451 results about "Dimethyl siloxane" patented technology

The invention discloses a flexible pressure sensor based on ionized hydrogel and a preparation method thereof. The sensor adopts a sandwich layered structure of a flexible composite electrode, an ionized water gel dielectric layer and a flexible composite electrode, ionized water gel is used as a dielectric layer, and an upper flexible electrode and a lower flexible electrode are prepared from a multi-walled carbon nanotube / polydimethylsiloxane (MWCNTs / PDMS) composite material; the surface, making contact with the dielectric layer, of the electrode is copied through an abrasive paper template method to form a micron-sized rough structure. Under the action of external pressure, the effective contact area between the microstructure electrode and the ionized water gel dielectric layer and the equivalent electrode distance change, so that the interface electric double-layer capacitance is regulated and controlled, and high-sensitivity conversion from a pressure signal to a capacitance signal is realized. The flexible pressure sensor is simple in structure and excellent in flexibility, can be further integrated into a pressure sensing array, and is suitable for the fields of wearable electronics, electronic skin, man-machine interaction and the like.

The invention relates to the technical field of tobacco leaf element analysis, in particular to a detection method for volatile compounds in tobacco leaves and a clustering analysis method for the tobacco leaves. The method for detecting the volatile compounds in the tobacco leaves comprises the following steps: drying and pulverizing tobacco leaves to be detected to prepare sample powder of the tobacco leaves to be detected; extracting the mixed solution of the tobacco leaf sample powder to be detected and the internal standard solution by adopting a headspace solid-phase microextraction method to prepare an extracting solution; carrying out gas chromatography-mass spectrometry detection on the extract liquor; wherein an extraction head used by the headspace solid-phase microextraction method is a divinylbenzene / carbon molecular sieve / polydimethylsiloxane composite coating extraction head, and the parameters of the headspace solid-phase microextraction method are as follows: the extraction temperature is 75-85 DEG C, the extraction time is 45-55 minutes, the desorption time is 4-6 minutes, and the equilibrium time is 3-7 minutes. The method for detecting the volatile compounds in the tobacco leaves, provided by the invention, can effectively separate and analyze the volatile components, and is simple and efficient.

The invention relates to the technical field of foaming materials, in particular to a shoe material preparation process for finished shoes based on supercritical physical foaming and the finished shoes. The preparation method comprises the following steps: 1) weighing a matrix, octadecyl polyhedral oligomeric silsesquioxane, an active group-containing styrene-acrylonitrile copolymer, a polydimethylsiloxane block copolymer, an epoxy functional group-containing olefin copolymer, a nano silicon dioxide dispersion and a processing aid, uniformly mixing, blending, extruding, granulating and drying to obtain a blended material, wherein the matrix, the octadecyl polyhedral oligomeric silsesquioxane, the active group-containing styrene-acrylonitrile copolymer, the polydimethylsiloxane block copolymer, the epoxy functional group-containing olefin copolymer, the nano silicon dioxide dispersion and the processing aid are mixed uniformly; the preparation method comprises the following steps of (1) preparing a polymer, (2) plasticizing the blended material to form a preformed blank, injecting supercritical gas, and fully dissolving the supercritical fluid in the polymer at the temperature of 150-180 DEG C and the pressure of 10-20MPa for 1-3 hours, (3) reducing the pressure to normal pressure within 10 seconds at the pressure reduction rate of less than or equal to 2MPa / s, and (4) cooling and shaping at the temperature of 60-80 DEG C to obtain the shoe material.

