23results about How to "Reduce penetration rate" patented technology

The present application relates to the field of filling glue, and in particular to a high-flowability epoxy resin encapsulated bottom filling glue and a preparation method thereof. The high-flowability epoxy resin encapsulated bottom filling glue, in parts by mass, has the following raw materials: 40 to 60 parts of epoxy resin composition, 10 to 15 parts of active diluent, 20 to 25 parts of curing agent, 1 to 2 parts of accelerator, 20 to 35 parts of modified filler, 1 to 4 parts of coupling agent, 1 to 1.5 parts of leveling agent, and 1 to 3 parts of flame retardant. The epoxy resin encapsulated bottom filling glue prepared in the present application not only has good stress impact resistance, mechanical properties and flow properties, but also can maintain excellent moisture resistance, water resistance, corrosion resistance, acid and alkali resistance and other properties, thereby greatly improving the application performance of the filling glue and having very excellent application prospects.

The invention relates to the technical field of flue-cured tobacco planting, in particular to a flue-cured tobacco-rice-green manure rotation planting method and a transplanting device thereof.The planting method specifically comprises the following steps that sowing and seedling raising are conducted on flue-cured tobacco, and after seedling raising is completed, the transplanting device is used for transplanting and planting flue-cured tobacco seedlings on a ridged field; harvesting tobacco leaves after the flue-cured tobacco is mature; secondly, planting late rice after the tobacco leaves are harvested, and sowing astragalus sinicus 20-25 days before the late rice is harvested; and then turning, pressing and returning to the field after the milk vetch blooms in the middle ten days of April in the next year, and planting first-season rice. By introducing the astragalus sinicus, the content of organic matter in plough layer soil is increased, combination of use and cultivation of cultivated land and improvement and fertilization are achieved, the fertility of tobacco field soil is improved, and four-planting four-harvesting in two years is achieved by circularly planting the flue-cured tobacco, the late rice, the astragalus sinicus and the ratooning rice.

The invention relates to the field of finish paint, in particular to chemical-resistant electroplating finish paint as well as a preparation method and application thereof. The chemical-resistant electroplating finish paint is prepared from the following raw materials in parts by mass: 30 to 50 parts of modified acrylate, 15 to 30 parts of epoxy resin, 5 to 10 parts of modified particles, 3 to 6 parts of photoinitiator, 2 to 3 parts of flatting agent, 0.5 to 1 part of defoaming agent, 3 to 10 parts of pigment and 20 to 40 parts of solvent. The finally prepared electroplating finish paint not only has excellent durability and chemical resistance, but also can be further improved in water resistance, aging resistance and mechanical properties, so that the performance requirements of the existing electroplating finish paint are effectively met, and the electroplating finish paint can be effectively applied to the field of cosmetic packaging and has wide application prospects. And meanwhile, the resistance to chemical substances (such as perfume, emulsion and the like) is also effectively improved, and the product has a very excellent application prospect.

This invention discloses a tooling mold for manufacturing brake discs and a method for manufacturing brake discs. The tooling mold includes an insertion section whose shape matches the shape of the heat dissipation holes and achieves an interference fit after insertion. The end of the insertion section is fixedly connected to a sliding groove via a connecting rod. A sliding plate, which cooperates with the sliding groove, enables position adjustment of the insertion section. This invention offers flexible overall adjustment and can be used for combined adjustment of the spacing for brake discs of different sizes, facilitating operator operation. The method of manufacturing brake discs using this invention reduces the difficulty of drilling holes in carbon-carbon composite brake disc preforms, reducing processing volume; it reduces the time and material consumption required for brake disc vapor deposition; it improves the smoothness of the inner surface of the heat dissipation holes, reducing processing volume and avoiding dynamic imbalance and airflow velocity uniformity issues caused by rough holes; it promotes uniform product material, ensures uniform expansion coefficient, and reduces the probability of product cracking.

