659 results about "Hydrosilylation" patented technology

The invention discloses water-activated cold patch asphalt, a water-activated cold patch asphalt mixture and a preparation method of the water-activated cold patch asphalt mixture. The asphalt comprises the following components in parts by weight: 100 parts of matrix asphalt, 20-30 parts of a bio-oil diluent, 30-45 parts of a polyurethane prepolymer and 1-5 parts of a dewatering agent. The polyurethane prepolymer comprises a main body polyurethane prepolymer and an organic silicon modified polyurethane prepolymer, and the organic silicon modified polyurethane prepolymer accounts for 20 to 30 weight percent of the main body polyurethane prepolymer. The organic silicon modified polyurethane prepolymer is prepared by carrying out hydrosilylation reaction on a polyurethane prepolymer containing a carbon-carbon double bond and a siloxane compound containing a silicon hydrogen group in a mass ratio of (15-25): 1. The cold patch asphalt mixture disclosed by the invention has excellent water damage resistance, and has relatively strong adaptability to severe environments such as rain, snow and accumulated water.

The invention relates to the technical field of fibers, and discloses a high-elasticity polyurethane flame-retardant fiber, a preparation method and application of the high-elasticity polyurethane flame-retardant fiber to a telescopic electric wire. The preparation method comprises the following steps: by using 1, 1, 3, 3-tetramethyldisiloxane as a bridging agent through hydrosilylation reaction, connecting allyl modified DOPO with allyl phenoxy cyclotriphosphazene to prepare a flame retardant with three flame-retardant elements of phosphorus, nitrogen and silicon at the same time; the preparation method comprises the following steps: preparing a polyurethane urea solution by a method of adding 4, 4-diphenylmethane diisocyanate in batches, introducing a flame retardant, mixing the polyurethane urea solution with an antioxidant, a dyeing assistant and a delustering agent, and carrying out dry spinning to obtain the high-elasticity polyurethane flame-retardant fiber. The polyurethane fiber has excellent flame retardant property and heat resistance, and good mechanical property and resilience, and can be applied to telescopic electric wires.

The invention belongs to the field of fine chemical engineering, and particularly relates to an N-heterocyclic carbene complex catalyst and application of the N-heterocyclic carbene complex catalyst in pipelined continuous synthesis of a silane coupling agent. The invention provides an N-heterocyclic carbene complex catalyst, which comprises a ligand and an active component, the ligand is an N-heterocyclic carbene ligand, and the active component is a transition metal; the molar ratio of the N-heterocyclic carbene ligand to the transition metal is 1: 1. The invention also provides a method for pipelined continuous synthesis of the silane coupling agent, which comprises the following steps: carrying out homogeneous hydrosilylation reaction in a pipelined reactor by taking hydrogen-containing silane and unsaturated hydrocarbon as raw materials in the presence of an N-heterocyclic carbene complex catalyst to obtain the silane coupling agent. The spatial configuration and the electronic property of the N-heterocyclic carbene ligand precursor are designed and regulated, so that the N-heterocyclic carbene ligand precursor is matched with transition metal, and the N-heterocyclic carbene ligand precursor can be applied to hydrosilylation reaction.

A reaction mixture for producing a film-forming polycarbosilazane polymer comprises a first compound containing at least two unsaturated groups and a second compound containing at least two —SiH2— hydrosilyl functional groups, wherein the reaction mixture is capable of forming the film-forming polycarbosilazane polymer utilizing hydrosilylation of the first compound by the second compound. Also disclosed are methods of forming a silicon and carbon containing film on a substrate comprising the steps of producing a film-forming polycarbosilazane polymer by a polymerization of a reaction mixture of a first compound containing at least two unsaturated groups and a second compound containing at least two hydrosilyl functional groups, forming a solution containing the film-forming polycarbosilazane polymer, and contacting the solution with the substrate via a spin-on coating, spray coating, dip coating, or slit coating technique to form the silicon and carbon containing film on the substrate.