The invention relates to the technical field of fibers, in particular to a controlled-release anti-aging polypropylene fiber and a preparation method thereof. The fiber is prepared from polypropylene homopolymer resin, a reaction type interface layer master batch and a controlled release anti-aging master batch, the reactive interface layer master batch is formed by reacting and extruding maleic anhydride modified polypropylene and 3-aminopropyl terminated polydimethylsiloxane, so that the interface compatibility is enhanced; the controlled-release anti-aging master batch contains hydroxyl and peracetylated cyclodextrin grafted siloxane carriers, and an ultraviolet absorbent, a light stabilizer and an antioxidant are included, so that the controlled release of an anti-aging agent is realized. The preparation method comprises the steps of master batch preparation, final mixing granulation, melt spinning and drafting setting. The fiber strength is remarkably improved, the boiling water shrinkage rate is reduced, the strength retention rate after ultraviolet aging reaches 93% or above, the yellow index change is small, and the outdoor service life is prolonged.

The invention discloses a high-elasticity anti-aging foamed silica gel sealing element, and belongs to the technical field of sealing materials. The silicone rubber is prepared from raw materials including methyl vinyl silicone rubber, fumed silica, hydroxyl-terminated polydimethylsiloxane and the like according to specific parts by weight through the processes of mixing, foaming vulcanization and the like. The apparent density of the sealing element is 0.3-0.6 g / cm < 3 >, the Shore A hardness is 25-45 degrees, the tensile strength is larger than or equal to 2.5 MPa, the elongation at break is larger than or equal to 350%, the performance retention rate is high after the sealing element is aged for 1000 h at the temperature of 150 DEG C, and the sealing element has excellent elasticity and aging resistance. The surface of the anti-slip sealing gasket can be provided with anti-slip textures to meet sealing requirements in the fields of automobiles, electronics and the like, and is long in service life and high in practicability.

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 relates to the technical field of high polymer materials, and particularly discloses a flame-retardant heat-conducting silica gel insulating coating and a preparation method thereof. The invention discloses a flame-retardant heat-conducting silica gel insulating coating. Comprising the following components: polydimethylsiloxane, aluminum hydroxide, modified nano aluminum oxide, a phosphorus-nitrogen flame retardant, silicon dioxide, methyltris (methylethylketoxime) silane, vinyltris (methylethylketoxime) silane, dibutyltin dilaurate, a diluent, amino propyl triethoxy silane, propyl trimethoxy silane and ethyl aminopropyl trimethoxy silane. And the polydimethylsiloxane is formed by compounding polydimethylsiloxane with the viscosity of 1,500 cp and polydimethylsiloxane with the viscosity of 20,000 cp. According to the invention, by finely blending the proportion of various functional components, especially the optimal combination of polydimethylsiloxane, modified nano aluminum oxide, the flame retardant and the filler, the flame retardance and thermal conductivity of the coating are effectively improved, and meanwhile, good insulativity and mechanical properties are ensured.

The invention belongs to the technical field of bionic cilium sensors, and particularly discloses a magnetic bionic cilium and vesicle complex and a preparation method and application thereof.The preparation method comprises the following steps that S1, a cilium array male mold is prepared; then carrying out oxygen plasma treatment, silanization and curing stabilization; s3, injecting the magnetic composite precursor into a polydimethylsiloxane female die, applying pressure, and striking off; and S4, coating the mold surface with an Ecoflex precursor, performing thermocuring forming, performing magnetization treatment, and performing stripping to obtain the magnetic bionic cilia. According to the magnetic bionic cilia, the vesicle complex and the preparation method and application of the magnetic bionic cilia, the vesicle complex and the preparation method and application of the magnetic bionic cilia, high-magnetic signal output is achieved while the deformability of the cilia is guaranteed, the magnetic bionic cilia is used for non-contact real-time hemodynamic monitoring, meanwhile, specific response release of the vesicle complex is achieved, and a new thought is provided for design of responsive vascular implants.

