655 results about "Benzophenone" patented technology

The invention discloses a synthetic method of a water soluble ultraviolet light absorber BP-9. The method mainly comprises the following process steps: (1) carrying out methylation on the main raw materials of 2, 2', 4, 4'-tetrahydroxyl benzophenone, a transition metal salt catalyst and a mixed solvent which is prepared from dichloroethane and anhydrous ethanol in equal parts by weight to obtain 2, 2'-dihydroxyl-4, 4'-dimethoxyl benzophenone; (2) carrying out sulfonation reaction on the main raw materials of methylate, sulfamic acid and C1-C3 halohydrocarbon to obtain 2, 2'-dihydroxyl-4, 4'-dimethoxyl benzophenone-5, 5'-disulfonic acid; and (3) carrying out neutral reaction on the main raw materials of sulfonated product, inorganic base and ethanol water to finally obtain the BP-9 product. The synthetic method disclosed by the invention is few in reaction step, low in cost, high in product purity and stable in quality, and raw materials are easily available.

The invention discloses a modified polysiloxane coating for a stainless steel pot and a preparation method of the modified polysiloxane coating, and belongs to the technical field of polysiloxane coatings. Comprising the following raw materials in parts by weight: 60-70 parts of hydroxyl polydimethylsiloxane, 20-30 parts of acrylate resin, 15-20 parts of ethanol, 25-30 parts of deionized water, 6-18 parts of modified nano aluminum oxide, 2-4 parts of a friction reducing agent, 0.2-0.4 part of benzophenone and 1-3 parts of a flatting agent. Polysiloxane is used as a main component, so that the coating is endowed with excellent heat resistance; wherein the antifriction agent can improve the wear resistance of the coating; wherein the leveling agent improves the surface flatness of the coating; wherein the modified nano aluminum oxide has good compatibility with polysiloxane, is not easy to agglomerate in the coating, has good dispersity, and can greatly improve the heat resistance, hardness and easy-to-clean property of the coating; the performance is stable and the service life is long; the method has important application value in the technical field of polysiloxane coatings.

The invention belongs to the technical field of coatings, and relates to a polysiloxane epoxy hybrid environment-friendly coating and a preparation method thereof. The coating belongs to an environment-friendly solvent type coating with low VOC content, modified epoxy resin is adopted as a base, auxiliaries such as a film-forming agent and a dispersing agent are added, and benzophenone and tertiary amine composite photoinitiator is supplemented, so that the prepared coating has good corrosion resistance, high temperature resistance and the like, and the coating can quickly form a film at normal temperature and under the UV illumination condition, shortens the curing period, and is suitable for large-scale popularization and application. The emission of VOC (volatile organic compounds) is reduced.

The invention discloses a super-smooth, anti-corrosion and anti-coagulation hydrogel composite coating on the surface of a medical instrument as well as a preparation method and application of the super-smooth, anti-corrosion and anti-coagulation hydrogel composite coating, and the super-smooth, anti-corrosion and anti-coagulation hydrogel composite coating is a surface hydrogel composite coating formed by taking N-(3, 4-dihydroxyphenethyl)-2-benzoylbenzamide (BPDA) as a primer and grafting a hydrophilic polymer on the primer. BPDA is deposited on the surface of the substrate, then hydrophilic monomer surface graft polymerization is initiated by light, and a hydrogel coating is constructed on the surface of the BPDA substrate. The BPDA primer provides excellent corrosion resistance, the corrosion rate of a metal substrate is effectively reduced, and benzophenone derivatives with photoreaction activity on BPDA molecules can mediate firm combination of the hydrogel layer; after meeting water, a stable and compact hydrated layer is formed, the super-lubricating property is achieved, adhesion of protein and cells can be remarkably inhibited, and thrombus formation is effectively prevented. The anti-corrosion and anti-blood coagulation coating has excellent anti-corrosion and anti-blood coagulation properties, and is widely applicable to anti-blood coagulation and anti-corrosion surface modification in the fields of medical instruments and the like.

