178 results about "Phenylsilane" patented technology

Methods are provided for depositing a doped barrier layer material having a low dielectric constant. In one aspect, the invention provides a method for processing a substrate including depositing a barrier layer on the substrate by introducing a processing gas comprising an organosilicon compound, at least one dopant containing gas, hydrogen gas, and, optionally, an inert gas into a processing chamber, reacting the processing gas to deposit the barrier layer, and depositing a first dielectric layer adjacent the barrier layer. The organosilicon compound may comprise a phenylsilane containing compound or an aliphatic organosilicon compound. The processing gas may further comprise an oxygen containing compound, a nitrogen containing compound, or both.

A polyaryl thioether sulfone is disclosed, which has the characteristic viscosity for its solution of 0.15-0.54, the vitrification temp higher than 210 deg.C, the thermal deformation temp higher than 180 deg.C and thermal decomposing temp higher than 480 deg.C and thermal decomposing temp higher than 480 deg.C. Its preparing process features that the halogenated aryl compound is added to the reaction system of Na2S.xH2O and bichlorodiphenyl sulfone, and composite catalyste and assistant are used.

The invention relates to the field of synthesizing technology in organic chemical engineering, in particular to a method for directly preparing methyl phenyl cyclosiloxane through hydrolyzing dichloromethyl phenylsilane in a multiphase solvent. The method comprises the steps of mixing the dichloromethyl phenylsilane with aromatic hydrocarbon, dripping the mixture into a mutually mixed multiphase mixed solvent system, stirring, carrying out hydrolysis reaction at a temperature of 0-30 DEG C, continuing the reaction for 2-4 h after dripping is finished, and removing the solvent by evaporation to obtain the methyl phenyl cyclosiloxane and linear polymethyl phenyl siloxane product. The invention can realize no pollutant discharge, reduce generation of useless reaction byproducts and improve the product yield rate. The invention is widely used in the production field.

The invention discloses mercaptopropyl polysiloxane with photoreaction activity and a preparation method thereof. Mercaptopropyl polysiloxane is polysiloxane molecules containing mercaptopropyl chain segments, phenyl chain segments and dialkyl chain segments. The preparation method of mercaptopropyl polysiloxane comprises the steps that hexamethyldisiloxane and silane with different substituent groups are subjected to a cohydrolysis-polycondensation reaction under the acidic condition to generate mercaptopropyl polysiloxane. Silane with different substituent groups is a mixture of mercaptopropyl silane, phenyl silane and dialkyl silane or tetramethoxysilane, prepared mercaptopropyl polysiloxane, silicone rubber, epoxy resin, acrylate resin and other materials can have good compatibility by controlling and adjusting the relative content of the mercaptopropyl chain segments, the phenyl chain segments and the dialkyl chain segments, mercaptopropyl polysiloxane can be used for cross-linking and curing of the materials, an optically transparent composite is prepared, the mechanical performance of the material can be improved, the photocuring reaction speed is high, and mercaptopropyl polysiloxane can be used for the fields of electronic packaging materials, optical materials, 3D printing consumables and the like.

The invention discloses a method for preparing hydroxyl-terminated phenyl amino polyether modified silicone oil. The method comprises the following steps: preparing polyether modified amino silane by using amino silane and alkyl epoxy polyether; and preparing the silicon oil by the polyether modified amino silane, phenylsilane and octamethylcyclotetrasiloxane in the presence of a catalyst. Compared with the prior art, phenyl silane, polyether modified amino silane and octamethylcyclotetrasiloxane are synthesized into a brand-new hydroxyl-terminated phenyl polyether modified silicone oil through a polymerization balanced reaction. The microemulsion type softener emulsified by the silicone oil is soft and smooth in hand feel and excellent in yellowing resistance and temperature resistance when used for finishing textiles; the product is good in stability of shear force, centrifugal force, electrolyte, hard water and the like, and is particularly suitable for surface treatment of polyester fibers.

