83 results about "Organic Ester" patented technology

The invention relates to retarded acid for a carbonate rock reservoir and application thereof, and aims to solve the problems of poor high temperature resistance and too high acid rock reaction rate of the current retarded acid for the carbonate rock reservoir. The retarded acid for the carbonate rock reservoir comprises an acid agent, a functional aid and water; the acid agent comprises inorganic acid, organic acid, a chelating agent and organic ester in a mass ratio of 1: (10-13): (5-6): (3-4). According to the retarded acid provided by the invention, the acid agent is specifically designed, and the inorganic acid, the organic acid, the chelating agent and the organic ester in a specific ratio are matched, so that the retarded acid has high temperature resistance, and meanwhile, the problem that the acid-rock reaction rate is too high is avoided. And the deep transformation of the acid liquid in the reservoir is realized under the clamping of a low acid rock reaction rate. And by means of the high resistance reduction capacity after weight increasing, it is guaranteed that the construction operation pressure is reduced in the deep well and ultra-deep well reservoir transformation process, and therefore the efficient reservoir transformation capacity is achieved.

The present invention provides a cyclic carbonate synthesis method, and belongs to the technical field of organic ester compound synthesis, and the cyclic carbonate synthesis method comprises the following steps: S1, 1, 3-propylene glycol, a dehydrating agent and a catalyst are added into a high pressure reaction kettle, and CO2 is introduced into the high pressure reaction kettle for a reaction; s2, after the reaction is finished, after the high-pressure reaction kettle is cooled to the room temperature, redundant gas in the high-pressure reaction kettle is discharged, after the gas in the high-pressure reaction kettle is completely discharged, the high-pressure reaction kettle is opened, the catalyst is filtered out, and the solution is subjected to vacuum-pumping separation to obtain a target product; the catalyst is a heterogeneous catalyst MxOy (at) Zn-dpot. Carbon dioxide conversion is carried out in a chemical utilization mode, a chemical product trimethylene carbonate can be produced, the synthesis route is easy to operate, and after the MxOy at Zn-dpot catalyst is added, the yield is high, the high additional value is achieved, and the green chemistry concept is met.

The invention belongs to the technical field of lithium ion battery additive materials, and particularly relates to a high-compaction dispersion material and a preparation method thereof, and a high-compaction flexible positive pole piece, the high-compaction dispersion material comprises the following components by mass: 30-40 parts of a component A, 5-10 parts of a component B, 5-10 parts of a component C, and 40-60 parts of a solvent; wherein the component A comprises an unsaturated cyclic monomer, unsaturated polyether and a solution polymerization copolymer of an amine-containing monomer and a (methyl) acrylate monomer; the component B comprises a long-chain amine substance; the component C comprises organic ester; the high-compaction dispersion material, the preparation method thereof and the high-compaction flexible positive pole piece have the advantages of being excellent in dispersion performance, outstanding in softening effect, remarkable in pole piece compaction density improvement and the like, can have the two functions of dispersion and compaction improvement, reduces the production cost, improves the pole piece yield and has a good application prospect.

The invention provides a preparation method of organic silicon hybridized acrylate pressure-sensitive glue and a pressure-sensitive adhesive tape, and relates to the technical field of adhesives. (methyl) acrylate organic silicon monomers with higher copolymerization reaction activity with acrylate and other (methyl) acrylate soft monomers, hard monomers, functional monomers and the like are subjected to copolymerization reaction; introducing a monomer containing an organic silicon side chain to a polymer main chain to obtain an organic silicon hybridized acrylate main glue solution; and mixing the organic silicon hybridized acrylate main glue solution with an organic silicon flexible cross-linking agent, a tackifier, an antioxidant and other additives to obtain the organic silicon hybridized acrylate pressure-sensitive glue. The main component of the adhesive layer of the pressure-sensitive adhesive tape prepared from the organosilicone hybridized acrylate pressure-sensitive adhesive is an acrylate polymer into which a large proportion of organosilicone groups are introduced, so that the wettability of the adhesive layer of the pressure-sensitive adhesive tape to a silicon-based substrate is better, and the adhesion of the adhesive tape to the substrate is improved.

