71 results about "Propyl isocyanide" patented technology

The invention relates to the technical field of silicone rubber, and discloses a preparation method of a modified silicone rubber elastomer, the modified silicone rubber elastomer comprises 100 parts by weight of methyl vinyl silicone rubber, 5-25 parts by weight of organosilicon grafted cellulose microcrystalline, 12-20 parts by weight of white carbon black, 1.7-2.4 parts by weight of a vulcanizing agent, 2.6-4.2 parts by weight of a cross-linking agent, and 1.5-2 parts by weight of an auxiliary agent, 1.2 to 1.6 parts by weight of an anti-aging agent; the organic silicon grafted cellulose microcrystal contains a siloxane structure and has good compatibility with the methyl vinyl silicone rubber, and in the high-temperature vulcanization process, alkenyl of the organic silicon grafted cellulose microcrystal can be subjected to a cross-linking reaction with the methyl vinyl silicone rubber and triallyl isocyanurate, so that the organic silicon grafted cellulose microcrystal can be used for curing the methyl vinyl silicone rubber and the triallyl isocyanurate. The interface bonding strength between the cellulose microcrystal and the methyl vinyl silicone rubber is enhanced, so that the silicone rubber elastomer shows higher tensile property, hardness and tearing strength.

The invention discloses a sealing gasket for an energy storage hydrogen production electrolytic cell and a preparation method of the sealing gasket, and belongs to the technical field of sealing gasket production. Comprising the following steps: carrying out surface treatment on glass fibers, and carrying out hot-pressing mixing with a polyimide block copolymer to obtain a supporting layer; glass fibers are subjected to surface treatment and then hot-pressed and mixed with the polyimide block copolymer to obtain a supporting layer; the polytetrafluoroethylene, the triallyl isocyanurate and the nano silicon dioxide are mixed and stirred, and the sealing layer is obtained through injection molding after radiation crosslinking; the epoxy resin matrix, the modified fluororubber and the anti-aging agent are subjected to banburying and vulcanization to obtain the protective layer; and the supporting layer, the sealing layer and the protective layer are sequentially stacked, hot-pressed and compounded to obtain the sealing gasket. The sealing gasket for the energy storage and hydrogen production electrolytic cell is improved in structural stability and has good creep resistance and chemical resistance.

The invention discloses a puncture-resistant biodegradable film bag and a preparation method thereof. The puncture-resistant biodegradable film bag is prepared from the following raw materials in parts by weight: 50-80 parts of biodegradable polyester, 1-20 parts of a modifier and 10-35 parts of an inorganic filler, wherein the total part number of the three raw materials is 100; the composition further comprises 0.1-5 parts of a cross-linking agent, 0.1-5 parts of an antioxidant and 0.1-1 part of a dispersing agent; the weight-average molecular weight of the puncture-resistant biodegradable material is 100,000-300,000; and the cross-linking agent is at least one of triallyl isocyanurate, trimethylallyl isocyanate, trimethylolpropane triacrylate, trimethylolpropane trimethacrylate and triglycidyl tripolyisocyanate. The modifier, the cross-linking agent and the biodegradable polyester have a synergistic effect, and through an electron beam irradiation process, not only can the puncture strength of the film bag be greatly improved, but also the MD tensile strength and the TD tensile strength are also greatly improved.

The invention discloses high-insulativity modified carbon black and a preparation method thereof, and belongs to the technical field of carbon black modification. The preparation method comprises the following steps: firstly, pretreating the surface of the carbon black by using organic acid to improve active oxygen groups on the surface of the carbon black, and then treating the carbon black by using a silane coupling agent containing an isocyanurate structure. The silane coupling agent forms a physical barrier to hinder direct contact of carbon black particles, and the isocyanurate is stable in structure, uniform and compact in electron cloud distribution and capable of limiting a charge conduction path and remarkably improving the insulativity of the carbon black. In addition, gem-diborate is introduced to an allyl side group of diallyl isocyanurate, so that the arrangement among molecules is tighter and more ordered, electron migration channels are reduced, and the insulating property is enhanced. Meanwhile, gem-borate has high activity and polarity, is beneficial to dispersion of the modified carbon black in the resin, and is firmly combined on the resin through a plurality of action modes, so that the dispersity and stability of the modified carbon black in the resin are improved.

