292 results about "Silazane" patented technology

The invention discloses a gel solid electrolyte, a preparation method thereof and a lithium ion battery, and relates to the technical field of batteries. The gel solid electrolyte comprises the following components: a solvent, a lithium salt, an inorganic salt or an organic small molecule additive, an ester cross-linking agent polymeric monomer, a silazane polymeric monomer, a diluent and an initiator, the invention also provides a lithium ion battery comprising the gel solid electrolyte and a preparation method of the lithium ion battery. The preparation method has the beneficial effects that by introducing the silazane polymeric monomer and the ester cross-linking agent polymeric monomer, the silazane polymeric monomer and the ester cross-linking agent polymeric monomer can be subjected to a copolymerization reaction, so that in-situ curing of the electrolyte is realized. The silazane fragment in the high-molecular polymer skeleton can effectively realize the constraint on strong Lewis acid substances such as PF5 and can also remove hydrofluoric acid and trace water so as to realize the protection of positive and negative active materials.

The invention provides a polysilazane green special refractory ceramic coating and a preparation method thereof, and belongs to the field of ceramic coatings. The ternary core material composed of titanium carbide, zirconium boride and silicon nitride provides high hardness, oxidation resistance, thermal shock resistance and excellent thermal stability; the silicon dioxide-aluminum oxide composite shell layer remarkably improves the oxidation resistance and reliability of the coating through the synergistic oxidation resistance and crack self-repairing function; the multi-metal oxygen cluster network endows the coating with excellent electrical conductivity, thermal conductivity and corrosion resistance; the intercalated montmorillonite enhances the crack resistance and oxidation resistance through a layered structure and embedded active ions; and the boron nitride coated vanadium carbide particles provide lubricity, oxidation resistance and wear resistance. Through collaborative optimization of multiple components, the comprehensive performance of the coating is comprehensively improved in the aspects of oxidation resistance, thermal conductivity, interface stability, high-temperature performance, mechanical performance and the like, so that the coating shows excellent long-term stability and functionality in an extreme environment.

The invention discloses a graphite piece silicon carbide coating and a preparation method thereof, and belongs to the technical field of inorganic non-metallic materials. The method comprises the following steps: firstly, carrying out surface polishing, cleaning and drying pretreatment on a graphite piece; then a solution containing phosphinazine functionalized silazane and a boron-silicon carlamide compound is adopted for spraying the pretreated graphite piece, drying and curing are conducted, and a surface modification layer is formed; and finally, placing the surface-modified graphite piece in chemical vapor deposition equipment, and depositing at specific temperature, pressure and atmosphere to form the silicon carbide coating. According to the method, uniform nucleation and crystallization of the silicon carbide coating are effectively promoted through unique surface modification treatment, and the compactness and uniformity of the coating and the binding force of the coating and a matrix are remarkably improved. The obtained coating graphite piece has excellent thermal corrosion resistance, oxidation resistance and mechanical property, the service life and the use frequency of the coating graphite piece in semiconductor epitaxial equipment are remarkably prolonged, the whole preparation process is environmentally friendly, and the coating graphite piece is suitable for coating treatment of a large graphite base material.

The invention provides a diaphragm and a preparation method thereof and a lithium ion battery, the diaphragm comprises a base membrane layer and a composite functional layer, the composite functional layer comprises hydrophobic SiO2 aerogel modified by a hydrophobic agent, a conductive ion polymer and a solid electrolyte, and the composite functional layer respectively accounts for 3-12wt%, 0.5-1.0 wt% and 0.5-1.5 wt% of the total mass of the diaphragm; the hydrophobic agent comprises trimethylchlorosilane, hexamethyldisilazane, perfluorooctyltriethoxysilane, polyvinylidene fluoride, polydimethylsiloxane and the like, the conductive ionic polymer comprises polyvinylpyrrolidone, lithium polymethacrylate, lithium polystyrene sulfonate, polyacrylamide and the like, and the solid electrolyte comprises lithium lanthanum titanium oxide, lithium lanthanum zirconium oxide, lithium lanthanum zirconium tantalum oxide and the like. The wettability is improved by the high porosity of the hydrophobic SiO2 aerogel, the stability and strong conductivity of a physical conductive network of the solid electrolyte and the ion affinity and amphoteric binding capacity of the conductive ion polymer are optimized, the electrochemical performance and thermal stability of the interface are optimized, and comprehensive optimization of the thermal-electric-interface performance of the diaphragm is realized through combination.