The invention discloses a process for preparing flame-retardant polyethylene plastic by recycling waste polyethylene plastic, and relates to the technical field of high polymer materials. When the flame-retardant polyethylene plastic is prepared, the waste polyethylene is extruded and granulated to prepare the polyethylene master batch; carrying out catalytic pyrolysis on the polyethylene master batch, and then reacting with potassium permanganate to prepare a hydroxylated carbon nanotube; the preparation method comprises the following steps: reacting a hydroxylated carbon nanotube with 1-(chloro-methylphosphoryl) ethylene, and then reacting with (mercaptomethyl) triethoxysilane to prepare a modified carbon nanotube; the preparation method comprises the following steps: carrying out irradiation grafting on a polyethylene master batch, 2-hydroxy-4-propenyl benzophenone and N, N-diethyl allylamine, and then reacting with chloromethyl triethoxy silane to prepare modified polyethylene; and carrying out melt extrusion on the modified carbon nanotubes and the modified polyethylene, carrying out injection molding, and carrying out water treatment to obtain the flame-retardant polyethylene plastic. The flame-retardant polyethylene plastic prepared by the invention has good flame retardant property, antibacterial property, tensile strength and anti-aging property.

The invention relates to the technical field of transfer films, in particular to a graphene-containing far-infrared warm-keeping polyurethane transfer film and a preparation method thereof. The far-infrared warm-keeping polyurethane transfer film containing graphene comprises a three-layer structure including a supporting layer, a polyurethane transfer layer and a bonding layer, the polyurethane transfer layer is located on one side of the supporting layer, and the bonding layer is located on the other side of the polyurethane transfer layer; the polyurethane transfer layer is prepared from polyurethane resin, an organic solvent, an organic pigment and a composite modifier, the composite modifier is prepared from alkenyl modified graphene oxide, chloropropenyl modified hindered phenol and 4-allyloxy-2-hydroxybenzophenone, and the composite modifier is added, so that the polyurethane transfer layer is formed. The polyurethane transfer film has far infrared thermal insulation performance and good oxidation resistance and hydrolysis resistance.

The invention relates to the technical field of TPO waterproof coiled materials, and discloses modified titanium dioxide and a preparation method thereof, a composition for a thermoplastic polyolefin waterproof coiled material, the thermoplastic polyolefin waterproof coiled material and a preparation method of the thermoplastic polyolefin waterproof coiled material. The method for preparing the modified titanium dioxide comprises the following steps: in the presence of a solvent, carrying out first heating treatment on titanium dioxide and lignosulfonic acid to obtain an intermediate I; in the presence of an organic solvent, carrying out second heating treatment on the intermediate I and the component I to obtain modified titanium dioxide; the component I is selected from at least one of 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-n-octyl benzophenone and 2, 2-dihydroxy-4-methoxybenzophenone, and the component II is selected from at least one of 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-n-octyl benzophenone and 2, 2-dihydroxy-4-methoxybenzophenone. The modified titanium dioxide prepared by the method can be applied to the field of TPO waterproof coiled materials. The TPO waterproof coiled material prepared by adopting the composition for the TPO waterproof coiled material disclosed by the invention has excellent anti-aging performance.

The invention belongs to the technical field of anti-aging agents, and particularly relates to a bio-based anti-aging agent and a preparation method thereof. The bio-based anti-aging agent comprises modified lignin nanospheres, a natural anti-oxidation synergist, a nano inorganic filler, a surfactant and an anti-migration agent, the modified lignin nanospheres are obtained by carrying out demethoxylation activation on lignin and then carrying out grafting modification on the lignin and chlorobenzophenone. Compared with rubber prepared from aniline anti-aging agents, the prepared bio-based anti-aging agent is excellent in mechanical property, higher in ultraviolet aging resistance and high in elongation at break retention rate.

The invention relates to the technical field of high polymer materials, and discloses a low-VOC (volatile organic compound) polypropylene composite material and a preparation process thereof, the low-VOC polypropylene composite material comprises the following raw materials: polypropylene, maleic anhydride grafted polypropylene, fluorenyl silicone oil, benzophenone coated talcum powder, activated carbon, an antioxidant, a plasticizer and a lubricant; the interface bonding force between a siloxane long-chain flexible structure and a polypropylene matrix material is improved by preparing fluorenyl silicone oil, the thermal stability of the composite material is effectively improved by combining fluorene rings, thermal decomposition products are reduced, VOC components are physically adsorbed and captured through a multilevel porous structure of activated carbon, VOC volatilization can be effectively reduced, and the environmental protection capacity of the composite material can be enhanced. Meanwhile, benzophenone-coated talcum powder is added into the polypropylene composite material matrix, so that the wear resistance and ultraviolet resistance of the polypropylene composite material matrix are enhanced, and the service life of the polypropylene composite material is effectively prolonged.

