1726 results about "Dimethyl siloxane" patented technology

The invention discloses a preparation method and application of a polydimethylsiloxane super-hydrophobic anti-icing and deicing material, and belongs to the technical field of polydimethylsiloxane coatings and anti-icing and deicing coating paints in the fields of ships, airplanes, high-speed rails, ocean engineering and the like, and the preparation method comprises the following steps: preparing PDMS / CNTs porous foam by using polydimethylsiloxane and carbon nanotubes; and carrying out spraying modification on the PDMS / CNTs porous foam by using the CNTs / SiO2 super-hydrophobic composite coating solution, and curing to obtain the polydimethylsiloxane super-hydrophobic anti-icing and deicing material. The prepared polydimethylsiloxane super-hydrophobic anti-icing and deicing material can be used for photo-thermal deicing and defrosting, and has excellent photo-thermal stability, excellent super-hydrophobicity, good corrosion resistance and good wear resistance. The polydimethylsiloxane super-hydrophobic anti-icing and deicing material prepared by the preparation method disclosed by the invention has a good ice melting effect and defrosting capability.

The invention relates to the technical field of polyester fibers, in particular to a high-strength wear-resistant polyester fiber and a preparation method thereof. The invention aims to solve the problem that the mechanical strength and wear resistance of the existing polyester fiber are difficult to consider at the same time. The preparation method comprises the following steps: carrying out esterification and polycondensation on terephthalic acid, ethylene glycol, hydroxyl-terminated polydimethylsiloxane and isophthalic acid to obtain modified PET; the preparation method comprises the following steps: respectively carrying out oxidation treatment on graphene and a multi-walled carbon nanotube, and then adding polyether amine for grafting; carrying out melt blending with PET slices to obtain nano master batches; carrying out melt blending on the chopped glass fibers and the PET slices to prepare micron master batches; and mixing the modified PET, the nano master batch and the micron master batch, carrying out ultrasonic dispersion, adding an auxiliary agent, and carrying out melt spinning, three-section stretching and three-section heat setting treatment to obtain the high-strength wear-resistant polyester fiber. Through the synergistic effect of the components and the process, the prepared fiber has excellent mechanical properties and wear resistance, and has wide application prospects in the fields of clothing, home textiles, industry and the like.

The invention relates to a mildew-proof silicone sealant with high curing rate and high adhesive strength, and belongs to the technical field of adhesives. The anti-mildew coating is prepared from alpha, omega-dihydroxy polydimethylsiloxane, dimethyl silicone oil, fumed silica, phenoxy resin coated nano calcium carbonate, a modified hydroxypropyl-gamma-cyclodextrin loaded mildew preventive, dibutyltin dilaurate, methyltrimethoxysilane and a curing accelerator. According to the mildew-proof silicone sealant with the high curing rate and the high adhesive strength, the surface drying time is 9-13 minutes, the 24-hour curing depth is 6.3-7.2 mm, the adhesive strength is 3.0-3.6 MPa, the tensile strength is 5.8-6.4 MPa, the shear strength is 3.0-3.9 MPa, the elongation at break is 410-457%, and the mildew-proof grade is 0 grade in 30 days, 60 days, 180 days and 360 days.

The invention discloses a film-forming composition and a lip makeup product containing the same. The film-forming composition comprises the following components: phenyl silicone oil, wherein the phenyl silicone oil comprises two or more than two of diphenyl polydimethylsiloxane, trimethyl pentaphenyl trisiloxane, phenyl polytrimethyl siloxane and trimethyl siloxy phenyl polydimethylsiloxane; the viscosity of the phenyl silicone oil at the temperature of 25 DEG C is 50 mPa.s to 500 mPa.s; the film-forming agent comprises at least one of hydrogenated polyisobutene and polyisobutene; and the viscosity of the film forming agent at 75 DEG C is 1500 mPa.s to 2500 mPa.s. The mass ratio of the phenyl silicone oil to the film-forming agent is (2-5): 1. The film-forming composition provided by the invention is applied to a formula system of a lip makeup product, and the phenomena of cup staining, fading and the like of the lip makeup product can be reduced.