The invention discloses a preparation method of an environment-friendly photo-thermal super-hydrophobic coating and application of the environment-friendly photo-thermal super-hydrophobic coating on a road, and aims to solve the problems that the deicing and anti-icing effects of an existing photo-thermal super-hydrophobic coating are limited, and fluorine-containing low-surface-energy components are mostly adopted and are difficult to degrade. The preparation method comprises the following steps: 1, dispersing epoxy resin, polydimethylsiloxane and a PDMS curing agent into absolute ethyl alcohol to obtain dispersion liquid; 2, adding nano silicon dioxide particles and a silane coupling agent into the dispersion liquid; 3, continuously adding hydroxylated multi-walled carbon nanotubes to obtain a dispersion liquid; 4, adding an epoxy resin curing agent; and 5, coating the pavement with the photo-thermal super-hydrophobic material dispersion liquid, and curing to obtain the photo-thermal super-hydrophobic coating. According to the invention, an epoxy resin and polydimethylsiloxane composite system is adopted as a matrix, excellent adhesive force and flexibility are taken into account, a stable bonding layer can be formed on a road base material, and long-term durability of the coating under the conditions of freeze-thaw cycle, vehicle friction and wind and rain erosion is ensured.

The invention discloses a blended neutron / gamma discrimination polysiloxane scintillator and a preparation method thereof. The polysiloxane scintillator is composed of a matrix, a primary fluorescent dye, a secondary fluorescent dye and a cross-linking agent. A matrix of the scintillator is a copolymer of methyl phenyl polysiloxane and phenyl methyl siloxane, a main fluorescent dye is 2, 5-diphenyl oxazole (PPO), a secondary fluorescent dye is selected from 7-diethylamino-4-methylcoumarin (MDAC), and a cross-linking agent is 1, 3-divinyl-1, 3-diphenyl-1, 3-dimethyl siloxane. The obtained polysiloxane scintillator has good stability and can be used for neutron detection and neutron / gamma discrimination in a strong irradiation field environment.

This invention discloses a weather-resistant, high-hardness composite anti-corrosion coating and its preparation method, belonging to the field of anti-corrosion coating technology. The preparation method includes: firstly, synthesizing an epoxy resin containing dynamic disulfide bonds by reacting dithiodibenzoic acid and epichlorohydrin in an alkaline aqueous phase; secondly, constructing a low surface energy siloxane network using hydroxyl-terminated polydimethylsiloxane and methyltriethoxysilane; subsequently, introducing chlorzoxazone and N-acetyl-p-aminophenol as composite organic corrosion inhibitors, blending them with the resin to obtain a composite base material; finally, adding graphene, carbon nanotubes, and inorganic anti-corrosion fillers, and cross-linking and curing to form a film using a polyamine curing agent. This invention suppresses microcracks through the dynamic stress relief of disulfide bonds, combined with the weather-resistant barrier of the siloxane network, the active interface passivation of the heteroatom corrosion inhibitor, and the three-dimensional synergistic mechanical bonding of carbon-based nanomaterials, achieving a perfect unity of ultra-strong corrosion resistance, excellent weather resistance, and high mechanical hardness in the coating.

The invention relates to the field of building waterproofing, and discloses a plasticizer and a preparation method thereof, a composition for a polyether waterproof coating, the polyether waterproof coating and a preparation method of the polyether waterproof coating. The method for preparing the modified polyether plasticizer comprises the following steps: (1) in a protective atmosphere, in the presence of a base catalyst, stirring and mixing alpha, omega-dihydroxy polydimethylsiloxane and alkylene oxide to obtain an intermediate I; and (2) contacting and mixing a neutralizer with the intermediate I to obtain the modified polyether plasticizer, relative to 100 parts by weight of the alpha, omega-dihydroxy polydimethylsiloxane, the use amount of the base catalyst is 0.1 to 1 part by weight, the use amount of the alkylene oxide is 400 to 900 parts by weight, and the use amount of the neutralizer is 0.12 to 1.2 parts by weight. The silane modified polyether waterproof coating prepared from the modified polyether plasticizer provided by the invention has obviously better weather resistance.