The invention discloses a high-performance PEEK composite material and application thereof in a robot skeleton, and belongs to the technical field of special engineering plastics, the PEEK composite material comprises the following components by weight: 50-80 parts of PEEK, 10-20 parts of an elastomer, 15-30 parts of carbon fiber, and 5-10 parts of a compatilizer, monomers 1-4 are copolymerized to obtain a hyperbranched polyaryletherketone copolymer, the hyperbranched polyaryletherketone copolymer is terminated by polysiloxane and modified by maleic anhydride, the monomer 1 is 4, 4 ', 4'-trihydroxy-3, 3 ', 3'-trimethoxytriphenylmethane, the monomer 2 is isopropyl hydroquinone, the monomer 3 is hydroquinone, and the monomer 4 is 4, 4 '-difluorobenzophenone. According to the high-performance PEEK composite material and the application of the high-performance PEEK composite material in the robot skeleton, the self-made compatilizer is added, so that the PEEK and carbon fiber composite material has the characteristics of high strength, good interfacial compatibility, good bending fatigue performance and the like.

A sunscreen composition includes a solvent and a sunscreen filter dissolved in the solvent. The solvent may include an ester. The ester may include an ester of salicylic acid, an ester of adipic acid, an ester of maleic acid, an ester of neopentanoic acid, an ester of C8-C18 fatty acids, or combinations thereof. The sunscreen filter may include a crystalline ultraviolet A (UVA) filter and / or a crystalline UVB filter. The sunscreen filter may include butyl methoxydibenzoylmethane, diethylhexyl butamido triazone, diethylamino hydroxybenzoyl hexyl benzoate, bis-ethylhexyloxyphenol methoxyphenyl triazine, ethylhexyl triazone, or combinations thereof. The sunscreen composition may exclude ethylhexyl benzoate, phenethyl benzoate, C12-C15 alkyl benzoate, or combinations thereof. The sunscreen composition may exclude benzophenone-3, octyl methoxycinnamate, 2-ethylhexyl-2-cyano-3,3-diphenylacrylate, 3,3,5-trimethylcyclohexyl salicylate, 2-ethylhexyl salicylate, or combinations thereof.

The invention discloses modified silicon dioxide microspheres for high performance liquid chromatography and a preparation method of the modified silicon dioxide microspheres, and relates to the technical field of chromatographic packing. When the modified silicon dioxide microspheres for the high performance liquid chromatography are prepared, firstly, (perfluorohexyl) benzene reacts with isophthaloyl dichloride to prepare a perfluorohexyl benzophenone compound; the preparation method comprises the following steps: reacting a perfluorohexyl benzophenone compound with hydrazine hydrate to prepare a perfluorohexyl hydrazone compound; carrying out catalytic decomposition on the perfluorohexyl hydrazone compound to prepare a hydrophobic modified diazo compound; preparing monodispersed non-porous silicon dioxide microspheres by using a sol-gel method; modifying the non-porous silicon dioxide microspheres by an etching template method to prepare mesoporous core-shell silicon dioxide microspheres; and reacting the mesoporous core-shell silicon dioxide microspheres with a hydrophobic modified diazo compound to prepare the modified silicon dioxide microspheres for high performance liquid chromatography. The prepared modified silicon dioxide microspheres for high performance liquid chromatography have the advantages of monodisperse particle size, large specific surface area, small back pressure and high column efficiency.

