208results about How to "Reduce surface tension" patented technology

A boron-containing polyethylene glycol fatty acid ester surfactant belongs to the field of organic chemistry and functional materials. The boron-containing polyethylene glycol fatty acid ester surfactant is prepared as follows: polyethylene glycol (PEG), boric acid and fatty acid are used as raw materials, first esterification reaction of the PEG and the boric acid is performed, then esterification reaction of the PEG and the fatty acid is performed to obtain boron-containing poly ethylene glycol fatty acid ester; by changing the species of fatty acids and catalysts and molecular weight of the PEG, the esterification rate can be enhanced, the boron-containing poly ethylene glycol fatty acid ester product can be used as a surfactant, and the boron-containing poly ethylene glycol fatty acid ester can reduce water surface tension and has good emulsifying properties.

The invention relates to a preparation method of a photovoltaic welding strip, the photovoltaic welding strip, a photovoltaic module and a preparation method, and the preparation method comprises the following steps: S1, carrying out the oxide removal and annealing treatment of an oxygen-free copper wire at the same time, and obtaining an annealed copper strip after cooling; s2, in the protection environment of inert gas, the annealed copper strip is immersed in molten brazing filler metal alloy liquid for surface tin plating, and after cooling, a plated copper strip with an alloy plating layer is obtained; s3, oxide on the surface of the plated copper strip is removed; s4, immersing the plated copper strip subjected to oxide removal into a film forming substance, and drying to obtain a film forming welding strip; wherein the film forming substance does not contain carboxyl. According to the method, oxide removal and annealing treatment are carried out at the same time, the photovoltaic welding strip which is high in preparation efficiency and can be welded without participation of scaling powder can be achieved, the photovoltaic welding strip is combined with the preparation technology of a photovoltaic module, and a high-reliability module can be obtained.

The invention discloses a plasma-assisted liquid metal self-activation method and application thereof.The self-activation method comprises the steps that patterned liquid metal photoresist is subjected to plasma treatment, hydrophilic groups are introduced into liquid metal nanoparticles and a silicon substrate, and then an elastomer solution is directly poured on a micro-scale liquid metal pattern; and when the elastomer film is stripped from the silicon substrate, due to the interaction of hydrophilic groups, the adhesive force and cohesion between the liquid metal nanoparticles and the silicon substrate and between the liquid metal nanoparticles are enhanced, so that the local stress concentration is enhanced, and the discrete particles are more easily broken and fused to form a conductive path. This process maintains high quality of the lithographically defined microscale liquid metal pattern while converting it from an insulator to a high conductor.

The invention provides a fluorine-containing polymer wetting reversal agent suitable for shale reservoir protection as well as a preparation method and application of the fluorine-containing polymer wetting reversal agent. The preparation method of the reverse wetting agent comprises the following steps: adding ethylamine, triethylamine and deionized water into a reaction flask, and adding perfluorooctanoyl chloride into the system for reaction; after the reaction is completed, potassium hydroxide and 2-chloroethanol are continuously added for reaction; and after the reaction is completed, obtaining the N-ethyl-N-hydroxyethyl perfluorooctanamide. Adding nanoparticles, a silane coupling agent and ammonia water into the dispersant solution, and carrying out a modification reaction to obtain a modified nanoparticle solution; and adjusting the pH value of the obtained modified nanoparticle solution to 5-9, adding N-ethyl-N-hydroxyethyl perfluorooctanamide, introducing nitrogen to remove oxygen, adding an initiator, and carrying out thermal initiation polymerization reaction to obtain the composite material. The wetting reversal agent disclosed by the invention has excellent wetting reversal performance and a certain filtration reduction effect, and provides innovative thinking for development of a high-performance water-based drilling fluid technology.