The invention relates to the technical field of hydrogen production by alkaline electrolyzed water, in particular to an anti-stripping alkaline electrolyzed water diaphragm casting solution, a diaphragm, a preparation method and application. The anti-stripping alkaline electrolyzed water diaphragm casting solution is prepared from the necessary solvent, the polydimethylsiloxane material, the polysulfone material, the inorganic nano-particles, the pore-forming agent, the cross-linking agent and the catalyst, and the polydimethylsiloxane material, the cross-linking agent and the catalyst act together, so that the enveloping of the inorganic nano-particles can be improved; the mechanical property of the membrane casting liquid on the membrane supporting layer is improved, and the anti-stripping effect is achieved. The diaphragm prepared by adopting the alkaline electrolyzed water diaphragm casting solution shows relatively low sheet resistance and stripping resistance, is good in air tightness, and is suitable for preparing the diaphragm of alkaline electrolyzed water hydrogen production equipment, so that the effects of maintaining free movement of ions in an electrolytic bath and blocking mixing of hydrogen and oxygen are achieved.

The invention relates to a preparation method of a high-antibacterial hydrophobic polyamide fiber. The preparation method comprises the following steps: carrying out melt extrusion grafting on polyamide, a quaternary ammonium salt monomer, an initiator and an auxiliary agent to prepare quaternary ammonium salt grafted polyamide; and carrying out melt blending on the prepared quaternary ammonium salt grafted polyamide, polyamide, cuprous oxide and polydimethylsiloxane to obtain the high-antibacterial hydrophobic nylon composite material. And spinning the high-antibacterial hydrophobic nylon composite material to obtain the high-antibacterial hydrophobic polyamide fiber. The high-antibacterial hydrophobic nylon composite material prepared by the method disclosed by the invention can realize efficient antibacterial performance, and the high antibacterial hydrophobic performance of the prepared polyamide fiber is improved.

The invention relates to the technical field of synthetic fibers, in particular to a high-elasticity textile fiber and a preparation process thereof. The high-elasticity textile fiber is prepared from the polyurethane-polyamide elastomer and the modified diatomite master batch through melt spinning, drafting and winding. According to the invention, hydroxyl-terminated polydimethylsiloxane is used as polyol, and the molar ratio of the polyurethane prepolymer to the polyamide prepolymer is controlled, so that the prepared polyamide-polyurethane elastomer slice has good heat resistance; the molar ratio of isocyanate to polyol and the molar mass ratio of caprolactam to adipic acid are controlled, so that the prepared textile fiber is excellent in mechanical property; 2, 2-dimethylolpropionic acid is used for a chain extension reaction, the molar ratio is controlled, the moisture regain of the prepared textile fiber is 8.58%, and the moisture absorption is high; the diatomite is modified by the quaternary ammonium salt compound, and the addition proportion is adjusted, so that the prepared spinning fiber has good antibacterial performance.

The invention discloses an anti-pollution flashover coating with arc durability, which comprises the following components in parts by weight: 100 parts of hydroxyl-terminated polydimethylsiloxane, 10-25 parts of dimethyl silicone oil, 5-15 parts of a phosphorus flame retardant, 8-20 parts of white carbon black, 5-15 parts of modified mica powder, 15-30 parts of modified calcium carbonate, 10-20 parts of modified glass powder, 5-12 parts of aluminum hydroxide, 5-10 parts of 1, 3-butanediol, 5-10 parts of a flame retardant, 1-5 parts of an anti-aging agent, 1-5 parts of an anti-aging agent, and 1-5 parts of an anti-aging agent. The invention discloses a high-temperature-resistant coating which is prepared from the following components in parts by weight: 0.5-2 parts of 1, 2-bis (trimethoxysilyl) ethane, 5-10 parts of potassium titanate whiskers, 2-6 parts of color paste, 50-150 parts of a solvent, 3-10 parts of a cross-linking agent, 2-6 parts of a silane coupling agent and 1-5 parts of a catalyst. The invention also provides a preparation method of the anti-pollution flashover coating with arc durability. By introducing the modified mica powder, the modified glass powder and the modified calcium carbonate with specific particle sizes and reasonable gradation, the proportion of the filler in the base rubber is ensured, so that the modified mica powder, the modified glass powder and the modified calcium carbonate form a compact and firm ceramic high-temperature-resistant and arc-resistant layer after encountering high temperature of an arc; and the purpose of improving the arc durability is achieved.