The invention relates to the technical field of high-performance polymer synthesis, in particular to a preparation method of polyaryletherketone, which comprises the following steps: S1, under the condition of inert gas, adding dihalogenated benzophenone and bisphenol fluorene into a solvent, uniformly mixing, adding alkali carbonate, and reacting under the condition of heating to obtain an oligomer; s2, adding aromatic diphenol into the system in the step S1 in batches, and carrying out temperature programming reaction to obtain a block copolymer; and S3, adding an end-capping reagent into the system to carry out end-capping reaction, and after the reaction is finished, carrying out post-treatment to obtain the polyaryletherketone. According to the preparation method of the polyaryletherketone, a feeding mode of gradient segmented feeding is adopted, a polymerization process of low-temperature pre-polycondensation and high-temperature chain extension copolymerization is developed, the reaction rate is controllable, sequence distribution is uniform, and product performance is stable. In addition, the preparation method can effectively reduce energy consumption and is more beneficial to industrial production.

The invention belongs to the technical field of polymer chemical production, and discloses a method for continuously and efficiently preparing polyether-ether-ketone. The method comprises the following steps: dissolving 4, 4 '-difluorobenzophenone and diphenyl sulfone in a first dissolving tank to obtain a 4, 4'-difluorobenzophenone solution; hydroquinone, a catalyst and diphenyl sulfone are placed in a second dissolving tank to be dissolved, and a hydroquinone solution is obtained; the preparation method comprises the following steps: injecting a 4, 4 '-difluorobenzophenone solution and a hydroquinone solution into a reactor for polymerization reaction to obtain a mixed solution; injecting the mixed solution into a separator through a heat exchanger for separation to obtain polyether-ether-ketone and liquid; distilling the liquid to obtain diphenyl sulfone and sodium fluoride, and returning the obtained diphenyl sulfone to participate in dissolution; all the steps are carried out in a protective atmosphere. The preparation process provided by the invention is a brand new PEEK production process flow, and realizes continuous PEEK production and efficient energy recycling.

The invention relates to the technical field of water treatment, in particular to a method for preparing a quaternized modified tannin-based organic flocculant through irradiation grafting, a product prepared through the method and application of the quaternized modified tannin-based organic flocculant. The method comprises the following steps: (1) under the irradiation of 30-60 mW / cm < 2 > of ultraviolet light, adding brominated vinyl triphenylphosphine into a mixture of tannic acid and a photoinitiator for reaction; (2) adjusting the ultraviolet intensity to 5-20 mW / cm < 2 > for reaction; (3) closing the ultraviolet reaction; and (4) precipitating the product with ethanol, filtering and washing to obtain the quaternary phosphonium modified tannin-based organic flocculant. Wherein the photoinitiator is selected from one of benzophenone and benzoin dimethyl ether. The quaternized modified tannin-based organic flocculant provided by the invention can efficiently remove algae in a water body in an environment-friendly manner, and avoids secondary pollution caused by algae cell rupture at the same time.

The invention relates to the technical field of composite materials, in particular to a polyaryletherketone-based shape memory composite material and a preparation method thereof. Comprising a terpolymer, shape memory polyurethane, a first heat-conducting filler and a second heat-conducting filler, 4, 4 '-difluorobenzophenone and hydroquinone are firstly pre-polymerized to obtain a PEEK prepolymer, the PEEK prepolymer is terminated by a hydroxyl olefine acid ester monomer to obtain a terminated copolymer, and then an acrylate monomer and the terminated copolymer are subjected to double-bond addition to obtain the terpolymer; the first heat-conducting filler is a one-dimensional nano heat-conducting filler; the second heat-conducting filler is a zero-dimensional and / or two-dimensional heat-conducting substance; the prepared composite material has the shape fixing rate of 85% or above and the shape recovery rate of 87% or above, the recovery time is shorter than 25 seconds, and the good shape memory performance is achieved.

The invention relates to polyether-ether-ketone resin with extremely narrow molecular weight distribution as well as a preparation method and application of the polyether-ether-ketone resin. The preparation method of the polyether-ether-ketone resin comprises the following steps: uniformly mixing 4, 4 '-difluorobenzophenone, a phenolic monomer, a salt-forming agent and a solvent in an inert atmosphere, carrying out gradient heating, and then carrying out end capping; the gradient heating comprises the following steps: in the initial stage, the heat preservation temperature is 140-210 DEG C, in the transition stage, the heat preservation temperature is 250-280 DEG C, and in the final stage, the heat preservation temperature is 300-320 DEG C. The prepared PEEK resin has very narrow molecular weight distribution, the chemical, heat-resistant stability, anti-fatigue performance and mechanical performance of the PEEK resin can be remarkably improved, and the high-performance and high-quality requirements of PEEK in the high-end manufacturing field such as aerospace, medical treatment, electronics and semiconductors are met.