The invention discloses a triazine desulfurizer and a preparation method thereof, and belongs to the technical field of gas purification. The triazine desulfurizer is mainly prepared from the following raw materials in percentage by weight: 20 to 50 weight percent of triazine derivative, 10 to 15 weight percent of sterically hindered amine, 3 to 7 weight percent of stabilizer, 1 to 3 weight percent of synergist, 0.5 to 1.5 weight percent of penetrant, 0.5 to 1.5 weight percent of inhibitor, 1 to 2 weight percent of additive and the balance of water, the preparation method of the triazine derivative comprises the following steps: adding 2-(diphenylphosphino) ethylamine into a toluene solvent, adding a paraformaldehyde aqueous solution in batches under a stirring condition, and reacting for 2-8 hours to obtain the triazine derivative. According to the triazine desulfurizer and the preparation method thereof provided by the invention, the triazine derivative and the sterically hindered amine are taken as a host, and the stabilizer, the synergist, the penetrant, the inhibitor and the assistant are compounded, so that the scaling trend of the triazine desulfurizer in an oil and gas well can be slowed down, the dissolution rate of hydrogen sulfide and the mass transfer rate in a solution are increased, and the desulfurization reaction is promoted; the desulfurization effect and the desulfurization rate are improved, and meanwhile, a very good scale inhibition effect is also achieved.

The invention provides a degreasing agent and a body-in-white pretreatment process. The degreasing agent comprises a compound agent, and the compound agent comprises the following components in percentage by weight: 1%-5% of hydroxide, 50%-60% of carbonate, 20%-30% of silicate, 5%-10% of sodium pyrophosphate and 13%-20% of a chelating agent. The body-in-white pretreatment process comprises the following steps: a flood water washing procedure: washing and preheating a plate of a body-in-white; a pre-degreasing step in which a pre-degreasing bath solution is sprayed onto the surface of the plate by means of spraying; a main degreasing procedure, specifically, a main degreasing bath solution containing the degreasing agent is used for conducting degreasing treatment on the plate, the free alkalinity of the main degreasing bath solution is controlled to range from 16 Pt to 19 Pt, and the oil content of the main degreasing bath solution is controlled to be smaller than 3.0 g / L; and an industrial water washing procedure: washing the plate to remove the main degreasing bath solution remaining on the surface of the plate.

The invention discloses an alkali corrosion liquid for silicon in the semiconductor industry and a corrosion method of the alkali corrosion liquid. According to the alkali corrosion liquid, a corrosion method of slow acid corrosion and sufficient alkali corrosion is adopted, the surface roughness of the silicon wafer can be effectively reduced, in addition, in the alkali corrosion liquid, a surfactant, an active additive, sodium dodecyl polyoxyethylene ether sulfate and the like are matched with alkali, so that the surface tension of the alkali is further reduced, the corrosion rate is higher, and the service life of the silicon wafer is prolonged. The surface tension can be effectively reduced, the affinity of the etching liquid and a silicon substrate is improved, the selective etching capability to silicon dioxide in the etching process can be enhanced, corrosion to the silicon substrate is reduced, and a more uniform and accurate etching effect is achieved. Through measurement, the surface roughness Ra of the silicon wafer obtained by the corrosion method is less than or equal to 0.1 mu m, and the single metal cation is lt; and the corrosion rate can reach 1-1.5 microns / minute and is stabilized within + / -5%.

The present invention relates to the technical field of composite membranes, and discloses a PO composite membrane and a preparation method thereof. The PO composite membrane prepared by the present invention comprises a base membrane and a coating liquid; wherein the base membrane is formed by coextrusion of an inner layer, a secondary outer layer and an outer layer, and the coating liquid is a mixture of the following raw materials in parts by weight: 25-35 parts of aluminum sol, 5-8 parts of modified hyperbranched polymer, 2-4 parts of polyvinyl pyrrolidone, 1-3 parts of sodium lauryl sulfate, 5-7 parts of polyacrylate resin, 4-6 parts of modified chitosan, and 45-55 parts of deionized water; after the base membrane is coated with the coating liquid, a composite membrane is obtained, which has excellent adhesion, hydrophilicity and drip anti-fogging performance.

