3337 results about "Polysiloxene" patented technology

The invention relates to the technical field of power transmission, in particular to a moisture-proof cable which sequentially comprises a conductive wire core, a gradient buffer layer, a dynamic sealing layer, a flexible supporting layer and a self-repairing sheath from inside to outside. A gradient buffer layer; the dynamic sealing layer is of a split type sealing structure formed by an outer ring surface sealing lip and an inner ring surface static sealing belt, the outer ring surface sealing lip is formed by embedding a polytetrafluoroethylene fiber reinforcing layer in a silicone rubber matrix, and the surface of the outer ring surface sealing lip is coated with a humidity response type graphene coating; the flexible supporting layer is formed by spirally winding a nickel-titanium alloy belt, and bionic fish scales are welded to the surface of the nickel-titanium alloy belt; the self-repairing sheath is characterized in that a hexagonal honeycomb structure is molded on the outer layer, hydroxyl-terminated polysiloxane and a platinum catalyst are contained in an A-type microcapsule, and modified epoxy resin is contained in a B-type microcapsule. The moisture-proof cable shows excellent corrosion resistance, moisture resistance and self-repairing capability in a humid environment, and can maintain good performance when subjected to external physical impact.

The invention discloses a preparation method of a B1-grade flame-retardant fire-resistant control cable, belongs to the technical field of flame-retardant fire-resistant cables, and aims to solve the technical problem that the mechanical strength and the fire-resistant and flame-retardant performance of an inorganic flame-retardant modified fire-resistant fire-resistant control cable in the prior art need to be further improved. The method comprises the following steps that a plurality of cable cores are arranged in parallel, gaps among the cable cores are filled with filling ropes to form filling layers, the cable cores filled with the filling layers are wrapped together through a wrapping tape, and a wrapping layer is formed outside the cable cores. According to the invention, maleic anhydride modified polyethylene is used as a phase solvent, and polyethylene is cross-linked and enhanced by modified graphite and modified polysiloxane, so that not only is the mechanical strength of the cable material effectively improved, but also the fire resistance and flame retardance of the cable material are improved.

The invention discloses a self-repairing polymer electrolyte, a preparation method and application thereof, and a polymer lithium battery, the self-repairing polymer electrolyte comprises the following preparation raw materials by mass: 50-100 parts of polysiloxane diacrylate, 1-10 parts of disulfide diacrylate, 10-40 parts of a cross-linking agent, 60-120 parts of a plasticizer, 60-120 parts of a lithium salt, and 1-10 parts of a photoinitiator. According to the self-repairing polymer electrolyte disclosed by the invention, a thiol-ene click reaction can be carried out between carbon-carbon double bonds in polysiloxane diacrylate and disulfide diacrylate and sulfydryl of the cross-linking agent, so that a dynamic disulfide bond and hydrogen bond network structure is endowed to the self-repairing polymer electrolyte; and the dynamic disulfide bond and the hydrogen bond can enable the electrolyte membrane to realize self-healing at room temperature without external stimulation.

The invention discloses an aerogel fire extinguishing agent for fire fighting, a fire extinguishing device and a releasing method.The aerogel fire extinguishing agent for fire fighting is prepared from, by mass, 8-12 parts of silicon dioxide aerogel powder, 40-45 parts of perfluorohexanone, 1.5-2 parts of zinc molybdate, 0.8-1.2 parts of nano cerium oxide, 2-3 parts of hyperbranched polysiloxane and 0.2-0.3 part of 18-crown-6 ether. Solid-phase silicon dioxide aerogel powder is matched with liquid-phase perfluorohexanone, zinc molybdate, nano cerium oxide, hyperbranched polysiloxane, 18-crown-6 ether and the like are compounded to serve as auxiliaries, efficient fire extinguishing can be conducted on precise electrical elements, residues are few, loss of instruments and equipment is small, and the fire extinguishing agent is suitable for being applied to the electrical field.

