11320 results about "Silicone" patented technology

The invention discloses a loess tunnel surrounding rock deformation monitoring method, and relates to the technical field of civil engineering and geological engineering, and the method comprises the steps: integrating a spiral winding type optical fiber sensor, a double-cavity humidity compensation vibrating wire sensor and a microseismic array, and capturing surrounding rock strain, vibration and geological activities; the vibrating wire sensor suppresses humidity interference through a silicone oil damping medium and self-adaptive excitation frequency, and the optical fiber sensor is fixed through a pre-embedded silica gel sleeve to adapt to surrounding rock deformation; edge computing nodes are deployed on the inner wall of the tunnel, an FPGA chip and a lightweight GRU model are integrated, optical fiber strain, a micro-seismic energy spectrum and laser point cloud displacement field data are fused in real time, the strain gradient is analyzed, and a crack propagation probability cloud picture is generated; redundant optical fiber link switching is combined with a six-degree-of-freedom mechanical arm to realize breakpoint self-repairing, and a self-cleaning air curtain is integrated to inhibit dust adhesion; and constructing a geological parameter library based on a BIM-GIS fusion platform, driving a finite element-discrete element coupling model to dynamically update boundary conditions, and predicting surrounding rock deformation and collapse risks.

The invention provides a low-voltage cable, and relates to the technical field of cables, the low-voltage cable comprises a conductor layer, a support layer, a shielding layer and a sheath layer, the conductor layer is composed of multiple strands of fractal stranded conductors, and each fractal stranded conductor comprises an inner-layer superfine silver-plated copper wire, a middle-layer copper-clad aluminum wire and an outer-layer nickel-plated copper alloy wire; the supporting layer wraps the conductor layer and comprises an inner supporting layer, a dynamic framework layer and an outer restraint layer, the inner supporting layer is an obliquely wound aramid fiber woven belt, the dynamic framework layer is formed by alternately arranging shape memory polymers and carbon fiber composite belts, and the outer restraint layer is a spirally wound silica gel-glass fiber composite rope. The shielding layer comprises a tinned copper wire woven mesh; the sheath layer is a thermoplastic polyurethane matrix, a microcapsule self-repairing agent is dispersed in the thermoplastic polyurethane matrix, a microcapsule comprises a siloxane prepolymer, and the thermoplastic polyurethane matrix further comprises graphene nanosheets. Through collaborative design of the fractal stranded conductor layer, the dynamic skeleton support layer, the shielding layer and the self-repairing sheath, comprehensive improvement of cable performance is realized.

The invention belongs to the technical field of composite coatings, and particularly relates to a corrosion-resistant and ultraviolet-resistant protective coating for wind power generation equipment and a preparation method thereof.The corrosion-resistant and ultraviolet-resistant protective coating for the wind power generation equipment is prepared from, by mass, 40-60 parts of gradient fluorosilicone modified polyurethane resin, 5-12 parts of core-shell type ZnO-coated MOFs composite particles, 1-3 parts of a curing agent, 1-3 parts of a curing agent and 1-3 parts of a curing agent. According to the invention, the problems of poor ultraviolet resistance, poor weather resistance, poor corrosion resistance, poor corrosion resistance, poor corrosion resistance, poor corrosion resistance, poor corrosion resistance and the like in the existing coating and the preparation process thereof are well solved; the shielding layer is single and incapable and has a poor self-repairing effect; and the coating toughness of an epoxy resin system is insufficient and cannot adapt to fatigue deformation of equipment under a vibration working condition.

The invention discloses an automatic rock wool block arranging device for rock wool composite board production, and belongs to the technical field of rock wool composite board production, the automatic rock wool block arranging device comprises a support frame, an automatic arranging and stacking assembly and an automatic dismounting assembly, the upper surface of the support frame is provided with a conveying roller, the upper surface of the conveying roller is provided with a plurality of rock wool blocks, and the outer surface of the support frame is provided with a piling car; the automatic arranging and stacking assembly is installed in the stacking car. According to the rock wool block stacking device, the supporting plate is driven by the hydraulic rod to move up and down, the stacking process of rock wool blocks can be rapidly completed, the waiting time is shortened, and therefore the arrangement and stacking work of the rock wool blocks can be automatically completed, and tedious and complex steps in the traditional stacking process are avoided; according to the rock wool block stacking device, the position accuracy during stacking each time is ensured, errors possibly caused by manual operation are avoided, meanwhile, extra buffering can be provided through the silica gel pad in the stacking process, scratches or damage to the surfaces of rock wool blocks are avoided, and the quality of final products is improved.