The invention discloses a flexible PI heat-conducting insulating film pad and a preparation method thereof, and relates to the field of film pads. The preparation method comprises the following steps: preparing Fe3O4 magnetic heat-conducting core and SiO2 insulating shell composite nanoparticles by a sol-gel method, treating and grafting epoxy groups by a silane coupling agent, performing ring-opening addition with one end amino group of amino-terminated polydimethylsiloxane, and reacting the other end amino group with polyethylene glycol diglycidyl ether, so that two flexible long chains are grafted on SiO2. Due to the modified composite nanoparticles and the flexible long-chain structure, the flexibility of the film pad is remarkably improved; thermal vibration of silicon-oxygen bonds and ether bonds promotes heat transfer, a hydrogen bond network is formed with a PI substrate to improve dispersion stability, particles are orderly arranged under the action of a high-frequency magnetic field to construct a three-dimensional heat conduction network, and heat conduction efficiency is enhanced; the SiO2 isolates the inner core from conducting and improves the insulating property of the film pad by virtue of good insulativity and no free charge in the flexible long-chain polymer. The flexible PI heat-conducting insulating film pad prepared by the invention has the effects of flexibility, heat conduction and insulation.

The invention provides a pouring sealant and a preparation method thereof. The pouring sealant comprises a component A, a component B, a component C and a component D, wherein the component A comprises hydroxyl-terminated polydimethylsiloxane, inorganic filler, phase change microcapsules and surface-modified hexagonal boron nitride nanosheets; the component B comprises dimethyl silicone oil, a silane cross-linking agent, a silane coupling agent and an organic tin catalyst. The pouring sealant provided by the invention can effectively prevent corrosive ions and the like in salt mist from entering a diode area of the junction box while ensuring the sealing performance of the diode of the junction box, prevents the phenomenon of corroding the diode, and controls the temperature rise of the junction box in operation through effective thermal management, so that the service life of the junction box is prolonged. And the service performance and the service life of the photovoltaic module junction box in an offshore environment are improved and prolonged.

The invention relates to the technical field of high polymer material chemistry, and discloses a high and low temperature resistant anti-yellowing optical adhesive and a preparation process thereof, the high and low temperature resistant anti-yellowing optical adhesive comprises the following components by weight: 40-60% of modified organic silicon resin, 20-30% of urethane acrylate, 10-15% of alicyclic epoxy resin, 0.5-5% of a nano inorganic filler, 0.8-2.5% of an anti-yellowing composite reagent, and the balance of a solvent. The coating is prepared from the following components in percentage by weight: 0.5 to 1.5 percent of 2-hydroxy-2-methyl-1-phenyl-1-acetone, 0.1 to 0.3 percent of fluorine modified polyacrylate flatting agent and 0.3 to 1.0 percent of chloroplatinic acid-divinyl tetramethyl disiloxane complex catalyst. The preparation method comprises the following steps: mixing alpha, omega-dihydroxy polydimethylsiloxane and phenyltrimethoxysilane according to a mass ratio of 8: 2-7: 3, adding 0.3-1.0% of a chloroplatinic acid-divinyl tetramethyl disiloxane complex catalyst, and raising the temperature by stages under the protection of nitrogen, so that the glass transition temperature of the adhesive can reach 120 DEG C below zero and 125 DEG C, and the temperature of the adhesive can reach 120 DEG C below zero and 125 DEG C below zero. And the long-term service requirement of the optical device in an extreme temperature environment is met.