The invention discloses a glue solution for a copper-clad plate and a preparation method of the glue solution, and relates to the technical field of copper-clad plates. According to the prepared glue solution for the copper-clad plate, the composite epoxy resin, the curing agent, the accelerant, the solvent, the flexibilizer and the inorganic filler, the composite epoxy resin comprises bisphenol A epoxy resin, epoxy phenyl polysiloxane, itaconic acid polyaryletherketone and hydroxyl-terminated fluorine-containing vinyl polysiloxane, so that the interface bonding force with the copper plate is enhanced; the dielectric constant and the dielectric loss are effectively reduced, the peel strength and the toughness of the material are also remarkably improved, and the toughening agent is modified polyether sulfone microspheres; the modified polyethersulfone microspheres are prepared by coating polyethersulfone microspheres with hexamethylenediamine tetrapropionamide diamine, the hexamethylenediamine tetrapropionamide diamine is prepared by carrying out acylation condensation reaction on hexamethylenediamine tetramethyl propionate and ethylenediamine, and the polyethersulfone microspheres are prepared by carrying out electrostatic spinning on a spinning solution of polyethersulfone and vinylpyridine, so that the peel strength of the glue solution is remarkably improved.

The invention relates to the technical field of cable materials, and provides a flexible EVA cable sheath material and a preparation method thereof. The cable sheath material is prepared from the following raw materials in parts by weight: 25 to 50 parts of ethylene-vinyl acetate copolymer EVA, 15 to 30 parts of ultra-low density polyethylene, 2 to 10 parts of grafted EVA, 2 to 10 parts of flame retardant, 2 to 10 parts of polydopamine modified montmorillonite-boron nitride fiber composite material, 0.5 to 3 parts of flexibilizer, 0.2 to 1 part of silicone and 0.2 to 1 part of organopolysiloxane. A grafting monomer for grafting EVA comprises maleic anhydride and / or an acrylate compound; the polydopamine modified montmorillonite-boron nitride fiber composite material is prepared from montmorillonite, boron nitride fibers, hydroxylated lignin, dopamine hydrochloride and polyethyleneimine through a reaction. Various functional raw materials are compounded, and the obtained cable sheath has good flexibility, flame retardance, thermal deformation resistance, aging resistance and mechanical performance.

The invention discloses a low-temperature-resistant hydrolysis-resistant polyurethane protector material and a preparation method thereof. The low-temperature-resistant hydrolysis-resistant polyurethane protector material is prepared from a component A and a component B through cross-linking and curing, wherein the component A is prepared from polyether polyol, bifunctional hydroxyl-terminated polysiloxane, modified polyborosiloxane, a cross-linking agent, a chain extender, a foaming agent, a foam stabilizer, a catalyst and a pore opening agent, and the component B is isocyanate. The protective clothing prepared from the material has excellent buffer energy absorption performance, low temperature resistance and hydrolysis resistance, and meets the use requirements in extremely cold weather.

The invention discloses a heat-dissipation flame-retardant composite material as well as a preparation method and application thereof, and belongs to the field of functional composite materials. The preparation method comprises the following steps: S1, mixing a ceramic filler with a phosphorus-containing modifier, and carrying out inorganic modification to obtain a first modified filler; s2, mixing the first modified filler with an organic modifier to obtain a second modified filler; s3, mixing the second modified filler with the polymer matrix to obtain the heat-dissipation flame-retardant composite material. The organic modifier is at least one of polysilazane, polysilazane and polysiloxane. The phosphorus-containing modifier and the organic modifier are adopted to modify the ceramic filler, so that the flame retardant property, the thermal stability and the high temperature resistance of the composite material are improved, the compatibility between the ceramic filler and the filler and between the filler and a polymer substrate is improved, the dispersity of the ceramic filler in the polymer substrate is improved, and the thermal resistance of the composite material is reduced; and the heat dissipation capability of the composite material is improved.

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 relates to the technical field of coatings, and discloses a wear-resistant waterborne polyurethane finish paint and a preparation method thereof. The wear-resistant waterborne polyurethane finish paint comprises a component A and a component B in a mass ratio of (4-7): 1, the component A is prepared from the following components in parts by mass: 50 to 60 parts of waterborne polyurethane, 10 to 15 parts of hyperbranched polysiloxane, 2 to 3 parts of polyoxyethylene fatty acid, 0.8 to 1.2 parts of a de-foaming agent, 6 to 8 parts of color paste and 10 to 15 parts of water; and the component B comprises an isocyanate curing agent. The wear-resistant waterborne polyurethane finish paint prepared in the invention has excellent adhesion strength and wear resistance.