The invention discloses conductive paste, a preparation method thereof and a radio frequency identification tag. The conductive paste comprises the following raw materials in parts by mass: 30-40 parts of spherical silver powder, 3-6 parts of carbon nanotubes, 20-30 parts of a resin adhesive, 40-50 parts of a diluent and 2-4 parts of a dispersant, the resin adhesive comprises polyurethane resin and an organosilicone modified acrylate monomer in a mass ratio of (8-9): (1-2), and the organosilicone modified acrylate monomer is obtained by hydrosilylation of a hydroxyl acrylate monomer and a hydrogen-containing silane compound in a molar ratio of (1.0-1.1): 1. According to the invention, the contradiction between the conductive performance and fluidity and the product flexibility of the conductive paste can be effectively solved, and the RFID product with high conductivity, printing quality and mechanical flexibility can be prepared.

The invention discloses a preparation method of silane or siloxane containing adamantyl. According to the invention, adamantane carboxylic acid is taken as a starting raw material, an adamantane compound containing double bonds at the tail end is obtained through an esterification reaction, and then the adamantane compound and hydrogen-containing silane or hydrogen-containing siloxane are subjected to a hydrosilylation reaction to prepare adamantyl-containing silane or siloxane. The method is mild in reaction condition, simple, convenient and easy to operate, capable of achieving preparation of adamantyl silane or siloxane of various structures, wide in application range and capable of providing diversified choices for development of novel adamantyl modified organic silicon materials.

The invention relates to the field of high polymer materials, and discloses a preparation method of high-temperature-resistant oil-resistant special functional silica gel, which comprises the following steps: adding a thermoplastic polyester elastomer, fluorosilicone rubber and a macromolecular compatilizer into an extruder through a main feeding port, and carrying out melt blending; adding hydrogen-containing silicone oil, a platinum catalyst and an internal closed type cross-linking agent through a side feeding port, and carrying out distributed blending; under the condition that the temperature is higher than the deblocking temperature of the cross-linking agent, initiating the internal closed cross-linking agent to perform physical thermal cracking shelling and release cross-linking sites, and guiding hydrosilylation reaction to perform dynamic vulcanization; and after vacuumizing and exhausting, extruding and pelletizing to obtain the silica gel. Through cooperation of a space-time decoupling distributed feeding process and a non-toxic thermal deblocking cross-linking agent, catalyst poisoning caused by early-stage high-temperature shear consumption and by-products is avoided, a cross-phase covalent interlocking network is constructed at a polyester and fluorine-silicon two-phase interface, permeation of a non-polar solvent is hindered, and therefore the performance of the fluorine-silicon copolymer is improved. The volume swelling ratio of the material is reduced; and the high-temperature aging resistance is improved.

The invention provides a single-component modified silane adhesive as well as a preparation method and application thereof. The adhesive is prepared by mixing the following components: silane modified polyether resin, silane modified polymer resin, a plasticizer, a composite light stabilizer, a filler, a rheological additive, a water removal agent, a coupling agent and a catalyst, the silane modified polyether resin is silane-terminated resin prepared by a hydrosilylation method; the silane-modified polymer resin is a silane-terminated polymer resin containing a urethane bond. The adhesive is excellent in comprehensive performance, the tensile strength of a body is larger than 3 MPa, the elongation at break is larger than 450%, the adhesive is high in adhesion universality to metal base materials, PET films, ceramics, glass, wood floors, PVC, PC, ABS, wood-plastic composite materials and paint faces, the base materials do not need to be specially treated, the damage form is cohesive failure, and the adhesive has good adhesion strength, tear resistance and excellent temperature resistance and is suitable for being applied to the field of wood products. After aging at 120 DEG C for one week, the tensile strength of the body is greater than 3 MPa, the elongation at break is greater than 430%, and the surface layer can be coated after curing.

The invention discloses a powder treating agent, two-component heat-conducting gel as well as a preparation method and application of the two-component heat-conducting gel. The powder treating agent is prepared by sequentially carrying out hydrosilylation reaction on D4H cyclotetrasiloxane, vinyl silane, olefin and phenyl vinyl silicone oil. Wherein the structural formula of the vinyl silane is Vi-Si-(OR1) 3, and OR1 is a methoxy group, an ethyoxyl group, a formyloxy group or an acetoxyl group; the structural formula of the olefin is # imgabs0 # 20 > = q > = 8; and Vi is vinyl. According to the powder treating agent disclosed by the invention, a polysiloxane polymer and a phenyl group are introduced, so that the powder treating agent has excellent temperature resistance, is not degraded and volatilized under the condition of long-time high-temperature aging, ensures that hardness and thermal resistance are not obviously increased and has excellent thermal stability, and when the powder treating agent is used in heat-conducting gel, the thermal stability of the heat-conducting gel is effectively improved, and the service life of the heat-conducting gel is prolonged. And the service life and the period of the electronic component are prolonged.