The invention discloses a modified polysiloxane coating for a stainless steel pot and a preparation method of the modified polysiloxane coating, and belongs to the technical field of polysiloxane coatings. Comprising the following raw materials in parts by weight: 60-70 parts of hydroxyl polydimethylsiloxane, 20-30 parts of acrylate resin, 15-20 parts of ethanol, 25-30 parts of deionized water, 6-18 parts of modified nano aluminum oxide, 2-4 parts of a friction reducing agent, 0.2-0.4 part of benzophenone and 1-3 parts of a flatting agent. Polysiloxane is used as a main component, so that the coating is endowed with excellent heat resistance; wherein the antifriction agent can improve the wear resistance of the coating; wherein the leveling agent improves the surface flatness of the coating; wherein the modified nano aluminum oxide has good compatibility with polysiloxane, is not easy to agglomerate in the coating, has good dispersity, and can greatly improve the heat resistance, hardness and easy-to-clean property of the coating; the performance is stable and the service life is long; the method has important application value in the technical field of polysiloxane coatings.

The invention discloses a low-temperature self-repairing polysiloxane material based on coordinate bonds and a preparation method and application thereof, and belongs to the field of novel materials.The low-temperature self-repairing polysiloxane material is prepared through the steps that amino of bis (3-aminopropyl)-terminated poly (dimethyl siloxane) and aldehyde group of an aldehyde group small molecule compound are subjected to a Schiff base condensation reaction, and a prepolymer is obtained; and adding metal ions into the prepolymer to carry out a coordination reaction to form a reversible metal coordination bond, and removing the solvent after the reaction is finished to obtain the low-temperature self-repairing polysiloxane material based on the coordination bond. The formed three-dimensional structure contains a large number of reversible metal coordination bonds, so that the rigidity and the mechanical strength of the material are enhanced, and meanwhile, the good self-repairing performance and the machinable recoverability of the material are ensured. The coordination bond-containing self-repairing polysiloxane material can be applied to the fields of adhesives, sealants, rapid self-repairing coatings, composite materials and the like.

The invention provides a wear-resistant, transparent, flexible and fluoride-free super-hydrophobic composite coating and a preparation method thereof. The preparation method comprises the following steps: mixing hydroxyl-terminated polydimethylsiloxane, gamma-aminopropyltriethoxysilane and dibutyltin dilaurate for reaction to obtain a modified precursor solution, adding swelled epoxy resin into the modified precursor solution, and heating for reaction to obtain siloxane modified epoxy resin; the preparation method comprises the following steps: dispersing nano silicon dioxide in an ethyl acetate solution to form a SiO2 suspension; and uniformly mixing the modified epoxy resin with a SiO2 suspension, adding polyether amine as a curing agent, stirring and mixing, and constructing the epoxy resin / hydroxyl-terminated polydimethylsiloxane / nano-silica super-hydrophobic coating on a substrate by adopting an air spraying mode. According to the preparation method disclosed by the invention, the super-hydrophobic coating with excellent transparency and flexibility and good adhesive force and wear resistance can be prepared, and the super-hydrophobic coating has a wide application prospect in the fields of wearable electronic equipment, photoelectric devices and the like.

The invention provides a tightening, anti-wrinkle and soothing multi-effect integrated functional lipstick. The tightening, anti-wrinkle and soothing multi-effect integrated functional lipstick is prepared from the following components in percentage by mass: 10 to 30 percent of modified polydimethylsiloxane, 0.1 to 2 percent of modified silicon dioxide, 1 to 10 percent of pentaerythritol tetraisostearate, 10 to 35 percent of an emollient, 0.01 to 20 percent of a skin conditioner and 0.1 to 50 percent of an auxiliary agent, wherein the modified polydimethylsiloxane is obtained by copolymerizing hexadecyl methacrylate, vinyl-terminated polydimethylsiloxane and methylacryloylated sodium alginate, and the modified polydimethylsiloxane and the methylacryloylated sodium alginate are co-polymerized; the modified silicon dioxide is obtained by reacting hydroxylated silicon dioxide with alkyl acid. According to the invention, ester groups, alkyl chain segments and the like are introduced into the modified polydimethylsiloxane, so that the modified polydimethylsiloxane has good compatibility with other components, the dispersity and stability of active components can be effectively enhanced, and the effects of tightening, resisting wrinkles, relieving and the like of the modified polydimethylsiloxane are improved.