The application discloses an ultrafiltration membrane for sewage treatment and a preparation method thereof, and relates to the field of membrane separation technology. The method comprises the following steps: firstly, ZnO@PHEMA-Ag nanoparticles are prepared, and the nanoparticles are pretreated, modified, grafted and loaded with silver nanoclusters; then, maleic anhydride grafted PVDF and modified MXene are prepared; then, a composite casting solution is prepared, and the solution is cast into a film and then immersed into a polyvinyl alcohol coagulation bath containing dimethylformamide to form a film; finally, the finished ultrafiltration membrane is obtained through ultraviolet crosslinking post-processing. The ultrafiltration membrane has excellent anti-pollution performance through functional nanoparticles, substrate modification and process optimization.

The present invention provides a single-stage high-fold salt concentration method based on membrane capacitance deionization technology, comprising the following steps: S1. introducing a liquid to be treated and charging the electrode with a forward voltage, and when the amount of electricity in the electrode reaches 80-100% of the capacity of the electrode, stopping introducing the liquid to be treated; S2. introducing a concentrated liquid mother liquor and discharging the electrode with a reverse voltage, and when the amount of electricity in the electrode reaches 50-70% of the capacity of the electrode, stopping introducing the concentrated liquid mother liquor; S3. introducing a liquid to be treated and charging the electrode with a forward voltage, and when the amount of electricity in the electrode reaches 80-100% of the capacity of the electrode, stopping introducing the liquid to be treated; looping steps S2 and S3 until the liquid to be treated is treated; wherein the capacity of the electrode is the amount of electricity that the electrode has when it reaches an adsorption saturation state. The single-stage high-fold salt concentration method couples the electrosorption process with membrane separation, and has a strong ability to adjust the water and salt migration flux in the concentration stage.

The utility model discloses a hydrophobic textile fabric which comprises a fabric base layer, and a waterproof wire net is woven on the surface of the fabric base layer; the waterproof layer is arranged on the upper surface of the fabric base layer; the thermal insulation layer is arranged on the lower surface of the fabric base layer; and the lining layer is arranged on the lower surface of the thermal insulation layer. According to the waterproof fabric, the waterproof layer serves as a first waterproof protection layer, and the waterproof wire net woven on the surface of the fabric base layer serves as a second waterproof protection layer, so that on one hand, the waterproof wire net can reduce the direct contact area between water drops and the fabric base layer, and on the other hand, the fabric base layer woven by the waterproof wire net is more compact; the permeation speed of water drops to the inner layer of the fabric can be effectively slowed down.

The utility model relates to battery technical field discloses a kind of anti-infiltration lithium battery tab rubber structures, including shell, the outer wall of shell is fixedly connected with two baffle, the outer wall of two baffle is fixedly connected with tab, the outer wall of two tabs is provided with sealing mechanism, the outer wall of two tabs is provided with heat dissipation mechanism, the sealing mechanism includes two silicon dioxide, the outer wall of two silicon dioxide is fixedly connected in the outer wall of tab, the outer wall of two silicon dioxide is fixedly connected with the outer wall of two adhering layers, the outer wall of two adhering layers is fixedly connected with extension layer. In the utility model, when electrolyte exosmosis, pass through extension propagation path, electrolyte is transmitted along path in spiral groove, slow down the penetration rate, be absorbed by water-absorbing particle again, accidental exosmosis electrolyte is guided temporary storage, and elastic sealing layer is adaptively sealed, prevent external water vapor from entering reaction while blocking electrolyte penetration.

The invention belongs to the technical field of mine excavation, and particularly relates to an ionic type rare earth mine liquid injection system which comprises an intelligent mine control system, a liquid injection funnel module, an electromagnetic flowmeter module, a heating module, an electromagnetic inductor module, an electromagnetic valve module and a pressure probe. The other end of the electromagnetic flowmeter module is connected with the control platform and is responsible for measuring the flow and flow velocity of liquid flowing through the pipeline; therefore, the underwater depth of the probe can be obtained according to the measured pressure, and an electric signal is transmitted back to a control center in real time. In addition, liquid level marking lines can be set, the electromagnetic valve is controlled to stop liquid injection if the liquid level marking lines exceed the liquid level marking lines, the electromagnetic valve is controlled to start liquid injection if the liquid level marking lines are smaller than a certain liquid level marking line, and generally, the distance between the liquid level and the ground surface is not smaller than 30 cm.