The invention mainly relates to the field of organosilicone chemistry, the field of daily chemicals and the field of high polymer materials, in particular to an organosilicone elastomer and a preparation method thereof. Comprising the following components: a side chain, divinyl terminated polysiloxane, hyaluronic acid modified single-ended vinyl polysiloxane, phenyl modified vinyl polysiloxane, a carrier fluid and a catalyst for hydrosilylation, a phenyl chain segment is introduced on the basis of a conventional elastomer net structure, so that the compatibility with various personal care components and active components is improved. In addition, hyaluronic acid, which is an excellent natural moisturizing factor, is introduced to improve the moisturizing performance of the organic silicon elastomer, so that the aim of moisturizing the skin is fulfilled. Meanwhile, the preparation method is simple, and mass production is easy to realize.

The invention discloses a method for continuously synthesizing long-chain alkyl modified silicone oil, which belongs to the technical field of organic synthesis, and comprises the following specific steps: quickly mixing hydrogen-containing silicone oil and long-chain olefin in a micro-mixer, carrying out hydrosilylation reaction in a packed tubular reactor, controlling the reaction residence time by using the tube length, and continuously synthesizing the long-chain alkyl modified silicone oil. Controlling the material ratio by utilizing the reaction liquid flow ratio, controlling the reaction temperature by utilizing a water bath, and obtaining a mixed solution containing modified silicone oil after the reaction is completed; and decoloring the mixed solution by using activated carbon, and then carrying out reduced pressure rotary evaporation on the decolored mixed solution to finally obtain a modified silicone oil pure product. The method realizes continuous synthesis of the modified silicone oil, and has the advantages of simple process, short reaction time and high reaction safety.

The invention relates to a high-strength and high-elasticity organic silicon light-cured 3D printing material and a preparation method thereof.The preparation method comprises the steps that multi-arm vinyl silicone oil with macrocyclic phenyl siloxane as a core, a polysiloxane polymer containing silicon-hydrogen groups, filler and auxiliaries are mixed and stirred to be uniform according to the mass percent, then a photoinitiator is added, the mixture is stirred to be uniform, and the high-strength and high-elasticity organic silicon light-cured 3D printing material is obtained; the organic silicon photosensitive resin material is prepared. According to the preparation method, the ultraviolet light is adopted to initiate local short-time curing of the addition type organic silicon material, rapid curing forming of the organic silicon material in the photocuring 3D printing process is achieved, and a formed part is colorless and transparent and has good mechanical performance. Vinyl silicone oil used in the process method is multi-arm vinyl silicone oil, has the characteristics of excellent thermal stability, good mechanical property, low dielectric constant, excellent biocompatibility and the like, has a three-dimensional and regular structure and high surface functional group density, and can increase crosslinking sites of hydrosilylation reaction to form a compact crosslinked network structure; the mechanical property of the material is improved.

The present invention is an addition-curable silicone composition containing components (A) to (C): (A) An addition reaction product of an organopolysiloxane represented by formula (1) and a compound represented by formula (2), the addition reaction product having two addition-reactive carbon-carbon double bonds per molecule. (1) (R1 is a C1-12 monovalent hydrocarbon group, R2 is a methyl group or a phenyl group, a is an integer of 0-50, and b is an integer of 0-300. ), (2) (R3 represents a C1-12 divalent hydrocarbon group.), (B) an organosilicon compound having a hydrogen atom bonded to at least two silicon atoms per molecule, and (C) a hydrosilylation reaction catalyst. Thus, provided are an addition-curable silicone composition that has high transparency and a high refractive index and yields a cured product having high strength and high elongation and a highly reliable optical semiconductor device sealed by a cured product thereof.