The invention provides a preparation method of aerospace hyperbranched polysiloxane polyimide transparent hybrid thin films. The method comprises the following steps: carrying out hydrolytic condensation on two monomers: phenyl-containing silane and aminopropyl-containing silane in a strong polar aprotic solvent system; vacuumizing to remove micromolecular volatile matters generated by the reaction to obtain amino-containing hyperbranched polysiloxane; modifying a polyimide material by the amino-containing hyperbranched polysiloxane to prepare polyimide containing an HBPSi (Hyperbranched Polysiloxane) structure; and through thermal imidization, obtaining a series of hyperbranched polysiloxane polyimide transparent hybrid thin films (HBPSI-PI). The reaction condition for synthesizing the HBPSi is mild and the cost is low. Furthermore, the HBPSi structure is finally introduced to main chains of polyimide molecules by way of chemical bonds, so that the material is endowed with excellent intrinsic atomic oxygen resistance and good light permeability. The HBPSi-PI hybrid thin films are excellent in comprehensive performance, low in preparation cost, and suitable for industrial production.

The invention relates to a preparation method of methyl phenyl silicone oil with high refractive index, and belongs to the technical field of organosilicon synthesis. The method is as below: using dimethyl dichlorosilane, diphenyl dichlorosilane and dichloromethyl phenylsilane as polymerization monomers; adding the monomers into a solvent while stirring at 30 DEG C; uniformly stirring; dropwise adding a proper amount of a hydrolysate; continuing to react until the end of hydrolysis; standing for layering; separating out a lower layer of acid water; washing an upper layer organic phase to a neutral state to obtain a siloxane prepolymer; adding a proper amount of an end-capping reagent and a condensation catalyst into the siloxane prepolymer to carry out a condensation reaction; after the reaction, washing out the catalyst to a neutral state; and steaming out the solvent of xylene and low-boiling-point substances under reduced pressure to obtain the silicone oil. The methyl phenyl silicone oil prepared by the invention is a clarified transparent oily liquid with high refractive index, good product uniformity, high purity and good high temperature resistance; and the preparation technology is simple and easy for industrialization.

The present invention provides a novel process for the conversion of alpha,beta-unsaturated ketones. This invention is an improvement over existing processes in that it operates at neutral reaction conditions that prevent the formation of side reactions and that it is a single step, which proceeds with complete selectivity and gives a yield that is approximately 30% higher than the currently used processes. An example of this process is the conversion of 16-dehydroprogesterone into 17 alpha-hydroxyprogesterone.

The invention discloses a fluorine-containing phenyl hydrogen-containing siloxane monomer and a preparation method thereof. The method comprises the following steps of: reacting dialkoxychlorosilane with a 3,5-bis(trifluoromethyl)phenyl Grignard reagent and a p-fluorophenyl Grignard reagent respectively to obtain 3,5-bis(trifluoromethyl)phenylsilane and p-fluorophenyl dialkoxy silane (wherein the alkoxy R=-OMe, -OEt, -OP(r-i) and the like); or reacting trichlorosilane with a 3,5-bis(trifluoromethyl)phenyl Grignard reagent and a p-fluorophenyl Grignard reagent respectively to obtain 3,5-bis(trifluoromethyl)phenyldichlorosilane and p-fluorophenyl dichlorosilane. A specific experimental process is provided by taking the synthesis from 3,5-bis(trifluoromethyl)phenyldiethyoxysilane and p-fluorophenyl diethyoxysilane for example, and the monomer is subjected to FT-IR and <1>H-NMR representation; and finally, high-temperature-resistant hydrophobic oil-proof characteristic polysiloxane capable of conducting a silicon-hydrogen addition reaction with an unsaturated bond is obtained.