The invention discloses an aero-engine runner cleaning agent and a use method thereof. The aero-engine runner cleaning agent is prepared from the following raw material components in parts by weight: 65-80 parts of water, 7-9 parts of sodium metasilicate, 5-8 parts of a composite surfactant, 1-3 parts of triethanolamine oleate and 7-15 parts of saturated isoparaffin. The using method of the cleaning agent comprises the steps that the engine is not detached from an airplane, in the cold running or slow running state of the engine, the cleaning agent is atomized into water particles of 50-100 micrometers through an injection method, the water particles are injected into an air flow channel through an engine cleaning nozzle, and deposits such as carbon, salinization, dust dirt and oil dirt on the engine air flow channel are effectively cleaned on line. The engine runner cleaning agent has the characteristics of no damage, rapidness and no corrosion to a base material, can be used for on-line cleaning of salinization, oil dirt, dirt, carbon deposition and other sediments on the engine runner, and is less in engine cleaning agent consumption and high in cleaning efficiency compared with traditional engine runner cleaning.

The application relates to the field of contaminated gas treatment, and particularly discloses a high-absorption VOCs absorbent and a preparation method thereof. The high-absorption VOCs absorbent comprises the following components in parts by weight: a solubilizing composition 20-30%; a cosurfactant 10-15%; solvent oil 40-50%; and water in the remainder. The solubilizing composition comprises component A, wherein the component A comprises polyoxyethylene nonionic surfactant and paeonol, and the weight ratio of the polyoxyethylene nonionic surfactant to the paeonol is 1: (0.1-0.2). The high-absorption VOCs absorbent and the preparation method thereof comprise the following steps: S1, uniformly mixing the solubilizing composition and the cosurfactant, adding water, and dropwise adding solvent oil to obtain the high-absorption VOCs absorbent. The high-absorption VOCs absorbent can be used for industrial absorption of solvents in waste gas, has the advantages of high absorption rate and an absorption amount of 141.5-145.7 mg / g after 50 hours of ventilation, and the preparation method has the advantages of few steps, simplicity and high efficiency.

This invention relates to the field of surfactant technology and discloses a biodegradable amphoteric surfactant and its preparation process. The process involves reacting a diol compound and a diacyl chloride compound, followed by a reaction with 1,3-propanesulfonate lactone to obtain the biodegradable amphoteric surfactant. Both the main chain and side chains of this surfactant contain a large number of biodegradable ester groups, exhibiting a high biodegradability rate and making it environmentally friendly. The side chains of this surfactant contain a large number of amphoteric betaine ion groups, among which a large number of sulfonic acid anions have strong coordination and complexation effects with iron ions. After complexation, the concentration of iron ions in the solution is significantly reduced, making it suitable as a complexing agent for better application in the iron complexation desulfurization process. Complexing iron ions can prevent iron ion precipitation, thus maintaining the good oxidizing properties of iron ions and reducing hydrogen sulfide to sulfur.

The invention discloses efficient closed-pore high-stability slurry and a preparation method thereof, a lithium ion battery and electric equipment, and relates to the technical field of lithium batteries, the efficient closed-pore high-stability slurry comprises water, core-shell microspheres, a heat stabilizer, a wetting auxiliary agent and a dispersing auxiliary agent, the core-shell microspheres comprise first core-shell particles and second core-shell particles, the core of the first core-shell particle is a mixture of a heat conducting agent and a flame retardant, or a composition of any one or more of the heat conducting agents, and the shell of the first core-shell particle is a mixture of a thermosensitive accelerator and a thermosensitive main agent, or a composition of any one or more of the thermosensitive accelerators; the core of the second core-shell particle is a mixture of a heat conducting agent and a flame retardant, or a composition of any one or more of the flame retardants, and the shell of the second core-shell particle is a mixture of a thermosensitive accelerator and a thermosensitive main agent, or a composition of any one or more of the thermosensitive main agents. The material has the advantages of early quick and synchronous response to temperature change, excellent thermal stability and excellent flame retardancy.

This application discloses a method for preparing ultra-high purity citric acid monohydrate based on supercritical CO2, belonging to the field of citric acid preparation technology. The method includes the following steps: dissolving citric acid monohydrate in an organic solvent to prepare a citric acid solution; spraying the citric acid solution into a supercritical CO2 environment to crystallize the citric acid using the supercritical anti-solvent effect; performing dynamic washing with pure supercritical CO2; and obtaining ultra-high purity citric acid monohydrate crystals after depressurization and drying. The citric acid monohydrate product prepared by this method has high purity, high light transmittance, low total metal ion content, controllable crystal habit, and low organic solvent residue, meeting the stringent requirements of high-end applications such as electronic and pharmaceutical grades.