The invention discloses a low-temperature self-repairing polysiloxane material based on coordinate bonds and a preparation method and application thereof, and belongs to the field of novel materials.The low-temperature self-repairing polysiloxane material is prepared through the steps that amino of bis (3-aminopropyl)-terminated poly (dimethyl siloxane) and aldehyde group of an aldehyde group small molecule compound are subjected to a Schiff base condensation reaction, and a prepolymer is obtained; and adding metal ions into the prepolymer to carry out a coordination reaction to form a reversible metal coordination bond, and removing the solvent after the reaction is finished to obtain the low-temperature self-repairing polysiloxane material based on the coordination bond. The formed three-dimensional structure contains a large number of reversible metal coordination bonds, so that the rigidity and the mechanical strength of the material are enhanced, and meanwhile, the good self-repairing performance and the machinable recoverability of the material are ensured. The coordination bond-containing self-repairing polysiloxane material can be applied to the fields of adhesives, sealants, rapid self-repairing coatings, composite materials and the like.

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 provides a compressible high-thermal-conductivity graphene thermal interface material and a preparation method thereof. The preparation method comprises the following steps: preparing a graphene oxide film with low structural unit thickness by adopting a centrifugal spin-coating film casting method, performing limited thermal expansion delamination, compounding with polysiloxane, and performing directional lamination to obtain a highly-oriented graphene / organic silicon composite material. And applying shear stress after pressurizing and densifying along the normal direction of the graphene sheet layer, so that the graphene structure unit forms a continuous buckling structure which is high in density and easy to compress. The densification process promotes the interaction among delamination structure units, broadens a phonon transmission channel, inhibits phonon-boundary scattering, enhances the comprehensive heat-conducting property, plays a role in promoting stress transmission among graphene, and ensures the formation of a continuous buckling structure under shear stress. A continuous buckling structure and a relatively low structure unit thickness (llt in the graphene structure unit; and the compression modulus of the densified vertical graphene array is jointly reduced by means of high density, high thermal conductivity and high compressibility of an existing thermal interface material, and the method can be applied to the fields of new energy automobiles, high-power chips, aerospace electronic equipment and the like, and the problem that high density, high thermal conductivity and high compressibility of the existing thermal interface material are difficult to consider at the same time is solved.

The invention relates to the technical field of adhesives and pouring sealants, and particularly discloses a high-thermal-conductivity and high-temperature-resistant epoxy resin pouring sealant with cold and hot impact resistance, which comprises 100 parts of organic silicon modified epoxy resin with the epoxy value of 0.450-0.550 eq / 100g and the viscosity of 3000-25000mPa. S at 25 DEG C; the capsule wall material is a polyurea-silicon dioxide compound, and the wall thickness of the capsule wall material is 0.5-2 microns; 600 to 1000 parts of surface modified composite heat conduction powder; the core layer is made of nitrile rubber, the shell layer is made of polysiloxane, and the shell layer accounts for 10-30 wt%; through the synergistic effect of the surface modified composite heat-conducting powder and the core-shell structure elastomer, the mechanical strength of the material is remarkably improved while high heat conductivity is guaranteed, and compared with a traditional system, the heat-conducting property and the tensile strength are improved.

The invention relates to an automobile paint surface protective film agent and a preparation method thereof, and belongs to the technical field of automobile beauty. The automobile paint surface protective film agent is prepared from the following raw materials: amino functional polysiloxane, fluorine modified acrylic resin, epoxy modified organic silicon emulsion, functional filler, a surfactant, hydrophobic modified silicone oil, a brightening agent, a penetrating agent, a cosolvent and deionized water, and the raw materials are blended to prepare the automobile paint surface protective film agent. The functional filler is prepared by firstly carrying out surface modification on a polymer and then carrying out click chemistry on dodecanethiol on hydroxylated nano silicon dioxide, and the polymer is prepared by carrying out nucleophilic addition on poly (ethylene glycol) methacrylate Mn360, poly (ethylene glycol) methacrylate Mn500 and isophorone diisocyanate. The automobile paint surface protective film agent is high in film forming speed, a formed film layer has the characteristic of multiple effects, and meanwhile, the wear resistance is also very good.

The invention relates to the field of artificial leather, and discloses a high-dispersion halogen-free flame retardant polyether polyol composite material and a preparation method thereof, and the high-dispersion halogen-free flame retardant polyether polyol composite material comprises the following components by mass: 60-75 parts of a polyether polyol matrix; 20 to 30 parts of a core-shell synergistic flame retardant; 3 to 5 parts of a hyperbranched polysiloxane dispersant; 2-5 parts of a nano zinc borate synergist; 0.5 to 1 part of an anti-dripping agent; the preparation method comprises the following steps: preparing a phosphorus-nitrogen core-shell flame retardant; premixing with polyether polyol, and performing dynamic condensation to form a bonding interface; carrying out ultrasonic-shearing synergistic dispersion on the nano material; and finally, carrying out underwater pelletizing to obtain the high-dispersion halogen-free composite material. According to the invention, through cooperation of core-shell flame-retardant structure design and a dynamic process, and combination of hyperbranched dispersant multi-point anchoring and ultrasonic-shear energy field dispersion technologies, efficient dispersion of a flame retardant and a nano material is realized; the interfacial condensation reaction is accurately controlled through a low-oxygen environment, and the flame retardant efficiency and thermal stability of the material are improved.