The invention discloses a high-wear-resistance door and window material and a preparation method thereof, and relates to the technical field of building materials. The preparation method of the high-wear-resistance door and window material comprises the following steps: providing vinyl trimethoxy silane and an alkaline solution, mixing, and carrying out a first reaction to obtain a resin prepolymer; providing bis (3-aminopropyl) terminated poly (dimethyl siloxane) and isocyano ethyl methacrylate, mixing, and carrying out a second reaction to obtain a curing agent; providing an initiator, mixing the initiator with the resin prepolymer and a curing agent, and carrying out curing treatment to obtain a cured product; and carrying out etching treatment on the cured product to obtain the high-wear-resistance door and window material. The high-wear-resistance door and window material obtained by the method provided by the invention has high wear resistance, super-hydrophobic performance and high light transmittance, and has wide prospects in the aspects of extension of high-end application scenes such as high-performance doors and windows, curtain walls and special optical protection components.

The present application relates to the technical field of micro-nano functional materials, and particularly relates to a high-efficiency light-heat conversion and wear-resistant super-hydrophobic coating, a preparation method thereof and an application thereof in ice prevention and removal, the preparation method adopts ammonium persulfate as an oxidant to initiate polymerization of pyrrole on the surface of halloysite nanotubes to generate polypyrrole, so as to obtain a halloysite nanotube composite material wrapped by polypyrrole. The super-hydrophobic coating is obtained by mixing the composite material with low-surface-energy polydimethylsiloxane, and the coating layer formed by the super-hydrophobic coating has the characteristics of high roughness and low surface energy, and thus has excellent hydrophobic performance. The coating layer also has good light-heat effect, flexibility, elasticity, mechanical performance, high-temperature resistance and durability. In addition, by adding hydrophobic nano-SiO2, the super-hydrophobic performance of the coating layer is further improved, and the hardness and wear resistance of the coating layer are also enhanced. Finally, the coating layer has excellent light absorption capacity and light-heat conversion efficiency, and realizes the performance of efficient protection and ice layer removal in the application of ice prevention and removal.

This invention provides an organosilicon sealant composition for anti-fog automotive lights and its preparation method. The organosilicon sealant composition for anti-fog automotive lights comprises the following components: α,ω-dihydroxy polydimethylsiloxane, a first crosslinking agent, a second crosslinking agent, a catalyst, a filler, a coupling agent, and a plasticizer. The first crosslinking agent has 3 alkoxy functional groups, the second crosslinking agent has ≥4 alkoxy functional groups, and the D3-D10 content of α,ω-dihydroxy polydimethylsiloxane is 0.01-0.05 wt%. This invention utilizes a polyalkyloxysilane derivative prepared from a tertiary amine polyol and an isocyanate-based silane coupling agent as a non-volatile second crosslinking agent, which has high activity, does not reduce the reaction rate, and can reduce the amount of the volatile first crosslinking agent. Furthermore, using α,ω-dihydroxy polydimethylsiloxane with a low D3-D10 content as the base adhesive can further reduce volatile components, making the automotive lights less prone to fogging.

This invention discloses an electronic potting compound for encapsulating new energy power systems and its preparation method, belonging to the field of adhesive preparation technology. The electronic potting compound for encapsulating new energy power systems consists of component A and component B. Component A includes polypropylene glycol, dicyclohexylmethane diisocyanate, hydroxyl-terminated polydimethylsiloxane, bismuth-zinc composite catalyst, N,N-dimethylethanolamine, porous alumina supported filler, composite halogen-free flame retardant, thixotropic agent, defoamer, and surface-modified calcium sulfate whisker fibers. Component B includes polypropylene glycol and dicyclohexylmethane diisocyanate. The electronic potting compound prepared by this invention exhibits good thermal conductivity and electromagnetic shielding capabilities after curing, while also possessing high mechanical strength.