The invention relates to the field of textile processing, and discloses a production process of an antistatic chinlon fabric, which comprises the following specific steps: performing blade coating on chinlon base cloth by using a modified waterborne polyurethane emulsion, and performing pre-drying and baking to obtain the antistatic chinlon fabric, the modified waterborne polyurethane emulsion comprises a waterborne polyurethane emulsion, a hybrid composite filler, a functional additive and the like; the hybrid composite filler is prepared by using a double-bond silane coupling agent to modify nano titanium dioxide and then reacting with modified graphene, and the modified graphene is prepared by using phenyl tri (dimethyl siloxane) silane, a flame-retardant additive and the double-bond silane coupling agent to react and then modifying hydrazine hydrate to reduce graphene oxide; the flame-retardant additive is prepared from phenylphosphoryl dichloride, eugenol, a flame-retardant primary product and sodium as raw materials, the flame-retardant primary product is prepared by reacting formaldehyde with p-hydroxyphenylethylamine and then further reacting with phosphorous acid, and the chinlon fabric prepared by the method not only has a conductive function, but also keeps the mechanical properties of the fabric and is excellent in flame retardance.

The invention discloses an environment-friendly deformation-resistant reed wood composite shaving board and a preparation method thereof, and belongs to the technical field of boards. The reed wood composite shaving board is prepared from wood chips, reed fibers, basalt fibers, lignin fibers, plant extracts, nano silicon dioxide, acetylated distarch phosphate, a C30-45 alkyl cetearyl polydimethylsiloxane cross-linked polymer and a PEG-10 polydimethylsiloxane-vinyl polydimethylsiloxane cross-linked polymer according to a specific proportion. The adhesive is prepared from a methyl methacrylate cross-linked polymer, an MDI adhesive and an organic silicon waterproof agent. All the components are matched for use, the shaving board is prepared in a directional mode, the shaving board has excellent mechanical performance, crack resistance and deformation resistance, the environment-friendly performance is improved, and the use amount of glue is reduced. The novel formaldehyde-free adhesive and the plant extract are adopted to replace traditional formaldehyde-containing glue and a mildew-proof and insect-resistant agent, formaldehyde release is effectively avoided, and a healthier home decoration plate choice is provided for consumers.

The invention provides a high-hydrophobicity anti-pollution flashover coating and a preparation method thereof, and relates to the field of coatings. The silicone rubber composition is prepared from the following raw materials in parts by weight: 80 to 100 parts of hydroxyl-terminated polydimethylsiloxane; 5 to 15 parts of modified nano silicon dioxide; 10 to 30 parts of a composite self-repairing microcapsule; 10 to 25 parts of a flame retardant; 3-8 parts of a cross-linking agent; 0.5-2 parts of a catalyst; 1-5 parts of an accelerant; 40 to 100 parts of a solvent; the modified nano silicon dioxide is fumed silica subjected to surface treatment by a fluorine-containing silane coupling agent and a platinum catalyst; the capsule wall of the composite self-repairing microcapsule is a polylactic acid-glycolic acid copolymer, and the capsule core of the composite self-repairing microcapsule is a mixed solution of a hydroxyl-terminated polydimethylsiloxane oligomer and methyltris (methylethylketoximino) silane. The coating has excellent hydrophobicity, weather resistance and targeted repair function.