The embodiment of the invention discloses a degradable filling plastic master batch and a preparation method thereof. The degradable filling plastic master batch comprises the following components: a bio-based material, an accelerant, a lubricant, a modifier, an antioxidant, a cross-linking agent and a coupling agent, wherein the bio-based material is polylactic acid; the accelerant is modified starch; the plastic modified material is calcium carbonate; the modifying agent comprises pe wax and / or ebs; the lubricant comprises zinc stearate and POE (Polyolefin Elastomer); the antioxidant is a composition of lignin and phosphite ester; the cross-linking agent is triallyl isocyanate, and / or epoxidized soybean oil; the coupling agent is a silane coupling agent or an aluminic acid coupling agent, can provide the strength of the degradable filling master batch, is not prone to deformation during stretching, has an anti-oxidation effect, is more reinforced and durable, and can achieve the purpose of rapid degradation after waste treatment.

The present invention relates to a method for preparing a high-specific-capacity biomass hard carbon material, comprising the following steps: (S1) pretreatment: the biomass raw material is crushed and washed to obtain a pretreated material; (S2) graft modification: triallyl isocyanurate, thienyl acrylic acid, a photoinitiator, and an inhibitor are dissolved in alcohol to obtain a modified solution; the pretreated material is added to the modified solution for immersion and then subjected to graft polymerization reaction under ultraviolet light to obtain a modified biomass; (S3) hydrothermal precarbonization: the modified biomass is added to a mixed aqueous solution of phosphoric acid and zinc chloride for heating reaction to obtain a hard carbon precursor; (S4) pyrolysis carbonization: the hard carbon precursor is mixed with an inorganic salt and carbonized under an inert atmosphere, and then purified and ground to obtain a high-specific-capacity biomass hard carbon material. The hard carbon material finally obtained by the present invention is used as a negative electrode material in a sodium ion battery, and has excellent comprehensive electrochemical properties, especially a significant improvement in specific capacity at high rates.

The invention relates to the technical field of soil improvement, in particular to a biochar composite modifier for improving a soil structure and a preparation method of the biochar composite modifier. The biochar composite modifier for improving the soil structure is obtained by sequentially wrapping and polymerizing a monomer A solution, a monomer B solution and a monomer C solution on the surface of biochar powder, the monomer A solution is prepared from acrylamide, triallyl isocyanurate, acrylic acid, sodium hydroxide and deionized water; the monomer B solution is prepared from acrylamide, N, N '-methylene bisacrylamide, acrylic acid, sodium hydroxide and deionized water; the monomer C solution is prepared from acrylamide, methacryloyloxyethyl trimethyl ammonium chloride and deionized water; the biochar composite modifier for improving the soil structure solves the problems that sandy soil is loose and poor in water holding capacity.

The invention discloses a high-stability gel polymer electrolyte as well as a preparation method and application thereof, and relates to the technical field of metal batteries. The preparation method comprises the following steps: mixing a metal salt and a solvent to obtain a basic electrolyte; adding butyl acrylate, triallyl isocyanurate, a plasticizer and an initiator into the basic electrolyte to obtain a precursor solution; and carrying out polymerization reaction on the precursor solution to obtain the high-stability gel polymer electrolyte. The prepared gel polymer electrolyte has the characteristics of high ionic conductivity and high strength, and can be applied to a lithium metal battery and a sodium metal battery. The NVP gel polymer electrolyte Na metal battery assembled by adopting a polyanion positive electrode sodium vanadium phosphate (NVP), a sodium metal negative electrode and the gel polymer electrolyte disclosed by the invention can realize long cycle stability under high magnification.

This invention relates to the field of polymer materials technology, specifically disclosing a flame-retardant thermoplastic elastomer compound and its preparation method. The flame-retardant thermoplastic elastomer compound comprises 50-80 parts SEBS, 10-30 parts PP, 5-15 parts compatibilizer, 10-30 parts composite flame retardant, 3-10 parts plasticizer, 0.2-1 parts antioxidant, and 0.1-0.5 parts lubricant. The composite flame retardant is prepared by reacting and mixing an intumescent flame retardant, barium metaphosphate, boron nitride, triallyl isocyanurate, and SEBS. The flame-retardant thermoplastic elastomer compound of this application possesses good flame retardancy, mechanical properties, and water resistance stability.