A dental mouthpiece is provided that may be attached to a high-suction dental adapter for the purpose of assisting the dental staff during dental procedures through chair-side, hands-free suction, and isolation. Such a mouthpiece may include a main body portion, a cheek retractor portion, and a suction connector portion. In some embodiments, the main body portion, cheek retractor portion, and suction connector portion (and sub-portions thereof) may be molded in one piece, preferably by injection molding. In an exemplary embodiment, the mouthpiece may be made of a material that is flexible, translucent, conducive to injection molding, high heat-resistant, and autoclavable. Such a material may include silicone. Because the mouthpiece may be made of a high heat-resistant and autoclavable material, such a mouthpiece may be reusable.

The invention relates to the technical field of preparation of a ceramic silica gel composite belt for a power battery of a new energy automobile, in particular to a super-high-temperature-resistant and impact-resistant ceramic silica gel composite belt for an automobile and a preparation method of the super-high-temperature-resistant and impact-resistant ceramic silica gel composite belt. The phase change toughening effect of the core-shell structure filler is generally utilized to generate pressure stress, inhibit crack propagation and improve fracture toughness through volume change during phase change, meanwhile, the core-shell structure filler is subjected to thermal expansion coefficient gradient structure design, interface stress in the core-shell structure filler at high temperature is relieved, thermal stress concentration is avoided, thermal shock resistance is improved, and the service life of the core-shell structure filler is prolonged. And the ceramic layer is prevented from cracking, so that the ceramic layer has good high-temperature resistance and flame retardance, flame spreading can be effectively prevented, and thermal runaway of the power battery is prevented.

An ergonomic neck fan comprises two fan shells for wearing around the neck of the user, and a silicone assembly. The interior of each shell is provided with a fan and cavity wall, and each shell comprises a shell body and a shell rear cover. Air guide components are provided inside the shells, and the air guide components cooperate with the cavity walls to divide the interior space of the shell body into an air outlet assembly and a storage cavity. The air outlet assembly comprises a fan cavity for placing the fan, and a horn-shaped air duct. The invention achieves high-speed airflow and efficient transfer, enabling the wind pressure towards the user's face and neck to be stronger and adaptable to different body shapes in outdoor and sports scenarios, allowing the user to be cooled by the wind and providing a better cooling effect and lower noise.

The invention relates to the technical field of silica gel cables, and discloses a silica gel cable with high reliability and high flexibility and a process thereof, and the silica gel cable comprises a conductor layer which is formed by hierarchically twisting a plurality of tinned copper wires with the diameter of 0.05-0.10 mm, and the twisting helical angle gradually changes from 25 degrees in the inner layer to 55 degrees in the outer layer; the insulating layer coats the conductor layer and comprises a silica gel material, a hydrogen-containing silicone oil cross-linking agent and a plasticizer, microcapsules with the particle size of 20-50 microns are dispersed in the silica gel material, a shell layer of each microcapsule is polyurethane, and a core layer of each microcapsule is a siloxane repairing agent containing a platinum catalyst; and a sheath layer. A hydrogen-containing silicone oil cross-linking agent in the insulating layer enables molecular chains to be cross-linked to form a net structure, the physical and chemical stability is enhanced, microcapsules are matched to endow a self-repairing function, a repairing agent is released when the cable is damaged, the self-repairing performance of the insulating layer is further guaranteed, damage is filled through a cross-linking reaction, insulation is recovered, the reliability of the cable is remarkably improved, and the service life of the cable is remarkably prolonged.

The invention provides a tear-resistant, wear-resistant, low-smoke and non-dripping sheath material as well as a preparation method and application thereof. The tear-resistant wear-resistant low-smoke non-dripping sheath material is prepared from the following components in parts by weight: 25 to 35 parts of metallocene linear low-density polyethylene, 10 to 15 parts of ethylene-vinyl acetate copolymer, 6 to 8 parts of compatilizer, 50 to 60 parts of aluminum hydroxide, 10 to 15 parts of magnesium hydroxide, 3 to 4 parts of microencapsulated red phosphorus, 5 to 8 parts of lithium oxide synergist, 4 to 6 parts of silicone master batch, 0.3 to 0.7 part of carbon black master batch and 1.5 to 2.5 parts of coupling agent. The tear-resistant wear-resistant low-smoke non-dripping sheath material provided by the invention has the characteristics of being halogen-free, flame-retardant, tear-resistant and wear-resistant, and a low-smoke halogen-free flame-retardant power cable prepared from the sheath material has the characteristics of high smoke light transmittance during combustion, no dripping and cracking resistance.