A process for the preparation of a curable thermally conductive composition and the process comprises the steps of: (I) preparing an admixture comprising the following components (A), (B1), (C), (D) and (E): (A) 3 wt% to 10 wt% of a Q-branched alkenyl functional polyorganosiloxane having at least three terminal alkenyl groups per molecule, and having a viscosity of from 25 mPa * s to 2000 mPa * s as determined at 25 DEG C according to ASTM D445-21 using a viscometer of the glass capillary Cannon-Finsky type; and a method for preparing the same, wherein the viscosity is from 25 mPa * s to 2000 mPa * s as determined at 25 DEG C using a viscometer of the glass capillary Cannon-Finsky type; (B1) a silyl-hydride functional polysiloxane crosslinker containing at least two silyl-hydride groups per molecule, and present in a concentration that provides a molar ratio of silicon-bonded hydrogen atoms in (B1) to alkenyl groups in the Q-branched alkenyl functional polyorganosiloxanes in the range of 0.2 to 0.35; (C) 90 wt% or more of a thermally conductive filler; (D) a filler treatment agent; and (E) a platinum-based hydrosilylation reaction catalyst; (II) curing the admixture obtained from step (I) by heat, thereby forming a pre-cured composite material; and (III) mixing the pre-cured composite material obtained from step (II) with (B2) a silyl-hydride functional polysiloxane cross-linking agent containing at least two silyl-hydride groups per molecule; thereby obtaining a curable thermally conductive composition; wherein the molar ratio of the total silicon bonded hydrogen atoms in the silyl-hydride functional polysiloxane crosslinkers (B1) and (B2) to the alkenyl groups in the Q-branched alkenyl functional polyorganosiloxane (A) is greater than 0.45; and wherein the weight percentages are relative to the weight of the curable thermally conductive composition.

The invention belongs to the technical field of high polymer materials, and particularly relates to weather-resistant high-toughness PP (polypropylene) plastic as well as a preparation method and application thereof. The preparation method comprises the following steps: adding SBS resin into an organic solvent, heating, stirring and dissolving, then adding hydrogen-containing silicone oil and a hydrosilylation catalyst, heating, stirring and reacting, and drying and granulating after the reaction is completed to obtain the organic silicon modified SBS thermoplastic elastomer toughening agent. Uniformly mixing the obtained organic silicon modified SBS thermoplastic elastomer toughening agent with PP granules and reinforcing filler, and extruding and granulating to obtain reinforced PP master batch; uniformly mixing the obtained reinforced PP master batch and PP granules again, extruding into a mold, and cooling and molding, so as to obtain the weather-resistant high-toughness PP plastic. The PP plastic is subjected to blending modification by adopting the organic silicon modified SBS thermoplastic elastomer toughening agent, so that the toughness and weather resistance of the PP plastic can be remarkably improved. The method can be used for preparing low-temperature-resistant environment-friendly pipelines and floor products.

The present invention provides a paste-like heat dissipating silicone composition in which a crosslinked structure is formed, and which contains an addition reaction product of a component (A) and a component (B), and components (C), (D), and (E): (A) an organopolysiloxane which has an alkenyl group bonded to a silicon atom, but does not have an alkoxy group bonded to a silicon atom at a molecular chain terminal; (B) an organohydrogenpolysiloxane which has a hydrogen atom bonded to a silicon atom; (C) a thermally conductive filler; (D) an electromagnetic wave absorbing filler; and (E) a hydrosilylation reaction catalyst. As a result, the present invention provides: a silicone composition which exhibits excellent mountability and reliability, and has both heat dissipation properties and electromagnetic wave absorption properties; and a method for producing the silicone composition.

The invention provides an oleic acid-resistant bio-based reactive polyurethane hot melt adhesive and a preparation method thereof. The reactive polyurethane hot melt adhesive is prepared from the following raw materials in parts by weight: 10 to 15 parts of silicon-based diisocyanate, 10 to 12 parts of phenyl diisocyanate, 50 to 60 parts of bio-based polymer dihydric alcohol, 10 to 20 parts of multi-arm polyethylene glycol, 5 to 10 parts of acrylic resin, 1 to 2 parts of coupling agent and 0.2 to 0.5 part of catalyst. The silicon-based diisocyanate is prepared by carrying out a hydrosilylation reaction on bifunctional hydrogen-containing silane and monoalkenyl unsaturated isocyanate according to a molar ratio of 1: (2.1-2.15); si-O-Si bonds which are not easy to hydrolyze are introduced, so that the breakage of a polyurethane molecular main chain is stopped, and the oleic acid resistance and the damp-heat aging resistance are improved; the cross-linking density of the hot melt adhesive is improved by multi-arm polyethylene glycol, and a polyurethane molecular chain is protected from being eroded by oleic acid and damp heat; the silicon-based diisocyanate and the multi-arm polyethylene glycol cooperate to improve oleic acid resistance and damp-heat aging resistance of the hot melt adhesive.