The invention relates to the technical field of oil and gas well reservoir transformation, and provides a permeability-enhancing surfactant for shale gas fracturing and a preparation method thereof, and the permeability-enhancing surfactant is synthesized from 3, 4-difluoromaleic anhydride, alkyl polyoxyethylene polyoxypropylene alcohol and sodium isethionate. According to the permeability-enhancing surfactant for shale gas fracturing, fluorine atoms in aliphatic fluoride enable the permeability-enhancing surfactant to have very good low surface tension and wettability, and meanwhile, epoxy groups are introduced into gemini surfactant molecules, so that the wetting effect can be improved, and the permeability-enhancing surfactant is environmentally friendly. Therefore, aiming at the characteristics of a shale reservoir, from the aspects of excellent surface performance, cost reduction, environmental friendliness and the like, the permeability-enhancing surfactant for shale gas fracturing, provided by the invention, has a relatively good practical application value.

The invention relates to the technical field of chemical material preparation, and particularly discloses a safe preparation method of a short fluorocarbon alkyl sulphobetaine surfactant, a product and application, and the safe preparation method comprises the following steps: (1) in a solvent system I, reacting epoxy chloropropane with secondary amine to obtain an intermediate 1; (2) in a solvent system II, reacting the intermediate 1 with sodium hydrosulfide or a hydrate thereof to obtain an intermediate 2; (3) reacting the intermediate 2 with short fluorocarbon alkyl iodide to obtain perfluoroalkyl thioether propyl tertiary amine; and (4) carrying out sulfonation treatment on perfluoroalkyl thioether propyl tertiary amine to obtain the short-fluorocarbon alkyl sulphobetaine surfactant. According to the invention, by designing a synthetic route without using a high-risk reagent, the safety and operability of the process are remarkably improved, and the sulphobetaine surfactant with excellent acid, alkali and salt chemical stability and excellent surface activity is successfully prepared; and a key material and a safe and reliable preparation process are provided for development of a new-generation efficient environment-friendly fire extinguishing agent.

The invention discloses a low-temperature-resistant negative electrode zinc paste and a low-temperature alkaline zinc-manganese battery containing the zinc paste. The negative electrode zinc paste comprises the following components in parts by weight: 60-65 parts of zinc powder, 1-2 parts of a composite conductive agent, 0.1-0.3 part of a composite corrosion inhibitor and 35-38 parts of a low-temperature electrolyte; the low-temperature electrolyte comprises a multi-element nonionic surfactant system, a multi-element nano anti-freezing agent system and a mixed solution A, the 3.9 ohm discharge capacity of the battery under the condition of-40 DEG C is larger than or equal to 60% compared with the capacity retention rate at normal temperature, the interface impedance amplification is smaller than or equal to 15%, the hydrogen evolution amount is reduced by 80% on year-on-year basis, the process is compatible with an existing production line, and the battery is suitable for polar scientific investigation and electronic equipment in plateau and cold regions.

The utility model relates to the technical field of porridge cooking pots, in particular to a novel anti-overflow porridge cooking pot which comprises a pot body, an inner pot arranged in an inner cavity of the pot body and a pot cover arranged at the top end of the pot body, a supporting block is fixedly connected to the pot body, and an installation block is fixedly installed on the pot cover. An anti-overflow assembly is arranged on the pot cover, the anti-overflow assembly is used for preventing porridge liquid in the porridge cooking pot from overflowing outwards when the porridge cooking pot is used, and the anti-overflow assembly comprises a mounting plate fixedly mounted on the pot cover. By arranging the anti-overflow assembly, when the congee cooking pot is used, after internal steam drives the steam switch to be turned on, the electric push rod pushes the container to move downwards, so that edible oil flows into the oil receiving opening in the oil column on the bubble poking plate, and the bubble poking plate is driven by the rotary electromagnet to rotate to enter congee in the inner pot; and the surface tension of water can be reduced through the edible oil, so that foam is easier to break and dissipate, and the possibility of overflowing is reduced.

