrence and represents a terminal functional group comprising an alkyne or an azide; Q is independently selected at each occurrence and may be present or absent and when present, represents a linking group; R is selected from the group consisting of linear or branched hydrocarbon, optionally substituted aryl and optionally substituted heteroaryl; D is a releasable bicyclic prostaglandin; L is a linker group; and at least one co-monomer of Formula III J-(Y1-A)n, J represents a linking functional group, n is 2 to 8 preferably 3 to 8; Y1 comprises a polyether of formula (ORa)m wherein Ra is independently ethylene, propylene and butylene and m is from 1 to 300 (preferably 2 to 300) and the polyether is in chain with one or more groups which are preferably selected from one or more of optionally substituted straight or branched C1 to C10 alkylene, amino, ether, ester, amide, carbonate and carbamate; A may be the same or different at each occurrence and represents a group comprising a terminal functional group comprising an alkyne or an azide functionality, wherein said terminal functional group is complementary to the terminal functional group X of formula (I) providing triazole moieties from reaction of X and A.

Embodiments of the present disclosure generally relate to polyethylene copolymer resins and methods thereof. In some embodiments, a polymer includes a polyethylene copolymer having ethylene units and comonomer units. The polyethylene copolymer includes a density of about 0.907 g / cm3 to about 0.913 g / cm3, wherein the density of the polyethylene copolymer is determined in accordance to ASTM D1505. The polyethylene copolymer further includes a melt index (I2) of about 4 g / 10 mm to about 8 g / 10 mm, wherein the I2 is determined in accordance to ASTM DI 238. The polyethylene copolymer further includes an olefin comonomer content of about 12.5 wt% to about 15 wt%.

A polyethylene suitable for use in blown film can comprise ethylene derived units and C3 to C12 α-olefin derived units at 0.5 wt % to 10 wt % of the polyethylene and have a reversed-co-monomer index (RCI,m) of 35 to 100, a comonomer distribution ratio (CDR-2,m) of 1.20 to 1.80, and a weight average molecular weight (Mw) to number average molecular weight (Mn) of 5 to 7.

The application belongs to the technical field of membrane distillation, and discloses a kind of persistent super-hydrophobic uniform pore separation membrane and its preparation method and application, monomer, polymer membrane material, solvent, pore-forming agent, initiator are mixed according to proportion, constant temperature stirring, under nitrogen atmosphere and polymer membrane material conventional dissolution temperature, initiate in-situ copolymerization, form casting solution containing strong hydrophobic crosslinkable copolymer A-B, then the casting solution is made into nascent liquid membrane, through short time spray treatment accelerates liquid membrane surface interface phase separation, then the membrane is immersed in coagulation bath and crosslinked and solidified, to obtain persistent super-hydrophobic uniform pore separation membrane, its water contact angle is greater than 150°, and the tensile strength is greater than 3.5 MPa. The preparation method is simple in operation, and the reaction conditions are mild. In the process of membrane preparation, the membrane material is persistent super-hydrophobic and the pore size is uniform, which promotes the improvement of the membrane anti-wetting ability.