The invention discloses a sodium-ion battery flame-retardant electrolyte with high cycle stability and a preparation method thereof, and the sodium-ion battery flame-retardant electrolyte comprises the following components in percentage by mass: 70-75% of an organic ester solvent, 8-12% of sodium salt, 2.5-3.5% of triethyl phosphate, 4.5-5.5% of ionic liquid loaded powder and 5-10% of a sulfur-containing additive, the prepared sodium-ion battery flame-retardant electrolyte is good in conductivity, the prepared sodium-ion battery is high in cycling stability and good in flame retardance, the flame retardance of the flame-retardant electrolyte is improved through compounding of the Zn-MOF and the modified carbon black, the conductivity of the electrolyte is improved through the Zn-MOF and the ionic liquid in the Zn-MOF, and the prepared ionic liquid powder is high in stability and good in flame retardance. The dispersity in a carbonic ester solvent is good.

The invention provides a sodium-ion battery electrolyte, a battery, a battery pack and electric equipment, the sodium-ion battery electrolyte comprises a first additive and a second additive, the first additive is a non-sodium metal cation compound, the second additive is a halogenated organic ester compound, and the second additive is a non-sodium metal cation compound. Halogen atoms in the second additive comprise at least one of chlorine, bromine and iodine. Under the synergistic effect of the first additive and the second additive, the sodium-ion battery electrolyte provided by the invention can significantly reduce impedance and improve cycle stability.

The invention discloses a sodium metal battery high-voltage fast-charging electrolyte and a preparation method and application thereof, and belongs to the technical field of sodium metal batteries. The electrolyte comprises a sodium salt, an organic ester and linear ether hybrid solvent, the volume ratio of the organic ester solvent to the linear ether solvent in the electrolyte is (3-5): (5-7), and the concentration of the sodium salt is 0.5-1.5 mol L; the organic ester solvent is fluoroethylene carbonate (FEC); the linear ether solvent is one or two of diethylene glycol dimethyl ether (DEGDME) and tetraethylene glycol dimethyl ether (TEGDME); and injecting the electrolyte into the sodium metal battery to obtain the high-voltage sodium metal battery. The high-voltage fast-charging electrolyte provided by the invention has a 5V electrochemical window, a sodium fluoride-rich solid electrolyte membrane with high ionic conductivity and strong mechanical property is formed in situ in the charging and discharging process, and continuous decomposition of a solvent can be inhibited, so that the energy density and the cycling stability of a battery are remarkably improved, and the fast-charging performance of the sodium metal battery is met.

The invention discloses a double-layer composite structure cable sheath and a preparation method thereof, and belongs to the technical field of cable sheath materials. The invention relates to a preparation method of a cable sheath with a double-layer composite structure. The preparation method comprises the following steps: uniformly mixing polyvinyl chloride, an organic ester compatilizer and a metal salt stabilizer to obtain a PVC mixture; caprolactam is subjected to ring opening treatment and then subjected to copolymerization with adipic acid and polyether amine, and modified nylon 6 is obtained; uniformly mixing the modified nylon 6, an aliphatic diester lubricant and an amine stabilizer to obtain a nylon mixture; the cable core passes through a co-extrusion die head, the PVC mixture and the nylon mixture wrap the cable core from inside to outside in a melt co-extrusion mode, and after shaping, the cable sheath of the double-layer composite structure is obtained. The problems of layering, bubbles, poor interface bonding force and the like in combined processing of the nylon layer and the PVC layer are solved. And the obtained cable sheath has high toughness, bending resistance and fluidity.

The invention provides a controlled release method of a low-additive-amount coal-based quantum carbon dot composite coated slow-release fertilizer, and relates to the technical field of slow-release fertilizers, the controlled release method comprises the following steps: S1, carrying out surface functional modification on coal-based quantum carbon dots, grafting amino and carboxyl on the surfaces of the coal-based quantum carbon dots, and forming molecular-level crosslinking points capable of being subjected to dual crosslinking with inorganic silicon-oxygen bonds and organic ester bonds; s2, sequentially wrapping a basic controlled release shell layer formed by biodegradable polyester and an intelligent response layer embedded with the coal-based quantum carbon dots by taking fertilizer particles as a core through a layer-by-layer spraying and fluidized bed coating process to form a composite coating structure; the coal-based quantum carbon dots subjected to surface functionalization modification serve as molecular-level crosslinking points under the extremely-low addition amount of 0.1-1 wt%, the molecular-level crosslinking points, inorganic silicon-oxygen bonds and organic ester bonds form a double-crosslinking network, the compactness and stability of a coating layer are remarkably improved, and therefore the raw material cost and processing energy consumption are reduced, and green manufacturing is achieved.