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 relates to the field of copper-clad plates, and discloses a low-dielectric-constant high-performance copper-clad plate and a preparation method thereof.The preparation method comprises the specific steps that epoxy resin, phenolic resin, polyphenyl ether modified resin, modified nano silicon dioxide and the like are taken and mixed to obtain a resin glue solution; impregnating glass fabric in the resin glue solution to obtain a prepreg; laminating prepregs, and covering copper foil for hot pressing; the polyphenyl ether modified resin comprises epoxy resin, diallyl cyanate and fluorine-containing polyphenyl ether resin prepared by reaction of polyphenyl ether, bisphenol AF and benzoyl peroxide; the modified nano silicon dioxide is prepared by reacting allyl glycidyl ether, vinyltriethoxysilane and phenyltris (dimethylsiloxane) silane, then grafting with a phosphorus-containing intermediate to prepare a modified additive, and grafting with nano silicon dioxide, and the phosphorus-containing intermediate is prepared by reacting phenylphosphoryl dichloride and eugenol. The copper-clad plate with high flame retardance, high peel strength, heat resistance and low dielectric constant is prepared.

The invention relates to the field of coatings, and discloses weather-resistant and scratch-resistant coated glass and a preparation method thereof.The coated glass comprises a glass substrate and a functional coating formed by thermocuring of a coating composition, and the coating composition comprises waterborne polyurethane, a functional additive and modified graphene oxide; the functional additive is prepared from silica sol and aminopropyl double-terminated polydimethylsiloxane grafted modified nano titanium dioxide; the modified nano titanium dioxide is prepared by enabling 2-(2, 4-dihydroxyphenyl)-2H-benzotriazole and a chloropropyl silane coupling agent to react, grafting the reaction product on the surface of nano titanium dioxide, and then grafting isophorone diisocyanate and pentaerythritol triacrylate; the modified graphene oxide is prepared by grafting a flame-retardant modifier prepared by reacting 3-amino-1, 2, 4-triazole, an amino silane coupling agent, terephthalaldehyde and DOPO with graphene oxide, and the coated glass prepared by the preparation method disclosed by the invention is high in hardness, good in flame retardance and antifouling effect and excellent in wear resistance and ultraviolet resistance.

The invention provides a low-compression-stress low-density heat-conducting gasket and a preparation method thereof.The heat-conducting gasket is prepared from, by weight, 100-300 parts of vinyl silicone oil, 1-3 parts of end chain hydrogen-containing silicone oil, 2-6 parts of side chain hydrogen-containing silicone oil, 0.2-0.6 part of platinum catalyst, 300-700 parts of heat-conducting filler, 0.1-0.5 part of coupling agent and 0.1-0.5 part of inhibitor. Wherein the vinyl silicone oil is prepared by matching two kinds of vinyl-terminated polydimethylsiloxane with different viscosities and vinyl contents; and the heat-conducting filler is a ternary combination of spherical aluminum oxide, spherical boron nitride and beta-type silicon nitride with a lubricating function. The preparation method comprises the following steps: adding the raw materials into stirring equipment, controlling the vacuum degree during stirring by adopting staged negative pressure, stirring under the conditions that the negative pressure is less than or equal to-0.095 MPa,-0.06 to-0.07 MPa and less than or equal to-0.095 MPa in sequence, fully mixing the materials, clustering, transferring to a calender, and carrying out high-temperature vulcanization molding at 120-140 DEG C. The heat-conducting gasket has the characteristics of low compression stress and low density, and the production efficiency is remarkably improved.