The application relates to the technical field of polypropylene electrical film, in particular to a high-performance polypropylene electrical film with electric breakdown resistance and a preparation method thereof. The application provides a preparation method of the high-performance polypropylene electrical film, wherein polypropylene powder, styrene, a crosslinking aid and a compatilizer are mixed, melt-extruded and granulated, and then subjected to heat pressing, cold pressing, bidirectional stretching, cooling and shaping, edge cutting and corona treatment to obtain the polypropylene electrical film; the crosslinking aid is prepared from maleic anhydride, 2,4,6-triaminotoluene and allyl isocyanate; and the compatilizer is obtained by reacting maleic anhydride and polypropylene. The polypropylene electrical film prepared by the application has good performance and combustion performance, high mechanical strength and strong electric breakdown resistance at high temperatures.

The application relates to the cable field and discloses a novel high-heat-dissipation energy storage device cable and a preparation method thereof. The novel high-heat-dissipation energy storage device cable comprises, from inside to outside, a core, a cross-linked polyethylene insulation layer, a shielding layer, a filling layer, an inner protective layer, an armored layer and an outer protective layer. The filling layer is filled with a composite phase change material. The composite phase change material comprises binary eutectic material, cross-linked polyurethane, graphene powder and modified spherical alumina. The cross-linked polyurethane is prepared by using PEG6000, diphenyl methane diisocyanate and boric acid as raw materials. The modified spherical alumina is prepared by grafting a modified silane coupling agent on the surface of spherical alumina through a thiol-alkene click reaction between triallyl isocyanurate and 3-mercapto propyl triethoxysilane. The filling layer filled with the composite phase change material has the characteristics of good heat conductivity, high phase change latent heat, wide phase change temperature range, good thermal cycle stability and good flame retardance.

The invention relates to a preparation method of a high-strength anti-aging PVC-U drain pipe. The preparation method comprises the following steps: step 1, preparing a nanoscale polytetramethylene ether glycol emulsion; 2, preparing a composite emulsion; and step 3, mixing the composite emulsion, styrene, butadiene, isoprene, triallyl isocyanurate, secondary alcohol polyoxyethylene ether, 2-hydroxy-2-methyl phenyl propane-1-ketone, dibenzyl isopropyl phenyl phenol polyoxyethylene ether, sodium lauroyl methyl taurate and modified nano-scale silicon dioxide, and then carrying out a reaction under a sealing condition. After the reaction is completed, demulsifying, filtering, washing and drying to obtain composite particles; and 4, mixing and melting the composite particles and PVC particles, extruding through a twin-screw extruder matched with a mold, cooling, shaping and cutting to obtain the PVC-U drainage pipe. While the production is accelerated, the anti-aging performance under the irradiation of ultraviolet rays can also be improved, so that the material can be stably used for a long time under the irradiation of strong sunlight.

A resin composition includes a base resin and a hardened resin. The base resin includes a polyphenylene ether resin and an olefinic resin. A weight proportion of the base resin in the resin composition is between 10 wt % and 20 wt %. The hardened resin includes a cyclopentadiene-styrene copolymer resin, a triallyl isocyanurate, and a maleimide resin. A weight proportion of the hardened resin in the resin composition is between 10 wt % and 20 wt %.

The invention relates to the technical field of packaging films, and discloses an oil-resistant and solvent-resistant food packaging film and a preparation method. Under the initiation of dicumyl peroxide or dibenzoyl peroxide, triallyl isocyanurate is used as a crosslinking agent to cause polyethylene, triallyl isocyanurate, and allyl isocyanurate structure modified on the surface of graphene to undergo melt co-crosslinking to obtain a graphene crosslinked polyethylene food packaging film. Graphene nanoparticles form chemical crosslinks in the polyethylene matrix to improve the barrier properties of the polyethylene food packaging film. The swelling degree and solubility of polyethylene in organic solvents are reduced, and the oil and solvent resistance of the food packaging film is improved. Graphene nanoparticles are chemically bonded in the polyethylene matrix, which improves the dispersibility of graphene, so that graphene has a better reinforcing effect on polyethylene, and improves the mechanical properties of the food packaging film, such as tensile properties and elastic modulus.