The present invention relates to the field of surfactant technology, and discloses a long-acting bactericidal surfactant and its application in washing powder. The present invention performs Schiff base condensation reaction on DL-tyrosine and glutaraldehyde, and then performs esterification reaction with alkyl acyl chloride compound, and then reduces with sodium borohydride, and undergoes epoxy ring-opening reaction in 2,3-epoxypropyltrimethylammonium chloride to obtain a novel long-acting bactericidal surfactant. The long-acting bactericidal surfactant contains a diquaternary ammonium salt antibacterial group, and the minimum inhibitory concentration MIC for bacteria such as Escherichia coli is only 0.391ug / mL. When the mass concentration of the long-acting bactericidal surfactant of the present invention is 0.2-2g / L, the surface tension of the solution is only 58.1-12.0mN / m, and the lower the surface tension, the better the wetting, emulsification and dispersibility, which is conducive to the practical application of surfactants in washing powder, laundry detergent, etc.

This invention relates to the field of ceramic composite metal casting technology, and discloses a method and apparatus for producing ceramic composite iron-based wear-resistant castings. The production method involves treating ceramic particles with decontamination, coarsening, sensitization, activation, and chemical plating to obtain modified ceramic particles; mixing and stirring the modified ceramic particles and a coating material to obtain a ceramic preform; fully heating the ceramic preform; then removing it and placing it into a mold cavity to obtain a mold; heating the mold in a tank; pouring molten iron after heating; and cooling after casting to obtain the ceramic composite iron-based wear-resistant casting. This invention also discloses a production apparatus for ceramic composite iron-based wear-resistant castings. This invention, employing the above-mentioned method and apparatus for producing ceramic composite iron-based wear-resistant castings, promotes the composite of ceramic and molten metal from a casting process perspective, ensuring that the molten metal can penetrate the fine pores of the ceramic preform, resulting in a good interface bonding between the high-chromium cast iron and ceramic particles, without unbonded or microscopic gaps.

This invention discloses a Tibetan bath composition compound and its preparation method, relating to the field of daily chemical products technology. The Tibetan bath composition compound consists of a ternary complex of scutellaria baicalensis hydroxypropyl-β-cyclodextrin nanoshell powder, Bacillus subtilis, Tibetan medicine composition, starch, anhydrous citric acid, sodium bicarbonate, calcium citrate, crospovidone, and magnesium stearate. Bacillus subtilis is used to ferment the ternary complex of scutellaria baicalensis hydroxypropyl-β-cyclodextrin nanoshell powder to obtain a fermentation-modified porous carrier, which is then loaded with the Tibetan medicine composition to form a Tibetan medicine inclusion powder. This not only achieves efficient drug delivery through a triple mechanism of biomodification, metabolite synergy, and structural optimization, but also forms a quaternary system with Terminalia chebula. The effervescent effect also enhances the penetration of Tibetan medicine components, which is beneficial for better exerting the antibacterial and anti-inflammatory effects of active substances, and significantly improving fungal infections and eczema-related skin problems.

The application discloses a kind of nano-permeable resin coating for construction in high-humidity water environment of desulfurization chimney lining anticorrosion, chimney lining includes reducing agent layer, reinforcing agent layer, primer layer, topcoat layer in turn from inside to outside, nano-permeable resin primer and topcoat can be permeated into the concrete matrix to form the anticorrosion layer of "matrix-coating", "mixing element integration", so that it not only has excellent acid corrosion resistance, but also has high and low temperature alternation and airflow scouring performance, solve the problem that chimney lining anticorrosion layer fails due to stress corrosion, also has good construction performance, solve the difficult problem that chimney lining anticorrosion layer construction period is short.