The invention relates to the technical field of electronic equipment protection accessories, and discloses a wear-resistant flexible mobile phone shell and a preparation method thereof, and the wear-resistant flexible mobile phone shell comprises the following components by mass: 65-75 parts of thermoplastic polyurethane; 8 to 12 parts of graphene oxide; 10 to 15 parts of a dynamic cross-linking agent; 0.3 to 0.5 part of an antioxidant; 2-5 parts of anti-skid particles; the dynamic cross-linking agent is dithiobenzophenone, and forms a dynamic cross-linked network through fracture and recombination under a high-temperature condition; the sheet diameter of the graphene oxide is 0.5 to 5 [mu] m. The reversible dynamic cross-linking network is constructed by adopting the disulfide bond-based dynamic cross-linking agent, so that the flexibility and the self-repairing performance of the mobile phone shell are remarkably improved. Through dynamic recombination of a molecular level, the repair rate of scratches is successfully achieved by 90% or above, and the problems that an existing mobile phone shell is difficult to self-repair and the surface is prone to damage in the using process are effectively solved.

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 provides a method for preparing sulfonated polyetheretherketone, and belongs to the technical field of polycondensates of ketone and phenol. The preparation method comprises the following steps: preparing modified polyether-ether-ketone, pretreating, sulfonating and post-treating. The method for preparing the modified polyether-ether-ketone comprises the following steps: under the protection of nitrogen, adding 4, 4 '-difluorobenzophenone, hydroquinone and diphenyl sulfone into a reaction kettle, heating to 170-190 DEG C, adding a catalyst, keeping the temperature for 0.8-1.2 hours, dropwise adding a PEG-400 solution at 260-290 DEG C, controlling the dropwise adding time to be 1.5-2.5 hours, reacting at 310-330 DEG C for 1.5-3.5 hours after dropwise adding is finished, cooling and crystallizing after the reaction is finished, and washing off a solvent and inorganic salt to obtain the modified polyether-ether-ketone. Modified polyether-ether-ketone is obtained; according to the sulfonated polyether-ether-ketone disclosed by the invention, the sulfonation degree is 69.6 to 75.1 percent, the sulfonation uniformity is good, and the deviation is 2.37 to 2.52 percent.

The invention relates to the technical field of nano-composite water-based resin system design and function coordinated regulation and control, in particular to environment-friendly high-gloss wear-resistant water-based epoxy floor paint and a preparation method thereof. The environment-friendly high-gloss wear-resistant water-based epoxy floor paint is prepared from self-emulsifying water-based epoxy resin emulsion, a modified water-based epoxy curing agent containing biguanidyl and the like; the preparation method comprises the following steps: carrying out synergistic modification on a three-dimensional composite wear-resistant filler containing nano silicon dioxide-carbon nanotube-graphene through a silane coupling agent and dopamine; the light response type composite light stabilizer is compounded by a titanium dioxide grafted hindered amine light stabilizer and a benzophenone light stabilizer; a phase change temperature adjusting microcapsule and a nano-silver-chitosan antibacterial agent can also be added, so that multiple functions are realized. According to the floor paint disclosed by the invention, through an innovative formula and process, wear resistance, luster and weather resistance are remarkably improved, and toughness and crack resistance are enhanced; and the preparation method is environment-friendly and efficient, meets the requirements of multiple scenes, and has high economic value.

The embodiment of the invention provides a compound, an adhesive, a laminated structure, a display module and electronic equipment, and relates to the field of materials. The hydrogen abstracting type free radical photoinitiator in the adhesive comprises a substituted benzophenone structure. The substituted benzophenone structure is not activated under ultraviolet irradiation of sunlight, and the adhesive has certain bonding force. Under the ultraviolet irradiation of a non-sunlight condition, the substituted benzophenone structure is activated, and the flexible optical cement in the adhesive can be initiated to crosslink, so that the adhesive strength of the adhesive is reduced, and the application flexibility of the adhesive is improved.