The invention relates to the field of sodium ion battery energy storage, and provides a long-circulation electrolyte for a sodium ion battery and a preparation method thereof, and the long-circulation electrolyte comprises an organic ester solvent, a solute and an additive. The solute is a sodium salt with the concentration of 0.5-2.5 M; the solvent is a carbonic ester and / or ether mixed solution and an additive with the mass fraction of 0.1-25%. The electrolyte can form a stable solid electrolyte interface (SEI) on the surface of an electrode, so that the electrochemical performance of a battery is improved, meanwhile, the ionic conductivity of the electrolyte in a wide temperature range can be remarkably improved, and the electrochemical window of the electrolyte is effectively widened. The electrolyte can be applied to a sodium-ion battery system taking Prussian blue as a positive electrode, and the cycle performance of the sodium-ion battery system is remarkably improved.

The invention provides a low-temperature curing agent material of quartz sand for fuses and a curing process, and relates to the technical field of fuses, the low-temperature curing agent material comprises a functional phase, a hardening agent and a coating phase, the functional phase is a water glass solution prepared by taking at least one of alkali metal silicate as a main component, and the addition amount of the functional phase accounts for 75-92 wt% of the material; the hardening agent is at least one of organic esters; the compactness, compressive strength, toughness and the like of the cured quartz sand filler are improved through different curing agent system designs, different hardening mechanisms, enhancement modes, hydrophilic improvement and other modes, on one hand, expansion of an electric arc channel when a metal melt is broken under high voltage and large current can be reduced, and the post-arc time and electric arc energy are reduced; on the other hand, the erosion effect of moisture and other substances in the environment on the quartz sand filler in the long-term use process of the product can be reduced, and the long-term use reliability of the fuse product is improved.

The present invention provides a cyclic carbonate synthesis method, and belongs to the technical field of organic ester compound synthesis, and the cyclic carbonate synthesis method comprises the following steps: S1, 1, 3-propylene glycol, a dehydrating agent and a catalyst are added into a high pressure reaction kettle, and CO2 is introduced into the high pressure reaction kettle for a reaction; s2, after the reaction is finished, after the high-pressure reaction kettle is cooled to the room temperature, redundant gas in the high-pressure reaction kettle is discharged, after the gas in the high-pressure reaction kettle is completely discharged, the high-pressure reaction kettle is opened, the catalyst is filtered out, and the solution is subjected to vacuum-pumping separation to obtain a target product; the catalyst is a heterogeneous catalyst M < 1 > < x > M < 2 > < y > O < z > (at) Bi-TDPAT. According to the invention, carbon dioxide conversion is carried out in a chemical utilization manner, a chemical product trimethylene carbonate can be produced, the synthesis route is easy to operate, and after the M1xM2yOz-Bi-TDPAT catalyst is added, the yield is high, the added value is high, and the green chemistry concept is met.

The application belongs to the technical field of organic ester, and particularly relates to a Ti / Zr-Si porous catalyst, a preparation method thereof and a catalytic esterification method. The application introduces an organic acid source in a system for preparing a molecular sieve, and a core-shell type heterogeneous esterification catalyst material with titanium / zirconium in a tetra-coordination framework as a core and titanium / zirconium in a penta / six-coordination as a shell is prepared by combining the porous molecular sieve with a binder precursor. The catalyst contains abundant secondary pores in the molecular sieve crystals and between the binders, which effectively improves the esterification reaction performance and activity stability of the catalyst.

The application relates to the technical field of insulators, and discloses a high-strength light insulator and a preparation method thereof. The high-strength light insulator comprises a core rod and a fitting on both ends of the core rod, an umbrella skirt sheath is injected on the outer surface of the core rod, and the raw material of the core rod comprises glue and glass fibers; the glue comprises the following raw material components in parts by weight: 100 parts of bisphenol A epoxy resin, 70-80 parts of a curing agent, 1-2 parts of an accelerator and 5-8 parts of a filler; and the curing agent comprises an alicyclic anhydride curing agent, an alicyclic amine curing agent and a multi-sulfydryl organic ester compound. The above technical scheme solves the problem of insufficient strength of the light insulator in the related art.