This invention discloses a novel siloxane defoamer synthesis and production process. The defoamer comprises 2-10 parts of hydrophobically treated fumed silica or nano-silica filler, 40-70 parts of a concentrated silicone oil composition, 40-70 parts of high-viscosity polydimethylsiloxane, and 100-150 parts of a fatty alcohol-propylene oxide polymer. Two types of concentrated silicone oil compositions are used, exhibiting diverse structures and chain lengths, totaling 16 types, with clearly defined preparation methods. The filler undergoes special hydrophobication treatment, and the preparation process includes mixing with the concentrated silicone oil, reaction heating, and centrifugal separation. The production process involves mixing the components in a specific ratio, followed by high-speed stirring, addition of oleic acid, and heating to obtain the novel siloxane defoamer. The components of this invention work synergistically to enhance defoaming and foam suppression capabilities. The process is simple, easy to operate and control, and the product has strong versatility. It performs excellently in high-viscosity oily systems, effectively solving foaming problems in various oily systems. It is low-cost, high-efficiency, and its performance is adjustable, exhibiting good stability and compatibility.

The invention discloses a polyurethane filling adhesive as well as a preparation method and application thereof, and relates to the field of cable materials. The polyurethane filling adhesive comprises hydrophobic polyurethane, an anti-hydrolysis agent, a heat conducting agent and a flame retardant; the hydrophobic polyurethane is formed by polymerizing a soft segment, a hard segment and an amine chain extender, and the soft segment comprises at least one of polytetrahydrofuran ether, dihydroxybutyl-terminated polydimethylsiloxane and aminopropyl terminated polydimethylsiloxane; the anti-hydrolysis agent comprises triisopropanolamine, a carbodiimide anti-hydrolysis agent and an epoxy silane anti-hydrolysis agent. Hydrophobic polyurethane adopts a soft segment containing hydrophobic groups, hydrolysis is inhibited from the source, meanwhile, the hydrolysis resistance is improved in cooperation with the ternary compound hydrolysis-resistant agent, a compact highly-physical cross-linked network is constructed, hydrolysis is inhibited from a chemical structure and a physical barrier community through cooperation of the three components, and long-acting hydrolysis-resistant protection is achieved; and the stability of heat-conducting property and flame-retardant property of the material is maintained in a severe environment in which a high-voltage cable is used.

This utility model relates to a reagent bottle, belonging to the technical field of laboratory equipment. The reagent bottle includes a bottle body, a connecting cap, and a Luer cap; the bottle mouth of the bottle body connects to the large opening of the connecting cap; a Luer connector is provided on the side of the connecting cap away from the bottle mouth, and the Luer connector connects to the Luer cap; a silicone gasket is provided between the bottle body and the connecting cap, and a polydimethylsiloxane coating is provided at the contact point between the bottle body and the silicone gasket. The connecting cap is used to close the large bottle mouth, the Luer cap is used to close the connecting cap, the bottle mouth is used to inject reagent into the bottle, the Luer connector is used to remove reagent to prevent waste during removal, and the polydimethylsiloxane coating is used to reduce reagent residue at the bottle mouth and on the bottle body; the entire assembly is connected by threads, and the triple-seal design achieves overall sealing of the reagent bottle.