The invention provides an electrolyte and a silicon-based lithium ion battery. The electrolyte comprises a lithium salt, an organic solvent and an additive, the mass ratio of the additive in the electrolyte is 0.1%-10%, and the additive comprises a sulfur-containing compound and a silazane compound. The sulfur-containing compound has stronger electrochemical reduction tendency and can be preferentially reduced to generate an SEI film, meanwhile, the formed SEI comprises Li2SO3, CH3CH (OSO2Li) and the like, and the components can improve the stability of the SEI film and inhibit the volume expansion of the silicon negative electrode. The silazane compound can form a protective film containing a silicon-nitrogen bond on the surface of the negative electrode, so that the thermal stability and the electrochemical stability of the electrolyte are improved. According to the electrolyte formula disclosed by the invention, the problem of poor cycling stability of the silicon-based lithium ion battery is effectively solved by controlling the types and the concentrations of the additives and utilizing the synergistic effect, and the first effect of the silicon-based lithium ion battery is also improved.

The invention relates to the technical field of high polymer materials and preparation, and discloses a high-temperature-resistant ceramic polymer-derived ceramic precursor resin molding compound and a preparation method thereof. The high-temperature-resistant composite material is prepared from the following raw materials: 100 parts of high-molecular methyl hydrogen solid polysilazane resin, 1.0 to 5.0 parts of organic silicon plastic modifier, 30 to 40 parts of hybrid fiber, 1.0 to 5.0 parts of fiber sizing agent, 20 to 25 parts of high-temperature-resistant active filler, 10 to 15 parts of fluxing agent, 1.0 to 5.0 parts of high-temperature-resistant lubricant, 0.01 to 2.50 parts of curing agent, 0.1 to 5.0 parts of release agent and 1.2 parts of high-temperature-resistant pigment. Wherein the fiber sizing agent is one or more of epoxy resin, hexamethyldisilazane and polydopamine. The high-temperature-resistant ceramizable polymer derived ceramic precursor resin molding compound provided by the invention has good processability and relatively high ceramic yield.

The invention relates to a hydrophobically modified aluminum oxide and polytetrafluoroethylene composite film as well as a preparation method and application thereof. According to the present invention, the aluminum oxide is firstly subjected to hydroxylation treatment, and then the surface of the aluminum oxide is subjected to hydrophobic treatment by using cyclosilazane, such that the Al-OH content of the prepared hydrophobic modified aluminum oxide surface is low, such that the water absorption rate of the aluminum oxide-PTFE composite film is low, and the aluminum oxide-PTFE composite film is not easily interfered by moisture, and has good electrical insulation performance. In addition, amino groups (-NH2) or imino groups (-NH-) are further introduced into the surface of the hydrophobic modified aluminum oxide and can form hydrogen-bond interaction with C-F bonds in PTFE, so that the compatibility of the hydrophobic modified aluminum oxide and the PTFE is improved, and the mechanical property of the aluminum oxide-PTFE composite film can still be kept under the condition of high addition amount of aluminum oxide.

The invention belongs to the technical field of nanofiltration, and provides a preparation method of a recrystallized silicon carbide-silicon carbonitride ceramic membrane. The preparation method comprises the following steps: applying a polysilazane solution to a porous substrate for the first time, and then performing first pyrolysis to obtain a pyrolysis material; and applying a polysilazane solution on the pyrolysis material for the second time, and then carrying out second pyrolysis to obtain the recrystallized silicon carbide-silicon carbonitride ceramic membrane. According to the invention, a solution containing propargyl polysilazane or organic polysilazane Durazane 1500 quick-drying resin is used as a precursor to prepare the ceramic membrane, and the ceramic membrane has the advantages of high ceramic yield, excellent high-temperature stability, high retention rate and controllable microstructure, and is suitable for separation and protection application in extreme environments.

Provided is a novel cross-linked polysilazane which is capable of forming a silicon-containing film having excellent crack resistance while being capable of forming a thick film. The invention relates to cross-linked polysilazane with a certain structure.