The invention discloses silanized polyphenyl ether resin and a preparation method thereof, and a high-temperature-resistant low-dielectric material and a preparation method thereof. The preparation method of the high-temperature-resistant low-dielectric material comprises the following steps: reacting polyphenyl ether resin with a brominating agent to obtain brominated polyphenyl ether resin, and carrying out amination reaction on the brominated polyphenyl ether and allylamine to obtain polyphenyl ether resin with high allyl content; the preparation method comprises the following steps: under the action of a photoinitiator, carrying out sulfydryl-alkene click chemical reaction on allyl polyphenyl ether resin and sulfydryl silane under an ultraviolet light condition to obtain silanized polyphenyl ether resin, or carrying out hydrosilylation reaction on the allyl polyphenyl ether resin and hydrogen-containing silane under the action of a catalyst to obtain the silanized polyphenyl ether resin; and carrying out moisture curing under the action of a catalyst to obtain the high-temperature-resistant low-dielectric material with excellent performance. The preparation and curing method is simple and convenient, the raw materials are easy to obtain, moisture curing can be realized, and the cured material has the characteristics of excellent high temperature resistance and low dielectric property.

The invention discloses a raw foil titanium composite anode plate and a preparation method thereof, and belongs to the technical field of electrolytic copper foils, vinyl cage-type nanospheres prepared by a sol-gel method and 1, 1, 3, 3-tetramethyldisiloxane-propyl glycidyl ether are subjected to hydrosilylation reaction to obtain epoxy cage-type nanospheres, and the epoxy cage-type nanospheres and 1, 1, 3, 3-tetramethyldisiloxane-propyl glycidyl ether are subjected to hydrosilylation reaction to obtain the raw foil titanium composite anode plate. The amino group on the surface of the chitosan / mesoporous silica core-shell powder is utilized to initiate ring opening of the epoxy group of the epoxy cage type nanosphere, so that the surface of the chitosan / mesoporous silica core-shell powder is uniformly coated with the epoxy cage type nanosphere, and the multi-layer core-shell micron carbon sphere is formed after calcination; the micron carbon spheres can disperse stress through the multi-layer core-shell structure of the micron carbon spheres, so that surface cracking of the anode caused by impact of high-flow electrolyte is avoided; the micron carbon spheres can form a micro convex structure on the surface of the pretreated foil rolled material, so that the surface roughness can be increased, the falling of an oxide layer is avoided, and the micron carbon spheres can obviously increase the conductivity of the titanium anode.

The invention discloses a high-strength antibacterial polypropylene staple fiber and a preparation method thereof. The polypropylene staple fiber comprises the following raw materials in parts by mass: 100 parts of polypropylene and 1-3.5 parts of modified nano titanium dioxide, the modified nano titanium dioxide comprises the following raw materials: nano titanium dioxide, a vinyl silane compound, double-end hydrogen-containing silicone oil and styrene in a mass ratio of 100: (3-5): (10-30): (2-5), and the double-end hydrogen-containing silicone oil has two silicon hydrogen end-capping groups; the nano titanium dioxide is subjected to surface treatment by a vinyl silane compound, and then is subjected to hydrosilylation reaction with double-end hydrogen-containing silicone oil and styrene under the action of a platinum catalyst. According to the invention, the polysiloxane chain segment with enhancing, plastifying and broad-spectrum antibacterial effects is introduced to graft the nano titanium dioxide, so that the balance of various properties such as mechanical strength, antibacterial efficiency and softness of the polypropylene staple fiber is realized.