The invention discloses a preparation method of 1, 3-diallyl-5-ethylene oxide methyl-[1, 3, 5] triazine-2, 4, 6-triketone, sodium isocyanurate, chloropropene and epoxy bromopropane are used as raw materials, and a product is synthesized through two-step reaction: S1, preparation of intermediates: the sodium isocyanurate and the chloropropene are subjected to a reaction in a polar aprotic organic solvent, the reaction is carried out for 2-4 hours, and the product is obtained; carrying out a first-step reaction under the action of a catalyst and a cocatalyst, filtering, evaporating the solvent to dryness, and purifying to obtain an intermediate diallyl isocyanurate; s2, preparation of a target product: in a polar aprotic organic solvent, carrying out a second-step reaction on the intermediate and epoxy bromopropane under the action of an acid capturing agent, carrying out rotary evaporation to remove the solvent, washing and drying, and purifying to obtain the target product, a plurality of aspects such as a catalyst and a reaction system are researched, the reaction temperature is reduced, and a product with the purity conforming to the application in the field of electronic chemistry is obtained.

The invention discloses an environment-friendly high-temperature-resistant PE bottle body and a preparation method thereof, and belongs to the technical field of packaging materials. The bottle body is of a three-layer co-extrusion structure, in the inner layer, high-density polyethylene serves as a base material, a graphene-nano-silicon dioxide core-shell filler and a dicumyl peroxide / triallyl isocyanurate cross-linking agent are added, and a high-temperature-resistant cross-linking layer is formed; the middle layer is a low-density polyethylene base material and is reinforced and toughened by silane-containing modified glass fibers; and the outer layer takes linear low-density polyethylene as a base material, is loaded with nano TiO and a starch-based biodegradable auxiliary agent, and is treated by trimethoxysilane to form a super-hydrophobic anti-aging layer. According to the preparation method, through microwave-assisted filler activation, ultrasonic online dispersion, gradient electron beam crosslinking and super-hydrophobic surface curing, the efficient dispersion of the filler and the synergistic effect of the functional layer are realized. And the prepared bottle body has excellent high temperature resistance, mechanical strength and environmental friendliness, and is suitable for high-temperature environment packaging application.

The invention relates to the technical field of acrylate pressure-sensitive adhesives, and discloses an irradiation cross-linked antibacterial pressure-sensitive adhesive and a preparation method and application thereof, the irradiation cross-linked antibacterial pressure-sensitive adhesive comprises the following raw material components by weight: 80-99.5% of an acrylate polymer, 0.5-20% of an antibacterial agent and 0.5-3% of a cross-linking sensitizer, monomers forming the acrylate polymer comprise a soft monomer, a functional monomer and a hard monomer, the soft monomer comprises (methyl) acrylate with an alkyl group with 2-18 carbon atoms, and the hard monomer comprises methyl (methyl) acrylate, ethyl methacrylate, isobornyl methacrylate and isobutyl methacrylate; the cross-linking sensitizer comprises a polyfunctional carbon-carbon unsaturated bond compound, and the polyfunctional carbon-carbon unsaturated bond compound comprises triallyl isocyanurate, trimethylallyl isocyanurate, triallyl cyanurate, trimethylallyl cyanurate and trimethylolpropane trimethacrylate. The cross-linking sensitizer comprises a polyfunctional carbon-carbon unsaturated bond compound, and the polyfunctional carbon-carbon unsaturated bond compound comprises triallyl isocyanurate, trimethylallyl isocyanurate, trimethylallyl cyanurate, trimethylallyl cyanurate, trimethylallyl cyanurate and trimethylolpropane trimethylacrylate.

The invention relates to the technical field of polyethylene films, and particularly discloses a polyethylene cover film for a plastic container and a preparation method of the polyethylene cover film. The polyethylene cover film for the plastic container is mainly prepared from the following raw materials in parts by weight: 45 to 55 parts of low-density polyethylene, 45 to 55 parts of linear low-density polyethylene, 25 to 35 parts of metallocene low-density polyethylene, 15 to 25 parts of propylene-ethylene copolymer, 8 to 12 parts of modified graphene oxide, 0.1 to 0.5 part of lubricant and 0.2 to 0.8 part of antioxidant, the modified graphene oxide is obtained by treating graphene oxide by adopting 3-methacryloxy propyl trimethoxy silane, maleic anhydride, 2-acrylamide-2-methylpropanesulfonic acid and triallyl isocyanurate. The invention further discloses a preparation method of the modified graphene oxide. The polyethylene cover film has the advantages of high tensile strength, good barrier property and high heat sealing strength, and meets market requirements.