The utility model relates to a device for rectifying and dehydrating an organic ester curing agent, which comprises a rectifying tower, a tower body of the rectifying tower consists of a plurality of cylindrical tower sections, each tower section comprises a barrel, and an upper flange and a lower flange are respectively formed at two ends of each barrel. The upper flange of the tower section on the lower side layer is fixedly connected with the lower flange of the tower section on the adjacent upper layer through a bolt; a heat insulation sleeve with a U-shaped section is fixedly connected to the portion, between the upper flange and the lower flange, of the cylinder in an inserted and sleeved mode, an annular heat insulation cavity is defined by the heat insulation sleeve and the cylinder, a spiral flow guide partition plate is inserted into the heat insulation cavity, the outer ring of the flow guide partition plate abuts against the inner wall of the heat insulation sleeve, and the inner ring of the flow guide partition plate is fixedly connected to the outer wall of the cylinder; the heat insulation cavity is divided into a spiral flow channel by the flow guide partition plate. According to the device, the spiral runners are arranged on the outer sides of the tower sections, and the runners between the adjacent tower sections are communicated through the paired connecting pipes, so that the outer sides of the spliced rectifying tower can be spliced to form a heat preservation structure.

This invention relates to a method for preparing a low-density cement slurry antifouling agent, comprising the following steps: 1. Raw material preparation: weighing a predetermined weight of organophosphonic acid, organic ester, and initiator; 2. Organophosphonic acid solution preparation: dissolving the weighed organophosphonic acid in water, heating to a predetermined temperature, and adjusting the pH value of the solution to a predetermined value; 3. Antifouling agent preparation: adding the weighed initiator to the organophosphonic acid solution, dissolving it, then adding the weighed organic ester, stirring to dissolve, subsequently cooling the solution, and adjusting the pH value to neutral to obtain the antifouling agent. The advantages of this invention are: the preparation method is simple; the obtained low-density cement slurry antifouling agent, when added to cement slurry, can react with cement hydration products, preventing drilling fluid from contaminating the cement slurry, improving the antifouling ability of the cement slurry; the application method is convenient, simplifying the cementing process and reducing the cost per well.

The invention discloses a preparation method of a low-viscosity toughening asphalt modifier, which comprises the following steps: 1) adding an organic ester compound, a vulcanizing agent, an accelerant, a polymer elastomer and an anti-aging agent into a reaction kettle, uniformly mixing at a rotating speed of 2000-3000r, and carrying out heating reaction to obtain a mixture; and 2) shearing and dispersing the mixture at a shearing rate of 3000-4000 r / min for 0.5-1 h, cooling, and standing to obtain the asphalt modifier. According to the low-viscosity toughening asphalt modifier provided by the invention, the accelerant enhances cohesive energy of the organic ester compound through vulcanization at high temperature, and synergistic viscosity reduction and toughening of a polymer elastomer are realized; a high-frequency stirring and shearing dispersion process is combined, part of covalent bonds in the chemical structure of the polymer elastomer in the system are broken to form a uniformly dispersed liquid mixture, the molecular weight of the mixture is smaller than that of the original elastomer, and reduction of the molecular weight is beneficial to reduction of the viscosity of the material.

The present invention belongs to the technical field of organic ester preparation, and in particular to a kind of Ti / Zr-Si porous molecular sieve and its preparation method and catalytic esterification method, the preparation method comprises the following steps: (1) silicon source, titanium source, zirconium source, structure directing agent, water are mixed, and heated hydrolysis dispersion is obtained under normal pressure to obtain precursor gel I, and organic acid source is added to precursor gel I to obtain precursor gel II; (2) precursor gel II is transferred to reactor, hydrothermally reacted under autogenous pressure, and finally cooled, depressurized, filtered, dried and roasted to obtain Ti / Zr-Si porous molecular sieve. The present invention can improve the diffusion performance in molecular sieve crystal, improve the accessibility of active centers in molecular sieve crystal, and regulate the amount of Lewis acid produced by surface hydroxyl groups by introducing organic acid source in molecular sieve preparation system. Therefore, catalytic efficiency and catalytic stability when using Ti / Zr-Si porous molecular sieve catalytic esterification reaction are effectively improved.