The invention belongs to the technical field of the analytical chemistry and in particular discloses a valganciclovir hydrochloride impurity HPLC (High Performance Liquid Chromatography) analytical detecting method, and more specifically, the invention relates to a method for analytically detecting guanine, ganciclovir, methoxymethylguanine, ganciclovir 1-N-methyl-valine, mono acetoxyl ganciclovir, mono chloro ganciclovir or a medicine or a preparation containing the above six impurities. A solution to be detected is filled in a high performance liquid chromatographic column taking phenylsilane bonded silica gel as a filling agent, a moving phase prepared by an amine-containing aqueous inorganic salt solution and a chromatographically pure organic solvent is adopted to wash and separate, and then ultraviolet analysis and detection is carried out. According to the method, ammonium acetate or ammonium formate with certain concentration is firstly added in the moving phase creatively, and difficult problems that the main peak and the impurity peak and the adjacent impurity peaks are separated difficultly are thoroughly solved, the operation is simple, the separation degree is high, the sensitivity is high, the accuracy is good, and no similar literature is reported through literature retrieval.

The invention discloses a high-strength abrasion-resistant composite packaging material and a preparing method thereof. The high-strength abrasion-resistant composite packaging material is prepared from, by weight, 50-80 parts of chlorinated butyl rubber, 30-50 parts of polyvinyl chloride resin, 10-22 parts of nanocarbon fiber, 2-8 parts of aziridine crosslinking agent, 7-16 parts of trimethylolpropane, 4-9 parts of nano-graphite, 1-5 parts of zinc oxide, 6-11 parts of silicon dioxide, 10-18 parts of polyvinyl alcohol, 10-20 parts of metallocene polyethylene, 6-13 parts of polyisobutene, 3-9 parts of attapulgite, 7-15 parts of acrylic acid, 4-11 parts of quartz sand, 7-14 parts of graphene, 3-9 parts of sodium melamine phosphate, 3-7 parts of abrasion-proof agent, 5-12 parts of phenylsilane, 15-30 parts of tetramethoxy silicane and 10-23 parts of ethylene-zinc alkene copolymer. Compared with the prior art, the packaging material has the advantages of being high in strength and abrasion resistance, long in service life and capable of meeting requirements of industrial production better.

The invention discloses a preparation method of octaphenyl silsesquioxane. The preparation method comprises the steps of firstly, placing a reactor into an ice-water bath, adding a mixed solution of an organic solvent and deionized water into the reactor, and then, adding phenylsilane; then, starting to stir to carry out hydrolysis reaction for 20-60 minutes, then, standing, washing an organic phase, and drying to obtain a precursor hydrolysis product; adding the precursor hydrolysis product into an original reaction vessel, then, adding a mixture of a catalyst and a solvent into the original reaction vessel, and carrying out backflow reaction at the temperature of 20-250 DEG C for 5-100 hours to separate out a great number of white sediments; and then, purifying in a way of filtering, washing or dissolving and re-crystallizing the sediments, and drying to obtain octaphenyl silsesquioxane. According to the preparation method, octaphenyl-functionalized POSS with relatively high molecular weight and relatively high yield is controllably prepared by taking phenylsilane as a raw material through a low-temperature feeding and two-step hydrolysis process; in addition, the preparation process is simple, the yield is relatively high, and the preparation period is short.

The invention provides a preparation method of high-purity diiodosilane, and relates to the field of preparation of inorganic compounds. The preparation method of the high-purity diiodosilane comprises the following steps: under the protection of inert gas, with ethers as a solvent, performing a reaction on lithium aluminum hydride with phenyl dichlorosilane to prepare a phenylsilane mixture; heating the phenylsilane mixture for evaporating out phenylsilane, and collecting the phenylsilane; by controlling the reaction temperature to be -80 DEG C to 30 DEG C, dropwise adding the collected phenylsilane into the powdery iodine elementary substance under the stirring condition, meanwhile, adding an oxygen-containing organic compound as a catalyst, and performing a reaction to obtain a diiodosilane mixture; raising the temperature of the diiodosilane mixture to distill the crude diiodosilane. According to the preparation method of the high-purity diiodosilane provided by the invention, theinitial raw material is the non-toxic material phenyl dichlorosilane, and compared with the traditional highly toxic chemical phenyl trichlorosilane as the initial raw material, the safety of the process is greatly improved.