The invention provides a soluble fiber inorganic ceramic plate and a preparation method thereof, and the method comprises the following steps: S10: carrying out polysiloxane coating treatment on soluble ceramic fibers to obtain modified soluble ceramic fibers; wherein the polysiloxane contains an amino group; s20, dispersing the modified soluble ceramic fibers in water to obtain a first mixed solution; s30, adding an epoxy silane coupling agent into the silica sol binder to graft epoxy groups on the surface of silicon dioxide in the silica sol binder to obtain a second mixed solution; and S40, mixing the first mixed solution and the second mixed solution to obtain slurry, performing wet vacuum forming on the slurry, and drying to obtain the soluble fiber inorganic ceramic plate. The soluble fiber inorganic ceramic plate obtained by the method has good moisture resistance and strength.

The invention relates to the technical field of PC transparent flame-retardant toughening modification, in particular to phenolic hydroxyl-terminated modified polysiloxane with a side chain containing phenyl and sulfonate groups and a preparation method of copolymerized PC. The modified polysiloxane is prepared by the following steps: performing ring opening polymerization on phenol-containing double end sockets and cyclotetrasiloxane to obtain modified polysiloxane containing double bonds and phenyl functional groups, and grafting sulfonate through a thiol-ene click chemical reaction. Diphenyl carbonate, bisphenol A and the modified polysiloxane are used as raw materials, a polysiloxane-PC block copolymer is formed through copolymerization, efficient flame retardance and high transparency are achieved, and meanwhile extremely high low-temperature impact strength is achieved.

The invention provides a sidewalk antiskid terrace material and a construction process thereof, and belongs to the technical field of terrace material manufacturing. The sidewalk antiskid terrace material is prepared from the following components: epoxy resin, polysiloxane elastic resin, fluorocarbon resin, modified covalent organic framework nanosheets, boron nitride nanotubes, nano silicon nitride particles, nano silicon dioxide, nano zinc oxide, a modified flame retardant, attapulgite, a curing agent, an accelerant, a flatting agent, a coupling agent and a dispersing agent. According to the sidewalk antiskid terrace material, various high-performance resins are compounded with the nano filler to form a coating with a compact and uniform structure, so that the mechanical strength and wear resistance of the terrace are remarkably improved. In addition, due to the application of the modified flame retardant, the floor has a good flame-retardant effect, and the safety is improved. The whole formula and the construction process are scientific and reasonable, strong adhesion of the coating is ensured, construction is simple and convenient, curing is sufficient, and the coating is suitable for long-term use of outdoor sidewalks and has attractive appearance and practicability.

The invention belongs to the technical field of organic polymer materials, and particularly discloses a high-toughness, high-strength and high-temperature-resistant organic silicon resin coating and a preparation method thereof.The organic silicon resin coating takes hyperbranched polysiloxane, organic silicon resin and filler as main components, the mass ratio of the hyperbranched polysiloxane to the filler is (0.01-0.05): 1, and the organic silicon resin and the filler are mixed uniformly. The mass ratio of the filler to the organic silicon resin is (3-6): 1. In the preparation process, siloxane and dihydric alcohol react to synthesize hyperbranched polysiloxane, then the hyperbranched polysiloxane is mixed with organic silicon resin, filler and the like and then sprayed to a target matrix, and finally the coating is formed through a stepped heating curing process. The coating provided by the invention effectively realizes synergistic enhancement of mechanical properties and heat resistance, successfully overcomes the technical bottlenecks of difficult high-temperature curing, hard and brittle texture, easy cracking, poor heat stability and the like of the traditional organic silicon resin coating, and is especially suitable for the application field with strict requirements on mechanical properties and heat resistance.