The invention relates to the technical field of coatings, and discloses a polysilazane-graphene composite electrical equipment insulating and pressure-resistant protective coating and a preparation method thereof. The flame-retardant coating is prepared from the following raw materials in parts by mass: 30 to 50 parts of polysilazane, 3 to 5 parts of telomer, 1 to 3 parts of synergist, 4 to 5 parts of modified silicon dioxide, 4 to 5 parts of modified graphene, 1.5 to 2 parts of multiwalled carbon nanotube, 0.5 to 2 parts of modified zinc oxide, 1 to 2 parts of fluorocarbon surfactant and 130 to 230 parts of tetrahydrofuran. By introducing the telomer, the adhesive force of the coating on a rusty surface is effectively improved, and the properties of high temperature resistance, insulation and pressure resistance, flame retardance, water resistance, ice condensation resistance and the like are enhanced; by introducing the synergist, the modified silicon dioxide, the modified graphene, the multi-walled carbon nanotubes and the modified zinc oxide, the protection capability is further improved. Therefore, the coating disclosed by the invention is excellent in comprehensive protection performance, can meet the long-term operation requirement of power equipment in a complex and severe environment, and is wide in application prospect.

The invention provides a high-voltage-resistant polysilazane-based insulating material for a power battery pack of a new energy automobile and a preparation method of the high-voltage-resistant polysilazane-based insulating material, and belongs to the technical field of insulating materials. The silicon carbide microspheres are prepared through reaction of polycarbosilane and polyaniline, and through hydrothermal deposition of molybdenum disulfide and coating of organic boron, the heat-conducting property, the electrical insulating property and the flame retardant property of the silicon carbide microspheres are improved; secondly, the prepared metal organic supramolecular cage is subjected to carbon nitride modification and surface modification, so that the thermal conductivity, the interface bonding force and the dielectric property of the metal organic supramolecular cage are improved; in addition, the carbon nanotubes are subjected to acid treatment, rare earth lanthanum modification and boron nitride compounding, so that the dispersity, the thermal conductivity and the insulating property of the carbon nanotubes are remarkably improved; through the synergistic effect of all the components, the thermal performance, the electrical performance and the mechanical performance of the composite material are comprehensively optimized.

The invention relates to the technical field of cables, in particular to an environment-friendly flame-retardant antioxidant chlorinated polyvinyl chloride cable and a preparation method thereof, and the environment-friendly flame-retardant antioxidant chlorinated polyvinyl chloride cable comprises the following raw materials: chlorinated polyvinyl chloride, dioctyl terephthalate, nano aluminum hydroxide, a composite flame retardant, a calcium-zinc stabilizer, epoxidized soybean oil and nano clay. The composite flame retardant forms an organic-inorganic synergistic core-shell structure on a micro-nano scale, hexaphenoxy cyclotriphosphazene provides a phosphorus source flame-retardant function, and polyborosilazane forms a boron-silicon-nitrogen ceramic network after heat treatment, so that the carbon layer stability and thermal oxidation resistance of the material are effectively improved; meanwhile, the modified silicon dioxide is used as an inorganic skeleton reinforcing phase, so that the dispersity and the interface bonding performance of the flame retardant in a CPVC matrix are improved; through the synergistic effect, the flame retardant efficiency, thermal stability and mechanical strength of the cable material are remarkably improved, and smoke release and toxicity are reduced.

The invention provides ablation-resistant tantalum ethoxide modified polyborosilazane resin as well as a preparation method and application of the ablation-resistant tantalum ethoxide modified polyborosilazane resin. The preparation method comprises the following steps: S1, reacting boron trichloride, methyl dichlorosilane and hexamethyldisilazane under the protection of an inert atmosphere to obtain a polyborosilazane fluid; s2, under the protection of inert atmosphere, reacting the polyborosilazane fluid, divinyl benzene and tantalum ethoxide in the presence of a catalyst to obtain a tantalum ethoxide modified polyborosilazane oligomer fluid; s3, under the protection of inert atmosphere, heating and curing the tantalum ethoxide modified polyborosilazane oligomer fluid to obtain the ablation-resistant resin. The tantalum ethoxide modified polyborosilazane resin disclosed by the invention has a high crosslinking degree and shows excellent high temperature resistance and oxidation resistance.

The invention discloses a new energy battery cell temperature-resistant insulating coating which is prepared from a component A, a component B and a component C. The component A is prepared from, by weight, 20-60 parts of film forming matter, 15-50 parts of temperature-resistant filler, 15-25 parts of flame retardant, 10-15 parts of carrier powder, 1-2 parts of organic silicon additive and 3-5 parts of diluent, the component B is a catalyst, and the component C is a curing agent. The composition of the methyl polysiloxane resin, the epoxy modified polysiloxane resin and the silazane resin is used as a film forming substance, and the battery cell coating with high flame retardant grade and shear resistance can be obtained. The low-melting-point glass powder with the initial melting temperature of 500 DEG C is introduced into a film forming substance, so that the voltage resistance of the coating before high temperature resistance can be improved, the insulation effect of the coating is optimized, and the salt mist resistance, acid and alkali resistance, electrolyte resistance and water resistance are improved.