According to the stable organic silicon emulsion and the preparation method thereof provided by the invention, polyglycerol ricinoleate with different polymerization degrees, polydihydric alcohol oleate with different molecular weights and silicon polyether are introduced, so that the emulsifying capacity of the emulsion is improved, and the stability of the emulsion is improved; the polyglycerol ricinoleate serving as an emulsifier and a stabilizer can disperse water-soluble substances and oil-soluble substances, so that all the components are uniformly mixed, the emulsification is more sufficient, and the stability of the emulsion is improved; the emulsion enters the emulsification pump for emulsification under the condition of high rotating speed, so that the particle size of the emulsion is smaller, and the stability is better.

Provided in the embodiments of the present disclosure are a silicone dispensing quality evaluation method and apparatus. The method comprises: acquiring a collected image of a silicone dispensing area; on the basis of the collected image, acquiring point cloud data; on the basis of the point cloud data, acquiring silicone feature data; on the basis of the silicone feature data, calculating the thickness of silicone after the silicone is flattened; and on the basis of the silicone feature data and the thickness of the silicone, evaluating the silicone dispensing quality.

The invention relates to a preparation method of silica gel microspheres used as a catalyst carrier, which comprises the following steps of: adjusting the speed of converting acidified water glass into gel by means of controlling material temperature and material concentration, multiple times of acidification and the like, so that the acidified water glass is atomized to form liquid drops, and then the liquid drops are quickly converted into the gel; and carrying out aging, acid washing, water washing, supercritical carbon dioxide drying, roasting in an atmosphere furnace and the like to prepare the silica gel microspheres with high specific surface area and large pore volume. Compared with the prior art, the specific surface area of the obtained silica gel can reach 250-450 m < 2 > / g, the pore volume can reach 1.5-3.0 cm < 3 > / g, and the silica gel has good strength and fluidity.

The invention relates to the technical field of sealing ring hot-press forming, discloses sealing ring hot-press forming equipment, and aims to solve the problems of low finished product taking-out and mold cleaning efficiency and low automation degree in the prior art. The equipment comprises a hot press base, a hot press base and a lower die which are arranged on the hot press base, and a hot press plate and an upper die which are arranged above the hot press base in a lifting manner. The pushing part and the scraping part which work in a linkage mode are arranged, and the pushing part comprises a lifting supporting and pushing piece driven by an electric rod and a top ring and is used for upwards ejecting out a sealing ring formed in a lower mold; the scraping part comprises a rotation guiding part for enabling the supporting and pushing part to rotate during ascending and descending and a silica gel scraper which is elastically connected to the top ring and can be unfolded in the ejection process, and when the electric rod drives the pushing part to ascend to eject out the sealing ring, the rotation guiding part enables the pushing part to integrally rotate, the silica gel scraper is driven to be tightly attached to and scrape the inner wall of the lower mold, and residual rubber is scraped; the production cycle is shortened, and the production efficiency and the automation level are improved.

The invention discloses a low-temperature-resistant, acid-resistant and alkali-resistant roof waterproof coating and a preparation method thereof. The coating is prepared from various raw materials such as acrylate-organosilicone copolymer emulsion and polyurethane modified acrylate resin, and a key raw material is prepared through free radical polymerization and addition polymerization reaction. The preparation method comprises the steps of pre-dispersion, auxiliary agent dispersion, pigment and filler dispersion, emulsion and functional auxiliary agent compounding, performance regulation and control and the like. The acrylate-organic silicon copolymer emulsion and the polyurethane modified acrylate resin form an interpenetrating network through physical blending and chemical crosslinking, and the low-temperature toughness of a flexible phase and the chemical resistance of a rigid phase are both achieved. In a low-temperature environment, the rigidity embrittlement of the polyurethane resin is counteracted by the flexibility of the organosilicone chain segment, so that the cracking of the coating is avoided; in an acid-base environment, a urethane bond of polyurethane and a silicon-oxygen bond of organic silicon cooperate to resist chemical erosion, molecular chain breakage is reduced, and the problem that an existing waterproof coating is insufficient in performance in the low-temperature and acid-base environment is effectively solved.