This invention provides a degradation process for composite polyester materials, relating to the field of polyester recycling technology. The degradation process involves depolymerizing a reaction system comprising at least raw material components (i) composite polyester material, (ii) organic ester compounds, (iii) a co-solvent, and (iv) an alkaline catalyst at a temperature not exceeding 100°C; the weight ratio of the co-solvent to the organic ester compound is ≥0.5. By adding a certain amount of co-solvent to the depolymerization system, this invention achieves directional depolymerization of polyester-containing composite polyester materials while essentially preventing depolymerization of other materials, such as spandex and nylon.

The present application relates to the technical field of liquid light valve, especially to a low-voltage driven liquid light valve and a preparation method thereof. The low-voltage driven liquid light valve comprises a first transparent electrode, a light-adjusting liquid and a second transparent electrode arranged in sequence. The light-adjusting liquid comprises light-adjusting particles, a suspension, a dispersing agent and an organic solvent. The dispersing agent is PVP. The present application further discloses a preparation method of the low-voltage driven liquid light valve, comprising the following steps: preparing light-adjusting particles; preparing a suspension; dissolving PVP in an organic solvent at a certain temperature; mixing the light-adjusting particles with the organic ester solution of PVP, and then mixing with the suspension to obtain the light-adjusting liquid; filling the light-adjusting liquid between the first transparent electrode and the second transparent electrode, and sealing. The liquid light valve prepared by the present application can be driven at low voltage, has fast response speed, short recovery time and good repeatability, and uses PVP which is stable at normal temperature and pressure as the dispersing agent, so the safety is good.

Methods and compositions involving certain organic esters that release an organic acid for use in the subterranean formation are provided. In some embodiments, the methods include: providing a treatment fluid including an aqueous base fluid and at least one organic ester that includes at least one electron withdrawing group selected from the group consisting of F, Cl, Br, I, NO2, a vinyl group, an acetylenic group, an aromatic group, a carbonyl group, an alkoxyl group, a cyano functional group (C≡N), and any derivative thereof; and introducing the treatment fluid into at least a portion of a wellbore penetrating at least a portion of a subterranean formation.

The present application relates to a kind of iron ore room temperature flotation ester base carboxylic acid collector and its synthesis method and application, and collector structure is organic ester base carboxylic acid compound.The collector is obtained by the reaction of alkyl alcohol and diacid or acid anhydride compound, preparation method: the molar ratio of alkyl alcohol and diacid or acid anhydride compound is 1:1.0~5.0, reaction temperature is 20 ℃~40 ℃, in dichloromethane solvent 2 h~12 h, obtain iron ore room temperature flotation anion collector.The organic ester base carboxylic acid collector of the present application can replace fatty acid or be mixed as iron ore room temperature flotation anion collector.

The invention relates to a synthetic method of bio-based poly (butylene succinate), which comprises the following steps: taking bio-based succinic acid and 1, 4-butanediol as polymeric monomers, and synthesizing the bio-based poly (butylene succinate) through esterification, pre-polycondensation and final polycondensation, during esterification, a compound catalyst is added; during final polycondensation, a stabilizer and a lubricant are added; the compound catalyst comprises a mixture of titanium organic ester, an antimony compound, silicon organic ester, hydroxycarboxylic acid and 1, 4-butanediol. According to the synthesis method provided by the invention, the hue of the product is greatly improved, meanwhile, the product with a relatively low melt index can be obtained, and the application range is relatively wide.

The invention relates to the field of casting, in particular to an organic ester hardened sodium silicate sand composite core making process, which is characterized in that the mass ratio of core sand to sodium silicate to organic ester in a liquid material for making a core by using organic ester hardened sodium silicate sand is 100: (1.5-2): (0.15-0.25); after sand filling of the liquid material is completed, a plurality of carbon dioxide channels are formed through pricking; and placing the core box in a carbon dioxide environment for 30-40 seconds, waiting for 2-3 minutes in an air environment, and overturning and drawing. According to the invention, the liquid material is prepared according to a proper proportion, so that the liquid material can be quickly overturned and drawn when being placed in a carbon dioxide environment in a film preparation process, and the quality of a hardened core film meets the requirements.