The invention relates to the field of thermoplastic elastomer materials, in particular to a TPEE synthetic brush wire and a preparation method thereof.The TPEE synthetic brush wire is prepared from, by weight, 55-75 parts of TPEE resin, 25-45 parts of polyester resin, 5-10 parts of compatilizer, 8-16 parts of modified polysiloxane, 12-24 parts of plasticizer, 1-3 parts of lubricant, 0.3-1 part of antioxidant and 0.6-1.2 parts of stabilizer. The TPEE resin and the polyester resin are used as main raw materials, the compatilizer, the modified polysiloxane and the plasticizer are added as auxiliary raw materials, and the lubricant, the antioxidant and the stabilizer are added as additives, so that the prepared brush wire not only has the advantages of proper hardness and rigidity and high strength, but also has better antibacterial performance.

The invention relates to the technical field of ceramics, and discloses a high-toughness high-temperature-resistant ceramic material and a preparation method thereof.The high-toughness high-temperature-resistant ceramic material comprises, by weight, 100 parts of quartz powder, 15-32 parts of potassium feldspar, 3-6 parts of boric acid, 0.8-2 parts of modified polysiloxane and the like. And the side chain of the modified polysiloxane contains a large amount of carboxyl, and forms interfacial interaction with the surfaces of the quartz and the potassium feldspar, so that the effect of a dispersing agent is achieved, and the mechanical strength of the calcined ceramic material is favorably improved. Modified polysiloxane contains a naphthalene ring structure with high carbon content, after high-temperature calcination, polysiloxane is taken as a silicon source, naphthalene rings are carbonized, high-temperature pyrolysis is carried out, a large number of silicon carbide reinforced phases are more easily formed, the silicon carbide reinforced phases are uniformly dispersed in a quartz ceramic matrix, the mechanical strength and toughness of the ceramic material are remarkably improved, the high-temperature resistance is excellent, and the modified polysiloxane has good application prospects in heat-resistant ceramic lampshades, heat-resistant ceramic lampshades, heat-resistant ceramic lampshades and heat-resistant ceramic lampshades. The heat-resistant ceramic base has good practical application.

The invention discloses an all-water foaming organic silicon polyurethane foam material and a preparation method thereof. The organic silicon polyurethane foam material is composed of a component A and a component B, the component A comprises a polyether grafted polysiloxane (polyether block) copolymer, water, a catalyst and a foam stabilizer; the component B is isocyanate; the preparation method comprises the following steps: uniformly stirring and mixing a component A and a component B, freely foaming to form a crude product, and curing and curing the crude product to obtain the all-water foaming organic silicon polyurethane foam material, the organic silicon polyurethane foam material prepared by adopting an all-water foaming technology is high in organic silicon component content, green, environment-friendly, simple in process, low in cost, relatively low in odor in the foaming process, excellent in performance, uniform and defect-free in foam pores, high in tensile strength and tearing strength of foam, excellent in elongation at break, large in water contact angle and excellent in hydrophobicity.

The invention discloses compression-resistant glass and a preparation method thereof, and relates to the technical field of special glass. When the compression-resistant glass is prepared, an anorthite crystal phase is used as a main material, a wollastonite crystal phase is used as an auxiliary material, and zinc, barium, boron, sodium, antimony and titanium elements are added, so that the compression-resistant glass ceramic is prepared; the preparation method comprises the following steps: mixing tetraethoxysilane, zirconium oxychloride octahydrate and 3-glycidyl ether oxypropyl trimethoxy silane, adding hydrochloric acid, and stirring to obtain modified sol; the preparation method comprises the following steps: mixing hydroxyl-terminated polysiloxane, trimethyl ethyoxyl silane, methyl triethyoxyl silane and octadecyl triethyoxyl silane, adding a hydrochloric acid solution, and reacting to prepare an organosilane modified solution; mixing the modified sol and the organosilane modified solution, coating the surface of the compression-resistant microcrystalline glass with the mixture, and curing to obtain the compression-resistant glass. The compressive glass prepared by the invention has the advantages of high compressive strength, hydrophobicity, wear resistance and high surface hardness.

The invention discloses a sulfydryl silicon resin, a UV light-cured organic silicon optical adhesive as well as a preparation method and application thereof. The optical adhesive comprises sulfydryl silicon resin, vinyl polysiloxane and a photoinitiator, the molar ratio of sulfydryl in the sulfydryl silicon resin to vinyl in the vinyl polysiloxane is (1.2-1.5): 1; the molar ratio of vinyl in the vinyl polysiloxane to the photoinitiator is 1: (0.3-1.8). The optical adhesive disclosed by the invention can be subjected to rapid photocuring based on a click reaction of sulfydryl-vinyl, the preparation method of the optical adhesive does not need a solvent, and compared with conventional OCA, the optical adhesive has a certain filling advantage in the aspect of a full-lamination process, also has relatively high binding power, relatively low stress relaxation rate and excellent creep recovery rate, and can be used for preparing the optical adhesive. Therefore, the optical adhesive is especially suitable for flexible display application scenes represented by folding screens.