The invention relates to the technical field of chinlon spinning, and particularly discloses a high-wear-resistance chinlon industrial yarn for a marine cable and a preparation method of the high-wear-resistance chinlon industrial yarn. The invention relates to a high-wear-resistance chinlon industrial yarn for a marine cable. The raw materials of the high-wear-resistance chinlon industrial yarn comprise 85-95 parts of modified chinlon 6 slices; 3 to 10 parts of nano ceramic particles; 3-5 parts of polytetrafluoroethylene; 3-5 parts of molybdenum disulfide nanosheets; 10 to 15 parts of a hyperbranched polyurethane microcapsule; 1-3 parts of a dispersant; 1-3 parts of a compatilizer; the modified chinlon 6 slice is obtained by performing swelling treatment on a chinlon 6 slice in a solution containing a maleic anhydride grafted ethylene-octylene copolymer and then drying; the wall material of the hyperbranched polyurethane microcapsule is a hyperbranched polyurethane prepolymer, and the core material of the hyperbranched polyurethane microcapsule comprises a fluorine-containing acrylate monomer and benzophenone. The nylon industrial yarn provided by the invention has excellent wear resistance and mechanical properties, and can meet the performance requirements of marine cables.

The invention discloses a preparation process of polyether-ether-ketone, and relates to the technical field of preparation of inorganic compounds. The preparation process comprises the following steps: reacting 4, 4 '-difluorobenzophenone, sodium carbonate and hydroquinone to generate polyether-ether-ketone, taking a polyaryletherketone block oligomer as an end-capping reagent, reacting 4, 4'-difluorobenzophenone with 4, 4 '-dimercaptodiphenyl sulfone, and then reacting with pentaerythritol phosphate to obtain the polyaryletherketone block oligomer. The thioester bond reversibly breaks at the polymerization temperature, exposed active sulfenyl reacts with hydroxyl at the tail end of the polyether-ether-ketone to form a more stable covalent bond, volatilization of the end-capping reagent is avoided, meanwhile, the initial decomposition temperature of the end-capped polyether-ether-ketone is increased, and the stability of the end-capping reagent is improved. The polyether-ether-ketone generated in the polyether-ether-ketone resin product is subjected to treatment procedures of crushing, organic solvent extraction, water washing, filtering, drying and the like, so that the product polyether-ether-ketone is obtained, less three wastes are generated, the solvent can be recycled, the atom economy is relatively high, and the preparation process of comprehensive utilization of resources is realized.

The invention belongs to the technical field of organic synthesis, and particularly relates to a preparation method of octocrylene serving as a main component of a sun-screening agent. The invention provides a preparation method of octocrylene serving as a main component of a sun-screening agent, which comprises the following steps: dissolving benzophenone in a polar aprotic solvent, adding zinc powder, heating to 50-70 DEG C under an inert condition, and dropwise adding 2-bromo-2-ethyl cyanoacetate for reaction to obtain a solution containing an intermediate etocrylene; under an ice bath condition, acidifying the solution containing the intermediate etocrilene by using a protonic acid aqueous solution, adding isooctanol, and slowly heating to 15-30 DEG C for reaction; and after the reaction is finished, extracting, washing, drying, filtering and concentrating the reaction liquid to obtain the octocrylene. According to the preparation method, reaction steps are reduced, the preparation process is simple, the operation method is convenient and fast, high-purity octocrylene can be obtained without purifying an intermediate, and large-scale industrial production is facilitated.

The application belongs to the technical field of cable materials, and discloses a cold-resistant and anti-cracking type special cable made of silicone rubber, which comprises a conductor cable core, an inner protective sleeve and an outer protective sleeve from inside to outside, wherein the raw materials of the outer protective sleeve comprise end-vinyl diphenyl siloxane, methyl vinyl siloxane, silane modified nano silicon dioxide, polyborosiloxane, an inhibitor, hydroxyl silicone oil, modified anti-ultraviolet polyurethane, a platinum catalyst and tetra(dimethylsiloxane) silane; diphenyl siloxane with a diphenyl side chain is selected as a main chain, and the modified anti-ultraviolet polyurethane is grafted to effectively destroy the structural regularity, inhibit low-temperature crystallization and prevent cable cracking; 4,4'-diamino benzophenone with anti-ultraviolet function is used as a chain extender and benzotriazole is used as an end-capping agent to be grafted into the polyurethane chain, so that the anti-ultraviolet capacity can be improved and migration can be avoided.