The invention belongs to the field of separation membranes, and particularly relates to a preparation method of a reverse osmosis membrane. Comprising the following steps: a) coating a water phase solution containing multifunctional amine on the surface of a supporting layer of a base membrane, then coating an oil phase solution containing multifunctional acyl halide, and drying to form a polyamide separation layer on the surface of the supporting layer to obtain a nascent state membrane; b) soaking the nascent state membrane in an alkaline solution with the pH value of 9-12, and then rinsing to obtain a semi-finished membrane; c) coating a post-treatment solution containing polyvinyl alcohol, polydimethylsiloxane and an amino silane coupling agent on the surface of the polyamide separation layer of the semi-finished product membrane, and drying; d, the membrane treated in the step c is soaked in a 3-chloro-2-hydroxypropyl trimethyl ammonium chloride aqueous solution for quaternization reaction and dried, and the reverse osmosis membrane is obtained.The reverse osmosis membrane prepared through the method has good permeability, hydrophilicity, pollution resistance, antibacterial property and washing resistance.

The invention belongs to the technical field of insulating materials, and particularly discloses an insulating material for an insulating soft sling for extra-high voltage working and a preparation method and application of the insulating material. The insulating material is prepared by mixing ZIF-8 particles and polytetrafluoroethylene powder according to a specific mass ratio and utilizing a dry process. And soaking and coating by using a polydimethylsiloxane (PDMS) solution to obtain a double-layer composite insulating material, and cutting and weaving to obtain the insulating soft sling. The high porosity and excellent gas adsorption performance of ZIF-8 and the insulating performance of PTFE and PDMS are combined, and the comprehensive performance of the insulating material is improved. The introduction of the ZIF-8 particles enhances the mechanical strength and the gas barrier property of the material, the PTFE and the PDMS provide good insulativity and corrosion resistance, and the synergistic effect of the PTFE, the PDMS and the ZIF-8 particles realizes the high-performance application of the insulating sling in a complex environment. Meanwhile, the preparation method and device are easy to operate and low in cost, and large-scale production can be achieved.

The invention discloses a modified fluorosilicone polymer, a two-component silicone sealant and a preparation method of the two-component silicone sealant. The structural formula of the modified fluorosilicone polymer is shown in the specification. The preparation raw materials of the two-component silicone sealant contain the modified fluorosilicone polymer. The modified fluorosilicone polymer provided by the invention is used as a basic polymer to replace conventional simethicone, and is matched with alpha, omega-dihydroxy polydimethylsiloxane, a cross-linking agent, a coupling agent and other components to prepare a two-component silicone sealant which has relatively high normal-temperature and low-temperature strength and also has very good heat resistance and water resistance; the defect that the performance of an existing silicone sealant is reduced under the conditions of high temperature and water immersion is overcome. # imgabs0 #

The invention provides a bi-component silicone sealant with a long storage period and a preparation method thereof, and relates to the field of silicone sealant materials. The method comprises the following steps: preparing a component A from alpha, omega-dihydroxy polydimethylsiloxane, dimethyl silicone oil and a filler; the preparation method comprises the following steps: carrying out physical and chemical dual dehydration on alkoxy-terminated 107 glue, a filler and a dehydration material, and then carrying out pretreatment by using ketoxime siloxane to obtain a modified base material; pretreating a cross-linking agent, a coupling agent and a catalyst to obtain a mixed vulcanizing agent; preparing a component B from the improved base material, hydrophobic white carbon black and a mixed vulcanizing agent; the component A and the component B are mixed according to the volume ratio of (1-2): 1, and the two-component silicone sealant is prepared. The two-component silicone sealant disclosed by the invention does not have obvious thickening in a 12-month long-term storage process, can keep stable breaking time and vulcanization effect in a 12-month period of validity, and has very important significance on the scenes such as foreign trade, ocean transportation and the like which require long storage periods.

The invention relates to the technical field of polymer composite materials, and discloses a nano-ceramic-based composite insulating coating and a preparation method thereof, and the coating is prepared from a composite resin matrix, a composite functional ceramic filler, a double-reactivity organosilicon linker and an initiator. Wherein the composite resin matrix is composed of vinyl-terminated polydimethylsiloxane and a vinyl ether functionalized fluorocarbon copolymer, and a soft and rigid interpenetrating network structure is formed. The composite functional ceramic filler is prepared from needle-shaped silicon nitride, flaky hexagonal boron nitride, nano silicon dioxide, nano cerium oxide and nano barium titanate. According to the invention, a chemical bonding interface is constructed between the inorganic filler and the organic resin, and the synergistic effect of the composite matrix and the multifunctional filler is optimized, so that the coating has excellent adhesive force, flexibility and thermal shock resistance, obtains high volume resistivity and breakdown strength, and meets the insulation protection requirements under harsh working conditions.