The invention relates to a preparation method for high-purity methylphenyl-dimethoxysilane. The preparation method is characterized in that high-purity methylphenyl-dimethoxysilane is prepared through four-step deacidification. The method comprises the following steps: 1) adding dichloromethyl phenylsilane and a hydrogen chloride absorbent into an alcoholysis enclosed agitation reactor, then slowly adding a mixed liquor of absolute methanol and a catalyst drop by drop, controlling a certain reaction temperature, carrying out reflux deacidification at a certain temperature after completion of dropwise addition, carrying out filtering after complete reaction so as to obtain a crude methylphenyl-dimethoxysilane product and recovering the tail gas--hydrogen chloride gas by using a falling film absorption system for preparation of hydrochloric acid; and 2) adding the crude methylphenyl-dimethoxysilane product into a self-made gradient high-efficiency rectifying tower bottom, controlling rectification temperature for fractionation and recovery of methanol and adjusting a reflux ratio to rectify high-quality methylphenyl-dimethoxysilane with quality reaching an international advanced level. The preparation method for methylphenyl-dimethoxysilane has the advantages of environment friendliness, cyclic utilization of resources, stable process, simple operation and product purity of more than 99.5%.

The invention discloses an insulating varnish and a preparation method thereof, belonging to the technical field of paints. The invention mainly overcomes the technical problem that a conventional insulating varnish does not have ideal insulating properties under the condition of high temperature. The insulating varnish comprises, by weight, 3 to 5.1% of dichloromethyl phenylsilane, 4 to 6.9% of monophenyltrichlorosilane, 2 to 3.5% of diphenyltrichlorosilane, 0.01 to 0.02% of zinc octoate and 20 to 30% of xylene, with the balance being tap water. The preparation method for the insulating varnish comprises the following steps: hydrolysis; washing; concentration; condensation; etc. The insulating varnish provided by the invention has a high insulation grade, strong high temperature resistance and a wide application scope.

The invention discloses a polysiloxane low polymer with a side epoxy group and a preparation method thereof. The method comprises the steps of: firstly mixing gamma-chloropropyl methyl dialkoxysilane and phenyl trialkoxysilane with methylbenzene, heating to 85-90 DEG C, dropping diluted hydrochloric acid for reaction for 5-8h, adding end-capping agent for continuous reaction and cooling to obtain polychloropropyl phenylsilane methylbenzene solution; then bisphenol A sodium salt or kali salt solution into the polychloropropyl phenylsilane methylbenzene solution, adding phase transfer catalysts and heating for reaction for 4-6h; and adding epoxy chloropropane for reaction, cooling, separating, removing water layers and methylbenzene and drying in vacuum to obtain the polysiloxane low polymer with the side epoxy group. The polysiloxane low polymer with the side epoxy group has a good thermal and oxidative stability, is flame-retardant, can be used as compatilizer for the blending systems of high-molecular materials, can introduce the high-temperature and low-temperature resistance, the flame retardance and the like of polysiloxane structures and is adaptive to comparatively high processing temperature.

The invention belongs to field of analytical chemistry, and specifically relates to a method for separating and measuring ezetimibe and relevant substances through high performance liquid chromatography. According to the method, during an analysis process of high performance liquid chromatography, an adopted chromatographic column takes phenylsilane bonded silicone as a filler, and takes a solution A and an organic solution B as a moving phase, wherein the solution A and the organic solution B are according to a certain ratio, for elution. The solution A is an aqueous acid, or a mixed solution of acetonitrile and methanol. The method is suitable for six relevant substances of ezetimibe and is used for separating and measuring one or several relevant substances at the same time. In comparison with the prior art, the efficiency of separation and detection is improved. By using the method, alkaline degradation impurities of ezetimibe are detected, and the six relevant substances are accurately effectively separated from other degradation impurities. A raw material of ezetimibe is accurately guaranteed; the quality of a preparation of ezetimibe is controllable; and safety and effectiveness of the final product is ensured.