The application relates to the technical field of steel wires, and discloses a corrosion-resistant galvanized steel wire and a preparation method thereof. The corrosion-resistant galvanized steel wire is obtained by galvanizing a steel wire body through plating aid, and the steel wire body is composed of the following components in percentage by weight: C 0.15%-0.20%, Mn 0.28%-0.45%, Mo 0.15%-0.20%, Cu 0.12%-0.25%, W 0.05%-0.10%, Al 0.08%-0.12%, Ti 0.004%-0.016%, Sn 0.004%-0.015%, B 0.005%-0.01%, Y 0.005%-0.008%, S<=0.005%, P<=0.005%, and the balance is iron and inevitable impurities. Through the technical scheme, the problem that the tensile strength of the steel wire body in the galvanized steel wire needs to be improved in the related art is solved.

The present invention relates to the technical field of flue-cured tobacco planting, in particular to a flue-cured tobacco-rice-green manure rotation planting method and a transplanting device thereof, wherein the planting method specifically comprises the following steps: first, sowing and raising seedlings of flue-cured tobacco, after raising seedlings, using a transplanting device to transplant and plant the flue-cured tobacco seedlings on a field where ridges have been formed, and harvesting tobacco leaves after the flue-cured tobacco matures; secondly, planting late rice after tobacco leaf harvesting, sowing astragalus 20-25 days before late rice harvesting; then, turning over and returning the fields after astragalus is in full bloom in mid-April of the following year, and planting the first-season rice. The present invention is beneficial to increasing the organic matter content of the cultivated layer soil by introducing astragalus, realizing the combination of cultivated land use and maintenance and improved fertilization, improving the fertility of tobacco field soil, and achieving four crops and four harvests in two years through the cyclic planting of flue-cured tobacco, late rice, astragalus and regenerated rice.

The invention provides a preparation process of an oleophylic adhesion-resistant film layer of a perfume glass bottle. The preparation process sequentially comprises the steps of ultrasonic cleaning, surface activation, polymer solution spin coating and low-temperature cross-linking curing. The method comprises the following steps: firstly, sequentially adding a water-based decontamination solution, ethanol and deionized water into a glass bottle, and treating in an ultrasonic field of 30-45kHz, so that pollutants on the surface of the inner wall are separated; according to the invention, the low-temperature cross-linked solvent-resistant polymer film layer is formed on the inner wall of the glass, so that the film layer constructs a compact extraction-resistant network structure at 60-90 DEG C, and the permeation rate of ethanol and essential oil to the film layer can be reduced, so that the thickness stability of the film layer is kept for a long time in a closed and high-volatility perfume system; the anti-fingerprint film does not have swelling, softening or demolding phenomena, and is soaked in 85% ethanol and limonene essential oil for 72 hours, the thickness change rate of the film can be controlled below 5%, and the problem that a traditional anti-fingerprint film is easy to lose efficacy in a perfume bottle environment is effectively solved.

The present invention relates to the technical field of automotive carpet materials, and in particular to a recyclable single-component polyester ecological foot pad and a preparation method thereof, wherein the foot pad comprises at least a seven-layer structure, wherein the first layer is PET yarn made of recycled PET material, the second layer is PET non-woven base fabric, the PET yarn of the first layer is fixed on the PET non-woven base fabric of the second layer by a tufting process, the third layer is PET latex, the fourth layer is PET polyester powder, the fifth layer is a PET non-woven fabric intermediate layer, the sixth layer is PET polyester powder, and the seventh layer is a staple needle-punched non-woven fabric or a flamed bottom. The recyclable single-component polyester ecological foot pad of the present invention has only PET as its main component, has a single component, is very convenient for recycling and reuse, reduces the processing pressure of old foot pad waste, and is more environmentally friendly.

The invention relates to the technical field of building materials, and specifically discloses an anti-cracking composite material for concrete repair and a preparation method thereof. The anti-cracking composite material comprises sodium alginate-based modified fiber, deionized water, hydroxymethyl cellulose, sodium dodecylbenzene sulfonate, a water reducer, calcium chloride and calcium oxide. The anti-cracking composite material can be used as a filling material for concrete, is evenly distributed in the concrete, can disperse the directional stress of the concrete, enhance its shrinkage deformation cracking ability, realize the self-repair of concrete cracks, reduce the internal defects of the concrete, thereby improving the microstructure of the concrete, can effectively ensure that the concrete is not easy to crack when subjected to external pressure, blocks the capillary crack channels inside the concrete, reduces the penetration rate of harmful substances such as water, chloride ions and air, and improves its tensile strength and durability. The components in the composite material act synergistically and have excellent concrete crack repairing ability.