The invention relates to the field of sheath materials, and discloses an anti-aging sheath material for an electronic wire and a preparation method thereof, the sheath material comprises low density polyethylene, an ethylene-vinyl acetate copolymer, an ethylene-octene copolymer, ethylene propylene diene monomer, a triazine ring derivative, ammonium polyphosphate, modified nano silicon dioxide and an auxiliary agent; according to the triazine ring derivative, N-butyl-2, 2, 6, 6-tetramethyl-4-piperidylamine reacts with cyanuric chloride to prepare a triazine ring monosubstituent, hydrazine hydrochloride is used as a bridging agent to react with the triazine ring monosubstituent, and the triazine ring derivative and piperazine are polymerized to prepare the triazine ring derivative. The modified nano silicon dioxide is prepared by enabling 3-(3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl chloride and 4-propenyloxy-2-hydroxybenzophenone to react, and carrying out free radical polymerization on the reaction product on the surface of the nano silicon dioxide. The synergistic effect of mechanical property, thermo-oxidative aging resistance, ultraviolet aging resistance and flame retardant property is realized.

The invention discloses elastic fiber reinforced hydrophobic eutectic composite gel as well as a preparation method and application thereof, and belongs to the technical field of high polymer materials. The method for preparing the elastic fiber reinforced hydrophobic eutecticevaporate composite gel comprises the following steps: (1) carrying out heat treatment on an elastic fiber membrane at 100-150 DEG C for 20-200 minutes, soaking the elastic fiber membrane in an ethanol solution of benzophenone, taking out the elastic fiber membrane, and drying the elastic fiber membrane to obtain the treated elastic fiber membrane; (2) uniformly mixing a polymeric monomer, a cross-linking agent, a photoinitiator and a hydrophobic eutectic solvent to obtain a hydrophobic eutectic composite gel precursor solution; and (3) putting the treated elastic fiber membrane into the precursor solution of the hydrophobic eutectic composite gel, defoaming, and carrying out photo-initiation polymerization to obtain the elastic fiber reinforced hydrophobic eutectic composite gel. According to the prepared composite gel, the mechanical strength and fatigue resistance are effectively improved through the elastic fibers, and the composite gel has good adhesiveness.

The invention provides a block copolymer toughening-based polyether-ether-ketone material and a preparation method thereof, and relates to the technical field of high polymer materials, the method is characterized in that a block copolymer PAEK-B with a specific sequence structure is synthesized by accurately controlling a ternary block copolymerization reaction of hydroquinone, 4, 4 '-difluorobenzophenone and biphenol, and the block copolymer PAEK-B with a specific sequence structure is obtained. And then the mixture is subjected to melt blending with PEEK, so that the toughness of the PEEK is effectively improved, the mechanical property is improved, and meanwhile, the original processing temperature is kept unchanged.

The invention discloses a preparation method of an antibacterial warm-keeping fabric, and relates to the technical field of textiles. When the antibacterial warm-keeping fabric is prepared, firstly, (E)-butyl-2-ene-1, 4-diamine, glyoxal, formaldehyde and butyric acid are used as raw materials to synthesize a polyimidazolium salt antibacterial agent, then the polyimidazolium salt antibacterial agent is copolymerized with polytetrahydrofuran ether glycol and diphenylmethane diisocyanate to prepare an antibacterial polyurethane spinning solution, and the antibacterial fabric is obtained through wet spinning and weaving. The preparation method comprises the following steps: reacting L-cysteine with 3-amino propyl triethoxy silane to prepare cysteamine acyl propyl triethoxy silane, reacting with formaldehyde and phosphorous acid to obtain flame-retardant modified silane, and further preparing a silicon dioxide solution from the flame-retardant modified silane and sol-gel such as methyltrimethoxysilane; finally, the antibacterial fabric is treated with a benzophenone solution and then soaked with a silicon dioxide solution, and the antibacterial thermal fabric is prepared through ultraviolet irradiation, standing gelation, aging and hexane washing. The prepared fabric has excellent antibacterial property, heat retention property and flame retardant property.