The invention discloses a hydroxyl-terminated phenyl amino polyether modified silicone oil. According to the invention, polyether modified amino silane is firstly prepared from amino silane and alkyl epoxy polyether, and then the hydroxyl-terminated phenyl amino polyether modified silicone oil is prepared from polyether modified amino silane, phenylsilane and octamethylcyclotetrasiloxane in the presence of a catalyst. Compared with the prior art, alkyl phenyl silane, polyether modified amino silane and octamethylcyclotetrasiloxane are synthesized into a brand-new hydroxyl-terminated phenyl polyether modified silicone oil through a polymerization balanced reaction. The microemulsion type softener emulsified by the silicone oil is soft and smooth in hand feel and excellent in yellowing resistance and temperature resistance when used for finishing textiles; the product is good in stability of shear force, centrifugal force, electrolyte, hard water and the like, and is particularly suitable for surface treatment of polyester fibers.

The invention discloses a preparation method of a high-refractive index addition type adhesion promoter for an organosilicone sealing adhesive. The method comprises the following steps: uniformly stirring phenylsilane and a capping agent at room temperature, adding a catalyst and deionized water, performing a reaction at 25-80 DEG C for 1-6 h, then adding epoxy silane, ester silane, boric acid andthe capping agent, performing a reaction at 40-80 DEG C for 1-6 h, and finally removing low-boiling-point substances to prepare the high-refractive index adhesion promoter. The adhesion promoter prepared in the invention has a high refractive index and a significant tackifying effect. The preparation method in the invention has the advantages of simplicity, easiness in implementation, avoiding ofring opening and other side reactions of epoxy groups, environmental protection, easily available raw materials, and easiness in realization of industrial production.

The invention relates to a hydrosilylation type high-temperature silicon resin catalytic inhibition system as well as a preparation method and application thereof. The system comprises two parts, namely a silicon resin coated platinum catalyst and an alkynol modified silane inhibitor, wherein the silicon resin coated platinum catalyst refers to core-shell microspheres having platinum catalysis hydrosilylation activity, and the core-shell microspheres are formed by taking a platinum complex formed by taking vinyl alkoxylsilane as a ligand as the core and active ingredient and taking a cross-linked silicone resin as a coating layer; and the alkynol modified silane inhibitor is phenylsilane modified by alkynyl-terminated alkynol. According to the system disclosed by the invention, long-term stable storage of the one-component hydrosilylation type resins can be maintained under normal temperature conditions, and the silicon resins can be gradually catalyzed to carry out a cross-linking reaction under the high-temperature condition.

The invention belongs to the field of analytical chemistry and discloses a method for separating and determining imidafenacin and related substances thereof by using liquid chromatography. The method can be used for quantitatively determining the contents of imidafenacin and related substances thereof by using phenyl silane bonded silica gel as a chromatographic column of fillers and a certain proportion of buffer salt solutions-organic phases as mobile phases, thus effectively controlling the quality of imidafenacin. The method has strong specificity and high precision and is simple and convenient to operate.

The invention belongs to the field of analytical chemistry, and discloses a method for measuring the chemical purities of substances related to formoterol intermediate (R)-1-(3-amino-4-(benzyloxy) phenyl)-2-(benzyl (R)-1-(4-methoxyphenyl) propan-2-yl) amino) ethanol by separation of liquid chromatography. According to the method, phenyl silane bonded silica gel is taken as a chromatographic column of filler and a buffer salt solution-organic phase with a certain proportion is taken as a mobile phase, and the contents of the formoterol intermediate and the substances related to the formoterol intermediate can be measured, so that the mass of the formoterol intermediate can be effectively controlled, and the mass of the final product of formoterol is controllable. The method is high in specificity, high in accuracy and simple and convenient to operate.