The invention discloses an extruded and insulated flame-retardant power cable for on-line monitoring of rail transit, and relates to the technical field of power cables, serpentine springs are connected between two adjacent cavity frames and outside corresponding five conductors on the outer side, an outer plastic pipe is connected between two adjacent serpentine springs, the outer plastic pipe is filled with silicone fireproof adhesive, and the outer plastic pipe is connected with the outer side of the serpentine springs. According to the invention, through the cooperation of the cavity frame, the serpentine spring, the inner plastic pipe and the expanding and supporting strip, the outer side of the conductor is provided with a sufficient heat dissipation circulation gap, the heat dissipation speed of the cable is improved, and the inner parts of the outer plastic pipe and the inner plastic pipe are filled with silicone fireproof glue, so that the heat dissipation performance of the cable is improved. The silicone fireproof adhesive expands when meeting fire to form a compact fireproof layer which tightly wraps the outer side of the conductor, and the expanded fireproof layer can fill heat dissipation gaps among the conductors to prevent flame from spreading, so that the cable has good heat dissipation capability, and meanwhile, the flame retardant property of the cable is also ensured.

Shallow Trench Isolation (STI) chemical mechanical planarization (CMP) polishing compositions, methods and systems of use therefore are provided. The CMP polishing composition comprises abrasives of ceria coated inorganic oxide particles, such as ceria-coated silica; and dual chemical additives for providing the tunable oxide film removal rates and tunable SiN film removal rates; low oxide trench dishing, and high oxide: SiN selectivity. Dual chemical additives comprise at least one silicone-containing compound comprising at least one of (1) ethylene oxide and propylene oxide (EO-PO) group, and at least one of substituted ethylene diamine group on the same molecule; and (2) at least one non-ionic organic molecule having at least two, preferably at least four hydroxyl functional groups.

The invention discloses a high-strength PET composite material and a preparation method thereof, and relates to the technical field of polymer materials. The invention first adds fumed silica during the preparation of graphene aerogel, and the siloxy groups on the surface of the fumed silica combine with the hydroxyl groups of the graphene oxide hydrogel, and the aerogel is mixed after heat treatment, which can improve the strength of the composite material and achieve excellent hydrophobic effect; secondly, dopamine is grafted on the surface of the aerogel, and the amino groups of the dopamine and the silanol groups of the silica undergo dehydration condensation to form a composite swelling layered silicate to prepare a hybrid filler; dopamine improves the dispersibility and compatibility of the filler in PET; when fine cracks appear in the composite material due to aging, the swelling layered silicate and the dopamine rainwater work together to achieve a self-repairing effect, and can also remove free radicals, so that the strength of the composite material is stable and the anti-aging performance is improved. The PET composite material prepared by the invention has high strength and anti-aging effects.

The present invention provides a glue dipping machine, and relates to the technical field of glue dipping machines. The glue dipping machine comprises a machine body, a glue spraying side frame is fixedly connected to the left side of the machine body, a reciprocating glue spraying machine is arranged on the upper part of the glue spraying side frame, and a conveying device is arranged inside the glue spraying side frame; a third spiral lifter is arranged on the upper surface of the machine body and located on the left side, a feed roller is arranged at the output end of the third spiral lifter, and an auxiliary roller is arranged inside the machine body and located on the left side. The latex and silicone are fully mixed by the reciprocating glue spraying machine, and then the reciprocating glue spraying is performed, and then the latex and silicone can be fully entered through the extrusion of the feed roller and the auxiliary roller, so that the processed finished product can be exposed to the sun and boiled in water, and the service life is longer, and there is no need to provide a vacuum environment. After processing, the fiber layer contains more glue. After dipping, the excess glue is squeezed twice to reduce the waste of glue, and the final finished product has a better bonding effect.