The invention provides a high-performance zinc-iodine battery diaphragm as well as a modification process and application thereof. The modification process comprises the following steps: reacting 2, 4, 6-tri (4-aminophenyl) triazine and 4, 4 ', 4' '-(1, 3, 5-triazine-2, 4, 6-triyl) tribenzaldehyde with pyruvic acid in a solvent, quickly freezing at a low temperature, circularly degassing, reacting at a high temperature to obtain a yellow precipitate, and washing and drying the precipitate to obtain the covalent organic framework material. And applying the covalent organic framework material and graphene to the glass fiber diaphragm through a suction filtration method to obtain the zinc-iodine battery diaphragm. The zinc-iodine battery diaphragm prepared by the invention has excellent hydrophilicity and proper aperture, and can promote rapid transmission of Zn < 2 + >; and a small pore channel can effectively hinder shuttling of the polyiodide. Besides, carboxylic acid groups rich in the diaphragm can form a chemically stable interface on the surface of the diaphragm, the ion permeation speed is reduced, the conductivity of the diaphragm is improved, and an unexpected reaction between iodide ions and zinc ions is effectively prevented, so that the cycle life of the battery is prolonged, and the safety of the battery is improved.

The invention provides xanthoxylin composite mask cloth and a preparation method thereof, and belongs to the field of textile materials. The method comprises the following steps: S1, carrying out carboxymethylation modification on pure cotton fibers to obtain hydrophilic fibers; s2, pure cotton fibers, hydrophobic modified silicon dioxide and a strong alkali solution are mixed and subjected to microwave-ultrasonic combined treatment, and hydrophobic fibers are obtained; s3, hydrophilic non-woven fabric is prepared from the hydrophilic fibers, and hydrophobic non-woven fabric is prepared from the hydrophobic fibers; s4, the hydrophilic non-woven fabric and the hydrophobic non-woven fabric are stacked and then subjected to hot-pressing compounding, and a mask base material is obtained; and S5, coating the surface of the mask base material with the xanthoxylin liquid, and then drying to obtain the xanthoxylin composite mask cloth. The hydrophilic layer can efficiently absorb xanthoxylin liquid, and the hydrophobic layer slows down the permeation speed of the xanthoxylin liquid, so that the xanthoxylin has more time to be uniformly distributed in the hydrophilic layer, and the contact area and the contact time of the xanthoxylin liquid and the skin are improved. Therefore, the absorption effect of the xanthoxylin in the xanthoxylin composite mask cloth is improved.

The present application relates to the field of shield construction materials, and in particular to a shield construction grouting slurry and a preparation method thereof. The shield construction grouting slurry, by mass, includes raw materials such as 20-35 parts of gel material, 70-85 parts of river sand, 20-30 parts of fly ash, 15-20 parts of limestone powder, 5-20 parts of sodium bentonite, 10-25 parts of filler, 4-10 parts of modified additives, 4-6 parts of curing agent, 8-10 parts of accelerator, 0.1-2 parts of water reducer, and 80-110 parts of water. The grouting slurry prepared in the present application has excellent permeability and fluidity, and after being cured, it can obtain good crack resistance, waterproofness, stability and temperature resistance on the basis of ensuring excellent compressive strength, which can solve the problems of insufficient crack resistance, waterproofness and other properties faced by the existing shield grouting slurry, and has good environmental adaptability and excellent application value.