A curable composition comprises: at least one aliphatic carbosilane having m Si—H groups, at least one aliphatic carbosilane having n vinyl groups, and at least one hydrosilylation reaction catalyst. m is an integer greater than or equal to 2, n is an integer greater than or equal to 2, and m+n is at least 5. A cured reaction product and an electronic article including the same are also disclosed.

Provided is a curing reactive organopolysiloxane composition that forms a pressure-sensitive adhesive layer having a high shear storage elastic modulus and stress at 500% strain and having excellent adhesive strength. The organopolysiloxane composition comprises: (A) a chain organopolysiloxane having an alkenyl group; (B) an organopolysiloxane resin having 9 mol % or less of hydroxyl groups and the like, and being a mixture of (b1) an organopolysiloxane resin having a (Mw) of 4500 or more and (b2) an organopolysiloxane resin having a (Mw) of less than 4500; (C) an organohydrogenpolysiloxane; and (D) a hydrosilylation reaction catalyst. A mass ratio of a resin component to a chain siloxane component is within a range of 1.4 to 3.0 A pressure-sensitive adhesive layer obtained by curing the composition has a shear storage elastic modulus G′ at 25° C. of 3.5 MPa or more, and a stress at 500% strain of 0.25 MPa or more.

The present invention relates to a process for producing high-purity hydrosilylation products, and also to the products that may be produced by this process and to the use thereof as surfactants.

The invention discloses a preparation method of a tackifying flame-retardant organic silicon pressure-sensitive adhesive, which comprises the following steps: carrying out hydrosilylation reaction between a vinyl trimethoxy silane coupling agent and methyl hydrogen-containing silicon resin to synthesize an organic silicon tackifier MQ-ETMS, and carrying out wet modification on aluminum diethylphosphinate by using an olefinic bond-containing silane coupling agent to prepare a flame retardant K-ADP. After the prepared organic silicon tackifier and the flame retardant are introduced into an organic silicon pressure-sensitive adhesive system, the high-performance organic silicon pressure-sensitive adhesive tape is prepared through blending, coating, solvent volatilization and heating crosslinking. The synthesized tackifier is rich in methoxyl functional groups, the functional groups enhance the interaction between the organic silicon pressure-sensitive adhesive and the surface of an adhered material, and meanwhile, the olefinic bond-containing silane coupling agent is utilized to perform surface modification on the aluminum diethylphosphinate, so that the problem of dispersion of a traditional flame retardant added into the organic silicon pressure-sensitive adhesive is solved; therefore, the adhesion performance and the flame retardant property of the organic silicon pressure-sensitive adhesive are both improved.

The invention relates to the technical field of organic silicon catalysis, and discloses a hydrosilylation reaction catalyst and a preparation method thereof, the catalyst is prepared from a platinum complex catalyst solution, maleic anhydride, triphenyl borate, tetraethoxysilane, propylene carbonate and diethylene glycol dibutyl ether; the preparation method comprises the steps of solvent water removal, electronic relay adduct preassembly, active metal introduction, thermal induction aging and the like. An electron-deficient coordination center is constructed through a step-by-step process, the electron cloud density of the platinum center is reduced by utilizing the Lewis acid characteristic of triphenyl borate, and the solvent cage effect of propylene carbonate is matched, so that the high-temperature tolerance of the catalyst is improved, and the generation of platinum black is effectively inhibited; meanwhile, the solubilizing and bridging effects of diethylene glycol dibutyl ether are utilized, the compatibility problem of a high-polarity component and a non-polar silicone oil matrix is solved, and the obtained catalyst has high activity, high regioselectivity and excellent long-term storage stability.

The invention relates to the technical field of preparation of heat-conducting gel, in particular to a preparation method of 12W single-component curable heat-conducting gel with a high extrusion rate. The preparation method comprises the following steps: carrying out hydrosilylation reaction on trimethoxy single-end-capped vinyl-side silicone oil and end hydrogen-containing silicone oil, adding a heat-conducting filler to form a mixture, carrying out high-temperature treatment to hydrolyze hydroxyl and trimethoxy on the surface of mixture powder to generate methanol, and volatilizing at high temperature; meanwhile, D3-D20 in the organic matter is also removed in a high-temperature environment, so that the vinyl silicone oil can directly wrap the surface of the heat-conducting powder, the viscosity of an oil-powder mixture is reduced, and the heat conductivity coefficient is further improved. The invention provides a preparation method of 12W single-component curable heat-conducting gel with a high extrusion rate.