The present application relates to the technical field of hose manufacturing, in particular to a PVC hose resistant to heat and high pressure and a preparation method thereof. The PVC resin powder is added as a plastic matrix; the plasticizer DOTP is added to plasticize and soften; the calcium carbonate is added to play a role of reinforcing filling; the carbon black is added to shield ultraviolet rays and dye; the calcium-zinc composite stabilizer is added to prevent the PVC from thermal decomposition; the chlorinated polyethylene is added to provide a rubber phase for the material and increase elasticity; the processing aid ACR resin is added to reduce processing temperature, promote plasticization and improve material toughness; the dicumyl peroxide is added to oxidize and break chains as an initiator; the trimethylolpropane trimethacrylate is added to promote vulcanization and crosslinking; and the triallyl isocyanurate is added to play a crosslinking role. The modified zirconium phosphate is further added, the modified zirconium phosphate loaded with iron ions is added to PVC powder, and the heat and high pressure resistance of the PVC hose is improved.

The invention discloses a high-Abbe number optical lens composition of a sulfur-containing resin monomer with a high refractive index, and relates to the technical field of lens compositions, and the high-Abbe number optical lens composition comprises the following raw materials: bis (2-isothiocyano ethyl) thioether, 1, 3, 5-tri (isocyanate methyl) cyclohexane, 4, 8-dimercaptomethyl-1, 11-dimercapto-3, 6, 9-trithioundecane, 1, 4-cyclohexane dimethyl mercaptan, perfluoro-1, 3, 4-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, 5-trimethyl-1, 3, the invention relates to a high-temperature-resistant flame-retardant plastic which is prepared from the following raw materials: 1, 4-cyclohexanedimethanol, modified tri (beta-epithiopropyl) isocyanurate, modified dicyclopentadiene diepoxy, N-(2-ethoxyl) piperidine, a bismuth-zinc complex catalyst, modified lauryl phosphate diethanolamine salt, dibenzothiophene sulfone and an antioxidant. According to the invention, the modified dicyclopentadiene diepoxy is added, so that the modified dicyclopentadiene diepoxy can be perfectly compatible with a polythionocarbamate matrix, the problem that common dicyclopentadiene diepoxy is easy to agglomerate and separate is avoided, and meanwhile, by introducing a rigid structure, the original hardness of the lens is greatly improved.

The invention relates to a preparation method of a durable flame-retardant smoke-suppressing cotton fabric based on a phosphorus / nitrogen / silicon flame retardant, which comprises the following steps: dissolving diethylenetriaminepenta (methylene phosphonic acid) and tris (2, 3-epoxypropyl) isocyanurate in a solvent to obtain a mixed solution, dropwise adding (3-glycidoxy) trimethoxysilane into the mixed solution at a rate of 0.5-1mL / min, reacting at a temperature of 60-80 DEG C for 1-2 hours, and then adding a catalyst to obtain the flame-retardant smoke-suppressing cotton fabric based on the phosphorus / nitrogen / silicon flame retardant. Reacting to obtain a phosphorus / nitrogen / silicon flame retardant solution; secondly, dicyandiamide is added into the phosphorus / nitrogen / silicon flame retardant solution, then ammonia water is added to adjust the pH to 6-8, and flame-retardant finishing liquid is obtained; and finally, immersing the cotton fabric into the flame-retardant finishing liquid, and preparing the durable flame-retardant smoke-suppressing cotton fabric based on the phosphorus / nitrogen / silicon flame retardant through a rolling and baking process. The product prepared by the method disclosed by the invention has excellent flame-retardant durability and smoke suppression performance.

The invention discloses a synthesis method of 1, 3, 5-tri (trialkoxysilylpropyl) isocyanurate, and the 1, 3, 5-tri (trialkoxysilylpropyl) isocyanurate is obtained by reacting gamma-chloropropyl trialkoxysilane with isocyanuric acid in the presence of an acid-binding agent. The method is simple in process, convenient to operate, mild in reaction and suitable for industrial production.