The invention relates to the technical field of glazes, and discloses a high-performance ceramic glaze for bacteriostatic domestic porcelain and a preparation method thereof. The high-performance ceramic glaze of the antibacterial domestic porcelain is prepared from the following raw materials in parts by weight: 5 to 15 parts of albite, 20 to 30 parts of potassium feldspar, 10 to 30 parts of kaolin, 13 to 26 parts of quartz, 0.3 to 7 parts of talc, 5 to 10 parts of limestone, 2 to 5 parts of ludwigite, 0.5 to 1 part of rare earth, 2 to 5 parts of honeysuckle-loaded CuS, 1 to 3 parts of modified polysiloxane, 0.1 to 0.5 part of sodium tripolyphosphate and 0.1 to 0.3 part of carboxymethyl cellulose. The high-performance ceramic glaze for the antibacterial domestic porcelain prepared by the invention has relatively good long-acting antibacterial performance and high strength.

The invention discloses a modified organic silicon marine antifouling paint and coating based on dynamic crosslinking of boric acid ester, and the modified organic silicon marine antifouling paint based on dynamic crosslinking of boric acid ester comprises the following components in parts by weight: 20-40 parts of a component A; 4-10 parts of a component B; 1-3 parts of a component C; wherein the component A comprises hydroxyl-terminated polydimethylsiloxane, borate modified polysiloxane, an auxiliary agent, a pigment filler and a first solvent, the component B comprises a curing agent and a second solvent, and the component C comprises a catalyst and a third solvent. Hydrolysis of boric acid ester bonds increases the hydrogen-bond interaction between the coating and a base material, and meanwhile, ether groups are introduced to strengthen the hydrogen-bond interaction effect, so that the coating can be firmly adhered to the intermediate paint in a seawater soaking environment.

The invention provides a needle-flame-resistant flame-retardant polycarbonate composition and a preparation method thereof, and relates to the technical field of flame-retardant polycarbonate materials. The needle-flame-resistant flame-retardant polycarbonate composition is prepared from the following raw material components in parts by weight: 100 parts of polycarbonate and 1 to 15 parts of hyperbranched flame retardant, the hyperbranched flame retardant is obtained by reaction of reaction raw materials containing double-terminal hydroxyl polysiloxane and phosphorus oxychloride. The hyperbranched flame retardant is added into polycarbonate, the characteristics of polysiloxane and organophosphate are combined, and the polycarbonate material has good flame retardance and meanwhile achieves needle flame resistance flame retardance and UL-94 vertical combustion V-0 grade.

The invention discloses a large-current-carrying-capacity flexible power cable, which belongs to the technical field of cable preparation, is used for solving the technical problem that the flame retardant property and the mechanical property of the power cable need to be further improved in the prior art, and specifically comprises a cable core, a wrapping layer, an insulating layer and a sheath layer which are sequentially arranged from inside to outside. The preparation method comprises the following steps: preparing alkoxy silane containing a benzocyclobutene group, preparing flame-retardant particles by using a sol-gel method, preparing modified polyurethane by using modified polysiloxane and 2, 5-furandimethanol as soft segments, naphthalene diisocyanate as a hard segment and trimethylolpropane as a chain extender, and preparing the flame-retardant flame-retardant polyurethane. The linear low-density polyethylene, the MAH-g-PE, the modified polyurethane, the flame-retardant particles and the auxiliary additive are melted and extruded outside the wire core to form the insulating layer, so that the power cable is obtained, the flame-retardant property of the power cable is effectively improved, and the mechanical property and the current-carrying stability of the power cable are also improved.

The invention provides organic silicon cooling liquid and a preparation method thereof. The molecular structural formula of the organic silicon cooling liquid is shown in the specification, R1 is selected from C3-7alkane, the value of a is 0-12, and the value of b is 14-20. A phenyl group and a long-chain alkyl side chain are introduced into a silicone oil main chain through an organic synthesis means, the regularity of a polysiloxane chain is destroyed, the crystallization property of the polysiloxane chain is reduced, the performance of the organic silicon cooling liquid is changed from the molecular structure, and the organic silicon cooling liquid can still flow at a low temperature (-65 DEG C). In addition, by introducing phenyl, the flash point, irradiation resistance and other properties of the immersed cooling liquid can be remarkably improved. # imgabs0 #