The present invention aims to provide a high-resilience single-component organopolysiloxane composition and a preparation method therefor. The high-resilience single-component organopolysiloxane composition is suitable for sealing bonding for various automobile, industrial and electronic parts and components, especially for a sealing bonding scene where a formed-in-place gasket (CIPG) is applied. The high-resilience single-component organopolysiloxane composition of the present invention comprises at least the following components (A)-(E): (A) an organopolysiloxane having at least two alkenyl groups per molecule; (B) an organopolysiloxane having at least two Si-H bonds per molecule; (C) a hyperbranched organosilicon cross-linking agent; (D) a hydrosilylation catalyst; and (E) fumed white carbon black. In the present invention, the hyperbranched organosilicon cross-linking agent is prepared by means of a hydrosilylation reaction, wherein a multifunctional organosilicon molecule acts as a core basis of the hyperbranched structure. On the one hand, by means of the hyperbranched structure, the spatial distance between cross-linking points is increased, so that the cured polysiloxane composition has good resilience performance; on the other hand, an active group for increasing interface bonding is introduced into the hyperbranched organosilicon cross-linking agent, so that the hyperbranched organosilicon cross-linking agent also has good bonding performance on an interface of a material while a cross-linking curing effect is achieved.

The invention relates to a preparation method of supported porous carbon for catalyzing hydrosilylation reaction, which comprises the following steps: (S1) mixing thermoplastic phenolic resin, polyindole boric acid and a stabilizer, and heating to react to obtain modified phenolic resin; the mass ratio of the thermoplastic phenolic resin to the polyindole boric acid is 100: (15-25); (S2) dissolving the modified phenolic resin, a pore-foaming agent and a curing agent in a solvent, removing the solvent, and crushing to obtain solid particles; (S3) carrying out thermocuring, pre-oxidation, carbonization, activation and oxidation treatment on the solid particles in sequence to obtain oxidized porous carbon; (S4) modifying the oxidized porous carbon with vinyl siloxane to obtain vinyl siloxane modified porous carbon; and (S5) dipping the vinyl siloxane modified porous carbon in an alcoholic solution of platinum salt to obtain the supported porous carbon. The supported porous carbon prepared by the invention has excellent catalytic efficiency and good stability when being used for catalyzing hydrosilylation reaction, and can be recycled.

The invention relates to a 2N type manganese complex and a preparation method thereof, and a preparation method of phenylalkyl disiloxane. The invention discloses a 2N-type manganese complex and a preparation method thereof, and the preparation method comprises the following steps: (1) adding 2-bromo-pyridine, a ligand, potassium carbonate and cuprous iodide into a dimethyl sulfoxide solution, and reacting at 110-130 DEG C for 20-28 hours to obtain an N, N bidentate ligand; the ligand is 1-(pyridine-2-yl)-1H-indole, or 2-(1H-pyrazole-1-yl) pyridine, or 2-(2H-1, 2, 3-triazole-2-yl) pyridine, and the ligand is one or more of 1-(pyridine-2-yl)-1H-indole, 2-(1H-pyrazole-1-yl) pyridine, 2-(2H-1, 2 And (2) dissolving the N, N bidentate ligand and Mn (CO) 5Br in a tetrahydrofuran solution, and reacting at 65-75 DEG C for 10-14 hours to obtain the 2N type manganese complex. According to the 2N-type manganese complex, the preparation method thereof and the preparation method of the phenyl alkyl disiloxane, the 2N-type manganese complex is used as a catalyst for hydrosilylation reaction of pentamethyldisiloxane, styrene and derivatives thereof to prepare the phenyl alkyl disiloxane.

The present invention relates to an organopolysiloxane composition comprising an organopolysiloxane having at least two alkenyl groups per molecule, an organopolysiloxane having at least two SiH units per molecule, a hydrosilylation catalyst, and a thermally conductive filler, the thermally conductive filler comprising at least 40% by weight of metal silicon and a specific particle size distribution. The present invention also relates to an organosilicon elastomer obtainable by crosslinking and / or curing the composition, and to its use as a coating or filling thermally conductive material particularly for the automotive field, especially for the field of electric vehicles.