The invention relates to the technical field of fabric waterproofing agents, in particular to a polyurethane modified organic silicon fluoride-free waterproofing agent and a preparation method thereof. The polyurethane modified organic silicon fluoride-free waterproof agent is prepared from the following raw materials in parts by mass: 5 to 15 parts of hexamethylene diisocyanate, 5 to 15 parts of butyl acrylate, 1 to 5 parts of methyl methacrylate, 40 to 60 parts of octamethylcyclotetrasiloxane, 10 to 30 parts of alpha, omega-dihydroxy polydimethylsiloxane and 5 to 10 parts of gamma-aminopropyl methyl diethoxy silane. The invention relates to a silane coupling agent, which is prepared from the following raw materials in parts by weight: 1 to 5 parts of glycidyl ether oxypropyl trimethoxy silane, 0.1 to 1 part of tetramethylammonium hydroxide, 0.1 to 1 part of triethylamine, 2 to 5 parts of tetraethoxysilane, 0.2 to 0.75 part of ammonia, 0.1 to 1 part of silane coupling agent KH-570, 0.01 to 0.1 part of dibutyltin dilaurate, 1 to 5 parts of epsilon-caprolactam, 1 to 2 parts of emulsifier and 0.1 to 1 part of initiator. The fabric treated by the method has good softness and excellent hydrophobic effect.

The invention provides a fluorine removal agent composition and a preparation method thereof, and belongs to the technical field of fluorine removal agents. The invention aims to improve the fluorine removal efficiency of the polyaluminum chloride, and designs a compound formula with a synergistic effect for the polyaluminum chloride. According to the composition, aluminum polychlorid is used as a main component, bentonite is adopted for achieving the dispersing and thickening effects, the composition is in a suspension and gel state in water, and contact between fluorine ions and a fluorine removal agent is promoted; meanwhile, diatomite is adopted as an adsorbent, so that the removal effect of fluorine ions is improved. As a surfactant, sodium citrate can form an emulsion in water to remove part of pollutants and relieve the influence of the pollutants on the fluorine removal process. In addition, diethylenetriamine pentaacetate, polydimethylsiloxane, lanthanum nitrate and other components are added and cooperate with polyaluminum chloride, and the fluorine removal effect is fully improved. In the aspect of the preparation method, a compounding scheme is designed according to physical characteristics of different components, and the method has low requirements on equipment and has high process efficiency.

The invention relates to the technical field of battery materials, and discloses a flame-retardant anti-shrinkage coating self-crosslinking lithium battery diaphragm and a forming process thereof, and the flame-retardant anti-shrinkage coating self-crosslinking lithium battery diaphragm is composed of a battery base membrane and coatings coated on the surfaces of the two sides of the base membrane; the battery base membrane is prepared from the following raw materials in parts by weight: 80 to 120 parts of polypropylene fiber, 5 to 10 parts of sodium dodecyl benzene sulfonate and 1 to 3 parts of polydimethylsiloxane; the coating is prepared from the following components in parts by weight: 10 to 20 parts of modified silicon dioxide coated aluminum oxide containing long-chain fatty acid, 80 to 150 parts of amino-terminated triethoxy silane modified polyurethane emulsion, 3 to 5 parts of defoaming agent polydimethylsiloxane and 2 to 4 parts of thickening agent sodium carboxymethyl cellulose. The thickness of the battery base film is 10-30 [mu] m, and the thickness of the coating is 3-8 [mu] m. The lithium battery diaphragm disclosed by the invention has relatively good flame-retardant and shrinkage-resistant performance, and meanwhile, the service life of a battery can be effectively prolonged.