This invention relates to the field of concrete admixtures, specifically to an anti-mud polycarboxylate superplasticizer, its preparation method, and its application. The anti-mud polycarboxylate superplasticizer provided by this invention comprises, by weight, the following raw materials: 100-180 parts of unsaturated polyether monomer, 5-10 parts of unsaturated carboxylic acid monomer, 2-5 parts of air-entraining monomer, 5-10 parts of anti-mud monomer, 10-20 parts of oxidant, 0.4-0.6 parts of reducing agent, 5-7 parts of chain transfer agent, and 150-300 parts of water; the air-entraining monomer and the anti-mud monomer have specific structures. The simultaneous introduction of specific anti-mud monomers and air-entraining monomers into the anti-mud polycarboxylate superplasticizer of this invention not only reduces clay adsorption but also provides better dispersibility and anti-mud effect at lower dosages, increasing the overall workability of concrete and improving concrete performance.

The invention relates to the technical field of organobentonite, in particular to a preparation method of nanoscale organobentonite, which is characterized in that fine crushing and purification treatment is performed on bentonite raw ore powder, and specific acidizing treatment steps are combined, so that not only can impurities be effectively removed, but also high-purity nanoscale preparation of bentonite can be realized; the activity and the reaction performance of the bentonite are improved, and a foundation is laid for subsequent sodium treatment and lithiation treatment; secondly, sodium bentonite and lithium bentonite are prepared through sodium treatment and lithiation treatment respectively, then the composite bentonite is prepared through mixing, the lithiation bentonite has excellent expansibility, thickening property and suspension property in water, low alcohol and low ketone, the sodium bentonite has good dispersity and cohesiveness, and the composite bentonite is prepared through mixing the sodium bentonite and the lithium bentonite. After the two are mixed and organically modified, the advantages of the two can be integrated, and the physical properties of the bentonite are further improved, for example, the expansion multiple is increased, the viscosity is increased, and the suspension stability is enhanced.

The invention provides a green, environment-friendly, efficient and mild detergent and a preparation method and application thereof, and belongs to the technical field of detergents. Comprising the following raw materials in parts by weight: 10 to 20 parts of a mild surfactant, 5 to 8 parts of an auxiliary surfactant composition, 1 to 2 parts of a plant extract, 0.5 to 1 part of vitamin C, 0.1 to 0.3 part of vitamin E, 0.2 to 0.5 part of vitamin B5, 0.005 to 0.007 part of essence, 0.1 to 0.3 part of EDTA (Ethylene Diamine Tetraacetic Acid) disodium and 60 to 80 parts of deionized water. The prepared green, environment-friendly, efficient and mild detergent is good in foaming effect, stable in chemical property, mild, low in toxicity, good in washing effect and good in degradability, due to addition of the auxiliaries, the sense of the detergent is smoother, the fragrance of the detergent is more loved, and the detergent has wide application prospects.

The application discloses a kind of building waste self-reinforced recycled aggregate preparation methods, comprising the following steps: (1), the building waste containing red brick and hardened cement paste is crushed, and red brick material and the block of hardened cement paste containing are separated out;(2), red brick material is mixed with the solution containing carboxyl ether and is ground, and the modified slurry containing nanoscale red brick particle material is obtained;(3), the block of hardened cement paste containing separated out is immersed in modified slurry, after immersion is completed, the block of hardened cement paste containing is taken out and is dried, and building waste self-reinforced recycled aggregate is obtained;In the solution containing carboxyl ether, solvent is water, and the concentration of carboxyl ether is 0.1-0.8mol / L;The particle size range of nanoscale red brick particle material is 50-200nm;During the process of immersion, the mixture is heated and stirred, and the heating temperature is 40-80 DEG C.The method can prepare building waste self-reinforced recycled aggregate with high strength and low water absorption.

The invention relates to the technical field of coatings, in particular to dual-curing conformal coating as well as a preparation method and application thereof. The dual-curing three-proofing paint is composed of siloxane containing oxazolidinyl groups, a UV oligomer containing isocyanate groups, a diluting monomer, a water removal agent, a photoinitiator, a wetting agent, a catalyst and the like. Wherein the siloxane containing the oxazolidinyl group has two functional groups of long carbon chain oxazolidine and siloxane, the long carbon chain oxazolidine can realize rapid moisture curing of oligomer and does not generate volatile harmful substances, and meanwhile, hydrolysis residues of the long carbon chain oxazolidine can plasticize the conformal coating and reduce adhesion loss caused by shrinkage. On the other hand, siloxane groups can form a stronger physical or chemical action with a base material, so that the adhesive force to the base material is improved. In conclusion, the three-proofing paint has excellent low surface tension and high wettability, can effectively wet the polluted surface of the PCB and form interaction, has the characteristics of excellent adhesive force, salt mist resistance, high flexibility and the like, and has very high market application value.