This invention relates to the field of corrosion-resistant special cables, specifically to a solvent-resistant and corrosion-resistant cable and its manufacturing method, comprising a conductor unit, an insulation protection unit, a shielding unit, a barrier protection unit, and an outer sheath unit arranged sequentially. The conductor unit is made of oxygen-free copper wire stranded together, with gaps filled with fluoroether-based corrosion-resistant sealant and cured at high temperature. The insulation protection unit is a three-layer co-extruded structure of modified cross-linked polyethylene with added nano-montmorillonite. The shielding unit is a double-layer reverse braided tin-plated copper wire with a polyurethane corrosion-resistant passivation coating on the surface. The barrier protection unit is a double-layer overlapping wrapping of aluminum-plastic composite tape and water-blocking and corrosion-resistant composite tape. This invention significantly improves the service stability and service life of the cable in complex corrosive environments, eliminates the need for additional corrosion-resistant outer sheath structures, reduces engineering application costs, and is suitable for power transmission needs in various scenarios such as chemical, marine, and new energy industries, possessing high application value.

The invention relates to the technical field of films, and discloses an antibacterial PE film and a preparation method thereof. The PE film prepared by the invention comprises the following raw materials in parts by weight: 35-45 parts of low-density polyethylene, 15-25 parts of high-density polyethylene, 10-20 parts of metallocene linear low-density polyethylene, 5-10 parts of maleic anhydride grafted POE, 5-10 parts of a composite antibacterial agent, 2-5 parts of a lubricant and 1-3 parts of an antioxidant. The PE film not only has the barrier property of the traditional PE film, but also is endowed with excellent antibacterial property by adding the composite antibacterial agent.

The utility model provides a kind of corundum-silicon carbide honeycomb brick of slag erosion resistance, including brick body, the brick body includes corundum-silicon carbide matrix, transition layer and working layer and is sequentially layered and spread compaction molding, the working layer is equipped with several holes, the hole is hexagonal trapezoidal and is arranged in honeycomb shape, the hole orifice big one end is located at working layer top end, and the hole orifice small one end is located at working layer bottom end.The utility model melts slag and seeps into from the hole orifice big one end, with its downward penetration, the cross-sectional area of passageway gradually reduces, effectively slows down the penetration rate of molten slag, quickly forms a natural blocking layer, prevents the further penetration of subsequent molten slag.

This application belongs to the field of packaging film technology, specifically providing a modified PE film and its preparation method. A modified PE film comprises the following components: a PE film, a modified polyvinyl alcohol coating solution, and zinc stearate; the modified polyvinyl alcohol coating solution is prepared by mixing polyvinyl alcohol, tannic acid, and nano-hydroxyapatite. The modified PE film obtained by this application has good mechanical properties and barrier properties.

The invention relates to the technical field of rubber, and relates to a corrosion-resistant rubber composite material and a preparation method thereof. The corrosion-resistant rubber composite material comprises the following components in parts by weight: 100 parts of matrix rubber; 50-65 parts of regenerated microspheres with a core-shell structure; 20 to 30 parts of layered hydrotalcite; 1 to 3 parts of dicumyl peroxide; 0.5 to 2.5 parts of auxiliary cross-linking agent TAIC (triallyl isocyanurate); 3-8 parts of epoxidized soybean oil; 0.5 to 2 parts of stearic acid; and 1-2 parts of an anti-aging agent 445. According to the corrosion-resistant rubber composite material provided by the invention, the mechanical property of the composite material is improved, the corrosion resistance of the composite material is improved, and the problems that a traditional material is insufficient in tensile strength and elongation at break and is easy to damage in a severe corrosion environment are solved; and the utilization value of the waste tires is increased, the solid waste treatment mode is improved, secondary pollution is avoided, and low-cost green cyclic utilization is achieved.

This invention provides a PDA / ODT-ODTMS composite coating and its preparation method, relating to the field of metal surface protection technology. The coating comprises, from the inside out, a polydopamine intermediate layer and a co-deposited functional layer of n-octadecyl mercaptan / octadecyltrimethoxysilane. The preparation method involves first electrodepositing a PDA intermediate layer on the substrate surface, then immersing it in an aqueous micelle deposition solution composed of n-octadecyl mercaptan, octadecyltrimethoxysilane, and a surfactant, and forming the composite functional layer through isothermal chemical deposition. This invention, through molecular-level co-deposition of ODT and ODTMS combined with an aqueous micelle process, constructs a firmly adhered, dense, and highly hydrophobic protective barrier on the metal surface, significantly improving the long-term corrosion resistance and stability of the coating, while also making the preparation process safer and more environmentally friendly.