The invention relates to the technical field of organic-inorganic hybrid materials, in particular to a preparation method of cage type octaphenylsilsesquioxane(OPS). The preparation method comprises the following steps that phenylsilane, an organic dissolvent, a basic catalyst and water are mixed to be subjected to a hydrolytic polycondensation reaction, and the cage type OPS is obtained. According to the preparation method of the cage type OPS, phenylsilane is used as a raw material, the raw material is easy to obtain, a one-step hydrolytic polycondensation technology is adopted, material feeding is carried out at a time, the operation is convenient, the reaction cycle is short, and the repeatability is good; meanwhile, the yield coefficient is high, the purity is high, and the stabilityof a product is good; cage type OPS with single molecular weight and high yield coefficient can be prepared in a controllable mode, the preparation method is an environmental-friendly type OPS synthesizing method, and industrial production can be easily carried out.

A polyoxometallate-based multifunctional catalyst and a preparation method belong to the chemical industry field. The catalyst comprises the following formula: Ta2O5 / Si(R)Si-H3PW12O40, wherein, R=-CH2CH2- or -C6H4-. The preparation method comprises the following steps: taking bridged organosilane-bis(trialkoxy)ethyl or phenylsilane [(CH3CH2O)3Si-R-Si(OCH2CH3)3, R=-CH2CH2- or -C6H4-] as a silica source, tantalum pentachloride (TaCl5) as a tantalum source, polyoxometallate (H3PW12O40) with Keggin structure as an inorganic former body and a nonionic surfactant Pluronic P123[HO(CH2CH2O)20(CH2CH(CH3)O)70(CH2CH2O)20H)] as a structure-directing agent to prepare the tantalum pentoxide supported polyoxometallate-based catalyst with skeleton containing bridged hydrophobic alkyl by one-step sol-gel cocondensation and combination with the solvent heat treatment technology. The improvement effect of the catalytic property of the catalyst is very obvious and the life of the catalyst is prolonged.

The invention relates to an LED packaging material. The LED packaging material comprises, by mass, 15 to 19 parts of dichloromethyl phenylsilane, 6 to 12 parts of methyl high-phenyl vinyl silicone resin, 4 to 8 parts of bisphenol A type epoxy resin, 18 to 22 parts of diethylaminopropylanmine, 8 to 10 parts of dichloromethyl phenylsilane, 3 to 5 parts of a silsesquioxane compound containing a mercapto group and 5 to 7 parts of sorbitol fatty acid ester. According to the invention, through optimization of a light emitting diode material, the refractive index, hardness and bonding strength of a light emitting diode are substantially improved. The LED packaging material prepared in the invention has a refractive index of 1.64 to 1.69, Shore hardness of 64A to 72A and bonding strength of 6.6 MPa to 7.4 MPa.

The invention discloses a method for preparing organosilicon, in particular a method for preparing bi-(N, N-diethyl) amine methyl phenyl silicane. The method comprises the following steps that: dried methylene dichloride and di-ethylamine are reacted with methyl phenyl dichlorosilane under nitrogen protection, and partial solvent is recovered after evaporation under normal pressure; after protecting from light and standing, ammonium salt is removed from the partial solvent; after vacuum distillation recovery, filtrate is reacted with the di-ethylamine at a low temperature, and all dichloromethane solvent is recovered after evaporation under normal pressure; ammonium salt is removed by filtration; and then the colorless transparent bi-(N, N-diethyl) amine methyl phenyl silicane is prepared after vacuum rectification. The method has the advantages that: the technological process is simple; the operation is convenient; the industrialization is easy; the purity of the target product bi-(N, N-diethyl) amine methyl phenyl silicane obtained is high; and the method is particularly suitable for synthesizing series diamino compounds, namely (bi-n-amino phenoxyl) methyl phenyl silicane (n is equal to 2, 3 or 4).