The utility model discloses a rectification device for producing triallyl isocyanurate, which belongs to the technical field of triallyl isocyanurate processing and comprises a heating platform and a rectification column. A plurality of heating pipes for heating the rectifying column are arranged in the heating platform, a groove for accommodating the rectifying column is formed in the surface of the heating platform, and the heating pipes are arranged along the edge of the groove; the rectifying column is located in the groove and is horizontally arranged, a plurality of rectifying outlets are formed in the rectifying column, and sealing blocks are arranged at the positions of the rectifying outlets and are used for sealing the rectifying outlets. According to the rectification device disclosed by the utility model, effective rectification treatment can be carried out on triallyl isocyanurate, the rectification column is horizontally arranged, the structural stability is stronger, the rectification column does not need to be fixed by adopting more fixing pieces, the component cost of the device is saved, and the rectification effect on the triallyl isocyanurate is ensured.

The present invention discloses a special cable for ocean-going ships and a preparation method thereof, which relates to the technical field of cables. In the present invention, a two-component silicone rubber and linear low-density polyethylene are used as the matrix, and pre-crosslinking is carried out through a crosslinking agent 1,4-bis(tert-butylperoxyisopropyl)benzene and a co-crosslinking agent triallyl isocyanurate, so as to achieve the effects of fire resistance and high temperature resistance. Then, short alumina fibers and phosphate glass are added. At high temperature, the molten phosphate presents a glassy phase, fills the pores generated by the thermal decomposition of the polymer, and connects with alumina, thereby generating an aluminum phosphate crystal phase to delay the decomposition of internal macromolecular substances. Finally, through radiation crosslinking, the polymer and the silicone rubber form a network structure to make up for the side effects caused by the addition of fillers, and the polar groups generated by radiation improve the interfacial properties between the matrix and the fillers. At the same time, the ring-opening reaction of triallyl isocyanurate occurs, thereby further enhancing the fire resistance and high temperature resistance of the matrix material.

The invention discloses a high performance liquid chromatograph for triallyl isocyanurate and a detection method thereof, and relates to the technical field of liquid chromatographs.The high performance liquid chromatograph comprises a machine body and a degassing monitoring assembly, a degassing chamber is formed in the upper portion of the machine body, an arc-shaped sliding groove is formed in the periphery of a containing groove, and the degassing monitoring assembly is slidably connected to the interior of the arc-shaped sliding groove; a telescopic corrugated pipe is connected to one side of the air passing sleeve, and an air inlet is formed in the front face of the vacuum pump. According to the high performance liquid chromatograph for triallyl isocyanurate and the detection method thereof, a vacuum pump is used for extracting air in a degassing bottle to eliminate bubbles, and gas to be discharged is filled into a telescopic corrugated pipe to enable the telescopic corrugated pipe to stretch so as to push a monitoring camera to do circular arc sliding along the interior of an arc-shaped sliding groove; the bubble elimination conditions in the degassing bottles at different positions are monitored in the degassing process, manual naked eye observation is not needed, the workload is reduced, and meanwhile the high-definition camera is used for shooting the bubble conditions, so that the monitoring result is more accurate.

The utility model discloses crystallization and purification equipment for producing triallyl isocyanurate, which belongs to the technical field of crystallization and purification treatment of triallyl isocyanurate and comprises an outer cylinder and a crystallization component positioned in the outer cylinder, a mounting bracket is arranged at the top of the outer cylinder, the top of the outer cylinder is sealed, and the outer cylinder is filled with treating fluid; the crystallization assembly comprises a driver, an inner cylinder located at the driving end of the driver and a filter bag located in the inner cylinder, the inner cylinder is located in the outer cylinder, filter holes are formed in the surface of the inner cylinder, a return pipe is arranged on the inner cylinder and communicated with the interior of the inner cylinder, and the filter bag is located in the outer cylinder. And the filter bag is open and is attached to the inner wall of the inner cylinder. According to the utility model, the triallyl isocyanurate is crystallized and purified in a centrifugal manner, so that the configuration of equipment is simplified, and the crystallization and purification treatment cost of the triallyl isocyanurate is effectively reduced.