The invention relates to the technical field of preparation of printing ink, in particular to a preparation method of high-water-resistance printing ink, which comprises the following steps: taking 50-80 parts of self-crosslinking waterborne polyurethane resin, adding 3-8 parts of silane coupling agent and 2-5 parts of hydroxyl-terminated polydimethylsiloxane, stirring for 1.5-3 hours, adding 1-4 parts of amino modified nano silicon dioxide, and carrying out ultrasonic dispersion to obtain amphiphilic modified resin; adding 1-3 parts of a titanate coupling agent into 15-30 parts of pigment, stirring, and adding mica powder and a dispersing agent to obtain a core-shell pigment and filler dispersion liquid; adding 2-6 parts of perfluoroalkyl ethyl acrylate copolymer into 5-12 parts of polyvinylidene fluoride emulsion, stirring, and adding a defoaming agent and an ultraviolet absorbent to obtain an interpenetrating network functional aid solution; adding the pigment and filler dispersion liquid into the amphiphilic modified resin, stirring at 60-80 DEG C, introducing nitrogen, and adding the auxiliary liquid for cross-linking in batches; and dropwise adding a thickening agent, and filtering to obtain the high-water-resistance printing ink. The ink prepared by the invention is excellent in water resistance, and an ink layer is not easy to fall off and swell; the storage is stable and the viscosity change is small; the device adapts to multiple scenes, and is resistant to chemical corrosion and ultraviolet aging; and printing is smooth, film forming is uniform, environmental protection is achieved, and industrial production is facilitated.

The invention discloses a high-temperature hot melt adhesive, a preparation method of the high-temperature hot melt adhesive and a transfer-ironed trademark. The high-temperature hot melt adhesive comprises the following components in parts by weight: 98-105 parts of polyether type thermoplastic polyurethane; 8 to 25 parts of hydroxyl-terminated polydimethylsiloxane; 0.5 to 2 parts of an anti-hydrolysis agent; 2 to 10 parts of a tackifier; 0.5 to 2 parts of a viscosity modifier; 1-2 parts of an antioxidant; and 0.5 to 1 part of a filling material. The high-temperature-resistant waterproof coating has high bonding fastness, high temperature resistance and excellent hydrolysis resistance, and can meet the requirement that outdoor sports products and individual brands pass special stone washing, chemical washing and high-temperature washing tests. In addition, the high-temperature hot melt adhesive can meet the requirements of heat resistance (the ironing temperature does not exceed 150 DEG C) of the fabric, production efficiency (the ironing time does not exceed 20 seconds) and garment comfort (the hot melt adhesive is soft and elastic).

The invention discloses a self-repairing anti-twisting shielding composite cable, and relates to the technical field of cables, the self-repairing anti-twisting shielding composite cable comprises a conductor, an insulating layer, a shielding layer and an outer sheath which are sequentially sleeved from inside to outside, and the insulating layer and / or the outer sheath are / is obtained by extruding a self-repairing polyurethane elastomer; the self-repairing polyurethane elastomer is prepared from the following components in parts by weight: 100 parts of soft-segment polyol, 40 to 80 parts of isophorone diisocyanate, 12 to 20 parts of a chain extender containing disulfide bonds and 5 to 12 parts of a chain extender containing ureido, and the soft-segment polyol is selected from at least one of polytetrahydrofuran ether glycol and amino-terminated polydimethylsiloxane. The self-repairing anti-twisting shielding composite cable is high in self-repairing capacity, excellent in anti-twisting performance and stable in shielding performance.

The application discloses a low-warp and easy-to-grind printed film encapsulation adhesive, a preparation method and an encapsulation structure, relates to the technical field of semiconductor chip encapsulation, and the printed film encapsulation adhesive comprises the following components in percentage by mass: 81-88% of a filler, 4-8% of an alicyclic epoxy resin, 1-2% of an MQ silicone resin, 1-2% of a polydimethylsiloxane, 5-9% of an acid anhydride curing agent, 0.3-0.5% of a surfactant, 0.1-0.2% of an accelerator, 0.2-0.4% of a leveling agent and 0.1-0.2% of carbon black; wherein the filler is composed of first and second spherical silicas, the particle size of the first spherical silica is 3-25 mu m, and the particle size of the second spherical silica is 1-5 mu m. By selecting fillers with different particle sizes and introducing the MQ silicone resin and the polydimethylsiloxane into the epoxy system, the application reduces the curing shrinkage of the film encapsulation adhesive and improves the dispersibility, thereby effectively reducing the warp and water absorption of the film encapsulation adhesive after curing, improving the grinding efficiency and the chip encapsulation efficiency.