1. The name of this design product: Silicone mask (E101). 2. Purpose of this design product: This design product is used for human facial beauty. 3. The key design point of this design product lies in the combination of shape and pattern. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The invention belongs to the technical field of personal protection equipment, and particularly relates to a lightweight cut-resistant four-dimensional structure fabric based on high-performance composite fibers and a preparation method of the lightweight cut-resistant four-dimensional structure fabric. The structure is based on a high-performance composite fiber material and a nano silicon carbide embedding technology of high-performance polyethylene fibers, the hardness bottleneck of a single material is broken through, and multi-fiber compatibility is improved through cooperation of polyurethane fiber surface activation and polyurethane fiber anti-melting modification. The gradient twist core sheath yarn is a high-performance composite yarn, and the strength and the flexibility are balanced. In the aspect of the oversleeve fabric structure, a three-dimensional protection system comprising a honeycomb structure, a silica gel liner and a skin-friendly inner layer is adopted, so that the integration of multiple functions of hydrophobicity, fusion resistance and buffering of a light-weight cut-resistant material is realized. Under the EN 388 standard, 5-level cutting prevention can be achieved, a single high-performance polyethylene fiber cutting prevention oversleeve can only reach 3-4 levels, the weight of the composite fiber material is reduced by 40% compared with that of a full aramid fiber oversleeve, the thickness is reduced by 25%, and the composite fiber material can be suitable for complex scenes such as petroleum and electric power.

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

The invention discloses a shale oil carbon dioxide flooding surfactant and a preparation method thereof, and belongs to the technical field of surfactants. The rock oil carbon dioxide flooding surfactant is prepared from the following components in parts by weight: 100 parts of water, 40 to 60 parts of fluorine-containing copolymer, 15 to 25 parts of sodium dodecyl benzene sulfonate, 10 to 20 parts of polyoxyethylene ether surfactant containing siloxy and 5 to 10 parts of nanoparticles. The fluorine-containing copolymer, the sodium dodecyl benzene sulfonate, the siloxy-containing polyoxyethylene ether surfactant and the nanoparticles are compounded, so that on one hand, the surfactant has relatively high salt tolerance and temperature tolerance so as to adapt to the environment of a shale oil reservoir; on the other hand, the surface activity is synergistically improved, the interfacial tension is reduced, the rock surface wettability is changed, and the system stability is enhanced, so that higher recovery efficiency is realized.

The invention discloses a halogen-free flame retardant antistatic nylon, wherein the raw materials of the nylon mainly include a PA6 matrix, a POE graft, a nylon black masterbatch and a modified additive; the modified additive includes a flame retardant-antistatic synergistic additive, a lubricant, an antioxidant and a dispersant; the flame retardant-antistatic synergistic additive includes a microencapsulated halogen-free flame retardant and a compound of modified carbon nanotubes and carbon fibers; the modified carbon nanotubes are grafted with spiropentaerythritol dichlorophosphate (SPDPC) by an organic silicon coupling agent to form a bifunctional organic silane compound. The present application provides a halogen-free flame retardant antistatic nylon and a preparation method and application thereof, which are used to improve the flame retardant and antistatic effects of PA6 and further increase the mechanical properties of PA6.

A silicone mitten is provided. The silicone mitten includes an upper portion defining an inner space for accommodating a hand of a user. The silicone mitten also includes a lower portion having a first opening at a bottom side configured to allow insertion of the hand of the user into the inner space defined by the upper portion. The upper portion includes a plurality of through holes configured to allow air ventilation.

The invention belongs to the technical field of coatings, and discloses an anti-sinking water-based acrylic resin coating and a preparation method thereof.The anti-sinking water-based acrylic resin coating is prepared from, by weight, 110-130 parts of modified water-based acrylic resin, 10-25 parts of modified cellulose nanocrystals, 3-5 parts of a composite additive, 4-6 parts of a dispersing agent, 0.5-2 parts of a defoaming agent, 0.5-2 parts of a flatting agent and 10-20 parts of water; the acrylic resin is modified by using the organic silicon oligomer and the epoxy resin, the film hardness is high, the adhesive force is strong, and the film hardness, the impact resistance, the ultraviolet aging resistance and the flame retardant property of the material are improved by adding the modified cellulose nanocrystals and the composite additive.

The invention relates to the technical field of cables, in particular to a fire-resistant cable suitable for a fire environment heating condition and a preparation method of the fire-resistant cable. The fire-resistant cable comprises an insulating wire core, a fire insulation layer and a sheath layer which are arranged from inside to outside. The fire insulation layer is made of ceramic silica gel cement; the ceramic silica gel cement is prepared from the following components in parts by weight: 20-40 parts of ceramic silica gel, 100-120 parts of methyl vinyl silicone rubber raw rubber, 30-50 parts of white carbon black, 4-6 parts of glass powder, 30-40 parts of aluminum oxide, 20-30 parts of zinc borate, 1-3 parts of zinc oxide, 30-40 parts of mica powder, 7-10 parts of dimethyl silicone oil and 0.3-0.5 part of a platinum catalyst. According to the invention, the mechanical strength and flexibility of the cable at high temperature are improved, and the high temperature resistance and electrical insulation performance of the fire insulation layer and the insulating layer are enhanced.