The invention discloses a high-temperature-resistant packaging material and a preparation method thereof. The high-temperature-resistant packaging material is prepared from the following components by weight: 10-25 parts of polyethylene terephthalate, 15-30 parts of epoxy resin, 5-10 parts of talcum powder, 3-8 parts of silicon dioxide, 3-8 parts of glycidyl butyl ether, 5-10 parts of glass fiber powder, 5-10 parts of aluminum silicate fibers, 5-15 parts of polyetherimide, 5-10 parts of aminosilane, 5-10 parts of phenylsilane, 2-5 parts of a coupling agent and 2-5 parts of an antioxidant. Compared with the prior art, the high-temperature-resistant packaging material provided by the invention has the advantages that the high temperature resistance of the packaging material is greatly improved and the application scope of the packaging material is greatly broadened since a variety of environment-friendly high-temperature-resistant raw materials are adopted, a variety of environment-friendly pollution-free industrial additives are used, a coupling agent is employed for improving the interfacial effect of organic substances and inorganic substances and all the components are cooperated with each other.

The invention discloses a high performance liquid chromatography detecting method for abiraterone acetate and a tablet of the abiraterone acetate. According to the testing condition, a mixture of acetonitrile and a buffering solution serves as a mobile phase for gradient elution, the detection wavelength of an ultraviolet detector ranges from 200 nm to 400 nm, phenylsilane bonded silica gel is used as a filling agent of a chromatographic column, and the flow rate ranges from 0.5 ml / min to 2.0 ml / min. According to the detecting method, impurities in the abiraterone acetate or the tablet of the abiraterone acetate can be effectively separated and detected, the testing condition is widely used, and the foundation is laid for the quality and the use safety of the abiraterone acetate.

The invention discloses a flexible MXene / Si composite material as well as a preparation method and application thereof. The preparation method comprises the steps of putting an MXene film into an electroplating solution for electro-deposition, and depositing a layer of silicon film on the surface of the MXene film. The electroplating solution is a mixed solution of a silicon source, a phase transfer catalyst and an organic solvent, wherein the silicon source is one or a mixture of two or more of silicon tetrachloride, hexamethyldisilane, cyclopentyl trichlorosilane, methoxytrimethylsilane, hexaphenyl disiloxane, hexaphenyl cyclotrisiloxane, tetrakis (trimethylsiloxy) silane, ethoxytriphenylsilane, triisopropylsilane, trimethylsilanol potassium, trichlorosilane, tetraethoxysilane and silicon bromide. The preparation method disclosed by the invention is simple and feasible. The production cost can be reduced, and the obtained MXene and silicon have relatively strong acting force.

The invention provides a preparation method of aerospace hyperbranched polysiloxane polyimide transparent hybrid thin films. The method comprises the following steps: carrying out hydrolytic condensation on two monomers: phenyl-containing silane and aminopropyl-containing silane in a strong polar aprotic solvent system; vacuumizing to remove micromolecular volatile matters generated by the reaction to obtain amino-containing hyperbranched polysiloxane; modifying a polyimide material by the amino-containing hyperbranched polysiloxane to prepare polyimide containing an HBPSi (Hyperbranched Polysiloxane) structure; and through thermal imidization, obtaining a series of hyperbranched polysiloxane polyimide transparent hybrid thin films (HBPSI-PI). The reaction condition for synthesizing the HBPSi is mild and the cost is low. Furthermore, the HBPSi structure is finally introduced to main chains of polyimide molecules by way of chemical bonds, so that the material is endowed with excellent intrinsic atomic oxygen resistance and good light permeability. The HBPSi-PI hybrid thin films are excellent in comprehensive performance, low in preparation cost, and suitable for industrial production.