The application discloses an environment-friendly fluorine-free super-hydrophobic coating material and a preparation method thereof, and belongs to the technical field of super-hydrophobic coating materials. The preparation method comprises the following steps: mixing hyperbranched polyurethane, ethyl acetate and propylene glycol methyl ether acetate for 10-20 min, then adding polydimethylsiloxane and octadecyl isocyanate to carry out mixing reaction for 60-80 min, then adding multistage microspheres to carry out ultrasonic treatment for 15-30 min, and then adding Isopar G, isophorone diisocyanate, silane coupling agent KH-560, dibutyl tin dilaurate and triethylenediamine to carry out stirring and dispersion for 30-50 min, so as to obtain the environment-friendly fluorine-free super-hydrophobic coating material. The environment-friendly fluorine-free super-hydrophobic coating material prepared by the application has good super-hydrophobicity, self-repairing function and wear resistance.

A film-forming composition and a lip makeup product comprising same. The film-forming composition comprises the following components: a phenyl silicone oil and a film-forming agent, wherein the phenyl silicone oil comprises two or more of diphenyl dimethicone, trimethyl pentaphenyl trisiloxane, phenyl trimethicone and trimethylsiloxyphenyl dimethicone, and the viscosity of the phenyl silicone oil at 25°C is 50 mPa•s to 500 mPa•s; and the film-forming agent comprises at least one of hydrogenated polyisobutene and polyisobutene, and the viscosity of the film-forming agent at 75°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 is applied to a formulation system of a lip makeup product, and can reduce the phenomena of cup staining, color fading, etc. of the lip makeup product.

The invention discloses a blue copper peptide composition for repairing scars and a preparation method of the blue copper peptide composition, and belongs to the technical field of preparation of biological medicine preparations. The composition is prepared from freeze-dried powder of copper blue peptide, polyquaternium-73, asiaticoside, nicotinamide, polydimethylsiloxane, betaine-propylene glycol ionic liquid and a gel matrix. According to the invention, the blue copper peptide is coated in a permeation enhancing system constructed by the betaine-propylene glycol ionic liquid and the HEPES, so that the enzymolysis loss of the blue copper peptide is reduced, and the biological activity of the blue copper peptide is maintained; a temperature-sensitive gel matrix is constructed by carboxyl esterified modified sodium alginate and poloxamer, the carboxyl esterified modified sodium alginate is prepared by grafting n-butyl alcohol to a hydrophilic main chain of sodium alginate through a Fischer esterification method, the gel matrix is in a liquid state at normal temperature, after the gel matrix is smeared on a scar part, the gel matrix is converted into semi-solid gel under the influence of body temperature, and slow and continuous release of blue copper peptide can be achieved. The traditional Chinese medicine composition has the effect of repairing scars and is suitable for chronic scars needing long-term nursing.

The application relates to the technical field of cable material manufacturing, and discloses a light-weight flexible wear-resistant electrical equipment connecting cable, a sheath of the connecting cable being made of raw materials including the following: polyester type thermoplastic polyurethane elastomer, styrene-acrylonitrile copolymer, maleic anhydride grafted polyolefin elastomer, blocked isophorone diisocyanate, wear-resistant premixed solution containing a catalyst, slow-release foaming master batch and functional additives; wherein the wear-resistant premixed solution containing the catalyst contains hydroxyl-terminated polydimethylsiloxane and a bismuth octoate catalyst, the slow-release foaming master batch contains modified azodicarbonamide foaming agent and carrier resin, and the functional additives contain antioxidants and carbodiimide hydrolysis stabilizers. According to the application, the hydroxyl-terminated polydimethylsiloxane containing the catalyst and the blocked isocyanate are introduced into the polyurethane matrix in cooperation through a reaction extrusion process, the isocyanate groups are unblocked at high temperature, and the organic silicon chain segment is chemically bonded with the matrix resin.