The invention discloses self-adhesive single-component liquid silicone rubber with low compression set and a preparation method thereof. The preparation method comprises the following steps: kneading high-viscosity double-end vinyl polydimethylsiloxane, white carbon black, hexamethyldisilazane and water to prepare base rubber; and uniformly mixing and stirring the base rubber with double-end vinyl polydimethylsiloxane, polydimethylmethylvinylsiloxane, polydimethylmethylhydrosiloxane, a first functional aid, a second functional aid, an inhibitor and a catalyst in proportion to prepare the single-component liquid silicone rubber. The silicone rubber has excellent bonding performance on various substrates such as stainless steel, aluminum materials, copper materials, kovar alloys, nylon, polycarbonate and PBT (polybutylene terephthalate), has excellent mechanical properties and low compression set rate, is suitable for sealing and bonding of various automobile, industrial and electronic components, and has wide application prospects. The present invention relates to a sealing strip, in particular to a sealing adhesive scenario for in-situ curing sealing gasket (CIPG) applications, instead of a conventional sealing strip.

The invention discloses a high-temperature-resistant and high-modulus adhesive and a preparation method thereof, and relates to the technical field of adhesives. The water-based adhesive comprises the following raw materials: 40-60 parts of a soft monomer, 20-30 parts of a hard monomer, 5-10 parts of a functional monomer, 1-3 parts of a cross-linking agent, 0.5-1.5 parts of an initiator, 2-5 parts of a modified nano filler and 30-50 parts of a solvent, the functional monomer is prepared by compounding N-methoxy methyl acrylamide, acrylic acid and 2-acrylic acid-hexahydro-4, 7-methylene-1H-indenyl ester according to a mass ratio of 2 to 1 to (1 to 1.5); the cross-linking agent is prepared by compounding N, N '-methylene bisacrylamide and 1, 1, 3, 3-tetramethyl-1, 3-divinyl disilazane according to a mass ratio of 1: (0.5 to 1). The adhesive has the advantages of favorable adhesive property, favorable high-temperature resistance and high modulus.

The invention provides a preparation method of high-selectivity single-ended vinyl silicone oil, which comprises the following steps: adding a hydroxyl-terminated polydimethylsiloxane linear body into low-viscosity dimethyl silicone oil, uniformly mixing, adding linear phosphonitrile chloride for catalysis, and vacuumizing to remove water; continuously raising the temperature, adding a viscosity reduction catalyst, mixing a tetramethyl divinyl disiloxane double-end sealing agent, a dimethyl vinyl ethyoxyl silane single-end sealing agent and low-viscosity dimethyl silicone oil, dropwise adding the mixture into the reaction kettle, keeping the temperature, balancing, vacuumizing, and further removing water; then adding a hexamethyldisilazane neutralizing agent to carry out neutralization treatment; and after the neutralization is completed, entering a low-boiling-point removal process, carrying out reduced pressure distillation to remove low-boiling-point substances, and thus obtaining single-end vinyl polydimethylsiloxane. The single-ended vinyl silicone oil is applied to mold silica gel of liquid silicone rubber and can replace low-viscosity dimethyl silicone oil, the product hardness is adjusted, the oil seepage rate of the silicone oil is reduced, and the oil seepage phenomenon commonly existing in the industry is improved.

The application belongs to the technical field of carbon / ceramic composite material preparation, and provides an impregnation sealing liquid for carbon / ceramic friction discs, an impregnation sealing method, a densified carbon / ceramic friction disc and application thereof. The impregnation sealing liquid comprises 2-5% of an interface reinforcing metal component, 3-6% of a friction and wear resistant ceramic component, 2-5% of a metal oxide component and the balance of a polymer. The polymer comprises liquid polycarbosilane and liquid polyborosilazane, and the mass ratio of the liquid polycarbosilane to the liquid polyborosilazane is 7-9:1-3. The interface reinforcing metal component comprises one or more of titanium powder, chromium powder, nickel powder, cobalt powder and molybdenum powder. The friction and wear resistant ceramic component comprises one or more of silicon carbide, zirconium boride, boron carbide and zirconium carbide. The metal oxide component comprises one or more of cerium oxide, yttrium oxide and lanthanum oxide. The impregnation sealing liquid can realize the triple improvement of the interface bonding force, the friction stability and the high-temperature oxidation resistance of the carbon / ceramic friction disc.