The invention discloses an antibacterial fabric for underwear and a preparation method of the antibacterial fabric, and relates to the technical field of textile fabrics. According to the invention, 2-(chloromethyl) 1, 3-butadiene and dodecyl dimethyl tertiary amine are used as reaction raw materials to prepare quaternary ammonium salt, and then the quaternary ammonium salt and vinyl-terminated silicone oil are subjected to a polymerization reaction to generate an organosilicon quaternary ammonium salt antibacterial agent, so that bacterial adhesion can be effectively prevented, and the antibacterial performance of the fabric is enhanced; ethylene glycol and 2, 5-dimercapto terephthalic acid are condensed to obtain sulfydryl-containing polyester fibers, ethylene glycol disodium salt is added to obtain modified polyester fibers, the antibacterial performance of the fabric is improved, meanwhile, the moisture absorption performance of the fabric is improved, and the fabric is easy to dye; soaking the modified polyester fiber into the organosilicon quaternary ammonium salt antibacterial agent mixed solution, performing water treatment, drying, and weaving to obtain the antibacterial fabric for underwear. The prepared antibacterial fabric for underwear has excellent antibacterial, moisture-absorbing and easy-to-dye effects.

The invention relates to a heating power cable, belonging to the technical field of cables, comprising a PTC core tape, an insulating layer and a sheath layer. The interior of the heating power cable is protected by improving the performance of the sheath layer. When preparing the sheath material of the sheath layer, a reactive additive is added. The reactive additive and the raw material can be cross-linked with the active groups on the surface of the filler during the blending or extrusion process. On the one hand, the dispersion compatibility of the inorganic mixture in the matrix can be improved, and the flame retardancy and mechanical properties of the sheath material can be improved at the same time. On the other hand, the cross-linked structure as a part of the sheath material has a good bonding effect. At the same time, the hydroxyl group of the reactive additive itself can also be cross-linked to form a continuous structure, showing hydrophobicity, cooperating with the structure of the perfluoroalkyl group, and can effectively reduce its surface tension, showing excellent hydrophobicity and oleophobicity, and having good protective performance for the cable.

The application discloses a kind of strong penetration cooking-resistant type water-based textile paper tube two-component epoxy dip coating and preparation method thereof, belong to water-based paint technical field.The coating is composed of A component and B component, A component uses the composite wetting penetrant that self-emulsifying submicron water-based epoxy dispersion and sulfobutane acid dioctyl sodium salt, acetylene glycol surfactant are composed of;B component selects fast-drying water-soluble modified polyamine curing agent, adds reactive curing accelerator.By the synergy of small particle size epoxy dispersion and composite wetting penetrant, the technical problem that traditional water-based paint is poor in paper tube fiber permeability, weak adhesion is solved;At the same time, through the synergistic effect of fast-drying curing agent and accelerator, the drying time is shortened.The coating has the characteristics of low VOC content, environmental protection safety, strong penetration to paper tube substrate, fast drying speed, excellent adhesion, and the dense paint film formed after curing has the performance of saturated water vapor cooking resistance.

This invention discloses an oil sludge extraction system, comprising a separation tower, multiple partition units, and an inlet pipe. The separation tower includes a feed section and an extraction section from top to bottom. The feed section has an inlet and an outlet. The inlet is for the oil sludge and extraction solvent to enter. The extraction section is used to extract light tar from the oil sludge and has a light oil outlet for discharging the light tar. The multiple partition units are spaced apart from top to bottom within the extraction section. Each partition unit includes multiple partition tubes spaced apart along a first direction and extending along a second direction. The inlet pipe is located on the separation tower and extends one end into the extraction section. The pipe wall of the inlet pipe has multiple spaced-apart vents for introducing heating gas into the extraction section. The oil sludge extraction system of this invention has the advantages of high oil yield.