The invention relates to the technical field of polypropylene materials, in particular to a self-cleaning and scratch-resistant composite PP material and a preparation method thereof.The composite PP material is prepared from, by weight, 55-75 parts of polypropylene resin, 4-10 parts of filler, 1-3 parts of scratch-resistant agent, 5-10 parts of compatilizer, 1-5 parts of surfactant, 0.1-0.5 part of antioxidant and 0.7-1.5 parts of lubricant; the scratch-resistant agent is silicone powder; the filler is a micron-sized filler and a nano-sized filler, the micron-sized filler is one or two of barium sulfate and calcium sulfate, and the nano-sized filler is modified nano silicon carbide or a mixture of modified nano silicon carbide and hydrophobic modified gas-phase nano silicon dioxide; the modified nano silicon carbide is characterized in that the surface of nano silicon carbide is modified through a silane coupling agent; the self-cleaning composite PP material has the advantage that the scratch resistance of the self-cleaning composite PP material is improved.

The invention belongs to the technical field of coatings, and particularly relates to a composite organic silicon anticorrosive coating and a preparation method thereof.The composite organic silicon anticorrosive coating further comprises the following raw materials in parts by weight besides a solvent: 80-95 parts of phenolic epoxy modified organic silicon resin; 1.4 to 3.5 parts of an amine curing agent; 0.08 part to 0.19 part of lithium chloride; 23 parts to 36 parts of filler; the amine curing agent comprises polyamine. According to the composite organic silicon anticorrosive paint disclosed by the invention, under the action of the amine curing agent containing polyamine and lithium chloride, the phenolic epoxy modified organic silicon resin and the filler are mixed and coated on a metal surface, and cross-linking curing of phenolic epoxy molecular chain extension and cross-linking curing of phenolic epoxy molecular chain branch linkage are uniformly carried out; the composite organic silicon anticorrosive coating with excellent impact resistance, hardness and adhesive force is formed.

The invention discloses a nano-microporous composite aerogel material and a preparation process thereof, and belongs to the technical field of aerogel materials, the composite aerogel material comprises modified PTFE dispersion liquid, SiO2 sol, a magnetic hydrophobic modifier, self-repairing microcapsules, reinforced fibers and a surface modifier. The double-shell structure of the self-repairing microcapsule provides excellent mechanical strength and chemical stability, and the self-repairing microcapsule can crack and release the siloxane prepolymer core material during microcrack propagation. The PTFE dispersion liquid is pretreated through plasma-initiated graft polymerization, so that the interface bonding force between the reinforced fiber and the composite aerogel is remarkably improved. According to the treatment method, a chemical bonding layer is formed on the surface of the fiber, and the mechanical interlocking and chemical bonding force of an interface are enhanced, so that the layering phenomenon is avoided, and the stability of the material in a repeated impact environment is further improved.

The invention discloses a microporous breathable fabric as well as a preparation method and application thereof, and relates to the technical field of fabric treatment. The invention discloses a preparation method of a microporous breathable fabric, which comprises the following steps: coating the surface of a base cloth with a polyurethane coating agent, and drying to obtain the microporous breathable fabric, the polyurethane coating agent is prepared from the following raw materials in parts by weight: 100 parts of organic silicon modified polyurethane emulsion, 8 to 11 parts of N, N-dimethylacetamide, 2 to 2.5 parts of n-caprylic alcohol, 5 to 8 parts of a foam homogenizing agent and 1 to 3 parts of a thickening agent PTF; the organic silicon modified polyurethane emulsion is obtained by crosslinking polyurethane with carboxymethyl cellulose through silica sol; the polyurethane coating agent prepared by taking the organic silicon modified polyurethane emulsion as the base material is coated on the surface of the base cloth, so that the fabric has high waterproof performance and also has high air permeability and moisture permeability; the microporous breathable fabric prepared by the invention is applied to the field of outdoor sportswear, and comfortable wearing experience is provided.