The invention discloses a method for preparing polysilazane nanospheres using the imgabs0 method, comprising: (1) mixing deionized water, anhydrous ethanol, and ammonia to obtain solution A; (2) using anhydrous ethanol as a solvent, dissolving silazane oligomers in anhydrous ethanol to form a solution B having a concentration of 0.01-0.04 mol / L; (3) rapidly adding solution B to solution A, and performing a sealing reaction; (4) adjusting the stirring speed to 500-550 rpm after reacting for 1-2 min, and reacting for 20-24 h; (5) stopping the reaction, filtering the reaction solution and centrifuging it, and then placing the resulting solid in a vacuum drying oven and drying it for 10-12 h to obtain polysilazane nanospheres. The present invention uses the imgabs1 method to prepare nanospheres without using any template during the preparation process, and the operating steps are simple, reducing costs, and preparing polysilazane nanospheres with good dispersion.

The invention relates to a method for efficiently preparing high-alpha-phase silicon nitride powder and application of the high-alpha-phase silicon nitride powder, and the method specifically comprises the following steps: dissolving polysilazane in an organic solvent to prepare a 10wt%-40wt% polysilazane solution; adding 75wt%-95wt% of silicon powder and 5wt%-25wt% of a diluent into the polysilazane solution, and mixing for a period of time to obtain mixed slurry; and adding the obtained mixed slurry into a sintering mold, and roasting the mixed slurry under a certain pressure in a protective atmosphere to finally obtain the high-alpha-phase silicon nitride powder. The method has the advantages of high efficiency, high alpha-phase content and narrow particle size distribution.

A silicon-based coating composition for a wide range of mold surfaces, which composition is formed from a mixture of constituents comprising appropriate portions of silazane, siloxane, and silane, and optionally organic solvent. The composition, after curing, results in an extreme release product that is non-transferable to the finished part, allowing for proper adhesion of coatings or adhesives to the finished surface without additional surface preparation. The cured coatings are ultrathin, having a thickness between 0.1 μm and 3 μm, and having a hardness between about 4H and about 9H.

A process for producing a hybrid polymer material based on a reactive polymer resin and one or more Si compounds from the group comprising silanes, siloxanes, silazanes and silicone resins, wherein an inorganic solid and one or more other solids selected from the group comprising thermoplastics, thermosets, elastomers, recycled plastics, aramid fibers, carbon fibers, natural fibers and plant solids are first combined with the reactive polymer resin and the one or more Si compounds as well as additives to form a raw material, the raw material is compacted and subsequently reacted and cured, wherein the one or more other solids are used in a proportion of 30 wt.% to 75 wt.% of the raw material.

The application discloses adamantane-modified silane coupling agent, one-component dealcoholization type silicone rubber and a preparation method thereof. The adamantane-modified silane coupling agent is obtained by sequentially reacting adamantanol with tetramethyldivinyl disilazane and a modifier; and the structural formula of the modifier is as follows. The crosslinking agent in the one-component dealcoholization type silicone rubber is the adamantane-modified silane coupling agent. The one-component dealcoholization type silicone rubber prepared by using the adamantane-modified silane coupling agent as the crosslinking agent has high tensile strength and elongation at break, and has good comprehensive mechanical properties.

This application relates to the field of hydrosilylation, and in particular to a highly efficient catalyst for hydrosilylation reactions and its preparation method. This application provides a method for preparing a microcapsule-form catalyst, which first modifies methyl-terminated hydroxyl silicone oil with silazane, and then forms a microcapsule coating system with paraffin, thereby improving the release performance of the microcapsule coating system, so that the catalyst has low reactivity in the early stage of release, thereby improving the uniformity of the reaction process inside the silicone rubber, and thus improving the transparency and overall strength of the silicone rubber.