The invention discloses a corrosion-resistant high-strength aerator diaphragm and a preparation method thereof, and belongs to the technical field of rubber materials. The corrosion-resistant high-strength aerator diaphragm is prepared from the following raw materials: a silane coupling agent, white carbon black, multiwalled carbon nanotubes, modified ethylene propylene diene monomer, fluororubber, a compatilizer, aramid fibers, dicumyl peroxide, triallyl isocyanurate, 4, 4 '-bis (alpha, alpha'-dimethylbenzyl) diphenylamine, silver-loaded zeolite, stearic acid, zinc oxide and azodicarbonamide. According to the EPDM / FKM blending system disclosed by the invention, a molecular-level interpenetrating network structure is formed through directional regulation and control of the compatilizer, so that the material can resist a corrosion environment; through a specific raw material ratio and a unique process flow, the corrosion-resistant aerator has enough strength while ensuring excellent corrosion resistance, so that the requirements of various complex application scenes are met, the overall performance of the aerator is improved, the service life of the aerator is prolonged, and the maintenance cost of equipment is reduced.

The invention relates to the technical field of compositions of high-molecular compounds, and particularly discloses a thermoplastic elastomer composition for thin-wall forming and a preparation method of the thermoplastic elastomer composition. The thermoplastic elastomer composition is mainly prepared from the following raw materials: SEBS elastomer, modified PP resin, POE resin, a scratch-resistant agent, a lubricant, an antistatic agent, an anti-aging compounding agent and a coloring agent, the modified PP resin is mainly prepared from the following raw materials: PP resin, organic peroxide, 4-hydroxybutyl acrylate glycidyl ether, diallyl isocyanurate, a lubricant and an antioxidant. The thermoplastic elastomer composition has the characteristics of good hardness, high tensile strength, large elongation at break, high tear strength and large melt flow rate, keeps good fluidity in a thin-wall forming process, is convenient for thin-wall forming, and meets market requirements.

The invention discloses a modified triallyl isocyanate cross-linking agent, and relates to the technical field of cross-linking agents. Amino generated by hydrolysis of an isocyanate group of (S)-2, 6-diisocyanatohexanoic acid reacts with an isocyanate group of triallyl isocyanurate to generate a urea bond, a formed carboxyl intermediate limits movement of a molecular chain due to increase of crosslinking density, and the urea bond generated by synergistic reaction improves the thermal stability of a subsequent crosslinking agent; the introduced carboxyl group can be subjected to ring opening reaction with an epoxy group of polypropylene glycol diglycidyl ether to form an ester bond and a hydroxyl group, so that crosslinking sites are further increased, meanwhile, a flexible polyether chain segment is introduced into a modified triallyl isocyanate crosslinking agent molecule, and the introduced flexible polyether chain segment can counteract rigidity caused by excessive crosslinking; the toughness of the cross-linked material is improved, so that brittle rupture of the material caused by over-dense cross-linking is avoided. The modified triallyl isocyanate cross-linking agent prepared by the preparation method disclosed by the invention has the effects of high cross-linking property and high stability.

The present invention discloses a rectification device for the production and preparation of isopropyl isocyanate, which relates to the technical field of rectification. The device includes a rectification column, a tower kettle, and a fixed ring seat. A liquid collection groove is formed on the fixed ring seat. An elastic membrane is coaxially and fixedly connected to the inner hole wall of the fixed ring seat. A plurality of sieve holes are formed on the surface of the elastic membrane. When the elastic membrane is not subjected to a longitudinal force, the upper surface of the elastic membrane is flush with the upper surface of the fixed ring seat. A top membrane assembly is used to make the elastic membrane receive an upward longitudinal force, so as to cause the elastic membrane to produce an upward bulging elastic extension deformation. In the present invention, when the gas volume in the rectification column is insufficient, the top membrane assembly will trigger an action and generate an upward longitudinal force on the elastic membrane, so that the elastic membrane bulges upward, and the liquid on the upper surface of the elastic membrane will flow along the upper surface of the elastic membrane into the liquid collection groove of the fixed ring seat for collection, preventing the liquid from flowing into the lower layer of the rectification column through the sieve holes on the elastic membrane, resulting in a decrease in the gas-liquid mixing mass transfer efficiency.