The invention discloses a sand core for cast steel with high collapsibility and high deformability and a preparation method, and relates to the technical field of sand core casting. The back sand body is an organic ester water glass limestone self-hardening sand supporting body which is prepared by mixing 96.2%-97.9% by mass of limestone sand, 1.9%-2.9% by mass of modified water glass and 0.2%-0.9% by mass of organic ester I; and the surface sand layer is an alkali phenolic resin chromite sand shell layer which is formed by mixing 96.6%-98.4% by mass of chromite sand, 1.4%-2.5% by mass of alkali phenolic resin and 0.2%-0.9% by mass of organic ester II according to a certain proportion and coating the outer part of the back sand body. The high-collapsibility and high-deformability sand core is prepared by using the alkali phenolic resin chromite sand as the facing sand and the organic ester water glass limestone self-hardening sand as the backing sand, so that the crack tendency of a casting can be reduced, the collapsibility of the sand core is improved, the sand cleaning difficulty is reduced, and the quality of the inner surface of the casting is improved.

The invention relates to the technical field of insulators, and provides a novel high-strength light insulator and a preparation method thereof. A novel high-strength light insulator comprises a core rod and fittings inserted into the two ends of the core rod, an umbrella skirt sheath is injected to the outer surface of the core rod, raw materials of the core rod comprise a sizing material and glass fibers, and the sizing material comprises, by weight, 100 parts of bisphenol A epoxy resin, 70-80 parts of a curing agent, 1-2 parts of an accelerant and 5-8 parts of filler; the curing agent comprises an alicyclic anhydride curing agent, an alicyclic amine curing agent and a polymercapto organic ester compound. According to the technical scheme, the problem of insufficient strength of a light insulator in the prior art is solved.

The utility model relates to a synthesizing device of an organic ester curing agent for casting, which comprises a mixing drum for synthesizing the curing agent, a stirring paddle is inserted into the mixing drum and comprises a horizontal transverse rotating arm, and the left end of the rotating arm is positioned in the middle of the mixing drum and is provided with a shaft hole; a connecting shaft sleeve communicated with the shaft hole is formed on the upper end face of the left end of the rotating arm, a horizontal fixed gear is connected to the connecting shaft sleeve through a bearing, the upper end of the connecting shaft sleeve extends out of the fixed gear and is fixedly connected with a limiting sleeve in an inserted and sleeved mode, a plurality of vertical connecting columns are fixedly connected to the fixed gear on the periphery of the limiting sleeve in an inserted mode, and the upper ends of the connecting columns are fixedly connected with the stirring barrel. The stirring paddle in the synthesis device is provided with the two rotating stirring shafts, the two stirring shafts are respectively arranged at the center of the stirring barrel and one side of the barrel wall of the stirring barrel, and the stirring shaft at one side of the barrel wall can revolve around the stirring shaft at the center, so that materials in the stirring barrel are fully stirred; the materials are uniformly mixed.

This invention relates to the field of adsorption separation technology, specifically to an adsorbent for selectively adsorbing organic esters from industrial wastewater and its preparation method. The adsorbent contains polar functional groups capable of adsorbing organic esters and does not contain hydroxyl or carboxyl groups; the adsorbent's adsorption capacity for organic esters is not less than 12% of its total weight, and the density of the adsorbent is 0.5-1.2 g·cm³. ‑3 The adsorbent of this invention contains abundant polar functional groups, exhibiting strong selectivity for organic esters. This effectively avoids competitive adsorption of other molecules in the solution at the active sites, thus improving the purity of the recovered product. Under high liquid hourly space velocity (HLH), the adsorbent of this invention can purify the concentration of organic esters in the solution to below 1000 ppm.

The invention relates to the technical field of precursor oiling agents, and discloses an organosilicon carbon fiber precursor oiling agent and a preparation method thereof, and the organosilicon carbon fiber precursor oiling agent comprises the following raw materials by weight: 10-12 parts of functionalized polysiloxane; 5-7 parts of co-modified silicone oil containing three modified groups of quaternary ammonium salt, alkyl and amino; 8-10 parts of heat-resistant organic ester; 3-6 parts of a biodegradable emulsifier; 2-4 parts of an environment-friendly antistatic agent, wherein the environment-friendly antistatic agent comprises modified sorbitan fatty acid ester; 1-2 parts of an antioxidant; 0.5-2 parts of a polymer reinforcing agent; and 0.5-1 part of a pH stabilizer. The affinity of the oiling agent and the carbon fibers and the high temperature resistance of the carbon fibers are remarkably improved in the mode that multifunctional groups such as amino groups and phenyl groups are introduced into the functionalized polysiloxane.