The application belongs to the technical field of sand consolidation agent preparation, and particularly relates to a sand consolidation agent and a preparation method thereof. The sand consolidation agent is composed of component A and component B. The component A is composed of the following raw materials: a diphenyl phenolic epoxy resin, hexakis(4-hydroxymethylphenoxy)cyclotriphosphazene, modified nano calcium zirconate, cage octakis(aminophenyl)silsesquioxane, n-butyl glycidyl ether, KH-550 silane coupling agent, polyether amine, fumed silica and defoaming agent. The component B is composed of the following raw materials: polyborosilazane and 2-ethyl-4-methyl imidazole. The cage octakis(aminophenyl)silsesquioxane in the raw material of the sand consolidation agent strengthens the network structure stability through chemical bonding, the hexakis(4-hydroxymethylphenoxy)cyclotriphosphazene realizes thermal stabilization through chemical bonding and physical dispersion, and the modified nano calcium zirconate provides physical support. The three components synergistically improve the heat resistance of the system.

To provide an aminoalkoxydisilazane compound, a silicon-containing thin film deposition composition containing the same, and a method for producing a silicon-containing thin film using the same.SOLUTION: An aminoalkoxydisilazane compound represented by the chemical formula 1 in the figure is provided: R1, R11 and R12 each independently represent a C1-C7 alkyl group or the like, or R11 and R12 may be linked together to form a ring; R2 and R3 each independently represent a C1-C7 alkyl group or the like; R represents a C1-C7 alkyl group or a C3-C7 cycloalkyl group; and R4 and R5 each independently represent a C1-C7 alkyl group or the like. The aminoalkoxydisilazane compound of the present invention is thermally stable; and by using a highly volatile and reactive compound as a silicon-containing precursor, it is possible to form a silicon-containing thin film with excellent physical and electrical properties and high purity.SELECTED DRAWING: Figure 1

The invention discloses high-temperature-resistant peroxide vulcanized rubber and a preparation method thereof, and belongs to the technical field of vulcanized rubber, and the high-temperature-resistant peroxide vulcanized rubber is prepared from the following raw materials in parts by weight: 90.0 to 100.0 parts of methyl vinyl silicone rubber, 1.0 to 3.0 parts of silane coupling agent modified graphene oxide, 35.0 to 45.0 parts of white carbon black, 1.0 to 3.0 parts of nano iron oxide, 1.0 to 2.0 parts of nano cerium oxide and 1.0 to 2.0 parts of silazane oligomer. The invention discloses a silicone rubber composition which comprises the following components in parts by weight: 5.0-5.0 parts of methyl vinyl silicone rubber, 3.0-5.0 parts of carboxyl silicone oil and 0.8-1.5 parts of 2, 5-dimethyl-2, 5-di (tert-butylperoxy) hexane, the vinyl content of the methyl vinyl silicone rubber is 0.5-1.0%, and the silazane oligomer is hexamethyldisilazane. Through the mode, the silicone rubber is subjected to peroxide vulcanization, so that the heat resistance of the silicone rubber with high thermal stability is further improved, and meanwhile, the overall performance of vulcanized rubber is jointly improved through the compounding of the graphene oxide modified by the silane coupling agent and the white carbon black and the synergistic gain effect of pre-irradiation treatment in the preparation process.

The application belongs to the technical field of nanofiltration, and provides a preparation method of recrystallized silicon carbide-silicon carbon nitride ceramic membrane. The application obtains a pyrolytic material by first applying a polysilazane solution on a porous base and then performing first pyrolysis; and obtains the recrystallized silicon carbide-silicon carbon nitride ceramic membrane by second applying the polysilazane solution on the pyrolytic material and then performing second pyrolysis. The application uses a solution containing propargyl polysilazane or an organic polysilazane Durazane 1500 rapid cure fast-drying resin as a precursor to prepare the ceramic membrane, and the ceramic membrane has high ceramic yield, excellent high-temperature stability, high rejection rate and controllable microstructure, and is suitable for separation and protection applications in extreme environments.

The present disclosure provides a one-component room temperature vulcanizable (RTV) silicone sealant composition comprising an alkoxy-terminated organopolysiloxane polymer (a) and a tin-based catalyst (d), and a process for preparing said one-component room temperature vulcanizable (RTV) silicone sealant composition comprising an alkoxy-terminated organopolysiloxane polymer (a) and a tin-based catalyst (d). The one-component room temperature vulcanizable (RTV) silicone sealant composition relies on a novel stabilizer combination (e) of (e)(i) one or more silazanes and one or more silanes (e)(ii) having at least one acetamide group, with the aim of providing a storage-stable one-component room temperature vulcanizable (RTV) silicone sealant composition.